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59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* execvpe() function: Execute a program, replacing the current process.
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Copyright (C) 2020-2025 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2020. */
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/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise gcc
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may optimize away the program == NULL and argv == NULL tests below. */
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#define _GL_ARG_NONNULL(params)
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#include <config.h>
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/* Specification. */
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "findprog.h"
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int
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execvpe (const char *program, char * const *argv, char * const *env)
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{
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if (program == NULL
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|| argv == NULL
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/* The callee is not expecting a NULL argv[0]. */
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|| argv[0] == NULL
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|| env == NULL)
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{
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errno = EINVAL;
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return -1;
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}
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const char *resolved_progname =
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find_in_given_path (program, getenv ("PATH"), NULL, true);
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if (resolved_progname == NULL)
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return -1;
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/* Invoke execve. */
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execve (resolved_progname, argv, env);
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/* If execve returned, it must have failed. */
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if (resolved_progname != program)
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free ((char *) resolved_progname);
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return -1;
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}
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