summaryrefslogtreecommitdiff
path: root/fs/btrfs/send.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs/send.c')
-rw-r--r--fs/btrfs/send.c461
1 files changed, 259 insertions, 202 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index e7671afcee4f..4ef4167072b8 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -15,6 +15,7 @@
#include <linux/string.h>
#include <linux/compat.h>
#include <linux/crc32c.h>
+#include <linux/fsverity.h>
#include "send.h"
#include "ctree.h"
@@ -127,6 +128,8 @@ struct send_ctx {
bool cur_inode_new_gen;
bool cur_inode_deleted;
bool ignore_cur_inode;
+ bool cur_inode_needs_verity;
+ void *verity_descriptor;
u64 send_progress;
@@ -624,6 +627,7 @@ static int tlv_put(struct send_ctx *sctx, u16 attr, const void *data, int len)
return tlv_put(sctx, attr, &__tmp, sizeof(__tmp)); \
}
+TLV_PUT_DEFINE_INT(8)
TLV_PUT_DEFINE_INT(32)
TLV_PUT_DEFINE_INT(64)
@@ -842,17 +846,32 @@ out:
return ret;
}
+struct btrfs_inode_info {
+ u64 size;
+ u64 gen;
+ u64 mode;
+ u64 uid;
+ u64 gid;
+ u64 rdev;
+ u64 fileattr;
+ u64 nlink;
+};
+
/*
* Helper function to retrieve some fields from an inode item.
*/
-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 *fileattr)
+static int get_inode_info(struct btrfs_root *root, u64 ino,
+ struct btrfs_inode_info *info)
{
int ret;
+ struct btrfs_path *path;
struct btrfs_inode_item *ii;
struct btrfs_key key;
+ path = alloc_path_for_send();
+ if (!path)
+ return -ENOMEM;
+
key.objectid = ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
@@ -860,47 +879,43 @@ static int __get_inode_info(struct btrfs_root *root, struct btrfs_path *path,
if (ret) {
if (ret > 0)
ret = -ENOENT;
- return ret;
+ goto out;
}
+ if (!info)
+ goto out;
+
ii = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
- if (size)
- *size = btrfs_inode_size(path->nodes[0], ii);
- if (gen)
- *gen = btrfs_inode_generation(path->nodes[0], ii);
- if (mode)
- *mode = btrfs_inode_mode(path->nodes[0], ii);
- if (uid)
- *uid = btrfs_inode_uid(path->nodes[0], ii);
- if (gid)
- *gid = btrfs_inode_gid(path->nodes[0], ii);
- if (rdev)
- *rdev = btrfs_inode_rdev(path->nodes[0], ii);
+ info->size = btrfs_inode_size(path->nodes[0], ii);
+ info->gen = btrfs_inode_generation(path->nodes[0], ii);
+ info->mode = btrfs_inode_mode(path->nodes[0], ii);
+ info->uid = btrfs_inode_uid(path->nodes[0], ii);
+ info->gid = btrfs_inode_gid(path->nodes[0], ii);
+ info->rdev = btrfs_inode_rdev(path->nodes[0], ii);
+ info->nlink = btrfs_inode_nlink(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);
+ info->fileattr = btrfs_inode_flags(path->nodes[0], ii);
+out:
+ btrfs_free_path(path);
return ret;
}
-static int get_inode_info(struct btrfs_root *root,
- u64 ino, u64 *size, u64 *gen,
- u64 *mode, u64 *uid, u64 *gid,
- u64 *rdev, u64 *fileattr)
+static int get_inode_gen(struct btrfs_root *root, u64 ino, u64 *gen)
{
- struct btrfs_path *path;
int ret;
+ struct btrfs_inode_info info;
- path = alloc_path_for_send();
- if (!path)
- return -ENOMEM;
- ret = __get_inode_info(root, path, ino, size, gen, mode, uid, gid,
- rdev, fileattr);
- btrfs_free_path(path);
+ if (!gen)
+ return -EPERM;
+
+ ret = get_inode_info(root, ino, &info);
+ if (!ret)
+ *gen = info.gen;
return ret;
}
@@ -1643,21 +1658,22 @@ static int get_cur_inode_state(struct send_ctx *sctx, u64 ino, u64 gen)
int right_ret;
u64 left_gen;
u64 right_gen;
+ struct btrfs_inode_info info;
- ret = get_inode_info(sctx->send_root, ino, NULL, &left_gen, NULL, NULL,
- NULL, NULL, NULL);
+ ret = get_inode_info(sctx->send_root, ino, &info);
if (ret < 0 && ret != -ENOENT)
goto out;
- left_ret = ret;
+ left_ret = (info.nlink == 0) ? -ENOENT : ret;
+ left_gen = info.gen;
if (!sctx->parent_root) {
right_ret = -ENOENT;
} else {
- ret = get_inode_info(sctx->parent_root, ino, NULL, &right_gen,
- NULL, NULL, NULL, NULL, NULL);
+ ret = get_inode_info(sctx->parent_root, ino, &info);
if (ret < 0 && ret != -ENOENT)
goto out;
- right_ret = ret;
+ right_ret = (info.nlink == 0) ? -ENOENT : ret;
+ right_gen = info.gen;
}
if (!left_ret && !right_ret) {
@@ -1816,8 +1832,7 @@ static int get_first_ref(struct btrfs_root *root, u64 ino,
btrfs_release_path(path);
if (dir_gen) {
- ret = get_inode_info(root, parent_dir, NULL, dir_gen, NULL,
- NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(root, parent_dir, dir_gen);
if (ret < 0)
goto out;
}
@@ -1874,6 +1889,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
int ret = 0;
u64 gen;
u64 other_inode = 0;
+ struct btrfs_inode_info info;
if (!sctx->parent_root)
goto out;
@@ -1888,8 +1904,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
* and we can just unlink this entry.
*/
if (sctx->parent_root && dir != BTRFS_FIRST_FREE_OBJECTID) {
- ret = get_inode_info(sctx->parent_root, dir, NULL, &gen, NULL,
- NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->parent_root, dir, &gen);
if (ret < 0 && ret != -ENOENT)
goto out;
if (ret) {
@@ -1916,13 +1931,14 @@ 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, NULL);
+ ret = get_inode_info(sctx->parent_root, other_inode, &info);
if (ret < 0)
goto out;
ret = 1;
*who_ino = other_inode;
+ *who_gen = info.gen;
+ *who_mode = info.mode;
} else {
ret = 0;
}
@@ -1955,8 +1971,7 @@ static int did_overwrite_ref(struct send_ctx *sctx,
goto out;
if (dir != BTRFS_FIRST_FREE_OBJECTID) {
- ret = get_inode_info(sctx->send_root, dir, NULL, &gen, NULL,
- NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->send_root, dir, &gen);
if (ret < 0 && ret != -ENOENT)
goto out;
if (ret) {
@@ -1978,8 +1993,7 @@ static int did_overwrite_ref(struct send_ctx *sctx,
goto out;
}
- ret = get_inode_info(sctx->send_root, ow_inode, NULL, &gen, NULL, NULL,
- NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->send_root, ow_inode, &gen);
if (ret < 0)
goto out;
@@ -2645,6 +2659,7 @@ static int send_create_inode(struct send_ctx *sctx, u64 ino)
int ret = 0;
struct fs_path *p;
int cmd;
+ struct btrfs_inode_info info;
u64 gen;
u64 mode;
u64 rdev;
@@ -2656,10 +2671,12 @@ static int send_create_inode(struct send_ctx *sctx, u64 ino)
return -ENOMEM;
if (ino != sctx->cur_ino) {
- ret = get_inode_info(sctx->send_root, ino, NULL, &gen, &mode,
- NULL, NULL, &rdev, NULL);
+ ret = get_inode_info(sctx->send_root, ino, &info);
if (ret < 0)
goto out;
+ gen = info.gen;
+ mode = info.mode;
+ rdev = info.rdev;
} else {
gen = sctx->cur_inode_gen;
mode = sctx->cur_inode_mode;
@@ -3359,8 +3376,7 @@ 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);
+ ret = get_inode_info(sctx->send_root, cur->dir, NULL);
if (ret == -ENOENT) {
ret = 0;
continue;
@@ -3534,12 +3550,10 @@ static int wait_for_dest_dir_move(struct send_ctx *sctx,
goto out;
}
- ret = get_inode_info(sctx->parent_root, di_key.objectid, NULL,
- &left_gen, NULL, NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->parent_root, di_key.objectid, &left_gen);
if (ret < 0)
goto out;
- ret = get_inode_info(sctx->send_root, di_key.objectid, NULL,
- &right_gen, NULL, NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->send_root, di_key.objectid, &right_gen);
if (ret < 0) {
if (ret == -ENOENT)
ret = 0;
@@ -3669,8 +3683,7 @@ static int is_ancestor(struct btrfs_root *root,
cur_offset = item_size;
}
- ret = get_inode_info(root, parent, NULL, &parent_gen,
- NULL, NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(root, parent, &parent_gen);
if (ret < 0)
goto out;
ret = check_ino_in_path(root, ino1, ino1_gen,
@@ -3760,9 +3773,7 @@ static int wait_for_parent_move(struct send_ctx *sctx,
memcmp(path_before->start, path_after->start, len1))) {
u64 parent_ino_gen;
- ret = get_inode_info(sctx->parent_root, ino, NULL,
- &parent_ino_gen, NULL, NULL, NULL,
- NULL, NULL);
+ ret = get_inode_gen(sctx->parent_root, ino, &parent_ino_gen);
if (ret < 0)
goto out;
if (ino_gen == parent_ino_gen) {
@@ -4441,8 +4452,7 @@ static int record_new_ref_if_needed(int num, u64 dir, int index,
struct recorded_ref *ref;
u64 dir_gen;
- ret = get_inode_info(sctx->send_root, dir, NULL, &dir_gen, NULL,
- NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->send_root, dir, &dir_gen);
if (ret < 0)
goto out;
@@ -4472,8 +4482,7 @@ static int record_deleted_ref_if_needed(int num, u64 dir, int index,
struct recorded_ref *ref;
u64 dir_gen;
- ret = get_inode_info(sctx->parent_root, dir, NULL, &dir_gen, NULL,
- NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->parent_root, dir, &dir_gen);
if (ret < 0)
goto out;
@@ -4886,6 +4895,84 @@ static int process_all_new_xattrs(struct send_ctx *sctx)
return ret;
}
+static int send_verity(struct send_ctx *sctx, struct fs_path *path,
+ struct fsverity_descriptor *desc)
+{
+ int ret;
+
+ ret = begin_cmd(sctx, BTRFS_SEND_C_ENABLE_VERITY);
+ if (ret < 0)
+ goto out;
+
+ TLV_PUT_PATH(sctx, BTRFS_SEND_A_PATH, path);
+ TLV_PUT_U8(sctx, BTRFS_SEND_A_VERITY_ALGORITHM,
+ le8_to_cpu(desc->hash_algorithm));
+ TLV_PUT_U32(sctx, BTRFS_SEND_A_VERITY_BLOCK_SIZE,
+ 1U << le8_to_cpu(desc->log_blocksize));
+ TLV_PUT(sctx, BTRFS_SEND_A_VERITY_SALT_DATA, desc->salt,
+ le8_to_cpu(desc->salt_size));
+ TLV_PUT(sctx, BTRFS_SEND_A_VERITY_SIG_DATA, desc->signature,
+ le32_to_cpu(desc->sig_size));
+
+ ret = send_cmd(sctx);
+
+tlv_put_failure:
+out:
+ return ret;
+}
+
+static int process_verity(struct send_ctx *sctx)
+{
+ int ret = 0;
+ struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
+ struct inode *inode;
+ struct fs_path *p;
+
+ inode = btrfs_iget(fs_info->sb, sctx->cur_ino, sctx->send_root);
+ if (IS_ERR(inode))
+ return PTR_ERR(inode);
+
+ ret = btrfs_get_verity_descriptor(inode, NULL, 0);
+ if (ret < 0)
+ goto iput;
+
+ if (ret > FS_VERITY_MAX_DESCRIPTOR_SIZE) {
+ ret = -EMSGSIZE;
+ goto iput;
+ }
+ if (!sctx->verity_descriptor) {
+ sctx->verity_descriptor = kvmalloc(FS_VERITY_MAX_DESCRIPTOR_SIZE,
+ GFP_KERNEL);
+ if (!sctx->verity_descriptor) {
+ ret = -ENOMEM;
+ goto iput;
+ }
+ }
+
+ ret = btrfs_get_verity_descriptor(inode, sctx->verity_descriptor, ret);
+ if (ret < 0)
+ goto iput;
+
+ p = fs_path_alloc();
+ if (!p) {
+ ret = -ENOMEM;
+ goto iput;
+ }
+ ret = get_cur_path(sctx, sctx->cur_ino, sctx->cur_inode_gen, p);
+ if (ret < 0)
+ goto free_path;
+
+ ret = send_verity(sctx, p, sctx->verity_descriptor);
+ if (ret < 0)
+ goto free_path;
+
+free_path:
+ fs_path_free(p);
+iput:
+ iput(inode);
+ return ret;
+}
+
static inline u64 max_send_read_size(const struct send_ctx *sctx)
{
return sctx->send_max_size - SZ_16K;
@@ -5056,8 +5143,7 @@ static int send_clone(struct send_ctx *sctx,
TLV_PUT_PATH(sctx, BTRFS_SEND_A_PATH, p);
if (clone_root->root == sctx->send_root) {
- ret = get_inode_info(sctx->send_root, clone_root->ino, NULL,
- &gen, NULL, NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->send_root, clone_root->ino, &gen);
if (ret < 0)
goto out;
ret = get_cur_path(sctx, clone_root->ino, gen, p);
@@ -5536,6 +5622,7 @@ static int clone_range(struct send_ctx *sctx, struct btrfs_path *dst_path,
struct btrfs_path *path;
struct btrfs_key key;
int ret;
+ struct btrfs_inode_info info;
u64 clone_src_i_size = 0;
/*
@@ -5565,12 +5652,11 @@ static int clone_range(struct send_ctx *sctx, struct btrfs_path *dst_path,
* There are inodes that have extents that lie behind its i_size. Don't
* 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,
- NULL);
+ ret = get_inode_info(clone_root->root, clone_root->ino, &info);
btrfs_release_path(path);
if (ret < 0)
goto out;
+ clone_src_i_size = info.size;
/*
* We can't send a clone operation for the entire range if we find
@@ -6259,6 +6345,7 @@ out:
static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
{
int ret = 0;
+ struct btrfs_inode_info info;
u64 left_mode;
u64 left_uid;
u64 left_gid;
@@ -6301,11 +6388,13 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
goto out;
if (!at_end && sctx->cmp_key->objectid == sctx->cur_ino)
goto out;
-
- ret = get_inode_info(sctx->send_root, sctx->cur_ino, NULL, NULL,
- &left_mode, &left_uid, &left_gid, NULL, &left_fileattr);
+ ret = get_inode_info(sctx->send_root, sctx->cur_ino, &info);
if (ret < 0)
goto out;
+ left_mode = info.mode;
+ left_uid = info.uid;
+ left_gid = info.gid;
+ left_fileattr = info.fileattr;
if (!sctx->parent_root || sctx->cur_inode_new) {
need_chown = 1;
@@ -6316,11 +6405,14 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
} else {
u64 old_size;
- ret = get_inode_info(sctx->parent_root, sctx->cur_ino,
- &old_size, NULL, &right_mode, &right_uid,
- &right_gid, NULL, &right_fileattr);
+ ret = get_inode_info(sctx->parent_root, sctx->cur_ino, &info);
if (ret < 0)
goto out;
+ old_size = info.size;
+ right_mode = info.mode;
+ right_uid = info.uid;
+ right_gid = info.gid;
+ right_fileattr = info.fileattr;
if (left_uid != right_uid || left_gid != right_gid)
need_chown = 1;
@@ -6377,6 +6469,11 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
if (ret < 0)
goto out;
}
+ if (sctx->cur_inode_needs_verity) {
+ ret = process_verity(sctx);
+ if (ret < 0)
+ goto out;
+ }
ret = send_capabilities(sctx);
if (ret < 0)
@@ -6407,86 +6504,6 @@ out:
return ret;
}
-struct parent_paths_ctx {
- struct list_head *refs;
- struct send_ctx *sctx;
-};
-
-static int record_parent_ref(int num, u64 dir, int index, struct fs_path *name,
- void *ctx)
-{
- struct parent_paths_ctx *ppctx = ctx;
-
- /*
- * Pass 0 as the generation for the directory, we don't care about it
- * here as we have no new references to add, we just want to delete all
- * references for an inode.
- */
- return record_ref_in_tree(&ppctx->sctx->rbtree_deleted_refs, ppctx->refs,
- name, dir, 0, ppctx->sctx);
-}
-
-/*
- * Issue unlink operations for all paths of the current inode found in the
- * parent snapshot.
- */
-static int btrfs_unlink_all_paths(struct send_ctx *sctx)
-{
- LIST_HEAD(deleted_refs);
- struct btrfs_path *path;
- struct btrfs_root *root = sctx->parent_root;
- struct btrfs_key key;
- struct btrfs_key found_key;
- struct parent_paths_ctx ctx;
- int iter_ret = 0;
- int ret;
-
- path = alloc_path_for_send();
- if (!path)
- return -ENOMEM;
-
- key.objectid = sctx->cur_ino;
- key.type = BTRFS_INODE_REF_KEY;
- key.offset = 0;
-
- ctx.refs = &deleted_refs;
- ctx.sctx = sctx;
-
- btrfs_for_each_slot(root, &key, &found_key, path, iter_ret) {
- if (found_key.objectid != key.objectid)
- break;
- if (found_key.type != key.type &&
- found_key.type != BTRFS_INODE_EXTREF_KEY)
- break;
-
- ret = iterate_inode_ref(root, path, &found_key, 1,
- record_parent_ref, &ctx);
- if (ret < 0)
- goto out;
- }
- /* Catch error found during iteration */
- if (iter_ret < 0) {
- ret = iter_ret;
- goto out;
- }
-
- while (!list_empty(&deleted_refs)) {
- struct recorded_ref *ref;
-
- ref = list_first_entry(&deleted_refs, struct recorded_ref, list);
- ret = send_unlink(sctx, ref->full_path);
- if (ret < 0)
- goto out;
- recorded_ref_free(ref);
- }
- ret = 0;
-out:
- btrfs_free_path(path);
- if (ret)
- __free_recorded_refs(&deleted_refs);
- return ret;
-}
-
static void close_current_inode(struct send_ctx *sctx)
{
u64 i_size;
@@ -6577,25 +6594,36 @@ static int changed_inode(struct send_ctx *sctx,
* file descriptor against it or turning a RO snapshot into RW mode,
* keep an open file descriptor against a file, delete it and then
* turn the snapshot back to RO mode before using it for a send
- * operation. So if we find such cases, ignore the inode and all its
- * items completely if it's a new inode, or if it's a changed inode
- * make sure all its previous paths (from the parent snapshot) are all
- * unlinked and all other the inode items are ignored.
+ * operation. The former is what the receiver operation does.
+ * Therefore, if we want to send these snapshots soon after they're
+ * received, we need to handle orphan inodes as well. Moreover, orphans
+ * can appear not only in the send snapshot but also in the parent
+ * snapshot. Here are several cases:
+ *
+ * Case 1: BTRFS_COMPARE_TREE_NEW
+ * | send snapshot | action
+ * --------------------------------
+ * nlink | 0 | ignore
+ *
+ * Case 2: BTRFS_COMPARE_TREE_DELETED
+ * | parent snapshot | action
+ * ----------------------------------
+ * nlink | 0 | as usual
+ * Note: No unlinks will be sent because there're no paths for it.
+ *
+ * Case 3: BTRFS_COMPARE_TREE_CHANGED
+ * | | parent snapshot | send snapshot | action
+ * -----------------------------------------------------------------------
+ * subcase 1 | nlink | 0 | 0 | ignore
+ * subcase 2 | nlink | >0 | 0 | new_gen(deletion)
+ * subcase 3 | nlink | 0 | >0 | new_gen(creation)
+ *
*/
- if (result == BTRFS_COMPARE_TREE_NEW ||
- result == BTRFS_COMPARE_TREE_CHANGED) {
- u32 nlinks;
-
- nlinks = btrfs_inode_nlink(sctx->left_path->nodes[0], left_ii);
- if (nlinks == 0) {
+ if (result == BTRFS_COMPARE_TREE_NEW) {
+ if (btrfs_inode_nlink(sctx->left_path->nodes[0], left_ii) == 0) {
sctx->ignore_cur_inode = true;
- if (result == BTRFS_COMPARE_TREE_CHANGED)
- ret = btrfs_unlink_all_paths(sctx);
goto out;
}
- }
-
- if (result == BTRFS_COMPARE_TREE_NEW) {
sctx->cur_inode_gen = left_gen;
sctx->cur_inode_new = true;
sctx->cur_inode_deleted = false;
@@ -6616,6 +6644,16 @@ static int changed_inode(struct send_ctx *sctx,
sctx->cur_inode_mode = btrfs_inode_mode(
sctx->right_path->nodes[0], right_ii);
} else if (result == BTRFS_COMPARE_TREE_CHANGED) {
+ u32 new_nlinks, old_nlinks;
+
+ new_nlinks = btrfs_inode_nlink(sctx->left_path->nodes[0], left_ii);
+ old_nlinks = btrfs_inode_nlink(sctx->right_path->nodes[0], right_ii);
+ if (new_nlinks == 0 && old_nlinks == 0) {
+ sctx->ignore_cur_inode = true;
+ goto out;
+ } else if (new_nlinks == 0 || old_nlinks == 0) {
+ sctx->cur_inode_new_gen = 1;
+ }
/*
* We need to do some special handling in case the inode was
* reported as changed with a changed generation number. This
@@ -6642,38 +6680,44 @@ static int changed_inode(struct send_ctx *sctx,
/*
* Now process the inode as if it was new.
*/
- sctx->cur_inode_gen = left_gen;
- sctx->cur_inode_new = true;
- sctx->cur_inode_deleted = false;
- sctx->cur_inode_size = btrfs_inode_size(
- sctx->left_path->nodes[0], left_ii);
- sctx->cur_inode_mode = btrfs_inode_mode(
- sctx->left_path->nodes[0], left_ii);
- sctx->cur_inode_rdev = btrfs_inode_rdev(
- sctx->left_path->nodes[0], left_ii);
- ret = send_create_inode_if_needed(sctx);
- if (ret < 0)
- goto out;
+ if (new_nlinks > 0) {
+ sctx->cur_inode_gen = left_gen;
+ sctx->cur_inode_new = true;
+ sctx->cur_inode_deleted = false;
+ sctx->cur_inode_size = btrfs_inode_size(
+ sctx->left_path->nodes[0],
+ left_ii);
+ sctx->cur_inode_mode = btrfs_inode_mode(
+ sctx->left_path->nodes[0],
+ left_ii);
+ sctx->cur_inode_rdev = btrfs_inode_rdev(
+ sctx->left_path->nodes[0],
+ left_ii);
+ ret = send_create_inode_if_needed(sctx);
+ if (ret < 0)
+ goto out;
- ret = process_all_refs(sctx, BTRFS_COMPARE_TREE_NEW);
- if (ret < 0)
- goto out;
- /*
- * Advance send_progress now as we did not get into
- * process_recorded_refs_if_needed in the new_gen case.
- */
- sctx->send_progress = sctx->cur_ino + 1;
+ ret = process_all_refs(sctx, BTRFS_COMPARE_TREE_NEW);
+ if (ret < 0)
+ goto out;
+ /*
+ * Advance send_progress now as we did not get
+ * into process_recorded_refs_if_needed in the
+ * new_gen case.
+ */
+ sctx->send_progress = sctx->cur_ino + 1;
- /*
- * Now process all extents and xattrs of the inode as if
- * they were all new.
- */
- ret = process_all_extents(sctx);
- if (ret < 0)
- goto out;
- ret = process_all_new_xattrs(sctx);
- if (ret < 0)
- goto out;
+ /*
+ * Now process all extents and xattrs of the
+ * inode as if they were all new.
+ */
+ ret = process_all_extents(sctx);
+ if (ret < 0)
+ goto out;
+ ret = process_all_new_xattrs(sctx);
+ if (ret < 0)
+ goto out;
+ }
} else {
sctx->cur_inode_gen = left_gen;
sctx->cur_inode_new = false;
@@ -6785,18 +6829,27 @@ static int changed_extent(struct send_ctx *sctx,
return ret;
}
+static int changed_verity(struct send_ctx *sctx, enum btrfs_compare_tree_result result)
+{
+ int ret = 0;
+
+ if (!sctx->cur_inode_new_gen && !sctx->cur_inode_deleted) {
+ if (result == BTRFS_COMPARE_TREE_NEW)
+ sctx->cur_inode_needs_verity = true;
+ }
+ return ret;
+}
+
static int dir_changed(struct send_ctx *sctx, u64 dir)
{
u64 orig_gen, new_gen;
int ret;
- ret = get_inode_info(sctx->send_root, dir, NULL, &new_gen, NULL, NULL,
- NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->send_root, dir, &new_gen);
if (ret)
return ret;
- ret = get_inode_info(sctx->parent_root, dir, NULL, &orig_gen, NULL,
- NULL, NULL, NULL, NULL);
+ ret = get_inode_gen(sctx->parent_root, dir, &orig_gen);
if (ret)
return ret;
@@ -6939,6 +6992,9 @@ static int changed_cb(struct btrfs_path *left_path,
ret = changed_xattr(sctx, result);
else if (key->type == BTRFS_EXTENT_DATA_KEY)
ret = changed_extent(sctx, result);
+ else if (key->type == BTRFS_VERITY_DESC_ITEM_KEY &&
+ key->offset == 0)
+ ret = changed_verity(sctx, result);
}
out:
@@ -8036,6 +8092,7 @@ out:
kvfree(sctx->clone_roots);
kfree(sctx->send_buf_pages);
kvfree(sctx->send_buf);
+ kvfree(sctx->verity_descriptor);
name_cache_free(sctx);