fs/ntfs3: Unify inode corruption marking with _ntfs_bad_inode()

BugLink: https://bugs.launchpad.net/bugs/2104873

[ Upstream commit 55ad333 ]

Also reworked error handling in a couple of places.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Noah Wager <noah.wager@canonical.com>

Author: aalexandrovich

fs/ntfs3/attrib.c

@@ -1406,7 +1406,7 @@ int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr,
 	 */
 	if (!attr->non_res) {
 		if (vbo[1] + bytes_per_off > le32_to_cpu(attr->res.data_size)) {
-			ntfs_inode_err(&ni->vfs_inode, "is corrupted");
+			_ntfs_bad_inode(&ni->vfs_inode);
 			return -EINVAL;
 		}
 		addr = resident_data(attr);
@@ -2587,7 +2587,7 @@ int attr_force_nonresident(struct ntfs_inode *ni)
 
 	attr = ni_find_attr(ni, NULL, &le, ATTR_DATA, NULL, 0, NULL, &mi);
 	if (!attr) {
-		ntfs_bad_inode(&ni->vfs_inode, "no data attribute");
+		_ntfs_bad_inode(&ni->vfs_inode);
 		return -ENOENT;
 	}
 

fs/ntfs3/dir.c

@@ -512,7 +512,7 @@ static int ntfs_readdir(struct file *file, struct dir_context *ctx)
 		ctx->pos = pos;
 	} else if (err < 0) {
 		if (err == -EINVAL)
-			ntfs_inode_err(dir, "directory corrupted");
+			_ntfs_bad_inode(dir);
 		ctx->pos = eod;
 	}
 

fs/ntfs3/frecord.c

@@ -148,8 +148,10 @@ int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi)
 		goto out;
 
 	err = mi_get(ni->mi.sbi, rno, &r);
-	if (err)
+	if (err) {
+		_ntfs_bad_inode(&ni->vfs_inode);
 		return err;
+	}
 
 	ni_add_mi(ni, r);
 
@@ -238,8 +240,7 @@ struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr,
 	return attr;
 
 out:
-	ntfs_inode_err(&ni->vfs_inode, "failed to parse mft record");
-	ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_ERROR);
+	_ntfs_bad_inode(&ni->vfs_inode);
 	return NULL;
 }
 
@@ -330,6 +331,7 @@ struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
 	    vcn <= le64_to_cpu(attr->nres.evcn))
 		return attr;
 
+	_ntfs_bad_inode(&ni->vfs_inode);
 	return NULL;
 }
 
@@ -1604,8 +1606,8 @@ int ni_delete_all(struct ntfs_inode *ni)
 		roff = le16_to_cpu(attr->nres.run_off);
 
 		if (roff > asize) {
-			_ntfs_bad_inode(&ni->vfs_inode);
-			return -EINVAL;
+			/* ni_enum_attr_ex checks this case. */
+			continue;
 		}
 
 		/* run==1 means unpack and deallocate. */

fs/ntfs3/fsntfs.c

@@ -908,7 +908,11 @@ void ntfs_bad_inode(struct inode *inode, const char *hint)
 
 	ntfs_inode_err(inode, "%s", hint);
 	make_bad_inode(inode);
-	ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+	/* Avoid recursion if bad inode is $Volume. */
+	if (inode->i_ino != MFT_REC_VOL &&
+	    !(sbi->flags & NTFS_FLAGS_LOG_REPLAYING)) {
+		ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+	}
 }
 
 /*

fs/ntfs3/index.c

@@ -1094,8 +1094,7 @@ int indx_read(struct ntfs_index *indx, struct ntfs_inode *ni, CLST vbn,
 
 ok:
 	if (!index_buf_check(ib, bytes, &vbn)) {
-		ntfs_inode_err(&ni->vfs_inode, "directory corrupted");
-		ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_ERROR);
+		_ntfs_bad_inode(&ni->vfs_inode);
 		err = -EINVAL;
 		goto out;
 	}
@@ -1117,8 +1116,7 @@ int indx_read(struct ntfs_index *indx, struct ntfs_inode *ni, CLST vbn,
 
 out:
 	if (err == -E_NTFS_CORRUPT) {
-		ntfs_inode_err(&ni->vfs_inode, "directory corrupted");
-		ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_ERROR);
+		_ntfs_bad_inode(&ni->vfs_inode);
 		err = -EINVAL;
 	}
 

fs/ntfs3/inode.c

@@ -410,6 +410,9 @@ static struct inode *ntfs_read_mft(struct inode *inode,
 	if (!std5)
 		goto out;
 
+	if (is_bad_inode(inode))
+		goto out;
+
 	if (!is_match && name) {
 		err = -ENOENT;
 		goto out;