diff options
Diffstat (limited to 'posix/tst-spawn3.c')
| -rw-r--r-- | posix/tst-spawn3.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/posix/tst-spawn3.c b/posix/tst-spawn3.c deleted file mode 100644 index 8577b03d01..0000000000 --- a/posix/tst-spawn3.c +++ /dev/null @@ -1,189 +0,0 @@ -/* Check posix_spawn add file actions. - Copyright (C) 2016-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <stdio.h> -#include <spawn.h> -#include <error.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <sys/wait.h> -#include <sys/resource.h> - -static int do_test (void); -#define TEST_FUNCTION do_test () -#include <test-skeleton.c> - -static int -do_test (void) -{ - /* The test checks if posix_spawn open file action close the file descriptor - before opening a new one in case the input file descriptor is already - opened. It does by exhausting all file descriptors on the process before - issue posix_spawn. It then issues a posix_spawn for '/bin/sh echo $$' - and add two rules: - - 1. Redirect stdout to a temporary filepath - 2. Redirect stderr to stdout - - If the implementation does not close the file 1. will fail with - EMFILE. */ - - struct rlimit rl; - int max_fd = 24; - - /* Set maximum number of file descriptor to a low value to avoid open - too many files in environments where RLIMIT_NOFILE is large and to - limit the array size to track the opened file descriptors. */ - - if (getrlimit (RLIMIT_NOFILE, &rl) == -1) - { - printf ("error: getrlimit RLIMIT_NOFILE failed"); - exit (EXIT_FAILURE); - } - - max_fd = (rl.rlim_cur < max_fd ? rl.rlim_cur : max_fd); - rl.rlim_cur = max_fd; - - if (setrlimit (RLIMIT_NOFILE, &rl) == 1) - { - printf ("error: setrlimit RLIMIT_NOFILE to %u failed", max_fd); - exit (EXIT_FAILURE); - } - - /* Exhauste the file descriptor limit with temporary files. */ - int files[max_fd]; - int nfiles = 0; - for (;;) - { - int fd = create_temp_file ("tst-spawn3.", NULL); - if (fd == -1) - { - if (errno != EMFILE) - { - printf ("error: create_temp_file returned -1 with " - "errno != EMFILE\n"); - exit (EXIT_FAILURE); - } - break; - } - files[nfiles++] = fd; - } - - posix_spawn_file_actions_t a; - if (posix_spawn_file_actions_init (&a) != 0) - { - puts ("error: spawn_file_actions_init failed"); - exit (EXIT_FAILURE); - } - - /* Executes a /bin/sh echo $$ 2>&1 > /tmp/tst-spawn3.pid . */ - const char pidfile[] = "/tmp/tst-spawn3.pid"; - if (posix_spawn_file_actions_addopen (&a, STDOUT_FILENO, pidfile, O_WRONLY | - O_CREAT | O_TRUNC, 0644) != 0) - { - puts ("error: spawn_file_actions_addopen failed"); - exit (EXIT_FAILURE); - } - - if (posix_spawn_file_actions_adddup2 (&a, STDOUT_FILENO, STDERR_FILENO) != 0) - { - puts ("error: spawn_file_actions_addclose"); - exit (EXIT_FAILURE); - } - - /* Since execve (called by posix_spawn) might require to open files to - actually execute the shell script, setup to close the temporary file - descriptors. */ - for (int i=0; i<nfiles; i++) - { - if (posix_spawn_file_actions_addclose (&a, files[i])) - { - printf ("error: posix_spawn_file_actions_addclose failed"); - exit (EXIT_FAILURE); - } - } - - char *spawn_argv[] = { (char *) _PATH_BSHELL, (char *) "-c", - (char *) "echo $$", NULL }; - pid_t pid; - if (posix_spawn (&pid, _PATH_BSHELL, &a, NULL, spawn_argv, NULL) != 0) - { - puts ("error: posix_spawn failed"); - exit (EXIT_FAILURE); - } - - int status; - int err = waitpid (pid, &status, 0); - if (err != pid) - { - puts ("error: waitpid failed"); - exit (EXIT_FAILURE); - } - - /* Close the temporary files descriptor so it can check posix_spawn - output. */ - for (int i=0; i<nfiles; i++) - { - if (close (files[i])) - { - printf ("error: close failed\n"); - exit (EXIT_FAILURE); - } - } - - int pidfd = open (pidfile, O_RDONLY); - if (pidfd == -1) - { - printf ("error: open pidfile failed\n"); - exit (EXIT_FAILURE); - } - - char buf[64]; - ssize_t n; - if ((n = read (pidfd, buf, sizeof (buf))) < 0) - { - printf ("error: read pidfile failed\n"); - exit (EXIT_FAILURE); - } - - unlink (pidfile); - - /* We only expect to read the PID. */ - char *endp; - long int rpid = strtol (buf, &endp, 10); - if (*endp != '\n') - { - printf ("error: didn't parse whole line: \"%s\"\n", buf); - exit (EXIT_FAILURE); - } - if (endp == buf) - { - puts ("error: read empty line"); - exit (EXIT_FAILURE); - } - - if (rpid != pid) - { - printf ("error: found \"%s\", expected PID %ld\n", buf, (long int) pid); - exit (EXIT_FAILURE); - } - - return 0; -} |