From 0bb91b50100e4633a0e68135854e606653055748 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Sun, 16 Sep 2012 23:31:11 +0200 Subject: udev: add btrfs support All "btrfs" file systems will be registered with the kernel when they show up. Incomplete multi-device volumes will set SYSTEMD_READY=0, to prevent access until the volume is complete and fully registered. --- src/udev/udev-builtin-btrfs.c | 57 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 src/udev/udev-builtin-btrfs.c (limited to 'src/udev/udev-builtin-btrfs.c') diff --git a/src/udev/udev-builtin-btrfs.c b/src/udev/udev-builtin-btrfs.c new file mode 100644 index 0000000000..f95a75e393 --- /dev/null +++ b/src/udev/udev-builtin-btrfs.c @@ -0,0 +1,57 @@ +/* + * btrfs - volume management + * + * Copyright (C) 2012 Kay Sievers + * + * This library 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. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "udev.h" + +#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) + +static int builtin_btrfs(struct udev_device *dev, int argc, char *argv[], bool test) +{ + struct btrfs_ioctl_vol_args args; + int fd; + int err; + + if (argc != 3 || !streq(argv[1], "ready")) + return EXIT_FAILURE; + + fd = open("/dev/btrfs-control", O_RDWR); + if (fd < 0) + return EXIT_FAILURE; + + util_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"); + return EXIT_SUCCESS; +} + +const struct udev_builtin udev_builtin_btrfs = { + .name = "btrfs", + .cmd = builtin_btrfs, + .help = "btrfs volume management", +}; -- cgit v1.2.3-54-g00ecf From c3cfed0d6cd9f537aa998096a43b80e98d99c6c4 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Thu, 8 Nov 2012 22:20:36 +0100 Subject: udev: update file headers --- src/udev/udev-builtin-btrfs.c | 28 ++++++++++++++++++---------- src/udev/udev-builtin-hwdb.c | 2 +- src/udev/udev-builtin.c | 34 ++++++++++++++++++---------------- 3 files changed, 37 insertions(+), 27 deletions(-) (limited to 'src/udev/udev-builtin-btrfs.c') diff --git a/src/udev/udev-builtin-btrfs.c b/src/udev/udev-builtin-btrfs.c index f95a75e393..dfb05525ad 100644 --- a/src/udev/udev-builtin-btrfs.c +++ b/src/udev/udev-builtin-btrfs.c @@ -1,13 +1,21 @@ -/* - * btrfs - volume management - * - * Copyright (C) 2012 Kay Sievers - * - * This library 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. - */ +/*** + This file is part of systemd. + + Copyright 2012 Kay Sievers + + 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 . +***/ #include #include diff --git a/src/udev/udev-builtin-hwdb.c b/src/udev/udev-builtin-hwdb.c index 60f647183f..0a50199c15 100644 --- a/src/udev/udev-builtin-hwdb.c +++ b/src/udev/udev-builtin-hwdb.c @@ -1,7 +1,7 @@ /*** This file is part of systemd. - Copyright 2012 Kay Sievers + Copyright 2012 Kay Sievers 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 diff --git a/src/udev/udev-builtin.c b/src/udev/udev-builtin.c index 2ea7f4e202..de426a379a 100644 --- a/src/udev/udev-builtin.c +++ b/src/udev/udev-builtin.c @@ -1,19 +1,21 @@ -/* - * Copyright (C) 2007-2012 Kay Sievers - * - * 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, see . - */ +/*** + This file is part of systemd. + + Copyright 2007-2012 Kay Sievers + + 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 . +***/ #include #include -- cgit v1.2.3-54-g00ecf