380aaf2d2c
command-line setting. * cygwin.din: Export sexec* functions as function which returns ENOSYS (i.e., sexec* is deprecated). * dtable.cc (dtable::vfork_child_dup): Ensure that impersonation is restored even on failure. * exec.cc: Throughout, remove references to sexec* and _spawnve. * pinfo.h: Remove _spawnve declaration. * spawn.cc: Rename _spawnve to spawnve and use throughout. (spawn_guts): Eliminate hToken argument and processing of same. Just perform special actions if impersonating. (spawnve): Rename from _spawnve.
99 lines
2 KiB
C++
99 lines
2 KiB
C++
/* exec.cc: exec system call support.
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Copyright 1996, 1997, 1998, 2000, 2001, 2002 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <process.h>
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#include "perprocess.h"
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#include "security.h"
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#include "fhandler.h"
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#include "path.h"
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#include "pinfo.h"
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#include "environ.h"
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#include "cygerrno.h"
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/* This is called _execve and not execve because the real execve is defined
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in libc/posix/execve.c. It calls us. */
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extern "C" int
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_execve (const char *path, char *const argv[], char *const envp[])
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{
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static char *const empty_env[] = { 0 };
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MALLOC_CHECK;
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if (!envp)
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envp = empty_env;
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return spawnve (_P_OVERLAY, path, argv, envp);
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}
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extern "C" int
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execl (const char *path, const char *arg0, ...)
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{
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int i;
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va_list args;
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const char *argv[1024];
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va_start (args, arg0);
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argv[0] = arg0;
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i = 1;
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do
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argv[i] = va_arg (args, const char *);
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while (argv[i++] != NULL);
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va_end (args);
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MALLOC_CHECK;
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return _execve (path, (char * const *) argv, cur_environ ());
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}
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extern "C" int
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execv (const char *path, char * const *argv)
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{
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MALLOC_CHECK;
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return _execve (path, (char * const *) argv, cur_environ ());
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}
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extern "C" pid_t
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sexecve_is_bad ()
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{
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set_errno (ENOSYS);
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return 0;
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}
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/*
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* Copy string, until c or <nul> is encountered.
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* NUL-terminate the destination string (s1).
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* Return pointer to terminating byte in dst string.
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*/
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char * __stdcall
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strccpy (char *s1, const char **s2, char c)
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{
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while (**s2 && **s2 != c)
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*s1++ = *((*s2)++);
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*s1 = 0;
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MALLOC_CHECK;
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return s1;
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}
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extern "C" int
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execvp (const char *path, char * const *argv)
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{
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path_conv buf;
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return execv (find_exec (path, buf), argv);
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}
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extern "C" int
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execvpe (const char *path, char * const *argv, char *const *envp)
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{
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path_conv buf;
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return execve (find_exec (path, buf), argv, envp);
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}
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