Commit 1b53ac4d authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: allow treeid==0 in the inode lookup ioctl



When a root id of 0 is sent to the inode lookup ioctl, it will
use the root of the file we're ioctling and pass the root id
back to userland along with the results.

This allows userland to do searches based on that root later on.
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 90fdde14
...@@ -1215,6 +1215,9 @@ static noinline int btrfs_ioctl_ino_lookup(struct file *file, ...@@ -1215,6 +1215,9 @@ static noinline int btrfs_ioctl_ino_lookup(struct file *file,
} }
inode = fdentry(file)->d_inode; inode = fdentry(file)->d_inode;
if (args->treeid == 0)
args->treeid = BTRFS_I(inode)->root->root_key.objectid;
ret = btrfs_search_path_in_tree(BTRFS_I(inode)->root->fs_info, ret = btrfs_search_path_in_tree(BTRFS_I(inode)->root->fs_info,
args->treeid, args->objectid, args->treeid, args->objectid,
args->name); args->name);
......
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