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/* libguestfs
* Copyright (C) 2013 Red Hat 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Test the guestunmount --fd flag. Note this is done without
* requiring libguestfs or guestmount.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <error.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "cloexec.h"
#include "ignore-value.h"
#include "guestfs.h"
#include "guestfs-utils.h"
int
main (int argc, char *argv[])
{
char *skip;
int pipefd[2];
pid_t pid;
int r, status;
/* Allow the test to be skipped. */
skip = getenv ("SKIP_TEST_FUSE_SH");
if (skip && guestfs_int_is_true (skip) > 0)
error (77, 0, "test skipped because environment variable set");
skip = getenv ("SKIP_TEST_GUESTUNMOUNT_FD");
if (skip && guestfs_int_is_true (skip) > 0)
error (77, 0, "test skipped because environment variable set");
/* Create the pipe. */
if (pipe (pipefd) == -1)
error (EXIT_FAILURE, errno, "pipe");
/* Create the guestunmount subprocess. */
pid = fork ();
if (pid == -1)
error (EXIT_FAILURE, errno, "fork");
if (pid == 0) { /* child - guestunmount */
char fd_str[64];
close (pipefd[1]);
snprintf (fd_str, sizeof fd_str, "%d", pipefd[0]);
execlp ("guestunmount", "guestunmount", "--fd", fd_str, "/", NULL);
perror ("execlp");
_exit (EXIT_FAILURE);
}
/* Parent continues. */
close (pipefd[0]);
ignore_value (set_cloexec_flag (pipefd[1], 1));
/* Sleep a bit and test that the guestunmount process is still running. */
sleep (2);
r = waitpid (pid, &status, WNOHANG);
if (r == -1)
error (EXIT_FAILURE, errno, "waitpid");
if (r != 0) {
char status_string[80];
error (EXIT_FAILURE, 0,
"test failed: %s",
guestfs_int_exit_status_to_string (r, "guestunmount",
status_string,
sizeof status_string));
}
/* Close the write side of the pipe. This should cause guestunmount
* to exit. It should exit with status code _3_ because we gave it
* a directory which isn't a FUSE mountpoint.
*/
close (pipefd[1]);
r = waitpid (pid, &status, 0);
if (r == -1)
error (EXIT_FAILURE, errno, "waitpid");
if (!WIFEXITED (status) || WEXITSTATUS (status) != 3) {
char status_string[80];
error (EXIT_FAILURE, 0,
"test failed: guestunmount didn't return status code 3; %s",
guestfs_int_exit_status_to_string (status, "guestunmount",
status_string,
sizeof status_string));
}
exit (EXIT_SUCCESS);
}
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