+struct ext4_err_translation {
+ int code;
+ int errno;
+};
+
+#define EXT4_ERR_TRANSLATE(err) { .code = EXT4_ERR_##err, .errno = err }
+
+static struct ext4_err_translation err_translation[] = {
+ EXT4_ERR_TRANSLATE(EIO),
+ EXT4_ERR_TRANSLATE(ENOMEM),
+ EXT4_ERR_TRANSLATE(EFSBADCRC),
+ EXT4_ERR_TRANSLATE(EFSCORRUPTED),
+ EXT4_ERR_TRANSLATE(ENOSPC),
+ EXT4_ERR_TRANSLATE(ENOKEY),
+ EXT4_ERR_TRANSLATE(EROFS),
+ EXT4_ERR_TRANSLATE(EFBIG),
+ EXT4_ERR_TRANSLATE(EEXIST),
+ EXT4_ERR_TRANSLATE(ERANGE),
+ EXT4_ERR_TRANSLATE(EOVERFLOW),
+ EXT4_ERR_TRANSLATE(EBUSY),
+ EXT4_ERR_TRANSLATE(ENOTDIR),
+ EXT4_ERR_TRANSLATE(ENOTEMPTY),
+ EXT4_ERR_TRANSLATE(ESHUTDOWN),
+ EXT4_ERR_TRANSLATE(EFAULT),
+};
+
+static int ext4_errno_to_code(int errno)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(err_translation); i++)
+ if (err_translation[i].errno == errno)
+ return err_translation[i].code;
+ return EXT4_ERR_UNKNOWN;
+}
+
+static void __save_error_info(struct super_block *sb, int error,
+ __u32 ino, __u64 block,
+ const char *func, unsigned int line)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
+ if (bdev_read_only(sb->s_bdev))
+ return;
+ /* We default to EFSCORRUPTED error... */
+ if (error == 0)
+ error = EFSCORRUPTED;
+
+ spin_lock(&sbi->s_error_lock);
+ sbi->s_add_error_count++;
+ sbi->s_last_error_code = error;
+ sbi->s_last_error_line = line;
+ sbi->s_last_error_ino = ino;
+ sbi->s_last_error_block = block;
+ sbi->s_last_error_func = func;
+ sbi->s_last_error_time = ktime_get_real_seconds();
+ if (!sbi->s_first_error_time) {
+ sbi->s_first_error_code = error;
+ sbi->s_first_error_line = line;
+ sbi->s_first_error_ino = ino;
+ sbi->s_first_error_block = block;
+ sbi->s_first_error_func = func;
+ sbi->s_first_error_time = sbi->s_last_error_time;
+ }
+ spin_unlock(&sbi->s_error_lock);
+}
+
+static void save_error_info(struct super_block *sb, int error,
+ __u32 ino, __u64 block,
+ const char *func, unsigned int line)
+{
+ __save_error_info(sb, error, ino, block, func, line);
+ if (!bdev_read_only(sb->s_bdev))
+ ext4_commit_super(sb, 1);
+}
+