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Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/send.c30
1 files changed, 23 insertions, 7 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 15cdc67..6528aa6 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -975,7 +975,7 @@ static int iterate_dir_item(struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_dir_item *di;
struct btrfs_key di_key;
char *buf = NULL;
- const int buf_len = PATH_MAX;
+ int buf_len;
u32 name_len;
u32 data_len;
u32 cur;
@@ -985,6 +985,11 @@ static int iterate_dir_item(struct btrfs_root *root, struct btrfs_path *path,
int num;
u8 type;
+ if (found_key->type == BTRFS_XATTR_ITEM_KEY)
+ buf_len = BTRFS_MAX_XATTR_SIZE(root);
+ else
+ buf_len = PATH_MAX;
+
buf = kmalloc(buf_len, GFP_NOFS);
if (!buf) {
ret = -ENOMEM;
@@ -1006,12 +1011,23 @@ static int iterate_dir_item(struct btrfs_root *root, struct btrfs_path *path,
type = btrfs_dir_type(eb, di);
btrfs_dir_item_key_to_cpu(eb, di, &di_key);
- /*
- * Path too long
- */
- if (name_len + data_len > buf_len) {
- ret = -ENAMETOOLONG;
- goto out;
+ if (type == BTRFS_FT_XATTR) {
+ if (name_len > XATTR_NAME_MAX) {
+ ret = -ENAMETOOLONG;
+ goto out;
+ }
+ if (name_len + data_len > buf_len) {
+ ret = -E2BIG;
+ goto out;
+ }
+ } else {
+ /*
+ * Path too long
+ */
+ if (name_len + data_len > buf_len) {
+ ret = -ENAMETOOLONG;
+ goto out;
+ }
}
read_extent_buffer(eb, buf, (unsigned long)(di + 1),