diff options
| -rw-r--r-- | fs/xfs/Makefile | 1 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.c | 1876 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.h | 134 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode_fork.c | 1921 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode_fork.h | 171 |
5 files changed, 2096 insertions, 2007 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index dc72b6ba109..ce0b87e6e4f 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -74,6 +74,7 @@ xfs-y += xfs_alloc.o \ xfs_ialloc_btree.o \ xfs_icreate_item.o \ xfs_inode.o \ + xfs_inode_fork.o \ xfs_log_recover.o \ xfs_mount.o \ xfs_symlink.o \ diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 516a70a5a45..18308aceebc 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -48,7 +48,6 @@ #include "xfs_trace.h" #include "xfs_icache.h" -kmem_zone_t *xfs_ifork_zone; kmem_zone_t *xfs_inode_zone; /* @@ -58,9 +57,6 @@ kmem_zone_t *xfs_inode_zone; #define XFS_ITRUNC_MAX_EXTENTS 2 STATIC int xfs_iflush_int(xfs_inode_t *, xfs_buf_t *); -STATIC int xfs_iformat_local(xfs_inode_t *, xfs_dinode_t *, int, int); -STATIC int xfs_iformat_extents(xfs_inode_t *, xfs_dinode_t *, int); -STATIC int xfs_iformat_btree(xfs_inode_t *, xfs_dinode_t *, int); /* * helper function to extract extent size hint from inode @@ -326,34 +322,6 @@ __xfs_iflock( finish_wait(wq, &wait.wait); } -#ifdef DEBUG -/* - * Make sure that the extents in the given memory buffer - * are valid. - */ -STATIC void -xfs_validate_extents( - xfs_ifork_t *ifp, - int nrecs, - xfs_exntfmt_t fmt) -{ - xfs_bmbt_irec_t irec; - xfs_bmbt_rec_host_t rec; - int i; - - for (i = 0; i < nrecs; i++) { - xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); - rec.l0 = get_unaligned(&ep->l0); - rec.l1 = get_unaligned(&ep->l1); - xfs_bmbt_get_all(&rec, &irec); - if (fmt == XFS_EXTFMT_NOSTATE) - ASSERT(irec.br_state == XFS_EXT_NORM); - } -} -#else /* DEBUG */ -#define xfs_validate_extents(ifp, nrecs, fmt) -#endif /* DEBUG */ - /* * Check that none of the inode's in the buffer have a next * unlinked field of 0. @@ -488,351 +456,6 @@ xfs_imap_to_bp( return 0; } -/* - * Move inode type and inode format specific information from the - * on-disk inode to the in-core inode. For fifos, devs, and sockets - * this means set if_rdev to the proper value. For files, directories, - * and symlinks this means to bring in the in-line data or extent - * pointers. For a file in B-tree format, only the root is immediately - * brought in-core. The rest will be in-lined in if_extents when it - * is first referenced (see xfs_iread_extents()). - */ -STATIC int -xfs_iformat( - xfs_inode_t *ip, - xfs_dinode_t *dip) -{ - xfs_attr_shortform_t *atp; - int size; - int error = 0; - xfs_fsize_t di_size; - - if (unlikely(be32_to_cpu(dip->di_nextents) + - be16_to_cpu(dip->di_anextents) > - be64_to_cpu(dip->di_nblocks))) { - xfs_warn(ip->i_mount, - "corrupt dinode %Lu, extent total = %d, nblocks = %Lu.", - (unsigned long long)ip->i_ino, - (int)(be32_to_cpu(dip->di_nextents) + - be16_to_cpu(dip->di_anextents)), - (unsigned long long) - be64_to_cpu(dip->di_nblocks)); - XFS_CORRUPTION_ERROR("xfs_iformat(1)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - if (unlikely(dip->di_forkoff > ip->i_mount->m_sb.sb_inodesize)) { - xfs_warn(ip->i_mount, "corrupt dinode %Lu, forkoff = 0x%x.", - (unsigned long long)ip->i_ino, - dip->di_forkoff); - XFS_CORRUPTION_ERROR("xfs_iformat(2)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - if (unlikely((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) && - !ip->i_mount->m_rtdev_targp)) { - xfs_warn(ip->i_mount, - "corrupt dinode %Lu, has realtime flag set.", - ip->i_ino); - XFS_CORRUPTION_ERROR("xfs_iformat(realtime)", - XFS_ERRLEVEL_LOW, ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - switch (ip->i_d.di_mode & S_IFMT) { - case S_IFIFO: - case S_IFCHR: - case S_IFBLK: - case S_IFSOCK: - if (unlikely(dip->di_format != XFS_DINODE_FMT_DEV)) { - XFS_CORRUPTION_ERROR("xfs_iformat(3)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - ip->i_d.di_size = 0; - ip->i_df.if_u2.if_rdev = xfs_dinode_get_rdev(dip); - break; - - case S_IFREG: - case S_IFLNK: - case S_IFDIR: - switch (dip->di_format) { - case XFS_DINODE_FMT_LOCAL: - /* - * no local regular files yet - */ - if (unlikely(S_ISREG(be16_to_cpu(dip->di_mode)))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (local format for regular file).", - (unsigned long long) ip->i_ino); - XFS_CORRUPTION_ERROR("xfs_iformat(4)", - XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - di_size = be64_to_cpu(dip->di_size); - if (unlikely(di_size > XFS_DFORK_DSIZE(dip, ip->i_mount))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (bad size %Ld for local inode).", - (unsigned long long) ip->i_ino, - (long long) di_size); - XFS_CORRUPTION_ERROR("xfs_iformat(5)", - XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - size = (int)di_size; - error = xfs_iformat_local(ip, dip, XFS_DATA_FORK, size); - break; - case XFS_DINODE_FMT_EXTENTS: - error = xfs_iformat_extents(ip, dip, XFS_DATA_FORK); - break; - case XFS_DINODE_FMT_BTREE: - error = xfs_iformat_btree(ip, dip, XFS_DATA_FORK); - break; - default: - XFS_ERROR_REPORT("xfs_iformat(6)", XFS_ERRLEVEL_LOW, - ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - break; - - default: - XFS_ERROR_REPORT("xfs_iformat(7)", XFS_ERRLEVEL_LOW, ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - if (error) { - return error; - } - if (!XFS_DFORK_Q(dip)) - return 0; - - ASSERT(ip->i_afp == NULL); - ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP | KM_NOFS); - - switch (dip->di_aformat) { - case XFS_DINODE_FMT_LOCAL: - atp = (xfs_attr_shortform_t *)XFS_DFORK_APTR(dip); - size = be16_to_cpu(atp->hdr.totsize); - - if (unlikely(size < sizeof(struct xfs_attr_sf_hdr))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (bad attr fork size %Ld).", - (unsigned long long) ip->i_ino, - (long long) size); - XFS_CORRUPTION_ERROR("xfs_iformat(8)", - XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - error = xfs_iformat_local(ip, dip, XFS_ATTR_FORK, size); - break; - case XFS_DINODE_FMT_EXTENTS: - error = xfs_iformat_extents(ip, dip, XFS_ATTR_FORK); - break; - case XFS_DINODE_FMT_BTREE: - error = xfs_iformat_btree(ip, dip, XFS_ATTR_FORK); - break; - default: - error = XFS_ERROR(EFSCORRUPTED); - break; - } - if (error) { - kmem_zone_free(xfs_ifork_zone, ip->i_afp); - ip->i_afp = NULL; - xfs_idestroy_fork(ip, XFS_DATA_FORK); - } - return error; -} - -/* - * The file is in-lined in the on-disk inode. - * If it fits into if_inline_data, then copy - * it there, otherwise allocate a buffer for it - * and copy the data there. Either way, set - * if_data to point at the data. - * If we allocate a buffer for the data, make - * sure that its size is a multiple of 4 and - * record the real size in i_real_bytes. - */ -STATIC int -xfs_iformat_local( - xfs_inode_t *ip, - xfs_dinode_t *dip, - int whichfork, - int size) -{ - xfs_ifork_t *ifp; - int real_size; - - /* - * If the size is unreasonable, then something - * is wrong and we just bail out rather than crash in - * kmem_alloc() or memcpy() below. - */ - if (unlikely(size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { - xfs_warn(ip->i_mount, - "corrupt inode %Lu (bad size %d for local fork, size = %d).", - (unsigned long long) ip->i_ino, size, - XFS_DFORK_SIZE(dip, ip->i_mount, whichfork)); - XFS_CORRUPTION_ERROR("xfs_iformat_local", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - ifp = XFS_IFORK_PTR(ip, whichfork); - real_size = 0; - if (size == 0) - ifp->if_u1.if_data = NULL; - else if (size <= sizeof(ifp->if_u2.if_inline_data)) - ifp->if_u1.if_data = ifp->if_u2.if_inline_data; - else { - real_size = roundup(size, 4); - ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP | KM_NOFS); - } - ifp->if_bytes = size; - ifp->if_real_bytes = real_size; - if (size) - memcpy(ifp->if_u1.if_data, XFS_DFORK_PTR(dip, whichfork), size); - ifp->if_flags &= ~XFS_IFEXTENTS; - ifp->if_flags |= XFS_IFINLINE; - return 0; -} - -/* - * The file consists of a set of extents all - * of which fit into the on-disk inode. - * If there are few enough extents to fit into - * the if_inline_ext, then copy them there. - * Otherwise allocate a buffer for them and copy - * them into it. Either way, set if_extents - * to point at the extents. - */ -STATIC int -xfs_iformat_extents( - xfs_inode_t *ip, - xfs_dinode_t *dip, - int whichfork) -{ - xfs_bmbt_rec_t *dp; - xfs_ifork_t *ifp; - int nex; - int size; - int i; - - ifp = XFS_IFORK_PTR(ip, whichfork); - nex = XFS_DFORK_NEXTENTS(dip, whichfork); - size = nex * (uint)sizeof(xfs_bmbt_rec_t); - - /* - * If the number of extents is unreasonable, then something - * is wrong and we just bail out rather than crash in - * kmem_alloc() or memcpy() below. - */ - if (unlikely(size < 0 || size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { - xfs_warn(ip->i_mount, "corrupt inode %Lu ((a)extents = %d).", - (unsigned long long) ip->i_ino, nex); - XFS_CORRUPTION_ERROR("xfs_iformat_extents(1)", XFS_ERRLEVEL_LOW, - ip->i_mount, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - ifp->if_real_bytes = 0; - if (nex == 0) - ifp->if_u1.if_extents = NULL; - else if (nex <= XFS_INLINE_EXTS) - ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; - else - xfs_iext_add(ifp, 0, nex); - - ifp->if_bytes = size; - if (size) { - dp = (xfs_bmbt_rec_t *) XFS_DFORK_PTR(dip, whichfork); - xfs_validate_extents(ifp, nex, XFS_EXTFMT_INODE(ip)); - for (i = 0; i < nex; i++, dp++) { - xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); - ep->l0 = get_unaligned_be64(&dp->l0); - ep->l1 = get_unaligned_be64(&dp->l1); - } - XFS_BMAP_TRACE_EXLIST(ip, nex, whichfork); - if (whichfork != XFS_DATA_FORK || - XFS_EXTFMT_INODE(ip) == XFS_EXTFMT_NOSTATE) - if (unlikely(xfs_check_nostate_extents( - ifp, 0, nex))) { - XFS_ERROR_REPORT("xfs_iformat_extents(2)", - XFS_ERRLEVEL_LOW, - ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - } - ifp->if_flags |= XFS_IFEXTENTS; - return 0; -} - -/* - * The file has too many extents to fit into - * the inode, so they are in B-tree format. - * Allocate a buffer for the root of the B-tree - * and copy the root into it. The i_extents - * field will remain NULL until all of the - * extents are read in (when they are needed). - */ -STATIC int -xfs_iformat_btree( - xfs_inode_t *ip, - xfs_dinode_t *dip, - int whichfork) -{ - struct xfs_mount *mp = ip->i_mount; - xfs_bmdr_block_t *dfp; - xfs_ifork_t *ifp; - /* REFERENCED */ - int nrecs; - int size; - - ifp = XFS_IFORK_PTR(ip, whichfork); - dfp = (xfs_bmdr_block_t *)XFS_DFORK_PTR(dip, whichfork); - size = XFS_BMAP_BROOT_SPACE(mp, dfp); - nrecs = be16_to_cpu(dfp->bb_numrecs); - - /* - * blow out if -- fork has less extents than can fit in - * fork (fork shouldn't be a btree format), root btree - * block has more records than can fit into the fork, - * or the number of extents is greater than the number of - * blocks. - */ - if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <= - XFS_IFORK_MAXEXT(ip, whichfork) || - XFS_BMDR_SPACE_CALC(nrecs) > - XFS_DFORK_SIZE(dip, mp, whichfork) || - XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) { - xfs_warn(mp, "corrupt inode %Lu (btree).", - (unsigned long long) ip->i_ino); - XFS_CORRUPTION_ERROR("xfs_iformat_btree", XFS_ERRLEVEL_LOW, - mp, dip); - return XFS_ERROR(EFSCORRUPTED); - } - - ifp->if_broot_bytes = size; - ifp->if_broot = kmem_alloc(size, KM_SLEEP | KM_NOFS); - ASSERT(ifp->if_broot != NULL); - /* - * Copy and convert from the on-disk structure - * to the in-memory structure. - */ - xfs_bmdr_to_bmbt(ip, dfp, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork), - ifp->if_broot, size); - ifp->if_flags &= ~XFS_IFEXTENTS; - ifp->if_flags |= XFS_IFBROOT; - - return 0; -} - STATIC void xfs_dinode_from_disk( xfs_icdinode_t *to, @@ -1095,13 +718,13 @@ xfs_iread( /* * If the on-disk inode is already linked to a directory * entry, copy all of the inode into the in-core inode. - * xfs_iformat() handles copying in the inode format + * xfs_iformat_fork() handles copying in the inode format * specific information. * Otherwise, just get the truly permanent information. */ if (dip->di_mode) { xfs_dinode_from_disk(&ip->i_d, dip); - error = xfs_iformat(ip, dip); + error = xfs_iformat_fork(ip, dip); if (error) { #ifdef DEBUG xfs_alert(mp, "%s: xfs_iformat() returned error %d", @@ -1178,44 +801,6 @@ xfs_iread( } /* - * Read in extents from a btree-format inode. - * Allocate and fill in if_extents. Real work is done in xfs_bmap.c. - */ -int -xfs_iread_extents( - xfs_trans_t *tp, - xfs_inode_t *ip, - int whichfork) -{ - int error; - xfs_ifork_t *ifp; - xfs_extnum_t nextents; - - if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { - XFS_ERROR_REPORT("xfs_iread_extents", XFS_ERRLEVEL_LOW, - ip->i_mount); - return XFS_ERROR(EFSCORRUPTED); - } - nextents = XFS_IFORK_NEXTENTS(ip, whichfork); - ifp = XFS_IFORK_PTR(ip, whichfork); - - /* - * We know that the size is valid (it's checked in iformat_btree) - */ - ifp->if_bytes = ifp->if_real_bytes = 0; - ifp->if_flags |= XFS_IFEXTENTS; - xfs_iext_add(ifp, 0, nextents); - error = xfs_bmap_read_extents(tp, ip, whichfork); - if (error) { - xfs_iext_destroy(ifp); - ifp->if_flags &= ~XFS_IFEXTENTS; - return error; - } - xfs_validate_extents(ifp, nextents, XFS_EXTFMT_INODE(ip)); - return 0; -} - -/* * Allocate an inode on disk and return a copy of its in-core version. * The in-core inode is locked exclusively. Set mode, nlink, and rdev * appropriately within the inode. The uid and gid for the inode are @@ -2094,272 +1679,6 @@ xfs_ifree( } /* - * Reallocate the space for if_broot based on the number of records - * being added or deleted as indicated in rec_diff. Move the records - * and pointers in if_broot to fit the new size. When shrinking this - * will eliminate holes between the records and pointers created by - * the caller. When growing this will create holes to be filled in - * by the caller. - * - * The caller must not request to add more records than would fit in - * the on-disk inode root. If the if_broot is currently NULL, then - * if we adding records one will be allocated. The caller must also - * not request that the number of records go below zero, although - * it can go to zero. - * - * ip -- the inode whose if_broot area is changing - * ext_diff -- the change in the number of records, positive or negative, - * requested for the if_broot array. - */ -void -xfs_iroot_realloc( - xfs_inode_t *ip, - int rec_diff, - int whichfork) -{ - struct xfs_mount *mp = ip->i_mount; - int cur_max; - xfs_ifork_t *ifp; - struct xfs_btree_block *new_broot; - int new_max; - size_t new_size; - char *np; - char *op; - - /* - * Handle the degenerate case quietly. - */ - if (rec_diff == 0) { - return; - } - - ifp = XFS_IFORK_PTR(ip, whichfork); - if (rec_diff > 0) { - /* - * If there wasn't any memory allocated before, just - * allocate it now and get out. - */ - if (ifp->if_broot_bytes == 0) { - new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff); - ifp->if_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS); - ifp->if_broot_bytes = (int)new_size; - return; - } - - /* - * If there is already an existing if_broot, then we need - * to realloc() it and shift the pointers to their new - * location. The records don't change location because - * they are kept butted up against the btree block header. - */ - cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0); - new_max = cur_max + rec_diff; - new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max); - ifp->if_broot = kmem_realloc(ifp->if_broot, new_size, - XFS_BMAP_BROOT_SPACE_CALC(mp, cur_max), - KM_SLEEP | KM_NOFS); - op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, - ifp->if_broot_bytes); - np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, - (int)new_size); - ifp->if_broot_bytes = (int)new_size; - ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= - XFS_IFORK_SIZE(ip, whichfork)); - memmove(np, op, cur_max * (uint)sizeof(xfs_dfsbno_t)); - return; - } - - /* - * rec_diff is less than 0. In this case, we are shrinking the - * if_broot buffer. It must already exist. If we go to zero - * records, just get rid of the root and clear the status bit. - */ - ASSERT((ifp->if_broot != NULL) && (ifp->if_broot_bytes > 0)); - cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0); - new_max = cur_max + rec_diff; - ASSERT(new_max >= 0); - if (new_max > 0) - new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max); - else - new_size = 0; - if (new_size > 0) { - new_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS); - /* - * First copy over the btree block header. - */ - memcpy(new_broot, ifp->if_broot, - XFS_BMBT_BLOCK_LEN(ip->i_mount)); - } else { - new_broot = NULL; - ifp->if_flags &= ~XFS_IFBROOT; - } - - /* - * Only copy the records and pointers if there are any. - */ - if (new_max > 0) { - /* - * First copy the records. - */ - op = (char *)XFS_BMBT_REC_ADDR(mp, ifp->if_broot, 1); - np = (char *)XFS_BMBT_REC_ADDR(mp, new_broot, 1); - memcpy(np, op, new_max * (uint)sizeof(xfs_bmbt_rec_t)); - - /* - * Then copy the pointers. - */ - op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1, - ifp->if_broot_bytes); - np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, new_broot, 1, - (int)new_size); - memcpy(np, op, new_max * (uint)sizeof(xfs_dfsbno_t)); - } - kmem_free(ifp->if_broot); - ifp->if_broot = new_broot; - ifp->if_broot_bytes = (int)new_size; - if (ifp->if_broot) - ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= - XFS_IFORK_SIZE(ip, whichfork)); - return; -} - - -/* - * This is called when the amount of space needed for if_data - * is increased or decreased. The change in size is indicated by - * the number of bytes that need to be added or deleted in the - * byte_diff parameter. - * - * If the amount of space needed has decreased below the size of the - * inline buffer, then switch to using the inline buffer. Otherwise, - * use kmem_realloc() or kmem_alloc() to adjust the size of the buffer - * to what is needed. - * - * ip -- the inode whose if_data area is changing - * byte_diff -- the change in the number of bytes, positive or negative, - * requested for the if_data array. - */ -void -xfs_idata_realloc( - xfs_inode_t *ip, - int byte_diff, - int whichfork) -{ - xfs_ifork_t *ifp; - int new_size; - int real_size; - - if (byte_diff == 0) { - return; - } - - ifp = XFS_IFORK_PTR(ip, whichfork); - new_size = (int)ifp->if_bytes + byte_diff; - ASSERT(new_size >= 0); - - if (new_size == 0) { - if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { - kmem_free(ifp->if_u1.if_data); - } - ifp->if_u1.if_data = NULL; - real_size = 0; - } else if (new_size <= sizeof(ifp->if_u2.if_inline_data)) { - /* - * If the valid extents/data can fit in if_inline_ext/data, - * copy them from the malloc'd vector and free it. - */ - if (ifp->if_u1.if_data == NULL) { - ifp->if_u1.if_data = ifp->if_u2.if_inline_data; - } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { - ASSERT(ifp->if_real_bytes != 0); - memcpy(ifp->if_u2.if_inline_data, ifp->if_u1.if_data, - new_size); - kmem_free(ifp->if_u1.if_data); - ifp->if_u1.if_data = ifp->if_u2.if_inline_data; - } - real_size = 0; - } else { - /* - * Stuck with malloc/realloc. - * For inline data, the underlying buffer must be - * a multiple of 4 bytes in size so that it can be - * logged and stay on word boundaries. We enforce - * that here. - */ - real_size = roundup(new_size, 4); - if (ifp->if_u1.if_data == NULL) { - ASSERT(ifp->if_real_bytes == 0); - ifp->if_u1.if_data = kmem_alloc(real_size, - KM_SLEEP | KM_NOFS); - } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) { - /* - * Only do the realloc if the underlying size - * is really changing. - */ - if (ifp->if_real_bytes != real_size) { - ifp->if_u1.if_data = - kmem_realloc(ifp->if_u1.if_data, - real_size, - ifp->if_real_bytes, - KM_SLEEP | KM_NOFS); - } - } else { - ASSERT(ifp->if_real_bytes == 0); - ifp->if_u1.if_data = kmem_alloc(real_size, - KM_SLEEP | KM_NOFS); - memcpy(ifp->if_u1.if_data, ifp->if_u2.if_inline_data, - ifp->if_bytes); - } - } - ifp->if_real_bytes = real_size; - ifp->if_bytes = new_size; - ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork)); -} - -void -xfs_idestroy_fork( - xfs_inode_t *ip, - int whichfork) -{ - xfs_ifork_t *ifp; - - ifp = XFS_IFORK_PTR(ip, whichfork); - if (ifp->if_broot != NULL) { - kmem_free(ifp->if_broot); - ifp->if_broot = NULL; - } - - /* - * If the format is local, then we can't have an extents - * array so just look for an inline data array. If we're - * not local then we may or may not have an extents list, - * so check and free it up if we do. - */ - if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { - if ((ifp->if_u1.if_data != ifp->if_u2.if_inline_data) && - (ifp->if_u1.if_data != NULL)) { - ASSERT(ifp->if_real_bytes != 0); - kmem_free(ifp->if_u1.if_data); - ifp->if_u1.if_data = NULL; - ifp->if_real_bytes = 0; - } - } else if ((ifp->if_flags & XFS_IFEXTENTS) && - ((ifp->if_flags & XFS_IFEXTIREC) || - ((ifp->if_u1.if_extents != NULL) && - (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext)))) { - ASSERT(ifp->if_real_bytes != 0); - xfs_iext_destroy(ifp); - } - ASSERT(ifp->if_u1.if_extents == NULL || - ifp->if_u1.if_extents == ifp->if_u2.if_inline_ext); - ASSERT(ifp->if_real_bytes == 0); - if (whichfork == XFS_ATTR_FORK) { - kmem_zone_free(xfs_ifork_zone, ip->i_afp); - ip->i_afp = NULL; - } -} - -/* * This is called to unpin an inode. The caller must have the inode locked * in at least shared mode so that the buffer cannot be subsequently pinned * once someone is waiting for it to be unpinned. @@ -2402,164 +1721,6 @@ xfs_iunpin_wait( __xfs_iunpin_wait(ip); } -/* - * xfs_iextents_copy() - * - * This is called to copy the REAL extents (as opposed to the delayed - * allocation extents) from the inode into the given buffer. It - * returns the number of bytes copied into the buffer. - * - * If there are no delayed allocation extents, then we can just - * memcpy() the extents into the buffer. Otherwise, we need to - * examine each extent in turn and skip those which are delayed. - */ -int -xfs_iextents_copy( - xfs_inode_t *ip, - xfs_bmbt_rec_t *dp, - int whichfork) -{ - int copied; - int i; - xfs_ifork_t *ifp; - int nrecs; - xfs_fsblock_t start_block; - - ifp = XFS_IFORK_PTR(ip, whichfork); - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - ASSERT(ifp->if_bytes > 0); - - nrecs = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - XFS_BMAP_TRACE_EXLIST(ip, nrecs, whichfork); - ASSERT(nrecs > 0); - - /* - * There are some delayed allocation extents in the - * inode, so copy the extents one at a time and skip - * the delayed ones. There must be at least one - * non-delayed extent. - */ - copied = 0; - for (i = 0; i < nrecs; i++) { - xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i); - start_block = xfs_bmbt_get_startblock(ep); - if (isnullstartblock(start_block)) { - /* - * It's a delayed allocation extent, so skip it. - */ - continue; - } - - /* Translate to on disk format */ - put_unaligned(cpu_to_be64(ep->l0), &dp->l0); - put_unaligned(cpu_to_be64(ep->l1), &dp->l1); - dp++; - copied++; - } - ASSERT(copied != 0); - xfs_validate_extents(ifp, copied, XFS_EXTFMT_INODE(ip)); - - return (copied * (uint)sizeof(xfs_bmbt_rec_t)); -} - -/* - * Each of the following cases stores data into the same region - * of the on-disk inode, so only one of them can be valid at - * any given time. While it is possible to have conflicting formats - * and log flags, e.g. having XFS_ILOG_?DATA set when the fork is - * in EXTENTS format, this can only happen when the fork has - * changed formats after being modified but before being flushed. - * In these cases, the format always takes precedence, because the - * format indicates the current state of the fork. - */ -/*ARGSUSED*/ -STATIC void -xfs_iflush_fork( - xfs_inode_t *ip, - xfs_dinode_t *dip, - xfs_inode_log_item_t *iip, - int whichfork, - xfs_buf_t *bp) -{ - char *cp; - xfs_ifork_t *ifp; - xfs_mount_t *mp; - static const short brootflag[2] = - { XFS_ILOG_DBROOT, XFS_ILOG_ABROOT }; - static const short dataflag[2] = - { XFS_ILOG_DDATA, XFS_ILOG_ADATA }; - static const short extflag[2] = - { XFS_ILOG_DEXT, XFS_ILOG_AEXT }; - - if (!iip) - return; - ifp = XFS_IFORK_PTR(ip, whichfork); - /* - * This can happen if we gave up in iformat in an error path, - * for the attribute fork. - */ - if (!ifp) { - ASSERT(whichfork == XFS_ATTR_FORK); - return; - } - cp = XFS_DFORK_PTR(dip, whichfork); - mp = ip->i_mount; - switch (XFS_IFORK_FORMAT(ip, whichfork)) { - case XFS_DINODE_FMT_LOCAL: - if ((iip->ili_fields & dataflag[whichfork]) && - (ifp->if_bytes > 0)) { - ASSERT(ifp->if_u1.if_data != NULL); - ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork)); - memcpy(cp, ifp->if_u1.if_data, ifp->if_bytes); - } - break; - - case XFS_DINODE_FMT_EXTENTS: - ASSERT((ifp->if_flags & XFS_IFEXTENTS) || - !(iip->ili_fields & extflag[whichfork])); - if ((iip->ili_fields & extflag[whichfork]) && - (ifp->if_bytes > 0)) { - ASSERT(xfs_iext_get_ext(ifp, 0)); - ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0); - (void)xfs_iextents_copy(ip, (xfs_bmbt_rec_t *)cp, - whichfork); - } - break; - - case XFS_DINODE_FMT_BTREE: - if ((iip->ili_fields & brootflag[whichfork]) && - (ifp->if_broot_bytes > 0)) { - ASSERT(ifp->if_broot != NULL); - ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <= - XFS_IFORK_SIZE(ip, whichfork)); - xfs_bmbt_to_bmdr(mp, ifp->if_broot, ifp->if_broot_bytes, - (xfs_bmdr_block_t *)cp, - XFS_DFORK_SIZE(dip, mp, whichfork)); - } - break; - - case XFS_DINODE_FMT_DEV: - if (iip->ili_fields & XFS_ILOG_DEV) { - ASSERT(whichfork == XFS_DATA_FORK); - xfs_dinode_put_rdev(dip, ip->i_df.if_u2.if_rdev); - } - break; - - case XFS_DINODE_FMT_UUID: - if (iip->ili_fields & XFS_ILOG_UUID) { - ASSERT(whichfork == XFS_DATA_FORK); - memcpy(XFS_DFORK_DPTR(dip), - &ip->i_df.if_u2.if_uuid, - sizeof(uuid_t)); - } - break; - - default: - ASSERT(0); - break; - } -} - STATIC int xfs_iflush_cluster( xfs_inode_t *ip, @@ -3006,1038 +2167,6 @@ corrupt_out: } /* - * Return a pointer to the extent record at file index idx. - */ -xfs_bmbt_rec_host_t * -xfs_iext_get_ext( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t idx) /* index of target extent */ -{ - ASSERT(idx >= 0); - ASSERT(idx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t)); - - if ((ifp->if_flags & XFS_IFEXTIREC) && (idx == 0)) { - return ifp->if_u1.if_ext_irec->er_extbuf; - } else if (ifp->if_flags & XFS_IFEXTIREC) { - xfs_ext_irec_t *erp; /* irec pointer */ - int erp_idx = 0; /* irec index */ - xfs_extnum_t page_idx = idx; /* ext index in target list */ - - erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 0); - return &erp->er_extbuf[page_idx]; - } else if (ifp->if_bytes) { - return &ifp->if_u1.if_extents[idx]; - } else { - return NULL; - } -} - -/* - * Insert new item(s) into the extent records for incore inode - * fork 'ifp'. 'count' new items are inserted at index 'idx'. - */ -void -xfs_iext_insert( - xfs_inode_t *ip, /* incore inode pointer */ - xfs_extnum_t idx, /* starting index of new items */ - xfs_extnum_t count, /* number of inserted items */ - xfs_bmbt_irec_t *new, /* items to insert */ - int state) /* type of extent conversion */ -{ - xfs_ifork_t *ifp = (state & BMAP_ATTRFORK) ? ip->i_afp : &ip->i_df; - xfs_extnum_t i; /* extent record index */ - - trace_xfs_iext_insert(ip, idx, new, state, _RET_IP_); - - ASSERT(ifp->if_flags & XFS_IFEXTENTS); - xfs_iext_add(ifp, idx, count); - for (i = idx; i < idx + count; i++, new++) - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, i), new); -} - -/* - * This is called when the amount of space required for incore file - * extents needs to be increased. The ext_diff parameter stores the - * number of new extents being added and the idx parameter contains - * the extent index where the new extents will be added. If the new - * extents are being appended, then we just need to (re)allocate and - * initialize the space. Otherwise, if the new extents are being - * inserted into the middle of the existing entries, a bit more work - * is required to make room for the new extents to be inserted. The - * caller is responsible for filling in the new extent entries upon - * return. - */ -void -xfs_iext_add( - xfs_ifork_t *ifp, /* inode fork pointer */ - xfs_extnum_t idx, /* index to begin adding exts */ - int ext_diff) /* number of extents to add */ -{ - int byte_diff; /* new bytes being added */ - int new_size; /* size of extents after adding */ - xfs_extnum_t nextents; /* number of extents in file */ - - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - ASSERT((idx >= 0) && (idx <= nextents)); - byte_diff = ext_diff * sizeof(xfs_bmbt_rec_t); - new_size = ifp->if_bytes + byte_diff; - /* - * If the new number of extents (nextents + ext_diff) - * fits inside the inode, then continue to use the inline - * extent buffer. - */ - if (nextents + ext_diff <= XFS_INLINE_EXTS) { - if (idx < nextents) { - memmove(&ifp->if_u2.if_inline_ext[idx + ext_diff], - &ifp->if_u2.if_inline_ext[idx], - (nextents - idx) * sizeof(xfs_bmbt_rec_t)); - memset(&ifp->if_u2.if_inline_ext[idx], 0, byte_diff); - } - ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; - ifp->if_real_bytes = 0; - } - /* - * Otherwise use a linear (direct) extent list. - * If the extents are currently inside the inode, - * xfs_iext_realloc_direct will switch us from - * inline to direct extent allocation mode. - */ - else if (nextents + ext_diff <= XFS_LINEAR_EXTS) { - xfs_iext_realloc_direct(ifp, new_size); - if (idx < nextents) { - memmove(&ifp->if_u1.if_extents[idx + ext_diff], - &ifp->if_u1.if_extents[idx], - (nextents - idx) * sizeof(xfs_bmbt_rec_t)); - memset(&ifp->if_u1.if_extents[idx], 0, byte_diff); - } - } - /* Indirection array */ - else { - xfs_ext_irec_t *erp; - int erp_idx = 0; - int page_idx = idx; - - ASSERT(nextents + ext_diff > XFS_LINEAR_EXTS); - if (ifp->if_flags & XFS_IFEXTIREC) { - erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 1); - } else { - xfs_iext_irec_init(ifp); - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - erp = ifp->if_u1.if_ext_irec; - } - /* Extents fit in target extent page */ - if (erp && erp->er_extcount + ext_diff <= XFS_LINEAR_EXTS) { - if (page_idx < erp->er_extcount) { - memmove(&erp->er_extbuf[page_idx + ext_diff], - &erp->er_extbuf[page_idx], - (erp->er_extcount - page_idx) * - sizeof(xfs_bmbt_rec_t)); - memset(&erp->er_extbuf[page_idx], 0, byte_diff); - } - erp->er_extcount += ext_diff; - xfs_iext_irec_update_extoffs(ifp, erp_idx + 1, ext_diff); - } - /* Insert a new extent page */ - else if (erp) { - xfs_iext_add_indirect_multi(ifp, - erp_idx, page_idx, ext_diff); - } - /* - * If extent(s) are being appended to the last page in - * the indirection array and the new extent(s) don't fit - * in the page, then erp is NULL and erp_idx is set to - * the next index needed in the indirection array. - */ - else { - int count = ext_diff; - - while (count) { - erp = xfs_iext_irec_new(ifp, erp_idx); - erp->er_extcount = count; - count -= MIN(count, (int)XFS_LINEAR_EXTS); - if (count) { - erp_idx++; - } - } - } - } - ifp->if_bytes = new_size; -} - -/* - * This is called when incore extents are being added to the indirection - * array and the new extents do not fit in the target extent list. The - * erp_idx parameter contains the irec index for the target extent list - * in the indirection array, and the idx parameter contains the extent - * index within the list. The number of extents being added is stored - * in the count parameter. - * - * |-------| |-------| - * | | | | idx - number of extents before idx - * | idx | | count | - * | | | | count - number of extents being inserted at idx - * |-------| |-------| - * | count | | nex2 | nex2 - number of extents after idx + count - * |-------| |-------| - */ -void -xfs_iext_add_indirect_multi( - xfs_ifork_t *ifp, /* inode fork pointer */ - int erp_idx, /* target extent irec index */ - xfs_extnum_t idx, /* index within target list */ - int count) /* new extents being added */ -{ - int byte_diff; /* new bytes being added */ - xfs_ext_irec_t *erp; /* pointer to irec entry */ - xfs_extnum_t ext_diff; /* number of extents to add */ - xfs_extnum_t ext_cnt; /* new extents still needed */ - xfs_extnum_t nex2; /* extents after idx + count */ - xfs_bmbt_rec_t *nex2_ep = NULL; /* temp list for nex2 extents */ - int nlists; /* number of irec's (lists) */ - - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - erp = &ifp->if_u1.if_ext_irec[erp_idx]; - nex2 = erp->er_extcount |