tree-wide: beautify remaining copyright statements

[thirdparty/systemd.git] / src / udev / udev-builtin-btrfs.c

diff --git a/src/udev/udev-builtin-btrfs.c b/src/udev/udev-builtin-btrfs.c
index dfb05525ad8ee5b5cc7a4b87d86b161af4f9560a..34728820c6bfd1c1093a70835fa904021b51486c 100644 (file)
--- a/src/udev/udev-builtin-btrfs.c
+++ b/src/udev/udev-builtin-btrfs.c
@@ -1,60 +1,39 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
-  This file is part of systemd.
-
-  Copyright 2012 Kay Sievers <kay@vrfy.org>
-
-  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/>.
+  Copyright © 2012 Kay Sievers <kay@vrfy.org>
 ***/
 
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
 #include <fcntl.h>
-#include <errno.h>
+#include <stdlib.h>
 #include <sys/ioctl.h>
 
-#include "udev.h"
+#if HAVE_LINUX_BTRFS_H
+#include <linux/btrfs.h>
+#endif
 
-#define BTRFS_PATH_NAME_MAX 4087
-struct btrfs_ioctl_vol_args {
-        int64_t fd;
-        char name[BTRFS_PATH_NAME_MAX + 1];
-};
-#define BTRFS_IOCTL_MAGIC 0x94
-#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, struct btrfs_ioctl_vol_args)
+#include "fd-util.h"
+#include "missing.h"
+#include "string-util.h"
+#include "udev.h"
 
-static int builtin_btrfs(struct udev_device *dev, int argc, char *argv[], bool test)
-{
-        struct  btrfs_ioctl_vol_args args;
-        int fd;
+static int builtin_btrfs(struct udev_device *dev, int argc, char *argv[], bool test) {
+        struct btrfs_ioctl_vol_args args = {};
+        _cleanup_close_ int fd = -1;
         int err;
 
         if (argc != 3 || !streq(argv[1], "ready"))
                 return EXIT_FAILURE;
 
-        fd = open("/dev/btrfs-control", O_RDWR);
+        fd = open("/dev/btrfs-control", O_RDWR|O_CLOEXEC);
         if (fd < 0)
                 return EXIT_FAILURE;
 
-        util_strscpy(args.name, sizeof(args.name), argv[2]);
+        strscpy(args.name, sizeof(args.name), argv[2]);
         err = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
-        close(fd);
         if (err < 0)
                 return EXIT_FAILURE;
 
-        udev_builtin_add_property(dev, test, "ID_BTRFS_READY", err == 0 ? "1" : "0");
+        udev_builtin_add_property(dev, test, "ID_BTRFS_READY", one_zero(err == 0));
         return EXIT_SUCCESS;
 }