f2fs: use generic EFSBADCRC/EFSCORRUPTED

f2fs uses EFAULT as error number to indicate filesystem is corrupted
all the time, but generic filesystems use EUCLEAN for such condition,
we need to change to follow others.

This patch adds two new macros as below to wrap more generic error
code macros, and spread them in code.

EFSBADCRC	EBADMSG		/* Bad CRC detected */
EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/checkpoint.c

@@ -890,6 +890,7 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 	unsigned int cp_blks = 1 + __cp_payload(sbi);
 	block_t cp_blk_no;
 	int i;
+	int err;
 
 	sbi->ckpt = f2fs_kzalloc(sbi, array_size(blk_size, cp_blks),
 				 GFP_KERNEL);
@@ -917,6 +918,7 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 	} else if (cp2) {
 		cur_page = cp2;
 	} else {
+		err = -EFSCORRUPTED;
 		goto fail_no_cp;
 	}
 
@@ -929,8 +931,10 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 		sbi->cur_cp_pack = 2;
 
 	/* Sanity checking of checkpoint */
-	if (f2fs_sanity_check_ckpt(sbi))
+	if (f2fs_sanity_check_ckpt(sbi)) {
+		err = -EFSCORRUPTED;
 		goto free_fail_no_cp;
+	}
 
 	if (cp_blks <= 1)
 		goto done;
@@ -944,8 +948,10 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 		unsigned char *ckpt = (unsigned char *)sbi->ckpt;
 
 		cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
-		if (IS_ERR(cur_page))
+		if (IS_ERR(cur_page)) {
+			err = PTR_ERR(cur_page);
 			goto free_fail_no_cp;
+		}
 		sit_bitmap_ptr = page_address(cur_page);
 		memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
 		f2fs_put_page(cur_page, 1);
@@ -960,7 +966,7 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 	f2fs_put_page(cp2, 1);
 fail_no_cp:
 	kvfree(sbi->ckpt);
-	return -EINVAL;
+	return err;
 }
 
 static void __add_dirty_inode(struct inode *inode, enum inode_type type)

fs/f2fs/data.c

@@ -455,7 +455,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
 	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
 			fio->is_por ? META_POR : (__is_meta_io(fio) ?
 			META_GENERIC : DATA_GENERIC_ENHANCE)))
-		return -EFAULT;
+		return -EFSCORRUPTED;
 
 	trace_f2fs_submit_page_bio(page, fio);
 	f2fs_trace_ios(fio, 0);
@@ -489,7 +489,7 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
 
 	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
 			__is_meta_io(fio) ? META_GENERIC : DATA_GENERIC))
-		return -EFAULT;
+		return -EFSCORRUPTED;
 
 	trace_f2fs_submit_page_bio(page, fio);
 	f2fs_trace_ios(fio, 0);
@@ -789,7 +789,7 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 		dn.data_blkaddr = ei.blk + index - ei.fofs;
 		if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE_READ)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto put_err;
 		}
 		goto got_it;
@@ -809,7 +809,7 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 			!f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
 						dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE)) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto put_err;
 	}
 got_it:
@@ -1155,7 +1155,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
 
 	if (__is_valid_data_blkaddr(blkaddr) &&
 		!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto sync_out;
 	}
 
@@ -1625,7 +1625,7 @@ static int f2fs_read_single_page(struct inode *inode, struct page *page,
 
 		if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr,
 						DATA_GENERIC_ENHANCE_READ)) {
-			ret = -EFAULT;
+			ret = -EFSCORRUPTED;
 			goto out;
 		}
 	} else {
@@ -1906,7 +1906,7 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 
 		if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
 						DATA_GENERIC_ENHANCE))
-			return -EFAULT;
+			return -EFSCORRUPTED;
 
 		ipu_force = true;
 		fio->need_lock = LOCK_DONE;
@@ -1933,7 +1933,7 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 	if (__is_valid_data_blkaddr(fio->old_blkaddr) &&
 		!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
 						DATA_GENERIC_ENHANCE)) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto out_writepage;
 	}
 	/*
@@ -2606,7 +2606,7 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
 	} else {
 		if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
 				DATA_GENERIC_ENHANCE_READ)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto fail;
 		}
 		err = f2fs_submit_page_read(inode, page, blkaddr);

fs/f2fs/dir.c

@@ -818,7 +818,7 @@ int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
 			f2fs_warn(sbi, "%s: corrupted namelen=%d, run fsck to fix.",
 				  __func__, le16_to_cpu(de->name_len));
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			err = -EINVAL;
+			err = -EFSCORRUPTED;
 			goto out;
 		}
 

fs/f2fs/f2fs.h

@@ -3708,4 +3708,7 @@ static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
 	return false;
 }
 
+#define EFSBADCRC	EBADMSG		/* Bad CRC detected */
+#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
+
 #endif /* _LINUX_F2FS_H */

fs/f2fs/file.c

@@ -1023,7 +1023,7 @@ static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
 			!f2fs_is_valid_blkaddr(sbi, *blkaddr,
 					DATA_GENERIC_ENHANCE)) {
 			f2fs_put_dnode(&dn);
-			return -EFAULT;
+			return -EFSCORRUPTED;
 		}
 
 		if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {

fs/f2fs/gc.c

@@ -660,7 +660,7 @@ static int ra_data_block(struct inode *inode, pgoff_t index)
 		dn.data_blkaddr = ei.blk + index - ei.fofs;
 		if (unlikely(!f2fs_is_valid_blkaddr(sbi, dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE_READ))) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto put_page;
 		}
 		goto got_it;
@@ -678,7 +678,7 @@ static int ra_data_block(struct inode *inode, pgoff_t index)
 	}
 	if (unlikely(!f2fs_is_valid_blkaddr(sbi, dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE))) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto put_page;
 	}
 got_it:
@@ -1454,7 +1454,7 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
 
 	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
 		f2fs_err(sbi, "Should run fsck to repair first.");
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 
 	if (test_opt(sbi, DISABLE_CHECKPOINT)) {

fs/f2fs/inline.c

@@ -142,7 +142,7 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
 		set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
 		f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
 			  __func__, dn->inode->i_ino, dn->data_blkaddr);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 
 	f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
@@ -383,7 +383,7 @@ static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
 		set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
 		f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
 			  __func__, dir->i_ino, dn.data_blkaddr);
-		err = -EINVAL;
+		err = -EFSCORRUPTED;
 		goto out;
 	}
 

fs/f2fs/inode.c

@@ -74,7 +74,7 @@ static int __written_first_block(struct f2fs_sb_info *sbi,
 	if (!__is_valid_data_blkaddr(addr))
 		return 1;
 	if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE))
-		return -EFAULT;
+		return -EFSCORRUPTED;
 	return 0;
 }
 
@@ -358,7 +358,7 @@ static int do_read_inode(struct inode *inode)
 
 	if (!sanity_check_inode(inode, node_page)) {
 		f2fs_put_page(node_page, 1);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 
 	/* check data exist */

fs/f2fs/node.c

@@ -36,7 +36,7 @@ int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.",
 			  __func__, nid);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 	return 0;
 }
@@ -1288,7 +1288,7 @@ static int read_node_page(struct page *page, int op_flags)
 	if (PageUptodate(page)) {
 		if (!f2fs_inode_chksum_verify(sbi, page)) {
 			ClearPageUptodate(page);
-			return -EBADMSG;
+			return -EFSBADCRC;
 		}
 		return LOCKED_PAGE;
 	}
@@ -1372,7 +1372,7 @@ static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
 	}
 
 	if (!f2fs_inode_chksum_verify(sbi, page)) {
-		err = -EBADMSG;
+		err = -EFSBADCRC;
 		goto out_err;
 	}
 page_hit:

fs/f2fs/recovery.c

@@ -553,7 +553,7 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
 		f2fs_warn(sbi, "Inconsistent ofs_of_node, ino:%lu, ofs:%u, %u",
 			  inode->i_ino, ofs_of_node(dn.node_page),
 			  ofs_of_node(page));
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto err;
 	}
 
@@ -565,13 +565,13 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
 
 		if (__is_valid_data_blkaddr(src) &&
 			!f2fs_is_valid_blkaddr(sbi, src, META_POR)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto err;
 		}
 
 		if (__is_valid_data_blkaddr(dest) &&
 			!f2fs_is_valid_blkaddr(sbi, dest, META_POR)) {
-			err = -EFAULT;
+			err = -EFSCORRUPTED;
 			goto err;
 		}
 

fs/f2fs/segment.c

@@ -2819,7 +2819,7 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
 
 	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
 		f2fs_warn(sbi, "Found FS corruption, run fsck to fix.");
-		return -EIO;
+		return -EFSCORRUPTED;
 	}
 
 	/* start/end segment number in main_area */
@@ -3244,7 +3244,7 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.",
 			  __func__, segno);
-		return -EFAULT;
+		return -EFSCORRUPTED;
 	}
 
 	stat_inc_inplace_blocks(fio->sbi);
@@ -4153,7 +4153,7 @@ static int build_sit_entries(struct f2fs_sb_info *sbi)
 			f2fs_err(sbi, "Wrong journal entry on segno %u",
 				 start);
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			err = -EINVAL;
+			err = -EFSCORRUPTED;
 			break;
 		}
 
@@ -4193,7 +4193,7 @@ static int build_sit_entries(struct f2fs_sb_info *sbi)
 		f2fs_err(sbi, "SIT is corrupted node# %u vs %u",
 			 total_node_blocks, valid_node_count(sbi));
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		err = -EINVAL;
+		err = -EFSCORRUPTED;
 	}
 
 	return err;
@@ -4311,7 +4311,7 @@ static int sanity_check_curseg(struct f2fs_sb_info *sbi)
 				 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
 				 i, curseg->segno, curseg->alloc_type,
 				 curseg->next_blkoff, blkofs);
-			return -EINVAL;
+			return -EFSCORRUPTED;
 		}
 	}
 	return 0;

fs/f2fs/segment.h

@@ -696,7 +696,7 @@ static inline int check_block_count(struct f2fs_sb_info *sbi,
 		f2fs_err(sbi, "Mismatch valid blocks %d vs. %d",
 			 GET_SIT_VBLOCKS(raw_sit), valid_blocks);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 
 	/* check segment usage, and check boundary of a given segment number */
@@ -705,7 +705,7 @@ static inline int check_block_count(struct f2fs_sb_info *sbi,
 		f2fs_err(sbi, "Wrong valid blocks %d or segno %u",
 			 GET_SIT_VBLOCKS(raw_sit), segno);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		return -EINVAL;
+		return -EFSCORRUPTED;
 	}
 	return 0;
 }

fs/f2fs/super.c

@@ -2846,7 +2846,7 @@ static int read_raw_super_block(struct f2fs_sb_info *sbi,
 		if (sanity_check_raw_super(sbi, bh)) {
 			f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
 				 block + 1);
-			err = -EINVAL;
+			err = -EFSCORRUPTED;
 			brelse(bh);
 			continue;
 		}

fs/f2fs/xattr.c

@@ -346,7 +346,7 @@ static int lookup_all_xattrs(struct inode *inode, struct page *ipage,
 
 	*xe = __find_xattr(cur_addr, last_txattr_addr, index, len, name);
 	if (!*xe) {
-		err = -EFAULT;
+		err = -EFSCORRUPTED;
 		goto out;
 	}
 check:
@@ -622,7 +622,7 @@ static int __f2fs_setxattr(struct inode *inode, int index,
 	/* find entry with wanted name. */
 	here = __find_xattr(base_addr, last_base_addr, index, len, name);
 	if (!here) {
-		error = -EFAULT;
+		error = -EFSCORRUPTED;
 		goto exit;
 	}