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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, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* 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 2004 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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#ifndef _SYS_EXEC_H
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#define _SYS_EXEC_H
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#pragma ident "%Z%%M% %I% %E% SMI"
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#include <sys/systm.h>
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#include <vm/seg.h>
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#include <vm/seg_vn.h>
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#include <sys/model.h>
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#include <sys/uio.h>
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#include <sys/corectl.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Number of bytes to read for magic string
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*/
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#define MAGIC_BYTES 8
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#define getexmag(x) (((x)[0] << 8) + (x)[1])
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typedef struct execa {
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const char *fname;
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const char **argp;
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const char **envp;
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} execa_t;
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typedef struct execenv {
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caddr_t ex_bssbase;
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caddr_t ex_brkbase;
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size_t ex_brksize;
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vnode_t *ex_vp;
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short ex_magic;
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} execenv_t;
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#ifdef _KERNEL
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#define LOADABLE_EXEC(e) ((e)->exec_lock)
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#define LOADED_EXEC(e) ((e)->exec_func)
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extern int nexectype; /* number of elements in execsw */
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extern struct execsw execsw[];
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extern kmutex_t execsw_lock;
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/*
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* User argument structure for passing exec information around between the
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* common and machine-dependent portions of exec and the exec modules.
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*/
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typedef struct uarg {
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ssize_t na;
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ssize_t ne;
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ssize_t nc;
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ssize_t arglen;
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char *fname;
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char *pathname;
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ssize_t auxsize;
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caddr_t stackend;
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size_t stk_align;
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size_t stk_size;
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char *stk_base;
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char *stk_strp;
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int *stk_offp;
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size_t usrstack_size;
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uint_t stk_prot;
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uint_t dat_prot;
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int traceinval;
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model_t to_model;
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model_t from_model;
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size_t to_ptrsize;
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size_t from_ptrsize;
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size_t ncargs;
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struct execsw *execswp;
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uint_t stkpageszc;
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uint_t brkpageszc;
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uintptr_t entry;
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uintptr_t thrptr;
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} uarg_t;
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/*
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* The following macro is a machine dependent encapsulation of
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* postfix processing to hide the stack direction from elf.c
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* thereby making the elf.c code machine independent.
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*/
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#define execpoststack(ARGS, ARRAYADDR, BYTESIZE) \
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(copyout((caddr_t)(ARRAYADDR), (ARGS)->stackend, (BYTESIZE)) ? EFAULT \
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: (((ARGS)->stackend += (BYTESIZE)), 0))
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/*
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* This provides the current user stack address for an object of size BYTESIZE.
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* Used to determine the stack address just before applying execpoststack().
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*/
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#define stackaddress(ARGS, BYTESIZE) ((ARGS)->stackend)
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/*
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* Macro to add attribute/values the aux vector under construction.
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*/
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/* BEGIN CSTYLED */
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#if ((_LONG_ALIGNMENT == (2 * _INT_ALIGNMENT)) || \
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(_POINTER_ALIGNMENT == (2 * _INT_ALIGNMENT)))
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/* END CSTYLED */
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/*
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* This convoluted stuff is necessitated by the fact that there is
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* potential padding in the aux vector, but not necessarily and
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* without clearing the padding there is a small, but potential
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* security hole.
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*/
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#define ADDAUX(p, a, v) { \
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(&(p)->a_type)[1] = 0; \
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(p)->a_type = (a); \
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(p)->a_un.a_val = (v); \
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++(p); \
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}
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#else
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#define ADDAUX(p, a, v) { \
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(p)->a_type = (a); \
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((p)++)->a_un.a_val = (v); \
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}
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#endif
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#define INTPSZ MAXPATHLEN
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typedef struct intpdata {
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char *intp;
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char *intp_name;
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char *intp_arg;
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} intpdata_t;
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struct execsw {
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char *exec_magic;
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int exec_magoff;
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int exec_maglen;
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int (*exec_func)(struct vnode *vp, struct execa *uap,
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struct uarg *args, struct intpdata *idata, int level,
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long *execsz, int setid, caddr_t exec_file,
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struct cred *cred);
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int (*exec_core)(struct vnode *vp, struct proc *p,
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struct cred *cred, rlim64_t rlimit, int sig,
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core_content_t content);
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krwlock_t *exec_lock;
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};
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extern short elfmagic;
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extern short intpmagic;
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extern short javamagic;
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#if defined(__sparc)
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extern short aout_zmagic;
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extern short aout_nmagic;
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extern short aout_omagic;
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#endif
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extern short nomagic;
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extern char elf32magicstr[];
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extern char elf64magicstr[];
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extern char intpmagicstr[];
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extern char javamagicstr[];
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#if defined(__sparc)
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extern char aout_nmagicstr[];
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extern char aout_zmagicstr[];
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extern char aout_omagicstr[];
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#endif
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extern char nomagicstr[];
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extern int exec_args(execa_t *, uarg_t *, intpdata_t *, void **);
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extern int exec(const char *fname, const char **argp);
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extern int exece(const char *fname, const char **argp, const char **envp);
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extern int exec_common(const char *fname, const char **argp,
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const char **envp);
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extern int gexec(vnode_t **vp, struct execa *uap, struct uarg *args,
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struct intpdata *idata, int level, long *execsz, caddr_t exec_file,
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struct cred *cred);
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extern struct execsw *allocate_execsw(char *name, char *magic,
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size_t magic_size);
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extern struct execsw *findexecsw(char *magic);
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extern struct execsw *findexec_by_hdr(char *header);
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extern struct execsw *findexec_by_magic(char *magic);
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extern int execpermissions(struct vnode *vp, struct vattr *vattrp,
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struct uarg *args);
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extern int execmap(vnode_t *vp, caddr_t addr, size_t len, size_t zfodlen,
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off_t offset, int prot, int page, uint_t);
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extern void setexecenv(struct execenv *ep);
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extern int execopen(struct vnode **vpp, int *fdp);
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extern int execclose(int fd);
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extern void setregs(uarg_t *);
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extern void exec_set_sp(size_t);
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/*
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* Utility functions for exec module core routines:
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*/
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extern int core_seg(proc_t *, vnode_t *, offset_t, caddr_t,
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size_t, rlim64_t, cred_t *);
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extern int core_write(vnode_t *, enum uio_seg, offset_t,
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const void *, size_t, rlim64_t, cred_t *);
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/* a.out stuff */
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struct exec;
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extern caddr_t gettmem(struct exec *exp);
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extern caddr_t getdmem(struct exec *exp);
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extern ulong_t getdfile(struct exec *exp);
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extern uint_t gettfile(struct exec *exp);
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extern int chkaout(struct exdata *exp);
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extern void getexinfo(struct exdata *edp_in, struct exdata *edp_out,
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int *pagetext, int *pagedata);
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#endif /* _KERNEL */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_EXEC_H */
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