1 /* execv() function: Execute a program, replacing the current process.
2 Copyright (C) 2020-2021 Free Software Foundation, Inc.
3
4 This file is free software: you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation; either version 2.1 of the
7 License, or (at your option) any later version.
8
9 This file 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
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 /* Written by Bruno Haible <bruno@clisp.org>, 2020. */
18
19 #include <config.h>
20
21 /* Specification. */
22 #include <unistd.h>
23
24 int
execv(const char * program,char * const * argv)25 execv (const char *program, char * const *argv)
26 {
27 /* Pass the environment explicitly. This is needed if the program has
28 modified the environment using putenv() or [un]setenv(). On Windows,
29 processes have two environments, one in the "environment block" of the
30 process and managed through SetEnvironmentVariable(), and one inside the
31 process, in the location retrieved by the 'environ' macro. If we were
32 to pass NULL, the child process would inherit a copy of the environment
33 block - ignoring the effects of putenv() and [un]setenv(). */
34 return execve (program, argv, environ);
35 }
36