diff options
Diffstat (limited to 'fs/xfs/xfs_sb.h')
| -rw-r--r-- | fs/xfs/xfs_sb.h | 441 |
1 files changed, 260 insertions, 181 deletions
diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 94660b1a6cc..c43c2d609a2 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -26,16 +26,16 @@ struct xfs_buf; struct xfs_mount; +struct xfs_trans; #define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */ #define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */ #define XFS_SB_VERSION_2 2 /* 6.2 - attributes */ #define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */ #define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */ +#define XFS_SB_VERSION_5 5 /* CRC enabled filesystem */ #define XFS_SB_VERSION_NUMBITS 0x000f #define XFS_SB_VERSION_ALLFBITS 0xfff0 -#define XFS_SB_VERSION_SASHFBITS 0xf000 -#define XFS_SB_VERSION_REALFBITS 0x0ff0 #define XFS_SB_VERSION_ATTRBIT 0x0010 #define XFS_SB_VERSION_NLINKBIT 0x0020 #define XFS_SB_VERSION_QUOTABIT 0x0040 @@ -46,24 +46,17 @@ struct xfs_mount; #define XFS_SB_VERSION_SECTORBIT 0x0800 #define XFS_SB_VERSION_EXTFLGBIT 0x1000 #define XFS_SB_VERSION_DIRV2BIT 0x2000 +#define XFS_SB_VERSION_BORGBIT 0x4000 /* ASCII only case-insens. */ #define XFS_SB_VERSION_MOREBITSBIT 0x8000 -#define XFS_SB_VERSION_OKSASHFBITS \ - (XFS_SB_VERSION_EXTFLGBIT | \ - XFS_SB_VERSION_DIRV2BIT) -#define XFS_SB_VERSION_OKREALFBITS \ - (XFS_SB_VERSION_ATTRBIT | \ - XFS_SB_VERSION_NLINKBIT | \ - XFS_SB_VERSION_QUOTABIT | \ - XFS_SB_VERSION_ALIGNBIT | \ - XFS_SB_VERSION_DALIGNBIT | \ - XFS_SB_VERSION_SHAREDBIT | \ - XFS_SB_VERSION_LOGV2BIT | \ - XFS_SB_VERSION_SECTORBIT | \ - XFS_SB_VERSION_MOREBITSBIT) -#define XFS_SB_VERSION_OKREALBITS \ - (XFS_SB_VERSION_NUMBITS | \ - XFS_SB_VERSION_OKREALFBITS | \ - XFS_SB_VERSION_OKSASHFBITS) + +/* + * Supported feature bit list is just all bits in the versionnum field because + * we've used them all up and understand them all. Except, of course, for the + * shared superblock bit, which nobody knows what it does and so is unsupported. + */ +#define XFS_SB_VERSION_OKBITS \ + ((XFS_SB_VERSION_NUMBITS | XFS_SB_VERSION_ALLFBITS) & \ + ~XFS_SB_VERSION_SHAREDBIT) /* * There are two words to hold XFS "feature" bits: the original @@ -72,23 +65,24 @@ struct xfs_mount; * * These defines represent bits in sb_features2. */ -#define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */ #define XFS_SB_VERSION2_RESERVED1BIT 0x00000001 #define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002 /* Superblk counters */ #define XFS_SB_VERSION2_RESERVED4BIT 0x00000004 #define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */ +#define XFS_SB_VERSION2_PARENTBIT 0x00000010 /* parent pointers */ +#define XFS_SB_VERSION2_PROJID32BIT 0x00000080 /* 32 bit project id */ +#define XFS_SB_VERSION2_CRCBIT 0x00000100 /* metadata CRCs */ +#define XFS_SB_VERSION2_FTYPE 0x00000200 /* inode type in dir */ -#define XFS_SB_VERSION2_OKREALFBITS \ +#define XFS_SB_VERSION2_OKBITS \ (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \ - XFS_SB_VERSION2_ATTR2BIT) -#define XFS_SB_VERSION2_OKSASHFBITS \ - (0) -#define XFS_SB_VERSION2_OKREALBITS \ - (XFS_SB_VERSION2_OKREALFBITS | \ - XFS_SB_VERSION2_OKSASHFBITS ) + XFS_SB_VERSION2_ATTR2BIT | \ + XFS_SB_VERSION2_PROJID32BIT | \ + XFS_SB_VERSION2_FTYPE) /* * Superblock - in core version. Must match the ondisk version below. + * Must be padded to 64 bit alignment. */ typedef struct xfs_sb { __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */ @@ -145,10 +139,37 @@ typedef struct xfs_sb { __uint16_t sb_logsectsize; /* sector size for the log, bytes */ __uint32_t sb_logsunit; /* stripe unit size for the log */ __uint32_t sb_features2; /* additional feature bits */ + + /* + * bad features2 field as a result of failing to pad the sb + * structure to 64 bits. Some machines will be using this field + * for features2 bits. Easiest just to mark it bad and not use + * it for anything else. + */ + __uint32_t sb_bad_features2; + + /* version 5 superblock fields start here */ + + /* feature masks */ + __uint32_t sb_features_compat; + __uint32_t sb_features_ro_compat; + __uint32_t sb_features_incompat; + __uint32_t sb_features_log_incompat; + + __uint32_t sb_crc; /* superblock crc */ + __uint32_t sb_pad; + + xfs_ino_t sb_pquotino; /* project quota inode */ + xfs_lsn_t sb_lsn; /* last write sequence */ + + /* must be padded to 64 bit alignment */ } xfs_sb_t; +#define XFS_SB_CRC_OFF offsetof(struct xfs_sb, sb_crc) + /* - * Superblock - on disk version. Must match the in core version below. + * Superblock - on disk version. Must match the in core version above. + * Must be padded to 64 bit alignment. */ typedef struct xfs_dsb { __be32 sb_magicnum; /* magic number == XFS_SB_MAGIC */ @@ -205,6 +226,29 @@ typedef struct xfs_dsb { __be16 sb_logsectsize; /* sector size for the log, bytes */ __be32 sb_logsunit; /* stripe unit size for the log */ __be32 sb_features2; /* additional feature bits */ + /* + * bad features2 field as a result of failing to pad the sb + * structure to 64 bits. Some machines will be using this field + * for features2 bits. Easiest just to mark it bad and not use + * it for anything else. + */ + __be32 sb_bad_features2; + + /* version 5 superblock fields start here */ + + /* feature masks */ + __be32 sb_features_compat; + __be32 sb_features_ro_compat; + __be32 sb_features_incompat; + __be32 sb_features_log_incompat; + + __le32 sb_crc; /* superblock crc */ + __be32 sb_pad; + + __be64 sb_pquotino; /* project quota inode */ + __be64 sb_lsn; /* last write sequence */ + + /* must be padded to 64 bit alignment */ } xfs_dsb_t; /* @@ -223,7 +267,10 @@ typedef enum { XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN, XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG, XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT, - XFS_SBS_FEATURES2, + XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2, XFS_SBS_FEATURES_COMPAT, + XFS_SBS_FEATURES_RO_COMPAT, XFS_SBS_FEATURES_INCOMPAT, + XFS_SBS_FEATURES_LOG_INCOMPAT, XFS_SBS_CRC, XFS_SBS_PAD, + XFS_SBS_PQUOTINO, XFS_SBS_LSN, XFS_SBS_FIELDCOUNT } xfs_sb_field_t; @@ -248,13 +295,23 @@ typedef enum { #define XFS_SB_IFREE XFS_SB_MVAL(IFREE) #define XFS_SB_FDBLOCKS XFS_SB_MVAL(FDBLOCKS) #define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2) +#define XFS_SB_BAD_FEATURES2 XFS_SB_MVAL(BAD_FEATURES2) +#define XFS_SB_FEATURES_COMPAT XFS_SB_MVAL(FEATURES_COMPAT) +#define XFS_SB_FEATURES_RO_COMPAT XFS_SB_MVAL(FEATURES_RO_COMPAT) +#define XFS_SB_FEATURES_INCOMPAT XFS_SB_MVAL(FEATURES_INCOMPAT) +#define XFS_SB_FEATURES_LOG_INCOMPAT XFS_SB_MVAL(FEATURES_LOG_INCOMPAT) +#define XFS_SB_CRC XFS_SB_MVAL(CRC) +#define XFS_SB_PQUOTINO XFS_SB_MVAL(PQUOTINO) #define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT) #define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1) #define XFS_SB_MOD_BITS \ (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \ XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \ XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \ - XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2) + XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \ + XFS_SB_BAD_FEATURES2 | XFS_SB_FEATURES_COMPAT | \ + XFS_SB_FEATURES_RO_COMPAT | XFS_SB_FEATURES_INCOMPAT | \ + XFS_SB_FEATURES_LOG_INCOMPAT | XFS_SB_PQUOTINO) /* @@ -271,248 +328,255 @@ typedef enum { #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS) -#define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp) -#ifdef __KERNEL__ -static inline int xfs_sb_good_version(xfs_sb_t *sbp) +/* + * The first XFS version we support is a v4 superblock with V2 directories. + */ +static inline bool xfs_sb_good_v4_features(struct xfs_sb *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))); + if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT)) + return false; + + /* check for unknown features in the fs */ + if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKBITS) || + ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && + (sbp->sb_features2 & ~XFS_SB_VERSION2_OKBITS))) + return false; + + return true; } -#else -static inline int xfs_sb_good_version(xfs_sb_t *sbp) + +static inline bool xfs_sb_good_version(struct xfs_sb *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 (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) + return true; + if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) + return xfs_sb_good_v4_features(sbp); + return false; } -#endif /* __KERNEL__ */ -#define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v) -static inline unsigned xfs_sb_version_tonew(unsigned v) +/* + * Detect a mismatched features2 field. Older kernels read/wrote + * this into the wrong slot, so to be safe we keep them in sync. + */ +static inline bool xfs_sb_has_mismatched_features2(struct xfs_sb *sbp) { - 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); + return sbp->sb_bad_features2 != sbp->sb_features2; } -#define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v) -static inline unsigned xfs_sb_version_toold(unsigned v) +static inline bool xfs_sb_version_hasattr(struct xfs_sb *sbp) { - 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))); + return (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT); } -#define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp) -static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp) +static inline void xfs_sb_version_addattr(struct xfs_sb *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)); + sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT; } -#define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp) -static inline void xfs_sb_version_addattr(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasquota(struct xfs_sb *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))); + return (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT); } -#define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp) -static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp) +static inline void xfs_sb_version_addquota(struct xfs_sb *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)); + sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT; } -#define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp) -static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasalign(struct xfs_sb *sbp) { - (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \ - XFS_SB_VERSION_3 : \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)); + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 || + (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT)); } -#define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp) -static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasdalign(struct xfs_sb *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT); + return (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); } -#define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp) -static inline void xfs_sb_version_addquota(xfs_sb_t *sbp) +static inline bool xfs_sb_version_haslogv2(struct xfs_sb *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)); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 || + (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT); } -#define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp) -static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasextflgbit(struct xfs_sb *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_5 || + (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT); } -#define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp) -static inline void xfs_sb_version_subalign(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hassector(struct xfs_sb *sbp) { - (sbp)->sb_versionnum = \ - XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT); + return (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT); } -#define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp) -static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasasciici(struct xfs_sb *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); + return (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT); } -#define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp) -static inline int xfs_sb_version_adddalign(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasmorebits(struct xfs_sb *sbp) { - return (sbp)->sb_versionnum = \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 || + (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT); } -#define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp) -static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp) +/* + * sb_features2 bit version macros. + */ +static inline bool xfs_sb_version_haslazysbcount(struct xfs_sb *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_5) || + (xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT)); } -#define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp) -static inline int xfs_sb_version_addshared(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasattr2(struct xfs_sb *sbp) { - return (sbp)->sb_versionnum = \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT); + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) || + (xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT)); } -#define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp) -static inline int xfs_sb_version_subshared(xfs_sb_t *sbp) +static inline void xfs_sb_version_addattr2(struct xfs_sb *sbp) { - return (sbp)->sb_versionnum = \ - ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT); + sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT; + sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT; + sbp->sb_bad_features2 |= XFS_SB_VERSION2_ATTR2BIT; } -#define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp) -static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp) +static inline void xfs_sb_version_removeattr2(struct xfs_sb *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT); + sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT; + sbp->sb_bad_features2 &= ~XFS_SB_VERSION2_ATTR2BIT; + if (!sbp->sb_features2) + sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT; } -#define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp) -static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp) +static inline bool xfs_sb_version_hasprojid32bit(struct xfs_sb *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_5) || + (xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT)); } -#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp) -static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp) +static inline void xfs_sb_version_addprojid32bit(struct xfs_sb *sbp) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT); + sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT; + sbp->sb_features2 |= XFS_SB_VERSION2_PROJID32BIT; + sbp->sb_bad_features2 |= XFS_SB_VERSION2_PROJID32BIT; } -#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp) -static inline int xfs_sb_version_addextflgbit(xfs_sb_t *sbp) +/* + * Extended v5 superblock feature masks. These are to be used for new v5 + * superblock features only. + * + * Compat features are new features that old kernels will not notice or affect + * and so can mount read-write without issues. + * + * RO-Compat (read only) are features that old kernels can read but will break + * if they write. Hence only read-only mounts of such filesystems are allowed on + * kernels that don't support the feature bit. + * + * InCompat features are features which old kernels will not understand and so + * must not mount. + * + * Log-InCompat features are for changes to log formats or new transactions that + * can't be replayed on older kernels. The fields are set when the filesystem is + * mounted, and a clean unmount clears the fields. + */ +#define XFS_SB_FEAT_COMPAT_ALL 0 +#define XFS_SB_FEAT_COMPAT_UNKNOWN ~XFS_SB_FEAT_COMPAT_ALL +static inline bool +xfs_sb_has_compat_feature( + struct xfs_sb *sbp, + __uint32_t feature) { - return (sbp)->sb_versionnum = \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT); + return (sbp->sb_features_compat & feature) != 0; } -#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp) -static inline int xfs_sb_version_subextflgbit(xfs_sb_t *sbp) +#define XFS_SB_FEAT_RO_COMPAT_FINOBT (1 << 0) /* free inode btree */ +#define XFS_SB_FEAT_RO_COMPAT_ALL \ + (XFS_SB_FEAT_RO_COMPAT_FINOBT) +#define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL +static inline bool +xfs_sb_has_ro_compat_feature( + struct xfs_sb *sbp, + __uint32_t feature) { - return (sbp)->sb_versionnum = \ - ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT); + return (sbp->sb_features_ro_compat & feature) != 0; } -#define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp) -static inline int xfs_sb_version_hassector(xfs_sb_t *sbp) +#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */ +#define XFS_SB_FEAT_INCOMPAT_ALL \ + (XFS_SB_FEAT_INCOMPAT_FTYPE) + +#define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL +static inline bool +xfs_sb_has_incompat_feature( + struct xfs_sb *sbp, + __uint32_t feature) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT); + return (sbp->sb_features_incompat & feature) != 0; } -#define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp) -static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp) +#define XFS_SB_FEAT_INCOMPAT_LOG_ALL 0 +#define XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_LOG_ALL +static inline bool +xfs_sb_has_incompat_log_feature( + struct xfs_sb *sbp, + __uint32_t feature) { - return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ - ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT); + return (sbp->sb_features_log_incompat & feature) != 0; } /* - * sb_features2 bit version macros. - * - * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro: - * - * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp) - * ((XFS_SB_VERSION_HASMOREBITS(sbp) && - * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT) + * V5 superblock specific feature checks */ +static inline int xfs_sb_version_hascrc(struct xfs_sb *sbp) +{ + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5; +} -static inline int xfs_sb_version_haslazysbcount(xfs_sb_t *sbp) +static inline int xfs_sb_version_has_pquotino(struct xfs_sb *sbp) { - return (XFS_SB_VERSION_HASMOREBITS(sbp) && \ - ((sbp)->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT)); + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5; } -#define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp) -static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp) +static inline int xfs_sb_version_hasftype(struct xfs_sb *sbp) { - return (XFS_SB_VERSION_HASMOREBITS(sbp)) && \ - ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT); + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 && + xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE)) || + (xfs_sb_version_hasmorebits(sbp) && + (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE)); } -#define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp) -static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp) +static inline int xfs_sb_version_hasfinobt(xfs_sb_t *sbp) { - ((sbp)->sb_versionnum = \ - ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \ - ((sbp)->sb_features2 = \ - ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT))); + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) && + (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FINOBT); } /* * end of superblock version macros */ +static inline bool +xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino) +{ + return (ino == sbp->sb_uquotino || + ino == sbp->sb_gquotino || + ino == sbp->sb_pquotino); +} + #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */ #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR) -#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)((bp)->b_addr)) #define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d)) #define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \ - XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d)) + xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d)) #define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \ XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno)) @@ -528,7 +592,6 @@ static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp) #define XFS_BB_TO_FSB(mp,bb) \ (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log) #define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log) -#define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1)) /* * File system block to byte conversions. @@ -539,4 +602,20 @@ static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp) #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog) #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask) +/* + * perag get/put wrappers for ref counting + */ +extern struct xfs_perag *xfs_perag_get(struct xfs_mount *, xfs_agnumber_t); +extern struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *, xfs_agnumber_t, + int tag); +extern void xfs_perag_put(struct xfs_perag *pag); +extern int xfs_initialize_perag_data(struct xfs_mount *, xfs_agnumber_t); + +extern void xfs_sb_calc_crc(struct xfs_buf *); +extern void xfs_mod_sb(struct xfs_trans *, __int64_t); +extern void xfs_sb_mount_common(struct xfs_mount *, struct xfs_sb *); +extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); +extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); +extern void xfs_sb_quota_from_disk(struct xfs_sb *sbp); + #endif /* __XFS_SB_H__ */ |