author | Jerry Jelinek <jerry.jelinek@joyent.com> |
Mon, 11 Jun 2012 18:23:37 +0000 | |
changeset 14222 | c3f8a4690b1f |
parent 12923 | 3c964548d01f |
child 14223 | 1652c59077c6 |
permissions | -rw-r--r-- |
2621 | 1 |
/* |
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* CDDL HEADER START |
|
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* |
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* The contents of this file are subject to the terms of the |
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* Common Development and Distribution License (the "License"). |
|
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* You may not use this file except in compliance with the License. |
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* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
|
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* See the License for the specific language governing permissions |
|
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* and limitations under the License. |
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* |
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* When distributing Covered Code, include this CDDL HEADER in each |
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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/* |
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12633
9f2cda0ed938
PSARC 2010/144 lofi(7D) in non global zones
John Levon <john.levon@sun.com>
parents:
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diff
changeset
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* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. |
14222
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3977 zones can commit suicide by zvol
Jerry Jelinek <jerry.jelinek@joyent.com>
parents:
12923
diff
changeset
|
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* Copyright (c) 2012, Joyent, Inc. All rights reserved. |
2621 | 24 |
*/ |
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||
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/* |
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* utility routines for the /dev fs |
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*/ |
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||
30 |
#include <sys/types.h> |
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#include <sys/param.h> |
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32 |
#include <sys/t_lock.h> |
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#include <sys/systm.h> |
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#include <sys/sysmacros.h> |
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#include <sys/user.h> |
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#include <sys/time.h> |
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#include <sys/vfs.h> |
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38 |
#include <sys/vnode.h> |
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39 |
#include <sys/file.h> |
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40 |
#include <sys/fcntl.h> |
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#include <sys/flock.h> |
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42 |
#include <sys/kmem.h> |
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#include <sys/uio.h> |
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#include <sys/errno.h> |
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#include <sys/stat.h> |
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#include <sys/cred.h> |
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#include <sys/dirent.h> |
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48 |
#include <sys/pathname.h> |
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49 |
#include <sys/cmn_err.h> |
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50 |
#include <sys/debug.h> |
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#include <sys/mode.h> |
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52 |
#include <sys/policy.h> |
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53 |
#include <fs/fs_subr.h> |
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#include <sys/mount.h> |
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55 |
#include <sys/fs/snode.h> |
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56 |
#include <sys/fs/dv_node.h> |
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57 |
#include <sys/fs/sdev_impl.h> |
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58 |
#include <sys/sunndi.h> |
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59 |
#include <sys/sunmdi.h> |
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60 |
#include <sys/conf.h> |
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61 |
#include <sys/proc.h> |
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#include <sys/user.h> |
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#include <sys/modctl.h> |
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64 |
||
65 |
#ifdef DEBUG |
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66 |
int sdev_debug = 0x00000001; |
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67 |
int sdev_debug_cache_flags = 0; |
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68 |
#endif |
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69 |
||
70 |
/* |
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* globals |
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*/ |
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73 |
/* prototype memory vattrs */ |
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vattr_t sdev_vattr_dir = { |
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AT_TYPE|AT_MODE|AT_UID|AT_GID, /* va_mask */ |
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VDIR, /* va_type */ |
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77 |
SDEV_DIRMODE_DEFAULT, /* va_mode */ |
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SDEV_UID_DEFAULT, /* va_uid */ |
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SDEV_GID_DEFAULT, /* va_gid */ |
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0, /* va_fsid */ |
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0, /* va_nodeid */ |
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0, /* va_nlink */ |
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0, /* va_size */ |
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0, /* va_atime */ |
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0, /* va_mtime */ |
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0, /* va_ctime */ |
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0, /* va_rdev */ |
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0, /* va_blksize */ |
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0, /* va_nblocks */ |
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0 /* va_vcode */ |
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}; |
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||
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vattr_t sdev_vattr_lnk = { |
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AT_TYPE|AT_MODE, /* va_mask */ |
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VLNK, /* va_type */ |
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SDEV_LNKMODE_DEFAULT, /* va_mode */ |
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SDEV_UID_DEFAULT, /* va_uid */ |
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SDEV_GID_DEFAULT, /* va_gid */ |
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0, /* va_fsid */ |
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0, /* va_nodeid */ |
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0, /* va_nlink */ |
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0, /* va_size */ |
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0, /* va_atime */ |
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0, /* va_mtime */ |
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0, /* va_ctime */ |
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0, /* va_rdev */ |
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0, /* va_blksize */ |
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0, /* va_nblocks */ |
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0 /* va_vcode */ |
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}; |
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||
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vattr_t sdev_vattr_blk = { |
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AT_TYPE|AT_MODE|AT_UID|AT_GID, /* va_mask */ |
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114 |
VBLK, /* va_type */ |
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S_IFBLK | SDEV_DEVMODE_DEFAULT, /* va_mode */ |
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116 |
SDEV_UID_DEFAULT, /* va_uid */ |
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117 |
SDEV_GID_DEFAULT, /* va_gid */ |
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118 |
0, /* va_fsid */ |
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0, /* va_nodeid */ |
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120 |
0, /* va_nlink */ |
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121 |
0, /* va_size */ |
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0, /* va_atime */ |
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123 |
0, /* va_mtime */ |
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0, /* va_ctime */ |
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125 |
0, /* va_rdev */ |
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126 |
0, /* va_blksize */ |
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127 |
0, /* va_nblocks */ |
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128 |
0 /* va_vcode */ |
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129 |
}; |
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130 |
||
131 |
vattr_t sdev_vattr_chr = { |
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AT_TYPE|AT_MODE|AT_UID|AT_GID, /* va_mask */ |
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VCHR, /* va_type */ |
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S_IFCHR | SDEV_DEVMODE_DEFAULT, /* va_mode */ |
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135 |
SDEV_UID_DEFAULT, /* va_uid */ |
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136 |
SDEV_GID_DEFAULT, /* va_gid */ |
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137 |
0, /* va_fsid */ |
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138 |
0, /* va_nodeid */ |
|
139 |
0, /* va_nlink */ |
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140 |
0, /* va_size */ |
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0, /* va_atime */ |
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142 |
0, /* va_mtime */ |
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0, /* va_ctime */ |
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0, /* va_rdev */ |
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145 |
0, /* va_blksize */ |
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0, /* va_nblocks */ |
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0 /* va_vcode */ |
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148 |
}; |
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149 |
||
150 |
kmem_cache_t *sdev_node_cache; /* sdev_node cache */ |
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151 |
int devtype; /* fstype */ |
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152 |
||
153 |
/* static */ |
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154 |
static struct vnodeops *sdev_get_vop(struct sdev_node *); |
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10588
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6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
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155 |
static void sdev_set_no_negcache(struct sdev_node *); |
2621 | 156 |
static fs_operation_def_t *sdev_merge_vtab(const fs_operation_def_t []); |
157 |
static void sdev_free_vtab(fs_operation_def_t *); |
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158 |
||
159 |
static void |
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160 |
sdev_prof_free(struct sdev_node *dv) |
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161 |
{ |
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ASSERT(!SDEV_IS_GLOBAL(dv)); |
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163 |
if (dv->sdev_prof.dev_name) |
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164 |
nvlist_free(dv->sdev_prof.dev_name); |
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165 |
if (dv->sdev_prof.dev_map) |
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166 |
nvlist_free(dv->sdev_prof.dev_map); |
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167 |
if (dv->sdev_prof.dev_symlink) |
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168 |
nvlist_free(dv->sdev_prof.dev_symlink); |
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if (dv->sdev_prof.dev_glob_incdir) |
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170 |
nvlist_free(dv->sdev_prof.dev_glob_incdir); |
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171 |
if (dv->sdev_prof.dev_glob_excdir) |
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172 |
nvlist_free(dv->sdev_prof.dev_glob_excdir); |
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173 |
bzero(&dv->sdev_prof, sizeof (dv->sdev_prof)); |
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174 |
} |
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175 |
||
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176 |
/* sdev_node cache constructor */ |
2621 | 177 |
/*ARGSUSED1*/ |
178 |
static int |
|
179 |
i_sdev_node_ctor(void *buf, void *cfarg, int flag) |
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180 |
{ |
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181 |
struct sdev_node *dv = (struct sdev_node *)buf; |
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182 |
struct vnode *vp; |
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183 |
||
184 |
bzero(buf, sizeof (struct sdev_node)); |
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185 |
vp = dv->sdev_vnode = vn_alloc(flag); |
79afecec3f3c
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|
186 |
if (vp == NULL) { |
79afecec3f3c
6554564 slab allocator cannot release slabs with lonely buffers
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187 |
return (-1); |
79afecec3f3c
6554564 slab allocator cannot release slabs with lonely buffers
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|
188 |
} |
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|
189 |
vp->v_data = dv; |
2621 | 190 |
rw_init(&dv->sdev_contents, NULL, RW_DEFAULT, NULL); |
191 |
return (0); |
|
192 |
} |
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193 |
||
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|
194 |
/* sdev_node cache destructor */ |
2621 | 195 |
/*ARGSUSED1*/ |
196 |
static void |
|
197 |
i_sdev_node_dtor(void *buf, void *arg) |
|
198 |
{ |
|
199 |
struct sdev_node *dv = (struct sdev_node *)buf; |
|
200 |
struct vnode *vp = SDEVTOV(dv); |
|
201 |
||
202 |
rw_destroy(&dv->sdev_contents); |
|
203 |
vn_free(vp); |
|
204 |
} |
|
205 |
||
206 |
/* initialize sdev_node cache */ |
|
207 |
void |
|
208 |
sdev_node_cache_init() |
|
209 |
{ |
|
210 |
int flags = 0; |
|
211 |
||
212 |
#ifdef DEBUG |
|
213 |
flags = sdev_debug_cache_flags; |
|
214 |
if (flags) |
|
215 |
sdcmn_err(("cache debug flags 0x%x\n", flags)); |
|
216 |
#endif /* DEBUG */ |
|
217 |
||
218 |
ASSERT(sdev_node_cache == NULL); |
|
219 |
sdev_node_cache = kmem_cache_create("sdev_node_cache", |
|
220 |
sizeof (struct sdev_node), 0, i_sdev_node_ctor, i_sdev_node_dtor, |
|
221 |
NULL, NULL, NULL, flags); |
|
222 |
} |
|
223 |
||
224 |
/* destroy sdev_node cache */ |
|
225 |
void |
|
226 |
sdev_node_cache_fini() |
|
227 |
{ |
|
228 |
ASSERT(sdev_node_cache != NULL); |
|
229 |
kmem_cache_destroy(sdev_node_cache); |
|
230 |
sdev_node_cache = NULL; |
|
231 |
} |
|
232 |
||
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
233 |
/* |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
234 |
* Compare two nodes lexographically to balance avl tree |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
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|
235 |
*/ |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
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|
236 |
static int |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
237 |
sdev_compare_nodes(const struct sdev_node *dv1, const struct sdev_node *dv2) |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
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|
238 |
{ |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
239 |
int rv; |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
240 |
if ((rv = strcmp(dv1->sdev_name, dv2->sdev_name)) == 0) |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
241 |
return (0); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
242 |
return ((rv < 0) ? -1 : 1); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
243 |
} |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
244 |
|
2621 | 245 |
void |
246 |
sdev_set_nodestate(struct sdev_node *dv, sdev_node_state_t state) |
|
247 |
{ |
|
248 |
ASSERT(dv); |
|
249 |
ASSERT(RW_WRITE_HELD(&dv->sdev_contents)); |
|
250 |
dv->sdev_state = state; |
|
251 |
} |
|
252 |
||
253 |
static void |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
254 |
sdev_attr_update(struct sdev_node *dv, vattr_t *vap) |
2621 | 255 |
{ |
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
256 |
timestruc_t now; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
257 |
struct vattr *attrp; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
258 |
uint_t mask; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
259 |
|
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
260 |
ASSERT(dv->sdev_attr); |
2621 | 261 |
ASSERT(vap); |
262 |
||
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
263 |
attrp = dv->sdev_attr; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
264 |
mask = vap->va_mask; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
265 |
if (mask & AT_TYPE) |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
266 |
attrp->va_type = vap->va_type; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
267 |
if (mask & AT_MODE) |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
268 |
attrp->va_mode = vap->va_mode; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
269 |
if (mask & AT_UID) |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
270 |
attrp->va_uid = vap->va_uid; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
271 |
if (mask & AT_GID) |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
272 |
attrp->va_gid = vap->va_gid; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
273 |
if (mask & AT_RDEV) |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
274 |
attrp->va_rdev = vap->va_rdev; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
275 |
|
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
276 |
gethrestime(&now); |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
277 |
attrp->va_atime = (mask & AT_ATIME) ? vap->va_atime : now; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
278 |
attrp->va_mtime = (mask & AT_MTIME) ? vap->va_mtime : now; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
279 |
attrp->va_ctime = (mask & AT_CTIME) ? vap->va_ctime : now; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
280 |
} |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
281 |
|
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|
282 |
static void |
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|
283 |
sdev_attr_alloc(struct sdev_node *dv, vattr_t *vap) |
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|
284 |
{ |
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|
285 |
ASSERT(dv->sdev_attr == NULL); |
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|
286 |
ASSERT(vap->va_mask & AT_TYPE); |
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6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
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|
287 |
ASSERT(vap->va_mask & AT_MODE); |
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6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
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|
288 |
|
2621 | 289 |
dv->sdev_attr = kmem_zalloc(sizeof (struct vattr), KM_SLEEP); |
11279
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6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
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|
290 |
sdev_attr_update(dv, vap); |
2621 | 291 |
} |
292 |
||
293 |
/* alloc and initialize a sdev_node */ |
|
294 |
int |
|
295 |
sdev_nodeinit(struct sdev_node *ddv, char *nm, struct sdev_node **newdv, |
|
296 |
vattr_t *vap) |
|
297 |
{ |
|
298 |
struct sdev_node *dv = NULL; |
|
299 |
struct vnode *vp; |
|
300 |
size_t nmlen, len; |
|
301 |
devname_handle_t *dhl; |
|
302 |
||
303 |
nmlen = strlen(nm) + 1; |
|
304 |
if (nmlen > MAXNAMELEN) { |
|
305 |
sdcmn_err9(("sdev_nodeinit: node name %s" |
|
306 |
" too long\n", nm)); |
|
307 |
*newdv = NULL; |
|
308 |
return (ENAMETOOLONG); |
|
309 |
} |
|
310 |
||
311 |
dv = kmem_cache_alloc(sdev_node_cache, KM_SLEEP); |
|
312 |
||
313 |
dv->sdev_name = kmem_alloc(nmlen, KM_SLEEP); |
|
314 |
bcopy(nm, dv->sdev_name, nmlen); |
|
315 |
dv->sdev_namelen = nmlen - 1; /* '\0' not included */ |
|
316 |
len = strlen(ddv->sdev_path) + strlen(nm) + 2; |
|
317 |
dv->sdev_path = kmem_alloc(len, KM_SLEEP); |
|
318 |
(void) snprintf(dv->sdev_path, len, "%s/%s", ddv->sdev_path, nm); |
|
319 |
/* overwritten for VLNK nodes */ |
|
320 |
dv->sdev_symlink = NULL; |
|
321 |
||
322 |
vp = SDEVTOV(dv); |
|
323 |
vn_reinit(vp); |
|
324 |
vp->v_vfsp = SDEVTOV(ddv)->v_vfsp; |
|
325 |
if (vap) |
|
326 |
vp->v_type = vap->va_type; |
|
327 |
||
328 |
/* |
|
329 |
* initialized to the parent's vnodeops. |
|
330 |
* maybe overwriten for a VDIR |
|
331 |
*/ |
|
332 |
vn_setops(vp, vn_getops(SDEVTOV(ddv))); |
|
333 |
vn_exists(vp); |
|
334 |
||
335 |
dv->sdev_dotdot = NULL; |
|
336 |
dv->sdev_attrvp = NULL; |
|
337 |
if (vap) { |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
338 |
sdev_attr_alloc(dv, vap); |
2621 | 339 |
} else { |
340 |
dv->sdev_attr = NULL; |
|
341 |
} |
|
342 |
||
343 |
dv->sdev_ino = sdev_mkino(dv); |
|
344 |
dv->sdev_nlink = 0; /* updated on insert */ |
|
345 |
dv->sdev_flags = ddv->sdev_flags; /* inherit from the parent first */ |
|
346 |
dv->sdev_flags |= SDEV_BUILD; |
|
347 |
mutex_init(&dv->sdev_lookup_lock, NULL, MUTEX_DEFAULT, NULL); |
|
348 |
cv_init(&dv->sdev_lookup_cv, NULL, CV_DEFAULT, NULL); |
|
349 |
if (SDEV_IS_GLOBAL(ddv)) { |
|
350 |
dv->sdev_flags |= SDEV_GLOBAL; |
|
351 |
dhl = &(dv->sdev_handle); |
|
352 |
dhl->dh_data = dv; |
|
353 |
dhl->dh_args = NULL; |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
354 |
sdev_set_no_negcache(dv); |
2621 | 355 |
dv->sdev_gdir_gen = 0; |
356 |
} else { |
|
357 |
dv->sdev_flags &= ~SDEV_GLOBAL; |
|
358 |
dv->sdev_origin = NULL; /* set later */ |
|
359 |
bzero(&dv->sdev_prof, sizeof (dv->sdev_prof)); |
|
360 |
dv->sdev_ldir_gen = 0; |
|
361 |
dv->sdev_devtree_gen = 0; |
|
362 |
} |
|
363 |
||
364 |
rw_enter(&dv->sdev_contents, RW_WRITER); |
|
365 |
sdev_set_nodestate(dv, SDEV_INIT); |
|
366 |
rw_exit(&dv->sdev_contents); |
|
367 |
*newdv = dv; |
|
368 |
||
369 |
return (0); |
|
370 |
} |
|
371 |
||
372 |
/* |
|
373 |
* transition a sdev_node into SDEV_READY state |
|
374 |
*/ |
|
375 |
int |
|
376 |
sdev_nodeready(struct sdev_node *dv, struct vattr *vap, struct vnode *avp, |
|
377 |
void *args, struct cred *cred) |
|
378 |
{ |
|
379 |
int error = 0; |
|
380 |
struct vnode *vp = SDEVTOV(dv); |
|
381 |
vtype_t type; |
|
382 |
||
383 |
ASSERT(dv && (dv->sdev_state != SDEV_READY) && vap); |
|
384 |
||
385 |
type = vap->va_type; |
|
386 |
vp->v_type = type; |
|
387 |
vp->v_rdev = vap->va_rdev; |
|
388 |
rw_enter(&dv->sdev_contents, RW_WRITER); |
|
389 |
if (type == VDIR) { |
|
390 |
dv->sdev_nlink = 2; |
|
391 |
dv->sdev_flags &= ~SDEV_PERSIST; |
|
392 |
dv->sdev_flags &= ~SDEV_DYNAMIC; |
|
393 |
vn_setops(vp, sdev_get_vop(dv)); /* from internal vtab */ |
|
394 |
ASSERT(dv->sdev_dotdot); |
|
395 |
ASSERT(SDEVTOV(dv->sdev_dotdot)->v_type == VDIR); |
|
396 |
vp->v_rdev = SDEVTOV(dv->sdev_dotdot)->v_rdev; |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
397 |
avl_create(&dv->sdev_entries, |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
398 |
(int (*)(const void *, const void *))sdev_compare_nodes, |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
399 |
sizeof (struct sdev_node), |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
400 |
offsetof(struct sdev_node, sdev_avllink)); |
2621 | 401 |
} else if (type == VLNK) { |
402 |
ASSERT(args); |
|
403 |
dv->sdev_nlink = 1; |
|
404 |
dv->sdev_symlink = i_ddi_strdup((char *)args, KM_SLEEP); |
|
405 |
} else { |
|
406 |
dv->sdev_nlink = 1; |
|
407 |
} |
|
408 |
||
409 |
if (!(SDEV_IS_GLOBAL(dv))) { |
|
410 |
dv->sdev_origin = (struct sdev_node *)args; |
|
411 |
dv->sdev_flags &= ~SDEV_PERSIST; |
|
412 |
} |
|
413 |
||
414 |
/* |
|
415 |
* shadow node is created here OR |
|
416 |
* if failed (indicated by dv->sdev_attrvp == NULL), |
|
417 |
* created later in sdev_setattr |
|
418 |
*/ |
|
419 |
if (avp) { |
|
420 |
dv->sdev_attrvp = avp; |
|
421 |
} else { |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
422 |
if (dv->sdev_attr == NULL) { |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
423 |
sdev_attr_alloc(dv, vap); |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
424 |
} else { |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
425 |
sdev_attr_update(dv, vap); |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
426 |
} |
2621 | 427 |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
428 |
if ((dv->sdev_attrvp == NULL) && SDEV_IS_PERSIST(dv)) |
2621 | 429 |
error = sdev_shadow_node(dv, cred); |
430 |
} |
|
431 |
||
6335
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
432 |
if (error == 0) { |
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
433 |
/* transition to READY state */ |
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
434 |
sdev_set_nodestate(dv, SDEV_READY); |
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
435 |
sdev_nc_node_exists(dv); |
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
436 |
} else { |
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
437 |
sdev_set_nodestate(dv, SDEV_ZOMBIE); |
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
438 |
} |
2621 | 439 |
rw_exit(&dv->sdev_contents); |
440 |
return (error); |
|
441 |
} |
|
442 |
||
443 |
/* |
|
444 |
* setting ZOMBIE state |
|
445 |
*/ |
|
446 |
static int |
|
447 |
sdev_nodezombied(struct sdev_node *dv) |
|
448 |
{ |
|
449 |
rw_enter(&dv->sdev_contents, RW_WRITER); |
|
450 |
sdev_set_nodestate(dv, SDEV_ZOMBIE); |
|
451 |
rw_exit(&dv->sdev_contents); |
|
452 |
return (0); |
|
453 |
} |
|
454 |
||
455 |
/* |
|
456 |
* Build the VROOT sdev_node. |
|
457 |
*/ |
|
458 |
/*ARGSUSED*/ |
|
459 |
struct sdev_node * |
|
460 |
sdev_mkroot(struct vfs *vfsp, dev_t devdev, struct vnode *mvp, |
|
461 |
struct vnode *avp, struct cred *cred) |
|
462 |
{ |
|
463 |
struct sdev_node *dv; |
|
464 |
struct vnode *vp; |
|
465 |
char devdir[] = "/dev"; |
|
466 |
||
467 |
ASSERT(sdev_node_cache != NULL); |
|
468 |
ASSERT(avp); |
|
469 |
dv = kmem_cache_alloc(sdev_node_cache, KM_SLEEP); |
|
470 |
vp = SDEVTOV(dv); |
|
471 |
vn_reinit(vp); |
|
472 |
vp->v_flag |= VROOT; |
|
473 |
vp->v_vfsp = vfsp; |
|
474 |
vp->v_type = VDIR; |
|
475 |
vp->v_rdev = devdev; |
|
476 |
vn_setops(vp, sdev_vnodeops); /* apply the default vnodeops at /dev */ |
|
477 |
vn_exists(vp); |
|
478 |
||
479 |
if (vfsp->vfs_mntpt) |
|
480 |
dv->sdev_name = i_ddi_strdup( |
|
481 |
(char *)refstr_value(vfsp->vfs_mntpt), KM_SLEEP); |
|
482 |
else |
|
483 |
/* vfs_mountdev1 set mount point later */ |
|
484 |
dv->sdev_name = i_ddi_strdup("/dev", KM_SLEEP); |
|
485 |
dv->sdev_namelen = strlen(dv->sdev_name); /* '\0' not included */ |
|
486 |
dv->sdev_path = i_ddi_strdup(devdir, KM_SLEEP); |
|
487 |
dv->sdev_ino = SDEV_ROOTINO; |
|
488 |
dv->sdev_nlink = 2; /* name + . (no sdev_insert) */ |
|
489 |
dv->sdev_dotdot = dv; /* .. == self */ |
|
490 |
dv->sdev_attrvp = avp; |
|
491 |
dv->sdev_attr = NULL; |
|
492 |
mutex_init(&dv->sdev_lookup_lock, NULL, MUTEX_DEFAULT, NULL); |
|
493 |
cv_init(&dv->sdev_lookup_cv, NULL, CV_DEFAULT, NULL); |
|
494 |
if (strcmp(dv->sdev_name, "/dev") == 0) { |
|
495 |
dv->sdev_flags = SDEV_BUILD|SDEV_GLOBAL|SDEV_PERSIST; |
|
496 |
bzero(&dv->sdev_handle, sizeof (dv->sdev_handle)); |
|
497 |
dv->sdev_gdir_gen = 0; |
|
498 |
} else { |
|
499 |
dv->sdev_flags = SDEV_BUILD; |
|
500 |
dv->sdev_flags &= ~SDEV_PERSIST; |
|
501 |
bzero(&dv->sdev_prof, sizeof (dv->sdev_prof)); |
|
502 |
dv->sdev_ldir_gen = 0; |
|
503 |
dv->sdev_devtree_gen = 0; |
|
504 |
} |
|
505 |
||
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
506 |
avl_create(&dv->sdev_entries, |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
507 |
(int (*)(const void *, const void *))sdev_compare_nodes, |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
508 |
sizeof (struct sdev_node), |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
509 |
offsetof(struct sdev_node, sdev_avllink)); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
510 |
|
2621 | 511 |
rw_enter(&dv->sdev_contents, RW_WRITER); |
512 |
sdev_set_nodestate(dv, SDEV_READY); |
|
513 |
rw_exit(&dv->sdev_contents); |
|
514 |
sdev_nc_node_exists(dv); |
|
515 |
return (dv); |
|
516 |
} |
|
517 |
||
518 |
/* directory dependent vop table */ |
|
519 |
struct sdev_vop_table { |
|
520 |
char *vt_name; /* subdirectory name */ |
|
521 |
const fs_operation_def_t *vt_service; /* vnodeops table */ |
|
522 |
struct vnodeops *vt_vops; /* constructed vop */ |
|
523 |
struct vnodeops **vt_global_vops; /* global container for vop */ |
|
524 |
int (*vt_vtor)(struct sdev_node *); /* validate sdev_node */ |
|
525 |
int vt_flags; |
|
526 |
}; |
|
527 |
||
528 |
/* |
|
529 |
* A nice improvement would be to provide a plug-in mechanism |
|
530 |
* for this table instead of a const table. |
|
531 |
*/ |
|
532 |
static struct sdev_vop_table vtab[] = |
|
533 |
{ |
|
534 |
{ "pts", devpts_vnodeops_tbl, NULL, &devpts_vnodeops, devpts_validate, |
|
535 |
SDEV_DYNAMIC | SDEV_VTOR }, |
|
536 |
||
7688
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
537 |
{ "vt", devvt_vnodeops_tbl, NULL, &devvt_vnodeops, devvt_validate, |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
538 |
SDEV_DYNAMIC | SDEV_VTOR }, |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
539 |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
540 |
{ "zvol", devzvol_vnodeops_tbl, NULL, &devzvol_vnodeops, |
14222
c3f8a4690b1f
3977 zones can commit suicide by zvol
Jerry Jelinek <jerry.jelinek@joyent.com>
parents:
12923
diff
changeset
|
541 |
devzvol_validate, SDEV_ZONED | SDEV_DYNAMIC | SDEV_VTOR | SDEV_SUBDIR }, |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
542 |
|
2621 | 543 |
{ "zcons", NULL, NULL, NULL, NULL, SDEV_NO_NCACHE }, |
544 |
||
5895
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
545 |
{ "net", devnet_vnodeops_tbl, NULL, &devnet_vnodeops, devnet_validate, |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
546 |
SDEV_DYNAMIC | SDEV_VTOR }, |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
547 |
|
8023
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
548 |
{ "ipnet", devipnet_vnodeops_tbl, NULL, &devipnet_vnodeops, |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
549 |
devipnet_validate, SDEV_DYNAMIC | SDEV_VTOR | SDEV_NO_NCACHE }, |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
550 |
|
12923
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
551 |
/* |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
552 |
* SDEV_DYNAMIC: prevent calling out to devfsadm, since only the |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
553 |
* lofi driver controls child nodes. |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
554 |
* |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
555 |
* SDEV_PERSIST: ensure devfsadm knows to clean up any persisted |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
556 |
* stale nodes (e.g. from devfsadm -R). |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
557 |
* |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
558 |
* In addition, devfsadm knows not to attempt a rmdir: a zone |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
559 |
* may hold a reference, which would zombify the node, |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
560 |
* preventing a mkdir. |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
561 |
*/ |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
562 |
|
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
563 |
{ "lofi", NULL, NULL, NULL, NULL, |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
564 |
SDEV_ZONED | SDEV_DYNAMIC | SDEV_PERSIST }, |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
565 |
{ "rlofi", NULL, NULL, NULL, NULL, |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
566 |
SDEV_ZONED | SDEV_DYNAMIC | SDEV_PERSIST }, |
12633
9f2cda0ed938
PSARC 2010/144 lofi(7D) in non global zones
John Levon <john.levon@sun.com>
parents:
11279
diff
changeset
|
567 |
|
2621 | 568 |
{ NULL, NULL, NULL, NULL, NULL, 0} |
569 |
}; |
|
570 |
||
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
571 |
struct sdev_vop_table * |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
572 |
sdev_match(struct sdev_node *dv) |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
573 |
{ |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
574 |
int vlen; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
575 |
int i; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
576 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
577 |
for (i = 0; vtab[i].vt_name; i++) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
578 |
if (strcmp(vtab[i].vt_name, dv->sdev_name) == 0) |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
579 |
return (&vtab[i]); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
580 |
if (vtab[i].vt_flags & SDEV_SUBDIR) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
581 |
char *ptr; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
582 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
583 |
ASSERT(strlen(dv->sdev_path) > 5); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
584 |
ptr = dv->sdev_path + 5; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
585 |
vlen = strlen(vtab[i].vt_name); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
586 |
if ((strncmp(vtab[i].vt_name, ptr, |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
587 |
vlen - 1) == 0) && ptr[vlen] == '/') |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
588 |
return (&vtab[i]); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
589 |
} |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
590 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
591 |
} |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
592 |
return (NULL); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
593 |
} |
2621 | 594 |
|
595 |
/* |
|
596 |
* sets a directory's vnodeops if the directory is in the vtab; |
|
597 |
*/ |
|
598 |
static struct vnodeops * |
|
599 |
sdev_get_vop(struct sdev_node *dv) |
|
600 |
{ |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
601 |
struct sdev_vop_table *vtp; |
2621 | 602 |
char *path; |
603 |
||
604 |
path = dv->sdev_path; |
|
605 |
ASSERT(path); |
|
606 |
||
607 |
/* gets the relative path to /dev/ */ |
|
608 |
path += 5; |
|
609 |
||
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
610 |
/* gets the vtab entry it matches */ |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
611 |
if ((vtp = sdev_match(dv)) != NULL) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
612 |
dv->sdev_flags |= vtp->vt_flags; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
613 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
614 |
if (vtp->vt_vops) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
615 |
if (vtp->vt_global_vops) |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
616 |
*(vtp->vt_global_vops) = vtp->vt_vops; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
617 |
return (vtp->vt_vops); |
2621 | 618 |
} |
619 |
||
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
620 |
if (vtp->vt_service) { |
2621 | 621 |
fs_operation_def_t *templ; |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
622 |
templ = sdev_merge_vtab(vtp->vt_service); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
623 |
if (vn_make_ops(vtp->vt_name, |
2621 | 624 |
(const fs_operation_def_t *)templ, |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
625 |
&vtp->vt_vops) != 0) { |
2621 | 626 |
cmn_err(CE_PANIC, "%s: malformed vnode ops\n", |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
627 |
vtp->vt_name); |
2621 | 628 |
/*NOTREACHED*/ |
629 |
} |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
630 |
if (vtp->vt_global_vops) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
631 |
*(vtp->vt_global_vops) = vtp->vt_vops; |
2621 | 632 |
} |
633 |
sdev_free_vtab(templ); |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
634 |
return (vtp->vt_vops); |
2621 | 635 |
} |
636 |
return (sdev_vnodeops); |
|
637 |
} |
|
638 |
||
639 |
/* child inherits the persistence of the parent */ |
|
640 |
if (SDEV_IS_PERSIST(dv->sdev_dotdot)) |
|
641 |
dv->sdev_flags |= SDEV_PERSIST; |
|
642 |
||
643 |
return (sdev_vnodeops); |
|
644 |
} |
|
645 |
||
646 |
static void |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
647 |
sdev_set_no_negcache(struct sdev_node *dv) |
2621 | 648 |
{ |
649 |
int i; |
|
650 |
char *path; |
|
651 |
||
652 |
ASSERT(dv->sdev_path); |
|
653 |
path = dv->sdev_path + strlen("/dev/"); |
|
654 |
||
655 |
for (i = 0; vtab[i].vt_name; i++) { |
|
656 |
if (strcmp(vtab[i].vt_name, path) == 0) { |
|
657 |
if (vtab[i].vt_flags & SDEV_NO_NCACHE) |
|
658 |
dv->sdev_flags |= SDEV_NO_NCACHE; |
|
659 |
break; |
|
660 |
} |
|
661 |
} |
|
662 |
} |
|
663 |
||
664 |
void * |
|
665 |
sdev_get_vtor(struct sdev_node *dv) |
|
666 |
{ |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
667 |
struct sdev_vop_table *vtp; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
668 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
669 |
vtp = sdev_match(dv); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
670 |
if (vtp) |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
671 |
return ((void *)vtp->vt_vtor); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
672 |
else |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
673 |
return (NULL); |
2621 | 674 |
} |
675 |
||
676 |
/* |
|
677 |
* Build the base root inode |
|
678 |
*/ |
|
679 |
ino_t |
|
680 |
sdev_mkino(struct sdev_node *dv) |
|
681 |
{ |
|
682 |
ino_t ino; |
|
683 |
||
684 |
/* |
|
685 |
* for now, follow the lead of tmpfs here |
|
686 |
* need to someday understand the requirements here |
|
687 |
*/ |
|
688 |
ino = (ino_t)(uint32_t)((uintptr_t)dv >> 3); |
|
689 |
ino += SDEV_ROOTINO + 1; |
|
690 |
||
691 |
return (ino); |
|
692 |
} |
|
693 |
||
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
694 |
int |
2621 | 695 |
sdev_getlink(struct vnode *linkvp, char **link) |
696 |
{ |
|
697 |
int err; |
|
698 |
char *buf; |
|
699 |
struct uio uio = {0}; |
|
700 |
struct iovec iov = {0}; |
|
701 |
||
702 |
if (linkvp == NULL) |
|
703 |
return (ENOENT); |
|
704 |
ASSERT(linkvp->v_type == VLNK); |
|
705 |
||
706 |
buf = kmem_zalloc(MAXPATHLEN, KM_SLEEP); |
|
707 |
iov.iov_base = buf; |
|
708 |
iov.iov_len = MAXPATHLEN; |
|
709 |
uio.uio_iov = &iov; |
|
710 |
uio.uio_iovcnt = 1; |
|
711 |
uio.uio_resid = MAXPATHLEN; |
|
712 |
uio.uio_segflg = UIO_SYSSPACE; |
|
713 |
uio.uio_llimit = MAXOFFSET_T; |
|
714 |
||
5331 | 715 |
err = VOP_READLINK(linkvp, &uio, kcred, NULL); |
2621 | 716 |
if (err) { |
717 |
cmn_err(CE_WARN, "readlink %s failed in dev\n", buf); |
|
718 |
kmem_free(buf, MAXPATHLEN); |
|
719 |
return (ENOENT); |
|
720 |
} |
|
721 |
||
722 |
/* mission complete */ |
|
723 |
*link = i_ddi_strdup(buf, KM_SLEEP); |
|
724 |
kmem_free(buf, MAXPATHLEN); |
|
725 |
return (0); |
|
726 |
} |
|
727 |
||
728 |
/* |
|
729 |
* A convenient wrapper to get the devfs node vnode for a device |
|
730 |
* minor functionality: readlink() of a /dev symlink |
|
731 |
* Place the link into dv->sdev_symlink |
|
732 |
*/ |
|
733 |
static int |
|
734 |
sdev_follow_link(struct sdev_node *dv) |
|
735 |
{ |
|
736 |
int err; |
|
737 |
struct vnode *linkvp; |
|
738 |
char *link = NULL; |
|
739 |
||
740 |
linkvp = SDEVTOV(dv); |
|
741 |
if (linkvp == NULL) |
|
742 |
return (ENOENT); |
|
743 |
ASSERT(linkvp->v_type == VLNK); |
|
744 |
err = sdev_getlink(linkvp, &link); |
|
745 |
if (err) { |
|
746 |
(void) sdev_nodezombied(dv); |
|
747 |
dv->sdev_symlink = NULL; |
|
748 |
return (ENOENT); |
|
749 |
} |
|
750 |
||
751 |
ASSERT(link != NULL); |
|
752 |
dv->sdev_symlink = link; |
|
753 |
return (0); |
|
754 |
} |
|
755 |
||
756 |
static int |
|
757 |
sdev_node_check(struct sdev_node *dv, struct vattr *nvap, void *nargs) |
|
758 |
{ |
|
759 |
vtype_t otype = SDEVTOV(dv)->v_type; |
|
760 |
||
761 |
/* |
|
762 |
* existing sdev_node has a different type. |
|
763 |
*/ |
|
764 |
if (otype != nvap->va_type) { |
|
765 |
sdcmn_err9(("sdev_node_check: existing node " |
|
766 |
" %s type %d does not match new node type %d\n", |
|
767 |
dv->sdev_name, otype, nvap->va_type)); |
|
768 |
return (EEXIST); |
|
769 |
} |
|
770 |
||
771 |
/* |
|
772 |
* For a symlink, the target should be the same. |
|
773 |
*/ |
|
774 |
if (otype == VLNK) { |
|
775 |
ASSERT(nargs != NULL); |
|
776 |
ASSERT(dv->sdev_symlink != NULL); |
|
777 |
if (strcmp(dv->sdev_symlink, (char *)nargs) != 0) { |
|
778 |
sdcmn_err9(("sdev_node_check: existing node " |
|
779 |
" %s has different symlink %s as new node " |
|
780 |
" %s\n", dv->sdev_name, dv->sdev_symlink, |
|
781 |
(char *)nargs)); |
|
782 |
return (EEXIST); |
|
783 |
} |
|
784 |
} |
|
785 |
||
786 |
return (0); |
|
787 |
} |
|
788 |
||
789 |
/* |
|
790 |
* sdev_mknode - a wrapper for sdev_nodeinit(), sdev_nodeready() |
|
791 |
* |
|
792 |
* arguments: |
|
793 |
* - ddv (parent) |
|
794 |
* - nm (child name) |
|
795 |
* - newdv (sdev_node for nm is returned here) |
|
796 |
* - vap (vattr for the node to be created, va_type should be set. |
|
6335
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
797 |
* - avp (attribute vnode) |
2621 | 798 |
* the defaults should be used if unknown) |
799 |
* - cred |
|
800 |
* - args |
|
801 |
* . tnm (for VLNK) |
|
802 |
* . global sdev_node (for !SDEV_GLOBAL) |
|
803 |
* - state: SDEV_INIT, SDEV_READY |
|
804 |
* |
|
805 |
* only ddv, nm, newddv, vap, cred are required for sdev_mknode(SDEV_INIT) |
|
806 |
* |
|
807 |
* NOTE: directory contents writers lock needs to be held before |
|
808 |
* calling this routine. |
|
809 |
*/ |
|
810 |
int |
|
811 |
sdev_mknode(struct sdev_node *ddv, char *nm, struct sdev_node **newdv, |
|
812 |
struct vattr *vap, struct vnode *avp, void *args, struct cred *cred, |
|
813 |
sdev_node_state_t state) |
|
814 |
{ |
|
815 |
int error = 0; |
|
816 |
sdev_node_state_t node_state; |
|
817 |
struct sdev_node *dv = NULL; |
|
818 |
||
819 |
ASSERT(state != SDEV_ZOMBIE); |
|
820 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
|
821 |
||
822 |
if (*newdv) { |
|
823 |
dv = *newdv; |
|
824 |
} else { |
|
825 |
/* allocate and initialize a sdev_node */ |
|
826 |
if (ddv->sdev_state == SDEV_ZOMBIE) { |
|
827 |
sdcmn_err9(("sdev_mknode: parent %s ZOMBIEd\n", |
|
828 |
ddv->sdev_path)); |
|
829 |
return (ENOENT); |
|
830 |
} |
|
831 |
||
832 |
error = sdev_nodeinit(ddv, nm, &dv, vap); |
|
833 |
if (error != 0) { |
|
834 |
sdcmn_err9(("sdev_mknode: error %d," |
|
835 |
" name %s can not be initialized\n", |
|
836 |
error, nm)); |
|
6335
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
837 |
return (error); |
2621 | 838 |
} |
839 |
ASSERT(dv); |
|
840 |
||
841 |
/* insert into the directory cache */ |
|
842 |
error = sdev_cache_update(ddv, &dv, nm, SDEV_CACHE_ADD); |
|
843 |
if (error) { |
|
844 |
sdcmn_err9(("sdev_mknode: node %s can not" |
|
845 |
" be added into directory cache\n", nm)); |
|
846 |
return (ENOENT); |
|
847 |
} |
|
848 |
} |
|
849 |
||
850 |
ASSERT(dv); |
|
851 |
node_state = dv->sdev_state; |
|
852 |
ASSERT(node_state != SDEV_ZOMBIE); |
|
853 |
||
854 |
if (state == SDEV_READY) { |
|
855 |
switch (node_state) { |
|
856 |
case SDEV_INIT: |
|
857 |
error = sdev_nodeready(dv, vap, avp, args, cred); |
|
858 |
if (error) { |
|
859 |
sdcmn_err9(("sdev_mknode: node %s can NOT" |
|
860 |
" be transitioned into READY state, " |
|
861 |
"error %d\n", nm, error)); |
|
862 |
} |
|
863 |
break; |
|
864 |
case SDEV_READY: |
|
865 |
/* |
|
866 |
* Do some sanity checking to make sure |
|
867 |
* the existing sdev_node is what has been |
|
868 |
* asked for. |
|
869 |
*/ |
|
870 |
error = sdev_node_check(dv, vap, args); |
|
871 |
break; |
|
872 |
default: |
|
873 |
break; |
|
874 |
} |
|
875 |
} |
|
876 |
||
877 |
if (!error) { |
|
878 |
*newdv = dv; |
|
879 |
ASSERT((*newdv)->sdev_state != SDEV_ZOMBIE); |
|
880 |
} else { |
|
881 |
SDEV_SIMPLE_RELE(dv); |
|
882 |
*newdv = NULL; |
|
883 |
} |
|
884 |
||
885 |
return (error); |
|
886 |
} |
|
887 |
||
888 |
/* |
|
6335
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
889 |
* convenient wrapper to change vp's ATIME, CTIME and MTIME |
2621 | 890 |
*/ |
891 |
void |
|
892 |
sdev_update_timestamps(struct vnode *vp, cred_t *cred, uint_t mask) |
|
893 |
{ |
|
894 |
struct vattr attr; |
|
895 |
timestruc_t now; |
|
896 |
int err; |
|
897 |
||
898 |
ASSERT(vp); |
|
899 |
gethrestime(&now); |
|
900 |
if (mask & AT_CTIME) |
|
901 |
attr.va_ctime = now; |
|
902 |
if (mask & AT_MTIME) |
|
903 |
attr.va_mtime = now; |
|
904 |
if (mask & AT_ATIME) |
|
905 |
attr.va_atime = now; |
|
906 |
||
907 |
attr.va_mask = (mask & AT_TIMES); |
|
908 |
err = VOP_SETATTR(vp, &attr, 0, cred, NULL); |
|
909 |
if (err && (err != EROFS)) { |
|
910 |
sdcmn_err(("update timestamps error %d\n", err)); |
|
911 |
} |
|
912 |
} |
|
913 |
||
914 |
/* |
|
915 |
* the backing store vnode is released here |
|
916 |
*/ |
|
917 |
/*ARGSUSED1*/ |
|
918 |
void |
|
919 |
sdev_nodedestroy(struct sdev_node *dv, uint_t flags) |
|
920 |
{ |
|
921 |
/* no references */ |
|
922 |
ASSERT(dv->sdev_nlink == 0); |
|
923 |
||
924 |
if (dv->sdev_attrvp != NULLVP) { |
|
925 |
VN_RELE(dv->sdev_attrvp); |
|
926 |
/* |
|
927 |
* reset the attrvp so that no more |
|
928 |
* references can be made on this already |
|
929 |
* vn_rele() vnode |
|
930 |
*/ |
|
931 |
dv->sdev_attrvp = NULLVP; |
|
932 |
} |
|
933 |
||
934 |
if (dv->sdev_attr != NULL) { |
|
935 |
kmem_free(dv->sdev_attr, sizeof (struct vattr)); |
|
936 |
dv->sdev_attr = NULL; |
|
937 |
} |
|
938 |
||
939 |
if (dv->sdev_name != NULL) { |
|
940 |
kmem_free(dv->sdev_name, dv->sdev_namelen + 1); |
|
941 |
dv->sdev_name = NULL; |
|
942 |
} |
|
943 |
||
944 |
if (dv->sdev_symlink != NULL) { |
|
945 |
kmem_free(dv->sdev_symlink, strlen(dv->sdev_symlink) + 1); |
|
946 |
dv->sdev_symlink = NULL; |
|
947 |
} |
|
948 |
||
949 |
if (dv->sdev_path) { |
|
950 |
kmem_free(dv->sdev_path, strlen(dv->sdev_path) + 1); |
|
951 |
dv->sdev_path = NULL; |
|
952 |
} |
|
953 |
||
954 |
if (!SDEV_IS_GLOBAL(dv)) |
|
955 |
sdev_prof_free(dv); |
|
956 |
||
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
957 |
if (SDEVTOV(dv)->v_type == VDIR) { |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
958 |
ASSERT(SDEV_FIRST_ENTRY(dv) == NULL); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
959 |
avl_destroy(&dv->sdev_entries); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
960 |
} |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
961 |
|
2621 | 962 |
mutex_destroy(&dv->sdev_lookup_lock); |
963 |
cv_destroy(&dv->sdev_lookup_cv); |
|
964 |
||
965 |
/* return node to initial state as per constructor */ |
|
966 |
(void) memset((void *)&dv->sdev_instance_data, 0, |
|
967 |
sizeof (dv->sdev_instance_data)); |
|
968 |
vn_invalid(SDEVTOV(dv)); |
|
969 |
kmem_cache_free(sdev_node_cache, dv); |
|
970 |
} |
|
971 |
||
972 |
/* |
|
973 |
* DIRECTORY CACHE lookup |
|
974 |
*/ |
|
975 |
struct sdev_node * |
|
976 |
sdev_findbyname(struct sdev_node *ddv, char *nm) |
|
977 |
{ |
|
978 |
struct sdev_node *dv; |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
979 |
struct sdev_node dvtmp; |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
980 |
avl_index_t where; |
2621 | 981 |
|
982 |
ASSERT(RW_LOCK_HELD(&ddv->sdev_contents)); |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
983 |
|
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
984 |
dvtmp.sdev_name = nm; |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
985 |
dv = avl_find(&ddv->sdev_entries, &dvtmp, &where); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
986 |
if (dv) { |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
987 |
ASSERT(dv->sdev_dotdot == ddv); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
988 |
ASSERT(strcmp(dv->sdev_name, nm) == 0); |
6347
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
989 |
SDEV_HOLD(dv); |
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
990 |
return (dv); |
2621 | 991 |
} |
992 |
return (NULL); |
|
993 |
} |
|
994 |
||
995 |
/* |
|
996 |
* Inserts a new sdev_node in a parent directory |
|
997 |
*/ |
|
998 |
void |
|
999 |
sdev_direnter(struct sdev_node *ddv, struct sdev_node *dv) |
|
1000 |
{ |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
1001 |
avl_index_t where; |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
1002 |
|
2621 | 1003 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
1004 |
ASSERT(SDEVTOV(ddv)->v_type == VDIR); |
|
1005 |
ASSERT(ddv->sdev_nlink >= 2); |
|
1006 |
ASSERT(dv->sdev_nlink == 0); |
|
1007 |
||
1008 |
dv->sdev_dotdot = ddv; |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
1009 |
VERIFY(avl_find(&ddv->sdev_entries, dv, &where) == NULL); |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
1010 |
avl_insert(&ddv->sdev_entries, dv, where); |
2621 | 1011 |
ddv->sdev_nlink++; |
1012 |
} |
|
1013 |
||
1014 |
/* |
|
1015 |
* The following check is needed because while sdev_nodes are linked |
|
1016 |
* in SDEV_INIT state, they have their link counts incremented only |
|
1017 |
* in SDEV_READY state. |
|
1018 |
*/ |
|
1019 |
static void |
|
1020 |
decr_link(struct sdev_node *dv) |
|
1021 |
{ |
|
1022 |
if (dv->sdev_state != SDEV_INIT) |
|
1023 |
dv->sdev_nlink--; |
|
1024 |
else |
|
1025 |
ASSERT(dv->sdev_nlink == 0); |
|
1026 |
} |
|
1027 |
||
1028 |
/* |
|
1029 |
* Delete an existing dv from directory cache |
|
1030 |
* |
|
1031 |
* In the case of a node is still held by non-zero reference count, |
|
1032 |
* the node is put into ZOMBIE state. Once the reference count |
|
1033 |
* reaches "0", the node is unlinked and destroyed, |
|
1034 |
* in sdev_inactive(). |
|
1035 |
*/ |
|
1036 |
static int |
|
1037 |
sdev_dirdelete(struct sdev_node *ddv, struct sdev_node *dv) |
|
1038 |
{ |
|
1039 |
struct vnode *vp; |
|
1040 |
||
1041 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
|
1042 |
||
1043 |
vp = SDEVTOV(dv); |
|
1044 |
mutex_enter(&vp->v_lock); |
|
1045 |
||
1046 |
/* dv is held still */ |
|
1047 |
if (vp->v_count > 1) { |
|
1048 |
rw_enter(&dv->sdev_contents, RW_WRITER); |
|
1049 |
if (dv->sdev_state == SDEV_READY) { |
|
1050 |
sdcmn_err9(( |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1051 |
"sdev_dirdelete: node %s busy with count %d\n", |
2621 | 1052 |
dv->sdev_name, vp->v_count)); |
1053 |
dv->sdev_state = SDEV_ZOMBIE; |
|
1054 |
} |
|
1055 |
rw_exit(&dv->sdev_contents); |
|
1056 |
--vp->v_count; |
|
1057 |
mutex_exit(&vp->v_lock); |
|
1058 |
return (EBUSY); |
|
1059 |
} |
|
1060 |
ASSERT(vp->v_count == 1); |
|
1061 |
||
1062 |
/* unlink from the memory cache */ |
|
1063 |
ddv->sdev_nlink--; /* .. to above */ |
|
1064 |
if (vp->v_type == VDIR) { |
|
1065 |
decr_link(dv); /* . to self */ |
|
1066 |
} |
|
1067 |
||
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
1068 |
avl_remove(&ddv->sdev_entries, dv); |
2621 | 1069 |
decr_link(dv); /* name, back to zero */ |
1070 |
vp->v_count--; |
|
1071 |
mutex_exit(&vp->v_lock); |
|
1072 |
||
1073 |
/* destroy the node */ |
|
1074 |
sdev_nodedestroy(dv, 0); |
|
1075 |
return (0); |
|
1076 |
} |
|
1077 |
||
1078 |
/* |
|
1079 |
* check if the source is in the path of the target |
|
1080 |
* |
|
1081 |
* source and target are different |
|
1082 |
*/ |
|
1083 |
/*ARGSUSED2*/ |
|
1084 |
static int |
|
1085 |
sdev_checkpath(struct sdev_node *sdv, struct sdev_node *tdv, struct cred *cred) |
|
1086 |
{ |
|
1087 |
int error = 0; |
|
1088 |
struct sdev_node *dotdot, *dir; |
|
1089 |
||
1090 |
dotdot = tdv->sdev_dotdot; |
|
1091 |
ASSERT(dotdot); |
|
1092 |
||
1093 |
/* fs root */ |
|
1094 |
if (dotdot == tdv) { |
|
1095 |
return (0); |
|
1096 |
} |
|
1097 |
||
1098 |
for (;;) { |
|
1099 |
/* |
|
1100 |
* avoid error cases like |
|
1101 |
* mv a a/b |
|
1102 |
* mv a a/b/c |
|
1103 |
* etc. |
|
1104 |
*/ |
|
1105 |
if (dotdot == sdv) { |
|
1106 |
error = EINVAL; |
|
1107 |
break; |
|
1108 |
} |
|
1109 |
||
1110 |
dir = dotdot; |
|
1111 |
dotdot = dir->sdev_dotdot; |
|
1112 |
||
1113 |
/* done checking because root is reached */ |
|
1114 |
if (dir == dotdot) { |
|
1115 |
break; |
|
1116 |
} |
|
1117 |
} |
|
1118 |
return (error); |
|
1119 |
} |
|
1120 |
||
1121 |
int |
|
1122 |
sdev_rnmnode(struct sdev_node *oddv, struct sdev_node *odv, |
|
1123 |
struct sdev_node *nddv, struct sdev_node **ndvp, char *nnm, |
|
1124 |
struct cred *cred) |
|
1125 |
{ |
|
1126 |
int error = 0; |
|
1127 |
struct vnode *ovp = SDEVTOV(odv); |
|
1128 |
struct vnode *nvp; |
|
1129 |
struct vattr vattr; |
|
1130 |
int doingdir = (ovp->v_type == VDIR); |
|
1131 |
char *link = NULL; |
|
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1132 |
int samedir = (oddv == nddv) ? 1 : 0; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1133 |
int bkstore = 0; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1134 |
struct sdev_node *idv = NULL; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1135 |
struct sdev_node *ndv = NULL; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1136 |
timestruc_t now; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1137 |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
1138 |
vattr.va_mask = AT_TYPE|AT_MODE|AT_UID|AT_GID; |
5331 | 1139 |
error = VOP_GETATTR(ovp, &vattr, 0, cred, NULL); |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1140 |
if (error) |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1141 |
return (error); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1142 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1143 |
if (!samedir) |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1144 |
rw_enter(&oddv->sdev_contents, RW_WRITER); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1145 |
rw_enter(&nddv->sdev_contents, RW_WRITER); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1146 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1147 |
/* |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1148 |
* the source may have been deleted by another thread before |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1149 |
* we gets here. |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1150 |
*/ |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1151 |
if (odv->sdev_state != SDEV_READY) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1152 |
error = ENOENT; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1153 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1154 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1155 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1156 |
if (doingdir && (odv == nddv)) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1157 |
error = EINVAL; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1158 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1159 |
} |
2621 | 1160 |
|
1161 |
/* |
|
1162 |
* If renaming a directory, and the parents are different (".." must be |
|
1163 |
* changed) then the source dir must not be in the dir hierarchy above |
|
1164 |
* the target since it would orphan everything below the source dir. |
|
1165 |
*/ |
|
1166 |
if (doingdir && (oddv != nddv)) { |
|
1167 |
error = sdev_checkpath(odv, nddv, cred); |
|
1168 |
if (error) |
|
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1169 |
goto err_out; |
2621 | 1170 |
} |
1171 |
||
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1172 |
/* destination existing */ |
2621 | 1173 |
if (*ndvp) { |
1174 |
nvp = SDEVTOV(*ndvp); |
|
1175 |
ASSERT(nvp); |
|
1176 |
||
1177 |
/* handling renaming to itself */ |
|
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1178 |
if (odv == *ndvp) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1179 |
error = 0; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1180 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1181 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1182 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1183 |
if (nvp->v_type == VDIR) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1184 |
if (!doingdir) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1185 |
error = EISDIR; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1186 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1187 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1188 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1189 |
if (vn_vfswlock(nvp)) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1190 |
error = EBUSY; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1191 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1192 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1193 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1194 |
if (vn_mountedvfs(nvp) != NULL) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1195 |
vn_vfsunlock(nvp); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1196 |
error = EBUSY; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1197 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1198 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1199 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1200 |
/* in case dir1 exists in dir2 and "mv dir1 dir2" */ |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1201 |
if ((*ndvp)->sdev_nlink > 2) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1202 |
vn_vfsunlock(nvp); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1203 |
error = EEXIST; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1204 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1205 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1206 |
vn_vfsunlock(nvp); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1207 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1208 |
(void) sdev_dirdelete(nddv, *ndvp); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1209 |
*ndvp = NULL; |
6335
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
1210 |
ASSERT(nddv->sdev_attrvp); |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1211 |
error = VOP_RMDIR(nddv->sdev_attrvp, nnm, |
6065 | 1212 |
nddv->sdev_attrvp, cred, NULL, 0); |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1213 |
if (error) |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1214 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1215 |
} else { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1216 |
if (doingdir) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1217 |
error = ENOTDIR; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1218 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1219 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1220 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1221 |
if (SDEV_IS_PERSIST((*ndvp))) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1222 |
bkstore = 1; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1223 |
} |
2621 | 1224 |
|
1225 |
/* |
|
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1226 |
* get rid of the node from the directory cache |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1227 |
* note, in case EBUSY is returned, the ZOMBIE |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1228 |
* node is taken care in sdev_mknode. |
2621 | 1229 |
*/ |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1230 |
(void) sdev_dirdelete(nddv, *ndvp); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1231 |
*ndvp = NULL; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1232 |
if (bkstore) { |
6335
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
1233 |
ASSERT(nddv->sdev_attrvp); |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1234 |
error = VOP_REMOVE(nddv->sdev_attrvp, |
5331 | 1235 |
nnm, cred, NULL, 0); |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1236 |
if (error) |
6065 | 1237 |
goto err_out; |
2621 | 1238 |
} |
1239 |
} |
|
1240 |
} |
|
1241 |
||
1242 |
/* fix the source for a symlink */ |
|
1243 |
if (vattr.va_type == VLNK) { |
|
1244 |
if (odv->sdev_symlink == NULL) { |
|
1245 |
error = sdev_follow_link(odv); |
|
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1246 |
if (error) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1247 |
error = ENOENT; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1248 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1249 |
} |
2621 | 1250 |
} |
1251 |
ASSERT(odv->sdev_symlink); |
|
1252 |
link = i_ddi_strdup(odv->sdev_symlink, KM_SLEEP); |
|
1253 |
} |
|
1254 |
||
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1255 |
/* |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1256 |
* make a fresh node from the source attrs |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1257 |
*/ |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1258 |
ASSERT(RW_WRITE_HELD(&nddv->sdev_contents)); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1259 |
error = sdev_mknode(nddv, nnm, ndvp, &vattr, |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1260 |
NULL, (void *)link, cred, SDEV_READY); |
2621 | 1261 |
|
1262 |
if (link) |
|
1263 |
kmem_free(link, strlen(link) + 1); |
|
1264 |
||
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1265 |
if (error) |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1266 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1267 |
ASSERT(*ndvp); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1268 |
ASSERT((*ndvp)->sdev_state == SDEV_READY); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1269 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1270 |
/* move dir contents */ |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1271 |
if (doingdir) { |
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
1272 |
for (idv = SDEV_FIRST_ENTRY(odv); idv; |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
1273 |
idv = SDEV_NEXT_ENTRY(odv, idv)) { |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1274 |
error = sdev_rnmnode(odv, idv, |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1275 |
(struct sdev_node *)(*ndvp), &ndv, |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1276 |
idv->sdev_name, cred); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1277 |
if (error) |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1278 |
goto err_out; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1279 |
ndv = NULL; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1280 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1281 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1282 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1283 |
if ((*ndvp)->sdev_attrvp) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1284 |
sdev_update_timestamps((*ndvp)->sdev_attrvp, kcred, |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1285 |
AT_CTIME|AT_ATIME); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1286 |
} else { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1287 |
ASSERT((*ndvp)->sdev_attr); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1288 |
gethrestime(&now); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1289 |
(*ndvp)->sdev_attr->va_ctime = now; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1290 |
(*ndvp)->sdev_attr->va_atime = now; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1291 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1292 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1293 |
if (nddv->sdev_attrvp) { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1294 |
sdev_update_timestamps(nddv->sdev_attrvp, kcred, |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1295 |
AT_MTIME|AT_ATIME); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1296 |
} else { |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1297 |
ASSERT(nddv->sdev_attr); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1298 |
gethrestime(&now); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1299 |
nddv->sdev_attr->va_mtime = now; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1300 |
nddv->sdev_attr->va_atime = now; |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1301 |
} |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1302 |
rw_exit(&nddv->sdev_contents); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1303 |
if (!samedir) |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1304 |
rw_exit(&oddv->sdev_contents); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1305 |
|
2621 | 1306 |
SDEV_RELE(*ndvp); |
2729
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1307 |
return (error); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1308 |
|
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1309 |
err_out: |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1310 |
rw_exit(&nddv->sdev_contents); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1311 |
if (!samedir) |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1312 |
rw_exit(&oddv->sdev_contents); |
aeda30620271
6467958 inappropriate error message displayed from Devfsadm
llai1
parents:
2679
diff
changeset
|
1313 |
return (error); |
2621 | 1314 |
} |
1315 |
||
1316 |
/* |
|
1317 |
* Merge sdev_node specific information into an attribute structure. |
|
1318 |
* |
|
1319 |
* note: sdev_node is not locked here |
|
1320 |
*/ |
|
1321 |
void |
|
1322 |
sdev_vattr_merge(struct sdev_node *dv, struct vattr *vap) |
|
1323 |
{ |
|
1324 |
struct vnode *vp = SDEVTOV(dv); |
|
1325 |
||
1326 |
vap->va_nlink = dv->sdev_nlink; |
|
1327 |
vap->va_nodeid = dv->sdev_ino; |
|
1328 |
vap->va_fsid = SDEVTOV(dv->sdev_dotdot)->v_rdev; |
|
1329 |
vap->va_type = vp->v_type; |
|
1330 |
||
1331 |
if (vp->v_type == VDIR) { |
|
1332 |
vap->va_rdev = 0; |
|
1333 |
vap->va_fsid = vp->v_rdev; |
|
1334 |
} else if (vp->v_type == VLNK) { |
|
1335 |
vap->va_rdev = 0; |
|
1336 |
vap->va_mode &= ~S_IFMT; |
|
1337 |
vap->va_mode |= S_IFLNK; |
|
1338 |
} else if ((vp->v_type == VCHR) || (vp->v_type == VBLK)) { |
|
1339 |
vap->va_rdev = vp->v_rdev; |
|
1340 |
vap->va_mode &= ~S_IFMT; |
|
1341 |
if (vap->va_type == VCHR) |
|
1342 |
vap->va_mode |= S_IFCHR; |
|
1343 |
else |
|
1344 |
vap->va_mode |= S_IFBLK; |
|
1345 |
} else { |
|
1346 |
vap->va_rdev = 0; |
|
1347 |
} |
|
1348 |
} |
|
1349 |
||
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1350 |
struct vattr * |
2621 | 1351 |
sdev_getdefault_attr(enum vtype type) |
1352 |
{ |
|
1353 |
if (type == VDIR) |
|
1354 |
return (&sdev_vattr_dir); |
|
1355 |
else if (type == VCHR) |
|
1356 |
return (&sdev_vattr_chr); |
|
1357 |
else if (type == VBLK) |
|
1358 |
return (&sdev_vattr_blk); |
|
1359 |
else if (type == VLNK) |
|
1360 |
return (&sdev_vattr_lnk); |
|
1361 |
else |
|
1362 |
return (NULL); |
|
1363 |
} |
|
1364 |
int |
|
1365 |
sdev_to_vp(struct sdev_node *dv, struct vnode **vpp) |
|
1366 |
{ |
|
1367 |
int rv = 0; |
|
1368 |
struct vnode *vp = SDEVTOV(dv); |
|
1369 |
||
1370 |
switch (vp->v_type) { |
|
1371 |
case VCHR: |
|
1372 |
case VBLK: |
|
1373 |
/* |
|
1374 |
* If vnode is a device, return special vnode instead |
|
1375 |
* (though it knows all about -us- via sp->s_realvp) |
|
1376 |
*/ |
|
1377 |
*vpp = specvp(vp, vp->v_rdev, vp->v_type, kcred); |
|
1378 |
VN_RELE(vp); |
|
1379 |
if (*vpp == NULLVP) |
|
1380 |
rv = ENOSYS; |
|
1381 |
break; |
|
1382 |
default: /* most types are returned as is */ |
|
1383 |
*vpp = vp; |
|
1384 |
break; |
|
1385 |
} |
|
1386 |
return (rv); |
|
1387 |
} |
|
1388 |
||
1389 |
/* |
|
1390 |
* junction between devname and root file system, e.g. ufs |
|
1391 |
*/ |
|
1392 |
int |
|
1393 |
devname_backstore_lookup(struct sdev_node *ddv, char *nm, struct vnode **rvp) |
|
1394 |
{ |
|
1395 |
struct vnode *rdvp = ddv->sdev_attrvp; |
|
1396 |
int rval = 0; |
|
1397 |
||
1398 |
ASSERT(rdvp); |
|
1399 |
||
5331 | 1400 |
rval = VOP_LOOKUP(rdvp, nm, rvp, NULL, 0, NULL, kcred, NULL, NULL, |
1401 |
NULL); |
|
2621 | 1402 |
return (rval); |
1403 |
} |
|
1404 |
||
1405 |
static int |
|
1406 |
sdev_filldir_from_store(struct sdev_node *ddv, int dlen, struct cred *cred) |
|
1407 |
{ |
|
1408 |
struct sdev_node *dv = NULL; |
|
1409 |
char *nm; |
|
1410 |
struct vnode *dirvp; |
|
1411 |
int error; |
|
1412 |
vnode_t *vp; |
|
1413 |
int eof; |
|
1414 |
struct iovec iov; |
|
1415 |
struct uio uio; |
|
1416 |
struct dirent64 *dp; |
|
1417 |
dirent64_t *dbuf; |
|
1418 |
size_t dbuflen; |
|
1419 |
struct vattr vattr; |
|
1420 |
char *link = NULL; |
|
1421 |
||
1422 |
if (ddv->sdev_attrvp == NULL) |
|
1423 |
return (0); |
|
1424 |
if (!(ddv->sdev_flags & SDEV_BUILD)) |
|
1425 |
return (0); |
|
1426 |
||
1427 |
dirvp = ddv->sdev_attrvp; |
|
1428 |
VN_HOLD(dirvp); |
|
1429 |
dbuf = kmem_zalloc(dlen, KM_SLEEP); |
|
1430 |
||
1431 |
uio.uio_iov = &iov; |
|
1432 |
uio.uio_iovcnt = 1; |
|
1433 |
uio.uio_segflg = UIO_SYSSPACE; |
|
1434 |
uio.uio_fmode = 0; |
|
1435 |
uio.uio_extflg = UIO_COPY_CACHED; |
|
1436 |
uio.uio_loffset = 0; |
|
1437 |
uio.uio_llimit = MAXOFFSET_T; |
|
1438 |
||
1439 |
eof = 0; |
|
1440 |
error = 0; |
|
1441 |
while (!error && !eof) { |
|
1442 |
uio.uio_resid = dlen; |
|
1443 |
iov.iov_base = (char *)dbuf; |
|
1444 |
iov.iov_len = dlen; |
|
1445 |
(void) VOP_RWLOCK(dirvp, V_WRITELOCK_FALSE, NULL); |
|
5331 | 1446 |
error = VOP_READDIR(dirvp, &uio, kcred, &eof, NULL, 0); |
2621 | 1447 |
VOP_RWUNLOCK(dirvp, V_WRITELOCK_FALSE, NULL); |
1448 |
||
1449 |
dbuflen = dlen - uio.uio_resid; |
|
1450 |
if (error || dbuflen == 0) |
|
1451 |
break; |
|
1452 |
||
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1453 |
if (!(ddv->sdev_flags & SDEV_BUILD)) |
2621 | 1454 |
break; |
1455 |
||
1456 |
for (dp = dbuf; ((intptr_t)dp < |
|
1457 |
(intptr_t)dbuf + dbuflen); |
|
1458 |
dp = (dirent64_t *)((intptr_t)dp + dp->d_reclen)) { |
|
1459 |
nm = dp->d_name; |
|
1460 |
||
1461 |
if (strcmp(nm, ".") == 0 || |
|
1462 |
strcmp(nm, "..") == 0) |
|
1463 |
continue; |
|
1464 |
||
1465 |
vp = NULLVP; |
|
1466 |
dv = sdev_cache_lookup(ddv, nm); |
|
1467 |
if (dv) { |
|
1468 |
if (dv->sdev_state != SDEV_ZOMBIE) { |
|
1469 |
SDEV_SIMPLE_RELE(dv); |
|
1470 |
} else { |
|
1471 |
/* |
|
1472 |
* A ZOMBIE node may not have been |
|
1473 |
* cleaned up from the backing store, |
|
1474 |
* bypass this entry in this case, |
|
1475 |
* and clean it up from the directory |
|
1476 |
* cache if this is the last call. |
|
1477 |
*/ |
|
1478 |
(void) sdev_dirdelete(ddv, dv); |
|
1479 |
} |
|
1480 |
continue; |
|
1481 |
} |
|
1482 |
||
1483 |
/* refill the cache if not already */ |
|
1484 |
error = devname_backstore_lookup(ddv, nm, &vp); |
|
1485 |
if (error) |
|
1486 |
continue; |
|
1487 |
||
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
1488 |
vattr.va_mask = AT_TYPE|AT_MODE|AT_UID|AT_GID; |
5331 | 1489 |
error = VOP_GETATTR(vp, &vattr, 0, cred, NULL); |
2621 | 1490 |
if (error) |
1491 |
continue; |
|
1492 |
||
1493 |
if (vattr.va_type == VLNK) { |
|
1494 |
error = sdev_getlink(vp, &link); |
|
1495 |
if (error) { |
|
1496 |
continue; |
|
1497 |
} |
|
1498 |
ASSERT(link != NULL); |
|
1499 |
} |
|
1500 |
||
1501 |
if (!rw_tryupgrade(&ddv->sdev_contents)) { |
|
1502 |
rw_exit(&ddv->sdev_contents); |
|
1503 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
|
1504 |
} |
|
1505 |
error = sdev_mknode(ddv, nm, &dv, &vattr, vp, link, |
|
1506 |
cred, SDEV_READY); |
|
1507 |
rw_downgrade(&ddv->sdev_contents); |
|
1508 |
||
1509 |
if (link != NULL) { |
|
1510 |
kmem_free(link, strlen(link) + 1); |
|
1511 |
link = NULL; |
|
1512 |
} |
|
1513 |
||
1514 |
if (!error) { |
|
1515 |
ASSERT(dv); |
|
1516 |
ASSERT(dv->sdev_state != SDEV_ZOMBIE); |
|
1517 |
SDEV_SIMPLE_RELE(dv); |
|
1518 |
} |
|
1519 |
vp = NULL; |
|
1520 |
dv = NULL; |
|
1521 |
} |
|
1522 |
} |
|
1523 |
||
1524 |
done: |
|
1525 |
VN_RELE(dirvp); |
|
1526 |
kmem_free(dbuf, dlen); |
|
1527 |
||
1528 |
return (error); |
|
1529 |
} |
|
1530 |
||
3843
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1531 |
void |
2621 | 1532 |
sdev_filldir_dynamic(struct sdev_node *ddv) |
1533 |
{ |
|
1534 |
int error; |
|
1535 |
int i; |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
1536 |
struct vattr vattr; |
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
1537 |
struct vattr *vap = &vattr; |
2621 | 1538 |
char *nm = NULL; |
1539 |
struct sdev_node *dv = NULL; |
|
1540 |
||
3843
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1541 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1542 |
ASSERT((ddv->sdev_flags & SDEV_BUILD)); |
2621 | 1543 |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
1544 |
*vap = *sdev_getdefault_attr(VDIR); /* note structure copy here */ |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1545 |
gethrestime(&vap->va_atime); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1546 |
vap->va_mtime = vap->va_atime; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1547 |
vap->va_ctime = vap->va_atime; |
2621 | 1548 |
for (i = 0; vtab[i].vt_name != NULL; i++) { |
12923
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
1549 |
/* |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
1550 |
* This early, we may be in a read-only /dev |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
1551 |
* environment: leave the creation of any nodes we'd |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
1552 |
* attempt to persist to devfsadm. |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
1553 |
*/ |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
1554 |
if (vtab[i].vt_flags & SDEV_PERSIST) |
3c964548d01f
6968425 Seeing build_devlink_list: readlink failed messages in console with Osolb143
John Levon <john.levon@sun.com>
parents:
12717
diff
changeset
|
1555 |
continue; |
2621 | 1556 |
nm = vtab[i].vt_name; |
1557 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
|
3843
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1558 |
dv = NULL; |
2621 | 1559 |
error = sdev_mknode(ddv, nm, &dv, vap, NULL, |
1560 |
NULL, kcred, SDEV_READY); |
|
3843
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1561 |
if (error) { |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1562 |
cmn_err(CE_WARN, "%s/%s: error %d\n", |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1563 |
ddv->sdev_name, nm, error); |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1564 |
} else { |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1565 |
ASSERT(dv); |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1566 |
ASSERT(dv->sdev_state != SDEV_ZOMBIE); |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1567 |
SDEV_SIMPLE_RELE(dv); |
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
1568 |
} |
2621 | 1569 |
} |
1570 |
} |
|
1571 |
||
1572 |
/* |
|
1573 |
* Creating a backing store entry based on sdev_attr. |
|
1574 |
* This is called either as part of node creation in a persistent directory |
|
1575 |
* or from setattr/setsecattr to persist access attributes across reboot. |
|
1576 |
*/ |
|
1577 |
int |
|
1578 |
sdev_shadow_node(struct sdev_node *dv, struct cred *cred) |
|
1579 |
{ |
|
1580 |
int error = 0; |
|
1581 |
struct vnode *dvp = SDEVTOV(dv->sdev_dotdot); |
|
1582 |
struct vnode *rdvp = VTOSDEV(dvp)->sdev_attrvp; |
|
1583 |
struct vattr *vap = dv->sdev_attr; |
|
1584 |
char *nm = dv->sdev_name; |
|
1585 |
struct vnode *tmpvp, **rvp = &tmpvp, *rrvp = NULL; |
|
1586 |
||
1587 |
ASSERT(dv && dv->sdev_name && rdvp); |
|
1588 |
ASSERT(RW_WRITE_HELD(&dv->sdev_contents) && dv->sdev_attrvp == NULL); |
|
1589 |
||
1590 |
lookup: |
|
1591 |
/* try to find it in the backing store */ |
|
5331 | 1592 |
error = VOP_LOOKUP(rdvp, nm, rvp, NULL, 0, NULL, cred, NULL, NULL, |
1593 |
NULL); |
|
2621 | 1594 |
if (error == 0) { |
5331 | 1595 |
if (VOP_REALVP(*rvp, &rrvp, NULL) == 0) { |
2621 | 1596 |
VN_HOLD(rrvp); |
1597 |
VN_RELE(*rvp); |
|
1598 |
*rvp = rrvp; |
|
1599 |
} |
|
1600 |
||
1601 |
kmem_free(dv->sdev_attr, sizeof (vattr_t)); |
|
1602 |
dv->sdev_attr = NULL; |
|
1603 |
dv->sdev_attrvp = *rvp; |
|
1604 |
return (0); |
|
1605 |
} |
|
1606 |
||
1607 |
/* let's try to persist the node */ |
|
1608 |
gethrestime(&vap->va_atime); |
|
1609 |
vap->va_mtime = vap->va_atime; |
|
1610 |
vap->va_ctime = vap->va_atime; |
|
1611 |
vap->va_mask |= AT_TYPE|AT_MODE; |
|
1612 |
switch (vap->va_type) { |
|
1613 |
case VDIR: |
|
5331 | 1614 |
error = VOP_MKDIR(rdvp, nm, vap, rvp, cred, NULL, 0, NULL); |
2621 | 1615 |
sdcmn_err9(("sdev_shadow_node: mkdir vp %p error %d\n", |
1616 |
(void *)(*rvp), error)); |
|
1617 |
break; |
|
1618 |
case VCHR: |
|
1619 |
case VBLK: |
|
1620 |
case VREG: |
|
1621 |
case VDOOR: |
|
1622 |
error = VOP_CREATE(rdvp, nm, vap, NONEXCL, VREAD|VWRITE, |
|
5331 | 1623 |
rvp, cred, 0, NULL, NULL); |
2621 | 1624 |
sdcmn_err9(("sdev_shadow_node: create vp %p, error %d\n", |
1625 |
(void *)(*rvp), error)); |
|
1626 |
if (!error) |
|
1627 |
VN_RELE(*rvp); |
|
1628 |
break; |
|
1629 |
case VLNK: |
|
1630 |
ASSERT(dv->sdev_symlink); |
|
5331 | 1631 |
error = VOP_SYMLINK(rdvp, nm, vap, dv->sdev_symlink, cred, |
1632 |
NULL, 0); |
|
2621 | 1633 |
sdcmn_err9(("sdev_shadow_node: create symlink error %d\n", |
1634 |
error)); |
|
1635 |
break; |
|
1636 |
default: |
|
1637 |
cmn_err(CE_PANIC, "dev: %s: sdev_shadow_node " |
|
1638 |
"create\n", nm); |
|
1639 |
/*NOTREACHED*/ |
|
1640 |
} |
|
1641 |
||
1642 |
/* go back to lookup to factor out spec node and set attrvp */ |
|
1643 |
if (error == 0) |
|
1644 |
goto lookup; |
|
1645 |
||
6335
04814a62796c
6525813 assertion failed: rdvp, file: ../../common/fs/dev/sdev_subr.c, line: 1463
jg
parents:
6260
diff
changeset
|
1646 |
sdcmn_err(("cannot persist %s - error %d\n", dv->sdev_path, error)); |
2621 | 1647 |
return (error); |
1648 |
} |
|
1649 |
||
1650 |
static int |
|
1651 |
sdev_cache_add(struct sdev_node *ddv, struct sdev_node **dv, char *nm) |
|
1652 |
{ |
|
1653 |
int error = 0; |
|
1654 |
struct sdev_node *dup = NULL; |
|
1655 |
||
1656 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
|
1657 |
if ((dup = sdev_findbyname(ddv, nm)) == NULL) { |
|
1658 |
sdev_direnter(ddv, *dv); |
|
1659 |
} else { |
|
1660 |
if (dup->sdev_state == SDEV_ZOMBIE) { |
|
1661 |
error = sdev_dirdelete(ddv, dup); |
|
1662 |
/* |
|
1663 |
* The ZOMBIE node is still hanging |
|
1664 |
* around with more than one reference counts. |
|
1665 |
* Fail the new node creation so that |
|
1666 |
* the directory cache won't have |
|
1667 |
* duplicate entries for the same named node |
|
1668 |
*/ |
|
1669 |
if (error == EBUSY) { |
|
1670 |
SDEV_SIMPLE_RELE(*dv); |
|
1671 |
sdev_nodedestroy(*dv, 0); |
|
1672 |
*dv = NULL; |
|
1673 |
return (error); |
|
1674 |
} |
|
1675 |
sdev_direnter(ddv, *dv); |
|
1676 |
} else { |
|
1677 |
ASSERT((*dv)->sdev_state != SDEV_ZOMBIE); |
|
1678 |
SDEV_SIMPLE_RELE(*dv); |
|
1679 |
sdev_nodedestroy(*dv, 0); |
|
1680 |
*dv = dup; |
|
1681 |
} |
|
1682 |
} |
|
1683 |
||
1684 |
return (0); |
|
1685 |
} |
|
1686 |
||
1687 |
static int |
|
1688 |
sdev_cache_delete(struct sdev_node *ddv, struct sdev_node **dv) |
|
1689 |
{ |
|
1690 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
|
1691 |
return (sdev_dirdelete(ddv, *dv)); |
|
1692 |
} |
|
1693 |
||
1694 |
/* |
|
1695 |
* update the in-core directory cache |
|
1696 |
*/ |
|
1697 |
int |
|
1698 |
sdev_cache_update(struct sdev_node *ddv, struct sdev_node **dv, char *nm, |
|
1699 |
sdev_cache_ops_t ops) |
|
1700 |
{ |
|
1701 |
int error = 0; |
|
1702 |
||
1703 |
ASSERT((SDEV_HELD(*dv))); |
|
1704 |
||
1705 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
|
1706 |
switch (ops) { |
|
1707 |
case SDEV_CACHE_ADD: |
|
1708 |
error = sdev_cache_add(ddv, dv, nm); |
|
1709 |
break; |
|
1710 |
case SDEV_CACHE_DELETE: |
|
1711 |
error = sdev_cache_delete(ddv, dv); |
|
1712 |
break; |
|
1713 |
default: |
|
1714 |
break; |
|
1715 |
} |
|
1716 |
||
1717 |
return (error); |
|
1718 |
} |
|
1719 |
||
1720 |
/* |
|
5331 | 1721 |
* retrieve the named entry from the directory cache |
2621 | 1722 |
*/ |
1723 |
struct sdev_node * |
|
1724 |
sdev_cache_lookup(struct sdev_node *ddv, char *nm) |
|
1725 |
{ |
|
1726 |
struct sdev_node *dv = NULL; |
|
1727 |
||
1728 |
ASSERT(RW_LOCK_HELD(&ddv->sdev_contents)); |
|
1729 |
dv = sdev_findbyname(ddv, nm); |
|
1730 |
||
1731 |
return (dv); |
|
1732 |
} |
|
1733 |
||
1734 |
/* |
|
1735 |
* Implicit reconfig for nodes constructed by a link generator |
|
1736 |
* Start devfsadm if needed, or if devfsadm is in progress, |
|
1737 |
* prepare to block on devfsadm either completing or |
|
1738 |
* constructing the desired node. As devfsadmd is global |
|
1739 |
* in scope, constructing all necessary nodes, we only |
|
1740 |
* need to initiate it once. |
|
1741 |
*/ |
|
1742 |
static int |
|
1743 |
sdev_call_devfsadmd(struct sdev_node *ddv, struct sdev_node *dv, char *nm) |
|
1744 |
{ |
|
1745 |
int error = 0; |
|
1746 |
||
1747 |
if (DEVNAME_DEVFSADM_IS_RUNNING(devfsadm_state)) { |
|
1748 |
sdcmn_err6(("lookup: waiting for %s/%s, 0x%x\n", |
|
1749 |
ddv->sdev_name, nm, devfsadm_state)); |
|
1750 |
mutex_enter(&dv->sdev_lookup_lock); |
|
1751 |
SDEV_BLOCK_OTHERS(dv, (SDEV_LOOKUP | SDEV_LGWAITING)); |
|
1752 |
mutex_exit(&dv->sdev_lookup_lock); |
|
1753 |
error = 0; |
|
1754 |
} else if (!DEVNAME_DEVFSADM_HAS_RUN(devfsadm_state)) { |
|
1755 |
sdcmn_err6(("lookup %s/%s starting devfsadm, 0x%x\n", |
|
6065 | 1756 |
ddv->sdev_name, nm, devfsadm_state)); |
2621 | 1757 |
|
1758 |
sdev_devfsadmd_thread(ddv, dv, kcred); |
|
1759 |
mutex_enter(&dv->sdev_lookup_lock); |
|
1760 |
SDEV_BLOCK_OTHERS(dv, |
|
1761 |
(SDEV_LOOKUP | SDEV_LGWAITING)); |
|
1762 |
mutex_exit(&dv->sdev_lookup_lock); |
|
1763 |
error = 0; |
|
1764 |
} else { |
|
1765 |
error = -1; |
|
1766 |
} |
|
1767 |
||
1768 |
return (error); |
|
1769 |
} |
|
1770 |
||
1771 |
/* |
|
1772 |
* Support for specialized device naming construction mechanisms |
|
1773 |
*/ |
|
1774 |
static int |
|
1775 |
sdev_call_dircallback(struct sdev_node *ddv, struct sdev_node **dvp, char *nm, |
|
1776 |
int (*callback)(struct sdev_node *, char *, void **, struct cred *, |
|
1777 |
void *, char *), int flags, struct cred *cred) |
|
1778 |
{ |
|
1779 |
int rv = 0; |
|
1780 |
char *physpath = NULL; |
|
1781 |
struct vattr vattr; |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
1782 |
struct vattr *vap = &vattr; |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1783 |
struct sdev_node *dv = NULL; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1784 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1785 |
ASSERT(RW_WRITE_HELD(&ddv->sdev_contents)); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1786 |
if (flags & SDEV_VLINK) { |
7688
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1787 |
physpath = kmem_zalloc(MAXPATHLEN, KM_SLEEP); |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1788 |
rv = callback(ddv, nm, (void *)&physpath, kcred, NULL, |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1789 |
NULL); |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1790 |
if (rv) { |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1791 |
kmem_free(physpath, MAXPATHLEN); |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1792 |
return (-1); |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1793 |
} |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1794 |
|
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
1795 |
*vap = *sdev_getdefault_attr(VLNK); /* structure copy */ |
7688
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1796 |
vap->va_size = strlen(physpath); |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1797 |
gethrestime(&vap->va_atime); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1798 |
vap->va_mtime = vap->va_atime; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1799 |
vap->va_ctime = vap->va_atime; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1800 |
|
7688
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1801 |
rv = sdev_mknode(ddv, nm, &dv, vap, NULL, |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1802 |
(void *)physpath, cred, SDEV_READY); |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1803 |
kmem_free(physpath, MAXPATHLEN); |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1804 |
if (rv) |
2757e6e1bb2a
PSARC 2006/591 Virtual Console
rui zang - Sun Microsystems - Beijing China <Aaron.Zang@Sun.COM>
parents:
6712
diff
changeset
|
1805 |
return (rv); |
2621 | 1806 |
} else if (flags & SDEV_VATTR) { |
1807 |
/* |
|
1808 |
* /dev/pts |
|
1809 |
* |
|
1810 |
* callback is responsible to set the basic attributes, |
|
1811 |
* e.g. va_type/va_uid/va_gid/ |
|
1812 |
* dev_t if VCHR or VBLK/ |
|
1813 |
*/ |
|
1814 |
ASSERT(callback); |
|
1815 |
rv = callback(ddv, nm, (void *)&vattr, kcred, NULL, NULL); |
|
1816 |
if (rv) { |
|
1817 |
sdcmn_err3(("devname_lookup_func: SDEV_NONE " |
|
1818 |
"callback failed \n")); |
|
1819 |
return (-1); |
|
1820 |
} |
|
1821 |
||
1822 |
rv = sdev_mknode(ddv, nm, &dv, &vattr, NULL, NULL, |
|
1823 |
cred, SDEV_READY); |
|
1824 |
||
1825 |
if (rv) |
|
1826 |
return (rv); |
|
1827 |
||
1828 |
} else { |
|
1829 |
impossible(("lookup: %s/%s by %s not supported (%d)\n", |
|
1830 |
SDEVTOV(ddv)->v_path, nm, curproc->p_user.u_comm, |
|
1831 |
__LINE__)); |
|
1832 |
rv = -1; |
|
1833 |
} |
|
1834 |
||
1835 |
*dvp = dv; |
|
1836 |
return (rv); |
|
1837 |
} |
|
1838 |
||
1839 |
static int |
|
1840 |
is_devfsadm_thread(char *exec_name) |
|
1841 |
{ |
|
1842 |
/* |
|
1843 |
* note: because devfsadmd -> /usr/sbin/devfsadm |
|
1844 |
* it is safe to use "devfsadm" to capture the lookups |
|
1845 |
* from devfsadm and its daemon version. |
|
1846 |
*/ |
|
1847 |
if (strcmp(exec_name, "devfsadm") == 0) |
|
1848 |
return (1); |
|
1849 |
return (0); |
|
1850 |
} |
|
1851 |
||
1852 |
/* |
|
1853 |
* Lookup Order: |
|
1854 |
* sdev_node cache; |
|
1855 |
* backing store (SDEV_PERSIST); |
|
1856 |
* DBNR: a. dir_ops implemented in the loadable modules; |
|
1857 |
* b. vnode ops in vtab. |
|
1858 |
*/ |
|
1859 |
int |
|
1860 |
devname_lookup_func(struct sdev_node *ddv, char *nm, struct vnode **vpp, |
|
1861 |
struct cred *cred, int (*callback)(struct sdev_node *, char *, void **, |
|
1862 |
struct cred *, void *, char *), int flags) |
|
1863 |
{ |
|
1864 |
int rv = 0, nmlen; |
|
1865 |
struct vnode *rvp = NULL; |
|
1866 |
struct sdev_node *dv = NULL; |
|
1867 |
int retried = 0; |
|
1868 |
int error = 0; |
|
1869 |
struct vattr vattr; |
|
1870 |
char *lookup_thread = curproc->p_user.u_comm; |
|
1871 |
int failed_flags = 0; |
|
1872 |
int (*vtor)(struct sdev_node *) = NULL; |
|
1873 |
int state; |
|
1874 |
int parent_state; |
|
1875 |
char *link = NULL; |
|
1876 |
||
1877 |
if (SDEVTOV(ddv)->v_type != VDIR) |
|
1878 |
return (ENOTDIR); |
|
1879 |
||
1880 |
/* |
|
1881 |
* Empty name or ., return node itself. |
|
1882 |
*/ |
|
1883 |
nmlen = strlen(nm); |
|
1884 |
if ((nmlen == 0) || ((nmlen == 1) && (nm[0] == '.'))) { |
|
1885 |
*vpp = SDEVTOV(ddv); |
|
1886 |
VN_HOLD(*vpp); |
|
1887 |
return (0); |
|
1888 |
} |
|
1889 |
||
1890 |
/* |
|
1891 |
* .., return the parent directory |
|
1892 |
*/ |
|
1893 |
if ((nmlen == 2) && (strcmp(nm, "..") == 0)) { |
|
1894 |
*vpp = SDEVTOV(ddv->sdev_dotdot); |
|
1895 |
VN_HOLD(*vpp); |
|
1896 |
return (0); |
|
1897 |
} |
|
1898 |
||
1899 |
rw_enter(&ddv->sdev_contents, RW_READER); |
|
1900 |
if (ddv->sdev_flags & SDEV_VTOR) { |
|
1901 |
vtor = (int (*)(struct sdev_node *))sdev_get_vtor(ddv); |
|
1902 |
ASSERT(vtor); |
|
1903 |
} |
|
1904 |
||
1905 |
tryagain: |
|
1906 |
/* |
|
1907 |
* (a) directory cache lookup: |
|
1908 |
*/ |
|
1909 |
ASSERT(RW_READ_HELD(&ddv->sdev_contents)); |
|
1910 |
parent_state = ddv->sdev_state; |
|
1911 |
dv = sdev_cache_lookup(ddv, nm); |
|
1912 |
if (dv) { |
|
1913 |
state = dv->sdev_state; |
|
1914 |
switch (state) { |
|
1915 |
case SDEV_INIT: |
|
1916 |
if (is_devfsadm_thread(lookup_thread)) |
|
1917 |
break; |
|
1918 |
||
1919 |
/* ZOMBIED parent won't allow node creation */ |
|
1920 |
if (parent_state == SDEV_ZOMBIE) { |
|
1921 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, |
|
1922 |
retried); |
|
1923 |
goto nolock_notfound; |
|
1924 |
} |
|
1925 |
||
1926 |
mutex_enter(&dv->sdev_lookup_lock); |
|
1927 |
/* compensate the threads started after devfsadm */ |
|
1928 |
if (DEVNAME_DEVFSADM_IS_RUNNING(devfsadm_state) && |
|
1929 |
!(SDEV_IS_LOOKUP(dv))) |
|
1930 |
SDEV_BLOCK_OTHERS(dv, |
|
1931 |
(SDEV_LOOKUP | SDEV_LGWAITING)); |
|
1932 |
||
1933 |
if (SDEV_IS_LOOKUP(dv)) { |
|
1934 |
failed_flags |= SLF_REBUILT; |
|
1935 |
rw_exit(&ddv->sdev_contents); |
|
1936 |
error = sdev_wait4lookup(dv, SDEV_LOOKUP); |
|
1937 |
mutex_exit(&dv->sdev_lookup_lock); |
|
1938 |
rw_enter(&ddv->sdev_contents, RW_READER); |
|
1939 |
||
1940 |
if (error != 0) { |
|
1941 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, |
|
1942 |
retried); |
|
1943 |
goto nolock_notfound; |
|
1944 |
} |
|
1945 |
||
1946 |
state = dv->sdev_state; |
|
1947 |
if (state == SDEV_INIT) { |
|
1948 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, |
|
1949 |
retried); |
|
1950 |
goto nolock_notfound; |
|
1951 |
} else if (state == SDEV_READY) { |
|
1952 |
goto found; |
|
1953 |
} else if (state == SDEV_ZOMBIE) { |
|
1954 |
rw_exit(&ddv->sdev_contents); |
|
1955 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, |
|
1956 |
retried); |
|
1957 |
SDEV_RELE(dv); |
|
1958 |
goto lookup_failed; |
|
1959 |
} |
|
1960 |
} else { |
|
1961 |
mutex_exit(&dv->sdev_lookup_lock); |
|
1962 |
} |
|
1963 |
break; |
|
1964 |
case SDEV_READY: |
|
1965 |
goto found; |
|
1966 |
case SDEV_ZOMBIE: |
|
1967 |
rw_exit(&ddv->sdev_contents); |
|
1968 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
1969 |
SDEV_RELE(dv); |
|
1970 |
goto lookup_failed; |
|
1971 |
default: |
|
1972 |
rw_exit(&ddv->sdev_contents); |
|
1973 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
1974 |
sdev_lookup_failed(ddv, nm, failed_flags); |
|
1975 |
*vpp = NULLVP; |
|
1976 |
return (ENOENT); |
|
1977 |
} |
|
1978 |
} |
|
1979 |
ASSERT(RW_READ_HELD(&ddv->sdev_contents)); |
|
1980 |
||
1981 |
/* |
|
1982 |
* ZOMBIED parent does not allow new node creation. |
|
1983 |
* bail out early |
|
1984 |
*/ |
|
1985 |
if (parent_state == SDEV_ZOMBIE) { |
|
1986 |
rw_exit(&ddv->sdev_contents); |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1987 |
*vpp = NULLVP; |
2621 | 1988 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
1989 |
return (ENOENT); |
|
1990 |
} |
|
1991 |
||
1992 |
/* |
|
1993 |
* (b0): backing store lookup |
|
1994 |
* SDEV_PERSIST is default except: |
|
1995 |
* 1) pts nodes |
|
1996 |
* 2) non-chmod'ed local nodes |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
1997 |
* 3) zvol nodes |
2621 | 1998 |
*/ |
1999 |
if (SDEV_IS_PERSIST(ddv)) { |
|
2000 |
error = devname_backstore_lookup(ddv, nm, &rvp); |
|
2001 |
||
2002 |
if (!error) { |
|
2003 |
||
11279
b69054bce66e
6906514 sdev_attrinit ignores va_mask, leading to whacky /dev/zcons vattrs
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
10588
diff
changeset
|
2004 |
vattr.va_mask = AT_TYPE|AT_MODE|AT_UID|AT_GID; |
5331 | 2005 |
error = VOP_GETATTR(rvp, &vattr, 0, cred, NULL); |
2621 | 2006 |
if (error) { |
2007 |
rw_exit(&ddv->sdev_contents); |
|
2008 |
if (dv) |
|
2009 |
SDEV_RELE(dv); |
|
2010 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
2011 |
sdev_lookup_failed(ddv, nm, failed_flags); |
|
2012 |
*vpp = NULLVP; |
|
2013 |
return (ENOENT); |
|
2014 |
} |
|
2015 |
||
2016 |
if (vattr.va_type == VLNK) { |
|
2017 |
error = sdev_getlink(rvp, &link); |
|
2018 |
if (error) { |
|
2019 |
rw_exit(&ddv->sdev_contents); |
|
2020 |
if (dv) |
|
2021 |
SDEV_RELE(dv); |
|
2022 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, |
|
2023 |
retried); |
|
2024 |
sdev_lookup_failed(ddv, nm, |
|
2025 |
failed_flags); |
|
2026 |
*vpp = NULLVP; |
|
2027 |
return (ENOENT); |
|
2028 |
} |
|
2029 |
ASSERT(link != NULL); |
|
2030 |
} |
|
2031 |
||
2032 |
if (!rw_tryupgrade(&ddv->sdev_contents)) { |
|
2033 |
rw_exit(&ddv->sdev_contents); |
|
2034 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
|
2035 |
} |
|
2036 |
error = sdev_mknode(ddv, nm, &dv, &vattr, |
|
2037 |
rvp, link, cred, SDEV_READY); |
|
2038 |
rw_downgrade(&ddv->sdev_contents); |
|
2039 |
||
2040 |
if (link != NULL) { |
|
2041 |
kmem_free(link, strlen(link) + 1); |
|
2042 |
link = NULL; |
|
2043 |
} |
|
2044 |
||
2045 |
if (error) { |
|
2046 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
2047 |
rw_exit(&ddv->sdev_contents); |
|
2048 |
if (dv) |
|
2049 |
SDEV_RELE(dv); |
|
2050 |
goto lookup_failed; |
|
2051 |
} else { |
|
2052 |
goto found; |
|
2053 |
} |
|
2054 |
} else if (retried) { |
|
2055 |
rw_exit(&ddv->sdev_contents); |
|
2056 |
sdcmn_err3(("retry of lookup of %s/%s: failed\n", |
|
2057 |
ddv->sdev_name, nm)); |
|
2058 |
if (dv) |
|
2059 |
SDEV_RELE(dv); |
|
2060 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
2061 |
sdev_lookup_failed(ddv, nm, failed_flags); |
|
2062 |
*vpp = NULLVP; |
|
2063 |
return (ENOENT); |
|
2064 |
} |
|
2065 |
} |
|
2066 |
||
8023
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2067 |
lookup_create_node: |
2621 | 2068 |
/* first thread that is doing the lookup on this node */ |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2069 |
if (callback) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2070 |
ASSERT(dv == NULL); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2071 |
if (!rw_tryupgrade(&ddv->sdev_contents)) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2072 |
rw_exit(&ddv->sdev_contents); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2073 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2074 |
} |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2075 |
error = sdev_call_dircallback(ddv, &dv, nm, callback, |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2076 |
flags, cred); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2077 |
rw_downgrade(&ddv->sdev_contents); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2078 |
if (error == 0) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2079 |
goto found; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2080 |
} else { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2081 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2082 |
rw_exit(&ddv->sdev_contents); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2083 |
goto lookup_failed; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2084 |
} |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2085 |
} |
2621 | 2086 |
if (!dv) { |
2087 |
if (!rw_tryupgrade(&ddv->sdev_contents)) { |
|
2088 |
rw_exit(&ddv->sdev_contents); |
|
2089 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
|
2090 |
} |
|
2091 |
error = sdev_mknode(ddv, nm, &dv, NULL, NULL, NULL, |
|
2092 |
cred, SDEV_INIT); |
|
2093 |
if (!dv) { |
|
2094 |
rw_exit(&ddv->sdev_contents); |
|
2095 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
2096 |
sdev_lookup_failed(ddv, nm, failed_flags); |
|
2097 |
*vpp = NULLVP; |
|
2098 |
return (ENOENT); |
|
2099 |
} |
|
2100 |
rw_downgrade(&ddv->sdev_contents); |
|
2101 |
} |
|
2102 |
||
2103 |
/* |
|
2104 |
* (b1) invoking devfsadm once per life time for devfsadm nodes |
|
2105 |
*/ |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2106 |
ASSERT(SDEV_HELD(dv)); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2107 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2108 |
if (SDEV_IS_NO_NCACHE(dv)) |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2109 |
failed_flags |= SLF_NO_NCACHE; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2110 |
if (sdev_reconfig_boot || !i_ddi_io_initialized() || |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2111 |
SDEV_IS_DYNAMIC(ddv) || SDEV_IS_NO_NCACHE(dv) || |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2112 |
((moddebug & MODDEBUG_FINI_EBUSY) != 0)) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2113 |
ASSERT(SDEV_HELD(dv)); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2114 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2115 |
goto nolock_notfound; |
2621 | 2116 |
} |
2117 |
||
2118 |
/* |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2119 |
* filter out known non-existent devices recorded |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2120 |
* during initial reconfiguration boot for which |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2121 |
* reconfig should not be done and lookup may |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2122 |
* be short-circuited now. |
2621 | 2123 |
*/ |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2124 |
if (sdev_lookup_filter(ddv, nm)) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2125 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2126 |
goto nolock_notfound; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2127 |
} |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2128 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2129 |
/* bypassing devfsadm internal nodes */ |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2130 |
if (is_devfsadm_thread(lookup_thread)) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2131 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2132 |
goto nolock_notfound; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2133 |
} |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2134 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2135 |
if (sdev_reconfig_disable) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2136 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2137 |
goto nolock_notfound; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2138 |
} |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2139 |
|
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2140 |
error = sdev_call_devfsadmd(ddv, dv, nm); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2141 |
if (error == 0) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2142 |
sdcmn_err8(("lookup of %s/%s by %s: reconfig\n", |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2143 |
ddv->sdev_name, nm, curproc->p_user.u_comm)); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2144 |
if (sdev_reconfig_verbose) { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2145 |
cmn_err(CE_CONT, |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2146 |
"?lookup of %s/%s by %s: reconfig\n", |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2147 |
ddv->sdev_name, nm, curproc->p_user.u_comm); |
2621 | 2148 |
} |
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2149 |
retried = 1; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2150 |
failed_flags |= SLF_REBUILT; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2151 |
ASSERT(dv->sdev_state != SDEV_ZOMBIE); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2152 |
SDEV_SIMPLE_RELE(dv); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2153 |
goto tryagain; |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2154 |
} else { |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2155 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2156 |
goto nolock_notfound; |
2621 | 2157 |
} |
2158 |
||
2159 |
found: |
|
2160 |
ASSERT(!(dv->sdev_flags & SDEV_STALE)); |
|
2161 |
ASSERT(dv->sdev_state == SDEV_READY); |
|
2162 |
if (vtor) { |
|
2163 |
/* |
|
2164 |
* Check validity of returned node |
|
2165 |
*/ |
|
2166 |
switch (vtor(dv)) { |
|
2167 |
case SDEV_VTOR_VALID: |
|
2168 |
break; |
|
8023
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2169 |
case SDEV_VTOR_STALE: |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2170 |
/* |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2171 |
* The name exists, but the cache entry is |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2172 |
* stale and needs to be re-created. |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2173 |
*/ |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2174 |
ASSERT(RW_READ_HELD(&ddv->sdev_contents)); |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2175 |
if (rw_tryupgrade(&ddv->sdev_contents) == 0) { |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2176 |
rw_exit(&ddv->sdev_contents); |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2177 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2178 |
} |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2179 |
error = sdev_cache_update(ddv, &dv, nm, |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2180 |
SDEV_CACHE_DELETE); |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2181 |
rw_downgrade(&ddv->sdev_contents); |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2182 |
if (error == 0) { |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2183 |
dv = NULL; |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2184 |
goto lookup_create_node; |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2185 |
} |
faf256d5c16c
PSARC/2006/475 Clearview: IP Observability Devices
Philip Kirk <Phil.Kirk@Sun.COM>
parents:
7988
diff
changeset
|
2186 |
/* FALLTHRU */ |
2621 | 2187 |
case SDEV_VTOR_INVALID: |
2188 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
2189 |
sdcmn_err7(("lookup: destroy invalid " |
|
2190 |
"node: %s(%p)\n", dv->sdev_name, (void *)dv)); |
|
2191 |
goto nolock_notfound; |
|
2192 |
case SDEV_VTOR_SKIP: |
|
2193 |
sdcmn_err7(("lookup: node not applicable - " |
|
2194 |
"skipping: %s(%p)\n", dv->sdev_name, (void *)dv)); |
|
2195 |
rw_exit(&ddv->sdev_contents); |
|
2196 |
SD_TRACE_FAILED_LOOKUP(ddv, nm, retried); |
|
2197 |
SDEV_RELE(dv); |
|
2198 |
goto lookup_failed; |
|
2199 |
default: |
|
2200 |
cmn_err(CE_PANIC, |
|
2201 |
"dev fs: validator failed: %s(%p)\n", |
|
2202 |
dv->sdev_name, (void *)dv); |
|
2203 |
break; |
|
2204 |
} |
|
2205 |
} |
|
2206 |
||
2207 |
rw_exit(&ddv->sdev_contents); |
|
2208 |
rv = sdev_to_vp(dv, vpp); |
|
2209 |
sdcmn_err3(("devname_lookup_func: returning vp %p v_count %d state %d " |
|
2210 |
"for nm %s, error %d\n", (void *)*vpp, (*vpp)->v_count, |
|
2211 |
dv->sdev_state, nm, rv)); |
|
2212 |
return (rv); |
|
2213 |
||
2214 |
nolock_notfound: |
|
2215 |
/* |
|
2216 |
* Destroy the node that is created for synchronization purposes. |
|
2217 |
*/ |
|
2218 |
sdcmn_err3(("devname_lookup_func: %s with state %d\n", |
|
2219 |
nm, dv->sdev_state)); |
|
2220 |
ASSERT(RW_READ_HELD(&ddv->sdev_contents)); |
|
2221 |
if (dv->sdev_state == SDEV_INIT) { |
|
2222 |
if (!rw_tryupgrade(&ddv->sdev_contents)) { |
|
2223 |
rw_exit(&ddv->sdev_contents); |
|
2224 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
|
2225 |
} |
|
2226 |
||
2227 |
/* |
|
2228 |
* Node state may have changed during the lock |
|
2229 |
* changes. Re-check. |
|
2230 |
*/ |
|
2231 |
if (dv->sdev_state == SDEV_INIT) { |
|
2232 |
(void) sdev_dirdelete(ddv, dv); |
|
2233 |
rw_exit(&ddv->sdev_contents); |
|
2234 |
sdev_lookup_failed(ddv, nm, failed_flags); |
|
2235 |
*vpp = NULL; |
|
2236 |
return (ENOENT); |
|
2237 |
} |
|
2238 |
} |
|
2239 |
||
2240 |
rw_exit(&ddv->sdev_contents); |
|
2241 |
SDEV_RELE(dv); |
|
2242 |
||
2243 |
lookup_failed: |
|
2244 |
sdev_lookup_failed(ddv, nm, failed_flags); |
|
2245 |
*vpp = NULL; |
|
2246 |
return (ENOENT); |
|
2247 |
} |
|
2248 |
||
2249 |
/* |
|
2250 |
* Given a directory node, mark all nodes beneath as |
|
2251 |
* STALE, i.e. nodes that don't exist as far as new |
|
6347
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
2252 |
* consumers are concerned. Remove them from the |
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
2253 |
* list of directory entries so that no lookup or |
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
2254 |
* directory traversal will find them. The node |
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
2255 |
* not deallocated so existing holds are not affected. |
2621 | 2256 |
*/ |
2257 |
void |
|
2258 |
sdev_stale(struct sdev_node *ddv) |
|
2259 |
{ |
|
2260 |
struct sdev_node *dv; |
|
2261 |
struct vnode *vp; |
|
2262 |
||
2263 |
ASSERT(SDEVTOV(ddv)->v_type == VDIR); |
|
2264 |
||
2265 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
2266 |
for (dv = SDEV_FIRST_ENTRY(ddv); dv; dv = SDEV_NEXT_ENTRY(ddv, dv)) { |
2621 | 2267 |
vp = SDEVTOV(dv); |
2268 |
if (vp->v_type == VDIR) |
|
2269 |
sdev_stale(dv); |
|
2270 |
||
2271 |
sdcmn_err9(("sdev_stale: setting stale %s\n", |
|
6347
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
2272 |
dv->sdev_path)); |
2621 | 2273 |
dv->sdev_flags |= SDEV_STALE; |
6347
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
2274 |
avl_remove(&ddv->sdev_entries, dv); |
2621 | 2275 |
} |
2276 |
ddv->sdev_flags |= SDEV_BUILD; |
|
2277 |
rw_exit(&ddv->sdev_contents); |
|
2278 |
} |
|
2279 |
||
2280 |
/* |
|
2281 |
* Given a directory node, clean out all the nodes beneath. |
|
2282 |
* If expr is specified, clean node with names matching expr. |
|
2283 |
* If SDEV_ENFORCE is specified in flags, busy nodes are made stale, |
|
2284 |
* so they are excluded from future lookups. |
|
2285 |
*/ |
|
2286 |
int |
|
2287 |
sdev_cleandir(struct sdev_node *ddv, char *expr, uint_t flags) |
|
2288 |
{ |
|
2289 |
int error = 0; |
|
2290 |
int busy = 0; |
|
2291 |
struct vnode *vp; |
|
2292 |
struct sdev_node *dv, *next = NULL; |
|
2293 |
int bkstore = 0; |
|
2294 |
int len = 0; |
|
2295 |
char *bks_name = NULL; |
|
2296 |
||
2297 |
ASSERT(SDEVTOV(ddv)->v_type == VDIR); |
|
2298 |
||
2299 |
/* |
|
2300 |
* We try our best to destroy all unused sdev_node's |
|
2301 |
*/ |
|
2302 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
2303 |
for (dv = SDEV_FIRST_ENTRY(ddv); dv; dv = next) { |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
2304 |
next = SDEV_NEXT_ENTRY(ddv, dv); |
2621 | 2305 |
vp = SDEVTOV(dv); |
2306 |
||
2307 |
if (expr && gmatch(dv->sdev_name, expr) == 0) |
|
2308 |
continue; |
|
2309 |
||
2310 |
if (vp->v_type == VDIR && |
|
2311 |
sdev_cleandir(dv, NULL, flags) != 0) { |
|
2312 |
sdcmn_err9(("sdev_cleandir: dir %s busy\n", |
|
2313 |
dv->sdev_name)); |
|
2314 |
busy++; |
|
2315 |
continue; |
|
2316 |
} |
|
2317 |
||
2318 |
if (vp->v_count > 0 && (flags & SDEV_ENFORCE) == 0) { |
|
2319 |
sdcmn_err9(("sdev_cleandir: dir %s busy\n", |
|
2320 |
dv->sdev_name)); |
|
2321 |
busy++; |
|
2322 |
continue; |
|
2323 |
} |
|
2324 |
||
2325 |
/* |
|
2326 |
* at this point, either dv is not held or SDEV_ENFORCE |
|
2327 |
* is specified. In either case, dv needs to be deleted |
|
2328 |
*/ |
|
2329 |
SDEV_HOLD(dv); |
|
2330 |
||
2331 |
bkstore = SDEV_IS_PERSIST(dv) ? 1 : 0; |
|
2332 |
if (bkstore && (vp->v_type == VDIR)) |
|
2333 |
bkstore += 1; |
|
2334 |
||
2335 |
if (bkstore) { |
|
2336 |
len = strlen(dv->sdev_name) + 1; |
|
2337 |
bks_name = kmem_alloc(len, KM_SLEEP); |
|
2338 |
bcopy(dv->sdev_name, bks_name, len); |
|
2339 |
} |
|
2340 |
||
2341 |
error = sdev_dirdelete(ddv, dv); |
|
2342 |
||
2343 |
if (error == EBUSY) { |
|
2344 |
sdcmn_err9(("sdev_cleandir: dir busy\n")); |
|
2345 |
busy++; |
|
2346 |
} |
|
2347 |
||
2348 |
/* take care the backing store clean up */ |
|
2349 |
if (bkstore && (error == 0)) { |
|
2350 |
ASSERT(bks_name); |
|
2351 |
ASSERT(ddv->sdev_attrvp); |
|
2352 |
||
2353 |
if (bkstore == 1) { |
|
2354 |
error = VOP_REMOVE(ddv->sdev_attrvp, |
|
5331 | 2355 |
bks_name, kcred, NULL, 0); |
2621 | 2356 |
} else if (bkstore == 2) { |
2357 |
error = VOP_RMDIR(ddv->sdev_attrvp, |
|
5331 | 2358 |
bks_name, ddv->sdev_attrvp, kcred, NULL, 0); |
2621 | 2359 |
} |
2360 |
||
2361 |
/* do not propagate the backing store errors */ |
|
2362 |
if (error) { |
|
2363 |
sdcmn_err9(("sdev_cleandir: backing store" |
|
2364 |
"not cleaned\n")); |
|
2365 |
error = 0; |
|
2366 |
} |
|
2367 |
||
2368 |
bkstore = 0; |
|
2369 |
kmem_free(bks_name, len); |
|
2370 |
bks_name = NULL; |
|
2371 |
len = 0; |
|
2372 |
} |
|
2373 |
} |
|
2374 |
||
2375 |
ddv->sdev_flags |= SDEV_BUILD; |
|
2376 |
rw_exit(&ddv->sdev_contents); |
|
2377 |
||
2378 |
if (busy) { |
|
2379 |
error = EBUSY; |
|
2380 |
} |
|
2381 |
||
2382 |
return (error); |
|
2383 |
} |
|
2384 |
||
2385 |
/* |
|
2386 |
* a convenient wrapper for readdir() funcs |
|
2387 |
*/ |
|
2388 |
size_t |
|
2389 |
add_dir_entry(dirent64_t *de, char *nm, size_t size, ino_t ino, offset_t off) |
|
2390 |
{ |
|
2391 |
size_t reclen = DIRENT64_RECLEN(strlen(nm)); |
|
2392 |
if (reclen > size) |
|
2393 |
return (0); |
|
2394 |
||
2395 |
de->d_ino = (ino64_t)ino; |
|
2396 |
de->d_off = (off64_t)off + 1; |
|
2397 |
de->d_reclen = (ushort_t)reclen; |
|
2398 |
(void) strncpy(de->d_name, nm, DIRENT64_NAMELEN(reclen)); |
|
2399 |
return (reclen); |
|
2400 |
} |
|
2401 |
||
2402 |
/* |
|
2403 |
* sdev_mount service routines |
|
2404 |
*/ |
|
2405 |
int |
|
2406 |
sdev_copyin_mountargs(struct mounta *uap, struct sdev_mountargs *args) |
|
2407 |
{ |
|
2408 |
int error; |
|
2409 |
||
2410 |
if (uap->datalen != sizeof (*args)) |
|
2411 |
return (EINVAL); |
|
2412 |
||
2413 |
if (error = copyin(uap->dataptr, args, sizeof (*args))) { |
|
2414 |
cmn_err(CE_WARN, "sdev_copyin_mountargs: can not" |
|
2415 |
"get user data. error %d\n", error); |
|
2416 |
return (EFAULT); |
|
2417 |
} |
|
2418 |
||
2419 |
return (0); |
|
2420 |
} |
|
2421 |
||
2422 |
#ifdef nextdp |
|
2423 |
#undef nextdp |
|
2424 |
#endif |
|
3133 | 2425 |
#define nextdp(dp) ((struct dirent64 *) \ |
2426 |
(intptr_t)((char *)(dp) + (dp)->d_reclen)) |
|
2621 | 2427 |
|
2428 |
/* |
|
2429 |
* readdir helper func |
|
2430 |
*/ |
|
2431 |
int |
|
2432 |
devname_readdir_func(vnode_t *vp, uio_t *uiop, cred_t *cred, int *eofp, |
|
2433 |
int flags) |
|
2434 |
{ |
|
2435 |
struct sdev_node *ddv = VTOSDEV(vp); |
|
2436 |
struct sdev_node *dv; |
|
2437 |
dirent64_t *dp; |
|
2438 |
ulong_t outcount = 0; |
|
2439 |
size_t namelen; |
|
2440 |
ulong_t alloc_count; |
|
2441 |
void *outbuf; |
|
2442 |
struct iovec *iovp; |
|
2443 |
int error = 0; |
|
2444 |
size_t reclen; |
|
2445 |
offset_t diroff; |
|
2446 |
offset_t soff; |
|
2447 |
int this_reclen; |
|
2448 |
int (*vtor)(struct sdev_node *) = NULL; |
|
2449 |
struct vattr attr; |
|
2450 |
timestruc_t now; |
|
2451 |
||
2452 |
ASSERT(ddv->sdev_attr || ddv->sdev_attrvp); |
|
2453 |
ASSERT(RW_READ_HELD(&ddv->sdev_contents)); |
|
2454 |
||
2455 |
if (uiop->uio_loffset >= MAXOFF_T) { |
|
2456 |
if (eofp) |
|
2457 |
*eofp = 1; |
|
2458 |
return (0); |
|
2459 |
} |
|
2460 |
||
2461 |
if (uiop->uio_iovcnt != 1) |
|
2462 |
return (EINVAL); |
|
2463 |
||
2464 |
if (vp->v_type != VDIR) |
|
2465 |
return (ENOTDIR); |
|
2466 |
||
2467 |
if (ddv->sdev_flags & SDEV_VTOR) { |
|
2468 |
vtor = (int (*)(struct sdev_node *))sdev_get_vtor(ddv); |
|
2469 |
ASSERT(vtor); |
|
2470 |
} |
|
2471 |
||
2472 |
if (eofp != NULL) |
|
2473 |
*eofp = 0; |
|
2474 |
||
3133 | 2475 |
soff = uiop->uio_loffset; |
2621 | 2476 |
iovp = uiop->uio_iov; |
2477 |
alloc_count = iovp->iov_len; |
|
2478 |
dp = outbuf = kmem_alloc(alloc_count, KM_SLEEP); |
|
2479 |
outcount = 0; |
|
2480 |
||
2481 |
if (ddv->sdev_state == SDEV_ZOMBIE) |
|
2482 |
goto get_cache; |
|
2483 |
||
2679
39fc2aead8db
6464694 assert failure during "ls $ZONEROOT/dev/pts"
szhou
parents:
2621
diff
changeset
|
2484 |
if (SDEV_IS_GLOBAL(ddv)) { |
10097
e33d224110c9
6851199 unused /dev nameservices code can be removed
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
8023
diff
changeset
|
2485 |
|
e33d224110c9
6851199 unused /dev nameservices code can be removed
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
8023
diff
changeset
|
2486 |
if ((sdev_boot_state == SDEV_BOOT_STATE_COMPLETE) && |
2621 | 2487 |
!sdev_reconfig_boot && (flags & SDEV_BROWSE) && |
2488 |
!SDEV_IS_DYNAMIC(ddv) && !SDEV_IS_NO_NCACHE(ddv) && |
|
2489 |
((moddebug & MODDEBUG_FINI_EBUSY) == 0) && |
|
2490 |
!DEVNAME_DEVFSADM_HAS_RUN(devfsadm_state) && |
|
2491 |
!DEVNAME_DEVFSADM_IS_RUNNING(devfsadm_state) && |
|
2492 |
!sdev_reconfig_disable) { |
|
2493 |
/* |
|
2494 |
* invoking "devfsadm" to do system device reconfig |
|
2495 |
*/ |
|
2496 |
mutex_enter(&ddv->sdev_lookup_lock); |
|
2497 |
SDEV_BLOCK_OTHERS(ddv, |
|
2498 |
(SDEV_READDIR|SDEV_LGWAITING)); |
|
2499 |
mutex_exit(&ddv->sdev_lookup_lock); |
|
2500 |
||
2501 |
sdcmn_err8(("readdir of %s by %s: reconfig\n", |
|
2502 |
ddv->sdev_path, curproc->p_user.u_comm)); |
|
2503 |
if (sdev_reconfig_verbose) { |
|
2504 |
cmn_err(CE_CONT, |
|
2505 |
"?readdir of %s by %s: reconfig\n", |
|
2506 |
ddv->sdev_path, curproc->p_user.u_comm); |
|
2507 |
} |
|
2508 |
||
2509 |
sdev_devfsadmd_thread(ddv, NULL, kcred); |
|
2510 |
} else if (DEVNAME_DEVFSADM_IS_RUNNING(devfsadm_state)) { |
|
2511 |
/* |
|
2512 |
* compensate the "ls" started later than "devfsadm" |
|
2513 |
*/ |
|
2514 |
mutex_enter(&ddv->sdev_lookup_lock); |
|
2515 |
SDEV_BLOCK_OTHERS(ddv, (SDEV_READDIR|SDEV_LGWAITING)); |
|
2516 |
mutex_exit(&ddv->sdev_lookup_lock); |
|
2517 |
} |
|
2518 |
||
2519 |
/* |
|
2520 |
* release the contents lock so that |
|
3843
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
2521 |
* the cache may be updated by devfsadmd |
2621 | 2522 |
*/ |
2523 |
rw_exit(&ddv->sdev_contents); |
|
2524 |
mutex_enter(&ddv->sdev_lookup_lock); |
|
2525 |
if (SDEV_IS_READDIR(ddv)) |
|
2526 |
(void) sdev_wait4lookup(ddv, SDEV_READDIR); |
|
2527 |
mutex_exit(&ddv->sdev_lookup_lock); |
|
2528 |
rw_enter(&ddv->sdev_contents, RW_READER); |
|
2529 |
||
2530 |
sdcmn_err4(("readdir of directory %s by %s\n", |
|
2531 |
ddv->sdev_name, curproc->p_user.u_comm)); |
|
3843
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
2532 |
if (ddv->sdev_flags & SDEV_BUILD) { |
2621 | 2533 |
if (SDEV_IS_PERSIST(ddv)) { |
2534 |
error = sdev_filldir_from_store(ddv, |
|
2535 |
alloc_count, cred); |
|
2536 |
} |
|
3843
6501a40c8d2a
6502778 devnames has some problems with node creation and deletion
jg
parents:
3133
diff
changeset
|
2537 |
ddv->sdev_flags &= ~SDEV_BUILD; |
2621 | 2538 |
} |
2539 |
} |
|
2540 |
||
2541 |
get_cache: |
|
2542 |
/* handle "." and ".." */ |
|
2543 |
diroff = 0; |
|
2544 |
if (soff == 0) { |
|
2545 |
/* first time */ |
|
2546 |
this_reclen = DIRENT64_RECLEN(1); |
|
2547 |
if (alloc_count < this_reclen) { |
|
2548 |
error = EINVAL; |
|
2549 |
goto done; |
|
2550 |
} |
|
2551 |
||
2552 |
dp->d_ino = (ino64_t)ddv->sdev_ino; |
|
2553 |
dp->d_off = (off64_t)1; |
|
2554 |
dp->d_reclen = (ushort_t)this_reclen; |
|
2555 |
||
2556 |
(void) strncpy(dp->d_name, ".", |
|
2557 |
DIRENT64_NAMELEN(this_reclen)); |
|
2558 |
outcount += dp->d_reclen; |
|
2559 |
dp = nextdp(dp); |
|
2560 |
} |
|
2561 |
||
2562 |
diroff++; |
|
2563 |
if (soff <= 1) { |
|
2564 |
this_reclen = DIRENT64_RECLEN(2); |
|
2565 |
if (alloc_count < outcount + this_reclen) { |
|
2566 |
error = EINVAL; |
|
2567 |
goto done; |
|
2568 |
} |
|
2569 |
||
2570 |
dp->d_reclen = (ushort_t)this_reclen; |
|
2571 |
dp->d_ino = (ino64_t)ddv->sdev_dotdot->sdev_ino; |
|
2572 |
dp->d_off = (off64_t)2; |
|
2573 |
||
2574 |
(void) strncpy(dp->d_name, "..", |
|
2575 |
DIRENT64_NAMELEN(this_reclen)); |
|
2576 |
outcount += dp->d_reclen; |
|
2577 |
||
2578 |
dp = nextdp(dp); |
|
2579 |
} |
|
2580 |
||
2581 |
||
2582 |
/* gets the cache */ |
|
2583 |
diroff++; |
|
6260
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
2584 |
for (dv = SDEV_FIRST_ENTRY(ddv); dv; |
0ca1934af628
6503650 dv_findbyname doesn't scale well in the presence of an extremely large number of devices
jg
parents:
6065
diff
changeset
|
2585 |
dv = SDEV_NEXT_ENTRY(ddv, dv), diroff++) { |
2621 | 2586 |
sdcmn_err3(("sdev_readdir: diroff %lld soff %lld for '%s' \n", |
2587 |
diroff, soff, dv->sdev_name)); |
|
2588 |
||
2589 |
/* bypassing pre-matured nodes */ |
|
2590 |
if (diroff < soff || (dv->sdev_state != SDEV_READY)) { |
|
2591 |
sdcmn_err3(("sdev_readdir: pre-mature node " |
|
10588
dc03f981ea18
6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
10097
diff
changeset
|
2592 |
"%s %d\n", dv->sdev_name, dv->sdev_state)); |
2621 | 2593 |
continue; |
2594 |
} |
|
2595 |
||
2596 |
/* |
|
2597 |
* Check validity of node |
|
12717
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2598 |
* Drop invalid and nodes to be skipped. |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2599 |
* A node the validator indicates as stale needs |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2600 |
* to be returned as presumably the node name itself |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2601 |
* is valid and the node data itself will be refreshed |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2602 |
* on lookup. An application performing a readdir then |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2603 |
* stat on each entry should thus always see consistent |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2604 |
* data. In any case, it is not possible to synchronize |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2605 |
* with dynamic kernel state, and any view we return can |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2606 |
* never be anything more than a snapshot at a point in time. |
2621 | 2607 |
*/ |
2608 |
if (vtor) { |
|
2609 |
switch (vtor(dv)) { |
|
2610 |
case SDEV_VTOR_VALID: |
|
2611 |
break; |
|
2612 |
case SDEV_VTOR_INVALID: |
|
2613 |
case SDEV_VTOR_SKIP: |
|
2614 |
continue; |
|
12717
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2615 |
case SDEV_VTOR_STALE: |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2616 |
sdcmn_err3(("sdev_readir: %s stale\n", |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2617 |
dv->sdev_name)); |
1cb0b42b763e
6961039 /dev/vt: race in symlink updates can result in kernel heap corruption
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
12633
diff
changeset
|
2618 |
break; |
2621 | 2619 |
default: |
2620 |
cmn_err(CE_PANIC, |
|
2621 |
"dev fs: validator failed: %s(%p)\n", |
|
2622 |
dv->sdev_name, (void *)dv); |
|
2623 |
break; |
|
2624 |
/*NOTREACHED*/ |
|
2625 |
} |
|
2626 |
} |
|
2627 |
||
2628 |
namelen = strlen(dv->sdev_name); |
|
2629 |
reclen = DIRENT64_RECLEN(namelen); |
|
2630 |
if (outcount + reclen > alloc_count) { |
|
2631 |
goto full; |
|
2632 |
} |
|
2633 |
dp->d_reclen = (ushort_t)reclen; |
|
2634 |
dp->d_ino = (ino64_t)dv->sdev_ino; |
|
2635 |
dp->d_off = (off64_t)diroff + 1; |
|
2636 |
(void) strncpy(dp->d_name, dv->sdev_name, |
|
2637 |
DIRENT64_NAMELEN(reclen)); |
|
2638 |
outcount += reclen; |
|
2639 |
dp = nextdp(dp); |
|
2640 |
} |
|
2641 |
||
2642 |
full: |
|
2643 |
sdcmn_err4(("sdev_readdir: moving %lu bytes: " |
|
2644 |
"diroff %lld, soff %lld, dv %p\n", outcount, diroff, soff, |
|
2645 |
(void *)dv)); |
|
2646 |
||
2647 |
if (outcount) |
|
2648 |
error = uiomove(outbuf, outcount, UIO_READ, uiop); |
|
2649 |
||
2650 |
if (!error) { |
|
3133 | 2651 |
uiop->uio_loffset = diroff; |
2621 | 2652 |
if (eofp) |
2653 |
*eofp = dv ? 0 : 1; |
|
2654 |
} |
|
2655 |
||
2656 |
||
2657 |
if (ddv->sdev_attrvp) { |
|
2658 |
gethrestime(&now); |
|
2659 |
attr.va_ctime = now; |
|
2660 |
attr.va_atime = now; |
|
2661 |
attr.va_mask = AT_CTIME|AT_ATIME; |
|
2662 |
||
2663 |
(void) VOP_SETATTR(ddv->sdev_attrvp, &attr, 0, kcred, NULL); |
|
2664 |
} |
|
2665 |
done: |
|
2666 |
kmem_free(outbuf, alloc_count); |
|
2667 |
return (error); |
|
2668 |
} |
|
2669 |
||
2670 |
static int |
|
2671 |
sdev_modctl_lookup(const char *path, vnode_t **r_vp) |
|
2672 |
{ |
|
2673 |
vnode_t *vp; |
|
2674 |
vnode_t *cvp; |
|
2675 |
struct sdev_node *svp; |
|
2676 |
char *nm; |
|
2677 |
struct pathname pn; |
|
2678 |
int error; |
|
2679 |
int persisted = 0; |
|
2680 |
||
7988
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2681 |
ASSERT(INGLOBALZONE(curproc)); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2682 |
|
2621 | 2683 |
if (error = pn_get((char *)path, UIO_SYSSPACE, &pn)) |
2684 |
return (error); |
|
2685 |
nm = kmem_alloc(MAXNAMELEN, KM_SLEEP); |
|
2686 |
||
2687 |
vp = rootdir; |
|
2688 |
VN_HOLD(vp); |
|
2689 |
||
2690 |
while (pn_pathleft(&pn)) { |
|
7988
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2691 |
ASSERT(vp->v_type == VDIR || vp->v_type == VLNK); |
2621 | 2692 |
(void) pn_getcomponent(&pn, nm); |
7988
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2693 |
|
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2694 |
/* |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2695 |
* Deal with the .. special case where we may be |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2696 |
* traversing up across a mount point, to the |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2697 |
* root of this filesystem or global root. |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2698 |
*/ |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2699 |
if (nm[0] == '.' && nm[1] == '.' && nm[2] == 0) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2700 |
checkforroot: |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2701 |
if (VN_CMP(vp, rootdir)) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2702 |
nm[1] = 0; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2703 |
} else if (vp->v_flag & VROOT) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2704 |
vfs_t *vfsp; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2705 |
cvp = vp; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2706 |
vfsp = cvp->v_vfsp; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2707 |
vfs_rlock_wait(vfsp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2708 |
vp = cvp->v_vfsp->vfs_vnodecovered; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2709 |
if (vp == NULL || |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2710 |
(cvp->v_vfsp->vfs_flag & VFS_UNMOUNTED)) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2711 |
vfs_unlock(vfsp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2712 |
VN_RELE(cvp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2713 |
error = EIO; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2714 |
break; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2715 |
} |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2716 |
VN_HOLD(vp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2717 |
vfs_unlock(vfsp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2718 |
VN_RELE(cvp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2719 |
cvp = NULL; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2720 |
goto checkforroot; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2721 |
} |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2722 |
} |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2723 |
|
5331 | 2724 |
error = VOP_LOOKUP(vp, nm, &cvp, NULL, 0, NULL, kcred, NULL, |
2725 |
NULL, NULL); |
|
7988
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2726 |
if (error) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2727 |
VN_RELE(vp); |
2621 | 2728 |
break; |
7988
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2729 |
} |
2621 | 2730 |
|
2731 |
/* traverse mount points encountered on our journey */ |
|
2732 |
if (vn_ismntpt(cvp) && (error = traverse(&cvp)) != 0) { |
|
7988
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2733 |
VN_RELE(vp); |
2621 | 2734 |
VN_RELE(cvp); |
2735 |
break; |
|
2736 |
} |
|
2737 |
||
2738 |
/* |
|
7988
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2739 |
* symbolic link, can be either relative and absolute |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2740 |
*/ |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2741 |
if ((cvp->v_type == VLNK) && pn_pathleft(&pn)) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2742 |
struct pathname linkpath; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2743 |
pn_alloc(&linkpath); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2744 |
if (error = pn_getsymlink(cvp, &linkpath, kcred)) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2745 |
pn_free(&linkpath); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2746 |
break; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2747 |
} |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2748 |
if (pn_pathleft(&linkpath) == 0) |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2749 |
(void) pn_set(&linkpath, "."); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2750 |
error = pn_insert(&pn, &linkpath, strlen(nm)); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2751 |
pn_free(&linkpath); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2752 |
if (pn.pn_pathlen == 0) { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2753 |
VN_RELE(vp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2754 |
return (ENOENT); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2755 |
} |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2756 |
if (pn.pn_path[0] == '/') { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2757 |
pn_skipslash(&pn); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2758 |
VN_RELE(vp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2759 |
VN_RELE(cvp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2760 |
vp = rootdir; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2761 |
VN_HOLD(vp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2762 |
} else { |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2763 |
VN_RELE(cvp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2764 |
} |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2765 |
continue; |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2766 |
} |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2767 |
|
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2768 |
VN_RELE(vp); |
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2769 |
|
b4f90df3107b
6751491 devfsadm check causes panic on clustered systems
Jerry Gilliam <Jerry.Gilliam@Sun.COM>
parents:
7688
diff
changeset
|
2770 |
/* |
2621 | 2771 |
* Direct the operation to the persisting filesystem |
2772 |
* underlying /dev. Bail if we encounter a |
|
2773 |
* non-persistent dev entity here. |
|
2774 |
*/ |
|
2775 |
if (cvp->v_vfsp->vfs_fstype == devtype) { |
|
2776 |
||
2777 |
if ((VTOSDEV(cvp)->sdev_flags & SDEV_PERSIST) == 0) { |
|
2778 |
error = ENOENT; |
|
2779 |
VN_RELE(cvp); |
|
2780 |
break; |
|
2781 |
} |
|
2782 |
||
2783 |
if (VTOSDEV(cvp) == NULL) { |
|
2784 |
error = ENOENT; |
|
2785 |
VN_RELE(cvp); |
|
2786 |
break; |
|
2787 |
} |
|
2788 |
svp = VTOSDEV(cvp); |
|
2789 |
if ((vp = svp->sdev_attrvp) == NULL) { |
|
2790 |
error = ENOENT; |
|
2791 |
VN_RELE(cvp); |
|
2792 |
break; |
|
2793 |
} |
|
2794 |
persisted = 1; |
|
2795 |
VN_HOLD(vp); |
|
2796 |
VN_RELE(cvp); |
|
2797 |
cvp = vp; |
|
2798 |
} |
|
2799 |
||
2800 |
vp = cvp; |
|
2801 |
pn_skipslash(&pn); |
|
2802 |
} |
|
2803 |
||
2804 |
kmem_free(nm, MAXNAMELEN); |
|
2805 |
pn_free(&pn); |
|
2806 |
||
2807 |
if (error) |
|
2808 |
return (error); |
|
2809 |
||
2810 |
/* |
|
2811 |
* Only return persisted nodes in the filesystem underlying /dev. |
|
2812 |
*/ |
|
2813 |
if (!persisted) { |
|
2814 |
VN_RELE(vp); |
|
2815 |
return (ENOENT); |
|
2816 |
} |
|
2817 |
||
2818 |
*r_vp = vp; |
|
2819 |
return (0); |
|
2820 |
} |
|
2821 |
||
2822 |
int |
|
2823 |
sdev_modctl_readdir(const char *dir, char ***dirlistp, |
|
6065 | 2824 |
int *npathsp, int *npathsp_alloc, int checking_empty) |
2621 | 2825 |
{ |
2826 |
char **pathlist = NULL; |
|
2827 |
char **newlist = NULL; |
|
2828 |
int npaths = 0; |
|
2829 |
int npaths_alloc = 0; |
|
2830 |
dirent64_t *dbuf = NULL; |
|
2831 |
int n; |
|
2832 |
char *s; |
|
2833 |
int error; |
|
2834 |
vnode_t *vp; |
|
2835 |
int eof; |
|
2836 |
struct iovec iov; |
|
2837 |
struct uio uio; |
|
2838 |
struct dirent64 *dp; |
|
2839 |
size_t dlen; |
|
2840 |
size_t dbuflen; |
|
2841 |
int ndirents = 64; |
|
2842 |
char *nm; |
|
2843 |
||
2844 |
error = sdev_modctl_lookup(dir, &vp); |
|
2845 |
sdcmn_err11(("modctl readdir: %s by %s: %s\n", |
|
2846 |
dir, curproc->p_user.u_comm, |
|
2847 |
(error == 0) ? "ok" : "failed")); |
|
2848 |
if (error) |
|
2849 |
return (error); |
|
2850 |
||
2851 |
dlen = ndirents * (sizeof (*dbuf)); |
|
2852 |
dbuf = kmem_alloc(dlen, KM_SLEEP); |
|
2853 |
||
2854 |
uio.uio_iov = &iov; |
|
2855 |
uio.uio_iovcnt = 1; |
|
2856 |
uio.uio_segflg = UIO_SYSSPACE; |
|
2857 |
uio.uio_fmode = 0; |
|
2858 |
uio.uio_extflg = UIO_COPY_CACHED; |
|
2859 |
uio.uio_loffset = 0; |
|
2860 |
uio.uio_llimit = MAXOFFSET_T; |
|
2861 |
||
2862 |
eof = 0; |
|
2863 |
error = 0; |
|
2864 |
while (!error && !eof) { |
|
2865 |
uio.uio_resid = dlen; |
|
2866 |
iov.iov_base = (char *)dbuf; |
|
2867 |
iov.iov_len = dlen; |
|
2868 |
||
2869 |
(void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, NULL); |
|
5331 | 2870 |
error = VOP_READDIR(vp, &uio, kcred, &eof, NULL, 0); |
2621 | 2871 |
VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL); |
2872 |
||
2873 |
dbuflen = dlen - uio.uio_resid; |
|
2874 |
||
2875 |
if (error || dbuflen == 0) |
|
2876 |
break; |
|
2877 |
||
2878 |
for (dp = dbuf; ((intptr_t)dp < (intptr_t)dbuf + dbuflen); |
|
6065 | 2879 |
dp = (dirent64_t *)((intptr_t)dp + dp->d_reclen)) { |
2621 | 2880 |
|
2881 |
nm = dp->d_name; |
|
2882 |
||
2883 |
if (strcmp(nm, ".") == 0 || strcmp(nm, "..") == 0) |
|
2884 |
continue; |
|
2885 |
if (npaths == npaths_alloc) { |
|
2886 |
npaths_alloc += 64; |
|
2887 |
newlist = (char **) |
|
2888 |
kmem_zalloc((npaths_alloc + 1) * |
|
6065 | 2889 |
sizeof (char *), KM_SLEEP); |
2621 | 2890 |
if (pathlist) { |
2891 |
bcopy(pathlist, newlist, |
|
2892 |
npaths * sizeof (char *)); |
|
2893 |
kmem_free(pathlist, |
|
2894 |
(npaths + 1) * sizeof (char *)); |
|
2895 |
} |
|
2896 |
pathlist = newlist; |
|
2897 |
} |
|
2898 |
n = strlen(nm) + 1; |
|
2899 |
s = kmem_alloc(n, KM_SLEEP); |
|
2900 |
bcopy(nm, s, n); |
|
2901 |
pathlist[npaths++] = s; |
|
2902 |
sdcmn_err11((" %s/%s\n", dir, s)); |
|
6065 | 2903 |
|
2904 |
/* if checking empty, one entry is as good as many */ |
|
2905 |
if (checking_empty) { |
|
2906 |
eof = 1; |
|
2907 |
break; |
|
2908 |
} |
|
2621 | 2909 |
} |
2910 |
} |
|
2911 |
||
2912 |
exit: |
|
2913 |
VN_RELE(vp); |
|
2914 |
||
2915 |
if (dbuf) |
|
2916 |
kmem_free(dbuf, dlen); |
|
2917 |
||
2918 |
if (error) |
|
2919 |
return (error); |
|
2920 |
||
2921 |
*dirlistp = pathlist; |
|
2922 |
*npathsp = npaths; |
|
2923 |
*npathsp_alloc = npaths_alloc; |
|
2924 |
||
2925 |
return (0); |
|
2926 |
} |
|
2927 |
||
2928 |
void |
|
2929 |
sdev_modctl_readdir_free(char **pathlist, int npaths, int npaths_alloc) |
|
2930 |
{ |
|
2931 |
int i, n; |
|
2932 |
||
2933 |
for (i = 0; i < npaths; i++) { |
|
2934 |
n = strlen(pathlist[i]) + 1; |
|
2935 |
kmem_free(pathlist[i], n); |
|
2936 |
} |
|
2937 |
||
2938 |
kmem_free(pathlist, (npaths_alloc + 1) * sizeof (char *)); |
|
2939 |
} |
|
2940 |
||
2941 |
int |
|
2942 |
sdev_modctl_devexists(const char *path) |
|
2943 |
{ |
|
2944 |
vnode_t *vp; |
|
2945 |
int error; |
|
2946 |
||
2947 |
error = sdev_modctl_lookup(path, &vp); |
|
2948 |
sdcmn_err11(("modctl dev exists: %s by %s: %s\n", |
|
2949 |
path, curproc->p_user.u_comm, |
|
2950 |
(error == 0) ? "ok" : "failed")); |
|
2951 |
if (error == 0) |
|
2952 |
VN_RELE(vp); |
|
2953 |
||
2954 |
return (error); |
|
2955 |
} |
|
2956 |
||
2957 |
extern int sdev_vnodeops_tbl_size; |
|
2958 |
||
2959 |
/* |
|
2960 |
* construct a new template with overrides from vtab |
|
2961 |
*/ |
|
2962 |
static fs_operation_def_t * |
|
2963 |
sdev_merge_vtab(const fs_operation_def_t tab[]) |
|
2964 |
{ |
|
2965 |
fs_operation_def_t *new; |
|
2966 |
const fs_operation_def_t *tab_entry; |
|
2967 |
||
2968 |
/* make a copy of standard vnode ops table */ |
|
2969 |
new = kmem_alloc(sdev_vnodeops_tbl_size, KM_SLEEP); |
|
2970 |
bcopy((void *)sdev_vnodeops_tbl, new, sdev_vnodeops_tbl_size); |
|
2971 |
||
2972 |
/* replace the overrides from tab */ |
|
2973 |
for (tab_entry = tab; tab_entry->name != NULL; tab_entry++) { |
|
2974 |
fs_operation_def_t *std_entry = new; |
|
2975 |
while (std_entry->name) { |
|
2976 |
if (strcmp(tab_entry->name, std_entry->name) == 0) { |
|
2977 |
std_entry->func = tab_entry->func; |
|
2978 |
break; |
|
2979 |
} |
|
2980 |
std_entry++; |
|
2981 |
} |
|
2982 |
if (std_entry->name == NULL) |
|
2983 |
cmn_err(CE_NOTE, "sdev_merge_vtab: entry %s unused.", |
|
2984 |
tab_entry->name); |
|
2985 |
} |
|
2986 |
||
2987 |
return (new); |
|
2988 |
} |
|
2989 |
||
2990 |
/* free memory allocated by sdev_merge_vtab */ |
|
2991 |
static void |
|
2992 |
sdev_free_vtab(fs_operation_def_t *new) |
|
2993 |
{ |
|
2994 |
kmem_free(new, sdev_vnodeops_tbl_size); |
|
2995 |
} |
|
2996 |
||
2997 |
/* |
|
2998 |
* a generic setattr() function |
|
2999 |
* |
|
3000 |
* note: flags only supports AT_UID and AT_GID. |
|
3001 |
* Future enhancements can be done for other types, e.g. AT_MODE |
|
3002 |
*/ |
|
3003 |
int |
|
3004 |
devname_setattr_func(struct vnode *vp, struct vattr *vap, int flags, |
|
3005 |
struct cred *cred, int (*callback)(struct sdev_node *, struct vattr *, |
|
3006 |
int), int protocol) |
|
3007 |
{ |
|
3008 |
struct sdev_node *dv = VTOSDEV(vp); |
|
3009 |
struct sdev_node *parent = dv->sdev_dotdot; |
|
3010 |
struct vattr *get; |
|
3011 |
uint_t mask = vap->va_mask; |
|
3012 |
int error; |
|
3013 |
||
3014 |
/* some sanity checks */ |
|
3015 |
if (vap->va_mask & AT_NOSET) |
|
3016 |
return (EINVAL); |
|
3017 |
||
3018 |
if (vap->va_mask & AT_SIZE) { |
|
3019 |
if (vp->v_type == VDIR) { |
|
3020 |
return (EISDIR); |
|
3021 |
} |
|
3022 |
} |
|
3023 |
||
3024 |
/* no need to set attribute, but do not fail either */ |
|
3025 |
ASSERT(parent); |
|
3026 |
rw_enter(&parent->sdev_contents, RW_READER); |
|
3027 |
if (dv->sdev_state == SDEV_ZOMBIE) { |
|
3028 |
rw_exit(&parent->sdev_contents); |
|
3029 |
return (0); |
|
3030 |
} |
|
3031 |
||
3032 |
/* If backing store exists, just set it. */ |
|
3033 |
if (dv->sdev_attrvp) { |
|
3034 |
rw_exit(&parent->sdev_contents); |
|
3035 |
return (VOP_SETATTR(dv->sdev_attrvp, vap, flags, cred, NULL)); |
|
3036 |
} |
|
3037 |
||
3038 |
/* |
|
3039 |
* Otherwise, for nodes with the persistence attribute, create it. |
|
3040 |
*/ |
|
3041 |
ASSERT(dv->sdev_attr); |
|
3042 |
if (SDEV_IS_PERSIST(dv) || |
|
3043 |
((vap->va_mask & ~AT_TIMES) != 0 && !SDEV_IS_DYNAMIC(dv))) { |
|
3044 |
sdev_vattr_merge(dv, vap); |
|
3045 |
rw_enter(&dv->sdev_contents, RW_WRITER); |
|
3046 |
error = sdev_shadow_node(dv, cred); |
|
3047 |
rw_exit(&dv->sdev_contents); |
|
3048 |
rw_exit(&parent->sdev_contents); |
|
3049 |
||
3050 |
if (error) |
|
3051 |
return (error); |
|
3052 |
return (VOP_SETATTR(dv->sdev_attrvp, vap, flags, cred, NULL)); |
|
3053 |
} |
|
3054 |
||
3055 |
||
3056 |
/* |
|
3057 |
* sdev_attr was allocated in sdev_mknode |
|
3058 |
*/ |
|
3059 |
rw_enter(&dv->sdev_contents, RW_WRITER); |
|
5331 | 3060 |
error = secpolicy_vnode_setattr(cred, vp, vap, |
3061 |
dv->sdev_attr, flags, sdev_unlocked_access, dv); |
|
2621 | 3062 |
if (error) { |
3063 |
rw_exit(&dv->sdev_contents); |
|
3064 |
rw_exit(&parent->sdev_contents); |
|
3065 |
return (error); |
|
3066 |
} |
|
3067 |
||
3068 |
get = dv->sdev_attr; |
|
3069 |
if (mask & AT_MODE) { |
|
3070 |
get->va_mode &= S_IFMT; |
|
3071 |
get->va_mode |= vap->va_mode & ~S_IFMT; |
|
3072 |
} |
|
3073 |
||
3074 |
if ((mask & AT_UID) || (mask & AT_GID)) { |
|
3075 |
if (mask & AT_UID) |
|
3076 |
get->va_uid = vap->va_uid; |
|
3077 |
if (mask & AT_GID) |
|
3078 |
get->va_gid = vap->va_gid; |
|
3079 |
/* |
|
3080 |
* a callback must be provided if the protocol is set |
|
3081 |
*/ |
|
3082 |
if ((protocol & AT_UID) || (protocol & AT_GID)) { |
|
3083 |
ASSERT(callback); |
|
3084 |
error = callback(dv, get, protocol); |
|
3085 |
if (error) { |
|
3086 |
rw_exit(&dv->sdev_contents); |
|
3087 |
rw_exit(&parent->sdev_contents); |
|
3088 |
return (error); |
|
3089 |
} |
|
3090 |
} |
|
3091 |
} |
|
3092 |
||
3093 |
if (mask & AT_ATIME) |
|
3094 |
get->va_atime = vap->va_atime; |
|
3095 |
if (mask & AT_MTIME) |
|
3096 |
get->va_mtime = vap->va_mtime; |
|
3097 |
if (mask & (AT_MODE | AT_UID | AT_GID | AT_CTIME)) { |
|
3098 |
gethrestime(&get->va_ctime); |
|
3099 |
} |
|
3100 |
||
3101 |
sdev_vattr_merge(dv, get); |
|
3102 |
rw_exit(&dv->sdev_contents); |
|
3103 |
rw_exit(&parent->sdev_contents); |
|
3104 |
return (0); |
|
3105 |
} |
|
5895
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3106 |
|
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3107 |
/* |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3108 |
* a generic inactive() function |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3109 |
*/ |
10097
e33d224110c9
6851199 unused /dev nameservices code can be removed
Eric Taylor <Eric.Taylor@Sun.COM>
parents:
8023
diff
changeset
|
3110 |
/*ARGSUSED*/ |
5895
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3111 |
void |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3112 |
devname_inactive_func(struct vnode *vp, struct cred *cred, |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3113 |
void (*callback)(struct vnode *)) |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3114 |
{ |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3115 |
int clean; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3116 |
struct sdev_node *dv = VTOSDEV(vp); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3117 |
struct sdev_node *ddv = dv->sdev_dotdot; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3118 |
int state; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3119 |
|
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3120 |
rw_enter(&ddv->sdev_contents, RW_WRITER); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3121 |
state = dv->sdev_state; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3122 |
|
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3123 |
mutex_enter(&vp->v_lock); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3124 |
ASSERT(vp->v_count >= 1); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3125 |
|
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3126 |
if (vp->v_count == 1 && callback != NULL) |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3127 |
callback(vp); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3128 |
|
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3129 |
clean = (vp->v_count == 1) && (state == SDEV_ZOMBIE); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3130 |
|
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3131 |
/* |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3132 |
* last ref count on the ZOMBIE node is released. |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3133 |
* clean up the sdev_node, and |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3134 |
* release the hold on the backing store node so that |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3135 |
* the ZOMBIE backing stores also cleaned out. |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3136 |
*/ |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3137 |
if (clean) { |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3138 |
ASSERT(ddv); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3139 |
|
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3140 |
ddv->sdev_nlink--; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3141 |
if (vp->v_type == VDIR) { |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3142 |
dv->sdev_nlink--; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3143 |
} |
6347
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
3144 |
if ((dv->sdev_flags & SDEV_STALE) == 0) |
4a8f3222f5f2
6683580 remount during install causes panic in subsequent lookup
jg
parents:
6335
diff
changeset
|
3145 |
avl_remove(&ddv->sdev_entries, dv); |
5895
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3146 |
dv->sdev_nlink--; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3147 |
--vp->v_count; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3148 |
mutex_exit(&vp->v_lock); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3149 |
sdev_nodedestroy(dv, 0); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3150 |
} else { |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3151 |
--vp->v_count; |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3152 |
mutex_exit(&vp->v_lock); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3153 |
} |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3154 |
rw_exit(&ddv->sdev_contents); |
f251acdd9bdc
PSARC/2006/499 Clearview Nemo unification and vanity naming
yz147064
parents:
5331
diff
changeset
|
3155 |
} |