Btrfs: Handle SGID bit when creating inodes
Before this patch, new files/dirs would ignore the SGID bit on their
parent directory and always be owned by the creating user's uid/gid.
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 95ea58c..5792816d4 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3472,7 +3472,14 @@
root->highest_inode = objectid;
inode->i_uid = current_fsuid();
- inode->i_gid = current_fsgid();
+
+ if (dir->i_mode & S_ISGID) {
+ inode->i_gid = dir->i_gid;
+ if (S_ISDIR(mode))
+ mode |= S_ISGID;
+ } else
+ inode->i_gid = current_fsgid();
+
inode->i_mode = mode;
inode->i_ino = objectid;
inode_set_bytes(inode, 0);