Mercurial > gnulib
view tests/test-popen-safer.c @ 40245:eeb8fe2e91ad
autoupdate
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sun, 17 Mar 2019 16:29:28 -0700 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* Test of opening a subcommand stream. Copyright (C) 2009-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* Written by Eric Blake <ebb9@byu.net>, 2009. */ #include <config.h> /* Specification. */ #include "stdio--.h" /* Helpers. */ #include <sys/wait.h> #include <unistd.h> /* This test intentionally closes stderr. So, we arrange to have fd 10 (outside the range of interesting fd's during the test) set up to duplicate the original stderr. */ #define BACKUP_STDERR_FILENO 10 #define ASSERT_STREAM myerr #include "macros.h" static FILE *myerr; int main (int argc, char **argv) { FILE *fp; int status; /* We close fd 2 later, so save it in fd 10. */ if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL) return 2; ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); ASSERT (fclose (stdin) == 0); ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); ASSERT (fclose (stdout) == 0); ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); ASSERT (fclose (stderr) == 0); ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); return 0; }