From: Baokun Li Date: Fri, 17 Feb 2023 10:09:22 +0000 (+0800) Subject: tune2fs/fuse2fs/debugfs: save error information during journal replay X-Git-Tag: v1.47.1-rc1~79 X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=d5296ff0c665c1f957252ee18f824ad666a34b78;p=tools%2Fe2fsprogs.git tune2fs/fuse2fs/debugfs: save error information during journal replay Saving error information during journal replay, as in the kernel, prevents information loss from making problems difficult to locate. We save these error information until someone uses e2fsck to check for and fix possible errors. Signed-off-by: Baokun Li Reviewed-by: zhanchengbin Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20230217100922.588961-3-libaokun1@huawei.com Signed-off-by: Theodore Ts'o --- diff --git a/debugfs/journal.c b/debugfs/journal.c index 5bac0d3..79e3fff 100644 --- a/debugfs/journal.c +++ b/debugfs/journal.c @@ -789,6 +789,8 @@ errcode_t ext2fs_run_ext3_journal(ext2_filsys *fsp) char *fsname; int fsflags; int fsblocksize; + char *save; + __u16 s_error_state; if (!(fs->flags & EXT2_FLAG_RW)) return EXT2_ET_FILE_RO; @@ -808,6 +810,12 @@ errcode_t ext2fs_run_ext3_journal(ext2_filsys *fsp) if (stats && stats->bytes_written) kbytes_written = stats->bytes_written >> 10; + save = malloc(EXT4_S_ERR_LEN); + if (save) + memcpy(save, ((char *) fs->super) + EXT4_S_ERR_START, + EXT4_S_ERR_LEN); + s_error_state = fs->super->s_state & EXT2_ERROR_FS; + ext2fs_mmp_stop(fs); fsname = fs->device_name; fs->device_name = NULL; @@ -818,11 +826,15 @@ errcode_t ext2fs_run_ext3_journal(ext2_filsys *fsp) retval = ext2fs_open(fsname, fsflags, 0, fsblocksize, io_ptr, fsp); ext2fs_free_mem(&fsname); if (retval) - return retval; + goto outfree; fs = *fsp; fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; fs->super->s_kbytes_written += kbytes_written; + fs->super->s_state |= s_error_state; + if (save) + memcpy(((char *) fs->super) + EXT4_S_ERR_START, save, + EXT4_S_ERR_LEN); /* Set the superblock flags */ ext2fs_clear_recover(fs, recover_retval != 0); @@ -832,6 +844,9 @@ errcode_t ext2fs_run_ext3_journal(ext2_filsys *fsp) * the EXT2_ERROR_FS flag in the fs superblock if needed. */ retval = ext2fs_check_ext3_journal(fs); + +outfree: + free(save); return retval ? retval : recover_retval; }