Btrfs in U-boot currently uses a custom callback for ls and doesn't expose the standard opendir/readdir/closedir interface, making it harder to use in generic code. One area where this would be useful is in discovering BLS type 1 entries [1] on a Btrfs filesystem.
Add support for the standard interface, and implement ls in terms of it. [1] https://lore.kernel.org/u-boot/[email protected]/ Signed-off-by: Alexey Charkov <[email protected]> --- Changes in v2: - Cache subvolume id and inode number instead of looking them up on every readdir call (thanks Qu) - Split out the dirent type conversion between btrfs and U-Boot filesystem convention into a helper function (thanks Qu) - Drop redundant check for XATTR entries in btrfs_next_dir_entry (thanks Qu) - Remove btrfs_ls and show_dir which nothing calls after the second patch - Use container_of instead of type-casting struct pointers - Link to v1: https://patch.msgid.link/[email protected] To: Qu Wenruo <[email protected]> To: [email protected] To: [email protected] Cc: Marek Behún <[email protected]> Cc: Tom Rini <[email protected]> Cc: Alexey Charkov <[email protected]> Cc: Peng Fan <[email protected]> Cc: Simon Glass <[email protected]> Cc: Timo tp Preißl <[email protected]> Cc: Patrice Chotard <[email protected]> Cc: Yao Zi <[email protected]> --- Alexey Charkov (2): fs: btrfs: implement opendir(), readdir() and closedir() fs: btrfs: use fs_ls_generic() and drop custom implementation fs/btrfs/btrfs.c | 199 ++++++++++++++++++++++------------------------------ fs/btrfs/ctree.h | 7 +- fs/btrfs/dir-item.c | 76 ++++++++++++-------- fs/fs.c | 6 +- include/btrfs.h | 6 +- 5 files changed, 143 insertions(+), 151 deletions(-) --- base-commit: 19eafbadf20f56c1a24abe6b5e8774e776894261 change-id: 20260625-btrfs-readdir-8beac3ac5220 Best regards, -- Alexey Charkov <[email protected]>
