diff options
33 files changed, 300 insertions, 253 deletions
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c index 0d7fcc983b3d..e6149720ce02 100644 --- a/fs/xfs/libxfs/xfs_attr.c +++ b/fs/xfs/libxfs/xfs_attr.c @@ -62,6 +62,7 @@ xfs_attr_args_init( struct xfs_da_args *args, struct xfs_inode *dp, const unsigned char *name, + size_t namelen, int flags) { @@ -74,7 +75,7 @@ xfs_attr_args_init( args->dp = dp; args->flags = flags; args->name = name; - args->namelen = strlen((const char *)name); + args->namelen = namelen; if (args->namelen >= MAXNAMELEN) return -EFAULT; /* match IRIX behaviour */ @@ -139,6 +140,7 @@ int xfs_attr_get( struct xfs_inode *ip, const unsigned char *name, + size_t namelen, unsigned char **value, int *valuelenp, int flags) @@ -154,7 +156,7 @@ xfs_attr_get( if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return -EIO; - error = xfs_attr_args_init(&args, ip, name, flags); + error = xfs_attr_args_init(&args, ip, name, namelen, flags); if (error) return error; @@ -338,6 +340,7 @@ int xfs_attr_set( struct xfs_inode *dp, const unsigned char *name, + size_t namelen, unsigned char *value, int valuelen, int flags) @@ -353,7 +356,7 @@ xfs_attr_set( if (XFS_FORCED_SHUTDOWN(dp->i_mount)) return -EIO; - error = xfs_attr_args_init(&args, dp, name, flags); + error = xfs_attr_args_init(&args, dp, name, namelen, flags); if (error) return error; @@ -442,6 +445,7 @@ int xfs_attr_remove( struct xfs_inode *dp, const unsigned char *name, + size_t namelen, int flags) { struct xfs_mount *mp = dp->i_mount; @@ -453,7 +457,7 @@ xfs_attr_remove( if (XFS_FORCED_SHUTDOWN(dp->i_mount)) return -EIO; - error = xfs_attr_args_init(&args, dp, name, flags); + error = xfs_attr_args_init(&args, dp, name, namelen, flags); if (error) return error; @@ -1007,7 +1011,7 @@ restart: * The INCOMPLETE flag means that we will find the "old" * attr, not the "new" one. */ - args->flags |= XFS_ATTR_INCOMPLETE; + args->op_flags |= XFS_DA_OP_INCOMPLETE; state = xfs_da_state_alloc(); state->args = args; state->mp = mp; diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h index 94badfa1743e..4243b2272642 100644 --- a/fs/xfs/libxfs/xfs_attr.h +++ b/fs/xfs/libxfs/xfs_attr.h @@ -26,7 +26,7 @@ struct xfs_attr_list_context; *========================================================================*/ -#define ATTR_DONTFOLLOW 0x0001 /* -- unused, from IRIX -- */ +#define ATTR_DONTFOLLOW 0x0001 /* -- ignored, from IRIX -- */ #define ATTR_ROOT 0x0002 /* use attrs in root (trusted) namespace */ #define ATTR_TRUST 0x0004 /* -- unused, from IRIX -- */ #define ATTR_SECURE 0x0008 /* use attrs in security namespace */ @@ -37,7 +37,10 @@ struct xfs_attr_list_context; #define ATTR_KERNOVAL 0x2000 /* [kernel] get attr size only, not value */ #define ATTR_INCOMPLETE 0x4000 /* [kernel] return INCOMPLETE attr keys */ -#define ATTR_ALLOC 0x8000 /* allocate xattr buffer on demand */ +#define ATTR_ALLOC 0x8000 /* [kernel] allocate xattr buffer on demand */ + +#define ATTR_KERNEL_FLAGS \ + (ATTR_KERNOTIME | ATTR_KERNOVAL | ATTR_INCOMPLETE | ATTR_ALLOC) #define XFS_ATTR_FLAGS \ { ATTR_DONTFOLLOW, "DONTFOLLOW" }, \ @@ -145,11 +148,13 @@ int xfs_attr_list_int(struct xfs_attr_list_context *); int xfs_inode_hasattr(struct xfs_inode *ip); int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args); int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name, - unsigned char **value, int *valuelenp, int flags); + size_t namelen, unsigned char **value, int *valuelenp, + int flags); int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name, - unsigned char *value, int valuelen, int flags); + size_t namelen, unsigned char *value, int valuelen, int flags); int xfs_attr_set_args(struct xfs_da_args *args); -int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags); +int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, + size_t namelen, int flags); int xfs_attr_remove_args(struct xfs_da_args *args); int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize, int flags, struct attrlist_cursor_kern *cursor); diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c index 08d4b10ae2d5..fed537a4353d 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.c +++ b/fs/xfs/libxfs/xfs_attr_leaf.c @@ -2403,8 +2403,8 @@ xfs_attr3_leaf_lookup_int( * If we are looking for INCOMPLETE entries, show only those. * If we are looking for complete entries, show only those. */ - if ((args->flags & XFS_ATTR_INCOMPLETE) != - (entry->flags & XFS_ATTR_INCOMPLETE)) { + if (!!(args->op_flags & XFS_DA_OP_INCOMPLETE) != + !!(entry->flags & XFS_ATTR_INCOMPLETE)) { continue; } if (entry->flags & XFS_ATTR_LOCAL) { diff --git a/fs/xfs/libxfs/xfs_attr_leaf.h b/fs/xfs/libxfs/xfs_attr_leaf.h index f4a188e28b7b..73615b1dd1a8 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.h +++ b/fs/xfs/libxfs/xfs_attr_leaf.h @@ -39,15 +39,6 @@ struct xfs_attr3_icleaf_hdr { } freemap[XFS_ATTR_LEAF_MAPSIZE]; }; -/* - * Used to keep a list of "remote value" extents when unlinking an inode. - */ -typedef struct xfs_attr_inactive_list { - xfs_dablk_t valueblk; /* block number of value bytes */ - int valuelen; /* number of bytes in value */ -} xfs_attr_inactive_list_t; - - /*======================================================================== * Function prototypes for the kernel. *========================================================================*/ diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c index a6ef5df42669..a266d05df146 100644 --- a/fs/xfs/libxfs/xfs_attr_remote.c +++ b/fs/xfs/libxfs/xfs_attr_remote.c @@ -26,6 +26,23 @@ #define ATTR_RMTVALUE_MAPSIZE 1 /* # of map entries at once */ /* + * Remote Attribute Values + * ======================= + * + * Remote extended attribute values are conceptually simple -- they're written + * to data blocks mapped by an inode's attribute fork, and they have an upper + * size limit of 64k. Setting a value does not involve the XFS log. + * + * However, on a v5 filesystem, maximally sized remote attr values require one + * block more than 64k worth of space to hold both the remote attribute value + * header (64 bytes). On a 4k block filesystem this results in a 68k buffer; + * on a 64k block filesystem, this would be a 128k buffer. Note that the log + * format can only handle a dirty buffer of XFS_MAX_BLOCKSIZE length (64k). + * Therefore, we /must/ ensure that remote attribute value buffers never touch + * the logging system and therefore never have a log item. + */ + +/* * Each contiguous block has a header, so it is not just a simple attribute * length to FSB conversion. */ @@ -401,17 +418,25 @@ xfs_attr_rmtval_get( (map[i].br_startblock != HOLESTARTBLOCK)); dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock); dblkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount); - error = xfs_trans_read_buf(mp, args->trans, - mp->m_ddev_targp, - dblkno, dblkcnt, 0, &bp, - &xfs_attr3_rmt_buf_ops); - if (error) + bp = xfs_buf_read(mp->m_ddev_targp, dblkno, dblkcnt, 0, + &xfs_attr3_rmt_buf_ops); + if (!bp) + return -ENOMEM; + error = bp->b_error; + if (error) { + xfs_buf_ioerror_alert(bp, __func__); + xfs_buf_relse(bp); + + /* bad CRC means corrupted metadata */ + if (error == -EFSBADCRC) + error = -EFSCORRUPTED; return error; + } error = xfs_attr_rmtval_copyout(mp, bp, args->dp->i_ino, &offset, &valuelen, &dst); - xfs_trans_brelse(args->trans, bp); + xfs_buf_relse(bp); if (error) return error; @@ -552,6 +577,33 @@ xfs_attr_rmtval_set( return 0; } +/* Mark stale any incore buffers for the remote value. */ +int +xfs_attr_rmtval_stale( + struct xfs_inode *ip, + struct xfs_bmbt_irec *map, + xfs_buf_flags_t incore_flags) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_buf *bp; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + if (XFS_IS_CORRUPT(mp, map->br_startblock == DELAYSTARTBLOCK) || + XFS_IS_CORRUPT(mp, map->br_startblock == HOLESTARTBLOCK)) + return -EFSCORRUPTED; + + bp = xfs_buf_incore(mp->m_ddev_targp, + XFS_FSB_TO_DADDR(mp, map->br_startblock), + XFS_FSB_TO_BB(mp, map->br_blockcount), incore_flags); + if (bp) { + xfs_buf_stale(bp); + xfs_buf_relse(bp); + } + + return 0; +} + /* * Remove the value associated with an attribute by deleting the * out-of-line buffer that it is stored on. @@ -560,7 +612,6 @@ int xfs_attr_rmtval_remove( struct xfs_da_args *args) { - struct xfs_mount *mp = args->dp->i_mount; xfs_dablk_t lblkno; int blkcnt; int error; @@ -575,9 +626,6 @@ xfs_attr_rmtval_remove( blkcnt = args->rmtblkcnt; while (blkcnt > 0) { struct xfs_bmbt_irec map; - struct xfs_buf *bp; - xfs_daddr_t dblkno; - int dblkcnt; int nmap; /* @@ -588,22 +636,11 @@ xfs_attr_rmtval_remove( blkcnt, &map, &nmap, XFS_BMAPI_ATTRFORK); if (error) return error; - ASSERT(nmap == 1); - ASSERT((map.br_startblock != DELAYSTARTBLOCK) && - (map.br_startblock != HOLESTARTBLOCK)); - - dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock), - dblkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); - - /* - * If the "remote" value is in the cache, remove it. - */ - bp = xfs_buf_incore(mp->m_ddev_targp, dblkno, dblkcnt, XBF_TRYLOCK); - if (bp) { - xfs_buf_stale(bp); - xfs_buf_relse(bp); - bp = NULL; - } + if (XFS_IS_CORRUPT(args->dp->i_mount, nmap != 1)) + return -EFSCORRUPTED; + error = xfs_attr_rmtval_stale(args->dp, &map, XBF_TRYLOCK); + if (error) + return error; lblkno += map.br_blockcount; blkcnt -= map.br_blockcount; diff --git a/fs/xfs/libxfs/xfs_attr_remote.h b/fs/xfs/libxfs/xfs_attr_remote.h index 9d20b66ad379..6fb4572845ce 100644 --- a/fs/xfs/libxfs/xfs_attr_remote.h +++ b/fs/xfs/libxfs/xfs_attr_remote.h @@ -11,5 +11,7 @@ int xfs_attr3_rmt_blocks(struct xfs_mount *mp, int attrlen); int xfs_attr_rmtval_get(struct xfs_da_args *args); int xfs_attr_rmtval_set(struct xfs_da_args *args); int xfs_attr_rmtval_remove(struct xfs_da_args *args); +int xfs_attr_rmtval_stale(struct xfs_inode *ip, struct xfs_bmbt_irec *map, + xfs_buf_flags_t incore_flags); #endif /* __XFS_ATTR_REMOTE_H__ */ diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c index e2cc98931552..b22c7e928eb1 100644 --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -2389,8 +2389,6 @@ xfs_btree_lshift( XFS_BTREE_STATS_ADD(cur, moves, rrecs - 1); if (level > 0) { /* It's a nonleaf. operate on keys and ptrs */ - int i; /* loop index */ - for (i = 0; i < rrecs; i++) { error = xfs_btree_debug_check_ptr(cur, rpp, i + 1, level); if (error) diff --git a/fs/xfs/libxfs/xfs_da_btree.h b/fs/xfs/libxfs/xfs_da_btree.h index e16610d1c14f..0f4fbb0889ff 100644 --- a/fs/xfs/libxfs/xfs_da_btree.h +++ b/fs/xfs/libxfs/xfs_da_btree.h @@ -89,6 +89,7 @@ typedef struct xfs_da_args { #define XFS_DA_OP_OKNOENT 0x0008 /* lookup/add op, ENOENT ok, else die */ #define XFS_DA_OP_CILOOKUP 0x0010 /* lookup to return CI name if found */ #define XFS_DA_OP_ALLOCVAL 0x0020 /* lookup to alloc buffer if found */ +#define XFS_DA_OP_INCOMPLETE 0x0040 /* lookup INCOMPLETE attr keys */ #define XFS_DA_OP_FLAGS \ { XFS_DA_OP_JUSTCHECK, "JUSTCHECK" }, \ @@ -96,7 +97,8 @@ typedef struct xfs_da_args { { XFS_DA_OP_ADDNAME, "ADDNAME" }, \ { XFS_DA_OP_OKNOENT, "OKNOENT" }, \ { XFS_DA_OP_CILOOKUP, "CILOOKUP" }, \ - { XFS_DA_OP_ALLOCVAL, "ALLOCVAL" } + { XFS_DA_OP_ALLOCVAL, "ALLOCVAL" }, \ + { XFS_DA_OP_INCOMPLETE, "INCOMPLETE" } /* * Storage for holding state during Btree searches and split/join ops. diff --git a/fs/xfs/libxfs/xfs_da_format.h b/fs/xfs/libxfs/xfs_da_format.h index 3dee33043e09..734837a9b51a 100644 --- a/fs/xfs/libxfs/xfs_da_format.h +++ b/fs/xfs/libxfs/xfs_da_format.h @@ -217,7 +217,7 @@ typedef struct xfs_dir2_sf_entry { * A 64-bit or 32-bit inode number follows here, at a variable offset * after the name. */ -} xfs_dir2_sf_entry_t; +} __packed xfs_dir2_sf_entry_t; static inline int xfs_dir2_sf_hdr_size(int i8count) { @@ -683,8 +683,6 @@ struct xfs_attr3_leafblock { /* * Flags used in the leaf_entry[i].flags field. - * NOTE: the INCOMPLETE bit must not collide with the flags bits specified - * on the system call, they are "or"ed together for various operations. */ #define XFS_ATTR_LOCAL_BIT 0 /* attr is stored locally */ #define XFS_ATTR_ROOT_BIT 1 /* limit access to trusted attrs */ diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 1b7dcbae051c..77e9fa385980 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -1540,6 +1540,13 @@ typedef struct xfs_bmdr_block { #define BMBT_BLOCKCOUNT_BITLEN 21 #define BMBT_STARTOFF_MASK ((1ULL << BMBT_STARTOFF_BITLEN) - 1) +#define BMBT_BLOCKCOUNT_MASK ((1ULL << BMBT_BLOCKCOUNT_BITLEN) - 1) + +/* + * bmbt records have a file offset (block) field that is 54 bits wide, so this + * is the largest xfs_fileoff_t that we ever expect to see. + */ +#define XFS_MAX_FILEOFF (BMBT_STARTOFF_MASK + BMBT_BLOCKCOUNT_MASK) typedef struct xfs_bmbt_rec { __be64 l0, l1; diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h index 8ef31d71a9c7..9bac0d2e56dc 100644 --- a/fs/xfs/libxfs/xfs_log_format.h +++ b/fs/xfs/libxfs/xfs_log_format.h @@ -462,11 +462,20 @@ static inline uint xfs_log_dinode_size(int version) #define XFS_BLF_GDQUOT_BUF (1<<4) /* - * This is the structure used to lay out a buf log item in the - * log. The data map describes which 128 byte chunks of the buffer - * have been logged. - */ -#define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) + * This is the structure used to lay out a buf log item in the log. The data + * map describes which 128 byte chunks of the buffer have been logged. + * + * The placement of blf_map_size causes blf_data_map to start at an odd + * multiple of sizeof(unsigned int) offset within the struct. Because the data + * bitmap size will always be an even number, the end of the data_map (and + * therefore the structure) will also be at an odd multiple of sizeof(unsigned + * int). Some 64-bit compilers will insert padding at the end of the struct to + * ensure 64-bit alignment of blf_blkno, but 32-bit ones will not. Therefore, + * XFS_BLF_DATAMAP_SIZE must be an odd number to make the padding explicit and + * keep the structure size consistent between 32-bit and 64-bit platforms. + */ +#define __XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) +#define XFS_BLF_DATAMAP_SIZE (__XFS_BLF_DATAMAP_SIZE + 1) typedef struct xfs_buf_log_format { unsigned short blf_type; /* buf log item type indicator */ diff --git a/fs/xfs/scrub/repair.h b/fs/xfs/scrub/repair.h index 60c61d7052a8..c3422403b169 100644 --- a/fs/xfs/scrub/repair.h +++ b/fs/xfs/scrub/repair.h @@ -75,7 +75,6 @@ static inline xfs_extlen_t xrep_calc_ag_resblks( struct xfs_scrub *sc) { - ASSERT(!(sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR)); return 0; } diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 91693fce34a8..cd743fad8478 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -145,7 +145,8 @@ xfs_get_acl(struct inode *inode, int type) * go out to the disk. */ len = XFS_ACL_MAX_SIZE(ip->i_mount); - error = xfs_attr_get(ip, ea_name, (unsigned char **)&xfs_acl, &len, + error = xfs_attr_get(ip, ea_name, strlen(ea_name), + (unsigned char **)&xfs_acl, &len, ATTR_ALLOC | ATTR_ROOT); if (error) { /* @@ -196,15 +197,17 @@ __xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) len -= sizeof(struct xfs_acl_entry) * (XFS_ACL_MAX_ENTRIES(ip->i_mount) - acl->a_count); - error = xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl, - len, ATTR_ROOT); + error = xfs_attr_set(ip, ea_name, strlen(ea_name), + (unsigned char *)xfs_acl, len, ATTR_ROOT); kmem_free(xfs_acl); } else { /* * A NULL ACL argument means we want to remove the ACL. */ - error = xfs_attr_remove(ip, ea_name, ATTR_ROOT); + error = xfs_attr_remove(ip, ea_name, + strlen(ea_name), + ATTR_ROOT); /* * If the attribute didn't exist to start with that's fine. diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c index 5ff49523d8ea..8fbb841cd6fe 100644 --- a/fs/xfs/xfs_attr_inactive.c +++ b/fs/xfs/xfs_attr_inactive.c @@ -25,22 +25,18 @@ #include "xfs_error.h" /* - * Look at all the extents for this logical region, - * invalidate any buffers that are incore/in transactions. + * Invalidate any incore buffers associated with this remote attribute value + * extent. We never log remote attribute value buffers, which means that they + * won't be attached to a transaction and are therefore safe to mark stale. + * The actual bunmapi will be taken care of later. */ STATIC int -xfs_attr3_leaf_freextent( - struct xfs_trans **trans, +xfs_attr3_rmt_stale( struct xfs_inode *dp, xfs_dablk_t blkno, int blkcnt) { struct xfs_bmbt_irec map; - struct xfs_buf *bp; - xfs_dablk_t tblkno; - xfs_daddr_t dblkno; - int tblkcnt; - int dblkcnt; int nmap; int error; @@ -48,47 +44,29 @@ xfs_attr3_leaf_freextent( * Roll through the "value", invalidating the attribute value's * blocks. */ - tblkno = blkno; - tblkcnt = blkcnt; - while (tblkcnt > 0) { + while (blkcnt > 0) { /* * Try to remember where we decided to put the value. */ nmap = 1; - error = xfs_bmapi_read(dp, (xfs_fileoff_t)tblkno, tblkcnt, + error = xfs_bmapi_read(dp, (xfs_fileoff_t)blkno, blkcnt, &map, &nmap, XFS_BMAPI_ATTRFORK); - if (error) { + if (error) return error; - } - ASSERT(nmap == 1); - ASSERT(map.br_startblock != DELAYSTARTBLOCK); + if (XFS_IS_CORRUPT(dp->i_mount, nmap != 1)) + return -EFSCORRUPTED; /* - * If it's a hole, these are already unmapped - * so there's nothing to invalidate. + * Mark any incore buffers for the remote value as stale. We + * never log remote attr value buffers, so the buffer should be + * easy to kill. */ - if (map.br_startblock != HOLESTARTBLOCK) { - - dblkno = XFS_FSB_TO_DADDR(dp->i_mount, - map.br_startblock); - dblkcnt = XFS_FSB_TO_BB(dp->i_mount, - map.br_blockcount); - bp = xfs_trans_get_buf(*trans, - dp->i_mount->m_ddev_targp, - dblkno, dblkcnt, 0); - if (!bp) - return -ENOMEM; - xfs_trans_binval(*trans, bp); - /* - * Roll to next transaction. - */ - error = xfs_trans_roll_inode(trans, dp); - if (error) - return error; - } + error = xfs_attr_rmtval_stale(dp, &map, 0); + if (error) + return error; - tblkno += map.br_blockcount; - tblkcnt -= map.br_blockcount; + blkno += map.br_blockcount; + blkcnt -= map.br_blockcount; } return 0; @@ -102,86 +80,45 @@ xfs_attr3_leaf_freextent( */ STATIC int xfs_attr3_leaf_inactive( - struct xfs_trans **trans, - struct xfs_inode *dp, - struct xfs_buf *bp) + struct xfs_trans **trans, + struct xfs_inode *dp, + struct xfs_buf *bp) { - struct xfs_attr_leafblock *leaf; - struct xfs_attr3_icleaf_hdr ichdr; - struct xfs_attr_leaf_entry *entry; + struct xfs_attr3_icleaf_hdr ichdr; + struct xfs_mount *mp = bp->b_mount; + struct xfs_attr_leafblock *leaf = bp->b_addr; + struct xfs_attr_leaf_entry *entry; struct xfs_attr_leaf_name_remote *name_rmt; - struct xfs_attr_inactive_list *list; - struct xfs_attr_inactive_list *lp; - int error; - int count; - int size; - int tmp; - int i; - struct xfs_mount *mp = bp->b_mount; + int error = 0; + int i; - leaf = bp->b_addr; xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr, leaf); /* - * Count the number of "remote" value extents. + * Find the remote value extents for this leaf and invalidate their + * incore buffers. */ - count = 0; entry = xfs_attr3_leaf_entryp(leaf); for (i = 0; i < ichdr.count; entry++, i++) { - if (be16_to_cpu(entry->nameidx) && - ((entry->flags & XFS_ATTR_LOCAL) == 0)) { - name_rmt = xfs_attr3_leaf_name_remote(leaf, i); - if (name_rmt->valueblk) - count++; - } - } + int blkcnt; - /* - * If there are no "remote" values, we're done. - */ - if (count == 0) { - xfs_trans_brelse(*trans, bp); - return 0; - } - - /* - * Allocate storage for a list of all the "remote" value extents. - */ - size = count * sizeof(xfs_attr_inactive_list_t); - list = kmem_alloc(size, 0); - - /* - * Identify each of the "remote" value extents. - */ - lp = list; - entry = xfs_attr3_leaf_entryp(leaf); - for (i = 0; i < ichdr.count; entry++, i++) { - if (be16_to_cpu(entry->nameidx) && - ((entry->flags & XFS_ATTR_LOCAL) == 0)) { - name_rmt = xfs_attr3_leaf_name_remote(leaf, i); - if (name_rmt->valueblk) { - lp->valueblk = be32_to_cpu(name_rmt->valueblk); - lp->valuelen = xfs_attr3_rmt_blocks(dp->i_mount, - be32_to_cpu(name_rmt->valuelen)); - lp++; - } - } - } - xfs_trans_brelse(*trans, bp); /* unlock for trans. in freextent() */ + if (!entry->nameidx || (entry->flags & XFS_ATTR_LOCAL)) + continue; - /* - * Invalidate each of the "remote" value extents. - */ - error = 0; - for (lp = list, i = 0; i < count; i++, lp++) { - tmp = xfs_attr3_leaf_freextent(trans, dp, - lp->valueblk, lp->valuelen); + name_rmt = xfs_attr3_leaf_name_remote(leaf, i); + if (!name_rmt->valueblk) + continue; - if (error == 0) - error = tmp; /* save only the 1st errno */ + blkcnt = xfs_attr3_rmt_blocks(dp->i_mount, + be32_to_cpu(name_rmt->valuelen)); + error = xfs_attr3_rmt_stale(dp, + be32_to_cpu(name_rmt->valueblk), blkcnt); + if (error) + goto err; } - kmem_free(list); + xfs_trans_brelse(*trans, bp); +err: return error; } diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 3984779e5911..5be8973a452c 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -27,6 +27,23 @@ static inline struct xfs_buf_log_item *BUF_ITEM(struct xfs_log_item *lip) STATIC void xfs_buf_do_callbacks(struct xfs_buf *bp); +/* Is this log iovec plausibly large enough to contain the buffer log format? */ +bool +xfs_buf_log_check_iovec( + struct xfs_log_iovec *iovec) +{ + struct xfs_buf_log_format *blfp = iovec->i_addr; + char *bmp_end; + char *item_end; + + if (offsetof(struct xfs_buf_log_format, blf_data_map) > iovec->i_len) + return false; + + item_end = (char *)iovec->i_addr + iovec->i_len; + bmp_end = (char *)&blfp->blf_data_map[blfp->blf_map_size]; + return bmp_end <= item_end; +} + static inline int xfs_buf_log_format_size( struct xfs_buf_log_format *blfp) @@ -688,7 +705,7 @@ static const struct xfs_item_ops xfs_buf_item_ops = { .iop_push = xfs_buf_item_push, }; -STATIC int +STATIC void xfs_buf_item_get_format( struct xfs_buf_log_item *bip, int count) @@ -698,14 +715,11 @@ xfs_buf_item_get_format( if (count == 1) { bip->bli_formats = &bip->__bli_format; - return 0; + return; } bip->bli_formats = kmem_zalloc(count * sizeof(struct xfs_buf_log_format), 0); - if (!bip->bli_formats) - return -ENOMEM; - return 0; } STATIC void @@ -731,7 +745,6 @@ xfs_buf_item_init( struct xfs_buf_log_item *bip = bp->b_log_item; int chunks; int map_size; - int error; int i; /* @@ -760,19 +773,22 @@ xfs_buf_item_init( * Discontiguous buffer support follows the layout of the underlying * buffer. This makes the implementation as simple as possible. */ - error = xfs_buf_item_get_format(bip, bp->b_map_count); - ASSERT(error == 0); - if (error) { /* to stop gcc throwing set-but-unused warnings */ - kmem_cache_free(xfs_buf_item_zone, bip); - return error; - } - + xfs_buf_item_get_format(bip, bp->b_map_count); for (i = 0; i < bip->bli_format_count; i++) { chunks = DIV_ROUND_UP(BBTOB(bp->b_maps[i].bm_len), XFS_BLF_CHUNK); map_size = DIV_ROUND_UP(chunks, NBWORD); + if (map_size > XFS_BLF_DATAMAP_SIZE) { + kmem_cache_free(xfs_buf_item_zone, bip); + xfs_err(mp, + "buffer item dirty bitmap (%u uints) too small to reflect %u bytes!", + map_size, + BBTOB(bp->b_maps[i].bm_len)); + return -EFSCORRUPTED; + } + bip->bli_formats[i].blf_type = XFS_LI_BUF; bip->bli_formats[i].blf_blkno = bp->b_maps[i].bm_bn; bip->bli_formats[i].blf_len = bp->b_maps[i].bm_len; @@ -805,6 +821,9 @@ xfs_buf_item_log_segment( uint end_bit; uint mask; + ASSERT(first < XFS_BLF_DATAMAP_SIZE * XFS_BLF_CHUNK * NBWORD); + ASSERT(last < XFS_BLF_DATAMAP_SIZE * XFS_BLF_CHUNK * NBWORD); + /* * Convert byte offsets to bit numbers. */ diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h index 4a054b11011a..30114b510332 100644 --- a/fs/xfs/xfs_buf_item.h +++ b/fs/xfs/xfs_buf_item.h @@ -61,6 +61,7 @@ void xfs_buf_iodone_callbacks(struct xfs_buf *); void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *); bool xfs_buf_resubmit_failed_buffers(struct xfs_buf *, struct list_head *); +bool xfs_buf_log_check_iovec(struct xfs_log_iovec *iovec); extern kmem_zone_t *xfs_buf_item_zone; diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 2bff21ca9d78..9cfd3209f52b 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -137,7 +137,7 @@ xfs_qm_adjust_dqtimers( (d->d_blk_hardlimit && (be64_to_cpu(d->d_bcount) > be64_to_cpu(d->d_blk_hardlimit)))) { - d->d_btimer = cpu_to_be32(get_seconds() + + d->d_btimer = cpu_to_be32(ktime_get_real_seconds() + mp->m_quotainfo->qi_btimelimit); } else { d->d_bwarns = 0; @@ -160,7 +160,7 @@ xfs_qm_adjust_dqtimers( (d->d_ino_hardlimit && (be64_to_cpu(d->d_icount) > be64_to_cpu(d->d_ino_hardlimit)))) { - d->d_itimer = cpu_to_be32(get_seconds() + + d->d_itimer = cpu_to_be32(ktime_get_real_seconds() + mp->m_quotainfo->qi_itimelimit); } else { d->d_iwarns = 0; @@ -183,7 +183,7 @@ xfs_qm_adjust_dqtimers( (d->d_rtb_hardlimit && (be64_to_cpu(d->d_rtbcount) > be64_to_cpu(d->d_rtb_hardlimit)))) { - d->d_rtbtimer = cpu_to_be32(get_seconds() + + d->d_rtbtimer = cpu_to_be32(ktime_get_real_seconds() + mp->m_quotainfo->qi_rtbtimelimit); } else { d->d_rtbwarns = 0; diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index c93250108952..b8a4a3f29b36 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -187,7 +187,12 @@ xfs_file_dio_aio_read( file_accessed(iocb->ki_filp); - xfs_ilock(ip, XFS_IOLOCK_SHARED); + if (iocb->ki_flags & IOCB_NOWAIT) { + if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED)) + return -EAGAIN; + } else { + xfs_ilock(ip, XFS_I |