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-rw-r--r--fs/btrfs/send.c104
-rw-r--r--fs/btrfs/send.h10
2 files changed, 85 insertions, 29 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index c2c429005e73..3ed80da71dad 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -844,7 +844,7 @@ out:
*/
static int __get_inode_info(struct btrfs_root *root, struct btrfs_path *path,
u64 ino, u64 *size, u64 *gen, u64 *mode, u64 *uid,
- u64 *gid, u64 *rdev)
+ u64 *gid, u64 *rdev, u64 *fileattr)
{
int ret;
struct btrfs_inode_item *ii;
@@ -874,6 +874,12 @@ static int __get_inode_info(struct btrfs_root *root, struct btrfs_path *path,
*gid = btrfs_inode_gid(path->nodes[0], ii);
if (rdev)
*rdev = btrfs_inode_rdev(path->nodes[0], ii);
+ /*
+ * Transfer the unchanged u64 value of btrfs_inode_item::flags, that's
+ * otherwise logically split to 32/32 parts.
+ */
+ if (fileattr)
+ *fileattr = btrfs_inode_flags(path->nodes[0], ii);
return ret;
}
@@ -881,7 +887,7 @@ static int __get_inode_info(struct btrfs_root *root, struct btrfs_path *path,
static int get_inode_info(struct btrfs_root *root,
u64 ino, u64 *size, u64 *gen,
u64 *mode, u64 *uid, u64 *gid,
- u64 *rdev)
+ u64 *rdev, u64 *fileattr)
{
struct btrfs_path *path;
int ret;
@@ -890,7 +896,7 @@ static int get_inode_info(struct btrfs_root *root,
if (!path)
return -ENOMEM;
ret = __get_inode_info(root, path, ino, size, gen, mode, uid, gid,
- rdev);
+ rdev, fileattr);
btrfs_free_path(path);
return ret;
}
@@ -1636,7 +1642,7 @@ static int get_cur_inode_state(struct send_ctx *sctx, u64 ino, u64 gen)
u64 right_gen;
ret = get_inode_info(sctx->send_root, ino, NULL, &left_gen, NULL, NULL,
- NULL, NULL);
+ NULL, NULL, NULL);
if (ret < 0 && ret != -ENOENT)
goto out;
left_ret = ret;
@@ -1645,7 +1651,7 @@ static int get_cur_inode_state(struct send_ctx *sctx, u64 ino, u64 gen)
right_ret = -ENOENT;
} else {
ret = get_inode_info(sctx->parent_root, ino, NULL, &right_gen,
- NULL, NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL, NULL);
if (ret < 0 && ret != -ENOENT)
goto out;
right_ret = ret;
@@ -1808,7 +1814,7 @@ static int get_first_ref(struct btrfs_root *root, u64 ino,
if (dir_gen) {
ret = get_inode_info(root, parent_dir, NULL, dir_gen, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
if (ret < 0)
goto out;
}
@@ -1880,7 +1886,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
*/
if (sctx->parent_root && dir != BTRFS_FIRST_FREE_OBJECTID) {
ret = get_inode_info(sctx->parent_root, dir, NULL, &gen, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
if (ret < 0 && ret != -ENOENT)
goto out;
if (ret) {
@@ -1908,7 +1914,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
if (other_inode > sctx->send_progress ||
is_waiting_for_move(sctx, other_inode)) {
ret = get_inode_info(sctx->parent_root, other_inode, NULL,
- who_gen, who_mode, NULL, NULL, NULL);
+ who_gen, who_mode, NULL, NULL, NULL, NULL);
if (ret < 0)
goto out;
@@ -1947,7 +1953,7 @@ static int did_overwrite_ref(struct send_ctx *sctx,
if (dir != BTRFS_FIRST_FREE_OBJECTID) {
ret = get_inode_info(sctx->send_root, dir, NULL, &gen, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
if (ret < 0 && ret != -ENOENT)
goto out;
if (ret) {
@@ -1970,7 +1976,7 @@ static int did_overwrite_ref(struct send_ctx *sctx,
}
ret = get_inode_info(sctx->send_root, ow_inode, NULL, &gen, NULL, NULL,
- NULL, NULL);
+ NULL, NULL, NULL);
if (ret < 0)
goto out;
@@ -2501,6 +2507,39 @@ out:
return ret;
}
+static int send_fileattr(struct send_ctx *sctx, u64 ino, u64 gen, u64 fileattr)
+{
+ struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
+ int ret = 0;
+ struct fs_path *p;
+
+ if (sctx->proto < 2)
+ return 0;
+
+ btrfs_debug(fs_info, "send_fileattr %llu fileattr=%llu", ino, fileattr);
+
+ p = fs_path_alloc();
+ if (!p)
+ return -ENOMEM;
+
+ ret = begin_cmd(sctx, BTRFS_SEND_C_FILEATTR);
+ if (ret < 0)
+ goto out;
+
+ ret = get_cur_path(sctx, ino, gen, p);
+ if (ret < 0)
+ goto out;
+ TLV_PUT_PATH(sctx, BTRFS_SEND_A_PATH, p);
+ TLV_PUT_U64(sctx, BTRFS_SEND_A_FILEATTR, fileattr);
+
+ ret = send_cmd(sctx);
+
+tlv_put_failure:
+out:
+ fs_path_free(p);
+ return ret;
+}
+
static int send_chown(struct send_ctx *sctx, u64 ino, u64 gen, u64 uid, u64 gid)
{
struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
@@ -2615,7 +2654,7 @@ static int send_create_inode(struct send_ctx *sctx, u64 ino)
if (ino != sctx->cur_ino) {
ret = get_inode_info(sctx->send_root, ino, NULL, &gen, &mode,
- NULL, NULL, &rdev);
+ NULL, NULL, &rdev, NULL);
if (ret < 0)
goto out;
} else {
@@ -3318,7 +3357,7 @@ finish:
* The parent inode might have been deleted in the send snapshot
*/
ret = get_inode_info(sctx->send_root, cur->dir, NULL,
- NULL, NULL, NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL, NULL, NULL);
if (ret == -ENOENT) {
ret = 0;
continue;
@@ -3493,11 +3532,11 @@ static int wait_for_dest_dir_move(struct send_ctx *sctx,
}
ret = get_inode_info(sctx->parent_root, di_key.objectid, NULL,
- &left_gen, NULL, NULL, NULL, NULL);
+ &left_gen, NULL, NULL, NULL, NULL, NULL);
if (ret < 0)
goto out;
ret = get_inode_info(sctx->send_root, di_key.objectid, NULL,
- &right_gen, NULL, NULL, NULL, NULL);
+ &right_gen, NULL, NULL, NULL, NULL, NULL);
if (ret < 0) {
if (ret == -ENOENT)
ret = 0;
@@ -3628,7 +3667,7 @@ static int is_ancestor(struct btrfs_root *root,
}
ret = get_inode_info(root, parent, NULL, &parent_gen,
- NULL, NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL, NULL);
if (ret < 0)
goto out;
ret = check_ino_in_path(root, ino1, ino1_gen,
@@ -3720,7 +3759,7 @@ static int wait_for_parent_move(struct send_ctx *sctx,
ret = get_inode_info(sctx->parent_root, ino, NULL,
&parent_ino_gen, NULL, NULL, NULL,
- NULL);
+ NULL, NULL);
if (ret < 0)
goto out;
if (ino_gen == parent_ino_gen) {
@@ -4326,8 +4365,7 @@ static int record_ref(struct btrfs_root *root, u64 dir, struct fs_path *name,
if (!p)
return -ENOMEM;
- ret = get_inode_info(root, dir, NULL, &gen, NULL, NULL,
- NULL, NULL);
+ ret = get_inode_info(root, dir, NULL, &gen, NULL, NULL, NULL, NULL, NULL);
if (ret < 0)
goto out;
@@ -4415,7 +4453,7 @@ static int __find_iref(int num, u64 dir, int index,
* else matches.
*/
ret = get_inode_info(ctx->root, dir, NULL, &dir_gen, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
if (ret)
return ret;
if (dir_gen != ctx->dir_gen)
@@ -4459,7 +4497,7 @@ static int __record_changed_new_ref(int num, u64 dir, int index,
struct send_ctx *sctx = ctx;
ret = get_inode_info(sctx->send_root, dir, NULL, &dir_gen, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
if (ret)
return ret;
@@ -4482,7 +4520,7 @@ static int __record_changed_deleted_ref(int num, u64 dir, int index,
struct send_ctx *sctx = ctx;
ret = get_inode_info(sctx->parent_root, dir, NULL, &dir_gen, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
if (ret)
return ret;
@@ -5031,7 +5069,7 @@ static int send_clone(struct send_ctx *sctx,
if (clone_root->root == sctx->send_root) {
ret = get_inode_info(sctx->send_root, clone_root->ino, NULL,
- &gen, NULL, NULL, NULL, NULL);
+ &gen, NULL, NULL, NULL, NULL, NULL);
if (ret < 0)
goto out;
ret = get_cur_path(sctx, clone_root->ino, gen, p);
@@ -5540,7 +5578,8 @@ static int clone_range(struct send_ctx *sctx, struct btrfs_path *dst_path,
* accept clones from these extents.
*/
ret = __get_inode_info(clone_root->root, path, clone_root->ino,
- &clone_src_i_size, NULL, NULL, NULL, NULL, NULL);
+ &clone_src_i_size, NULL, NULL, NULL, NULL, NULL,
+ NULL);
btrfs_release_path(path);
if (ret < 0)
goto out;
@@ -6235,11 +6274,14 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
u64 left_mode;
u64 left_uid;
u64 left_gid;
+ u64 left_fileattr;
u64 right_mode;
u64 right_uid;
u64 right_gid;
+ u64 right_fileattr;
int need_chmod = 0;
int need_chown = 0;
+ bool need_fileattr = false;
int need_truncate = 1;
int pending_move = 0;
int refs_processed = 0;
@@ -6273,7 +6315,7 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
goto out;
ret = get_inode_info(sctx->send_root, sctx->cur_ino, NULL, NULL,
- &left_mode, &left_uid, &left_gid, NULL);
+ &left_mode, &left_uid, &left_gid, NULL, &left_fileattr);
if (ret < 0)
goto out;
@@ -6288,7 +6330,7 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
ret = get_inode_info(sctx->parent_root, sctx->cur_ino,
&old_size, NULL, &right_mode, &right_uid,
- &right_gid, NULL);
+ &right_gid, NULL, &right_fileattr);
if (ret < 0)
goto out;
@@ -6296,6 +6338,8 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
need_chown = 1;
if (!S_ISLNK(sctx->cur_inode_mode) && left_mode != right_mode)
need_chmod = 1;
+ if (!S_ISLNK(sctx->cur_inode_mode) && left_fileattr != right_fileattr)
+ need_fileattr = true;
if ((old_size == sctx->cur_inode_size) ||
(sctx->cur_inode_size > old_size &&
sctx->cur_inode_next_write_offset == sctx->cur_inode_size))
@@ -6339,6 +6383,12 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
if (ret < 0)
goto out;
}
+ if (need_fileattr) {
+ ret = send_fileattr(sctx, sctx->cur_ino, sctx->cur_inode_gen,
+ left_fileattr);
+ if (ret < 0)
+ goto out;
+ }
ret = send_capabilities(sctx);
if (ret < 0)
@@ -6750,12 +6800,12 @@ static int dir_changed(struct send_ctx *sctx, u64 dir)
int ret;
ret = get_inode_info(sctx->send_root, dir, NULL, &new_gen, NULL, NULL,
- NULL, NULL);
+ NULL, NULL, NULL);
if (ret)
return ret;
ret = get_inode_info(sctx->parent_root, dir, NULL, &orig_gen, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
if (ret)
return ret;
diff --git a/fs/btrfs/send.h b/fs/btrfs/send.h
index 7f615ddc8d9c..4bb4e6a638cb 100644
--- a/fs/btrfs/send.h
+++ b/fs/btrfs/send.h
@@ -88,7 +88,7 @@ enum btrfs_send_cmd {
/* Version 2 */
BTRFS_SEND_C_FALLOCATE = 23,
- BTRFS_SEND_C_SETFLAGS = 24,
+ BTRFS_SEND_C_FILEATTR = 24,
BTRFS_SEND_C_ENCODED_WRITE = 25,
BTRFS_SEND_C_MAX_V2 = 25,
@@ -141,7 +141,13 @@ enum {
/* Version 2 */
BTRFS_SEND_A_FALLOCATE_MODE = 25,
- BTRFS_SEND_A_SETFLAGS_FLAGS = 26,
+ /*
+ * File attributes from the FS_*_FL namespace (i_flags, xflags),
+ * translated to BTRFS_INODE_* bits (BTRFS_INODE_FLAG_MASK) and stored
+ * in btrfs_inode_item::flags (represented by btrfs_inode::flags and
+ * btrfs_inode::ro_flags).
+ */
+ BTRFS_SEND_A_FILEATTR = 26,
BTRFS_SEND_A_UNENCODED_FILE_LEN = 27,
BTRFS_SEND_A_UNENCODED_LEN = 28,
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All Rights Reverse Engineered.