2 This file is part of systemd.
4 Copyright 2012 Kay Sievers <kay@vrfy.org>
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/ioctl.h>
30 #define BTRFS_PATH_NAME_MAX 4087
31 struct btrfs_ioctl_vol_args {
33 char name[BTRFS_PATH_NAME_MAX + 1];
35 #define BTRFS_IOCTL_MAGIC 0x94
36 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, struct btrfs_ioctl_vol_args)
38 static int builtin_btrfs(struct udev_device *dev, int argc, char *argv[], bool test)
40 struct btrfs_ioctl_vol_args args;
41 _cleanup_close_ int fd = -1;
44 if (argc != 3 || !streq(argv[1], "ready"))
47 fd = open("/dev/btrfs-control", O_RDWR|O_CLOEXEC);
51 strscpy(args.name, sizeof(args.name), argv[2]);
52 err = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
56 udev_builtin_add_property(dev, test, "ID_BTRFS_READY", err == 0 ? "1" : "0");
60 const struct udev_builtin udev_builtin_btrfs = {
63 .help = "btrfs volume management",