+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2015 Lennart Poettering
-
- systemd 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.
-
- systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
+#include "label.h"
#include "lockfile-util.h"
#include "log.h"
#include "machine-pool.h"
_cleanup_close_ int fd = -1;
struct statvfs ss;
pid_t pid = 0;
- siginfo_t si;
int r;
/* We want to be able to make use of btrfs-specific file
* /var/lib/machines. */
fd = open("/var/lib/machines.raw", O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
- if (fd >= 0) {
- r = fd;
- fd = -1;
- return r;
- }
+ if (fd >= 0)
+ return TAKE_FD(fd);
if (errno != ENOENT)
return sd_bus_error_set_errnof(error, errno, "Failed to open /var/lib/machines.raw: %m");
goto fail;
}
- pid = fork();
- if (pid < 0) {
- r = sd_bus_error_set_errnof(error, errno, "Failed to fork mkfs.btrfs: %m");
+ r = safe_fork("(mkfs)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &pid);
+ if (r < 0) {
+ sd_bus_error_set_errnof(error, r, "Failed to fork mkfs.btrfs: %m");
goto fail;
}
-
- if (pid == 0) {
+ if (r == 0) {
/* Child */
- (void) reset_all_signal_handlers();
- (void) reset_signal_mask();
- assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
-
fd = safe_close(fd);
execlp("mkfs.btrfs", "-Lvar-lib-machines", tmp, NULL);
_exit(EXIT_FAILURE);
}
- r = wait_for_terminate(pid, &si);
- if (r < 0) {
- sd_bus_error_set_errnof(error, r, "Failed to wait for mkfs.btrfs: %m");
- goto fail;
- }
-
+ r = wait_for_terminate_and_check("mkfs", pid, 0);
pid = 0;
- if (si.si_code != CLD_EXITED) {
- r = sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "mkfs.btrfs died abnormally.");
+ if (r < 0) {
+ sd_bus_error_set_errnof(error, r, "Failed to wait for mkfs.btrfs: %m");
goto fail;
}
- if (si.si_status == 99) {
+ if (r == 99) {
r = sd_bus_error_set_errnof(error, ENOENT, "Cannot set up /var/lib/machines, mkfs.btrfs is missing");
goto fail;
}
- if (si.si_status != 0) {
- r = sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "mkfs.btrfs failed with error code %i", si.si_status);
+ if (r != EXIT_SUCCESS) {
+ r = sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "mkfs.btrfs failed with error code %i", r);
goto fail;
}
goto fail;
}
- r = fd;
- fd = -1;
-
- return r;
+ return TAKE_FD(fd);
fail:
unlink_noerrno(tmp);