diff options
Diffstat (limited to 'fs/xfs/xfs_sb.c')
| -rw-r--r-- | fs/xfs/xfs_sb.c | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c index a5b59d92eb7..b7c9aea77f8 100644 --- a/fs/xfs/xfs_sb.c +++ b/fs/xfs/xfs_sb.c @@ -17,34 +17,26 @@ */ #include "xfs.h" #include "xfs_fs.h" +#include "xfs_shared.h" #include "xfs_format.h" +#include "xfs_log_format.h" +#include "xfs_trans_resv.h" #include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_trans_priv.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" -#include "xfs_da_btree.h" -#include "xfs_dir2_format.h" -#include "xfs_dir2.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dinode.h" #include "xfs_inode.h" -#include "xfs_btree.h" #include "xfs_ialloc.h" #include "xfs_alloc.h" -#include "xfs_rtalloc.h" -#include "xfs_bmap.h" #include "xfs_error.h" -#include "xfs_quota.h" -#include "xfs_fsops.h" #include "xfs_trace.h" #include "xfs_cksum.h" +#include "xfs_trans.h" #include "xfs_buf_item.h" +#include "xfs_dinode.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" /* * Physical superblock buffer manipulations. Shared with libxfs in userspace. @@ -249,13 +241,13 @@ xfs_mount_validate_sb( if (xfs_sb_version_has_pquotino(sbp)) { if (sbp->sb_qflags & (XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD)) { xfs_notice(mp, - "Version 5 of Super block has XFS_OQUOTA bits.\n"); + "Version 5 of Super block has XFS_OQUOTA bits."); return XFS_ERROR(EFSCORRUPTED); } } else if (sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) { xfs_notice(mp, -"Superblock earlier than Version 5 has XFS_[PQ]UOTA_{ENFD|CHKD} bits.\n"); +"Superblock earlier than Version 5 has XFS_[PQ]UOTA_{ENFD|CHKD} bits."); return XFS_ERROR(EFSCORRUPTED); } @@ -596,6 +588,11 @@ xfs_sb_verify( * single bit error could clear the feature bit and unused parts of the * superblock are supposed to be zero. Hence a non-null crc field indicates that * we've potentially lost a feature bit and we should check it anyway. + * + * However, past bugs (i.e. in growfs) left non-zeroed regions beyond the + * last field in V4 secondary superblocks. So for secondary superblocks, + * we are more forgiving, and ignore CRC failures if the primary doesn't + * indicate that the fs version is V5. */ static void xfs_sb_read_verify( @@ -616,16 +613,21 @@ xfs_sb_read_verify( if (!xfs_verify_cksum(bp->b_addr, be16_to_cpu(dsb->sb_sectsize), offsetof(struct xfs_sb, sb_crc))) { - error = EFSCORRUPTED; - goto out_error; + /* Only fail bad secondaries on a known V5 filesystem */ + if (bp->b_bn != XFS_SB_DADDR && + xfs_sb_version_hascrc(&mp->m_sb)) { + error = EFSCORRUPTED; + goto out_error; + } } } error = xfs_sb_verify(bp, true); out_error: if (error) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - mp, bp->b_addr); + if (error != EWRONGFS) + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, + mp, bp->b_addr); xfs_buf_ioerror(bp, error); } } |