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Diffstat (limited to 'fs/ocfs2/namei.c')
-rw-r--r--fs/ocfs2/namei.c150
1 files changed, 77 insertions, 73 deletions
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 4b11762f249e..d3a5a09d88ff 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -80,14 +80,14 @@ static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
struct inode **ret_orphan_dir,
struct inode *inode,
char *name,
- struct buffer_head **de_bh);
+ struct ocfs2_dir_lookup_result *lookup);
static int ocfs2_orphan_add(struct ocfs2_super *osb,
handle_t *handle,
struct inode *inode,
struct ocfs2_dinode *fe,
char *name,
- struct buffer_head *de_bh,
+ struct ocfs2_dir_lookup_result *lookup,
struct inode *orphan_dir_inode);
static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
@@ -228,7 +228,6 @@ static int ocfs2_mknod(struct inode *dir,
struct ocfs2_super *osb;
struct ocfs2_dinode *dirfe;
struct buffer_head *new_fe_bh = NULL;
- struct buffer_head *de_bh = NULL;
struct inode *inode = NULL;
struct ocfs2_alloc_context *inode_ac = NULL;
struct ocfs2_alloc_context *data_ac = NULL;
@@ -239,6 +238,7 @@ static int ocfs2_mknod(struct inode *dir,
.enable = 1,
};
int did_quota_inode = 0;
+ struct ocfs2_dir_lookup_result lookup = { NULL, };
mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
(unsigned long)dev, dentry->d_name.len,
@@ -274,7 +274,7 @@ static int ocfs2_mknod(struct inode *dir,
/* get a spot inside the dir. */
status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
dentry->d_name.name,
- dentry->d_name.len, &de_bh);
+ dentry->d_name.len, &lookup);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -394,7 +394,7 @@ static int ocfs2_mknod(struct inode *dir,
status = ocfs2_add_entry(handle, dentry, inode,
OCFS2_I(inode)->ip_blkno, parent_fe_bh,
- de_bh);
+ &lookup);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -423,11 +423,12 @@ leave:
mlog(0, "Disk is full\n");
brelse(new_fe_bh);
- brelse(de_bh);
brelse(parent_fe_bh);
kfree(si.name);
kfree(si.value);
+ ocfs2_free_dir_lookup_result(&lookup);
+
if ((status < 0) && inode) {
clear_nlink(inode);
iput(inode);
@@ -608,9 +609,9 @@ static int ocfs2_link(struct dentry *old_dentry,
int err;
struct buffer_head *fe_bh = NULL;
struct buffer_head *parent_fe_bh = NULL;
- struct buffer_head *de_bh = NULL;
struct ocfs2_dinode *fe = NULL;
struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+ struct ocfs2_dir_lookup_result lookup = { NULL, };
mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino,
old_dentry->d_name.len, old_dentry->d_name.name,
@@ -638,7 +639,7 @@ static int ocfs2_link(struct dentry *old_dentry,
err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
dentry->d_name.name,
- dentry->d_name.len, &de_bh);
+ dentry->d_name.len, &lookup);
if (err < 0) {
mlog_errno(err);
goto out;
@@ -688,7 +689,7 @@ static int ocfs2_link(struct dentry *old_dentry,
err = ocfs2_add_entry(handle, dentry, inode,
OCFS2_I(inode)->ip_blkno,
- parent_fe_bh, de_bh);
+ parent_fe_bh, &lookup);
if (err) {
le16_add_cpu(&fe->i_links_count, -1);
drop_nlink(inode);
@@ -714,10 +715,11 @@ out_unlock_inode:
out:
ocfs2_inode_unlock(dir, 1);
- brelse(de_bh);
brelse(fe_bh);
brelse(parent_fe_bh);
+ ocfs2_free_dir_lookup_result(&lookup);
+
mlog_exit(err);
return err;
@@ -766,10 +768,9 @@ static int ocfs2_unlink(struct inode *dir,
struct buffer_head *fe_bh = NULL;
struct buffer_head *parent_node_bh = NULL;
handle_t *handle = NULL;
- struct ocfs2_dir_entry *dirent = NULL;
- struct buffer_head *dirent_bh = NULL;
char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
- struct buffer_head *orphan_entry_bh = NULL;
+ struct ocfs2_dir_lookup_result lookup = { NULL, };
+ struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
dentry->d_name.len, dentry->d_name.name);
@@ -791,8 +792,8 @@ static int ocfs2_unlink(struct inode *dir,
}
status = ocfs2_find_files_on_disk(dentry->d_name.name,
- dentry->d_name.len, &blkno,
- dir, &dirent_bh, &dirent);
+ dentry->d_name.len, &blkno, dir,
+ &lookup);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -836,8 +837,7 @@ static int ocfs2_unlink(struct inode *dir,
if (inode_is_unlinkable(inode)) {
status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, inode,
- orphan_name,
- &orphan_entry_bh);
+ orphan_name, &orphan_insert);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -863,7 +863,7 @@ static int ocfs2_unlink(struct inode *dir,
if (inode_is_unlinkable(inode)) {
status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name,
- orphan_entry_bh, orphan_dir);
+ &orphan_insert, orphan_dir);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -871,7 +871,7 @@ static int ocfs2_unlink(struct inode *dir,
}
/* delete the name from the parent dir */
- status = ocfs2_delete_entry(handle, dir, dirent, dirent_bh);
+ status = ocfs2_delete_entry(handle, dir, &lookup);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -916,9 +916,10 @@ leave:
}
brelse(fe_bh);
- brelse(dirent_bh);
brelse(parent_node_bh);
- brelse(orphan_entry_bh);
+
+ ocfs2_free_dir_lookup_result(&orphan_insert);
+ ocfs2_free_dir_lookup_result(&lookup);
mlog_exit(status);
@@ -1004,8 +1005,8 @@ static int ocfs2_rename(struct inode *old_dir,
struct inode *new_dir,
struct dentry *new_dentry)
{
- int status = 0, rename_lock = 0, parents_locked = 0;
- int old_child_locked = 0, new_child_locked = 0;
+ int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
+ int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
struct inode *old_inode = old_dentry->d_inode;
struct inode *new_inode = new_dentry->d_inode;
struct inode *orphan_dir = NULL;
@@ -1020,13 +1021,13 @@ static int ocfs2_rename(struct inode *old_dir,
handle_t *handle = NULL;
struct buffer_head *old_dir_bh = NULL;
struct buffer_head *new_dir_bh = NULL;
- struct ocfs2_dir_entry *old_inode_dot_dot_de = NULL, *old_de = NULL,
- *new_de = NULL;
- struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above
- struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir,
- // this is the 1st dirent bh
nlink_t old_dir_nlink = old_dir->i_nlink;
struct ocfs2_dinode *old_di;
+ struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
+ struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
+ struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
+ struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
+ struct ocfs2_dir_lookup_result target_insert = { NULL, };
/* At some point it might be nice to break this function up a
* bit. */
@@ -1108,9 +1109,10 @@ static int ocfs2_rename(struct inode *old_dir,
if (S_ISDIR(old_inode->i_mode)) {
u64 old_inode_parent;
+ update_dot_dot = 1;
status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
- old_inode, &old_inode_de_bh,
- &old_inode_dot_dot_de);
+ old_inode,
+ &old_inode_dot_dot_res);
if (status) {
status = -EIO;
goto bail;
@@ -1151,8 +1153,8 @@ static int ocfs2_rename(struct inode *old_dir,
* to delete it */
status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
new_dentry->d_name.len,
- &newfe_blkno, new_dir, &new_de_bh,
- &new_de);
+ &newfe_blkno, new_dir,
+ &target_lookup_res);
/* The only error we allow here is -ENOENT because the new
* file not existing is perfectly valid. */
if ((status < 0) && (status != -ENOENT)) {
@@ -1161,8 +1163,10 @@ static int ocfs2_rename(struct inode *old_dir,
mlog_errno(status);
goto bail;
}
+ if (status == 0)
+ target_exists = 1;
- if (!new_de && new_inode) {
+ if (!target_exists && new_inode) {
/*
* Target was unlinked by another node while we were
* waiting to get to ocfs2_rename(). There isn't
@@ -1175,7 +1179,7 @@ static int ocfs2_rename(struct inode *old_dir,
/* In case we need to overwrite an existing file, we blow it
* away first */
- if (new_de) {
+ if (target_exists) {
/* VFS didn't think there existed an inode here, but
* someone else in the cluster must have raced our
* rename to create one. Today we error cleanly, in
@@ -1216,8 +1220,8 @@ static int ocfs2_rename(struct inode *old_dir,
newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
- mlog(0, "aha rename over existing... new_de=%p new_blkno=%llu "
- "newfebh=%p bhblocknr=%llu\n", new_de,
+ mlog(0, "aha rename over existing... new_blkno=%llu "
+ "newfebh=%p bhblocknr=%llu\n",
(unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
(unsigned long long)newfe_bh->b_blocknr : 0ULL);
@@ -1225,7 +1229,7 @@ static int ocfs2_rename(struct inode *old_dir,
status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
new_inode,
orphan_name,
- &orphan_entry_bh);
+ &orphan_insert);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1243,7 +1247,7 @@ static int ocfs2_rename(struct inode *old_dir,
status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
new_dentry->d_name.name,
new_dentry->d_name.len,
- &insert_entry_bh);
+ &target_insert);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1258,7 +1262,7 @@ static int ocfs2_rename(struct inode *old_dir,
goto bail;
}
- if (new_de) {
+ if (target_exists) {
if (S_ISDIR(new_inode->i_mode)) {
if (!ocfs2_empty_dir(new_inode) ||
new_inode->i_nlink != 2) {
@@ -1277,7 +1281,7 @@ static int ocfs2_rename(struct inode *old_dir,
(newfe->i_links_count == cpu_to_le16(1))){
status = ocfs2_orphan_add(osb, handle, new_inode,
newfe, orphan_name,
- orphan_entry_bh, orphan_dir);
+ &orphan_insert, orphan_dir);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1285,8 +1289,8 @@ static int ocfs2_rename(struct inode *old_dir,
}
/* change the dirent to point to the correct inode */
- status = ocfs2_update_entry(new_dir, handle, new_de_bh,
- new_de, old_inode);
+ status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
+ old_inode);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1307,7 +1311,7 @@ static int ocfs2_rename(struct inode *old_dir,
/* if the name was not found in new_dir, add it now */
status = ocfs2_add_entry(handle, new_dentry, old_inode,
OCFS2_I(old_inode)->ip_blkno,
- new_dir_bh, insert_entry_bh);
+ new_dir_bh, &target_insert);
}
old_inode->i_ctime = CURRENT_TIME;
@@ -1334,15 +1338,13 @@ static int ocfs2_rename(struct inode *old_dir,
* because the insert might have changed the type of directory
* we're dealing with.
*/
- old_de_bh = ocfs2_find_entry(old_dentry->d_name.name,
- old_dentry->d_name.len,
- old_dir, &old_de);
- if (!old_de_bh) {
- status = -EIO;
+ status = ocfs2_find_entry(old_dentry->d_name.name,
+ old_dentry->d_name.len, old_dir,
+ &old_entry_lookup);
+ if (status)
goto bail;
- }
- status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh);
+ status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1353,9 +1355,10 @@ static int ocfs2_rename(struct inode *old_dir,
new_inode->i_ctime = CURRENT_TIME;
}
old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
- if (old_inode_de_bh) {
- status = ocfs2_update_entry(old_inode, handle, old_inode_de_bh,
- old_inode_dot_dot_de, new_dir);
+
+ if (update_dot_dot) {
+ status = ocfs2_update_entry(old_inode, handle,
+ &old_inode_dot_dot_res, new_dir);
old_dir->i_nlink--;
if (new_inode) {
new_inode->i_nlink--;
@@ -1429,13 +1432,17 @@ bail:
if (new_inode)
iput(new_inode);
+
+ ocfs2_free_dir_lookup_result(&target_lookup_res);
+ ocfs2_free_dir_lookup_result(&old_entry_lookup);
+ ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
+ ocfs2_free_dir_lookup_result(&orphan_insert);
+ ocfs2_free_dir_lookup_result(&target_insert);
+
brelse(newfe_bh);
brelse(old_inode_bh);
brelse(old_dir_bh);
brelse(new_dir_bh);
- brelse(new_de_bh);
- brelse(old_de_bh);
- brelse(old_inode_de_bh);
brelse(orphan_entry_bh);
brelse(insert_entry_bh);
@@ -1558,7 +1565,6 @@ static int ocfs2_symlink(struct inode *dir,
struct inode *inode = NULL;
struct super_block *sb;
struct buffer_head *new_fe_bh = NULL;
- struct buffer_head *de_bh = NULL;
struct buffer_head *parent_fe_bh = NULL;
struct ocfs2_dinode *fe = NULL;
struct ocfs2_dinode *dirfe;
@@ -1572,6 +1578,7 @@ static int ocfs2_symlink(struct inode *dir,
.enable = 1,
};
int did_quota = 0, did_quota_inode = 0;
+ struct ocfs2_dir_lookup_result lookup = { NULL, };
mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
dentry, symname, dentry->d_name.len, dentry->d_name.name);
@@ -1605,7 +1612,7 @@ static int ocfs2_symlink(struct inode *dir,
status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
dentry->d_name.name,
- dentry->d_name.len, &de_bh);
+ dentry->d_name.len, &lookup);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1744,7 +1751,7 @@ static int ocfs2_symlink(struct inode *dir,
status = ocfs2_add_entry(handle, dentry, inode,
le64_to_cpu(fe->i_blkno), parent_fe_bh,
- de_bh);
+ &lookup);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1772,9 +1779,9 @@ bail:
brelse(new_fe_bh);
brelse(parent_fe_bh);
- brelse(de_bh);
kfree(si.name);
kfree(si.value);
+ ocfs2_free_dir_lookup_result(&lookup);
if (inode_ac)
ocfs2_free_alloc_context(inode_ac);
if (data_ac)
@@ -1826,7 +1833,7 @@ static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
struct inode **ret_orphan_dir,
struct inode *inode,
char *name,
- struct buffer_head **de_bh)
+ struct ocfs2_dir_lookup_result *lookup)
{
struct inode *orphan_dir_inode;
struct buffer_head *orphan_dir_bh = NULL;
@@ -1857,7 +1864,7 @@ static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
orphan_dir_bh, name,
- OCFS2_ORPHAN_NAMELEN, de_bh);
+ OCFS2_ORPHAN_NAMELEN, lookup);
if (status < 0) {
ocfs2_inode_unlock(orphan_dir_inode, 1);
@@ -1884,7 +1891,7 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
struct inode *inode,
struct ocfs2_dinode *fe,
char *name,
- struct buffer_head *de_bh,
+ struct ocfs2_dir_lookup_result *lookup,
struct inode *orphan_dir_inode)
{
struct buffer_head *orphan_dir_bh = NULL;
@@ -1922,7 +1929,7 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
OCFS2_ORPHAN_NAMELEN, inode,
OCFS2_I(inode)->ip_blkno,
- orphan_dir_bh, de_bh);
+ orphan_dir_bh, lookup);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -1955,8 +1962,7 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
char name[OCFS2_ORPHAN_NAMELEN + 1];
struct ocfs2_dinode *orphan_fe;
int status = 0;
- struct buffer_head *target_de_bh = NULL;
- struct ocfs2_dir_entry *target_de = NULL;
+ struct ocfs2_dir_lookup_result lookup = { NULL, };
mlog_entry_void();
@@ -1971,17 +1977,15 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
OCFS2_ORPHAN_NAMELEN);
/* find it's spot in the orphan directory */
- target_de_bh = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN,
- orphan_dir_inode, &target_de);
- if (!target_de_bh) {
- status = -ENOENT;
+ status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode,
+ &lookup);
+ if (status) {
mlog_errno(status);
goto leave;
}
/* remove it from the orphan directory */
- status = ocfs2_delete_entry(handle, orphan_dir_inode, target_de,
- target_de_bh);
+ status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -2007,7 +2011,7 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
}
leave:
- brelse(target_de_bh);
+ ocfs2_free_dir_lookup_result(&lookup);
mlog_exit(status);
return status;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 16:16:39 +0000