X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;ds=sidebyside;f=fs%2Fxfs%2Fxfs_attr.c;h=046cf3d7f52fbd748d3f776e55587865564f2a5b;hb=c24b5dfadc4a4f7a13af373067871479c74455e6;hp=20fe3fe9d3417aabcd566ddad7719d3653ad4443;hpb=36a279686bc02d340eb213a9f2a0b67e50de64b4;p=mirror_ubuntu-artful-kernel.git diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c index 20fe3fe9d341..046cf3d7f52f 100644 --- a/fs/xfs/xfs_attr.c +++ b/fs/xfs/xfs_attr.c @@ -17,10 +17,11 @@ */ #include "xfs.h" #include "xfs_fs.h" -#include "xfs_types.h" +#include "xfs_format.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_trans.h" +#include "xfs_trans_priv.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" @@ -32,13 +33,13 @@ #include "xfs_alloc.h" #include "xfs_inode_item.h" #include "xfs_bmap.h" +#include "xfs_bmap_util.h" #include "xfs_attr.h" #include "xfs_attr_leaf.h" #include "xfs_attr_remote.h" #include "xfs_error.h" #include "xfs_quota.h" #include "xfs_trans_space.h" -#include "xfs_vnodeops.h" #include "xfs_trace.h" /* @@ -62,7 +63,6 @@ STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args); STATIC int xfs_attr_leaf_get(xfs_da_args_t *args); STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args); STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args); -STATIC int xfs_attr_leaf_list(xfs_attr_list_context_t *context); /* * Internal routines when attribute list is more than one block. @@ -70,7 +70,6 @@ STATIC int xfs_attr_leaf_list(xfs_attr_list_context_t *context); STATIC int xfs_attr_node_get(xfs_da_args_t *args); STATIC int xfs_attr_node_addname(xfs_da_args_t *args); STATIC int xfs_attr_node_removename(xfs_da_args_t *args); -STATIC int xfs_attr_node_list(xfs_attr_list_context_t *context); STATIC int xfs_attr_fillstate(xfs_da_state_t *state); STATIC int xfs_attr_refillstate(xfs_da_state_t *state); @@ -90,7 +89,7 @@ xfs_attr_name_to_xname( return 0; } -STATIC int +int xfs_inode_hasattr( struct xfs_inode *ip) { @@ -611,228 +610,6 @@ xfs_attr_remove( return xfs_attr_remove_int(dp, &xname, flags); } -int -xfs_attr_list_int(xfs_attr_list_context_t *context) -{ - int error; - xfs_inode_t *dp = context->dp; - - XFS_STATS_INC(xs_attr_list); - - if (XFS_FORCED_SHUTDOWN(dp->i_mount)) - return EIO; - - xfs_ilock(dp, XFS_ILOCK_SHARED); - - /* - * Decide on what work routines to call based on the inode size. - */ - if (!xfs_inode_hasattr(dp)) { - error = 0; - } else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { - error = xfs_attr_shortform_list(context); - } else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) { - error = xfs_attr_leaf_list(context); - } else { - error = xfs_attr_node_list(context); - } - - xfs_iunlock(dp, XFS_ILOCK_SHARED); - - return error; -} - -#define ATTR_ENTBASESIZE /* minimum bytes used by an attr */ \ - (((struct attrlist_ent *) 0)->a_name - (char *) 0) -#define ATTR_ENTSIZE(namelen) /* actual bytes used by an attr */ \ - ((ATTR_ENTBASESIZE + (namelen) + 1 + sizeof(u_int32_t)-1) \ - & ~(sizeof(u_int32_t)-1)) - -/* - * Format an attribute and copy it out to the user's buffer. - * Take care to check values and protect against them changing later, - * we may be reading them directly out of a user buffer. - */ -/*ARGSUSED*/ -STATIC int -xfs_attr_put_listent( - xfs_attr_list_context_t *context, - int flags, - unsigned char *name, - int namelen, - int valuelen, - unsigned char *value) -{ - struct attrlist *alist = (struct attrlist *)context->alist; - attrlist_ent_t *aep; - int arraytop; - - ASSERT(!(context->flags & ATTR_KERNOVAL)); - ASSERT(context->count >= 0); - ASSERT(context->count < (ATTR_MAX_VALUELEN/8)); - ASSERT(context->firstu >= sizeof(*alist)); - ASSERT(context->firstu <= context->bufsize); - - /* - * Only list entries in the right namespace. - */ - if (((context->flags & ATTR_SECURE) == 0) != - ((flags & XFS_ATTR_SECURE) == 0)) - return 0; - if (((context->flags & ATTR_ROOT) == 0) != - ((flags & XFS_ATTR_ROOT) == 0)) - return 0; - - arraytop = sizeof(*alist) + - context->count * sizeof(alist->al_offset[0]); - context->firstu -= ATTR_ENTSIZE(namelen); - if (context->firstu < arraytop) { - trace_xfs_attr_list_full(context); - alist->al_more = 1; - context->seen_enough = 1; - return 1; - } - - aep = (attrlist_ent_t *)&context->alist[context->firstu]; - aep->a_valuelen = valuelen; - memcpy(aep->a_name, name, namelen); - aep->a_name[namelen] = 0; - alist->al_offset[context->count++] = context->firstu; - alist->al_count = context->count; - trace_xfs_attr_list_add(context); - return 0; -} - -/* - * Generate a list of extended attribute names and optionally - * also value lengths. Positive return value follows the XFS - * convention of being an error, zero or negative return code - * is the length of the buffer returned (negated), indicating - * success. - */ -int -xfs_attr_list( - xfs_inode_t *dp, - char *buffer, - int bufsize, - int flags, - attrlist_cursor_kern_t *cursor) -{ - xfs_attr_list_context_t context; - struct attrlist *alist; - int error; - - /* - * Validate the cursor. - */ - if (cursor->pad1 || cursor->pad2) - return(XFS_ERROR(EINVAL)); - if ((cursor->initted == 0) && - (cursor->hashval || cursor->blkno || cursor->offset)) - return XFS_ERROR(EINVAL); - - /* - * Check for a properly aligned buffer. - */ - if (((long)buffer) & (sizeof(int)-1)) - return XFS_ERROR(EFAULT); - if (flags & ATTR_KERNOVAL) - bufsize = 0; - - /* - * Initialize the output buffer. - */ - memset(&context, 0, sizeof(context)); - context.dp = dp; - context.cursor = cursor; - context.resynch = 1; - context.flags = flags; - context.alist = buffer; - context.bufsize = (bufsize & ~(sizeof(int)-1)); /* align */ - context.firstu = context.bufsize; - context.put_listent = xfs_attr_put_listent; - - alist = (struct attrlist *)context.alist; - alist->al_count = 0; - alist->al_more = 0; - alist->al_offset[0] = context.bufsize; - - error = xfs_attr_list_int(&context); - ASSERT(error >= 0); - return error; -} - -int /* error */ -xfs_attr_inactive(xfs_inode_t *dp) -{ - xfs_trans_t *trans; - xfs_mount_t *mp; - int error; - - mp = dp->i_mount; - ASSERT(! XFS_NOT_DQATTACHED(mp, dp)); - - xfs_ilock(dp, XFS_ILOCK_SHARED); - if (!xfs_inode_hasattr(dp) || - dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { - xfs_iunlock(dp, XFS_ILOCK_SHARED); - return 0; - } - xfs_iunlock(dp, XFS_ILOCK_SHARED); - - /* - * Start our first transaction of the day. - * - * All future transactions during this code must be "chained" off - * this one via the trans_dup() call. All transactions will contain - * the inode, and the inode will always be marked with trans_ihold(). - * Since the inode will be locked in all transactions, we must log - * the inode in every transaction to let it float upward through - * the log. - */ - trans = xfs_trans_alloc(mp, XFS_TRANS_ATTRINVAL); - if ((error = xfs_trans_reserve(trans, 0, XFS_ATTRINVAL_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ATTRINVAL_LOG_COUNT))) { - xfs_trans_cancel(trans, 0); - return(error); - } - xfs_ilock(dp, XFS_ILOCK_EXCL); - - /* - * No need to make quota reservations here. We expect to release some - * blocks, not allocate, in the common case. - */ - xfs_trans_ijoin(trans, dp, 0); - - /* - * Decide on what work routines to call based on the inode size. - */ - if (!xfs_inode_hasattr(dp) || - dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { - error = 0; - goto out; - } - error = xfs_attr3_root_inactive(&trans, dp); - if (error) - goto out; - - error = xfs_itruncate_extents(&trans, dp, XFS_ATTR_FORK, 0); - if (error) - goto out; - - error = xfs_trans_commit(trans, XFS_TRANS_RELEASE_LOG_RES); - xfs_iunlock(dp, XFS_ILOCK_EXCL); - - return(error); - -out: - xfs_trans_cancel(trans, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT); - xfs_iunlock(dp, XFS_ILOCK_EXCL); - return(error); -} - - /*======================================================================== * External routines when attribute list is inside the inode @@ -1166,28 +943,6 @@ xfs_attr_leaf_get(xfs_da_args_t *args) return error; } -/* - * Copy out attribute entries for attr_list(), for leaf attribute lists. - */ -STATIC int -xfs_attr_leaf_list(xfs_attr_list_context_t *context) -{ - int error; - struct xfs_buf *bp; - - trace_xfs_attr_leaf_list(context); - - context->cursor->blkno = 0; - error = xfs_attr3_leaf_read(NULL, context->dp, 0, -1, &bp); - if (error) - return XFS_ERROR(error); - - error = xfs_attr3_leaf_list_int(bp, context); - xfs_trans_brelse(NULL, bp); - return XFS_ERROR(error); -} - - /*======================================================================== * External routines when attribute list size > XFS_LBSIZE(mp). *========================================================================*/ @@ -1780,143 +1535,3 @@ xfs_attr_node_get(xfs_da_args_t *args) xfs_da_state_free(state); return(retval); } - -STATIC int /* error */ -xfs_attr_node_list(xfs_attr_list_context_t *context) -{ - attrlist_cursor_kern_t *cursor; - xfs_attr_leafblock_t *leaf; - xfs_da_intnode_t *node; - struct xfs_attr3_icleaf_hdr leafhdr; - struct xfs_da3_icnode_hdr nodehdr; - struct xfs_da_node_entry *btree; - int error, i; - struct xfs_buf *bp; - - trace_xfs_attr_node_list(context); - - cursor = context->cursor; - cursor->initted = 1; - - /* - * Do all sorts of validation on the passed-in cursor structure. - * If anything is amiss, ignore the cursor and look up the hashval - * starting from the btree root. - */ - bp = NULL; - if (cursor->blkno > 0) { - error = xfs_da3_node_read(NULL, context->dp, cursor->blkno, -1, - &bp, XFS_ATTR_FORK); - if ((error != 0) && (error != EFSCORRUPTED)) - return(error); - if (bp) { - struct xfs_attr_leaf_entry *entries; - - node = bp->b_addr; - switch (be16_to_cpu(node->hdr.info.magic)) { - case XFS_DA_NODE_MAGIC: - case XFS_DA3_NODE_MAGIC: - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - break; - case XFS_ATTR_LEAF_MAGIC: - case XFS_ATTR3_LEAF_MAGIC: - leaf = bp->b_addr; - xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); - entries = xfs_attr3_leaf_entryp(leaf); - if (cursor->hashval > be32_to_cpu( - entries[leafhdr.count - 1].hashval)) { - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - } else if (cursor->hashval <= be32_to_cpu( - entries[0].hashval)) { - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - } - break; - default: - trace_xfs_attr_list_wrong_blk(context); - xfs_trans_brelse(NULL, bp); - bp = NULL; - } - } - } - - /* - * We did not find what we expected given the cursor's contents, - * so we start from the top and work down based on the hash value. - * Note that start of node block is same as start of leaf block. - */ - if (bp == NULL) { - cursor->blkno = 0; - for (;;) { - __uint16_t magic; - - error = xfs_da3_node_read(NULL, context->dp, - cursor->blkno, -1, &bp, - XFS_ATTR_FORK); - if (error) - return(error); - node = bp->b_addr; - magic = be16_to_cpu(node->hdr.info.magic); - if (magic == XFS_ATTR_LEAF_MAGIC || - magic == XFS_ATTR3_LEAF_MAGIC) - break; - if (magic != XFS_DA_NODE_MAGIC && - magic != XFS_DA3_NODE_MAGIC) { - XFS_CORRUPTION_ERROR("xfs_attr_node_list(3)", - XFS_ERRLEVEL_LOW, - context->dp->i_mount, - node); - xfs_trans_brelse(NULL, bp); - return XFS_ERROR(EFSCORRUPTED); - } - - xfs_da3_node_hdr_from_disk(&nodehdr, node); - btree = xfs_da3_node_tree_p(node); - for (i = 0; i < nodehdr.count; btree++, i++) { - if (cursor->hashval - <= be32_to_cpu(btree->hashval)) { - cursor->blkno = be32_to_cpu(btree->before); - trace_xfs_attr_list_node_descend(context, - btree); - break; - } - } - if (i == nodehdr.count) { - xfs_trans_brelse(NULL, bp); - return 0; - } - xfs_trans_brelse(NULL, bp); - } - } - ASSERT(bp != NULL); - - /* - * Roll upward through the blocks, processing each leaf block in - * order. As long as there is space in the result buffer, keep - * adding the information. - */ - for (;;) { - leaf = bp->b_addr; - error = xfs_attr3_leaf_list_int(bp, context); - if (error) { - xfs_trans_brelse(NULL, bp); - return error; - } - xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); - if (context->seen_enough || leafhdr.forw == 0) - break; - cursor->blkno = leafhdr.forw; - xfs_trans_brelse(NULL, bp); - error = xfs_attr3_leaf_read(NULL, context->dp, cursor->blkno, -1, - &bp); - if (error) - return error; - } - xfs_trans_brelse(NULL, bp); - return 0; -}