#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
+#include <linux/security.h>
#define MLOG_MASK_PREFIX ML_XATTR
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "file.h"
#include "symlink.h"
#define OCFS2_XATTR_ROOT_SIZE (sizeof(struct ocfs2_xattr_def_value_root))
#define OCFS2_XATTR_INLINE_SIZE 80
+#define OCFS2_XATTR_HEADER_GAP 4
+#define OCFS2_XATTR_FREE_IN_IBODY (OCFS2_MIN_XATTR_INLINE_SIZE \
+ - sizeof(struct ocfs2_xattr_header) \
+ - OCFS2_XATTR_HEADER_GAP)
+#define OCFS2_XATTR_FREE_IN_BLOCK(ptr) ((ptr)->i_sb->s_blocksize \
+ - sizeof(struct ocfs2_xattr_block) \
+ - sizeof(struct ocfs2_xattr_header) \
+ - OCFS2_XATTR_HEADER_GAP)
static struct ocfs2_xattr_def_value_root def_xv = {
.xv.xr_list.l_count = cpu_to_le16(1),
struct xattr_handler *ocfs2_xattr_handlers[] = {
&ocfs2_xattr_user_handler,
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ &ocfs2_xattr_acl_access_handler,
+ &ocfs2_xattr_acl_default_handler,
+#endif
&ocfs2_xattr_trusted_handler,
+ &ocfs2_xattr_security_handler,
NULL
};
static struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {
[OCFS2_XATTR_INDEX_USER] = &ocfs2_xattr_user_handler,
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ [OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS]
+ = &ocfs2_xattr_acl_access_handler,
+ [OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT]
+ = &ocfs2_xattr_acl_default_handler,
+#endif
[OCFS2_XATTR_INDEX_TRUSTED] = &ocfs2_xattr_trusted_handler,
+ [OCFS2_XATTR_INDEX_SECURITY] = &ocfs2_xattr_security_handler,
};
struct ocfs2_xattr_info {
static int ocfs2_delete_xattr_index_block(struct inode *inode,
struct buffer_head *xb_bh);
+static int ocfs2_mv_xattr_buckets(struct inode *inode, handle_t *handle,
+ u64 src_blk, u64 last_blk, u64 to_blk,
+ unsigned int start_bucket,
+ u32 *first_hash);
static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
{
int rc;
rc = ocfs2_read_blocks(bucket->bu_inode, xb_blkno,
- bucket->bu_blocks, bucket->bu_bhs, 0);
+ bucket->bu_blocks, bucket->bu_bhs, 0,
+ NULL);
+ if (!rc) {
+ spin_lock(&OCFS2_SB(bucket->bu_inode->i_sb)->osb_xattr_lock);
+ rc = ocfs2_validate_meta_ecc_bhs(bucket->bu_inode->i_sb,
+ bucket->bu_bhs,
+ bucket->bu_blocks,
+ &bucket_xh(bucket)->xh_check);
+ spin_unlock(&OCFS2_SB(bucket->bu_inode->i_sb)->osb_xattr_lock);
+ if (rc)
+ mlog_errno(rc);
+ }
+
if (rc)
ocfs2_xattr_bucket_relse(bucket);
return rc;
{
int i;
+ spin_lock(&OCFS2_SB(bucket->bu_inode->i_sb)->osb_xattr_lock);
+ ocfs2_compute_meta_ecc_bhs(bucket->bu_inode->i_sb,
+ bucket->bu_bhs, bucket->bu_blocks,
+ &bucket_xh(bucket)->xh_check);
+ spin_unlock(&OCFS2_SB(bucket->bu_inode->i_sb)->osb_xattr_lock);
+
for (i = 0; i < bucket->bu_blocks; i++)
ocfs2_journal_dirty(handle, bucket->bu_bhs[i]);
}
}
}
+static int ocfs2_validate_xattr_block(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_xattr_block *xb =
+ (struct ocfs2_xattr_block *)bh->b_data;
+
+ mlog(0, "Validating xattr block %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &xb->xb_check);
+ if (rc)
+ return rc;
+
+ /*
+ * Errors after here are fatal
+ */
+
+ if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
+ ocfs2_error(sb,
+ "Extended attribute block #%llu has bad "
+ "signature %.*s",
+ (unsigned long long)bh->b_blocknr, 7,
+ xb->xb_signature);
+ return -EINVAL;
+ }
+
+ if (le64_to_cpu(xb->xb_blkno) != bh->b_blocknr) {
+ ocfs2_error(sb,
+ "Extended attribute block #%llu has an "
+ "invalid xb_blkno of %llu",
+ (unsigned long long)bh->b_blocknr,
+ (unsigned long long)le64_to_cpu(xb->xb_blkno));
+ return -EINVAL;
+ }
+
+ if (le32_to_cpu(xb->xb_fs_generation) != OCFS2_SB(sb)->fs_generation) {
+ ocfs2_error(sb,
+ "Extended attribute block #%llu has an invalid "
+ "xb_fs_generation of #%u",
+ (unsigned long long)bh->b_blocknr,
+ le32_to_cpu(xb->xb_fs_generation));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ocfs2_read_xattr_block(struct inode *inode, u64 xb_blkno,
+ struct buffer_head **bh)
+{
+ int rc;
+ struct buffer_head *tmp = *bh;
+
+ rc = ocfs2_read_block(inode, xb_blkno, &tmp,
+ ocfs2_validate_xattr_block);
+
+ /* If ocfs2_read_block() got us a new bh, pass it up. */
+ if (!rc && !*bh)
+ *bh = tmp;
+
+ return rc;
+}
+
static inline const char *ocfs2_xattr_prefix(int name_index)
{
struct xattr_handler *handler = NULL;
return;
}
+static int ocfs2_xattr_entry_real_size(int name_len, size_t value_len)
+{
+ int size = 0;
+
+ if (value_len <= OCFS2_XATTR_INLINE_SIZE)
+ size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_SIZE(value_len);
+ else
+ size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
+ size += sizeof(struct ocfs2_xattr_entry);
+
+ return size;
+}
+
+int ocfs2_calc_security_init(struct inode *dir,
+ struct ocfs2_security_xattr_info *si,
+ int *want_clusters,
+ int *xattr_credits,
+ struct ocfs2_alloc_context **xattr_ac)
+{
+ int ret = 0;
+ struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+ int s_size = ocfs2_xattr_entry_real_size(strlen(si->name),
+ si->value_len);
+
+ /*
+ * The max space of security xattr taken inline is
+ * 256(name) + 80(value) + 16(entry) = 352 bytes,
+ * So reserve one metadata block for it is ok.
+ */
+ if (dir->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE ||
+ s_size > OCFS2_XATTR_FREE_IN_IBODY) {
+ ret = ocfs2_reserve_new_metadata_blocks(osb, 1, xattr_ac);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+ *xattr_credits += OCFS2_XATTR_BLOCK_CREATE_CREDITS;
+ }
+
+ /* reserve clusters for xattr value which will be set in B tree*/
+ if (si->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ int new_clusters = ocfs2_clusters_for_bytes(dir->i_sb,
+ si->value_len);
+
+ *xattr_credits += ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+ return ret;
+}
+
+int ocfs2_calc_xattr_init(struct inode *dir,
+ struct buffer_head *dir_bh,
+ int mode,
+ struct ocfs2_security_xattr_info *si,
+ int *want_clusters,
+ int *xattr_credits,
+ struct ocfs2_alloc_context **xattr_ac)
+{
+ int ret = 0;
+ struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+ int s_size = 0, a_size = 0, acl_len = 0, new_clusters;
+
+ if (si->enable)
+ s_size = ocfs2_xattr_entry_real_size(strlen(si->name),
+ si->value_len);
+
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
+ acl_len = ocfs2_xattr_get_nolock(dir, dir_bh,
+ OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
+ "", NULL, 0);
+ if (acl_len > 0) {
+ a_size = ocfs2_xattr_entry_real_size(0, acl_len);
+ if (S_ISDIR(mode))
+ a_size <<= 1;
+ } else if (acl_len != 0 && acl_len != -ENODATA) {
+ mlog_errno(ret);
+ return ret;
+ }
+ }
+
+ if (!(s_size + a_size))
+ return ret;
+
+ /*
+ * The max space of security xattr taken inline is
+ * 256(name) + 80(value) + 16(entry) = 352 bytes,
+ * The max space of acl xattr taken inline is
+ * 80(value) + 16(entry) * 2(if directory) = 192 bytes,
+ * when blocksize = 512, may reserve one more cluser for
+ * xattr bucket, otherwise reserve one metadata block
+ * for them is ok.
+ */
+ if (dir->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE ||
+ (s_size + a_size) > OCFS2_XATTR_FREE_IN_IBODY) {
+ ret = ocfs2_reserve_new_metadata_blocks(osb, 1, xattr_ac);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+ *xattr_credits += OCFS2_XATTR_BLOCK_CREATE_CREDITS;
+ }
+
+ if (dir->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE &&
+ (s_size + a_size) > OCFS2_XATTR_FREE_IN_BLOCK(dir)) {
+ *want_clusters += 1;
+ *xattr_credits += ocfs2_blocks_per_xattr_bucket(dir->i_sb);
+ }
+
+ /*
+ * reserve credits and clusters for xattrs which has large value
+ * and have to be set outside
+ */
+ if (si->enable && si->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ new_clusters = ocfs2_clusters_for_bytes(dir->i_sb,
+ si->value_len);
+ *xattr_credits += ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL &&
+ acl_len > OCFS2_XATTR_INLINE_SIZE) {
+ /* for directory, it has DEFAULT and ACCESS two types of acls */
+ new_clusters = (S_ISDIR(mode) ? 2 : 1) *
+ ocfs2_clusters_for_bytes(dir->i_sb, acl_len);
+ *xattr_credits += ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+
+ return ret;
+}
+
static int ocfs2_xattr_extend_allocation(struct inode *inode,
u32 clusters_to_add,
- struct buffer_head *xattr_bh,
- struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_xattr_value_buf *vb,
struct ocfs2_xattr_set_ctxt *ctxt)
{
int status = 0;
handle_t *handle = ctxt->handle;
enum ocfs2_alloc_restarted why;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- u32 prev_clusters, logical_start = le32_to_cpu(xv->xr_clusters);
+ u32 prev_clusters, logical_start = le32_to_cpu(vb->vb_xv->xr_clusters);
struct ocfs2_extent_tree et;
mlog(0, "(clusters_to_add for xattr= %u)\n", clusters_to_add);
- ocfs2_init_xattr_value_extent_tree(&et, inode, xattr_bh, xv);
+ ocfs2_init_xattr_value_extent_tree(&et, inode, vb);
- status = ocfs2_journal_access(handle, inode, xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
}
- prev_clusters = le32_to_cpu(xv->xr_clusters);
+ prev_clusters = le32_to_cpu(vb->vb_xv->xr_clusters);
status = ocfs2_add_clusters_in_btree(osb,
inode,
&logical_start,
goto leave;
}
- status = ocfs2_journal_dirty(handle, xattr_bh);
+ status = ocfs2_journal_dirty(handle, vb->vb_bh);
if (status < 0) {
mlog_errno(status);
goto leave;
}
- clusters_to_add -= le32_to_cpu(xv->xr_clusters) - prev_clusters;
+ clusters_to_add -= le32_to_cpu(vb->vb_xv->xr_clusters) - prev_clusters;
/*
* We should have already allocated enough space before the transaction,
}
static int __ocfs2_remove_xattr_range(struct inode *inode,
- struct buffer_head *root_bh,
- struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_xattr_value_buf *vb,
u32 cpos, u32 phys_cpos, u32 len,
struct ocfs2_xattr_set_ctxt *ctxt)
{
handle_t *handle = ctxt->handle;
struct ocfs2_extent_tree et;
- ocfs2_init_xattr_value_extent_tree(&et, inode, root_bh, xv);
+ ocfs2_init_xattr_value_extent_tree(&et, inode, vb);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
goto out;
}
- le32_add_cpu(&xv->xr_clusters, -len);
+ le32_add_cpu(&vb->vb_xv->xr_clusters, -len);
- ret = ocfs2_journal_dirty(handle, root_bh);
+ ret = ocfs2_journal_dirty(handle, vb->vb_bh);
if (ret) {
mlog_errno(ret);
goto out;
static int ocfs2_xattr_shrink_size(struct inode *inode,
u32 old_clusters,
u32 new_clusters,
- struct buffer_head *root_bh,
- struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_xattr_value_buf *vb,
struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret = 0;
trunc_len = old_clusters - new_clusters;
while (trunc_len) {
ret = ocfs2_xattr_get_clusters(inode, cpos, &phys_cpos,
- &alloc_size, &xv->xr_list);
+ &alloc_size,
+ &vb->vb_xv->xr_list);
if (ret) {
mlog_errno(ret);
goto out;
if (alloc_size > trunc_len)
alloc_size = trunc_len;
- ret = __ocfs2_remove_xattr_range(inode, root_bh, xv, cpos,
+ ret = __ocfs2_remove_xattr_range(inode, vb, cpos,
phys_cpos, alloc_size,
ctxt);
if (ret) {
}
static int ocfs2_xattr_value_truncate(struct inode *inode,
- struct buffer_head *root_bh,
- struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_xattr_value_buf *vb,
int len,
struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret;
u32 new_clusters = ocfs2_clusters_for_bytes(inode->i_sb, len);
- u32 old_clusters = le32_to_cpu(xv->xr_clusters);
+ u32 old_clusters = le32_to_cpu(vb->vb_xv->xr_clusters);
if (new_clusters == old_clusters)
return 0;
if (new_clusters > old_clusters)
ret = ocfs2_xattr_extend_allocation(inode,
new_clusters - old_clusters,
- root_bh, xv, ctxt);
+ vb, ctxt);
else
ret = ocfs2_xattr_shrink_size(inode,
old_clusters, new_clusters,
- root_bh, xv, ctxt);
+ vb, ctxt);
return ret;
}
if (!di->i_xattr_loc)
return ret;
- ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
+ ret = ocfs2_read_xattr_block(inode, le64_to_cpu(di->i_xattr_loc),
+ &blk_bh);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
- if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
- ret = -EIO;
- goto cleanup;
- }
-
if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {
struct ocfs2_xattr_header *header = &xb->xb_attrs.xb_header;
ret = ocfs2_xattr_list_entries(inode, header,
ret = ocfs2_xattr_tree_list_index_block(inode, xt,
buffer, buffer_size);
}
-cleanup:
+
brelse(blk_bh);
return ret;
blkno = ocfs2_clusters_to_blocks(inode->i_sb, p_cluster);
/* Copy ocfs2_xattr_value */
for (i = 0; i < num_clusters * bpc; i++, blkno++) {
- ret = ocfs2_read_block(inode, blkno, &bh);
+ ret = ocfs2_read_block(inode, blkno, &bh, NULL);
if (ret) {
mlog_errno(ret);
goto out;
return ret;
}
-/* ocfs2_xattr_get()
- *
- * Copy an extended attribute into the buffer provided.
- * Buffer is NULL to compute the size of buffer required.
- */
-static int ocfs2_xattr_get(struct inode *inode,
+int ocfs2_xattr_get_nolock(struct inode *inode,
+ struct buffer_head *di_bh,
int name_index,
const char *name,
void *buffer,
{
int ret;
struct ocfs2_dinode *di = NULL;
- struct buffer_head *di_bh = NULL;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_xattr_search xis = {
.not_found = -ENODATA,
if (!(oi->ip_dyn_features & OCFS2_HAS_XATTR_FL))
ret = -ENODATA;
- ret = ocfs2_inode_lock(inode, &di_bh, 0);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
- }
xis.inode_bh = xbs.inode_bh = di_bh;
di = (struct ocfs2_dinode *)di_bh->b_data;
ret = ocfs2_xattr_block_get(inode, name_index, name, buffer,
buffer_size, &xbs);
up_read(&oi->ip_xattr_sem);
+
+ return ret;
+}
+
+/* ocfs2_xattr_get()
+ *
+ * Copy an extended attribute into the buffer provided.
+ * Buffer is NULL to compute the size of buffer required.
+ */
+static int ocfs2_xattr_get(struct inode *inode,
+ int name_index,
+ const char *name,
+ void *buffer,
+ size_t buffer_size)
+{
+ int ret;
+ struct buffer_head *di_bh = NULL;
+
+ ret = ocfs2_inode_lock(inode, &di_bh, 0);
+ if (ret < 0) {
+ mlog_errno(ret);
+ return ret;
+ }
+ ret = ocfs2_xattr_get_nolock(inode, di_bh, name_index,
+ name, buffer, buffer_size);
+
ocfs2_inode_unlock(inode, 0);
brelse(di_bh);
const void *value,
int value_len)
{
- int ret = 0, i, cp_len, credits;
+ int ret = 0, i, cp_len;
u16 blocksize = inode->i_sb->s_blocksize;
u32 p_cluster, num_clusters;
u32 cpos = 0, bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
BUG_ON(clusters > le32_to_cpu(xv->xr_clusters));
- /*
- * In __ocfs2_xattr_set_value_outside has already been dirtied,
- * so we don't need to worry about whether ocfs2_extend_trans
- * will create a new transactio for us or not.
- */
- credits = clusters * bpc;
- ret = ocfs2_extend_trans(handle, credits);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
while (cpos < clusters) {
ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
&num_clusters, &xv->xr_list);
blkno = ocfs2_clusters_to_blocks(inode->i_sb, p_cluster);
for (i = 0; i < num_clusters * bpc; i++, blkno++) {
- ret = ocfs2_read_block(inode, blkno, &bh);
+ ret = ocfs2_read_block(inode, blkno, &bh, NULL);
if (ret) {
mlog_errno(ret);
goto out;
handle_t *handle,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_value_buf *vb,
size_t offs)
{
int ret = 0;
void *val = xs->base + offs;
size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
- ret = ocfs2_journal_access(handle, inode, xs->xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
memset((void *)xs->here, 0, sizeof(struct ocfs2_xattr_entry));
memset(val, 0, size);
- ret = ocfs2_journal_dirty(handle, xs->xattr_bh);
+ ret = ocfs2_journal_dirty(handle, vb->vb_bh);
if (ret < 0)
mlog_errno(ret);
out:
handle_t *handle,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_value_buf *vb,
size_t offs)
{
int ret;
- ret = ocfs2_journal_access(handle, inode, xs->xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
ocfs2_xattr_set_local(xs->here, 0);
ocfs2_xattr_hash_entry(inode, xs->header, xs->here);
- ret = ocfs2_journal_dirty(handle, xs->xattr_bh);
+ ret = ocfs2_journal_dirty(handle, vb->vb_bh);
if (ret < 0)
mlog_errno(ret);
out:
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
struct ocfs2_xattr_set_ctxt *ctxt,
+ struct ocfs2_xattr_value_buf *vb,
size_t offs)
{
size_t name_len = strlen(xi->name);
xv->xr_list.l_tree_depth = 0;
xv->xr_list.l_count = cpu_to_le16(1);
xv->xr_list.l_next_free_rec = 0;
+ vb->vb_xv = xv;
- ret = ocfs2_xattr_value_truncate(inode, xs->xattr_bh, xv,
- xi->value_len, ctxt);
+ ret = ocfs2_xattr_value_truncate(inode, vb, xi->value_len, ctxt);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
- ret = ocfs2_xattr_update_entry(inode, ctxt->handle, xi, xs, offs);
+ ret = ocfs2_xattr_update_entry(inode, ctxt->handle, xi, xs, vb, offs);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
- ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, xv,
+ ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, vb->vb_xv,
xi->value, xi->value_len);
if (ret < 0)
mlog_errno(ret);
.value = xi->value,
.value_len = xi->value_len,
};
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = xs->xattr_bh,
+ .vb_access = ocfs2_journal_access_di,
+ };
+
+ if (!(flag & OCFS2_INLINE_XATTR_FL)) {
+ BUG_ON(xs->xattr_bh == xs->inode_bh);
+ vb.vb_access = ocfs2_journal_access_xb;
+ } else
+ BUG_ON(xs->xattr_bh != xs->inode_bh);
/* Compute min_offs, last and free space. */
last = xs->header->xh_entries;
last += 1;
}
- free = min_offs - ((void *)last - xs->base) - sizeof(__u32);
+ free = min_offs - ((void *)last - xs->base) - OCFS2_XATTR_HEADER_GAP;
if (free < 0)
return -EIO;
if (ocfs2_xattr_is_local(xs->here) && size == size_l) {
/* Replace existing local xattr with tree root */
ret = ocfs2_xattr_set_value_outside(inode, xi, xs,
- ctxt, offs);
+ ctxt, &vb, offs);
if (ret < 0)
mlog_errno(ret);
goto out;
} else if (!ocfs2_xattr_is_local(xs->here)) {
/* For existing xattr which has value outside */
- struct ocfs2_xattr_value_root *xv = NULL;
- xv = (struct ocfs2_xattr_value_root *)(val +
- OCFS2_XATTR_SIZE(name_len));
+ vb.vb_xv = (struct ocfs2_xattr_value_root *)
+ (val + OCFS2_XATTR_SIZE(name_len));
if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
/*
* then set new value with set_value_outside().
*/
ret = ocfs2_xattr_value_truncate(inode,
- xs->xattr_bh,
- xv,
+ &vb,
xi->value_len,
ctxt);
if (ret < 0) {
handle,
xi,
xs,
+ &vb,
offs);
if (ret < 0) {
mlog_errno(ret);
ret = __ocfs2_xattr_set_value_outside(inode,
handle,
- xv,
+ vb.vb_xv,
xi->value,
xi->value_len);
if (ret < 0)
* just trucate old value to zero.
*/
ret = ocfs2_xattr_value_truncate(inode,
- xs->xattr_bh,
- xv,
+ &vb,
0,
ctxt);
if (ret < 0)
}
}
- ret = ocfs2_journal_access(handle, inode, xs->inode_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, xs->inode_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
if (!(flag & OCFS2_INLINE_XATTR_FL)) {
- ret = ocfs2_journal_access(handle, inode, xs->xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = vb.vb_access(handle, inode, vb.vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
oi->ip_dyn_features |= flag;
di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
spin_unlock(&oi->ip_lock);
- /* Update inode ctime */
- inode->i_ctime = CURRENT_TIME;
- di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
- di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
ret = ocfs2_journal_dirty(handle, xs->inode_bh);
if (ret < 0)
* This is the second step for value size > INLINE_SIZE.
*/
size_t offs = le16_to_cpu(xs->here->xe_name_offset);
- ret = ocfs2_xattr_set_value_outside(inode, xi, xs, ctxt, offs);
+ ret = ocfs2_xattr_set_value_outside(inode, xi, xs, ctxt,
+ &vb, offs);
if (ret < 0) {
int ret2;
* the junk tree root we have already set in local.
*/
ret2 = ocfs2_xattr_cleanup(inode, ctxt->handle,
- xi, xs, offs);
+ xi, xs, &vb, offs);
if (ret2 < 0)
mlog_errno(ret2);
}
}
static int ocfs2_remove_value_outside(struct inode*inode,
- struct buffer_head *bh,
+ struct ocfs2_xattr_value_buf *vb,
struct ocfs2_xattr_header *header)
{
int ret = 0, i;
ocfs2_init_dealloc_ctxt(&ctxt.dealloc);
- ctxt.handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
+ ctxt.handle = ocfs2_start_trans(osb,
+ ocfs2_remove_extent_credits(osb->sb));
if (IS_ERR(ctxt.handle)) {
ret = PTR_ERR(ctxt.handle);
mlog_errno(ret);
struct ocfs2_xattr_entry *entry = &header->xh_entries[i];
if (!ocfs2_xattr_is_local(entry)) {
- struct ocfs2_xattr_value_root *xv;
void *val;
val = (void *)header +
le16_to_cpu(entry->xe_name_offset);
- xv = (struct ocfs2_xattr_value_root *)
+ vb->vb_xv = (struct ocfs2_xattr_value_root *)
(val + OCFS2_XATTR_SIZE(entry->xe_name_len));
- ret = ocfs2_xattr_value_truncate(inode, bh, xv,
- 0, &ctxt);
+ ret = ocfs2_xattr_value_truncate(inode, vb, 0, &ctxt);
if (ret < 0) {
mlog_errno(ret);
break;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct ocfs2_xattr_header *header;
int ret;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = di_bh,
+ .vb_access = ocfs2_journal_access_di,
+ };
header = (struct ocfs2_xattr_header *)
((void *)di + inode->i_sb->s_blocksize -
le16_to_cpu(di->i_xattr_inline_size));
- ret = ocfs2_remove_value_outside(inode, di_bh, header);
+ ret = ocfs2_remove_value_outside(inode, &vb, header);
return ret;
}
{
struct ocfs2_xattr_block *xb;
int ret = 0;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = blk_bh,
+ .vb_access = ocfs2_journal_access_xb,
+ };
xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {
struct ocfs2_xattr_header *header = &(xb->xb_attrs.xb_header);
- ret = ocfs2_remove_value_outside(inode, blk_bh, header);
+ ret = ocfs2_remove_value_outside(inode, &vb, header);
} else
ret = ocfs2_delete_xattr_index_block(inode, blk_bh);
u64 blk, bg_blkno;
u16 bit;
- ret = ocfs2_read_block(inode, block, &blk_bh);
+ ret = ocfs2_read_xattr_block(inode, block, &blk_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
- xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
- if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
- ret = -EIO;
- goto out;
- }
-
ret = ocfs2_xattr_block_remove(inode, blk_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
+ xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
blk = le64_to_cpu(xb->xb_blkno);
bit = le16_to_cpu(xb->xb_suballoc_bit);
bg_blkno = ocfs2_which_suballoc_group(blk, bit);
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
if (!di->i_xattr_loc)
return ret;
- ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
+ ret = ocfs2_read_xattr_block(inode, le64_to_cpu(di->i_xattr_loc),
+ &blk_bh);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
- xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
- if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
- ret = -EIO;
- goto cleanup;
- }
-
xs->xattr_bh = blk_bh;
+ xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {
xs->header = &xb->xb_attrs.xb_header;
int ret;
if (!xs->xattr_bh) {
- ret = ocfs2_journal_access(handle, inode, xs->inode_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_di(handle, inode, xs->inode_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret < 0) {
mlog_errno(ret);
goto end;
new_bh = sb_getblk(inode->i_sb, first_blkno);
ocfs2_set_new_buffer_uptodate(inode, new_bh);
- ret = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_xb(handle, inode, new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret < 0) {
mlog_errno(ret);
goto end;
last += 1;
}
- free = min_offs - ((void *)last - xs->base) - sizeof(__u32);
+ free = min_offs - ((void *)last - xs->base) - OCFS2_XATTR_HEADER_GAP;
if (free < 0)
return 0;
xi->value_len);
u64 value_size;
+ /*
+ * Calculate the clusters we need to write.
+ * No matter whether we replace an old one or add a new one,
+ * we need this for writing.
+ */
+ if (xi->value_len > OCFS2_XATTR_INLINE_SIZE)
+ credits += new_clusters *
+ ocfs2_clusters_to_blocks(inode->i_sb, 1);
+
if (xis->not_found && xbs->not_found) {
credits += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
base = xis->base;
credits += OCFS2_INODE_UPDATE_CREDITS;
} else {
- int i, block_off;
+ int i, block_off = 0;
xb = (struct ocfs2_xattr_block *)xbs->xattr_bh->b_data;
xe = xbs->here;
name_offset = le16_to_cpu(xe->xe_name_offset);
*/
if (!xi->value) {
if (!ocfs2_xattr_is_local(xe))
- credits += OCFS2_REMOVE_EXTENT_CREDITS;
+ credits += ocfs2_remove_extent_credits(inode->i_sb);
goto out;
}
*/
if (ocfs2_xattr_can_be_in_inode(inode, xi, xis)) {
clusters_add += new_clusters;
- credits += OCFS2_REMOVE_EXTENT_CREDITS +
+ credits += ocfs2_remove_extent_credits(inode->i_sb) +
OCFS2_INODE_UPDATE_CREDITS;
if (!ocfs2_xattr_is_local(xe))
credits += ocfs2_calc_extend_credits(
value_size);
xv = (struct ocfs2_xattr_value_root *)
(base + name_offset + name_len);
+ value_size = OCFS2_XATTR_ROOT_SIZE;
} else
xv = &def_xv.xv;
if (old_clusters >= new_clusters) {
- credits += OCFS2_REMOVE_EXTENT_CREDITS;
+ credits += ocfs2_remove_extent_credits(inode->i_sb);
goto out;
} else {
meta_add += ocfs2_extend_meta_needed(&xv->xr_list);
&xv->xr_list,
new_clusters -
old_clusters);
- goto out;
+ if (value_size >= OCFS2_XATTR_ROOT_SIZE)
+ goto out;
}
} else {
/*
/* calculate metadata allocation. */
if (di->i_xattr_loc) {
if (!xbs->xattr_bh) {
- ret = ocfs2_read_block(inode,
- le64_to_cpu(di->i_xattr_loc),
- &bh);
+ ret = ocfs2_read_xattr_block(inode,
+ le64_to_cpu(di->i_xattr_loc),
+ &bh);
if (ret) {
mlog_errno(ret);
goto out;
} else
xb = (struct ocfs2_xattr_block *)xbs->xattr_bh->b_data;
+ /*
+ * If there is already an xattr tree, good, we can calculate
+ * like other b-trees. Otherwise we may have the chance of
+ * create a tree, the credit calculation is borrowed from
+ * ocfs2_calc_extend_credits with root_el = NULL. And the
+ * new tree will be cluster based, so no meta is needed.
+ */
if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED) {
struct ocfs2_extent_list *el =
&xb->xb_attrs.xb_root.xt_list;
meta_add += ocfs2_extend_meta_needed(el);
credits += ocfs2_calc_extend_credits(inode->i_sb,
el, 1);
- }
+ } else
+ credits += OCFS2_SUBALLOC_ALLOC + 1;
/*
* This cluster will be used either for new bucket or for
struct ocfs2_xattr_search *xbs,
struct ocfs2_xattr_set_ctxt *ctxt)
{
- int ret = 0, credits;
+ int ret = 0, credits, old_found;
if (!xi->value) {
/* Remove existing extended attribute */
xi->value = NULL;
xi->value_len = 0;
+ old_found = xis->not_found;
xis->not_found = -ENODATA;
ret = ocfs2_calc_xattr_set_need(inode,
di,
NULL,
NULL,
&credits);
+ xis->not_found = old_found;
if (ret) {
mlog_errno(ret);
goto out;
if (ret)
goto out;
+ old_found = xis->not_found;
xis->not_found = -ENODATA;
ret = ocfs2_calc_xattr_set_need(inode,
di,
NULL,
NULL,
&credits);
+ xis->not_found = old_found;
if (ret) {
mlog_errno(ret);
goto out;
}
}
+ if (!ret) {
+ /* Update inode ctime. */
+ ret = ocfs2_journal_access_di(ctxt->handle, inode,
+ xis->inode_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ inode->i_ctime = CURRENT_TIME;
+ di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
+ di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
+ ocfs2_journal_dirty(ctxt->handle, xis->inode_bh);
+ }
out:
return ret;
}
/*
+ * This function only called duing creating inode
+ * for init security/acl xattrs of the new inode.
+ * All transanction credits have been reserved in mknod.
+ */
+int ocfs2_xattr_set_handle(handle_t *handle,
+ struct inode *inode,
+ struct buffer_head *di_bh,
+ int name_index,
+ const char *name,
+ const void *value,
+ size_t value_len,
+ int flags,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac)
+{
+ struct ocfs2_dinode *di;
+ int ret;
+
+ struct ocfs2_xattr_info xi = {
+ .name_index = name_index,
+ .name = name,
+ .value = value,
+ .value_len = value_len,
+ };
+
+ struct ocfs2_xattr_search xis = {
+ .not_found = -ENODATA,
+ };
+
+ struct ocfs2_xattr_search xbs = {
+ .not_found = -ENODATA,
+ };
+
+ struct ocfs2_xattr_set_ctxt ctxt = {
+ .handle = handle,
+ .meta_ac = meta_ac,
+ .data_ac = data_ac,
+ };
+
+ if (!ocfs2_supports_xattr(OCFS2_SB(inode->i_sb)))
+ return -EOPNOTSUPP;
+
+ /*
+ * In extreme situation, may need xattr bucket when
+ * block size is too small. And we have already reserved
+ * the credits for bucket in mknod.
+ */
+ if (inode->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE) {
+ xbs.bucket = ocfs2_xattr_bucket_new(inode);
+ if (!xbs.bucket) {
+ mlog_errno(-ENOMEM);
+ return -ENOMEM;
+ }
+ }
+
+ xis.inode_bh = xbs.inode_bh = di_bh;
+ di = (struct ocfs2_dinode *)di_bh->b_data;
+
+ down_write(&OCFS2_I(inode)->ip_xattr_sem);
+
+ ret = ocfs2_xattr_ibody_find(inode, name_index, name, &xis);
+ if (ret)
+ goto cleanup;
+ if (xis.not_found) {
+ ret = ocfs2_xattr_block_find(inode, name_index, name, &xbs);
+ if (ret)
+ goto cleanup;
+ }
+
+ ret = __ocfs2_xattr_set_handle(inode, di, &xi, &xis, &xbs, &ctxt);
+
+cleanup:
+ up_write(&OCFS2_I(inode)->ip_xattr_sem);
+ brelse(xbs.xattr_bh);
+ ocfs2_xattr_bucket_free(xbs.bucket);
+
+ return ret;
+}
+
+/*
* ocfs2_xattr_set()
*
* Set, replace or remove an extended attribute for this inode.
goto cleanup;
}
+ /* we need to update inode's ctime field, so add credit for it. */
+ credits += OCFS2_INODE_UPDATE_CREDITS;
ctxt.handle = ocfs2_start_trans(osb, credits);
if (IS_ERR(ctxt.handle)) {
ret = PTR_ERR(ctxt.handle);
break;
}
+
xe_name = bucket_block(bucket, block_off) + new_offset;
if (!memcmp(name, xe_name, name_len)) {
*xe_index = i;
*/
down_write(&oi->ip_alloc_sem);
- ret = ocfs2_journal_access(handle, inode, xb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_xb(handle, inode, xb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
/*
- * Move half nums of the xattr bucket in the previous cluster to this new
- * cluster. We only touch the last cluster of the previous extend record.
+ * prev_blkno points to the start of an existing extent. new_blkno
+ * points to a newly allocated extent. Because we know each of our
+ * clusters contains more than bucket, we can easily split one cluster
+ * at a bucket boundary. So we take the last cluster of the existing
+ * extent and split it down the middle. We move the last half of the
+ * buckets in the last cluster of the existing extent over to the new
+ * extent.
+ *
+ * first_bh is the buffer at prev_blkno so we can update the existing
+ * extent's bucket count. header_bh is the bucket were we were hoping
+ * to insert our xattr. If the bucket move places the target in the new
+ * extent, we'll update first_bh and header_bh after modifying the old
+ * extent.
*
- * first_bh is the first buffer_head of a series of bucket in the same
- * extent rec and header_bh is the header of one bucket in this cluster.
- * They will be updated if we move the data header_bh contains to the new
- * cluster. first_hash will be set as the 1st xe's name_hash of the new cluster.
+ * first_hash will be set as the 1st xe's name_hash in the new extent.
*/
static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,
handle_t *handle,
- struct buffer_head **first_bh,
- struct buffer_head **header_bh,
+ struct ocfs2_xattr_bucket *first,
+ struct ocfs2_xattr_bucket *target,
u64 new_blkno,
- u64 prev_blkno,
u32 num_clusters,
u32 *first_hash)
{
- int i, ret, credits;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
- int num_buckets = ocfs2_xattr_buckets_per_cluster(osb);
- int blocksize = inode->i_sb->s_blocksize;
- struct buffer_head *old_bh, *new_bh, *prev_bh, *new_first_bh = NULL;
- struct ocfs2_xattr_header *new_xh;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)((*first_bh)->b_data);
-
- BUG_ON(le16_to_cpu(xh->xh_num_buckets) < num_buckets);
- BUG_ON(OCFS2_XATTR_BUCKET_SIZE == osb->s_clustersize);
-
- prev_bh = *first_bh;
- get_bh(prev_bh);
- xh = (struct ocfs2_xattr_header *)prev_bh->b_data;
+ int ret;
+ struct super_block *sb = inode->i_sb;
+ int blks_per_bucket = ocfs2_blocks_per_xattr_bucket(sb);
+ int num_buckets = ocfs2_xattr_buckets_per_cluster(OCFS2_SB(sb));
+ int to_move = num_buckets / 2;
+ u64 src_blkno;
+ u64 last_cluster_blkno = bucket_blkno(first) +
+ ((num_clusters - 1) * ocfs2_clusters_to_blocks(sb, 1));
- prev_blkno += (num_clusters - 1) * bpc + bpc / 2;
+ BUG_ON(le16_to_cpu(bucket_xh(first)->xh_num_buckets) < num_buckets);
+ BUG_ON(OCFS2_XATTR_BUCKET_SIZE == OCFS2_SB(sb)->s_clustersize);
mlog(0, "move half of xattrs in cluster %llu to %llu\n",
- (unsigned long long)prev_blkno, (unsigned long long)new_blkno);
+ (unsigned long long)last_cluster_blkno, (unsigned long long)new_blkno);
- /*
- * We need to update the 1st half of the new cluster and
- * 1 more for the update of the 1st bucket of the previous
- * extent record.
- */
- credits = bpc / 2 + 1 + handle->h_buffer_credits;
- ret = ocfs2_extend_trans(handle, credits);
+ ret = ocfs2_mv_xattr_buckets(inode, handle, bucket_blkno(first),
+ last_cluster_blkno, new_blkno,
+ to_move, first_hash);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, prev_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ /* This is the first bucket that got moved */
+ src_blkno = last_cluster_blkno + (to_move * blks_per_bucket);
- for (i = 0; i < bpc / 2; i++, prev_blkno++, new_blkno++) {
- old_bh = new_bh = NULL;
- new_bh = sb_getblk(inode->i_sb, new_blkno);
- if (!new_bh) {
- ret = -EIO;
- mlog_errno(ret);
- goto out;
- }
+ /*
+ * If the target bucket was part of the moved buckets, we need to
+ * update first and target.
+ */
+ if (bucket_blkno(target) >= src_blkno) {
+ /* Find the block for the new target bucket */
+ src_blkno = new_blkno +
+ (bucket_blkno(target) - src_blkno);
- ocfs2_set_new_buffer_uptodate(inode, new_bh);
+ ocfs2_xattr_bucket_relse(first);
+ ocfs2_xattr_bucket_relse(target);
- ret = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (ret < 0) {
+ /*
+ * These shouldn't fail - the buffers are in the
+ * journal from ocfs2_cp_xattr_bucket().
+ */
+ ret = ocfs2_read_xattr_bucket(first, new_blkno);
+ if (ret) {
mlog_errno(ret);
- brelse(new_bh);
goto out;
}
-
- ret = ocfs2_read_block(inode, prev_blkno, &old_bh);
- if (ret < 0) {
+ ret = ocfs2_read_xattr_bucket(target, src_blkno);
+ if (ret)
mlog_errno(ret);
- brelse(new_bh);
- goto out;
- }
-
- memcpy(new_bh->b_data, old_bh->b_data, blocksize);
-
- if (i == 0) {
- new_xh = (struct ocfs2_xattr_header *)new_bh->b_data;
- new_xh->xh_num_buckets = cpu_to_le16(num_buckets / 2);
-
- if (first_hash)
- *first_hash = le32_to_cpu(
- new_xh->xh_entries[0].xe_name_hash);
- new_first_bh = new_bh;
- get_bh(new_first_bh);
- }
- ocfs2_journal_dirty(handle, new_bh);
-
- if (*header_bh == old_bh) {
- brelse(*header_bh);
- *header_bh = new_bh;
- get_bh(*header_bh);
-
- brelse(*first_bh);
- *first_bh = new_first_bh;
- get_bh(*first_bh);
- }
- brelse(new_bh);
- brelse(old_bh);
}
- le16_add_cpu(&xh->xh_num_buckets, -(num_buckets / 2));
-
- ocfs2_journal_dirty(handle, prev_bh);
out:
- brelse(prev_bh);
- brelse(new_first_bh);
return ret;
}
goto out;
}
+ /*
+ * Hey, if we're overwriting t_bucket, what difference does
+ * ACCESS_CREATE vs ACCESS_WRITE make? See the comment in the
+ * same part of ocfs2_cp_xattr_bucket().
+ */
ret = ocfs2_xattr_bucket_journal_access(handle, t_bucket,
new_bucket_head ?
OCFS2_JOURNAL_ACCESS_CREATE :
mlog_errno(ret);
goto out;
}
-
+
ret = ocfs2_read_xattr_bucket(s_bucket, s_blkno);
if (ret)
goto out;
if (ret)
goto out;
+ /*
+ * Hey, if we're overwriting t_bucket, what difference does
+ * ACCESS_CREATE vs ACCESS_WRITE make? Well, if we allocated a new
+ * cluster to fill, we came here from
+ * ocfs2_mv_xattr_buckets(), and it is really new -
+ * ACCESS_CREATE is required. But we also might have moved data
+ * out of t_bucket before extending back into it.
+ * ocfs2_add_new_xattr_bucket() can do this - its call to
+ * ocfs2_add_new_xattr_cluster() may have created a new extent
+ * and copied out the end of the old extent. Then it re-extends
+ * the old extent back to create space for new xattrs. That's
+ * how we get here, and the bucket isn't really new.
+ */
ret = ocfs2_xattr_bucket_journal_access(handle, t_bucket,
t_is_new ?
OCFS2_JOURNAL_ACCESS_CREATE :
}
/*
- * Copy one xattr cluster from src_blk to to_blk.
- * The to_blk will become the first bucket header of the cluster, so its
- * xh_num_buckets will be initialized as the bucket num in the cluster.
+ * src_blk points to the start of an existing extent. last_blk points to
+ * last cluster in that extent. to_blk points to a newly allocated
+ * extent. We copy the buckets from the cluster at last_blk to the new
+ * extent. If start_bucket is non-zero, we skip that many buckets before
+ * we start copying. The new extent's xh_num_buckets gets set to the
+ * number of buckets we copied. The old extent's xh_num_buckets shrinks
+ * by the same amount.
*/
-static int ocfs2_cp_xattr_cluster(struct inode *inode,
- handle_t *handle,
- struct buffer_head *first_bh,
- u64 src_blk,
- u64 to_blk,
+static int ocfs2_mv_xattr_buckets(struct inode *inode, handle_t *handle,
+ u64 src_blk, u64 last_blk, u64 to_blk,
+ unsigned int start_bucket,
u32 *first_hash)
{
int i, ret, credits;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
+ int blks_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
int num_buckets = ocfs2_xattr_buckets_per_cluster(osb);
- struct buffer_head *bh = NULL;
- struct ocfs2_xattr_header *xh;
- u64 to_blk_start = to_blk;
+ struct ocfs2_xattr_bucket *old_first, *new_first;
+
+ mlog(0, "mv xattrs from cluster %llu to %llu\n",
+ (unsigned long long)last_blk, (unsigned long long)to_blk);
+
+ BUG_ON(start_bucket >= num_buckets);
+ if (start_bucket) {
+ num_buckets -= start_bucket;
+ last_blk += (start_bucket * blks_per_bucket);
+ }
- mlog(0, "cp xattrs from cluster %llu to %llu\n",
- (unsigned long long)src_blk, (unsigned long long)to_blk);
+ /* The first bucket of the original extent */
+ old_first = ocfs2_xattr_bucket_new(inode);
+ /* The first bucket of the new extent */
+ new_first = ocfs2_xattr_bucket_new(inode);
+ if (!old_first || !new_first) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_read_xattr_bucket(old_first, src_blk);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
/*
- * We need to update the new cluster and 1 more for the update of
- * the 1st bucket of the previous extent rec.
+ * We need to update the first bucket of the old extent and all
+ * the buckets going to the new extent.
*/
- credits = bpc + 1 + handle->h_buffer_credits;
+ credits = ((num_buckets + 1) * blks_per_bucket) +
+ handle->h_buffer_credits;
ret = ocfs2_extend_trans(handle, credits);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, first_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, old_first,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
for (i = 0; i < num_buckets; i++) {
ret = ocfs2_cp_xattr_bucket(inode, handle,
- src_blk, to_blk, 1);
+ last_blk + (i * blks_per_bucket),
+ to_blk + (i * blks_per_bucket),
+ 1);
if (ret) {
mlog_errno(ret);
goto out;
}
-
- src_blk += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- to_blk += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
}
- /* update the old bucket header. */
- xh = (struct ocfs2_xattr_header *)first_bh->b_data;
- le16_add_cpu(&xh->xh_num_buckets, -num_buckets);
-
- ocfs2_journal_dirty(handle, first_bh);
-
- /* update the new bucket header. */
- ret = ocfs2_read_block(inode, to_blk_start, &bh);
- if (ret < 0) {
+ /*
+ * Get the new bucket ready before we dirty anything
+ * (This actually shouldn't fail, because we already dirtied
+ * it once in ocfs2_cp_xattr_bucket()).
+ */
+ ret = ocfs2_read_xattr_bucket(new_first, to_blk);
+ if (ret) {
mlog_errno(ret);
goto out;
}
-
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, new_first,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
- xh = (struct ocfs2_xattr_header *)bh->b_data;
- xh->xh_num_buckets = cpu_to_le16(num_buckets);
+ /* Now update the headers */
+ le16_add_cpu(&bucket_xh(old_first)->xh_num_buckets, -num_buckets);
+ ocfs2_xattr_bucket_journal_dirty(handle, old_first);
- ocfs2_journal_dirty(handle, bh);
+ bucket_xh(new_first)->xh_num_buckets = cpu_to_le16(num_buckets);
+ ocfs2_xattr_bucket_journal_dirty(handle, new_first);
if (first_hash)
- *first_hash = le32_to_cpu(xh->xh_entries[0].xe_name_hash);
+ *first_hash = le32_to_cpu(bucket_xh(new_first)->xh_entries[0].xe_name_hash);
+
out:
- brelse(bh);
+ ocfs2_xattr_bucket_free(new_first);
+ ocfs2_xattr_bucket_free(old_first);
return ret;
}
*/
static int ocfs2_adjust_xattr_cross_cluster(struct inode *inode,
handle_t *handle,
- struct buffer_head **first_bh,
- struct buffer_head **header_bh,
+ struct ocfs2_xattr_bucket *first,
+ struct ocfs2_xattr_bucket *target,
u64 new_blk,
- u64 prev_blk,
u32 prev_clusters,
u32 *v_start,
int *extend)
{
- int ret = 0;
- int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
+ int ret;
mlog(0, "adjust xattrs from cluster %llu len %u to %llu\n",
- (unsigned long long)prev_blk, prev_clusters,
+ (unsigned long long)bucket_blkno(first), prev_clusters,
(unsigned long long)new_blk);
- if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1)
+ if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1) {
ret = ocfs2_mv_xattr_bucket_cross_cluster(inode,
handle,
- first_bh,
- header_bh,
+ first, target,
new_blk,
- prev_blk,
prev_clusters,
v_start);
- else {
- u64 last_blk = prev_blk + bpc * (prev_clusters - 1);
-
- if (prev_clusters > 1 && (*header_bh)->b_blocknr != last_blk)
- ret = ocfs2_cp_xattr_cluster(inode, handle, *first_bh,
- last_blk, new_blk,
+ if (ret)
+ mlog_errno(ret);
+ } else {
+ /* The start of the last cluster in the first extent */
+ u64 last_blk = bucket_blkno(first) +
+ ((prev_clusters - 1) *
+ ocfs2_clusters_to_blocks(inode->i_sb, 1));
+
+ if (prev_clusters > 1 && bucket_blkno(target) != last_blk) {
+ ret = ocfs2_mv_xattr_buckets(inode, handle,
+ bucket_blkno(first),
+ last_blk, new_blk, 0,
v_start);
- else {
+ if (ret)
+ mlog_errno(ret);
+ } else {
ret = ocfs2_divide_xattr_cluster(inode, handle,
last_blk, new_blk,
v_start);
+ if (ret)
+ mlog_errno(ret);
- if ((*header_bh)->b_blocknr == last_blk && extend)
+ if ((bucket_blkno(target) == last_blk) && extend)
*extend = 0;
}
}
*/
static int ocfs2_add_new_xattr_cluster(struct inode *inode,
struct buffer_head *root_bh,
- struct buffer_head **first_bh,
- struct buffer_head **header_bh,
+ struct ocfs2_xattr_bucket *first,
+ struct ocfs2_xattr_bucket *target,
u32 *num_clusters,
u32 prev_cpos,
- u64 prev_blkno,
int *extend,
struct ocfs2_xattr_set_ctxt *ctxt)
{
mlog(0, "Add new xattr cluster for %llu, previous xattr hash = %u, "
"previous xattr blkno = %llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
- prev_cpos, (unsigned long long)prev_blkno);
+ prev_cpos, (unsigned long long)bucket_blkno(first));
ocfs2_init_xattr_tree_extent_tree(&et, inode, root_bh);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_xb(handle, inode, root_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto leave;
mlog(0, "Allocating %u clusters at block %u for xattr in inode %llu\n",
num_bits, bit_off, (unsigned long long)OCFS2_I(inode)->ip_blkno);
- if (prev_blkno + prev_clusters * bpc == block &&
+ if (bucket_blkno(first) + (prev_clusters * bpc) == block &&
(prev_clusters + num_bits) << osb->s_clustersize_bits <=
OCFS2_MAX_XATTR_TREE_LEAF_SIZE) {
/*
} else {
ret = ocfs2_adjust_xattr_cross_cluster(inode,
handle,
- first_bh,
- header_bh,
+ first,
+ target,
block,
- prev_blkno,
prev_clusters,
&v_start,
extend);
}
/*
- * Extend a new xattr bucket and move xattrs to the end one by one until
- * We meet with start_bh. Only move half of the xattrs to the bucket after it.
+ * We are given an extent. 'first' is the bucket at the very front of
+ * the extent. The extent has space for an additional bucket past
+ * bucket_xh(first)->xh_num_buckets. 'target_blkno' is the block number
+ * of the target bucket. We wish to shift every bucket past the target
+ * down one, filling in that additional space. When we get back to the
+ * target, we split the target between itself and the now-empty bucket
+ * at target+1 (aka, target_blkno + blks_per_bucket).
*/
static int ocfs2_extend_xattr_bucket(struct inode *inode,
handle_t *handle,
- struct buffer_head *first_bh,
- struct buffer_head *start_bh,
+ struct ocfs2_xattr_bucket *first,
+ u64 target_blk,
u32 num_clusters)
{
int ret, credits;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- u64 start_blk = start_bh->b_blocknr, end_blk;
- u32 num_buckets = num_clusters * ocfs2_xattr_buckets_per_cluster(osb);
- struct ocfs2_xattr_header *first_xh =
- (struct ocfs2_xattr_header *)first_bh->b_data;
- u16 bucket = le16_to_cpu(first_xh->xh_num_buckets);
+ u64 end_blk;
+ u16 new_bucket = le16_to_cpu(bucket_xh(first)->xh_num_buckets);
mlog(0, "extend xattr bucket in %llu, xattr extend rec starting "
- "from %llu, len = %u\n", (unsigned long long)start_blk,
- (unsigned long long)first_bh->b_blocknr, num_clusters);
+ "from %llu, len = %u\n", (unsigned long long)target_blk,
+ (unsigned long long)bucket_blkno(first), num_clusters);
- BUG_ON(bucket >= num_buckets);
+ /* The extent must have room for an additional bucket */
+ BUG_ON(new_bucket >=
+ (num_clusters * ocfs2_xattr_buckets_per_cluster(osb)));
- end_blk = first_bh->b_blocknr + (bucket - 1) * blk_per_bucket;
+ /* end_blk points to the last existing bucket */
+ end_blk = bucket_blkno(first) + ((new_bucket - 1) * blk_per_bucket);
/*
- * We will touch all the buckets after the start_bh(include it).
- * Then we add one more bucket.
+ * end_blk is the start of the last existing bucket.
+ * Thus, (end_blk - target_blk) covers the target bucket and
+ * every bucket after it up to, but not including, the last
+ * existing bucket. Then we add the last existing bucket, the
+ * new bucket, and the first bucket (3 * blk_per_bucket).
*/
- credits = end_blk - start_blk + 3 * blk_per_bucket + 1 +
+ credits = (end_blk - target_blk) + (3 * blk_per_bucket) +
handle->h_buffer_credits;
ret = ocfs2_extend_trans(handle, credits);
if (ret) {
goto out;
}
- ret = ocfs2_journal_access(handle, inode, first_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, first,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
- while (end_blk != start_blk) {
+ while (end_blk != target_blk) {
ret = ocfs2_cp_xattr_bucket(inode, handle, end_blk,
end_blk + blk_per_bucket, 0);
if (ret)
end_blk -= blk_per_bucket;
}
- /* Move half of the xattr in start_blk to the next bucket. */
- ret = ocfs2_divide_xattr_bucket(inode, handle, start_blk,
- start_blk + blk_per_bucket, NULL, 0);
+ /* Move half of the xattr in target_blkno to the next bucket. */
+ ret = ocfs2_divide_xattr_bucket(inode, handle, target_blk,
+ target_blk + blk_per_bucket, NULL, 0);
- le16_add_cpu(&first_xh->xh_num_buckets, 1);
- ocfs2_journal_dirty(handle, first_bh);
+ le16_add_cpu(&bucket_xh(first)->xh_num_buckets, 1);
+ ocfs2_xattr_bucket_journal_dirty(handle, first);
out:
return ret;
}
/*
- * Add new xattr bucket in an extent record and adjust the buckets accordingly.
- * xb_bh is the ocfs2_xattr_block.
- * We will move all the buckets starting from header_bh to the next place. As
- * for this one, half num of its xattrs will be moved to the next one.
+ * Add new xattr bucket in an extent record and adjust the buckets
+ * accordingly. xb_bh is the ocfs2_xattr_block, and target is the
+ * bucket we want to insert into.
*
- * We will allocate a new cluster if current cluster is full and adjust
- * header_bh and first_bh if the insert place is moved to the new cluster.
+ * In the easy case, we will move all the buckets after target down by
+ * one. Half of target's xattrs will be moved to the next bucket.
+ *
+ * If current cluster is full, we'll allocate a new one. This may not
+ * be contiguous. The underlying calls will make sure that there is
+ * space for the insert, shifting buckets around if necessary.
+ * 'target' may be moved by those calls.
*/
static int ocfs2_add_new_xattr_bucket(struct inode *inode,
struct buffer_head *xb_bh,
- struct buffer_head *header_bh,
+ struct ocfs2_xattr_bucket *target,
struct ocfs2_xattr_set_ctxt *ctxt)
{
- struct ocfs2_xattr_header *first_xh = NULL;
- struct buffer_head *first_bh = NULL;
struct ocfs2_xattr_block *xb =
(struct ocfs2_xattr_block *)xb_bh->b_data;
struct ocfs2_xattr_tree_root *xb_root = &xb->xb_attrs.xb_root;
struct ocfs2_extent_list *el = &xb_root->xt_list;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)header_bh->b_data;
- u32 name_hash = le32_to_cpu(xh->xh_entries[0].xe_name_hash);
- struct super_block *sb = inode->i_sb;
- struct ocfs2_super *osb = OCFS2_SB(sb);
+ u32 name_hash =
+ le32_to_cpu(bucket_xh(target)->xh_entries[0].xe_name_hash);
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
int ret, num_buckets, extend = 1;
u64 p_blkno;
u32 e_cpos, num_clusters;
+ /* The bucket at the front of the extent */
+ struct ocfs2_xattr_bucket *first;
- mlog(0, "Add new xattr bucket starting form %llu\n",
- (unsigned long long)header_bh->b_blocknr);
+ mlog(0, "Add new xattr bucket starting from %llu\n",
+ (unsigned long long)bucket_blkno(target));
- /*
- * Add refrence for header_bh here because it may be
- * changed in ocfs2_add_new_xattr_cluster and we need
- * to free it in the end.
- */
- get_bh(header_bh);
+ /* The first bucket of the original extent */
+ first = ocfs2_xattr_bucket_new(inode);
+ if (!first) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
ret = ocfs2_xattr_get_rec(inode, name_hash, &p_blkno, &e_cpos,
&num_clusters, el);
goto out;
}
- ret = ocfs2_read_block(inode, p_blkno, &first_bh);
+ ret = ocfs2_read_xattr_bucket(first, p_blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
num_buckets = ocfs2_xattr_buckets_per_cluster(osb) * num_clusters;
- first_xh = (struct ocfs2_xattr_header *)first_bh->b_data;
-
- if (num_buckets == le16_to_cpu(first_xh->xh_num_buckets)) {
+ if (num_buckets == le16_to_cpu(bucket_xh(first)->xh_num_buckets)) {
+ /*
+ * This can move first+target if the target bucket moves
+ * to the new extent.
+ */
ret = ocfs2_add_new_xattr_cluster(inode,
xb_bh,
- &first_bh,
- &header_bh,
+ first,
+ target,
&num_clusters,
e_cpos,
- p_blkno,
&extend,
ctxt);
if (ret) {
}
}
- if (extend)
+ if (extend) {
ret = ocfs2_extend_xattr_bucket(inode,
ctxt->handle,
- first_bh,
- header_bh,
+ first,
+ bucket_blkno(target),
num_clusters);
- if (ret)
- mlog_errno(ret);
+ if (ret)
+ mlog_errno(ret);
+ }
+
out:
- brelse(first_bh);
- brelse(header_bh);
+ ocfs2_xattr_bucket_free(first);
+
return ret;
}
return ret;
}
-static int ocfs2_xattr_value_update_size(struct inode *inode,
- handle_t *handle,
- struct buffer_head *xe_bh,
- struct ocfs2_xattr_entry *xe,
- u64 new_size)
-{
- int ret;
-
- ret = ocfs2_journal_access(handle, inode, xe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
-
- xe->xe_value_size = cpu_to_le64(new_size);
-
- ret = ocfs2_journal_dirty(handle, xe_bh);
- if (ret < 0)
- mlog_errno(ret);
-
-out:
- return ret;
-}
-
/*
* Truncate the specified xe_off entry in xattr bucket.
* bucket is indicated by header_bh and len is the new length.
* Copy the new updated xe and xe_value_root to new_xe and new_xv if needed.
*/
static int ocfs2_xattr_bucket_value_truncate(struct inode *inode,
- struct buffer_head *header_bh,
+ struct ocfs2_xattr_bucket *bucket,
int xe_off,
int len,
struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret, offset;
u64 value_blk;
- struct buffer_head *value_bh = NULL;
- struct ocfs2_xattr_value_root *xv;
struct ocfs2_xattr_entry *xe;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)header_bh->b_data;
+ struct ocfs2_xattr_header *xh = bucket_xh(bucket);
size_t blocksize = inode->i_sb->s_blocksize;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_access = ocfs2_journal_access,
+ };
xe = &xh->xh_entries[xe_off];
/* We don't allow ocfs2_xattr_value to be stored in different block. */
BUG_ON(value_blk != (offset + OCFS2_XATTR_ROOT_SIZE - 1) / blocksize);
- value_blk += header_bh->b_blocknr;
- ret = ocfs2_read_block(inode, value_blk, &value_bh);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ vb.vb_bh = bucket->bu_bhs[value_blk];
+ BUG_ON(!vb.vb_bh);
- xv = (struct ocfs2_xattr_value_root *)
- (value_bh->b_data + offset % blocksize);
+ vb.vb_xv = (struct ocfs2_xattr_value_root *)
+ (vb.vb_bh->b_data + offset % blocksize);
+ /*
+ * From here on out we have to dirty the bucket. The generic
+ * value calls only modify one of the bucket's bhs, but we need
+ * to send the bucket at once. So if they error, they *could* have
+ * modified something. We have to assume they did, and dirty
+ * the whole bucket. This leaves us in a consistent state.
+ */
mlog(0, "truncate %u in xattr bucket %llu to %d bytes.\n",
- xe_off, (unsigned long long)header_bh->b_blocknr, len);
- ret = ocfs2_xattr_value_truncate(inode, value_bh, xv, len, ctxt);
+ xe_off, (unsigned long long)bucket_blkno(bucket), len);
+ ret = ocfs2_xattr_value_truncate(inode, &vb, len, ctxt);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_xattr_value_update_size(inode, ctxt->handle,
- header_bh, xe, len);
+ ret = ocfs2_xattr_bucket_journal_access(ctxt->handle, bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
+ xe->xe_value_size = cpu_to_le64(len);
+
+ ocfs2_xattr_bucket_journal_dirty(ctxt->handle, bucket);
+
out:
- brelse(value_bh);
return ret;
}
BUG_ON(!xs->bucket->bu_bhs[0] || !xe || ocfs2_xattr_is_local(xe));
offset = xe - xh->xh_entries;
- ret = ocfs2_xattr_bucket_value_truncate(inode, xs->bucket->bu_bhs[0],
+ ret = ocfs2_xattr_bucket_value_truncate(inode, xs->bucket,
offset, len, ctxt);
if (ret)
mlog_errno(ret);
}
}
- handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
+ handle = ocfs2_start_trans(osb, ocfs2_remove_extent_credits(osb->sb));
if (IS_ERR(handle)) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_xb(handle, inode, root_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
xh_free_start = le16_to_cpu(xh->xh_free_start);
header_size = sizeof(struct ocfs2_xattr_header) +
count * sizeof(struct ocfs2_xattr_entry);
- max_free = OCFS2_XATTR_BUCKET_SIZE -
- le16_to_cpu(xh->xh_name_value_len) - header_size;
+ max_free = OCFS2_XATTR_BUCKET_SIZE - header_size -
+ le16_to_cpu(xh->xh_name_value_len) - OCFS2_XATTR_HEADER_GAP;
mlog_bug_on_msg(header_size > blocksize, "bucket %llu has header size "
"of %u which exceed block size\n",
need = 0;
}
- free = xh_free_start - header_size;
+ free = xh_free_start - header_size - OCFS2_XATTR_HEADER_GAP;
/*
* We need to make sure the new name/value pair
* can exist in the same block.
}
xh_free_start = le16_to_cpu(xh->xh_free_start);
- free = xh_free_start - header_size;
+ free = xh_free_start - header_size
+ - OCFS2_XATTR_HEADER_GAP;
if (xh_free_start % blocksize < need)
free -= xh_free_start % blocksize;
ret = ocfs2_add_new_xattr_bucket(inode,
xs->xattr_bh,
- xs->bucket->bu_bhs[0],
+ xs->bucket,
ctxt);
if (ret) {
mlog_errno(ret);
goto out;
}
+ /*
+ * ocfs2_add_new_xattr_bucket() will have updated
+ * xs->bucket if it moved, but it will not have updated
+ * any of the other search fields. Thus, we drop it and
+ * re-search. Everything should be cached, so it'll be
+ * quick.
+ */
ocfs2_xattr_bucket_relse(xs->bucket);
-
ret = ocfs2_xattr_index_block_find(inode, xs->xattr_bh,
xi->name_index,
xi->name, xs);
struct ocfs2_xattr_entry *xe;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_xattr_set_ctxt ctxt = {NULL, NULL,};
+ int credits = ocfs2_remove_extent_credits(osb->sb) +
+ ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- ocfs2_init_dealloc_ctxt(&ctxt.dealloc);
- ctxt.handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
- if (IS_ERR(ctxt.handle)) {
- ret = PTR_ERR(ctxt.handle);
- mlog_errno(ret);
- goto out;
- }
+ ocfs2_init_dealloc_ctxt(&ctxt.dealloc);
for (i = 0; i < le16_to_cpu(xh->xh_count); i++) {
xe = &xh->xh_entries[i];
if (ocfs2_xattr_is_local(xe))
continue;
- ret = ocfs2_xattr_bucket_value_truncate(inode,
- bucket->bu_bhs[0],
+ ctxt.handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(ctxt.handle)) {
+ ret = PTR_ERR(ctxt.handle);
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = ocfs2_xattr_bucket_value_truncate(inode, bucket,
i, 0, &ctxt);
+
+ ocfs2_commit_trans(osb, ctxt.handle);
if (ret) {
mlog_errno(ret);
break;
}
}
- ret = ocfs2_commit_trans(osb, ctxt.handle);
ocfs2_schedule_truncate_log_flush(osb, 1);
ocfs2_run_deallocs(osb, &ctxt.dealloc);
-out:
return ret;
}
}
/*
+ * 'security' attributes support
+ */
+static size_t ocfs2_xattr_security_list(struct inode *inode, char *list,
+ size_t list_size, const char *name,
+ size_t name_len)
+{
+ const size_t prefix_len = XATTR_SECURITY_PREFIX_LEN;
+ const size_t total_len = prefix_len + name_len + 1;
+
+ if (list && total_len <= list_size) {
+ memcpy(list, XATTR_SECURITY_PREFIX, prefix_len);
+ memcpy(list + prefix_len, name, name_len);
+ list[prefix_len + name_len] = '\0';
+ }
+ return total_len;
+}
+
+static int ocfs2_xattr_security_get(struct inode *inode, const char *name,
+ void *buffer, size_t size)
+{
+ if (strcmp(name, "") == 0)
+ return -EINVAL;
+ return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_SECURITY, name,
+ buffer, size);
+}
+
+static int ocfs2_xattr_security_set(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+{
+ if (strcmp(name, "") == 0)
+ return -EINVAL;
+
+ return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY, name, value,
+ size, flags);
+}
+
+int ocfs2_init_security_get(struct inode *inode,
+ struct inode *dir,
+ struct ocfs2_security_xattr_info *si)
+{
+ /* check whether ocfs2 support feature xattr */
+ if (!ocfs2_supports_xattr(OCFS2_SB(dir->i_sb)))
+ return -EOPNOTSUPP;
+ return security_inode_init_security(inode, dir, &si->name, &si->value,
+ &si->value_len);
+}
+
+int ocfs2_init_security_set(handle_t *handle,
+ struct inode *inode,
+ struct buffer_head *di_bh,
+ struct ocfs2_security_xattr_info *si,
+ struct ocfs2_alloc_context *xattr_ac,
+ struct ocfs2_alloc_context *data_ac)
+{
+ return ocfs2_xattr_set_handle(handle, inode, di_bh,
+ OCFS2_XATTR_INDEX_SECURITY,
+ si->name, si->value, si->value_len, 0,
+ xattr_ac, data_ac);
+}
+
+struct xattr_handler ocfs2_xattr_security_handler = {
+ .prefix = XATTR_SECURITY_PREFIX,
+ .list = ocfs2_xattr_security_list,
+ .get = ocfs2_xattr_security_get,
+ .set = ocfs2_xattr_security_set,
+};
+
+/*
* 'trusted' attributes support
*/
static size_t ocfs2_xattr_trusted_list(struct inode *inode, char *list,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff