1 /* Copyright (C) 1991,92,94,97,98,99,2002,2005 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
24 #include <stackinfo.h>
27 /* Execute PATH with all arguments after PATH until
28 a NULL pointer and environment from `environ'. */
30 execl (const char *path, const char *arg, ...)
32 #define INITIAL_ARGV_MAX 1024
33 size_t argv_max = INITIAL_ARGV_MAX;
34 const char *initial_argv[INITIAL_ARGV_MAX];
35 const char **argv = initial_argv;
42 while (argv[i++] != NULL)
47 const char **nptr = realloc (argv == initial_argv ? NULL : argv,
48 argv_max * sizeof (const char *));
51 if (argv != initial_argv)
55 if (argv == initial_argv)
56 /* We have to copy the already filled-in data ourselves. */
57 memcpy (nptr, argv, i * sizeof (const char *));
62 argv[i] = va_arg (args, const char *);
66 int ret = __execve (path, (char *const *) argv, __environ);
67 if (argv != initial_argv)
72 libc_hidden_def (execl)