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Userspace utilities to manage btrfs filesystems
1,334 Commits 17 Branches 164 Tags 28 MiB
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Jeff Mahoney b276e4bc50 btrfs-progs: canonicalize pathnames for device commands 
mount(8) will canonicalize pathnames before passing them to the kernel.
Links to e.g. /dev/sda will be resolved to /dev/sda. Links to /dev/dm-#
will be resolved using the name of the device mapper table to
/dev/mapper/<name>.

Btrfs will use whatever name the user passes to it, regardless of whether
it is canonical or not. That means that if a 'btrfs device ready' is
issued on any device node pointing to the original device, it will adopt
the new name instead of the name that was used during mount.

Mounting using /dev/sdb2 will result in df:
/dev/sdb2      209715200 39328 207577088   1% /mnt

lrwxrwxrwx 1 root root 4 Jun  4 13:36 /dev/whatever-i-like -> sdb2
/dev/whatever-i-like 209715200 39328 207577088   1% /mnt

Likewise, mounting with /dev/mapper/whatever and using /dev/dm-0 with a
btrfs device command results in df showing /dev/dm-0. This can happen with
multipath devices with friendly names enabled and doing something like
'partprobe' which (at least with our version) ends up issuing a 'change'
uevent on the sysfs node. That *always* uses the dm-# name, and we get
confused users.

This patch does the same canonicalization of the paths that mount does
so that we don't end up having inconsistent names reported by ->show_devices
later.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
[use PATH_MAX in canonicalize_dm_name]
Signed-off-by: David Sterba <dsterba@suse.cz>
2014-08-22 14:39:34 +02:00
Documentation btrfs-progs: make pretty Documentation/ build match the rest 2014-08-22 14:39:33 +02:00
tests Btrfs-progs: add a test image for the transid fixer in btrfsck 2013-10-16 08:23:12 -04:00
.gitignore btrfs-progs: Introduce asciidoc based man page and btrfs man page. 2014-04-22 14:15:19 +02:00
bcp
bitops.h Btrfs-progs: add a free space cache checker to fsck V2 2013-04-23 18:56:21 +02:00
btrfs-calc-size.c Btrfs-progs: fsck: fix wrong check for btrfs_read_fs_root() 2014-08-22 14:39:33 +02:00
btrfs-convert.c btrfs-progs: mkfs: allow UUID specification at mkfs time 2014-08-22 14:39:32 +02:00
btrfs-corrupt-block.c Btrfs-progs: switch to arg_strtou64() part2 2014-03-21 06:23:19 -07:00
btrfs-crc.c btrfs-progs: Fix getopt on arm/ppc platforms 2013-08-09 14:32:34 +02:00
btrfs-debug-tree.c Btrfs-progs: debug-tree, add option to dump a single tree 2014-08-22 14:39:31 +02:00
btrfs-find-root.c Btrfs-progs: make smatch checker happy (trivial fixes) 2014-05-02 17:03:45 +02:00
btrfs-fragments.c btrfs-progs: remove unused variables 2013-10-16 08:23:13 -04:00
btrfs-image.c btrfs-image: Fix a data race in build_chunk_tree. 2014-08-22 14:39:32 +02:00
btrfs-list.c btrfs-progs: fix listing deleted subvolumes 2014-04-04 17:54:35 -07:00
btrfs-list.h btrfs-progs: Copyright string update 2014-03-21 06:23:24 -07:00
btrfs-map-logical.c Btrfs-progs: make smatch checker happy (trivial fixes) 2014-05-02 17:03:45 +02:00
btrfs-select-super.c btrfs-progs: fix compiler warning 2014-08-22 14:39:32 +02:00
btrfs-show-super.c btrfs-show-super: don't try to print not-superblocks 2014-08-22 14:39:31 +02:00
btrfs-zero-log.c Btrfs-progs: rework open_ctree to take flags, add a new one V2 2013-11-07 16:10:40 -05:00
btrfs.c Btrfs-progs: btrfs: remove dead code in handle_options 2014-04-11 19:05:40 +02:00
btrfsck.h btrfs-progs: Copyright string update 2014-03-21 06:23:24 -07:00
btrfstune.c btrfs-progs: clarify manpage for btrfstune seeding option 2014-08-22 14:39:32 +02:00
chunk-recover.c btrfs-progs: fix blindly goto failure for chunk-recover 2014-08-22 14:39:33 +02:00
cmds-balance.c btrfs-progs: fix minor grammar issues 2014-01-31 08:22:28 -08:00
cmds-check.c Btrfs-progs: fsck: add an option to check data csums 2014-08-22 14:39:33 +02:00
cmds-device.c btrfs-progs: canonicalize pathnames for device commands 2014-08-22 14:39:34 +02:00
cmds-filesystem.c btrfs-progs: Fix the return value of btrfs_scan_kernel() 2014-04-22 14:34:27 +02:00
cmds-inspect.c Btrfs-progs: switch to arg_strtou64() part2 2014-03-21 06:23:19 -07:00
cmds-property.c btrfs-progs: Make property work with -t option 2014-04-11 19:40:18 +02:00
cmds-qgroup.c btrfs-progs: qgroup destroy says create failed 2014-01-31 08:22:12 -08:00
cmds-quota.c Btrfs-progs: fix magic return value in cmds-quota.c 2013-10-16 08:20:41 -04:00
cmds-receive.c Btrfs-progs: receive, allow to continue after errors happen 2014-08-22 14:39:32 +02:00
cmds-replace.c btrfs-progs: canonicalize pathnames for device commands 2014-08-22 14:39:34 +02:00
cmds-rescue.c btrfs-progs: use check_argc_exact to check arg number of btrfs-rescue 2014-08-22 14:39:31 +02:00
cmds-restore.c Btrfs-progs: update btrfs_file_extent_inline_len to match kernel version 2014-04-11 19:47:29 +02:00
cmds-scrub.c btrfs-progs: Improve the errno string about open_path_or_dev_mnt() 2014-08-22 14:39:30 +02:00
cmds-send.c btrfs-progs: Remove unneeded assert in find_good_parent(). 2014-08-22 14:39:31 +02:00
cmds-subvolume.c Btrfs-progs: switch to arg_strtou64() part3 2014-03-21 06:23:20 -07:00
commands.h btrfs-progs: move find_mount_root to utils.[ch] 2014-03-21 06:23:12 -07:00
COPYING
crc32c.c btrfs-progs: make many private symbols static 2013-09-03 19:41:08 +02:00
crc32c.h btrfs-progs: libify some parts of btrfs-progs 2013-02-27 15:24:25 +01:00
ctree.c Btrfs-progs: deal with invalid key orderings and bad orphan items V2 2014-01-31 08:22:15 -08:00
ctree.h btrfs-progs: add quota group verify code 2014-08-22 14:39:33 +02:00
dir-item.c btrfs-progs: drop unused parameter from btrfs_item_nr 2013-10-16 08:23:10 -04:00
dir-test.c Btrfs-progs: fix magic return value in dir-test.c 2013-10-16 08:20:42 -04:00
disk-io.c Btrfs-progs: fsck: fix wrong check for btrfs_read_fs_root() 2014-08-22 14:39:33 +02:00
disk-io.h btrfs-progs: btrfsck operations should be exclusive 2014-01-31 08:22:26 -08:00
extent_io.c Btrfs-progs: fix the mismatch of extent buffer's space 2014-01-31 08:22:06 -08:00
extent_io.h Btrfs-progs: keep track of transid failures and fix them if possible 2013-10-16 08:23:12 -04:00
extent-cache.c Btrfs-progs: extend the extent cache for the device extent 2013-07-03 14:06:54 -04:00
extent-cache.h Btrfs-progs: extend the extent cache for the device extent 2013-07-03 14:06:54 -04:00
extent-tree.c Btrfs-progs: fsck: handle case that we can not lookup extent info 2014-03-21 06:23:39 -07:00
file-item.c Btrfs-progs: deal with invalid key orderings and bad orphan items V2 2014-01-31 08:22:15 -08:00
free-space-cache.c btrfs-progs: cleanup nonsense ret value assignment 2014-03-21 06:23:16 -07:00
free-space-cache.h Btrfs-progs: add a free space cache checker to fsck V2 2013-04-23 18:56:21 +02:00
fsck.btrfs btrfs-progs: add fsck.btrfs stub and manpage 2014-01-31 08:22:13 -08:00
hash.h
hasher.c
help.c Btrfs-progs: return 1 rather than 129 in usage() 2013-10-16 08:20:03 -04:00
inode-item.c btrfs-progs: mark static & remove unused from shared kernel code 2013-09-03 19:40:53 +02:00
inode-map.c btrfs-progs: mark static & remove unused from shared kernel code 2013-09-03 19:40:53 +02:00
INSTALL btrfs-progs: Add information about libblkid requirement to INSTALL file 2014-08-22 14:39:31 +02:00
ioctl-test.c btrfs-progs: mark static & remove unused from non-kernel code 2013-09-03 19:40:54 +02:00
ioctl.h btrfs-progs: correct prompt of minimal num of devs for raid56 2014-04-11 19:47:30 +02:00
kerncompat.h btrfs-progs: import ulist 2014-08-22 14:39:33 +02:00
list_sort.c btrfs-progs: add list_sort and use it to sort devices by id 2013-10-16 08:22:26 -04:00
list_sort.h btrfs-progs: add list_sort and use it to sort devices by id 2013-10-16 08:22:26 -04:00
list.h Btrfs-progs: introduce list_{first, next}_entry/list_splice_tail{_init} 2013-07-03 14:06:55 -04:00
Makefile btrfs-progs: add quota group verify code 2014-08-22 14:39:33 +02:00
math.h btrfs-progs: Copyright string update 2014-03-21 06:23:24 -07:00
mkfs.c btrfs-progs: mkfs: allow UUID specification at mkfs time 2014-08-22 14:39:32 +02:00
print-tree.c btrfs-progs: add quota group verify code 2014-08-22 14:39:33 +02:00
print-tree.h btrfs-progs: add quota group verify code 2014-08-22 14:39:33 +02:00
props.c Btrfs-progs: set string end sing '\0' for property 2014-05-02 17:05:37 +02:00
props.h Btrfs-progs: introduce btrfs property subgroup 2014-01-31 08:22:31 -08:00
qgroup-verify.c btrfs-progs: add quota group verify code 2014-08-22 14:39:33 +02:00
qgroup-verify.h btrfs-progs: add quota group verify code 2014-08-22 14:39:33 +02:00
qgroup.c btrfs-progs: print qgroup excl as unsigned 2014-08-22 14:39:32 +02:00
qgroup.h Btrfs-progs: enhance btrfs qgroup show to sort qgroups 2013-10-16 08:23:12 -04:00
quick-test.c Btrfs-progs: rework open_ctree to take flags, add a new one V2 2013-11-07 16:10:40 -05:00
radix-tree.c btrfs-progs: make many private symbols static 2013-09-03 19:41:08 +02:00
radix-tree.h btrfs-progs: libify some parts of btrfs-progs 2013-02-27 15:24:25 +01:00
raid6.c btrfs-progs: give raid6.c its exported prototypes 2013-09-03 19:41:11 +02:00
random-test.c Btrfs-progs: fix magic return value in random-test.c 2013-10-16 08:20:42 -04:00
rbtree.c Btrfs-progs: introduce common insert/search/delete functions for rb-tree 2013-07-03 14:06:54 -04:00
rbtree.h Btrfs-progs: introduce common insert/search/delete functions for rb-tree 2013-07-03 14:06:54 -04:00
repair.c Btrfs-progs: introduce common insert/search/delete functions for rb-tree 2013-07-03 14:06:54 -04:00
repair.h
root-tree.c Btrfs-progs: free path if we don't find root item 2014-03-21 06:23:32 -07:00
send-stream.c Btrfs-progs: receive, allow to continue after errors happen 2014-08-22 14:39:32 +02:00
send-stream.h Btrfs-progs: receive, allow to continue after errors happen 2014-08-22 14:39:32 +02:00
send-test.c Btrfs-progs: remove unsed pthread attribute objects 2014-04-22 14:33:35 +02:00
send-utils.c btrfs-progs: Init root_item to avoid gcc 4.8.2 warning 2014-03-21 06:23:29 -07:00
send-utils.h btrfs-progs: enclose uuid tree compat code with ifdefs 2014-03-21 06:23:07 -07:00
send.h
show-blocks
super-recover.c btrfs-progs: Copyright string update 2014-03-21 06:23:24 -07:00
transaction.h
ulist.c btrfs-progs: import ulist 2014-08-22 14:39:33 +02:00
ulist.h btrfs-progs: import ulist 2014-08-22 14:39:33 +02:00
utils-lib.c btrfs-progs: move arg_strtou64 to a separate file for library 2014-05-02 17:04:28 +02:00
utils.c btrfs-progs: canonicalize pathnames for device commands 2014-08-22 14:39:34 +02:00
utils.h btrfs-progs: canonicalize pathnames for device commands 2014-08-22 14:39:34 +02:00
uuid-tree.c btrfs-progs: fix in-place byte swapping 2013-09-03 19:41:06 +02:00
version.sh v3.14.2 2014-05-29 20:56:59 -04:00
volumes.c btrfs-progs: add dev maxs limit for btrfs_alloc_chunk in user space 2014-05-02 17:04:23 +02:00
volumes.h btrfs-progs: don't replicate the stripe_len defines 2014-01-31 08:22:18 -08:00