diff options
| -rw-r--r-- | fs/xfs/xfs_dir2_block.c | 5 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_sf.c | 138 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_sf.h | 25 | ||||
| -rw-r--r-- | fs/xfs/xfs_inum.h | 11 |
4 files changed, 104 insertions, 75 deletions
diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index 580d99cef9e7..8ab99888ad44 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -1146,7 +1146,7 @@ xfs_dir2_sf_to_block( */ dep = (xfs_dir2_data_entry_t *) ((char *)block + XFS_DIR2_DATA_DOTDOT_OFFSET); - dep->inumber = cpu_to_be64(xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent)); + dep->inumber = cpu_to_be64(xfs_dir2_sf_get_parent_ino(sfp)); dep->namelen = 2; dep->name[0] = dep->name[1] = '.'; tagp = xfs_dir2_data_entry_tag_p(dep); @@ -1195,8 +1195,7 @@ xfs_dir2_sf_to_block( * Copy a real entry. */ dep = (xfs_dir2_data_entry_t *)((char *)block + newoffset); - dep->inumber = cpu_to_be64(xfs_dir2_sf_get_inumber(sfp, - xfs_dir2_sf_inumberp(sfep))); + dep->inumber = cpu_to_be64(xfs_dir2_sfe_get_ino(sfp, sfep)); dep->namelen = sfep->namelen; memcpy(dep->name, sfep->name, dep->namelen); tagp = xfs_dir2_data_entry_tag_p(dep); diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c index b1bae6b1eed9..4c3ecf2c7397 100644 --- a/fs/xfs/xfs_dir2_sf.c +++ b/fs/xfs/xfs_dir2_sf.c @@ -59,6 +59,79 @@ static void xfs_dir2_sf_toino4(xfs_da_args_t *args); static void xfs_dir2_sf_toino8(xfs_da_args_t *args); #endif /* XFS_BIG_INUMS */ + +/* + * Inode numbers in short-form directories can come in two versions, + * either 4 bytes or 8 bytes wide. These helpers deal with the + * two forms transparently by looking at the headers i8count field. + */ +static xfs_ino_t +xfs_dir2_sf_get_ino( + struct xfs_dir2_sf *sfp, + xfs_dir2_inou_t *from) +{ + if (sfp->hdr.i8count) + return XFS_GET_DIR_INO8(from->i8); + else + return XFS_GET_DIR_INO4(from->i4); +} + +static void +xfs_dir2_sf_put_ino( + struct xfs_dir2_sf *sfp, + xfs_dir2_inou_t *to, + xfs_ino_t ino) +{ + if (sfp->hdr.i8count) + XFS_PUT_DIR_INO8(ino, to->i8); + else + XFS_PUT_DIR_INO4(ino, to->i4); +} + +xfs_ino_t +xfs_dir2_sf_get_parent_ino( + struct xfs_dir2_sf *sfp) +{ + return xfs_dir2_sf_get_ino(sfp, &sfp->hdr.parent); +} + +static void +xfs_dir2_sf_put_parent_ino( + struct xfs_dir2_sf *sfp, + xfs_ino_t ino) +{ + xfs_dir2_sf_put_ino(sfp, &sfp->hdr.parent, ino); +} + +/* + * In short-form directory entries the inode numbers are stored at variable + * offset behind the entry name. The inode numbers may only be accessed + * through the helpers below. + */ +static xfs_dir2_inou_t * +xfs_dir2_sfe_inop( + struct xfs_dir2_sf_entry *sfep) +{ + return (xfs_dir2_inou_t *)&sfep->name[sfep->namelen]; +} + +xfs_ino_t +xfs_dir2_sfe_get_ino( + struct xfs_dir2_sf *sfp, + struct xfs_dir2_sf_entry *sfep) +{ + return xfs_dir2_sf_get_ino(sfp, xfs_dir2_sfe_inop(sfep)); +} + +static void +xfs_dir2_sfe_put_ino( + struct xfs_dir2_sf *sfp, + struct xfs_dir2_sf_entry *sfep, + xfs_ino_t ino) +{ + xfs_dir2_sf_put_ino(sfp, xfs_dir2_sfe_inop(sfep), ino); +} + /* * Given a block directory (dp/block), calculate its size as a shortform (sf) * directory and a header for the sf directory, if it will fit it the @@ -138,7 +211,7 @@ xfs_dir2_block_sfsize( */ sfhp->count = count; sfhp->i8count = i8count; - xfs_dir2_sf_put_inumber((xfs_dir2_sf_t *)sfhp, &parent, &sfhp->parent); + xfs_dir2_sf_put_parent_ino((xfs_dir2_sf_t *)sfhp, parent); return size; } @@ -165,7 +238,6 @@ xfs_dir2_block_to_sf( char *ptr; /* current data pointer */ xfs_dir2_sf_entry_t *sfep; /* shortform entry */ xfs_dir2_sf_t *sfp; /* shortform structure */ - xfs_ino_t temp; trace_xfs_dir2_block_to_sf(args); @@ -233,7 +305,7 @@ xfs_dir2_block_to_sf( else if (dep->namelen == 2 && dep->name[0] == '.' && dep->name[1] == '.') ASSERT(be64_to_cpu(dep->inumber) == - xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent)); + xfs_dir2_sf_get_parent_ino(sfp)); /* * Normal entry, copy it into shortform. */ @@ -243,9 +315,9 @@ xfs_dir2_block_to_sf( (xfs_dir2_data_aoff_t) ((char *)dep - (char *)block)); memcpy(sfep->name, dep->name, dep->namelen); - temp = be64_to_cpu(dep->inumber); - xfs_dir2_sf_put_inumber(sfp, &temp, - xfs_dir2_sf_inumberp(sfep)); + xfs_dir2_sfe_put_ino(sfp, sfep, + be64_to_cpu(dep->inumber)); + sfep = xfs_dir2_sf_nextentry(sfp, sfep); } ptr += xfs_dir2_data_entsize(dep->namelen); @@ -406,8 +478,7 @@ xfs_dir2_sf_addname_easy( sfep->namelen = args->namelen; xfs_dir2_sf_put_offset(sfep, offset); memcpy(sfep->name, args->name, sfep->namelen); - xfs_dir2_sf_put_inumber(sfp, &args->inumber, - xfs_dir2_sf_inumberp(sfep)); + xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber); /* * Update the header and inode. */ @@ -498,8 +569,7 @@ xfs_dir2_sf_addname_hard( sfep->namelen = args->namelen; xfs_dir2_sf_put_offset(sfep, offset); memcpy(sfep->name, args->name, sfep->namelen); - xfs_dir2_sf_put_inumber(sfp, &args->inumber, - xfs_dir2_sf_inumberp(sfep)); + xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber); sfp->hdr.count++; #if XFS_BIG_INUMS if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange) @@ -618,14 +688,14 @@ xfs_dir2_sf_check( sfp = (xfs_dir2_sf_t *)dp->i_df.if_u1.if_data; offset = XFS_DIR2_DATA_FIRST_OFFSET; - ino = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent); + ino = xfs_dir2_sf_get_parent_ino(sfp); i8count = ino > XFS_DIR2_MAX_SHORT_INUM; for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->hdr.count; i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) { ASSERT(xfs_dir2_sf_get_offset(sfep) >= offset); - ino = xfs_dir2_sf_get_inumber(sfp, xfs_dir2_sf_inumberp(sfep)); + ino = xfs_dir2_sfe_get_ino(sfp, sfep); i8count += ino > XFS_DIR2_MAX_SHORT_INUM; offset = xfs_dir2_sf_get_offset(sfep) + @@ -686,7 +756,7 @@ xfs_dir2_sf_create( /* * Now can put in the inode number, since i8count is set. */ - xfs_dir2_sf_put_inumber(sfp, &pino, &sfp->hdr.parent); + xfs_dir2_sf_put_parent_ino(sfp, pino); sfp->hdr.count = 0; dp->i_d.di_size = size; xfs_dir2_sf_check(args); @@ -759,7 +829,7 @@ xfs_dir2_sf_getdents( * Put .. entry unless we're starting past it. */ if (*offset <= dotdot_offset) { - ino = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent); + ino = xfs_dir2_sf_get_parent_ino(sfp); if (filldir(dirent, "..", 2, dotdot_offset & 0x7fffffff, ino, DT_DIR)) { *offset = dotdot_offset & 0x7fffffff; return 0; @@ -779,7 +849,7 @@ xfs_dir2_sf_getdents( continue; } - ino = xfs_dir2_sf_get_inumber(sfp, xfs_dir2_sf_inumberp(sfep)); + ino = xfs_dir2_sfe_get_ino(sfp, sfep); if (filldir(dirent, (char *)sfep->name, sfep->namelen, off & 0x7fffffff, ino, DT_UNKNOWN)) { *offset = off & 0x7fffffff; @@ -839,7 +909,7 @@ xfs_dir2_sf_lookup( */ if (args->namelen == 2 && args->name[0] == '.' && args->name[1] == '.') { - args->inumber = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent); + args->inumber = xfs_dir2_sf_get_parent_ino(sfp); args->cmpresult = XFS_CMP_EXACT; return XFS_ERROR(EEXIST); } @@ -858,8 +928,7 @@ xfs_dir2_sf_lookup( sfep->namelen); if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) { args->cmpresult = cmp; - args->inumber = xfs_dir2_sf_get_inumber(sfp, - xfs_dir2_sf_inumberp(sfep)); + args->inumber = xfs_dir2_sfe_get_ino(sfp, sfep); if (cmp == XFS_CMP_EXACT) return XFS_ERROR(EEXIST); ci_sfep = sfep; @@ -918,9 +987,8 @@ xfs_dir2_sf_removename( i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) { if (xfs_da_compname(args, sfep->name, sfep->namelen) == XFS_CMP_EXACT) { - ASSERT(xfs_dir2_sf_get_inumber(sfp, - xfs_dir2_sf_inumberp(sfep)) == - args->inumber); + ASSERT(xfs_dir2_sfe_get_ino(sfp, sfep) == + args->inumber); break; } } @@ -1040,10 +1108,10 @@ xfs_dir2_sf_replace( if (args->namelen == 2 && args->name[0] == '.' && args->name[1] == '.') { #if XFS_BIG_INUMS || defined(DEBUG) - ino = xfs_dir2_sf_get_inumber(sfp, &sfp->hdr.parent); + ino = xfs_dir2_sf_get_parent_ino(sfp); ASSERT(args->inumber != ino); #endif - xfs_dir2_sf_put_inumber(sfp, &args->inumber, &sfp->hdr.parent); + xfs_dir2_sf_put_parent_ino(sfp, args->inumber); } /* * Normal entry, look for the name. @@ -1055,12 +1123,10 @@ xfs_dir2_sf_replace( if (xfs_da_compname(args, sfep->name, sfep->namelen) == XFS_CMP_EXACT) { #if XFS_BIG_INUMS || defined(DEBUG) - ino = xfs_dir2_sf_get_inumber(sfp, - xfs_dir2_sf_inumberp(sfep)); + ino = xfs_dir2_sfe_get_ino(sfp, sfep); ASSERT(args->inumber != ino); #endif - xfs_dir2_sf_put_inumber(sfp, &args->inumber, - xfs_dir2_sf_inumberp(sfep)); + xfs_dir2_sfe_put_ino(sfp, sfep, args->inumber); break; } } @@ -1121,7 +1187,6 @@ xfs_dir2_sf_toino4( char *buf; /* old dir's buffer */ xfs_inode_t *dp; /* incore directory inode */ int i; /* entry index */ - xfs_ino_t ino; /* entry inode number */ int newsize; /* new inode size */ xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */ xfs_dir2_sf_t *oldsfp; /* old sf directory */ @@ -1162,8 +1227,7 @@ xfs_dir2_sf_toino4( */ sfp->hdr.count = oldsfp->hdr.count; sfp->hdr.i8count = 0; - ino = xfs_dir2_sf_get_inumber(oldsfp, &oldsfp->hdr.parent); - xfs_dir2_sf_put_inumber(sfp, &ino, &sfp->hdr.parent); + xfs_dir2_sf_put_parent_ino(sfp, xfs_dir2_sf_get_parent_ino(oldsfp)); /* * Copy the entries field by field. */ @@ -1175,9 +1239,8 @@ xfs_dir2_sf_toino4( sfep->namelen = oldsfep->namelen; sfep->offset = oldsfep->offset; memcpy(sfep->name, oldsfep->name, sfep->namelen); - ino = xfs_dir2_sf_get_inumber(oldsfp, - xfs_dir2_sf_inumberp(oldsfep)); - xfs_dir2_sf_put_inumber(sfp, &ino, xfs_dir2_sf_inumberp(sfep)); + xfs_dir2_sfe_put_ino(sfp, sfep, + xfs_dir2_sfe_get_ino(oldsfp, oldsfep)); } /* * Clean up the inode. @@ -1199,7 +1262,6 @@ xfs_dir2_sf_toino8( char *buf; /* old dir's buffer */ xfs_inode_t *dp; /* incore directory inode */ int i; /* entry index */ - xfs_ino_t ino; /* entry inode number */ int newsize; /* new inode size */ xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */ xfs_dir2_sf_t *oldsfp; /* old sf directory */ @@ -1240,8 +1302,7 @@ xfs_dir2_sf_toino8( */ sfp->hdr.count = oldsfp->hdr.count; sfp->hdr.i8count = 1; - ino = xfs_dir2_sf_get_inumber(oldsfp, &oldsfp->hdr.parent); - xfs_dir2_sf_put_inumber(sfp, &ino, &sfp->hdr.parent); + xfs_dir2_sf_put_parent_ino(sfp, xfs_dir2_sf_get_parent_ino(oldsfp)); /* * Copy the entries field by field. */ @@ -1253,9 +1314,8 @@ xfs_dir2_sf_toino8( sfep->namelen = oldsfep->namelen; sfep->offset = oldsfep->offset; memcpy(sfep->name, oldsfep->name, sfep->namelen); - ino = xfs_dir2_sf_get_inumber(oldsfp, - xfs_dir2_sf_inumberp(oldsfep)); - xfs_dir2_sf_put_inumber(sfp, &ino, xfs_dir2_sf_inumberp(sfep)); + xfs_dir2_sfe_put_ino(sfp, sfep, + xfs_dir2_sfe_get_ino(oldsfp, oldsfep)); } /* * Clean up the inode. diff --git a/fs/xfs/xfs_dir2_sf.h b/fs/xfs/xfs_dir2_sf.h index 6ac44b550d39..208d2c3c1122 100644 --- a/fs/xfs/xfs_dir2_sf.h +++ b/fs/xfs/xfs_dir2_sf.h @@ -90,28 +90,6 @@ static inline int xfs_dir2_sf_hdr_size(int i8count) ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t))); } -static inline xfs_dir2_inou_t *xfs_dir2_sf_inumberp(xfs_dir2_sf_entry_t *sfep) -{ - return (xfs_dir2_inou_t *)&(sfep)->name[(sfep)->namelen]; -} - -static inline xfs_intino_t -xfs_dir2_sf_get_inumber(xfs_dir2_sf_t *sfp, xfs_dir2_inou_t *from) -{ - return ((sfp)->hdr.i8count == 0 ? \ - (xfs_intino_t)XFS_GET_DIR_INO4((from)->i4) : \ - (xfs_intino_t)XFS_GET_DIR_INO8((from)->i8)); -} - -static inline void xfs_dir2_sf_put_inumber(xfs_dir2_sf_t *sfp, xfs_ino_t *from, - xfs_dir2_inou_t *to) -{ - if ((sfp)->hdr.i8count == 0) - XFS_PUT_DIR_INO4(*(from), (to)->i4); - else - XFS_PUT_DIR_INO8(*(from), (to)->i8); -} - static inline xfs_dir2_data_aoff_t xfs_dir2_sf_get_offset(xfs_dir2_sf_entry_t *sfep) { @@ -155,6 +133,9 @@ xfs_dir2_sf_nextentry(xfs_dir2_sf_t *sfp, xfs_dir2_sf_entry_t *sfep) /* * Functions. */ +extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf *sfp); +extern xfs_ino_t xfs_dir2_sfe_get_ino(struct xfs_dir2_sf *sfp, + struct xfs_dir2_sf_entry *sfep); extern int xfs_dir2_block_sfsize(struct xfs_inode *dp, struct xfs_dir2_block *block, xfs_dir2_sf_hdr_t *sfhp); diff --git a/fs/xfs/xfs_inum.h b/fs/xfs/xfs_inum.h index b8e4ee4e89a4..b253c0ea5bec 100644 --- a/fs/xfs/xfs_inum.h +++ b/fs/xfs/xfs_inum.h @@ -28,17 +28,6 @@ typedef __uint32_t xfs_agino_t; /* within allocation grp inode number */ -/* - * Useful inode bits for this kernel. - * Used in some places where having 64-bits in the 32-bit kernels - * costs too much. - */ -#if XFS_BIG_INUMS -typedef xfs_ino_t xfs_intino_t; -#else -typedef __uint32_t xfs_intino_t; -#endif - #define NULLFSINO ((xfs_ino_t)-1) #define NULLAGINO ((xfs_agino_t)-1) |