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| author | Theodore Ts'o <tytso@mit.edu> | 2019-11-19 21:54:15 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2019-12-26 11:28:23 -0500 |
| commit | 878520ac45f9f698432d4276db3d9144b83931b6 (patch) | |
| tree | 4d2eb8c8fd49bd852ca2be77e53798fa4b19dbdd /fs/ext4/ext4.h | |
| parent | a562c687d115fe5a90be1e27745cc771c1e6cbd9 (diff) | |
| download | linux-878520ac45f9f698432d4276db3d9144b83931b6.tar.bz2 | |
ext4: save the error code which triggered an ext4_error() in the superblock
This allows the cause of an ext4_error() report to be categorized
based on whether it was triggered due to an I/O error, or an memory
allocation error, or other possible causes. Most errors are caused by
a detected file system inconsistency, so the default code stored in
the superblock will be EXT4_ERR_EFSCORRUPTED.
Link: https://lore.kernel.org/r/20191204032335.7683-1-tytso@mit.edu
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index f8578caba40d..b00d07bad45b 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1343,7 +1343,8 @@ struct ext4_super_block { __u8 s_lastcheck_hi; __u8 s_first_error_time_hi; __u8 s_last_error_time_hi; - __u8 s_pad[2]; + __u8 s_first_error_errcode; + __u8 s_last_error_errcode; __le16 s_encoding; /* Filename charset encoding */ __le16 s_encoding_flags; /* Filename charset encoding flags */ __le32 s_reserved[95]; /* Padding to the end of the block */ @@ -1575,6 +1576,32 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino) } /* + * Error number codes for s_{first,last}_error_errno + * + * Linux errno numbers are architecture specific, so we need to translate + * them into something which is architecture independent. We don't define + * codes for all errno's; just the ones which are most likely to be the cause + * of an ext4_error() call. + */ +#define EXT4_ERR_UNKNOWN 1 +#define EXT4_ERR_EIO 2 +#define EXT4_ERR_ENOMEM 3 +#define EXT4_ERR_EFSBADCRC 4 +#define EXT4_ERR_EFSCORRUPTED 5 +#define EXT4_ERR_ENOSPC 6 +#define EXT4_ERR_ENOKEY 7 +#define EXT4_ERR_EROFS 8 +#define EXT4_ERR_EFBIG 9 +#define EXT4_ERR_EEXIST 10 +#define EXT4_ERR_ERANGE 11 +#define EXT4_ERR_EOVERFLOW 12 +#define EXT4_ERR_EBUSY 13 +#define EXT4_ERR_ENOTDIR 14 +#define EXT4_ERR_ENOTEMPTY 15 +#define EXT4_ERR_ESHUTDOWN 16 +#define EXT4_ERR_EFAULT 17 + +/* * Inode dynamic state flags */ enum { @@ -2688,6 +2715,7 @@ extern const char *ext4_decode_error(struct super_block *sb, int errno, extern void ext4_mark_group_bitmap_corrupted(struct super_block *sb, ext4_group_t block_group, unsigned int flags); +extern void ext4_set_errno(struct super_block *sb, int err); extern __printf(4, 5) void __ext4_error(struct super_block *, const char *, unsigned int, |