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59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <unistd.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <sys/param.h>
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#include <stddef.h>
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/* Execute FILE, searching in the `PATH' environment variable if
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it contains no slashes, with all arguments after FILE until a
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NULL pointer and environment from `environ'. */
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int
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execlp (const char *file, const char *arg, ...)
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{
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ptrdiff_t argc;
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va_list ap;
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va_start (ap, arg);
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for (argc = 1; va_arg (ap, const char *); argc++)
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{
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if (argc == INT_MAX)
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{
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va_end (ap);
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errno = E2BIG;
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return -1;
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}
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}
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va_end (ap);
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/* Although posix does not state execlp as an async-safe function
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it can not use malloc to allocate the arguments since it might
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be used in a vfork scenario and it may lead to malloc internal
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bad state. */
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ptrdiff_t i;
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char *argv[argc + 1];
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va_start (ap, arg);
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argv[0] = (char *) arg;
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for (i = 1; i <= argc; i++)
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argv[i] = va_arg (ap, char *);
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va_end (ap);
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return __execvpe (file, argv, __environ);
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}
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libc_hidden_def (execlp)
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