ext4: move call to ext4_error() into ext4_xattr_check_block()

Refactor the call to EXT4_ERROR_INODE() into ext4_xattr_check_block().
This simplifies the code, and fixes a problem where not all callers of
ext4_xattr_check_block() were not resulting in ext4_error() getting
called when the xattr block is corrupted.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org

1 files changed, 27 insertions, 33 deletions

diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 2077d87b09f2..c030e41818ab 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -225,25 +225,36 @@ ext4_xattr_check_entries(struct ext4_xattr_entry *entry, void *end,
 }
 
 static inline int
-ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh)
+__ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh,
+                         const char *function, unsigned int line)
 {
-        int error;
+        int error = -EFSCORRUPTED;
 
         if (buffer_verified(bh))
                 return 0;
 
         if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
             BHDR(bh)->h_blocks != cpu_to_le32(1))
-                return -EFSCORRUPTED;
+                goto errout;
+        error = -EFSBADCRC;
         if (!ext4_xattr_block_csum_verify(inode, bh))
-                return -EFSBADCRC;
+                goto errout;
         error = ext4_xattr_check_entries(BFIRST(bh), bh->b_data + bh->b_size,
                                          bh->b_data);
-        if (!error)
+errout:
+        if (error)
+                __ext4_error_inode(inode, function, line, 0,
+                                   "corrupted xattr block %llu",
+                                   (unsigned long long) bh->b_blocknr);
+        else
                 set_buffer_verified(bh);
         return error;
 }
 
+#define ext4_xattr_check_block(inode, bh) \
+        __ext4_xattr_check_block((inode), (bh),  __func__, __LINE__)
+
+
 static int
 __xattr_check_inode(struct inode *inode, struct ext4_xattr_ibody_header *header,
                          void *end, const char *function, unsigned int line)
@@ -514,12 +525,9 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
                 goto cleanup;
         ea_bdebug(bh, "b_count=%d, refcount=%d",
                 atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
-        if (ext4_xattr_check_block(inode, bh)) {
-                EXT4_ERROR_INODE(inode, "bad block %llu",
-                                 EXT4_I(inode)->i_file_acl);
-                error = -EFSCORRUPTED;
+        error = ext4_xattr_check_block(inode, bh);
+        if (error)
                 goto cleanup;
-        }
         ext4_xattr_block_cache_insert(ea_block_cache, bh);
         entry = BFIRST(bh);
         error = ext4_xattr_find_entry(&entry, name_index, name, 1);
@@ -679,12 +687,9 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
                 goto cleanup;
         ea_bdebug(bh, "b_count=%d, refcount=%d",
                 atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
-        if (ext4_xattr_check_block(inode, bh)) {
-                EXT4_ERROR_INODE(inode, "bad block %llu",
-                                 EXT4_I(inode)->i_file_acl);
-                error = -EFSCORRUPTED;
+        error = ext4_xattr_check_block(inode, bh);
+        if (error)
                 goto cleanup;
-        }
         ext4_xattr_block_cache_insert(EA_BLOCK_CACHE(inode), bh);
         error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer, buffer_size);
 
@@ -811,10 +816,9 @@ int ext4_get_inode_usage(struct inode *inode, qsize_t *usage)
                         goto out;
                 }
 
-                if (ext4_xattr_check_block(inode, bh)) {
-                        ret = -EFSCORRUPTED;
+                ret = ext4_xattr_check_block(inode, bh);
+                if (ret)
                         goto out;
-                }
 
                 for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry);
                      entry = EXT4_XATTR_NEXT(entry))
@@ -1796,12 +1800,9 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
                 ea_bdebug(bs->bh, "b_count=%d, refcount=%d",
                         atomic_read(&(bs->bh->b_count)),
                         le32_to_cpu(BHDR(bs->bh)->h_refcount));
-                if (ext4_xattr_check_block(inode, bs->bh)) {
-                        EXT4_ERROR_INODE(inode, "bad block %llu",
-                                         EXT4_I(inode)->i_file_acl);
-                        error = -EFSCORRUPTED;
+                error = ext4_xattr_check_block(inode, bs->bh);
+                if (error)
                         goto cleanup;
-                }
                 /* Find the named attribute. */
                 bs->s.base = BHDR(bs->bh);
                 bs->s.first = BFIRST(bs->bh);
@@ -2724,13 +2725,9 @@ retry:
                 error = -EIO;
                 if (!bh)
                         goto cleanup;
-                if (ext4_xattr_check_block(inode, bh)) {
-                        EXT4_ERROR_INODE(inode, "bad block %llu",
-                                         EXT4_I(inode)->i_file_acl);
-                        error = -EFSCORRUPTED;
-                        brelse(bh);
+                error = ext4_xattr_check_block(inode, bh);
+                if (error)
                         goto cleanup;
-                }
                 base = BHDR(bh);
                 end = bh->b_data + bh->b_size;
                 min_offs = end - base;
@@ -2887,11 +2884,8 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
                         goto cleanup;
                 }
                 error = ext4_xattr_check_block(inode, bh);
-                if (error) {
-                        EXT4_ERROR_INODE(inode, "bad block %llu (error %d)",
-                                         EXT4_I(inode)->i_file_acl, error);
+                if (error)
                         goto cleanup;
-                }
 
                 if (ext4_has_feature_ea_inode(inode->i_sb)) {
                         for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry);