#include "buffer_head_io.h"
#include "super.h"
#include "xattr.h"
-
+#include "refcounttree.h"
+#include "acl.h"
struct ocfs2_xattr_def_value_root {
struct ocfs2_xattr_value_root xv;
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,
};
int not_found;
};
-static int ocfs2_xattr_bucket_get_name_value(struct inode *inode,
+static int ocfs2_xattr_bucket_get_name_value(struct super_block *sb,
struct ocfs2_xattr_header *xh,
int index,
int *block_off,
struct ocfs2_xattr_search *xs);
static int ocfs2_xattr_tree_list_index_block(struct inode *inode,
- struct ocfs2_xattr_tree_root *xt,
+ struct buffer_head *blk_bh,
char *buffer,
size_t buffer_size);
struct ocfs2_xattr_search *xs,
struct ocfs2_xattr_set_ctxt *ctxt);
-static int ocfs2_delete_xattr_index_block(struct inode *inode,
- struct buffer_head *xb_bh);
+typedef int (xattr_tree_rec_func)(struct inode *inode,
+ struct buffer_head *root_bh,
+ u64 blkno, u32 cpos, u32 len, void *para);
+static int ocfs2_iterate_xattr_index_block(struct inode *inode,
+ struct buffer_head *root_bh,
+ xattr_tree_rec_func *rec_func,
+ void *para);
+static int ocfs2_delete_xattr_in_bucket(struct inode *inode,
+ struct ocfs2_xattr_bucket *bucket,
+ void *para);
+static int ocfs2_rm_xattr_cluster(struct inode *inode,
+ struct buffer_head *root_bh,
+ u64 blkno,
+ u32 cpos,
+ u32 len,
+ void *para);
+
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 int ocfs2_prepare_refcount_xattr(struct inode *inode,
+ struct ocfs2_dinode *di,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xis,
+ struct ocfs2_xattr_search *xbs,
+ struct ocfs2_refcount_tree **ref_tree,
+ int *meta_need,
+ int *credits);
+static int ocfs2_get_xattr_tree_value_root(struct super_block *sb,
+ struct ocfs2_xattr_bucket *bucket,
+ int offset,
+ struct ocfs2_xattr_value_root **xv,
+ struct buffer_head **bh);
+static int ocfs2_xattr_security_set(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags);
static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
{
break;
}
- if (!ocfs2_buffer_uptodate(bucket->bu_inode,
+ if (!ocfs2_buffer_uptodate(INODE_CACHE(bucket->bu_inode),
bucket->bu_bhs[i]))
- ocfs2_set_new_buffer_uptodate(bucket->bu_inode,
+ ocfs2_set_new_buffer_uptodate(INODE_CACHE(bucket->bu_inode),
bucket->bu_bhs[i]);
}
{
int rc;
- rc = ocfs2_read_blocks(bucket->bu_inode, xb_blkno,
+ rc = ocfs2_read_blocks(INODE_CACHE(bucket->bu_inode), xb_blkno,
bucket->bu_blocks, bucket->bu_bhs, 0,
NULL);
if (!rc) {
int i, rc = 0;
for (i = 0; i < bucket->bu_blocks; i++) {
- rc = ocfs2_journal_access(handle, bucket->bu_inode,
+ rc = ocfs2_journal_access(handle,
+ INODE_CACHE(bucket->bu_inode),
bucket->bu_bhs[i], type);
if (rc) {
mlog_errno(rc);
int rc;
struct buffer_head *tmp = *bh;
- rc = ocfs2_read_block(inode, xb_blkno, &tmp,
+ rc = ocfs2_read_block(INODE_CACHE(inode), xb_blkno, &tmp,
ocfs2_validate_xattr_block);
/* If ocfs2_read_block() got us a new bh, pass it up. */
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(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, vb);
+ ocfs2_init_xattr_value_extent_tree(&et, INODE_CACHE(inode), vb);
- status = vb->vb_access(handle, inode, vb->vb_bh,
+ status = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
}
prev_clusters = le32_to_cpu(vb->vb_xv->xr_clusters);
- status = ocfs2_add_clusters_in_btree(osb,
- inode,
+ status = ocfs2_add_clusters_in_btree(handle,
+ &et,
&logical_start,
clusters_to_add,
0,
- &et,
- handle,
ctxt->data_ac,
ctxt->meta_ac,
&why);
static int __ocfs2_remove_xattr_range(struct inode *inode,
struct ocfs2_xattr_value_buf *vb,
u32 cpos, u32 phys_cpos, u32 len,
+ unsigned int ext_flags,
struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret;
handle_t *handle = ctxt->handle;
struct ocfs2_extent_tree et;
- ocfs2_init_xattr_value_extent_tree(&et, inode, vb);
+ ocfs2_init_xattr_value_extent_tree(&et, INODE_CACHE(inode), vb);
- ret = vb->vb_access(handle, inode, vb->vb_bh,
+ ret = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_remove_extent(inode, &et, cpos, len, handle, ctxt->meta_ac,
+ ret = ocfs2_remove_extent(handle, &et, cpos, len, ctxt->meta_ac,
&ctxt->dealloc);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_cache_cluster_dealloc(&ctxt->dealloc, phys_blkno, len);
+ if (ext_flags & OCFS2_EXT_REFCOUNTED)
+ ret = ocfs2_decrease_refcount(inode, handle,
+ ocfs2_blocks_to_clusters(inode->i_sb,
+ phys_blkno),
+ len, ctxt->meta_ac, &ctxt->dealloc, 1);
+ else
+ ret = ocfs2_cache_cluster_dealloc(&ctxt->dealloc,
+ phys_blkno, len);
if (ret)
mlog_errno(ret);
struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret = 0;
+ unsigned int ext_flags;
u32 trunc_len, cpos, phys_cpos, alloc_size;
u64 block;
while (trunc_len) {
ret = ocfs2_xattr_get_clusters(inode, cpos, &phys_cpos,
&alloc_size,
- &vb->vb_xv->xr_list);
+ &vb->vb_xv->xr_list, &ext_flags);
if (ret) {
mlog_errno(ret);
goto out;
ret = __ocfs2_remove_xattr_range(inode, vb, cpos,
phys_cpos, alloc_size,
- ctxt);
+ ext_flags, ctxt);
if (ret) {
mlog_errno(ret);
goto out;
}
block = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
- ocfs2_remove_xattr_clusters_from_cache(inode, block,
- alloc_size);
+ ocfs2_remove_xattr_clusters_from_cache(INODE_CACHE(inode),
+ block, alloc_size);
cpos += alloc_size;
trunc_len -= alloc_size;
}
return result;
}
+int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
+ struct ocfs2_dinode *di)
+{
+ struct ocfs2_xattr_header *xh;
+ int i;
+
+ xh = (struct ocfs2_xattr_header *)
+ ((void *)di + inode->i_sb->s_blocksize -
+ le16_to_cpu(di->i_xattr_inline_size));
+
+ for (i = 0; i < le16_to_cpu(xh->xh_count); i++)
+ if (!ocfs2_xattr_is_local(&xh->xh_entries[i]))
+ return 1;
+
+ return 0;
+}
+
static int ocfs2_xattr_ibody_list(struct inode *inode,
struct ocfs2_dinode *di,
char *buffer,
struct ocfs2_xattr_header *header = &xb->xb_attrs.xb_header;
ret = ocfs2_xattr_list_entries(inode, header,
buffer, buffer_size);
- } else {
- struct ocfs2_xattr_tree_root *xt = &xb->xb_attrs.xb_root;
- ret = ocfs2_xattr_tree_list_index_block(inode, xt,
+ } else
+ ret = ocfs2_xattr_tree_list_index_block(inode, blk_bh,
buffer, buffer_size);
- }
brelse(blk_bh);
cpos = 0;
while (cpos < clusters) {
ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
- &num_clusters, el);
+ &num_clusters, el, NULL);
if (ret) {
mlog_errno(ret);
goto out;
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, NULL);
+ ret = ocfs2_read_block(INODE_CACHE(inode), blkno,
+ &bh, NULL);
if (ret) {
mlog_errno(ret);
goto out;
i = xs->here - xs->header->xh_entries;
if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED) {
- ret = ocfs2_xattr_bucket_get_name_value(inode,
+ ret = ocfs2_xattr_bucket_get_name_value(inode->i_sb,
bucket_xh(xs->bucket),
i,
&block_off,
static int __ocfs2_xattr_set_value_outside(struct inode *inode,
handle_t *handle,
- struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_xattr_value_buf *vb,
const void *value,
int value_len)
{
u32 clusters = ocfs2_clusters_for_bytes(inode->i_sb, value_len);
u64 blkno;
struct buffer_head *bh = NULL;
+ unsigned int ext_flags;
+ struct ocfs2_xattr_value_root *xv = vb->vb_xv;
BUG_ON(clusters > le32_to_cpu(xv->xr_clusters));
while (cpos < clusters) {
ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
- &num_clusters, &xv->xr_list);
+ &num_clusters, &xv->xr_list,
+ &ext_flags);
if (ret) {
mlog_errno(ret);
goto out;
}
+ BUG_ON(ext_flags & OCFS2_EXT_REFCOUNTED);
+
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, NULL);
+ ret = ocfs2_read_block(INODE_CACHE(inode), blkno,
+ &bh, NULL);
if (ret) {
mlog_errno(ret);
goto out;
}
ret = ocfs2_journal_access(handle,
- inode,
+ INODE_CACHE(inode),
bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
void *val = xs->base + offs;
size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
- ret = vb->vb_access(handle, inode, vb->vb_bh,
+ ret = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
{
int ret;
- ret = vb->vb_access(handle, inode, vb->vb_bh,
+ ret = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
mlog_errno(ret);
return ret;
}
- ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, vb->vb_xv,
+ ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, vb,
xi->value, xi->value_len);
if (ret < 0)
mlog_errno(ret);
ret = __ocfs2_xattr_set_value_outside(inode,
handle,
- vb.vb_xv,
+ &vb,
xi->value,
xi->value_len);
if (ret < 0)
}
}
- ret = ocfs2_journal_access_di(handle, inode, xs->inode_bh,
+ ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), xs->inode_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
}
if (!(flag & OCFS2_INLINE_XATTR_FL)) {
- ret = vb.vb_access(handle, inode, vb.vb_bh,
+ ret = vb.vb_access(handle, INODE_CACHE(inode), vb.vb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
return ret;
}
+/*
+ * In xattr remove, if it is stored outside and refcounted, we may have
+ * the chance to split the refcount tree. So need the allocators.
+ */
+static int ocfs2_lock_xattr_remove_allocators(struct inode *inode,
+ struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh,
+ struct ocfs2_alloc_context **meta_ac,
+ int *ref_credits)
+{
+ int ret, meta_add = 0;
+ u32 p_cluster, num_clusters;
+ unsigned int ext_flags;
+
+ *ref_credits = 0;
+ ret = ocfs2_xattr_get_clusters(inode, 0, &p_cluster,
+ &num_clusters,
+ &xv->xr_list,
+ &ext_flags);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (!(ext_flags & OCFS2_EXT_REFCOUNTED))
+ goto out;
+
+ ret = ocfs2_refcounted_xattr_delete_need(inode, ref_ci,
+ ref_root_bh, xv,
+ &meta_add, ref_credits);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_reserve_new_metadata_blocks(OCFS2_SB(inode->i_sb),
+ meta_add, meta_ac);
+ if (ret)
+ mlog_errno(ret);
+
+out:
+ return ret;
+}
+
static int ocfs2_remove_value_outside(struct inode*inode,
struct ocfs2_xattr_value_buf *vb,
- struct ocfs2_xattr_header *header)
+ struct ocfs2_xattr_header *header,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh)
{
- int ret = 0, i;
+ int ret = 0, i, ref_credits;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_xattr_set_ctxt ctxt = { NULL, NULL, };
+ void *val;
ocfs2_init_dealloc_ctxt(&ctxt.dealloc);
- 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);
- goto out;
- }
-
for (i = 0; i < le16_to_cpu(header->xh_count); i++) {
struct ocfs2_xattr_entry *entry = &header->xh_entries[i];
- if (!ocfs2_xattr_is_local(entry)) {
- void *val;
+ if (ocfs2_xattr_is_local(entry))
+ continue;
+
+ val = (void *)header +
+ le16_to_cpu(entry->xe_name_offset);
+ vb->vb_xv = (struct ocfs2_xattr_value_root *)
+ (val + OCFS2_XATTR_SIZE(entry->xe_name_len));
- val = (void *)header +
- le16_to_cpu(entry->xe_name_offset);
- vb->vb_xv = (struct ocfs2_xattr_value_root *)
- (val + OCFS2_XATTR_SIZE(entry->xe_name_len));
- ret = ocfs2_xattr_value_truncate(inode, vb, 0, &ctxt);
- if (ret < 0) {
- mlog_errno(ret);
- break;
- }
+ ret = ocfs2_lock_xattr_remove_allocators(inode, vb->vb_xv,
+ ref_ci, ref_root_bh,
+ &ctxt.meta_ac,
+ &ref_credits);
+
+ ctxt.handle = ocfs2_start_trans(osb, ref_credits +
+ ocfs2_remove_extent_credits(osb->sb));
+ if (IS_ERR(ctxt.handle)) {
+ ret = PTR_ERR(ctxt.handle);
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = ocfs2_xattr_value_truncate(inode, vb, 0, &ctxt);
+ if (ret < 0) {
+ mlog_errno(ret);
+ break;
+ }
+
+ ocfs2_commit_trans(osb, ctxt.handle);
+ if (ctxt.meta_ac) {
+ ocfs2_free_alloc_context(ctxt.meta_ac);
+ ctxt.meta_ac = NULL;
}
}
- ocfs2_commit_trans(osb, ctxt.handle);
+ if (ctxt.meta_ac)
+ ocfs2_free_alloc_context(ctxt.meta_ac);
ocfs2_schedule_truncate_log_flush(osb, 1);
ocfs2_run_deallocs(osb, &ctxt.dealloc);
-out:
return ret;
}
static int ocfs2_xattr_ibody_remove(struct inode *inode,
- struct buffer_head *di_bh)
+ struct buffer_head *di_bh,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh)
{
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
((void *)di + inode->i_sb->s_blocksize -
le16_to_cpu(di->i_xattr_inline_size));
- ret = ocfs2_remove_value_outside(inode, &vb, header);
+ ret = ocfs2_remove_value_outside(inode, &vb, header,
+ ref_ci, ref_root_bh);
return ret;
}
+struct ocfs2_rm_xattr_bucket_para {
+ struct ocfs2_caching_info *ref_ci;
+ struct buffer_head *ref_root_bh;
+};
+
static int ocfs2_xattr_block_remove(struct inode *inode,
- struct buffer_head *blk_bh)
+ struct buffer_head *blk_bh,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh)
{
struct ocfs2_xattr_block *xb;
int ret = 0;
.vb_bh = blk_bh,
.vb_access = ocfs2_journal_access_xb,
};
+ struct ocfs2_rm_xattr_bucket_para args = {
+ .ref_ci = ref_ci,
+ .ref_root_bh = ref_root_bh,
+ };
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, &vb, header);
+ ret = ocfs2_remove_value_outside(inode, &vb, header,
+ ref_ci, ref_root_bh);
} else
- ret = ocfs2_delete_xattr_index_block(inode, blk_bh);
+ ret = ocfs2_iterate_xattr_index_block(inode,
+ blk_bh,
+ ocfs2_rm_xattr_cluster,
+ &args);
return ret;
}
static int ocfs2_xattr_free_block(struct inode *inode,
- u64 block)
+ u64 block,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh)
{
struct inode *xb_alloc_inode;
struct buffer_head *xb_alloc_bh = NULL;
goto out;
}
- ret = ocfs2_xattr_block_remove(inode, blk_bh);
+ ret = ocfs2_xattr_block_remove(inode, blk_bh, ref_ci, ref_root_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
{
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_refcount_tree *ref_tree = NULL;
+ struct buffer_head *ref_root_bh = NULL;
+ struct ocfs2_caching_info *ref_ci = NULL;
handle_t *handle;
int ret;
if (!(oi->ip_dyn_features & OCFS2_HAS_XATTR_FL))
return 0;
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL) {
+ ret = ocfs2_lock_refcount_tree(OCFS2_SB(inode->i_sb),
+ le64_to_cpu(di->i_refcount_loc),
+ 1, &ref_tree, &ref_root_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ ref_ci = &ref_tree->rf_ci;
+
+ }
+
if (oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL) {
- ret = ocfs2_xattr_ibody_remove(inode, di_bh);
+ ret = ocfs2_xattr_ibody_remove(inode, di_bh,
+ ref_ci, ref_root_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
if (di->i_xattr_loc) {
ret = ocfs2_xattr_free_block(inode,
- le64_to_cpu(di->i_xattr_loc));
+ le64_to_cpu(di->i_xattr_loc),
+ ref_ci, ref_root_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
out_commit:
ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out:
+ if (ref_tree)
+ ocfs2_unlock_refcount_tree(OCFS2_SB(inode->i_sb), ref_tree, 1);
+ brelse(ref_root_bh);
return ret;
}
return ret;
}
+static int ocfs2_create_xattr_block(handle_t *handle,
+ struct inode *inode,
+ struct buffer_head *inode_bh,
+ struct ocfs2_alloc_context *meta_ac,
+ struct buffer_head **ret_bh,
+ int indexed)
+{
+ int ret;
+ u16 suballoc_bit_start;
+ u32 num_got;
+ u64 first_blkno;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)inode_bh->b_data;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct buffer_head *new_bh = NULL;
+ struct ocfs2_xattr_block *xblk;
+
+ ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), inode_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto end;
+ }
+
+ ret = ocfs2_claim_metadata(osb, handle, meta_ac, 1,
+ &suballoc_bit_start, &num_got,
+ &first_blkno);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto end;
+ }
+
+ new_bh = sb_getblk(inode->i_sb, first_blkno);
+ ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), new_bh);
+
+ ret = ocfs2_journal_access_xb(handle, INODE_CACHE(inode),
+ new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto end;
+ }
+
+ /* Initialize ocfs2_xattr_block */
+ xblk = (struct ocfs2_xattr_block *)new_bh->b_data;
+ memset(xblk, 0, inode->i_sb->s_blocksize);
+ strcpy((void *)xblk, OCFS2_XATTR_BLOCK_SIGNATURE);
+ xblk->xb_suballoc_slot = cpu_to_le16(osb->slot_num);
+ xblk->xb_suballoc_bit = cpu_to_le16(suballoc_bit_start);
+ xblk->xb_fs_generation = cpu_to_le32(osb->fs_generation);
+ xblk->xb_blkno = cpu_to_le64(first_blkno);
+
+ if (indexed) {
+ struct ocfs2_xattr_tree_root *xr = &xblk->xb_attrs.xb_root;
+ xr->xt_clusters = cpu_to_le32(1);
+ xr->xt_last_eb_blk = 0;
+ xr->xt_list.l_tree_depth = 0;
+ xr->xt_list.l_count = cpu_to_le16(
+ ocfs2_xattr_recs_per_xb(inode->i_sb));
+ xr->xt_list.l_next_free_rec = cpu_to_le16(1);
+ xblk->xb_flags = cpu_to_le16(OCFS2_XATTR_INDEXED);
+ }
+
+ ret = ocfs2_journal_dirty(handle, new_bh);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto end;
+ }
+ di->i_xattr_loc = cpu_to_le64(first_blkno);
+ ocfs2_journal_dirty(handle, inode_bh);
+
+ *ret_bh = new_bh;
+ new_bh = NULL;
+
+end:
+ brelse(new_bh);
+ return ret;
+}
+
/*
* ocfs2_xattr_block_set()
*
struct ocfs2_xattr_set_ctxt *ctxt)
{
struct buffer_head *new_bh = NULL;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
handle_t *handle = ctxt->handle;
struct ocfs2_xattr_block *xblk = NULL;
- u16 suballoc_bit_start;
- u32 num_got;
- u64 first_blkno;
int ret;
if (!xs->xattr_bh) {
- ret = ocfs2_journal_access_di(handle, inode, xs->inode_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (ret < 0) {
- mlog_errno(ret);
- goto end;
- }
-
- ret = ocfs2_claim_metadata(osb, handle, ctxt->meta_ac, 1,
- &suballoc_bit_start, &num_got,
- &first_blkno);
- 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_xb(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (ret < 0) {
+ ret = ocfs2_create_xattr_block(handle, inode, xs->inode_bh,
+ ctxt->meta_ac, &new_bh, 0);
+ if (ret) {
mlog_errno(ret);
goto end;
}
- /* Initialize ocfs2_xattr_block */
xs->xattr_bh = new_bh;
- xblk = (struct ocfs2_xattr_block *)new_bh->b_data;
- memset(xblk, 0, inode->i_sb->s_blocksize);
- strcpy((void *)xblk, OCFS2_XATTR_BLOCK_SIGNATURE);
- xblk->xb_suballoc_slot = cpu_to_le16(osb->slot_num);
- xblk->xb_suballoc_bit = cpu_to_le16(suballoc_bit_start);
- xblk->xb_fs_generation = cpu_to_le32(osb->fs_generation);
- xblk->xb_blkno = cpu_to_le64(first_blkno);
-
+ xblk = (struct ocfs2_xattr_block *)xs->xattr_bh->b_data;
xs->header = &xblk->xb_attrs.xb_header;
xs->base = (void *)xs->header;
xs->end = (void *)xblk + inode->i_sb->s_blocksize;
xs->here = xs->header->xh_entries;
-
- ret = ocfs2_journal_dirty(handle, new_bh);
- if (ret < 0) {
- mlog_errno(ret);
- goto end;
- }
- di->i_xattr_loc = cpu_to_le64(first_blkno);
- ocfs2_journal_dirty(handle, xs->inode_bh);
} else
xblk = (struct ocfs2_xattr_block *)xs->xattr_bh->b_data;
old_in_xb = 1;
if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED) {
- ret = ocfs2_xattr_bucket_get_name_value(inode,
+ ret = ocfs2_xattr_bucket_get_name_value(inode->i_sb,
bucket_xh(xbs->bucket),
i, &block_off,
&name_offset);
struct ocfs2_xattr_search *xis,
struct ocfs2_xattr_search *xbs,
struct ocfs2_xattr_set_ctxt *ctxt,
+ int extra_meta,
int *credits)
{
int clusters_add, meta_add, ret;
return ret;
}
+ meta_add += extra_meta;
mlog(0, "Set xattr %s, reserve meta blocks = %d, clusters = %d, "
"credits = %d\n", xi->name, meta_add, clusters_add, *credits);
if (!ret) {
/* Update inode ctime. */
- ret = ocfs2_journal_access_di(ctxt->handle, inode,
+ ret = ocfs2_journal_access_di(ctxt->handle, INODE_CACHE(inode),
xis->inode_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
{
struct buffer_head *di_bh = NULL;
struct ocfs2_dinode *di;
- int ret, credits;
+ int ret, credits, ref_meta = 0, ref_credits = 0;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct inode *tl_inode = osb->osb_tl_inode;
struct ocfs2_xattr_set_ctxt ctxt = { NULL, NULL, };
+ struct ocfs2_refcount_tree *ref_tree = NULL;
struct ocfs2_xattr_info xi = {
.name_index = name_index,
goto cleanup;
}
+ /* Check whether the value is refcounted and do some prepartion. */
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL &&
+ (!xis.not_found || !xbs.not_found)) {
+ ret = ocfs2_prepare_refcount_xattr(inode, di, &xi,
+ &xis, &xbs, &ref_tree,
+ &ref_meta, &ref_credits);
+ if (ret) {
+ mlog_errno(ret);
+ goto cleanup;
+ }
+ }
mutex_lock(&tl_inode->i_mutex);
mutex_unlock(&tl_inode->i_mutex);
ret = ocfs2_init_xattr_set_ctxt(inode, di, &xi, &xis,
- &xbs, &ctxt, &credits);
+ &xbs, &ctxt, ref_meta, &credits);
if (ret) {
mlog_errno(ret);
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);
+ ctxt.handle = ocfs2_start_trans(osb, credits + ref_credits);
if (IS_ERR(ctxt.handle)) {
ret = PTR_ERR(ctxt.handle);
mlog_errno(ret);
if (ocfs2_dealloc_has_cluster(&ctxt.dealloc))
ocfs2_schedule_truncate_log_flush(osb, 1);
ocfs2_run_deallocs(osb, &ctxt.dealloc);
+
cleanup:
+ if (ref_tree)
+ ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
up_write(&OCFS2_I(inode)->ip_xattr_sem);
+ if (!value && !ret) {
+ ret = ocfs2_try_remove_refcount_tree(inode, di_bh);
+ if (ret)
+ mlog_errno(ret);
+ }
ocfs2_inode_unlock(inode, 1);
cleanup_nolock:
brelse(di_bh);
u64 e_blkno = 0;
if (el->l_tree_depth) {
- ret = ocfs2_find_leaf(inode, el, name_hash, &eb_bh);
+ ret = ocfs2_find_leaf(INODE_CACHE(inode), el, name_hash,
+ &eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
if (cmp)
continue;
- ret = ocfs2_xattr_bucket_get_name_value(inode,
+ ret = ocfs2_xattr_bucket_get_name_value(inode->i_sb,
xh,
i,
&block_off,
size_t result;
};
-static int ocfs2_xattr_bucket_get_name_value(struct inode *inode,
+static int ocfs2_xattr_bucket_get_name_value(struct super_block *sb,
struct ocfs2_xattr_header *xh,
int index,
int *block_off,
name_offset = le16_to_cpu(xh->xh_entries[index].xe_name_offset);
- *block_off = name_offset >> inode->i_sb->s_blocksize_bits;
- *new_offset = name_offset % inode->i_sb->s_blocksize;
+ *block_off = name_offset >> sb->s_blocksize_bits;
+ *new_offset = name_offset % sb->s_blocksize;
return 0;
}
prefix = ocfs2_xattr_prefix(type);
if (prefix) {
- ret = ocfs2_xattr_bucket_get_name_value(inode,
+ ret = ocfs2_xattr_bucket_get_name_value(inode->i_sb,
bucket_xh(bucket),
i,
&block_off,
return ret;
}
-static int ocfs2_xattr_tree_list_index_block(struct inode *inode,
- struct ocfs2_xattr_tree_root *xt,
- char *buffer,
- size_t buffer_size)
+static int ocfs2_iterate_xattr_index_block(struct inode *inode,
+ struct buffer_head *blk_bh,
+ xattr_tree_rec_func *rec_func,
+ void *para)
{
- struct ocfs2_extent_list *el = &xt->xt_list;
+ struct ocfs2_xattr_block *xb =
+ (struct ocfs2_xattr_block *)blk_bh->b_data;
+ struct ocfs2_extent_list *el = &xb->xb_attrs.xb_root.xt_list;
int ret = 0;
u32 name_hash = UINT_MAX, e_cpos = 0, num_clusters = 0;
u64 p_blkno = 0;
- struct ocfs2_xattr_tree_list xl = {
- .buffer = buffer,
- .buffer_size = buffer_size,
- .result = 0,
- };
- if (le16_to_cpu(el->l_next_free_rec) == 0)
+ if (!el->l_next_free_rec || !rec_func)
return 0;
while (name_hash > 0) {
&e_cpos, &num_clusters, el);
if (ret) {
mlog_errno(ret);
- goto out;
+ break;
}
- ret = ocfs2_iterate_xattr_buckets(inode, p_blkno, num_clusters,
- ocfs2_list_xattr_bucket,
- &xl);
+ ret = rec_func(inode, blk_bh, p_blkno, e_cpos,
+ num_clusters, para);
if (ret) {
if (ret != -ERANGE)
mlog_errno(ret);
- goto out;
+ break;
}
if (e_cpos == 0)
name_hash = e_cpos - 1;
}
+ return ret;
+
+}
+
+static int ocfs2_list_xattr_tree_rec(struct inode *inode,
+ struct buffer_head *root_bh,
+ u64 blkno, u32 cpos, u32 len, void *para)
+{
+ return ocfs2_iterate_xattr_buckets(inode, blkno, len,
+ ocfs2_list_xattr_bucket, para);
+}
+
+static int ocfs2_xattr_tree_list_index_block(struct inode *inode,
+ struct buffer_head *blk_bh,
+ char *buffer,
+ size_t buffer_size)
+{
+ int ret;
+ struct ocfs2_xattr_tree_list xl = {
+ .buffer = buffer,
+ .buffer_size = buffer_size,
+ .result = 0,
+ };
+
+ ret = ocfs2_iterate_xattr_index_block(inode, blk_bh,
+ ocfs2_list_xattr_tree_rec, &xl);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
ret = xl.result;
out:
return ret;
*/
down_write(&oi->ip_alloc_sem);
- ret = ocfs2_journal_access_xb(handle, inode, xb_bh,
+ ret = ocfs2_journal_access_xb(handle, INODE_CACHE(inode), xb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
(unsigned long long)OCFS2_I(inode)->ip_blkno,
prev_cpos, (unsigned long long)bucket_blkno(first));
- ocfs2_init_xattr_tree_extent_tree(&et, inode, root_bh);
+ ocfs2_init_xattr_tree_extent_tree(&et, INODE_CACHE(inode), root_bh);
- ret = ocfs2_journal_access_xb(handle, inode, root_bh,
+ ret = ocfs2_journal_access_xb(handle, INODE_CACHE(inode), root_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
mlog(0, "Insert %u clusters at block %llu for xattr at %u\n",
num_bits, (unsigned long long)block, v_start);
- ret = ocfs2_insert_extent(osb, handle, inode, &et, v_start, block,
+ ret = ocfs2_insert_extent(handle, &et, v_start, block,
num_bits, 0, ctxt->meta_ac);
if (ret < 0) {
mlog_errno(ret);
struct ocfs2_xattr_entry *xe = xs->here;
struct ocfs2_xattr_header *xh = bucket_xh(xs->bucket);
void *base;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_access = ocfs2_journal_access,
+ };
BUG_ON(!xs->base || !xe || ocfs2_xattr_is_local(xe));
- ret = ocfs2_xattr_bucket_get_name_value(inode, xh,
+ ret = ocfs2_xattr_bucket_get_name_value(inode->i_sb, xh,
xe - xh->xh_entries,
&block_off,
&offset);
xv = (struct ocfs2_xattr_value_root *)(base + offset +
OCFS2_XATTR_SIZE(xe->xe_name_len));
+ vb.vb_xv = xv;
+ vb.vb_bh = xs->bucket->bu_bhs[block_off];
ret = __ocfs2_xattr_set_value_outside(inode, handle,
- xv, val, value_len);
+ &vb, val, value_len);
if (ret)
mlog_errno(ret);
out:
struct buffer_head *root_bh,
u64 blkno,
u32 cpos,
- u32 len)
+ u32 len,
+ void *para)
{
int ret;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_cached_dealloc_ctxt dealloc;
struct ocfs2_extent_tree et;
- ocfs2_init_xattr_tree_extent_tree(&et, inode, root_bh);
+ ret = ocfs2_iterate_xattr_buckets(inode, blkno, len,
+ ocfs2_delete_xattr_in_bucket, para);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ ocfs2_init_xattr_tree_extent_tree(&et, INODE_CACHE(inode), root_bh);
ocfs2_init_dealloc_ctxt(&dealloc);
mlog(0, "rm xattr extent rec at %u len = %u, start from %llu\n",
cpos, len, (unsigned long long)blkno);
- ocfs2_remove_xattr_clusters_from_cache(inode, blkno, len);
+ ocfs2_remove_xattr_clusters_from_cache(INODE_CACHE(inode), blkno,
+ len);
ret = ocfs2_lock_allocators(inode, &et, 0, 1, NULL, &meta_ac);
if (ret) {
goto out;
}
- ret = ocfs2_journal_access_xb(handle, inode, root_bh,
+ ret = ocfs2_journal_access_xb(handle, INODE_CACHE(inode), root_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
}
- ret = ocfs2_remove_extent(inode, &et, cpos, len, handle, meta_ac,
+ ret = ocfs2_remove_extent(handle, &et, cpos, len, meta_ac,
&dealloc);
if (ret) {
mlog_errno(ret);
struct ocfs2_xattr_bucket *bucket,
void *para)
{
- int ret = 0;
+ int ret = 0, ref_credits;
struct ocfs2_xattr_header *xh = bucket_xh(bucket);
u16 i;
struct ocfs2_xattr_entry *xe;
struct ocfs2_xattr_set_ctxt ctxt = {NULL, NULL,};
int credits = ocfs2_remove_extent_credits(osb->sb) +
ocfs2_blocks_per_xattr_bucket(inode->i_sb);
-
+ struct ocfs2_xattr_value_root *xv;
+ struct ocfs2_rm_xattr_bucket_para *args =
+ (struct ocfs2_rm_xattr_bucket_para *)para;
ocfs2_init_dealloc_ctxt(&ctxt.dealloc);
if (ocfs2_xattr_is_local(xe))
continue;
- ctxt.handle = ocfs2_start_trans(osb, credits);
+ ret = ocfs2_get_xattr_tree_value_root(inode->i_sb, bucket,
+ i, &xv, NULL);
+
+ ret = ocfs2_lock_xattr_remove_allocators(inode, xv,
+ args->ref_ci,
+ args->ref_root_bh,
+ &ctxt.meta_ac,
+ &ref_credits);
+
+ ctxt.handle = ocfs2_start_trans(osb, credits + ref_credits);
if (IS_ERR(ctxt.handle)) {
ret = PTR_ERR(ctxt.handle);
mlog_errno(ret);
i, 0, &ctxt);
ocfs2_commit_trans(osb, ctxt.handle);
+ if (ctxt.meta_ac) {
+ ocfs2_free_alloc_context(ctxt.meta_ac);
+ ctxt.meta_ac = NULL;
+ }
if (ret) {
mlog_errno(ret);
break;
}
}
+ if (ctxt.meta_ac)
+ ocfs2_free_alloc_context(ctxt.meta_ac);
ocfs2_schedule_truncate_log_flush(osb, 1);
ocfs2_run_deallocs(osb, &ctxt.dealloc);
return ret;
}
-static int ocfs2_delete_xattr_index_block(struct inode *inode,
- struct buffer_head *xb_bh)
+/*
+ * Whenever we modify a xattr value root in the bucket(e.g, CoW
+ * or change the extent record flag), we need to recalculate
+ * the metaecc for the whole bucket. So it is done here.
+ *
+ * Note:
+ * We have to give the extra credits for the caller.
+ */
+static int ocfs2_xattr_bucket_post_refcount(struct inode *inode,
+ handle_t *handle,
+ void *para)
{
- struct ocfs2_xattr_block *xb =
- (struct ocfs2_xattr_block *)xb_bh->b_data;
- struct ocfs2_extent_list *el = &xb->xb_attrs.xb_root.xt_list;
- int ret = 0;
- u32 name_hash = UINT_MAX, e_cpos, num_clusters;
- u64 p_blkno;
-
- if (le16_to_cpu(el->l_next_free_rec) == 0)
- return 0;
-
- while (name_hash > 0) {
- ret = ocfs2_xattr_get_rec(inode, name_hash, &p_blkno,
- &e_cpos, &num_clusters, el);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ int ret;
+ struct ocfs2_xattr_bucket *bucket =
+ (struct ocfs2_xattr_bucket *)para;
- ret = ocfs2_iterate_xattr_buckets(inode, p_blkno, num_clusters,
- ocfs2_delete_xattr_in_bucket,
- NULL);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ ret = ocfs2_xattr_bucket_journal_access(handle, bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
- ret = ocfs2_rm_xattr_cluster(inode, xb_bh,
- p_blkno, e_cpos, num_clusters);
- if (ret) {
- mlog_errno(ret);
- break;
- }
+ ocfs2_xattr_bucket_journal_dirty(handle, bucket);
- if (e_cpos == 0)
- break;
+ return 0;
+}
- name_hash = e_cpos - 1;
- }
+/*
+ * Special action we need if the xattr value is refcounted.
+ *
+ * 1. If the xattr is refcounted, lock the tree.
+ * 2. CoW the xattr if we are setting the new value and the value
+ * will be stored outside.
+ * 3. In other case, decrease_refcount will work for us, so just
+ * lock the refcount tree, calculate the meta and credits is OK.
+ *
+ * We have to do CoW before ocfs2_init_xattr_set_ctxt since
+ * currently CoW is a completed transaction, while this function
+ * will also lock the allocators and let us deadlock. So we will
+ * CoW the whole xattr value.
+ */
+static int ocfs2_prepare_refcount_xattr(struct inode *inode,
+ struct ocfs2_dinode *di,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xis,
+ struct ocfs2_xattr_search *xbs,
+ struct ocfs2_refcount_tree **ref_tree,
+ int *meta_add,
+ int *credits)
+{
+ int ret = 0;
+ struct ocfs2_xattr_block *xb;
+ struct ocfs2_xattr_entry *xe;
+ char *base;
+ u32 p_cluster, num_clusters;
+ unsigned int ext_flags;
+ int name_offset, name_len;
+ struct ocfs2_xattr_value_buf vb;
+ struct ocfs2_xattr_bucket *bucket = NULL;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct ocfs2_post_refcount refcount;
+ struct ocfs2_post_refcount *p = NULL;
+ struct buffer_head *ref_root_bh = NULL;
+
+ if (!xis->not_found) {
+ xe = xis->here;
+ name_offset = le16_to_cpu(xe->xe_name_offset);
+ name_len = OCFS2_XATTR_SIZE(xe->xe_name_len);
+ base = xis->base;
+ vb.vb_bh = xis->inode_bh;
+ vb.vb_access = ocfs2_journal_access_di;
+ } else {
+ 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);
+ name_len = OCFS2_XATTR_SIZE(xe->xe_name_len);
+ i = xbs->here - xbs->header->xh_entries;
+
+ if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED) {
+ ret = ocfs2_xattr_bucket_get_name_value(inode->i_sb,
+ bucket_xh(xbs->bucket),
+ i, &block_off,
+ &name_offset);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ base = bucket_block(xbs->bucket, block_off);
+ vb.vb_bh = xbs->bucket->bu_bhs[block_off];
+ vb.vb_access = ocfs2_journal_access;
+
+ if (ocfs2_meta_ecc(osb)) {
+ /*create parameters for ocfs2_post_refcount. */
+ bucket = xbs->bucket;
+ refcount.credits = bucket->bu_blocks;
+ refcount.para = bucket;
+ refcount.func =
+ ocfs2_xattr_bucket_post_refcount;
+ p = &refcount;
+ }
+ } else {
+ base = xbs->base;
+ vb.vb_bh = xbs->xattr_bh;
+ vb.vb_access = ocfs2_journal_access_xb;
+ }
+ }
+
+ if (ocfs2_xattr_is_local(xe))
+ goto out;
+
+ vb.vb_xv = (struct ocfs2_xattr_value_root *)
+ (base + name_offset + name_len);
+
+ ret = ocfs2_xattr_get_clusters(inode, 0, &p_cluster,
+ &num_clusters, &vb.vb_xv->xr_list,
+ &ext_flags);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * We just need to check the 1st extent record, since we always
+ * CoW the whole xattr. So there shouldn't be a xattr with
+ * some REFCOUNT extent recs after the 1st one.
+ */
+ if (!(ext_flags & OCFS2_EXT_REFCOUNTED))
+ goto out;
+
+ ret = ocfs2_lock_refcount_tree(osb, le64_to_cpu(di->i_refcount_loc),
+ 1, ref_tree, &ref_root_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * If we are deleting the xattr or the new size will be stored inside,
+ * cool, leave it there, the xattr truncate process will remove them
+ * for us(it still needs the refcount tree lock and the meta, credits).
+ * And the worse case is that every cluster truncate will split the
+ * refcount tree, and make the original extent become 3. So we will need
+ * 2 * cluster more extent recs at most.
+ */
+ if (!xi->value || xi->value_len <= OCFS2_XATTR_INLINE_SIZE) {
+
+ ret = ocfs2_refcounted_xattr_delete_need(inode,
+ &(*ref_tree)->rf_ci,
+ ref_root_bh, vb.vb_xv,
+ meta_add, credits);
+ if (ret)
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_refcount_cow_xattr(inode, di, &vb,
+ *ref_tree, ref_root_bh, 0,
+ le32_to_cpu(vb.vb_xv->xr_clusters), p);
+ if (ret)
+ mlog_errno(ret);
+
+out:
+ brelse(ref_root_bh);
+ return ret;
+}
+
+/*
+ * Add the REFCOUNTED flags for all the extent rec in ocfs2_xattr_value_root.
+ * The physical clusters will be added to refcount tree.
+ */
+static int ocfs2_xattr_value_attach_refcount(struct inode *inode,
+ struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_extent_tree *value_et,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh,
+ struct ocfs2_cached_dealloc_ctxt *dealloc,
+ struct ocfs2_post_refcount *refcount)
+{
+ int ret = 0;
+ u32 clusters = le32_to_cpu(xv->xr_clusters);
+ u32 cpos, p_cluster, num_clusters;
+ struct ocfs2_extent_list *el = &xv->xr_list;
+ unsigned int ext_flags;
+
+ cpos = 0;
+ while (cpos < clusters) {
+ ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
+ &num_clusters, el, &ext_flags);
+
+ cpos += num_clusters;
+ if ((ext_flags & OCFS2_EXT_REFCOUNTED))
+ continue;
+
+ BUG_ON(!p_cluster);
+
+ ret = ocfs2_add_refcount_flag(inode, value_et,
+ ref_ci, ref_root_bh,
+ cpos - num_clusters,
+ p_cluster, num_clusters,
+ dealloc, refcount);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+/*
+ * Given a normal ocfs2_xattr_header, refcount all the entries which
+ * have value stored outside.
+ * Used for xattrs stored in inode and ocfs2_xattr_block.
+ */
+static int ocfs2_xattr_attach_refcount_normal(struct inode *inode,
+ struct ocfs2_xattr_value_buf *vb,
+ struct ocfs2_xattr_header *header,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh,
+ struct ocfs2_cached_dealloc_ctxt *dealloc)
+{
+
+ struct ocfs2_xattr_entry *xe;
+ struct ocfs2_xattr_value_root *xv;
+ struct ocfs2_extent_tree et;
+ int i, ret = 0;
+
+ for (i = 0; i < le16_to_cpu(header->xh_count); i++) {
+ xe = &header->xh_entries[i];
+
+ if (ocfs2_xattr_is_local(xe))
+ continue;
+
+ xv = (struct ocfs2_xattr_value_root *)((void *)header +
+ le16_to_cpu(xe->xe_name_offset) +
+ OCFS2_XATTR_SIZE(xe->xe_name_len));
+
+ vb->vb_xv = xv;
+ ocfs2_init_xattr_value_extent_tree(&et, INODE_CACHE(inode), vb);
+
+ ret = ocfs2_xattr_value_attach_refcount(inode, xv, &et,
+ ref_ci, ref_root_bh,
+ dealloc, NULL);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static int ocfs2_xattr_inline_attach_refcount(struct inode *inode,
+ struct buffer_head *fe_bh,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh,
+ struct ocfs2_cached_dealloc_ctxt *dealloc)
+{
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data;
+ struct ocfs2_xattr_header *header = (struct ocfs2_xattr_header *)
+ (fe_bh->b_data + inode->i_sb->s_blocksize -
+ le16_to_cpu(di->i_xattr_inline_size));
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = fe_bh,
+ .vb_access = ocfs2_journal_access_di,
+ };
+
+ return ocfs2_xattr_attach_refcount_normal(inode, &vb, header,
+ ref_ci, ref_root_bh, dealloc);
+}
+
+struct ocfs2_xattr_tree_value_refcount_para {
+ struct ocfs2_caching_info *ref_ci;
+ struct buffer_head *ref_root_bh;
+ struct ocfs2_cached_dealloc_ctxt *dealloc;
+};
+
+static int ocfs2_get_xattr_tree_value_root(struct super_block *sb,
+ struct ocfs2_xattr_bucket *bucket,
+ int offset,
+ struct ocfs2_xattr_value_root **xv,
+ struct buffer_head **bh)
+{
+ int ret, block_off, name_offset;
+ struct ocfs2_xattr_header *xh = bucket_xh(bucket);
+ struct ocfs2_xattr_entry *xe = &xh->xh_entries[offset];
+ void *base;
+
+ ret = ocfs2_xattr_bucket_get_name_value(sb,
+ bucket_xh(bucket),
+ offset,
+ &block_off,
+ &name_offset);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ base = bucket_block(bucket, block_off);
+
+ *xv = (struct ocfs2_xattr_value_root *)(base + name_offset +
+ OCFS2_XATTR_SIZE(xe->xe_name_len));
+
+ if (bh)
+ *bh = bucket->bu_bhs[block_off];
+out:
+ return ret;
+}
+
+/*
+ * For a given xattr bucket, refcount all the entries which
+ * have value stored outside.
+ */
+static int ocfs2_xattr_bucket_value_refcount(struct inode *inode,
+ struct ocfs2_xattr_bucket *bucket,
+ void *para)
+{
+ int i, ret = 0;
+ struct ocfs2_extent_tree et;
+ struct ocfs2_xattr_tree_value_refcount_para *ref =
+ (struct ocfs2_xattr_tree_value_refcount_para *)para;
+ struct ocfs2_xattr_header *xh =
+ (struct ocfs2_xattr_header *)bucket->bu_bhs[0]->b_data;
+ struct ocfs2_xattr_entry *xe;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_access = ocfs2_journal_access,
+ };
+ struct ocfs2_post_refcount refcount = {
+ .credits = bucket->bu_blocks,
+ .para = bucket,
+ .func = ocfs2_xattr_bucket_post_refcount,
+ };
+ struct ocfs2_post_refcount *p = NULL;
+
+ /* We only need post_refcount if we support metaecc. */
+ if (ocfs2_meta_ecc(OCFS2_SB(inode->i_sb)))
+ p = &refcount;
+
+ mlog(0, "refcount bucket %llu, count = %u\n",
+ (unsigned long long)bucket_blkno(bucket),
+ le16_to_cpu(xh->xh_count));
+ 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_get_xattr_tree_value_root(inode->i_sb, bucket, i,
+ &vb.vb_xv, &vb.vb_bh);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ ocfs2_init_xattr_value_extent_tree(&et,
+ INODE_CACHE(inode), &vb);
+
+ ret = ocfs2_xattr_value_attach_refcount(inode, vb.vb_xv,
+ &et, ref->ref_ci,
+ ref->ref_root_bh,
+ ref->dealloc, p);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+ }
+
+ return ret;
+
+}
+
+static int ocfs2_refcount_xattr_tree_rec(struct inode *inode,
+ struct buffer_head *root_bh,
+ u64 blkno, u32 cpos, u32 len, void *para)
+{
+ return ocfs2_iterate_xattr_buckets(inode, blkno, len,
+ ocfs2_xattr_bucket_value_refcount,
+ para);
+}
+
+static int ocfs2_xattr_block_attach_refcount(struct inode *inode,
+ struct buffer_head *blk_bh,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh,
+ struct ocfs2_cached_dealloc_ctxt *dealloc)
+{
+ int ret = 0;
+ struct ocfs2_xattr_block *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;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = blk_bh,
+ .vb_access = ocfs2_journal_access_xb,
+ };
+
+ ret = ocfs2_xattr_attach_refcount_normal(inode, &vb, header,
+ ref_ci, ref_root_bh,
+ dealloc);
+ } else {
+ struct ocfs2_xattr_tree_value_refcount_para para = {
+ .ref_ci = ref_ci,
+ .ref_root_bh = ref_root_bh,
+ .dealloc = dealloc,
+ };
+
+ ret = ocfs2_iterate_xattr_index_block(inode, blk_bh,
+ ocfs2_refcount_xattr_tree_rec,
+ ¶);
+ }
+
+ return ret;
+}
+
+int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
+ struct buffer_head *fe_bh,
+ struct ocfs2_caching_info *ref_ci,
+ struct buffer_head *ref_root_bh,
+ struct ocfs2_cached_dealloc_ctxt *dealloc)
+{
+ int ret = 0;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data;
+ struct buffer_head *blk_bh = NULL;
+
+ if (oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL) {
+ ret = ocfs2_xattr_inline_attach_refcount(inode, fe_bh,
+ ref_ci, ref_root_bh,
+ dealloc);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ if (!di->i_xattr_loc)
+ goto out;
+
+ ret = ocfs2_read_xattr_block(inode, le64_to_cpu(di->i_xattr_loc),
+ &blk_bh);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_xattr_block_attach_refcount(inode, blk_bh, ref_ci,
+ ref_root_bh, dealloc);
+ if (ret)
+ mlog_errno(ret);
+
+ brelse(blk_bh);
+out:
+
+ return ret;
+}
+
+typedef int (should_xattr_reflinked)(struct ocfs2_xattr_entry *xe);
+/*
+ * Store the information we need in xattr reflink.
+ * old_bh and new_bh are inode bh for the old and new inode.
+ */
+struct ocfs2_xattr_reflink {
+ struct inode *old_inode;
+ struct inode *new_inode;
+ struct buffer_head *old_bh;
+ struct buffer_head *new_bh;
+ struct ocfs2_caching_info *ref_ci;
+ struct buffer_head *ref_root_bh;
+ struct ocfs2_cached_dealloc_ctxt *dealloc;
+ should_xattr_reflinked *xattr_reflinked;
+};
+
+/*
+ * Given a xattr header and xe offset,
+ * return the proper xv and the corresponding bh.
+ * xattr in inode, block and xattr tree have different implementaions.
+ */
+typedef int (get_xattr_value_root)(struct super_block *sb,
+ struct buffer_head *bh,
+ struct ocfs2_xattr_header *xh,
+ int offset,
+ struct ocfs2_xattr_value_root **xv,
+ struct buffer_head **ret_bh,
+ void *para);
+
+/*
+ * Calculate all the xattr value root metadata stored in this xattr header and
+ * credits we need if we create them from the scratch.
+ * We use get_xattr_value_root so that all types of xattr container can use it.
+ */
+static int ocfs2_value_metas_in_xattr_header(struct super_block *sb,
+ struct buffer_head *bh,
+ struct ocfs2_xattr_header *xh,
+ int *metas, int *credits,
+ int *num_recs,
+ get_xattr_value_root *func,
+ void *para)
+{
+ int i, ret = 0;
+ struct ocfs2_xattr_value_root *xv;
+ struct ocfs2_xattr_entry *xe;
+
+ for (i = 0; i < le16_to_cpu(xh->xh_count); i++) {
+ xe = &xh->xh_entries[i];
+ if (ocfs2_xattr_is_local(xe))
+ continue;
+
+ ret = func(sb, bh, xh, i, &xv, NULL, para);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ *metas += le16_to_cpu(xv->xr_list.l_tree_depth) *
+ le16_to_cpu(xv->xr_list.l_next_free_rec);
+
+ *credits += ocfs2_calc_extend_credits(sb,
+ &def_xv.xv.xr_list,
+ le32_to_cpu(xv->xr_clusters));
+
+ /*
+ * If the value is a tree with depth > 1, We don't go deep
+ * to the extent block, so just calculate a maximum record num.
+ */
+ if (!xv->xr_list.l_tree_depth)
+ *num_recs += le16_to_cpu(xv->xr_list.l_next_free_rec);
+ else
+ *num_recs += ocfs2_clusters_for_bytes(sb,
+ XATTR_SIZE_MAX);
+ }
+
+ return ret;
+}
+
+/* Used by xattr inode and block to return the right xv and buffer_head. */
+static int ocfs2_get_xattr_value_root(struct super_block *sb,
+ struct buffer_head *bh,
+ struct ocfs2_xattr_header *xh,
+ int offset,
+ struct ocfs2_xattr_value_root **xv,
+ struct buffer_head **ret_bh,
+ void *para)
+{
+ struct ocfs2_xattr_entry *xe = &xh->xh_entries[offset];
+
+ *xv = (struct ocfs2_xattr_value_root *)((void *)xh +
+ le16_to_cpu(xe->xe_name_offset) +
+ OCFS2_XATTR_SIZE(xe->xe_name_len));
+
+ if (ret_bh)
+ *ret_bh = bh;
+
+ return 0;
+}
+
+/*
+ * Lock the meta_ac and caculate how much credits we need for reflink xattrs.
+ * It is only used for inline xattr and xattr block.
+ */
+static int ocfs2_reflink_lock_xattr_allocators(struct ocfs2_super *osb,
+ struct ocfs2_xattr_header *xh,
+ struct buffer_head *ref_root_bh,
+ int *credits,
+ struct ocfs2_alloc_context **meta_ac)
+{
+ int ret, meta_add = 0, num_recs = 0;
+ struct ocfs2_refcount_block *rb =
+ (struct ocfs2_refcount_block *)ref_root_bh->b_data;
+
+ *credits = 0;
+
+ ret = ocfs2_value_metas_in_xattr_header(osb->sb, NULL, xh,
+ &meta_add, credits, &num_recs,
+ ocfs2_get_xattr_value_root,
+ NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * We need to add/modify num_recs in refcount tree, so just calculate
+ * an approximate number we need for refcount tree change.
+ * Sometimes we need to split the tree, and after split, half recs
+ * will be moved to the new block, and a new block can only provide
+ * half number of recs. So we multiple new blocks by 2.
+ */
+ num_recs = num_recs / ocfs2_refcount_recs_per_rb(osb->sb) * 2;
+ meta_add += num_recs;
+ *credits += num_recs + num_recs * OCFS2_EXPAND_REFCOUNT_TREE_CREDITS;
+ if (le32_to_cpu(rb->rf_flags) & OCFS2_REFCOUNT_TREE_FL)
+ *credits += le16_to_cpu(rb->rf_list.l_tree_depth) *
+ le16_to_cpu(rb->rf_list.l_next_free_rec) + 1;
+ else
+ *credits += 1;
+
+ ret = ocfs2_reserve_new_metadata_blocks(osb, meta_add, meta_ac);
+ if (ret)
+ mlog_errno(ret);
+
+out:
+ return ret;
+}
+
+/*
+ * Given a xattr header, reflink all the xattrs in this container.
+ * It can be used for inode, block and bucket.
+ *
+ * NOTE:
+ * Before we call this function, the caller has memcpy the xattr in
+ * old_xh to the new_xh.
+ *
+ * If args.xattr_reflinked is set, call it to decide whether the xe should
+ * be reflinked or not. If not, remove it from the new xattr header.
+ */
+static int ocfs2_reflink_xattr_header(handle_t *handle,
+ struct ocfs2_xattr_reflink *args,
+ struct buffer_head *old_bh,
+ struct ocfs2_xattr_header *xh,
+ struct buffer_head *new_bh,
+ struct ocfs2_xattr_header *new_xh,
+ struct ocfs2_xattr_value_buf *vb,
+ struct ocfs2_alloc_context *meta_ac,
+ get_xattr_value_root *func,
+ void *para)
+{
+ int ret = 0, i, j;
+ struct super_block *sb = args->old_inode->i_sb;
+ struct buffer_head *value_bh;
+ struct ocfs2_xattr_entry *xe, *last;
+ struct ocfs2_xattr_value_root *xv, *new_xv;
+ struct ocfs2_extent_tree data_et;
+ u32 clusters, cpos, p_cluster, num_clusters;
+ unsigned int ext_flags = 0;
+
+ mlog(0, "reflink xattr in container %llu, count = %u\n",
+ (unsigned long long)old_bh->b_blocknr, le16_to_cpu(xh->xh_count));
+
+ last = &new_xh->xh_entries[le16_to_cpu(new_xh->xh_count)];
+ for (i = 0, j = 0; i < le16_to_cpu(xh->xh_count); i++, j++) {
+ xe = &xh->xh_entries[i];
+
+ if (args->xattr_reflinked && !args->xattr_reflinked(xe)) {
+ xe = &new_xh->xh_entries[j];
+
+ le16_add_cpu(&new_xh->xh_count, -1);
+ if (new_xh->xh_count) {
+ memmove(xe, xe + 1,
+ (void *)last - (void *)xe);
+ memset(last, 0,
+ sizeof(struct ocfs2_xattr_entry));
+ }
+
+ /*
+ * We don't want j to increase in the next round since
+ * it is already moved ahead.
+ */
+ j--;
+ continue;
+ }
+
+ if (ocfs2_xattr_is_local(xe))
+ continue;
+
+ ret = func(sb, old_bh, xh, i, &xv, NULL, para);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = func(sb, new_bh, new_xh, j, &new_xv, &value_bh, para);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ /*
+ * For the xattr which has l_tree_depth = 0, all the extent
+ * recs have already be copied to the new xh with the
+ * propriate OCFS2_EXT_REFCOUNTED flag we just need to
+ * increase the refount count int the refcount tree.
+ *
+ * For the xattr which has l_tree_depth > 0, we need
+ * to initialize it to the empty default value root,
+ * and then insert the extents one by one.
+ */
+ if (xv->xr_list.l_tree_depth) {
+ memcpy(new_xv, &def_xv, sizeof(def_xv));
+ vb->vb_xv = new_xv;
+ vb->vb_bh = value_bh;
+ ocfs2_init_xattr_value_extent_tree(&data_et,
+ INODE_CACHE(args->new_inode), vb);
+ }
+
+ clusters = le32_to_cpu(xv->xr_clusters);
+ cpos = 0;
+ while (cpos < clusters) {
+ ret = ocfs2_xattr_get_clusters(args->old_inode,
+ cpos,
+ &p_cluster,
+ &num_clusters,
+ &xv->xr_list,
+ &ext_flags);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ BUG_ON(!p_cluster);
+
+ if (xv->xr_list.l_tree_depth) {
+ ret = ocfs2_insert_extent(handle,
+ &data_et, cpos,
+ ocfs2_clusters_to_blocks(
+ args->old_inode->i_sb,
+ p_cluster),
+ num_clusters, ext_flags,
+ meta_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ ret = ocfs2_increase_refcount(handle, args->ref_ci,
+ args->ref_root_bh,
+ p_cluster, num_clusters,
+ meta_ac, args->dealloc);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ cpos += num_clusters;
+ }
+ }
+
+out:
+ return ret;
+}
+
+static int ocfs2_reflink_xattr_inline(struct ocfs2_xattr_reflink *args)
+{
+ int ret = 0, credits = 0;
+ handle_t *handle;
+ struct ocfs2_super *osb = OCFS2_SB(args->old_inode->i_sb);
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)args->old_bh->b_data;
+ int inline_size = le16_to_cpu(di->i_xattr_inline_size);
+ int header_off = osb->sb->s_blocksize - inline_size;
+ struct ocfs2_xattr_header *xh = (struct ocfs2_xattr_header *)
+ (args->old_bh->b_data + header_off);
+ struct ocfs2_xattr_header *new_xh = (struct ocfs2_xattr_header *)
+ (args->new_bh->b_data + header_off);
+ struct ocfs2_alloc_context *meta_ac = NULL;
+ struct ocfs2_inode_info *new_oi;
+ struct ocfs2_dinode *new_di;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = args->new_bh,
+ .vb_access = ocfs2_journal_access_di,
+ };
+
+ ret = ocfs2_reflink_lock_xattr_allocators(osb, xh, args->ref_root_bh,
+ &credits, &meta_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_journal_access_di(handle, INODE_CACHE(args->new_inode),
+ args->new_bh, OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ memcpy(args->new_bh->b_data + header_off,
+ args->old_bh->b_data + header_off, inline_size);
+
+ new_di = (struct ocfs2_dinode *)args->new_bh->b_data;
+ new_di->i_xattr_inline_size = cpu_to_le16(inline_size);
+
+ ret = ocfs2_reflink_xattr_header(handle, args, args->old_bh, xh,
+ args->new_bh, new_xh, &vb, meta_ac,
+ ocfs2_get_xattr_value_root, NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ new_oi = OCFS2_I(args->new_inode);
+ spin_lock(&new_oi->ip_lock);
+ new_oi->ip_dyn_features |= OCFS2_HAS_XATTR_FL | OCFS2_INLINE_XATTR_FL;
+ new_di->i_dyn_features = cpu_to_le16(new_oi->ip_dyn_features);
+ spin_unlock(&new_oi->ip_lock);
+
+ ocfs2_journal_dirty(handle, args->new_bh);
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+
+out:
+ if (meta_ac)
+ ocfs2_free_alloc_context(meta_ac);
+ return ret;
+}
+
+static int ocfs2_create_empty_xattr_block(struct inode *inode,
+ struct buffer_head *fe_bh,
+ struct buffer_head **ret_bh,
+ int indexed)
+{
+ int ret;
+ handle_t *handle;
+ struct ocfs2_alloc_context *meta_ac;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+
+ ret = ocfs2_reserve_new_metadata_blocks(osb, 1, &meta_ac);
+ if (ret < 0) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ handle = ocfs2_start_trans(osb, OCFS2_XATTR_BLOCK_CREATE_CREDITS);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ mlog(0, "create new xattr block for inode %llu, index = %d\n",
+ (unsigned long long)fe_bh->b_blocknr, indexed);
+ ret = ocfs2_create_xattr_block(handle, inode, fe_bh,
+ meta_ac, ret_bh, indexed);
+ if (ret)
+ mlog_errno(ret);
+
+ ocfs2_commit_trans(osb, handle);
+out:
+ ocfs2_free_alloc_context(meta_ac);
+ return ret;
+}
+
+static int ocfs2_reflink_xattr_block(struct ocfs2_xattr_reflink *args,
+ struct buffer_head *blk_bh,
+ struct buffer_head *new_blk_bh)
+{
+ int ret = 0, credits = 0;
+ handle_t *handle;
+ struct ocfs2_inode_info *new_oi = OCFS2_I(args->new_inode);
+ struct ocfs2_dinode *new_di;
+ struct ocfs2_super *osb = OCFS2_SB(args->new_inode->i_sb);
+ int header_off = offsetof(struct ocfs2_xattr_block, xb_attrs.xb_header);
+ struct ocfs2_xattr_block *xb =
+ (struct ocfs2_xattr_block *)blk_bh->b_data;
+ struct ocfs2_xattr_header *xh = &xb->xb_attrs.xb_header;
+ struct ocfs2_xattr_block *new_xb =
+ (struct ocfs2_xattr_block *)new_blk_bh->b_data;
+ struct ocfs2_xattr_header *new_xh = &new_xb->xb_attrs.xb_header;
+ struct ocfs2_alloc_context *meta_ac;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = new_blk_bh,
+ .vb_access = ocfs2_journal_access_xb,
+ };
+
+ ret = ocfs2_reflink_lock_xattr_allocators(osb, xh, args->ref_root_bh,
+ &credits, &meta_ac);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ /* One more credits in case we need to add xattr flags in new inode. */
+ handle = ocfs2_start_trans(osb, credits + 1);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (!(new_oi->ip_dyn_features & OCFS2_HAS_XATTR_FL)) {
+ ret = ocfs2_journal_access_di(handle,
+ INODE_CACHE(args->new_inode),
+ args->new_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+ }
+
+ ret = ocfs2_journal_access_xb(handle, INODE_CACHE(args->new_inode),
+ new_blk_bh, OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ memcpy(new_blk_bh->b_data + header_off, blk_bh->b_data + header_off,
+ osb->sb->s_blocksize - header_off);
+
+ ret = ocfs2_reflink_xattr_header(handle, args, blk_bh, xh,
+ new_blk_bh, new_xh, &vb, meta_ac,
+ ocfs2_get_xattr_value_root, NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ ocfs2_journal_dirty(handle, new_blk_bh);
+
+ if (!(new_oi->ip_dyn_features & OCFS2_HAS_XATTR_FL)) {
+ new_di = (struct ocfs2_dinode *)args->new_bh->b_data;
+ spin_lock(&new_oi->ip_lock);
+ new_oi->ip_dyn_features |= OCFS2_HAS_XATTR_FL;
+ new_di->i_dyn_features = cpu_to_le16(new_oi->ip_dyn_features);
+ spin_unlock(&new_oi->ip_lock);
+
+ ocfs2_journal_dirty(handle, args->new_bh);
+ }
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+
+out:
+ ocfs2_free_alloc_context(meta_ac);
+ return ret;
+}
+
+struct ocfs2_reflink_xattr_tree_args {
+ struct ocfs2_xattr_reflink *reflink;
+ struct buffer_head *old_blk_bh;
+ struct buffer_head *new_blk_bh;
+ struct ocfs2_xattr_bucket *old_bucket;
+ struct ocfs2_xattr_bucket *new_bucket;
+};
+
+/*
+ * NOTE:
+ * We have to handle the case that both old bucket and new bucket
+ * will call this function to get the right ret_bh.
+ * So The caller must give us the right bh.
+ */
+static int ocfs2_get_reflink_xattr_value_root(struct super_block *sb,
+ struct buffer_head *bh,
+ struct ocfs2_xattr_header *xh,
+ int offset,
+ struct ocfs2_xattr_value_root **xv,
+ struct buffer_head **ret_bh,
+ void *para)
+{
+ struct ocfs2_reflink_xattr_tree_args *args =
+ (struct ocfs2_reflink_xattr_tree_args *)para;
+ struct ocfs2_xattr_bucket *bucket;
+
+ if (bh == args->old_bucket->bu_bhs[0])
+ bucket = args->old_bucket;
+ else
+ bucket = args->new_bucket;
+
+ return ocfs2_get_xattr_tree_value_root(sb, bucket, offset,
+ xv, ret_bh);
+}
+
+struct ocfs2_value_tree_metas {
+ int num_metas;
+ int credits;
+ int num_recs;
+};
+
+static int ocfs2_value_tree_metas_in_bucket(struct super_block *sb,
+ struct buffer_head *bh,
+ struct ocfs2_xattr_header *xh,
+ int offset,
+ struct ocfs2_xattr_value_root **xv,
+ struct buffer_head **ret_bh,
+ void *para)
+{
+ struct ocfs2_xattr_bucket *bucket =
+ (struct ocfs2_xattr_bucket *)para;
+
+ return ocfs2_get_xattr_tree_value_root(sb, bucket, offset,
+ xv, ret_bh);
+}
+
+static int ocfs2_calc_value_tree_metas(struct inode *inode,
+ struct ocfs2_xattr_bucket *bucket,
+ void *para)
+{
+ struct ocfs2_value_tree_metas *metas =
+ (struct ocfs2_value_tree_metas *)para;
+ struct ocfs2_xattr_header *xh =
+ (struct ocfs2_xattr_header *)bucket->bu_bhs[0]->b_data;
+
+ /* Add the credits for this bucket first. */
+ metas->credits += bucket->bu_blocks;
+ return ocfs2_value_metas_in_xattr_header(inode->i_sb, bucket->bu_bhs[0],
+ xh, &metas->num_metas,
+ &metas->credits, &metas->num_recs,
+ ocfs2_value_tree_metas_in_bucket,
+ bucket);
+}
+
+/*
+ * Given a xattr extent rec starting from blkno and having len clusters,
+ * iterate all the buckets calculate how much metadata we need for reflinking
+ * all the ocfs2_xattr_value_root and lock the allocators accordingly.
+ */
+static int ocfs2_lock_reflink_xattr_rec_allocators(
+ struct ocfs2_reflink_xattr_tree_args *args,
+ struct ocfs2_extent_tree *xt_et,
+ u64 blkno, u32 len, int *credits,
+ struct ocfs2_alloc_context **meta_ac,
+ struct ocfs2_alloc_context **data_ac)
+{
+ int ret, num_free_extents;
+ struct ocfs2_value_tree_metas metas;
+ struct ocfs2_super *osb = OCFS2_SB(args->reflink->old_inode->i_sb);
+ struct ocfs2_refcount_block *rb;
+
+ memset(&metas, 0, sizeof(metas));
+
+ ret = ocfs2_iterate_xattr_buckets(args->reflink->old_inode, blkno, len,
+ ocfs2_calc_value_tree_metas, &metas);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ *credits = metas.credits;
+
+ /*
+ * Calculate we need for refcount tree change.
+ *
+ * We need to add/modify num_recs in refcount tree, so just calculate
+ * an approximate number we need for refcount tree change.
+ * Sometimes we need to split the tree, and after split, half recs
+ * will be moved to the new block, and a new block can only provide
+ * half number of recs. So we multiple new blocks by 2.
+ * In the end, we have to add credits for modifying the already
+ * existed refcount block.
+ */
+ rb = (struct ocfs2_refcount_block *)args->reflink->ref_root_bh->b_data;
+ metas.num_recs =
+ (metas.num_recs + ocfs2_refcount_recs_per_rb(osb->sb) - 1) /
+ ocfs2_refcount_recs_per_rb(osb->sb) * 2;
+ metas.num_metas += metas.num_recs;
+ *credits += metas.num_recs +
+ metas.num_recs * OCFS2_EXPAND_REFCOUNT_TREE_CREDITS;
+ if (le32_to_cpu(rb->rf_flags) & OCFS2_REFCOUNT_TREE_FL)
+ *credits += le16_to_cpu(rb->rf_list.l_tree_depth) *
+ le16_to_cpu(rb->rf_list.l_next_free_rec) + 1;
+ else
+ *credits += 1;
+
+ /* count in the xattr tree change. */
+ num_free_extents = ocfs2_num_free_extents(osb, xt_et);
+ if (num_free_extents < 0) {
+ ret = num_free_extents;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (num_free_extents < len)
+ metas.num_metas += ocfs2_extend_meta_needed(xt_et->et_root_el);
+
+ *credits += ocfs2_calc_extend_credits(osb->sb,
+ xt_et->et_root_el, len);
+
+ if (metas.num_metas) {
+ ret = ocfs2_reserve_new_metadata_blocks(osb, metas.num_metas,
+ meta_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ if (len) {
+ ret = ocfs2_reserve_clusters(osb, len, data_ac);
+ if (ret)
+ mlog_errno(ret);
+ }
+out:
+ if (ret) {
+ if (*meta_ac) {
+ ocfs2_free_alloc_context(*meta_ac);
+ meta_ac = NULL;
+ }
+ }
+
+ return ret;
+}
+
+static int ocfs2_reflink_xattr_buckets(handle_t *handle,
+ u64 blkno, u64 new_blkno, u32 clusters,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac,
+ struct ocfs2_reflink_xattr_tree_args *args)
+{
+ int i, j, ret = 0;
+ struct super_block *sb = args->reflink->old_inode->i_sb;
+ u32 bpc = ocfs2_xattr_buckets_per_cluster(OCFS2_SB(sb));
+ u32 num_buckets = clusters * bpc;
+ int bpb = args->old_bucket->bu_blocks;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_access = ocfs2_journal_access,
+ };
+
+ for (i = 0; i < num_buckets; i++, blkno += bpb, new_blkno += bpb) {
+ ret = ocfs2_read_xattr_bucket(args->old_bucket, blkno);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = ocfs2_init_xattr_bucket(args->new_bucket, new_blkno);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ /*
+ * The real bucket num in this series of blocks is stored
+ * in the 1st bucket.
+ */
+ if (i == 0)
+ num_buckets = le16_to_cpu(
+ bucket_xh(args->old_bucket)->xh_num_buckets);
+
+ ret = ocfs2_xattr_bucket_journal_access(handle,
+ args->new_bucket,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ for (j = 0; j < bpb; j++)
+ memcpy(bucket_block(args->new_bucket, j),
+ bucket_block(args->old_bucket, j),
+ sb->s_blocksize);
+
+ ocfs2_xattr_bucket_journal_dirty(handle, args->new_bucket);
+
+ ret = ocfs2_reflink_xattr_header(handle, args->reflink,
+ args->old_bucket->bu_bhs[0],
+ bucket_xh(args->old_bucket),
+ args->new_bucket->bu_bhs[0],
+ bucket_xh(args->new_bucket),
+ &vb, meta_ac,
+ ocfs2_get_reflink_xattr_value_root,
+ args);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ /*
+ * Re-access and dirty the bucket to calculate metaecc.
+ * Because we may extend the transaction in reflink_xattr_header
+ * which will let the already accessed block gone.
+ */
+ ret = ocfs2_xattr_bucket_journal_access(handle,
+ args->new_bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ break;
+ }
+
+ ocfs2_xattr_bucket_journal_dirty(handle, args->new_bucket);
+ ocfs2_xattr_bucket_relse(args->old_bucket);
+ ocfs2_xattr_bucket_relse(args->new_bucket);
+ }
+
+ ocfs2_xattr_bucket_relse(args->old_bucket);
+ ocfs2_xattr_bucket_relse(args->new_bucket);
+ return ret;
+}
+/*
+ * Create the same xattr extent record in the new inode's xattr tree.
+ */
+static int ocfs2_reflink_xattr_rec(struct inode *inode,
+ struct buffer_head *root_bh,
+ u64 blkno,
+ u32 cpos,
+ u32 len,
+ void *para)
+{
+ int ret, credits = 0;
+ u32 p_cluster, num_clusters;
+ u64 new_blkno;
+ handle_t *handle;
+ struct ocfs2_reflink_xattr_tree_args *args =
+ (struct ocfs2_reflink_xattr_tree_args *)para;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct ocfs2_alloc_context *meta_ac = NULL;
+ struct ocfs2_alloc_context *data_ac = NULL;
+ struct ocfs2_extent_tree et;
+
+ ocfs2_init_xattr_tree_extent_tree(&et,
+ INODE_CACHE(args->reflink->new_inode),
+ args->new_blk_bh);
+
+ ret = ocfs2_lock_reflink_xattr_rec_allocators(args, &et, blkno,
+ len, &credits,
+ &meta_ac, &data_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_claim_clusters(osb, handle, data_ac,
+ len, &p_cluster, &num_clusters);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ new_blkno = ocfs2_clusters_to_blocks(osb->sb, p_cluster);
+
+ mlog(0, "reflink xattr buckets %llu to %llu, len %u\n",
+ (unsigned long long)blkno, (unsigned long long)new_blkno, len);
+ ret = ocfs2_reflink_xattr_buckets(handle, blkno, new_blkno, len,
+ meta_ac, data_ac, args);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ mlog(0, "insert new xattr extent rec start %llu len %u to %u\n",
+ (unsigned long long)new_blkno, len, cpos);
+ ret = ocfs2_insert_extent(handle, &et, cpos, new_blkno,
+ len, 0, meta_ac);
+ if (ret)
+ mlog_errno(ret);
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+
+out:
+ if (meta_ac)
+ ocfs2_free_alloc_context(meta_ac);
+ if (data_ac)
+ ocfs2_free_alloc_context(data_ac);
+ return ret;
+}
+
+/*
+ * Create reflinked xattr buckets.
+ * We will add bucket one by one, and refcount all the xattrs in the bucket
+ * if they are stored outside.
+ */
+static int ocfs2_reflink_xattr_tree(struct ocfs2_xattr_reflink *args,
+ struct buffer_head *blk_bh,
+ struct buffer_head *new_blk_bh)
+{
+ int ret;
+ struct ocfs2_reflink_xattr_tree_args para;
+
+ memset(¶, 0, sizeof(para));
+ para.reflink = args;
+ para.old_blk_bh = blk_bh;
+ para.new_blk_bh = new_blk_bh;
+
+ para.old_bucket = ocfs2_xattr_bucket_new(args->old_inode);
+ if (!para.old_bucket) {
+ mlog_errno(-ENOMEM);
+ return -ENOMEM;
+ }
+
+ para.new_bucket = ocfs2_xattr_bucket_new(args->new_inode);
+ if (!para.new_bucket) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_iterate_xattr_index_block(args->old_inode, blk_bh,
+ ocfs2_reflink_xattr_rec,
+ ¶);
+ if (ret)
+ mlog_errno(ret);
+
+out:
+ ocfs2_xattr_bucket_free(para.old_bucket);
+ ocfs2_xattr_bucket_free(para.new_bucket);
+ return ret;
+}
+
+static int ocfs2_reflink_xattr_in_block(struct ocfs2_xattr_reflink *args,
+ struct buffer_head *blk_bh)
+{
+ int ret, indexed = 0;
+ struct buffer_head *new_blk_bh = NULL;
+ struct ocfs2_xattr_block *xb =
+ (struct ocfs2_xattr_block *)blk_bh->b_data;
+
+
+ if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)
+ indexed = 1;
+
+ ret = ocfs2_create_empty_xattr_block(args->new_inode, args->new_bh,
+ &new_blk_bh, indexed);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED))
+ ret = ocfs2_reflink_xattr_block(args, blk_bh, new_blk_bh);
+ else
+ ret = ocfs2_reflink_xattr_tree(args, blk_bh, new_blk_bh);
+ if (ret)
+ mlog_errno(ret);
+
+out:
+ brelse(new_blk_bh);
+ return ret;
+}
+
+static int ocfs2_reflink_xattr_no_security(struct ocfs2_xattr_entry *xe)
+{
+ int type = ocfs2_xattr_get_type(xe);
+
+ return type != OCFS2_XATTR_INDEX_SECURITY &&
+ type != OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS &&
+ type != OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;
+}
+
+int ocfs2_reflink_xattrs(struct inode *old_inode,
+ struct buffer_head *old_bh,
+ struct inode *new_inode,
+ struct buffer_head *new_bh,
+ bool preserve_security)
+{
+ int ret;
+ struct ocfs2_xattr_reflink args;
+ struct ocfs2_inode_info *oi = OCFS2_I(old_inode);
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)old_bh->b_data;
+ struct buffer_head *blk_bh = NULL;
+ struct ocfs2_cached_dealloc_ctxt dealloc;
+ struct ocfs2_refcount_tree *ref_tree;
+ struct buffer_head *ref_root_bh = NULL;
+
+ ret = ocfs2_lock_refcount_tree(OCFS2_SB(old_inode->i_sb),
+ le64_to_cpu(di->i_refcount_loc),
+ 1, &ref_tree, &ref_root_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ocfs2_init_dealloc_ctxt(&dealloc);
+
+ args.old_inode = old_inode;
+ args.new_inode = new_inode;
+ args.old_bh = old_bh;
+ args.new_bh = new_bh;
+ args.ref_ci = &ref_tree->rf_ci;
+ args.ref_root_bh = ref_root_bh;
+ args.dealloc = &dealloc;
+ if (preserve_security)
+ args.xattr_reflinked = NULL;
+ else
+ args.xattr_reflinked = ocfs2_reflink_xattr_no_security;
+
+ if (oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL) {
+ ret = ocfs2_reflink_xattr_inline(&args);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_unlock;
+ }
+ }
+
+ if (!di->i_xattr_loc)
+ goto out_unlock;
+
+ ret = ocfs2_read_xattr_block(old_inode, le64_to_cpu(di->i_xattr_loc),
+ &blk_bh);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto out_unlock;
+ }
+
+ ret = ocfs2_reflink_xattr_in_block(&args, blk_bh);
+ if (ret)
+ mlog_errno(ret);
+
+ brelse(blk_bh);
+
+out_unlock:
+ ocfs2_unlock_refcount_tree(OCFS2_SB(old_inode->i_sb),
+ ref_tree, 1);
+ brelse(ref_root_bh);
+
+ if (ocfs2_dealloc_has_cluster(&dealloc)) {
+ ocfs2_schedule_truncate_log_flush(OCFS2_SB(old_inode->i_sb), 1);
+ ocfs2_run_deallocs(OCFS2_SB(old_inode->i_sb), &dealloc);
+ }
out:
return ret;
}
+/*
+ * Initialize security and acl for a already created inode.
+ * Used for reflink a non-preserve-security file.
+ *
+ * It uses common api like ocfs2_xattr_set, so the caller
+ * must not hold any lock expect i_mutex.
+ */
+int ocfs2_init_security_and_acl(struct inode *dir,
+ struct inode *inode)
+{
+ int ret = 0;
+ struct buffer_head *dir_bh = NULL;
+ struct ocfs2_security_xattr_info si = {
+ .enable = 1,
+ };
+
+ ret = ocfs2_init_security_get(inode, dir, &si);
+ if (!ret) {
+ ret = ocfs2_xattr_security_set(inode, si.name,
+ si.value, si.value_len,
+ XATTR_CREATE);
+ if (ret) {
+ mlog_errno(ret);
+ goto leave;
+ }
+ } else if (ret != -EOPNOTSUPP) {
+ mlog_errno(ret);
+ goto leave;
+ }
+
+ ret = ocfs2_inode_lock(dir, &dir_bh, 0);
+ if (ret) {
+ mlog_errno(ret);
+ goto leave;
+ }
+
+ ret = ocfs2_init_acl(NULL, inode, dir, NULL, dir_bh, NULL, NULL);
+ if (ret)
+ mlog_errno(ret);
+
+ ocfs2_inode_unlock(dir, 0);
+ brelse(dir_bh);
+leave:
+ return ret;
+}
/*
* 'security' attributes support
*/
git.samba.org / sfrench / cifs-2.6.git / blobdiff