mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 01:00:07 +00:00
57b47af94b
2005-01-20 Ulrich Drepper <drepper@redhat.com> * posix/execl.c: Do not allocate potentially large buffers on the stack. * posix/execle.c: Likewise. * posix/execlp.c: Likewise. * posix/execlp.c: Likewise. (script_execute): Removed. (allocate_scripts_argv): New function. Called at most once to allocate memory, not every time a script is run. Adjust caller. * sysdeps/generic/wordexp.c (exec_comm): Add a few TEMP_FAILURE_RETRY. Reorganize code to avoid multiple calls to exec_comm_child. (exec_comm_child): Can now be inlined. * posix/Makefile: Add -fomit-frame-pointer for a few more files. * stdlib/Makefile: Likewise.
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/* Copyright (C) 1991,97,98,99,2002,2005 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <stackinfo.h>
|
|
|
|
/* Execute PATH with all arguments after PATH until a NULL pointer,
|
|
and the argument after that for environment. */
|
|
int
|
|
execle (const char *path, const char *arg, ...)
|
|
{
|
|
#define INITIAL_ARGV_MAX 1024
|
|
size_t argv_max = INITIAL_ARGV_MAX;
|
|
const char *initial_argv[INITIAL_ARGV_MAX];
|
|
const char **argv = initial_argv;
|
|
va_list args;
|
|
argv[0] = arg;
|
|
|
|
va_start (args, arg);
|
|
unsigned int i = 0;
|
|
while (argv[i++] != NULL)
|
|
{
|
|
if (i == argv_max)
|
|
{
|
|
argv_max *= 2;
|
|
const char **nptr = realloc (argv == initial_argv ? NULL : argv,
|
|
argv_max * sizeof (const char *));
|
|
if (nptr == NULL)
|
|
{
|
|
if (argv != initial_argv)
|
|
free (argv);
|
|
return -1;
|
|
}
|
|
if (argv == initial_argv)
|
|
/* We have to copy the already filled-in data ourselves. */
|
|
memcpy (nptr, argv, i * sizeof (const char *));
|
|
|
|
argv = nptr;
|
|
}
|
|
|
|
argv[i] = va_arg (args, const char *);
|
|
}
|
|
|
|
const char *const *envp = va_arg (args, const char *const *);
|
|
va_end (args);
|
|
|
|
int ret = __execve (path, (char *const *) argv, (char *const *) envp);
|
|
if (argv != initial_argv)
|
|
free (argv);
|
|
|
|
return ret;
|
|
}
|
|
libc_hidden_def (execle)
|