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8b87811f94
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3 Commits

Author SHA1 Message Date
Omar Sandoval
8b87811f94 libbtrfsutil: add btrfs_util_subvolume_path() 
We can just walk up root backrefs with BTRFS_IOC_TREE_SEARCH and inode
paths with BTRFS_IOC_INO_LOOKUP.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2018-03-06 11:28:36 +01:00
Omar Sandoval
f676a8ad11 libbtrfsutil: add btrfs_util_create_subvolume() 
Doing the ioctl() directly isn't too bad, but passing in a full path is
more convenient than opening the parent and passing the path component.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2018-03-06 11:28:36 +01:00
Omar Sandoval
92d4035074 libbtrfsutil: add btrfs_util_is_subvolume() and btrfs_util_subvolume_id() 
These are the most trivial helpers in the library and will be used to
implement several of the more involved functions.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2018-03-06 11:28:36 +01:00