diff options
| -rw-r--r-- | fs/xfs/xfs_sb.h | 166 |
1 files changed, 86 insertions, 80 deletions
diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 3f8cf1587f4c..e123c1499b4c 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -296,30 +296,34 @@ typedef enum { #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS) -#ifdef __KERNEL__ static inline int xfs_sb_good_version(xfs_sb_t *sbp) { - return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ - (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ - ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ - ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ - (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ - (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))); -} + /* We always support version 1-3 */ + if (sbp->sb_versionnum >= XFS_SB_VERSION_1 && + sbp->sb_versionnum <= XFS_SB_VERSION_3) + return 1; + + /* We support version 4 if all feature bits are supported */ + if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) { + if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || + ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && + (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) + return 0; + +#ifdef __KERNEL__ + if (sbp->sb_shared_vn > XFS_SB_MAX_SHARED_VN) + return 0; #else -static inline int xfs_sb_good_version(xfs_sb_t *sbp) -{ - return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ - (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ - ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ - ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ - (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ - (!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \ - (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)))); + if ((sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) && + sbp->sb_shared_vn > XFS_SB_MAX_SHARED_VN) + return 0; +#endif + + return 1; + } + + return 0; } -#endif /* __KERNEL__ */ /* * Detect a mismatched features2 field. Older kernels read/wrote @@ -332,123 +336,127 @@ static inline int xfs_sb_has_mismatched_features2(xfs_sb_t *sbp) static inline unsigned xfs_sb_version_tonew(unsigned v) { - return ((((v) == XFS_SB_VERSION_1) ? \ - 0 : \ - (((v) == XFS_SB_VERSION_2) ? \ - XFS_SB_VERSION_ATTRBIT : \ - (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \ - XFS_SB_VERSION_4); + if (v == XFS_SB_VERSION_1) + return XFS_SB_VERSION_4; + + if (v == XFS_SB_VERSION_2) + return XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT; + + return XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT | + XFS_SB_VERSION_NLINKBIT; } static inline unsigned xfs_sb_version_toold(unsigned v) { - return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \ - 0 : \ - (((v) & XFS_SB_VERSION_NLINKBIT) ? \ - XFS_SB_VERSION_3 : \ - (((v) & XFS_SB_VERSION_ATTRBIT) ? \ - XFS_SB_VERSION_2 : \ - XFS_SB_VERSION_1))); + if (v & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) + return 0; + if (v & XFS_SB_VERSION_NLINKBIT) + return XFS_SB_VERSION_3; + if (v & XFS_SB_VERSION_ATTRBIT) + return XFS_SB_VERSION_2; + return XFS_SB_VERSION_1; } static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp) { - return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \ - ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ - ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)); + return sbp->sb_versionnum == XFS_SB_VERSION_2 || + sbp->sb_versionnum == XFS_SB_VERSION_3 || + (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT)); } static inline void xfs_sb_version_addattr(xfs_sb_t *sbp) { - (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \ - XFS_SB_VERSION_2 : \ - ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \ - (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))); + if (sbp->sb_versionnum == XFS_SB_VERSION_1) + sbp->sb_versionnum = XFS_SB_VERSION_2; + else if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) + sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT; + else + sbp->sb_versionnum = XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT; } static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp) { - return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ - ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)); + return sbp->sb_versionnum == XFS_SB_VERSION_3 || + (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT)); } static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp) { - (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \ - XFS_SB_VERSION_3 : \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)); + if (sbp->sb_versionnum <= XFS_SB_VERSION_2) + sbp->sb_versionnum = XFS_SB_VERSION_3; + else + sbp->sb_versionnum |= XFS_SB_VERSION_NLINKBIT; } static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT); } static inline void xfs_sb_version_addquota(xfs_sb_t *sbp) { - (sbp)->sb_versionnum = \ - (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \ - (xfs_sb_version_tonew((sbp)->sb_versionnum) | \ - XFS_SB_VERSION_QUOTABIT)); + if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) + sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT; + else + sbp->sb_versionnum = xfs_sb_version_tonew(sbp->sb_versionnum) | + XFS_SB_VERSION_QUOTABIT; } static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT); } static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); } static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT); } static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT); } static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT); } static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT); } static inline int xfs_sb_version_hassector(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT); } static inline int xfs_sb_version_hasasciici(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT); } static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && + (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT); } /* @@ -463,22 +471,20 @@ static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp) static inline int xfs_sb_version_haslazysbcount(xfs_sb_t *sbp) { - return (xfs_sb_version_hasmorebits(sbp) && \ - ((sbp)->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT)); + return xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT); } static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp) { - return (xfs_sb_version_hasmorebits(sbp)) && \ - ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT); + return xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT); } static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp) { - ((sbp)->sb_versionnum = \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \ - ((sbp)->sb_features2 = \ - ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT))); + sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT; + sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT; } static inline void xfs_sb_version_removeattr2(xfs_sb_t *sbp) |