author | eschrock |
Fri, 28 Mar 2008 17:41:18 -0700 | |
changeset 6316 | 40d5384cc8b2 |
parent 6239 | 88a5439d4722 |
child 6429 | a90bb8316257 |
permissions | -rw-r--r-- |
0 | 1 |
#!/usr/perl5/bin/perl -w |
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# |
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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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# Copyright 2008 Sun Microsystems, Inc. All rights reserved. |
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# Use is subject to license terms. |
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# |
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# ident "%Z%%M% %I% %E% SMI" |
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# |
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# |
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# Check ELF information. |
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# |
|
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# This script descends a directory hierarchy inspecting ELF dynamic executables |
|
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# and shared objects. The general theme is to verify that common Makefile rules |
|
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# have been used to build these objects. Typical failures occur when Makefile |
|
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# rules are re-invented rather than being inherited from "cmd/lib" Makefiles. |
|
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# |
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# As always, a number of components don't follow the rules, and these are |
|
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# excluded to reduce this scripts output. Pathnames used for this exclusion |
|
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# assume this script is being run over a "proto" area. The -a (all) option |
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# skips any exclusions. |
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# |
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# By default any file that has conditions that should be reported is first |
|
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# listed and then each condition follows. The -o (one-line) option produces a |
|
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# more terse output which is better for sorting/diffing with "nightly". |
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# |
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# NOTE: missing dependencies, symbols or versions are reported by running the |
|
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# file through ldd(1). As objects within a proto area are built to exist in a |
|
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# base system, standard use of ldd(1) will bind any objects to dependencies |
|
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# that exist in the base system. It is frequently the case that newer objects |
|
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# exist in the proto area that are required to satisfy other objects |
|
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# dependencies, and without using these newer objects an ldd(1) will produce |
|
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# misleading error messages. To compensate for this, the -d option (or the |
|
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# existence of the CODEMSG_WS/ROOT environment variables) cause the creation of |
|
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# alternative dependency mappings via crle(1) configuration files that establish |
|
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# any proto shared objects as alternatives to their base system location. Thus |
|
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# ldd(1) can be executed against these configuration files so that objects in a |
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# proto area bind to their dependencies in the same proto area. |
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||
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# Define all global variables (required for strict) |
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use vars qw($SkipDirs $SkipFiles $SkipTextrelFiles $SkipDirectBindFiles); |
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use vars qw($SkipUndefDirs $SkipUndefFiles $SkipUnusedDirs $SkipUnusedFiles); |
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use vars qw($SkipStabFiles $SkipNoExStkFiles $SkipCrleConf); |
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use vars qw($UnusedNoise $Prog $Mach $Isalist $Env $Ena64 $Tmpdir $Error); |
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use vars qw($UnusedFiles $UnusedPaths $LddNoU $Crle32 $Crle64 $Conf32 $Conf64); |
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use vars qw($SkipDirectBindDirs $SkipInterps $SkipSymSort $OldDeps %opt); |
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use strict; |
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70 |
||
71 |
||
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# Define any directories we should skip completely. |
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$SkipDirs = qr{ |
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etc/lib | # special - used for partial statics |
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usr/lib/devfsadm | # 4382889 |
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usr/lib/libc | # optimized libc |
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usr/lib/rcm | # 4426119 |
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usr/perl5 | # alan's taking care of these :-) |
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usr/src # no need to look at shipped source |
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}x; |
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||
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# Define any files we should skip completely. |
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$SkipFiles = qr{ ^(?: |
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ld\.so\.1 | # confusing but correct dependencies |
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lddstub | # lddstub has no dependencies |
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libmakestate\.so\.1 | # temporary; delivered by compiler group |
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libm\.so\.1 | # temporary; delivered by compiler group |
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libm\.so\.2 | # temporary; delivered by compiler group |
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geniconvtbl\.so | # 4384329 |
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libssagent\.so\.1 | # 4328854 |
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libpsvcplugin_psr\.so\.1 | # 4385799 |
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libpsvcpolicy_psr\.so\.1 | # " " |
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libpsvcpolicy\.so\.1 | # " " |
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picl_slm\.so | # " " |
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libcrypto_extra\.so\.0\.9\.8 | # OpenSSL SUNWcry filter lib |
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libssl_extra\.so\.0\.9\.8 | # OpenSSL SUNWcry filter lib |
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fcpackage\.so | # circular dependency on fcthread.so |
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mod_ipp\.so | # Apache loadable module |
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grub |
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)$ |
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}x; |
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# Define any files that are allowed text relocations. |
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$SkipTextrelFiles = qr{ ^(?: |
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unix | # kernel models are non-pic |
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mdb # relocations against __RTC (dbx) |
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)$ |
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}x; |
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# Define any directories or files that are allowed to have no direct bound |
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# symbols |
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$SkipDirectBindDirs = qr{ |
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usr/ucb |
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}x; |
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115 |
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$SkipDirectBindFiles = qr{ ^(?: |
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unix | |
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sbcp | |
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libproc.so.1 | |
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libnisdb.so.2 |
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)$ |
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}x; |
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# Define any files that are allowed undefined references. |
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$SkipUndefDirs = qr{ |
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usr/lib/elfedit/ | # elfedit modules have callbacks |
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usr/lib/inet/ppp/ | # pppd plugins have callbacks |
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usr/lib/libp/ | # libc.so.1 requires _mcount |
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/lib/mdb/ | # mdb modules have callbacks |
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/lib/fm/fmd/plugins/ | # fmd modules have callbacks |
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/lib/fm/fmd/schemes/ | # fmd schemes have callbacks |
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/lib/scsi/plugins/ | # scsi plugins have callbacks |
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/i86pc/lib/mtst/ # mtst modules have callbacks |
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}x; |
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$SkipUndefFiles = qr{ ^(?: |
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libthread_db\.so\.0 | # callbacks to proc service interface |
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libthread_db\.so\.1 | # " " " " |
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librtld_db\.so\.1 | # " " " " |
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libc_db\.so\.1 | # " " " " |
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libldstab\.so\.1 | # link-edit support libraries have |
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libld\.so\.[2-4] | # callback to the link-editors |
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liblddbg\.so\.4 | # " " " " |
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librtld\.so\.1 | # " " " " |
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145 |
libnisdb\.so\.2 | # C++ |
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146 |
libsvm\.so\.1 | # libspmicommon.so.1 lacking |
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147 |
libwanboot\.so\.1 | # libcrypto.a and libssl.a |
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148 |
libwrap\.so\.1\.0 | # uses symbols provided by application |
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149 |
fcthread\.so | # uses symbols provided by application |
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150 |
fn\.so\.2 | # callback to automount |
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151 |
preen_md\.so\.1 | # callback to driver |
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152 |
libike\.so\.1 | # callbacks to in.iked for IKE policy |
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153 |
devfsadmd_mod\.so | # sysevent module callback to syseventd |
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154 |
sysevent_conf_mod\.so | # sysevent module callback to syseventd |
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sysevent_reg_mod\.so # sysevent module callback to syseventd |
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156 |
)$ |
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157 |
}x; |
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158 |
||
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# Define any files that have unused dependencies. |
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$SkipUnusedDirs = qr{ |
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lib/picl/plugins/ | # require devtree dependencies |
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/lib/libp # profile libc makes libm an unused |
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}x; # dependency of standard libc |
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164 |
||
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$SkipUnusedFiles = qr{ ^(?: |
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166 |
devfsadm | # 4382889 |
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disks | # " " |
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tapes | # " " |
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ports | # " " |
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audlinks | # " " |
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171 |
devlinks | # " " |
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drvconfig | # " " |
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173 |
ntptrace | # on intel doesn't need libmd5 |
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174 |
ocfserv | # libsched unreference by libjvm, |
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175 |
poold | # see 4952319. |
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176 |
libc\.so\.1\.9 | # 4lib/libc versions have private |
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libc\.so\.2\.9 # copies of stuff from libc. |
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178 |
)$ |
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179 |
}x; |
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180 |
||
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# Define any files that should contain debugging information. |
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182 |
$SkipStabFiles = qr{ ^(?: |
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abi_.* | |
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184 |
interceptors\.so\.1 | |
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185 |
unix |
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186 |
)$ |
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187 |
}x; |
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188 |
||
189 |
# Define any files that don't require a non-executable stack definition. |
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190 |
$SkipNoExStkFiles = qr{ ^(?: |
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191 |
forth | |
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192 |
unix | |
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193 |
multiboot |
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194 |
)$ |
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195 |
}x; |
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196 |
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# Identify any files that should be skipped when building a crle(1) |
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# configuration file. As the hwcap libraries can be loop-back mounted onto |
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# libc, these can confuse crle(1) because of their identical dev/inode. |
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$SkipCrleConf = qr{ |
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lib/libc/libc_hwcap |
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}x; |
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203 |
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# Define any files that should only have unused (ldd -u) processing. |
205 |
$UnusedPaths = qr{ |
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ucb/shutdown # libucb interposes on libc and makes |
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207 |
# dependencies on libc seem unnecessary |
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208 |
}x; |
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209 |
||
210 |
$UnusedFiles = qr{ ^(?: |
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211 |
rpc\.nisd # CCNEEDED makes pthread unreferenced |
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212 |
)$ |
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213 |
}x; |
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||
215 |
# Define unused dependencies we should ignore. |
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216 |
# libCrun has a unnecessary dependency on libw, and libmapmalloc is often |
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217 |
# defined to interpose on libc but isn't used by the application itself. |
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# Threads dependencies look unused if libc is bound first. |
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219 |
$UnusedNoise = qr{ |
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libw\.so\.1;\ unused | |
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221 |
unused\ object=.*libw\.so\.1 | |
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222 |
libthread\.so\.1;\ unused | |
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223 |
libpthread\.so\.1;\ unused | |
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224 |
unused\ object=.*libpthread\.so\.1 | |
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225 |
libnsl\.so\.1;\ unused\ dependency\ of\ .*libxslt\.so\.1 | |
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226 |
libdl\.so\.1;\ unused\ dependency\ of\ .*libspmicommon\.so\.1 | |
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227 |
libdl\.so\.1;\ unused\ dependency\ of\ .*libCrun\.so\.1 | |
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228 |
libfru\.so\.1;\ unused\ object=.*libdl\.so\.1 | |
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libfrupicl\.so\.1;\ unused\ object=.*libdl\.so\.1 | |
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libmapmalloc\.so\.1;\ unused | |
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unused\ dependency\ of\ .*libstdc\+\+\.so\.6 | |
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unreferenced\ object=.*libstdc\+\+\.so\.6 | |
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unused\ dependency\ of\ .*libnetsnmp\.so\.5 | |
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unused\ dependency\ of\ .*libnetsnmphelpers\.so\.5 | |
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unused\ dependency\ of\ .*libnetsnmpmibs\.so\.5 | |
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unused\ dependency\ of\ .*libnetsnmpagent\.so\.5 |
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}x; |
238 |
||
239 |
# Define interpreters we should ignore. |
|
240 |
$SkipInterps = qr{ |
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241 |
misc/krtld | |
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242 |
misc/amd64/krtld | |
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243 |
misc/sparcv9/krtld |
|
244 |
}x; |
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245 |
||
246 |
# Catch libintl and libw, although ld(1) will bind to these and thus determine |
|
247 |
# they're needed, their content was moved into libc as of on297 build 7. |
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248 |
# libthread and libpthread were completely moved into libc as of on10 build 53. |
|
249 |
# Also, catch libdl, whose content was moved into libc as of on10 build 49. |
|
250 |
$OldDeps = qr{ ^(?: |
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251 |
libintl\.so\.1 | |
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252 |
libw\.so\.1 | |
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253 |
libthread\.so\.1 | |
|
254 |
libpthread\.so\.1 | |
|
255 |
libdl\.so\.1 |
|
256 |
)$ |
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257 |
}x; |
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258 |
||
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# Files for which we skip checking of duplicate addresses in the |
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# symbol sort sections. Such exceptions should be rare --- most code will |
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# not have duplicate addresses, since it takes assember or a "#pragma weak" |
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# to do such aliasing in C. C++ is different: The compiler generates aliases |
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# for implementation reasons, and the mangled names used to encode argument |
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# and return value types are difficult to handle well in mapfiles. |
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# Furthermore, the Sun compiler and gcc use different and incompatible |
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# name mangling conventions. Since ON must be buildable by either, we |
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# would have to maintain two sets of mapfiles for each such object. |
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# C++ use is rare in ON, so this is not worth pursuing. |
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# |
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$SkipSymSort = qr{ ^.*(?: |
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opt/SUNWdtrt/tst/common/pid/tst.weak2.exe | # DTrace test |
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lib/amd64/libnsl\.so\.1 | # C++ |
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lib/sparcv9/libnsl\.so\.1 | # C++ |
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lib/sparcv9/libfru\.so\.1 | # C++ |
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usr/lib/sgml/nsgmls # C++ |
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)$ |
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}x; |
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|
0 | 279 |
use Getopt::Std; |
280 |
||
281 |
# ----------------------------------------------------------------------------- |
|
282 |
||
283 |
# Reliably compare two OS revisions. Arguments are <ver1> <op> <ver2>. |
|
284 |
# <op> is the string form of a normal numeric comparison operator. |
|
285 |
sub cmp_os_ver { |
|
286 |
my @ver1 = split(/\./, $_[0]); |
|
287 |
my $op = $_[1]; |
|
288 |
my @ver2 = split(/\./, $_[2]); |
|
289 |
||
290 |
push @ver2, ("0") x $#ver1 - $#ver2; |
|
291 |
push @ver1, ("0") x $#ver2 - $#ver1; |
|
292 |
||
293 |
my $diff = 0; |
|
294 |
while (@ver1 || @ver2) { |
|
295 |
if (($diff = shift(@ver1) - shift(@ver2)) != 0) { |
|
296 |
last; |
|
297 |
} |
|
298 |
} |
|
299 |
return (eval "$diff $op 0" ? 1 : 0); |
|
300 |
} |
|
301 |
||
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# This script relies on ldd returning output reflecting only the binary |
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# contents. But if LD_PRELOAD* environment variables are present, libraries |
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# named by them will also appear in the output, disrupting our analysis. |
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# So, before we get too far, scrub the environment. |
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changeset
|
306 |
|
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6410293 check_rtime should unset LD_PRELOAD* variables
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changeset
|
307 |
delete($ENV{LD_PRELOAD}); |
269c1351dec2
6410293 check_rtime should unset LD_PRELOAD* variables
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1706
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changeset
|
308 |
delete($ENV{LD_PRELOAD_32}); |
269c1351dec2
6410293 check_rtime should unset LD_PRELOAD* variables
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|
309 |
delete($ENV{LD_PRELOAD_64}); |
269c1351dec2
6410293 check_rtime should unset LD_PRELOAD* variables
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|
310 |
|
0 | 311 |
# Establish a program name for any error diagnostics. |
312 |
chomp($Prog = `basename $0`); |
|
313 |
||
314 |
# Determine what machinery is available. |
|
315 |
$Mach = `uname -p`; |
|
316 |
$Isalist = `isalist`; |
|
317 |
$Env = ""; |
|
318 |
if ($Mach =~ /sparc/) { |
|
319 |
if ($Isalist =~ /sparcv9/) { |
|
320 |
$Ena64 = "ok"; |
|
321 |
} |
|
322 |
} elsif ($Mach =~ /i386/) { |
|
323 |
if ($Isalist =~ /amd64/) { |
|
324 |
$Ena64 = "ok"; |
|
325 |
} |
|
326 |
} |
|
327 |
||
328 |
# Check that we have arguments. |
|
329 |
if ((getopts('ad:imos', \%opt) == 0) || ($#ARGV == -1)) { |
|
330 |
print "usage: $Prog [-a] [-d depdir] [-m] [-o] [-s] file | dir, ...\n"; |
|
331 |
print "\t[-a]\t\tprocess all files (ignore any exception lists)\n"; |
|
332 |
print "\t[-d dir]\testablish dependencies from under directory\n"; |
|
333 |
print "\t[-i]\t\tproduce dynamic table entry information\n"; |
|
334 |
print "\t[-m]\t\tprocess mcs(1) comments\n"; |
|
335 |
print "\t[-o]\t\tproduce one-liner output (prefixed with pathname)\n"; |
|
336 |
print "\t[-s]\t\tprocess .stab and .symtab entries\n"; |
|
337 |
exit 1; |
|
338 |
} else { |
|
339 |
my($Proto); |
|
340 |
||
341 |
if ($opt{d}) { |
|
342 |
# User specified dependency directory - make sure it exists. |
|
343 |
if (! -d $opt{d}) { |
|
344 |
print "$Prog: $opt{d} is not a directory\n"; |
|
345 |
exit 1; |
|
346 |
} |
|
347 |
$Proto = $opt{d}; |
|
348 |
||
349 |
} elsif ($ENV{CODEMGR_WS}) { |
|
350 |
my($Root); |
|
351 |
||
352 |
# Without a user specified dependency directory see if we're |
|
353 |
# part of a codemanager workspace and if a proto area exists. |
|
354 |
if (($Root = $ENV{ROOT}) && (-d $Root)) { |
|
355 |
$Proto = $Root; |
|
356 |
} |
|
357 |
} |
|
358 |
||
359 |
if (!($Tmpdir = $ENV{TMPDIR}) || (! -d $Tmpdir)) { |
|
360 |
$Tmpdir = "/tmp"; |
|
361 |
} |
|
362 |
||
363 |
# Look for dependencies under $Proto. |
|
364 |
if ($Proto) { |
|
365 |
# To support alternative dependency mapping we'll need ldd(1)'s |
|
366 |
# -e option. This is relatively new (s81_30), so make sure |
|
3967
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
367 |
# ldd(1) is capable before gathering any dependency information. |
0 | 368 |
if (system('ldd -e /usr/lib/lddstub 2> /dev/null')) { |
369 |
print "ldd: does not support -e, unable to "; |
|
370 |
print "create alternative dependency mappingings.\n"; |
|
371 |
print "ldd: option added under 4390308 (s81_30).\n\n"; |
|
372 |
} else { |
|
373 |
# Gather dependencies and construct a alternative |
|
374 |
# dependency mapping via a crle(1) configuration file. |
|
375 |
GetDeps($Proto, "/"); |
|
376 |
GenConf(); |
|
377 |
} |
|
378 |
} |
|
379 |
||
380 |
# To support unreferenced dependency detection we'll need ldd(1)'s -U |
|
381 |
# option. This is relatively new (4638070), and if not available we |
|
382 |
# can still fall back to -u. Even with this option, don't use -U with |
|
383 |
# releases prior to 5.10 as the cleanup for -U use only got integrated |
|
384 |
# into 5.10 under 4642023. Note, that nightly doesn't typically set a |
|
385 |
# RELEASE from the standard <env> files. Users who wish to disable use |
|
386 |
# of ldd(1)'s -U should set (or uncomment) RELEASE in their <env> file |
|
387 |
# if using nightly, or otherwise establish it in their environment. |
|
388 |
if (system('ldd -U /usr/lib/lddstub 2> /dev/null')) { |
|
389 |
$LddNoU = 1; |
|
390 |
} else { |
|
391 |
my($Release); |
|
392 |
||
393 |
if (($Release = $ENV{RELEASE}) && |
|
394 |
(cmp_os_ver($Release, "<", "5.10"))) { |
|
395 |
$LddNoU = 1; |
|
396 |
} else { |
|
397 |
$LddNoU = 0; |
|
398 |
} |
|
399 |
} |
|
400 |
||
401 |
# For each argument determine if we're dealing with a file or directory. |
|
402 |
foreach my $Arg (@ARGV) { |
|
403 |
# Ignore symbolic links. |
|
404 |
if (-l $Arg) { |
|
405 |
next; |
|
406 |
} |
|
407 |
||
408 |
if (!stat($Arg)) { |
|
409 |
next; |
|
410 |
} |
|
411 |
||
412 |
# Process simple files. |
|
413 |
if (-f _) { |
|
414 |
my($RelPath) = $Arg; |
|
415 |
my($File) = $Arg; |
|
416 |
my($Secure) = 0; |
|
417 |
||
418 |
$RelPath =~ s!^.*/!./!; |
|
419 |
$File =~ s!^.*/!!; |
|
420 |
||
421 |
if (-u _ || -g _) { |
|
422 |
$Secure = 1; |
|
423 |
} |
|
424 |
||
425 |
ProcFile($Arg, $RelPath, $File, $Secure); |
|
426 |
next; |
|
427 |
} |
|
428 |
# Process directories. |
|
429 |
if (-d _) { |
|
430 |
ProcDir($Arg, "."); |
|
431 |
next; |
|
432 |
} |
|
433 |
||
434 |
print "$Arg is not a file or directory\n"; |
|
435 |
$Error = 1; |
|
436 |
} |
|
437 |
||
438 |
# Cleanup |
|
439 |
CleanUp(); |
|
440 |
} |
|
441 |
||
442 |
$Error = 0; |
|
443 |
||
3967
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
444 |
# Clean up any temporary files. |
0 | 445 |
sub CleanUp { |
446 |
if ($Crle64) { |
|
447 |
unlink $Crle64; |
|
448 |
} |
|
449 |
if ($Conf64) { |
|
450 |
unlink $Conf64; |
|
451 |
} |
|
452 |
if ($Crle32) { |
|
453 |
unlink $Crle32; |
|
454 |
} |
|
455 |
if ($Conf32) { |
|
456 |
unlink $Conf32; |
|
457 |
} |
|
458 |
} |
|
459 |
||
460 |
# Create an output message, either a one-liner (under -o) or preceded by the |
|
461 |
# files relative pathname as a title. |
|
462 |
sub OutMsg { |
|
463 |
my($Ttl, $Path, $Msg) = @_; |
|
464 |
||
465 |
if ($opt{o}) { |
|
466 |
$Msg =~ s/^[ \t]*//; |
|
467 |
print "$Path: $Msg\n"; |
|
468 |
} else { |
|
469 |
if ($Ttl eq 0) { |
|
470 |
print "==== $Path ====\n"; |
|
471 |
} |
|
472 |
print "$Msg\n"; |
|
473 |
} |
|
474 |
} |
|
475 |
||
476 |
# Determine whether this a ELF dynamic object and if so investigate its runtime |
|
477 |
# attributes. |
|
478 |
sub ProcFile { |
|
479 |
my($FullPath, $RelPath, $File, $Secure) = @_; |
|
480 |
my(@Elf, @Ldd, $Dyn, $Intp, $Dll, $Ttl, $Sym, $Interp, $Stack); |
|
4292
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
481 |
my($Sun, $Relsz, $Pltsz, $Uns, $Tex, $Stab, $Strip, $Lddopt, $SymSort); |
0 | 482 |
my($Val, $Header, $SkipLdd, $IsX86, $RWX); |
5905 | 483 |
my($HasDirectBinding); |
0 | 484 |
|
485 |
# Ignore symbolic links. |
|
486 |
if (-l $FullPath) { |
|
487 |
return; |
|
488 |
} |
|
489 |
||
490 |
$Ttl = 0; |
|
491 |
@Ldd = 0; |
|
492 |
||
493 |
# Determine whether we have access to inspect the file. |
|
494 |
if (!(-r $FullPath)) { |
|
495 |
OutMsg($Ttl++, $RelPath, |
|
496 |
"\tunable to inspect file: permission denied"); |
|
497 |
return; |
|
498 |
} |
|
499 |
||
500 |
# Determine if this is a file we don't care about. |
|
501 |
if (!$opt{a}) { |
|
502 |
if ($File =~ $SkipFiles) { |
|
503 |
return; |
|
504 |
} |
|
505 |
} |
|
506 |
||
507 |
# Determine whether we have a executable (static or dynamic) or a |
|
508 |
# shared object. |
|
5905 | 509 |
@Elf = split(/\n/, `elfdump -epdicy $FullPath 2>&1`); |
0 | 510 |
|
511 |
$Dyn = $Intp = $Dll = $Stack = $IsX86 = $RWX = 0; |
|
512 |
$Interp = 1; |
|
513 |
$Header = 'None'; |
|
514 |
foreach my $Line (@Elf) { |
|
515 |
# If we have an invalid file type (which we can tell from the |
|
516 |
# first line), or we're processing an archive, bail. |
|
517 |
if ($Header eq 'None') { |
|
518 |
if (($Line =~ /invalid file/) || |
|
519 |
($Line =~ /$FullPath(.*):/)) { |
|
520 |
return; |
|
521 |
} |
|
522 |
} |
|
523 |
||
524 |
if ($Line =~ /^ELF Header/) { |
|
525 |
$Header = 'Ehdr'; |
|
526 |
||
527 |
} elsif ($Line =~ /^Program Header/) { |
|
528 |
$Header = 'Phdr'; |
|
529 |
$RWX = 0; |
|
530 |
||
531 |
} elsif ($Line =~ /^Interpreter/) { |
|
532 |
$Header = 'Intp'; |
|
533 |
||
534 |
} elsif ($Line =~ /^Dynamic Section/) { |
|
535 |
# A dynamic section indicates we're a dynamic object |
|
536 |
# (this makes sure we don't check static executables). |
|
537 |
$Dyn = 1; |
|
538 |
||
539 |
} elsif (($Header eq 'Ehdr') && ($Line =~ /e_type:/)) { |
|
540 |
# The e_type field indicates whether this file is a |
|
541 |
# shared object (ET_DYN) or an executable (ET_EXEC). |
|
542 |
if ($Line =~ /ET_DYN/) { |
|
543 |
$Dll = 1; |
|
544 |
} elsif ($Line !~ /ET_EXEC/) { |
|
545 |
return; |
|
546 |
} |
|
547 |
} elsif (($Header eq 'Ehdr') && ($Line =~ /ei_class:/)) { |
|
548 |
# If we encounter a 64-bit object, but we're not running |
|
549 |
# on a 64-bit system, suppress calling ldd(1). |
|
550 |
if (($Line =~ /ELFCLASS64/) && !$Ena64) { |
|
551 |
$SkipLdd = 1; |
|
552 |
} |
|
553 |
} elsif (($Header eq 'Ehdr') && ($Line =~ /e_machine:/)) { |
|
554 |
# If it's a X86 object, we need to enforce RW- data. |
|
555 |
if (($Line =~ /(EM_AMD64|EM_386)/)) { |
|
556 |
$IsX86 = 1; |
|
557 |
} |
|
558 |
} elsif (($Header eq 'Phdr') && |
|
559 |
($Line =~ /\[ PF_X PF_W PF_R \]/)) { |
|
560 |
# RWX segment seen. |
|
561 |
$RWX = 1; |
|
562 |
||
563 |
} elsif (($Header eq 'Phdr') && |
|
564 |
($Line =~ /\[ PT_LOAD \]/ && $RWX && $IsX86)) { |
|
565 |
# Seen an RWX PT_LOAD segment. |
|
566 |
if ($File !~ $SkipNoExStkFiles) { |
|
567 |
OutMsg($Ttl++, $RelPath, |
|
568 |
"\tapplication requires non-executable " . |
|
569 |
"data\t<no -Mmapfile_noexdata?>"); |
|
570 |
} |
|
571 |
||
572 |
} elsif (($Header eq 'Phdr') && |
|
573 |
($Line =~ /\[ PT_SUNWSTACK \]/)) { |
|
574 |
# This object defines a non-executable stack. |
|
575 |
$Stack = 1; |
|
576 |
||
577 |
} elsif (($Header eq 'Intp') && !$opt{a} && |
|
578 |
($Line =~ $SkipInterps)) { |
|
579 |
# This object defines an interpretor we should skip. |
|
580 |
$Interp = 0; |
|
581 |
} |
|
582 |
} |
|
583 |
||
584 |
# Determine whether this ELF executable or shared object has a |
|
585 |
# conforming mcs(1) comment section. If the correct $(POST_PROCESS) |
|
586 |
# macros are used, only a 3 or 4 line .comment section should exist |
|
587 |
# containing one or two "@(#)SunOS" identifying comments (one comment |
|
588 |
# for a non-debug build, and two for a debug build). The results of |
|
589 |
# the following split should be three or four lines, the last empty |
|
590 |
# line being discarded by the split. |
|
591 |
if ($opt{m}) { |
|
592 |
my(@Mcs, $Con, $Dev); |
|
593 |
||
594 |
@Mcs = split(/\n/, `mcs -p $FullPath 2>&1`); |
|
595 |
||
596 |
$Con = $Dev = $Val = 0; |
|
597 |
foreach my $Line (@Mcs) { |
|
598 |
$Val++; |
|
599 |
||
600 |
if (($Val == 3) && ($Line !~ /^@\(#\)SunOS/)) { |
|
601 |
$Con = 1; |
|
602 |
last; |
|
603 |
} |
|
604 |
if (($Val == 4) && ($Line =~ /^@\(#\)SunOS/)) { |
|
605 |
$Dev = 1; |
|
606 |
next; |
|
607 |
} |
|
608 |
if (($Dev == 0) && ($Val == 4)) { |
|
609 |
$Con = 1; |
|
610 |
last; |
|
611 |
} |
|
612 |
if (($Dev == 1) && ($Val == 5)) { |
|
613 |
$Con = 1; |
|
614 |
last; |
|
615 |
} |
|
616 |
} |
|
617 |
if ($opt{m} && ($Con == 1)) { |
|
618 |
OutMsg($Ttl++, $RelPath, |
|
619 |
"\tnon-conforming mcs(1) comment\t<no \$(POST_PROCESS)?>"); |
|
620 |
} |
|
621 |
} |
|
622 |
||
623 |
# Applications should contain a non-executable stack definition. |
|
624 |
if (($Dll == 0) && ($Stack == 0)) { |
|
625 |
if (!$opt{a}) { |
|
626 |
if ($File =~ $SkipNoExStkFiles) { |
|
627 |
goto DYN; |
|
628 |
} |
|
629 |
} |
|
630 |
OutMsg($Ttl++, $RelPath, |
|
631 |
"\tapplication requires non-executable stack\t<no -Mmapfile_noexstk?>"); |
|
632 |
} |
|
633 |
||
634 |
DYN: |
|
635 |
# Having caught any static executables in the mcs(1) check and non- |
|
636 |
# executable stack definition check, continue with dynamic objects |
|
637 |
# from now on. |
|
638 |
if ($Dyn eq 0) { |
|
639 |
return; |
|
640 |
} |
|
641 |
||
642 |
# Only use ldd unless we've encountered an interpreter that should |
|
3967
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
643 |
# be skipped. |
0 | 644 |
if (!$SkipLdd && $Interp) { |
4297
ada3277692df
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections (fix build noise)
ab196087
parents:
4292
diff
changeset
|
645 |
my $LDDFullPath = $FullPath; |
ada3277692df
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections (fix build noise)
ab196087
parents:
4292
diff
changeset
|
646 |
|
0 | 647 |
if ($Secure) { |
648 |
# The execution of a secure application over an nfs file |
|
649 |
# system mounted nosuid will result in warning messages |
|
650 |
# being sent to /var/adm/messages. As this type of |
|
651 |
# environment can occur with root builds, move the file |
|
652 |
# being investigated to a safe place first. In addition |
|
653 |
# remove its secure permission so that it can be |
|
654 |
# influenced by any alternative dependency mappings. |
|
655 |
||
656 |
my($TmpPath) = "$Tmpdir/$File"; |
|
657 |
||
4297
ada3277692df
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections (fix build noise)
ab196087
parents:
4292
diff
changeset
|
658 |
system('cp', $LDDFullPath, $TmpPath); |
0 | 659 |
chmod 0777, $TmpPath; |
4297
ada3277692df
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections (fix build noise)
ab196087
parents:
4292
diff
changeset
|
660 |
$LDDFullPath = $TmpPath; |
0 | 661 |
} |
662 |
||
663 |
# Use ldd(1) to determine the objects relocatability and use. |
|
664 |
# By default look for all unreferenced dependencies. However, |
|
665 |
# some objects have legitimate dependencies that they do not |
|
666 |
# reference. |
|
667 |
if ($LddNoU || ($File =~ $UnusedFiles) || |
|
668 |
($RelPath =~ $UnusedPaths)) { |
|
669 |
$Lddopt = "-ru"; |
|
670 |
} else { |
|
671 |
$Lddopt = "-rU"; |
|
672 |
} |
|
4297
ada3277692df
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections (fix build noise)
ab196087
parents:
4292
diff
changeset
|
673 |
@Ldd = split(/\n/, `ldd $Lddopt $Env $LDDFullPath 2>&1`); |
0 | 674 |
if ($Secure) { |
4297
ada3277692df
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections (fix build noise)
ab196087
parents:
4292
diff
changeset
|
675 |
unlink $LDDFullPath; |
0 | 676 |
} |
677 |
} |
|
678 |
||
679 |
$Val = 0; |
|
680 |
$Sym = 5; |
|
681 |
$Uns = 1; |
|
682 |
||
683 |
LDD: foreach my $Line (@Ldd) { |
|
684 |
||
685 |
if ($Val == 0) { |
|
686 |
$Val = 1; |
|
687 |
# Make sure ldd(1) worked. One possible failure is that |
|
688 |
# this is an old ldd(1) prior to -e addition (4390308). |
|
689 |
if ($Line =~ /usage:/) { |
|
690 |
$Line =~ s/$/\t<old ldd(1)?>/; |
|
691 |
OutMsg($Ttl++, $RelPath, $Line); |
|
692 |
last; |
|
693 |
} elsif ($Line =~ /execution failed/) { |
|
694 |
OutMsg($Ttl++, $RelPath, $Line); |
|
695 |
last; |
|
696 |
} |
|
697 |
||
698 |
# It's possible this binary can't be executed, ie. we've |
|
699 |
# found a sparc binary while running on an intel system, |
|
700 |
# or a sparcv9 binary on a sparcv7/8 system. |
|
701 |
if ($Line =~ /wrong class/) { |
|
702 |
OutMsg($Ttl++, $RelPath, |
|
703 |
"\thas wrong class or data encoding"); |
|
704 |
next; |
|
705 |
} |
|
706 |
||
707 |
# Historically, ldd(1) likes executable objects to have |
|
708 |
# their execute bit set. Note that this test isn't |
|
709 |
# applied unless the -a option is in effect, as any |
|
710 |
# non-executable files are skipped by default to reduce |
|
711 |
# the cost of running this script. |
|
712 |
if ($Line =~ /not executable/) { |
|
713 |
OutMsg($Ttl++, $RelPath, |
|
714 |
"\tis not executable"); |
|
715 |
next; |
|
716 |
} |
|
717 |
} |
|
718 |
||
719 |
# Look for "file" or "versions" that aren't found. Note that |
|
720 |
# these lines will occur before we find any symbol referencing |
|
721 |
# errors. |
|
722 |
if (($Sym == 5) && ($Line =~ /not found\)/)) { |
|
723 |
if ($Line =~ /file not found\)/) { |
|
724 |
$Line =~ s/$/\t<no -zdefs?>/; |
|
725 |
} |
|
726 |
OutMsg($Ttl++, $RelPath, $Line); |
|
727 |
next; |
|
728 |
} |
|
729 |
# Look for relocations whose symbols can't be found. Note, we |
|
730 |
# only print out the first 5 relocations for any file as this |
|
731 |
# output can be excessive. |
|
732 |
if ($Sym && ($Line =~ /symbol not found/)) { |
|
733 |
# Determine if this file is allowed undefined |
|
734 |
# references. |
|
735 |
if ($Sym == 5) { |
|
736 |
if (!$opt{a}) { |
|
737 |
if ($RelPath =~ $SkipUndefDirs) { |
|
738 |
$Sym = 0; |
|
739 |
next LDD; |
|
740 |
} |
|
741 |
if ($File =~ $SkipUndefFiles) { |
|
742 |
$Sym = 0; |
|
743 |
next LDD; |
|
744 |
} |
|
745 |
} |
|
746 |
} |
|
747 |
if ($Sym-- == 1) { |
|
748 |
if (!$opt{o}) { |
|
749 |
OutMsg($Ttl++, $RelPath, |
|
750 |
"\tcontinued ..."); |
|
751 |
} |
|
752 |
next; |
|
753 |
} |
|
754 |
# Just print the symbol name. |
|
755 |
$Line =~ s/$/\t<no -zdefs?>/; |
|
756 |
OutMsg($Ttl++, $RelPath, $Line); |
|
757 |
next; |
|
758 |
} |
|
759 |
# Look for any unused dependencies. |
|
760 |
if ($Uns && ($Line =~ /unused/)) { |
|
761 |
if (!$opt{a}) { |
|
762 |
if ($RelPath =~ $SkipUnusedDirs) { |
|
763 |
$Uns = 0; |
|
764 |
next LDD; |
|
765 |
} |
|
766 |
if ($File =~ $SkipUnusedFiles) { |
|
767 |
$Uns = 0; |
|
768 |
next LDD; |
|
769 |
} |
|
770 |
||
771 |
# Remove any noise. |
|
772 |
if ($Line =~ $UnusedNoise) { |
|
773 |
$Uns = 0; |
|
774 |
next LDD; |
|
775 |
} |
|
776 |
} |
|
777 |
if ($Secure) { |
|
778 |
$Line =~ s!$Tmpdir/!!; |
|
779 |
} |
|
780 |
$Line =~ s/^[ \t]*(.*)/\t$1\t<remove lib or -zignore?>/; |
|
781 |
OutMsg($Ttl++, $RelPath, $Line); |
|
782 |
next; |
|
783 |
} |
|
784 |
} |
|
785 |
||
786 |
# Reuse the elfdump(1) data to investigate additional dynamic linking |
|
787 |
# information. |
|
788 |
||
4292
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
789 |
$Sun = $Relsz = $Pltsz = $Dyn = $Stab = $SymSort = 0; |
0 | 790 |
$Tex = $Strip = 1; |
5905 | 791 |
$HasDirectBinding = 0; |
0 | 792 |
|
793 |
$Header = 'None'; |
|
794 |
ELF: foreach my $Line (@Elf) { |
|
795 |
# We're only interested in the section headers and the dynamic |
|
796 |
# section. |
|
797 |
if ($Line =~ /^Section Header/) { |
|
798 |
$Header = 'Shdr'; |
|
799 |
||
800 |
if (($Sun == 0) && ($Line =~ /\.SUNW_reloc/)) { |
|
801 |
# This object has a combined relocation section. |
|
802 |
$Sun = 1; |
|
803 |
||
804 |
} elsif (($Stab == 0) && ($Line =~ /\.stab/)) { |
|
805 |
# This object contain .stabs sections |
|
806 |
$Stab = 1; |
|
4292
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
807 |
} elsif (($SymSort == 0) && |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
808 |
($Line =~ /\.SUNW_dyn(sym)|(tls)sort/)) { |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
809 |
# This object contains a symbol sort section |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
810 |
$SymSort = 1; |
0 | 811 |
} |
812 |
||
813 |
if (($Strip == 1) && ($Line =~ /\.symtab/)) { |
|
814 |
# This object contains a complete symbol table. |
|
815 |
$Strip = 0; |
|
816 |
} |
|
817 |
next; |
|
818 |
||
819 |
} elsif ($Line =~ /^Dynamic Section/) { |
|
820 |
$Header = 'Dyn'; |
|
821 |
next; |
|
5905 | 822 |
} elsif ($Line =~ /^Syminfo Section/) { |
823 |
$Header = 'Syminfo'; |
|
824 |
next; |
|
825 |
} elsif (($Header ne 'Dyn') && ($Header ne 'Syminfo')) { |
|
826 |
next; |
|
827 |
} |
|
828 |
||
829 |
# Look into the Syminfo section. |
|
830 |
# Does this object have at least one Directly Bound symbol? |
|
831 |
if (($Header eq 'Syminfo')) { |
|
832 |
my(@Symword); |
|
833 |
||
834 |
if ($HasDirectBinding == 1) { |
|
835 |
next; |
|
836 |
} |
|
837 |
||
838 |
@Symword = split(' ', $Line); |
|
839 |
||
840 |
if (!defined($Symword[1])) { |
|
841 |
next; |
|
842 |
} |
|
843 |
if ($Symword[1] =~ /B/) { |
|
844 |
$HasDirectBinding = 1; |
|
845 |
} |
|
0 | 846 |
next; |
847 |
} |
|
848 |
||
849 |
# Does this object contain text relocations. |
|
850 |
if ($Tex && ($Line =~ /TEXTREL/)) { |
|
851 |
# Determine if this file is allowed text relocations. |
|
852 |
if (!$opt{a}) { |
|
853 |
if ($File =~ $SkipTextrelFiles) { |
|
854 |
$Tex = 0; |
|
855 |
next ELF; |
|
856 |
} |
|
857 |
} |
|
858 |
OutMsg($Ttl++, $RelPath, |
|
859 |
"\tTEXTREL .dynamic tag\t\t\t<no -Kpic?>"); |
|
860 |
$Tex = 0; |
|
861 |
next; |
|
862 |
} |
|
863 |
||
864 |
# Does this file have any relocation sections (there are a few |
|
865 |
# psr libraries with no relocations at all, thus a .SUNW_reloc |
|
866 |
# section won't exist either). |
|
867 |
if (($Relsz == 0) && ($Line =~ / RELA?SZ/)) { |
|
868 |
$Relsz = hex((split(' ', $Line))[2]); |
|
869 |
next; |
|
870 |
} |
|
871 |
||
872 |
# Does this file have any plt relocations. If the plt size is |
|
873 |
# equivalent to the total relocation size then we don't have |
|
874 |
# any relocations suitable for combining into a .SUNW_reloc |
|
875 |
# section. |
|
876 |
if (($Pltsz == 0) && ($Line =~ / PLTRELSZ/)) { |
|
877 |
$Pltsz = hex((split(' ', $Line))[2]); |
|
878 |
next; |
|
879 |
} |
|
880 |
||
881 |
# Under the -i (information) option print out any useful dynamic |
|
882 |
# entries. |
|
883 |
# Does this object have any dependencies. |
|
884 |
if ($opt{i} && ($Line =~ /NEEDED/)) { |
|
885 |
my($Need) = (split(' ', $Line))[3]; |
|
886 |
||
887 |
# Catch any old (unnecessary) dependencies. |
|
888 |
if ($Need =~ $OldDeps) { |
|
889 |
OutMsg($Ttl++, $RelPath, |
|
890 |
"\tNEEDED=$Need\t<dependency no longer necessary>"); |
|
891 |
} else { |
|
892 |
OutMsg($Ttl++, $RelPath, "\tNEEDED=$Need"); |
|
893 |
} |
|
894 |
next; |
|
895 |
} |
|
896 |
||
5905 | 897 |
# Is this object built with -B direct flag on? |
898 |
if ($Line =~ / DIRECT /) { |
|
899 |
$HasDirectBinding = 1; |
|
900 |
} |
|
901 |
||
0 | 902 |
# Does this object specify a runpath. |
903 |
if ($opt{i} && ($Line =~ /RPATH/)) { |
|
904 |
my($Rpath) = (split(' ', $Line))[3]; |
|
905 |
OutMsg($Ttl++, $RelPath, "\tRPATH=$Rpath"); |
|
906 |
next; |
|
907 |
} |
|
908 |
} |
|
909 |
||
910 |
# A shared object, that contains non-plt relocations, should have a |
|
911 |
# combined relocation section indicating it was built with -z combreloc. |
|
912 |
if ($Dll && $Relsz && ($Relsz != $Pltsz) && ($Sun == 0)) { |
|
913 |
OutMsg($Ttl++, $RelPath, |
|
914 |
"\tSUNW_reloc section missing\t\t<no -zcombreloc?>"); |
|
915 |
} |
|
916 |
||
917 |
# No objects released to a customer should have any .stabs sections |
|
918 |
# remaining, they should be stripped. |
|
919 |
if ($opt{s} && $Stab) { |
|
920 |
if (!$opt{a}) { |
|
921 |
if ($File =~ $SkipStabFiles) { |
|
922 |
goto DONESTAB; |
|
923 |
} |
|
924 |
} |
|
925 |
OutMsg($Ttl++, $RelPath, |
|
524 | 926 |
"\tdebugging sections should be deleted\t<no strip -x?>"); |
0 | 927 |
} |
928 |
||
5905 | 929 |
# Identify an object that is not built with either -B direct or |
930 |
# -z direct. |
|
931 |
if (($RelPath =~ $SkipDirectBindDirs) || |
|
932 |
($File =~ $SkipDirectBindFiles)) { |
|
933 |
goto DONESTAB; |
|
934 |
} |
|
935 |
if ($Relsz && ($HasDirectBinding == 0)) { |
|
936 |
OutMsg($Ttl++, $RelPath, |
|
937 |
"\tobject has no direct bindings\t<no -B direct or -z direct?>"); |
|
938 |
} |
|
939 |
||
0 | 940 |
DONESTAB: |
941 |
||
524 | 942 |
# All objects should have a full symbol table to provide complete |
0 | 943 |
# debugging stack traces. |
524 | 944 |
if ($Strip) { |
0 | 945 |
OutMsg($Ttl++, $RelPath, |
946 |
"\tsymbol table should not be stripped\t<remove -s?>"); |
|
947 |
} |
|
4292
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
948 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
949 |
# If there are symbol sort sections in this object, report on |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
950 |
# any that have duplicate addresses. |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
951 |
ProcSymSort($FullPath, $RelPath, \$Ttl) if $SymSort; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
952 |
} |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
953 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
954 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
955 |
## ProcSymSortOutMsg(RefTtl, RelPath, secname, addr, names...) |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
956 |
# |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
957 |
# Call OutMsg for a duplicate address error in a symbol sort |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
958 |
# section |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
959 |
# |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
960 |
sub ProcSymSortOutMsg { |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
961 |
my($RefTtl, $RelPath, $secname, $addr, @names) = @_; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
962 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
963 |
OutMsg($$RefTtl++, $RelPath, |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
964 |
"$secname: duplicate $addr: ". join(', ', @names)); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
965 |
} |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
966 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
967 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
968 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
969 |
## ProcSymSort(FullPath, RelPath) |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
970 |
# |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
971 |
# Examine the symbol sort sections for the given object and report |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
972 |
# on any duplicate addresses found. Ideally, mapfile directives |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
973 |
# should be used when building objects that have multiple symbols |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
974 |
# with the same address so that only one of them appears in the sort |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
975 |
# section. This saves space, reduces user confusion, and ensures that |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
976 |
# libproc and debuggers always display public names instead of symbols |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
977 |
# that are merely implementation details. |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
978 |
# |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
979 |
sub ProcSymSort { |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
980 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
981 |
my($FullPath, $RelPath, $RefTtl) = @_; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
982 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
983 |
# If this object is exempt from checking, return quietly |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
984 |
return if ($FullPath =~ $SkipSymSort); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
985 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
986 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
987 |
open(SORT, "elfdump -S $FullPath|") || |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
988 |
die "$Prog: Unable to execute elfdump (symbol sort sections)\n"; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
989 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
990 |
my $line; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
991 |
my $last_addr; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
992 |
my @dups = (); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
993 |
my $secname; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
994 |
while ($line = <SORT>) { |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
995 |
chomp $line; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
996 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
997 |
next if ($line eq ''); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
998 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
999 |
# If this is a header line, pick up the section name |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1000 |
if ($line =~ /^Symbol Sort Section:\s+([^\s]+)\s+/) { |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1001 |
$secname = $1; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1002 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1003 |
# Every new section is followed by a column header line |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1004 |
$line = <SORT>; # Toss header line |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1005 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1006 |
# Flush anything left from previous section |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1007 |
ProcSymSortOutMsg($RefTtl, $RelPath, $secname, |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1008 |
$last_addr, @dups) if (scalar(@dups) > 1); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1009 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1010 |
# Reset variables for new sort section |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1011 |
$last_addr = ''; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1012 |
@dups = (); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1013 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1014 |
next; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1015 |
} |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1016 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1017 |
# Process symbol line |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1018 |
my @fields = split /\s+/, $line; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1019 |
my $new_addr = $fields[2]; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1020 |
my $new_name = $fields[9]; |
4388
7a8ef1852d04
6565305 check_rtime should ignore DTrace USDT symbols in sort section test
ab196087
parents:
4306
diff
changeset
|
1021 |
|
6239
88a5439d4722
6565300 ld should exclude hidden USDT provider probe symbols from symbol sort sections
ab196087
parents:
5905
diff
changeset
|
1022 |
if ($new_addr eq $last_addr) { |
4292
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1023 |
push @dups, $new_name; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1024 |
} else { |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1025 |
ProcSymSortOutMsg($RefTtl, $RelPath, $secname, |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1026 |
$last_addr, @dups) if (scalar(@dups) > 1); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1027 |
@dups = ( $new_name ); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1028 |
$last_addr = $new_addr; |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1029 |
} |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1030 |
} |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1031 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1032 |
ProcSymSortOutMsg($RefTtl, $RelPath, $secname, $last_addr, @dups) |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1033 |
if (scalar(@dups) > 1); |
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1034 |
|
d7beef35913b
6518331 Eliminate duplicate addresses from ON ELF symbol sort sections
ab196087
parents:
3967
diff
changeset
|
1035 |
close SORT; |
0 | 1036 |
} |
1037 |
||
1038 |
||
1039 |
sub ProcDir { |
|
1040 |
my($FullDir, $RelDir) = @_; |
|
1041 |
my($NewFull, $NewRel); |
|
1042 |
||
1043 |
# Determine if this is a directory we don't care about. |
|
1044 |
if (!$opt{a}) { |
|
1045 |
if ($RelDir =~ $SkipDirs) { |
|
1046 |
return; |
|
1047 |
} |
|
1048 |
} |
|
1049 |
||
1050 |
# Open the directory and read each entry, omit files starting with "." |
|
1051 |
if (opendir(DIR, $FullDir)) { |
|
1052 |
foreach my $Entry (readdir(DIR)) { |
|
1053 |
if ($Entry =~ /^\./) { |
|
1054 |
next; |
|
1055 |
} |
|
1056 |
$NewFull = "$FullDir/$Entry"; |
|
1057 |
||
1058 |
# Ignore symlinks. |
|
1059 |
if (-l $NewFull) { |
|
1060 |
next; |
|
1061 |
} |
|
1062 |
if (!stat($NewFull)) { |
|
1063 |
next; |
|
1064 |
} |
|
1065 |
$NewRel = "$RelDir/$Entry"; |
|
1066 |
||
1067 |
# Descend into and process any directories. |
|
1068 |
if (-d _) { |
|
1069 |
ProcDir($NewFull, $NewRel); |
|
1070 |
next; |
|
1071 |
} |
|
1072 |
||
1073 |
# Typically dynamic objects are executable, so we can |
|
1074 |
# reduce the overall cost of this script (a lot!) by |
|
1075 |
# screening out non-executables here, rather than pass |
|
1076 |
# them to file(1) later. However, it has been known |
|
1077 |
# for shared objects to be mistakenly left non- |
|
1078 |
# executable, so with -a let all files through so that |
|
1079 |
# this requirement can be verified (see ProcFile()). |
|
1080 |
if (!$opt{a}) { |
|
1081 |
if (! -x _) { |
|
1082 |
next; |
|
1083 |
} |
|
1084 |
} |
|
1085 |
||
1086 |
# Process any standard files. |
|
1087 |
if (-f _) { |
|
1088 |
my($Secure) = 0; |
|
1089 |
||
1090 |
if (-u _ || -g _) { |
|
1091 |
$Secure = 1; |
|
1092 |
} |
|
1093 |
||
1094 |
ProcFile($NewFull, $NewRel, $Entry, $Secure); |
|
1095 |
next; |
|
1096 |
} |
|
1097 |
||
1098 |
} |
|
1099 |
closedir(DIR); |
|
1100 |
} |
|
1101 |
} |
|
1102 |
||
1103 |
# Create a crle(1) script for any 64-bit dependencies we locate. A runtime |
|
1104 |
# configuration file will be generated to establish alternative dependency |
|
1105 |
# mappings for all these dependencies. |
|
1106 |
||
1107 |
sub Entercrle64 { |
|
1108 |
my($FullDir, $RelDir, $Entry) = @_; |
|
1109 |
||
1110 |
if (!$Crle64) { |
|
1111 |
# Create and initialize the script if is doesn't already exit. |
|
1112 |
||
1113 |
$Crle64 = "$Tmpdir/$Prog.crle64.$$"; |
|
1114 |
open(CRLE64, "> $Crle64") || |
|
1115 |
die "$Prog: open failed: $Crle64: $!"; |
|
1116 |
||
1117 |
print CRLE64 "#!/bin/sh\ncrle -64\\\n"; |
|
1118 |
} |
|
1119 |
print CRLE64 "\t-o $FullDir -a $RelDir/$Entry \\\n"; |
|
1120 |
} |
|
1121 |
||
1122 |
# Create a crle(1) script for any 32-bit dependencies we locate. A runtime |
|
1123 |
# configuration file will be generated to establish alternative dependency |
|
1124 |
# mappings for all these dependencies. |
|
1125 |
||
1126 |
sub Entercrle32 { |
|
1127 |
my($FullDir, $RelDir, $Entry) = @_; |
|
1128 |
||
1129 |
if (!$Crle32) { |
|
1130 |
# Create and initialize the script if is doesn't already exit. |
|
1131 |
||
1132 |
$Crle32 = "$Tmpdir/$Prog.crle32.$$"; |
|
1133 |
open(CRLE32, "> $Crle32") || |
|
1134 |
die "$Prog: open failed: $Crle32: $!"; |
|
1135 |
||
1136 |
print CRLE32 "#!/bin/sh\ncrle \\\n"; |
|
1137 |
} |
|
1138 |
print CRLE32 "\t-o $FullDir -a $RelDir/$Entry \\\n"; |
|
1139 |
} |
|
1140 |
||
1141 |
# Having finished gathering dependencies, complete any crle(1) scripts and |
|
1142 |
# execute them to generate the associated runtime configuration files. In |
|
1143 |
# addition establish the environment variable required to pass the configuration |
|
1144 |
# files to ldd(1). |
|
1145 |
||
1146 |
sub GenConf { |
|
1147 |
if ($Crle64) { |
|
1148 |
$Conf64 = "$Tmpdir/$Prog.conf64.$$"; |
|
1149 |
print CRLE64 "\t-c $Conf64\n"; |
|
1150 |
||
1151 |
chmod 0755, $Crle64; |
|
1152 |
close CRLE64; |
|
1153 |
||
1154 |
if (system($Crle64)) { |
|
1155 |
undef $Conf64; |
|
1156 |
} |
|
1157 |
} |
|
1158 |
if ($Crle32) { |
|
1159 |
$Conf32 = "$Tmpdir/$Prog.conf32.$$"; |
|
1160 |
print CRLE32 "\t-c $Conf32\n"; |
|
1161 |
||
1162 |
chmod 0755, $Crle32; |
|
1163 |
close CRLE32; |
|
1164 |
||
1165 |
if (system($Crle32)) { |
|
1166 |
undef $Conf32; |
|
1167 |
} |
|
1168 |
} |
|
1169 |
||
1170 |
if ($Crle64 && $Conf64 && $Crle32 && $Conf32) { |
|
1171 |
$Env = "-e LD_FLAGS=config_64=$Conf64,config_32=$Conf32"; |
|
1172 |
} elsif ($Crle64 && $Conf64) { |
|
1173 |
$Env = "-e LD_FLAGS=config_64=$Conf64"; |
|
1174 |
} elsif ($Crle32 && $Conf32) { |
|
1175 |
$Env = "-e LD_FLAGS=config_32=$Conf32"; |
|
1176 |
} |
|
1177 |
} |
|
1178 |
||
1179 |
# Recurse through a directory hierarchy looking for appropriate dependencies. |
|
1180 |
||
1181 |
sub GetDeps { |
|
1182 |
my($FullDir, $RelDir) = @_; |
|
1183 |
my($NewFull); |
|
1184 |
||
1185 |
# Open the directory and read each entry, omit files starting with "." |
|
1186 |
if (opendir(DIR, $FullDir)) { |
|
1187 |
foreach my $Entry (readdir(DIR)) { |
|
1188 |
if ($Entry =~ /^\./) { |
|
1189 |
next; |
|
1190 |
} |
|
1191 |
$NewFull = "$FullDir/$Entry"; |
|
1192 |
||
1193 |
# We need to follow links so that any dependencies |
|
1194 |
# are expressed in all their available forms. |
|
1195 |
# Bail on symlinks like 32 -> . |
|
1196 |
if (-l $NewFull) { |
|
1197 |
if (readlink($NewFull) =~ /^\.$/) { |
|
1198 |
next; |
|
1199 |
} |
|
1200 |
} |
|
1201 |
if (!stat($NewFull)) { |
|
1202 |
next; |
|
1203 |
} |
|
1204 |
||
3967
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
1205 |
if (!$opt{a}) { |
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
1206 |
if ($NewFull =~ $SkipCrleConf) { |
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
1207 |
next; |
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
1208 |
} |
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
1209 |
} |
390705455279
6542674 check_rtime generates false unused messages for libc.so.1/libc_hwcap.so
rie
parents:
2912
diff
changeset
|
1210 |
|
0 | 1211 |
# If this is a directory descend into it. |
1212 |
if (-d _) { |
|
1213 |
my($NewRel); |
|
1214 |
||
1215 |
if ($RelDir =~ /^\/$/) { |
|
1216 |
$NewRel = "$RelDir$Entry"; |
|
1217 |
} else { |
|
1218 |
$NewRel = "$RelDir/$Entry"; |
|
1219 |
} |
|
1220 |
||
1221 |
GetDeps($NewFull, $NewRel); |
|
1222 |
next; |
|
1223 |
} |
|
1224 |
||
1225 |
# If this is a regular file determine if its a |
|
1226 |
# valid ELF dependency. |
|
1227 |
if (-f _) { |
|
1228 |
my($File); |
|
1229 |
||
1230 |
# Typically shared object dependencies end with |
|
1231 |
# ".so" or ".so.?", hence we can reduce the cost |
|
1232 |
# of this script (a lot!) by screening out files |
|
1233 |
# that don't follow this pattern. |
|
1234 |
if (!$opt{a}) { |
|
1235 |
if ($Entry !~ /\.so(?:\.\d+)*$/) { |
|
1236 |
next; |
|
1237 |
} |
|
1238 |
} |
|
1239 |
||
1240 |
$File = `file $NewFull`; |
|
1241 |
if ($File !~ /dynamic lib/) { |
|
1242 |
next; |
|
1243 |
} |
|
1244 |
||
1245 |
if ($File =~ /32-bit/) { |
|
1246 |
Entercrle32($FullDir, $RelDir, $Entry); |
|
1247 |
} elsif ($Ena64) { |
|
1248 |
Entercrle64($FullDir, $RelDir, $Entry); |
|
1249 |
} |
|
1250 |
next; |
|
1251 |
} |
|
1252 |
} |
|
1253 |
closedir(DIR); |
|
1254 |
} |
|
1255 |
} |
|
1256 |
exit $Error |