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https://github.com/libguestfs/libguestfs.git
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5cafedaa45
The gnulib 'error' module uses 'program_name'. On some platforms -- but not Linux / glibc -- it references it as: extern char *program_name; This means when you compile libguestfs on non-glibc (eg. Mac OS X) gnulib requires 'program_name' as an external string reference, which we don't provide. This change doesn't define this string reference for gnulib, but it does change the name of the macro we use to avoid conflicts if we eventually need to export 'program_name' as a string. Thanks: Margaret Lewicka
117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/* libguestfs
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* Copyright (C) 2013 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/* Test the guestunmount --fd flag. Note this is done without
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* requiring libguestfs or guestmount.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "ignore-value.h"
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#include "guestfs.h"
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#include "guestfs-internal-frontend.h"
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int
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main (int argc, char *argv[])
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{
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int pipefd[2];
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pid_t pid;
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int r, status;
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/* Create the pipe. */
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if (pipe (pipefd) == -1) {
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perror ("pipe");
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exit (EXIT_FAILURE);
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}
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/* Create the guestunmount subprocess. */
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pid = fork ();
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if (pid == -1) {
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perror ("fork");
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exit (EXIT_FAILURE);
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}
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if (pid == 0) { /* child - guestunmount */
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char fd_str[64];
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close (pipefd[1]);
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snprintf (fd_str, sizeof fd_str, "%d", pipefd[0]);
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execlp ("./guestunmount", "guestunmount", "--fd", fd_str, "/", NULL);
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perror ("execlp");
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_exit (EXIT_FAILURE);
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}
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/* Parent continues. */
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close (pipefd[0]);
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ignore_value (fcntl (pipefd[1], F_SETFD, FD_CLOEXEC));
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/* Sleep a bit and test that the guestunmount process is still running. */
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sleep (2);
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r = waitpid (pid, &status, WNOHANG);
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if (r == -1) {
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perror ("waitpid");
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exit (EXIT_FAILURE);
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}
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if (r != 0) {
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char status_string[80];
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fprintf (stderr, "%s: test failed: %s\n", guestfs___program_name,
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guestfs___exit_status_to_string (r, "guestunmount",
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status_string,
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sizeof status_string));
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exit (EXIT_FAILURE);
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}
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/* Close the write side of the pipe. This should cause guestunmount
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* to exit. It should exit with status code _2_ because we gave it
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* a mountpoint which isn't a FUSE mountpoint.
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*/
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close (pipefd[1]);
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r = waitpid (pid, &status, 0);
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if (r == -1) {
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perror ("waitpid");
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exit (EXIT_FAILURE);
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}
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if (!WIFEXITED (status) || WEXITSTATUS (status) != 2) {
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char status_string[80];
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fprintf (stderr, "%s: test failed: guestunmount didn't return status code 2; %s\n",
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guestfs___program_name,
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guestfs___exit_status_to_string (status, "guestunmount",
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status_string,
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sizeof status_string));
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exit (EXIT_FAILURE);
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}
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exit (EXIT_SUCCESS);
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}
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