Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec...
[pandora-kernel.git] / fs / ocfs2 / namei.c
index 8601f93..f010b22 100644 (file)
@@ -69,7 +69,6 @@
 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
                              struct inode *dir,
                              struct inode *inode,
-                             struct dentry *dentry,
                              dev_t dev,
                              struct buffer_head **new_fe_bh,
                              struct buffer_head *parent_fe_bh,
@@ -78,7 +77,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
 
 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
                                    struct inode **ret_orphan_dir,
-                                   struct inode *inode,
+                                   u64 blkno,
                                    char *name,
                                    struct ocfs2_dir_lookup_result *lookup);
 
@@ -358,8 +357,12 @@ static int ocfs2_mknod(struct inode *dir,
        }
        did_quota_inode = 1;
 
+       mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
+                  inode->i_mode, (unsigned long)dev, dentry->d_name.len,
+                  dentry->d_name.name);
+
        /* do the real work now. */
-       status = ocfs2_mknod_locked(osb, dir, inode, dentry, dev,
+       status = ocfs2_mknod_locked(osb, dir, inode, dev,
                                    &new_fe_bh, parent_fe_bh, handle,
                                    inode_ac);
        if (status < 0) {
@@ -375,7 +378,8 @@ static int ocfs2_mknod(struct inode *dir,
                        goto leave;
                }
 
-               status = ocfs2_journal_access_di(handle, dir, parent_fe_bh,
+               status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
+                                                parent_fe_bh,
                                                 OCFS2_JOURNAL_ACCESS_WRITE);
                if (status < 0) {
                        mlog_errno(status);
@@ -465,7 +469,6 @@ leave:
 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
                              struct inode *dir,
                              struct inode *inode,
-                             struct dentry *dentry,
                              dev_t dev,
                              struct buffer_head **new_fe_bh,
                              struct buffer_head *parent_fe_bh,
@@ -479,10 +482,6 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
        u16 suballoc_bit;
        u16 feat;
 
-       mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
-                  inode->i_mode, (unsigned long)dev, dentry->d_name.len,
-                  dentry->d_name.name);
-
        *new_fe_bh = NULL;
 
        status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh,
@@ -507,9 +506,10 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
                mlog_errno(status);
                goto leave;
        }
-       ocfs2_set_new_buffer_uptodate(inode, *new_fe_bh);
+       ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
 
-       status = ocfs2_journal_access_di(handle, inode, *new_fe_bh,
+       status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
+                                        *new_fe_bh,
                                         OCFS2_JOURNAL_ACCESS_CREATE);
        if (status < 0) {
                mlog_errno(status);
@@ -565,7 +565,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
        }
 
        ocfs2_populate_inode(inode, fe, 1);
-       ocfs2_inode_set_new(osb, inode);
+       ocfs2_ci_set_new(osb, INODE_CACHE(inode));
        if (!ocfs2_mount_local(osb)) {
                status = ocfs2_create_new_inode_locks(inode);
                if (status < 0)
@@ -682,7 +682,7 @@ static int ocfs2_link(struct dentry *old_dentry,
                goto out_unlock_inode;
        }
 
-       err = ocfs2_journal_access_di(handle, inode, fe_bh,
+       err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
                                      OCFS2_JOURNAL_ACCESS_WRITE);
        if (err < 0) {
                mlog_errno(err);
@@ -850,7 +850,8 @@ static int ocfs2_unlink(struct inode *dir,
        }
 
        if (inode_is_unlinkable(inode)) {
-               status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, inode,
+               status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
+                                                 OCFS2_I(inode)->ip_blkno,
                                                  orphan_name, &orphan_insert);
                if (status < 0) {
                        mlog_errno(status);
@@ -866,7 +867,7 @@ static int ocfs2_unlink(struct inode *dir,
                goto leave;
        }
 
-       status = ocfs2_journal_access_di(handle, inode, fe_bh,
+       status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
                                         OCFS2_JOURNAL_ACCESS_WRITE);
        if (status < 0) {
                mlog_errno(status);
@@ -1241,9 +1242,8 @@ static int ocfs2_rename(struct inode *old_dir,
 
                if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
                        status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
-                                                         new_inode,
-                                                         orphan_name,
-                                                         &orphan_insert);
+                                               OCFS2_I(new_inode)->ip_blkno,
+                                               orphan_name, &orphan_insert);
                        if (status < 0) {
                                mlog_errno(status);
                                goto bail;
@@ -1284,7 +1284,8 @@ static int ocfs2_rename(struct inode *old_dir,
                                goto bail;
                        }
                }
-               status = ocfs2_journal_access_di(handle, new_inode, newfe_bh,
+               status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
+                                                newfe_bh,
                                                 OCFS2_JOURNAL_ACCESS_WRITE);
                if (status < 0) {
                        mlog_errno(status);
@@ -1331,7 +1332,8 @@ static int ocfs2_rename(struct inode *old_dir,
        old_inode->i_ctime = CURRENT_TIME;
        mark_inode_dirty(old_inode);
 
-       status = ocfs2_journal_access_di(handle, old_inode, old_inode_bh,
+       status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
+                                        old_inode_bh,
                                         OCFS2_JOURNAL_ACCESS_WRITE);
        if (status >= 0) {
                old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
@@ -1407,9 +1409,10 @@ static int ocfs2_rename(struct inode *old_dir,
                             (int)old_dir_nlink, old_dir->i_nlink);
                } else {
                        struct ocfs2_dinode *fe;
-                       status = ocfs2_journal_access_di(handle, old_dir,
-                                                     old_dir_bh,
-                                                     OCFS2_JOURNAL_ACCESS_WRITE);
+                       status = ocfs2_journal_access_di(handle,
+                                                        INODE_CACHE(old_dir),
+                                                        old_dir_bh,
+                                                        OCFS2_JOURNAL_ACCESS_WRITE);
                        fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
                        ocfs2_set_links_count(fe, old_dir->i_nlink);
                        status = ocfs2_journal_dirty(handle, old_dir_bh);
@@ -1527,9 +1530,11 @@ static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
                        mlog_errno(status);
                        goto bail;
                }
-               ocfs2_set_new_buffer_uptodate(inode, bhs[virtual]);
+               ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
+                                             bhs[virtual]);
 
-               status = ocfs2_journal_access(handle, inode, bhs[virtual],
+               status = ocfs2_journal_access(handle, INODE_CACHE(inode),
+                                             bhs[virtual],
                                              OCFS2_JOURNAL_ACCESS_CREATE);
                if (status < 0) {
                        mlog_errno(status);
@@ -1692,7 +1697,11 @@ static int ocfs2_symlink(struct inode *dir,
        }
        did_quota_inode = 1;
 
-       status = ocfs2_mknod_locked(osb, dir, inode, dentry,
+       mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry,
+                  inode->i_mode, dentry->d_name.len,
+                  dentry->d_name.name);
+
+       status = ocfs2_mknod_locked(osb, dir, inode,
                                    0, &new_fe_bh, parent_fe_bh, handle,
                                    inode_ac);
        if (status < 0) {
@@ -1842,7 +1851,7 @@ bail:
 
 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
                                    struct inode **ret_orphan_dir,
-                                   struct inode *inode,
+                                   u64 blkno,
                                    char *name,
                                    struct ocfs2_dir_lookup_result *lookup)
 {
@@ -1850,7 +1859,7 @@ static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
        struct buffer_head *orphan_dir_bh = NULL;
        int status = 0;
 
-       status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
+       status = ocfs2_blkno_stringify(blkno, name);
        if (status < 0) {
                mlog_errno(status);
                return status;
@@ -1917,7 +1926,9 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
                goto leave;
        }
 
-       status = ocfs2_journal_access_di(handle, orphan_dir_inode, orphan_dir_bh,
+       status = ocfs2_journal_access_di(handle,
+                                        INODE_CACHE(orphan_dir_inode),
+                                        orphan_dir_bh,
                                         OCFS2_JOURNAL_ACCESS_WRITE);
        if (status < 0) {
                mlog_errno(status);
@@ -2002,7 +2013,9 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
                goto leave;
        }
 
-       status = ocfs2_journal_access_di(handle,orphan_dir_inode,  orphan_dir_bh,
+       status = ocfs2_journal_access_di(handle,
+                                        INODE_CACHE(orphan_dir_inode),
+                                        orphan_dir_bh,
                                         OCFS2_JOURNAL_ACCESS_WRITE);
        if (status < 0) {
                mlog_errno(status);
@@ -2028,6 +2041,274 @@ leave:
        return status;
 }
 
+int ocfs2_create_inode_in_orphan(struct inode *dir,
+                                int mode,
+                                struct inode **new_inode)
+{
+       int status, did_quota_inode = 0;
+       struct inode *inode = NULL;
+       struct inode *orphan_dir = NULL;
+       struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+       struct ocfs2_dinode *di = NULL;
+       handle_t *handle = NULL;
+       char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
+       struct buffer_head *parent_di_bh = NULL;
+       struct buffer_head *new_di_bh = NULL;
+       struct ocfs2_alloc_context *inode_ac = NULL;
+       struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
+
+       status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
+       if (status < 0) {
+               if (status != -ENOENT)
+                       mlog_errno(status);
+               return status;
+       }
+
+       /*
+        * We give the orphan dir the root blkno to fake an orphan name,
+        * and allocate enough space for our insertion.
+        */
+       status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
+                                         osb->root_blkno,
+                                         orphan_name, &orphan_insert);
+       if (status < 0) {
+               mlog_errno(status);
+               goto leave;
+       }
+
+       /* reserve an inode spot */
+       status = ocfs2_reserve_new_inode(osb, &inode_ac);
+       if (status < 0) {
+               if (status != -ENOSPC)
+                       mlog_errno(status);
+               goto leave;
+       }
+
+       inode = ocfs2_get_init_inode(dir, mode);
+       if (!inode) {
+               status = -ENOMEM;
+               mlog_errno(status);
+               goto leave;
+       }
+
+       handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
+       if (IS_ERR(handle)) {
+               status = PTR_ERR(handle);
+               handle = NULL;
+               mlog_errno(status);
+               goto leave;
+       }
+
+       /* We don't use standard VFS wrapper because we don't want vfs_dq_init
+        * to be called. */
+       if (sb_any_quota_active(osb->sb) &&
+           osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
+               status = -EDQUOT;
+               goto leave;
+       }
+       did_quota_inode = 1;
+
+       /* do the real work now. */
+       status = ocfs2_mknod_locked(osb, dir, inode,
+                                   0, &new_di_bh, parent_di_bh, handle,
+                                   inode_ac);
+       if (status < 0) {
+               mlog_errno(status);
+               goto leave;
+       }
+
+       status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name);
+       if (status < 0) {
+               mlog_errno(status);
+               goto leave;
+       }
+
+       di = (struct ocfs2_dinode *)new_di_bh->b_data;
+       status = ocfs2_orphan_add(osb, handle, inode, di, orphan_name,
+                                 &orphan_insert, orphan_dir);
+       if (status < 0) {
+               mlog_errno(status);
+               goto leave;
+       }
+
+       /* get open lock so that only nodes can't remove it from orphan dir. */
+       status = ocfs2_open_lock(inode);
+       if (status < 0)
+               mlog_errno(status);
+
+leave:
+       if (status < 0 && did_quota_inode)
+               vfs_dq_free_inode(inode);
+       if (handle)
+               ocfs2_commit_trans(osb, handle);
+
+       if (orphan_dir) {
+               /* This was locked for us in ocfs2_prepare_orphan_dir() */
+               ocfs2_inode_unlock(orphan_dir, 1);
+               mutex_unlock(&orphan_dir->i_mutex);
+               iput(orphan_dir);
+       }
+
+       if (status == -ENOSPC)
+               mlog(0, "Disk is full\n");
+
+       if ((status < 0) && inode) {
+               clear_nlink(inode);
+               iput(inode);
+       }
+
+       if (inode_ac)
+               ocfs2_free_alloc_context(inode_ac);
+
+       brelse(new_di_bh);
+
+       if (!status)
+               *new_inode = inode;
+
+       ocfs2_free_dir_lookup_result(&orphan_insert);
+
+       ocfs2_inode_unlock(dir, 1);
+       brelse(parent_di_bh);
+       return status;
+}
+
+int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
+                                  struct inode *inode,
+                                  struct dentry *dentry)
+{
+       int status = 0;
+       struct buffer_head *parent_di_bh = NULL;
+       handle_t *handle = NULL;
+       struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+       struct ocfs2_dinode *dir_di, *di;
+       struct inode *orphan_dir_inode = NULL;
+       struct buffer_head *orphan_dir_bh = NULL;
+       struct buffer_head *di_bh = NULL;
+       struct ocfs2_dir_lookup_result lookup = { NULL, };
+
+       mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry,
+                  dentry->d_name.len, dentry->d_name.name);
+
+       status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
+       if (status < 0) {
+               if (status != -ENOENT)
+                       mlog_errno(status);
+               return status;
+       }
+
+       dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
+       if (!dir_di->i_links_count) {
+               /* can't make a file in a deleted directory. */
+               status = -ENOENT;
+               goto leave;
+       }
+
+       status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
+                                          dentry->d_name.len);
+       if (status)
+               goto leave;
+
+       /* get a spot inside the dir. */
+       status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
+                                             dentry->d_name.name,
+                                             dentry->d_name.len, &lookup);
+       if (status < 0) {
+               mlog_errno(status);
+               goto leave;
+       }
+
+       orphan_dir_inode = ocfs2_get_system_file_inode(osb,
+                                                      ORPHAN_DIR_SYSTEM_INODE,
+                                                      osb->slot_num);
+       if (!orphan_dir_inode) {
+               status = -EEXIST;
+               mlog_errno(status);
+               goto leave;
+       }
+
+       mutex_lock(&orphan_dir_inode->i_mutex);
+
+       status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
+       if (status < 0) {
+               mlog_errno(status);
+               mutex_unlock(&orphan_dir_inode->i_mutex);
+               iput(orphan_dir_inode);
+               goto leave;
+       }
+
+       status = ocfs2_read_inode_block(inode, &di_bh);
+       if (status < 0) {
+               mlog_errno(status);
+               goto orphan_unlock;
+       }
+
+       handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
+       if (IS_ERR(handle)) {
+               status = PTR_ERR(handle);
+               handle = NULL;
+               mlog_errno(status);
+               goto orphan_unlock;
+       }
+
+       status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
+                                        di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
+       if (status < 0) {
+               mlog_errno(status);
+               goto out_commit;
+       }
+
+       status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
+                                 orphan_dir_bh);
+       if (status < 0) {
+               mlog_errno(status);
+               goto out_commit;
+       }
+
+       di = (struct ocfs2_dinode *)di_bh->b_data;
+       le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL);
+       di->i_orphaned_slot = 0;
+       ocfs2_journal_dirty(handle, di_bh);
+
+       status = ocfs2_add_entry(handle, dentry, inode,
+                                OCFS2_I(inode)->ip_blkno, parent_di_bh,
+                                &lookup);
+       if (status < 0) {
+               mlog_errno(status);
+               goto out_commit;
+       }
+
+       status = ocfs2_dentry_attach_lock(dentry, inode,
+                                         OCFS2_I(dir)->ip_blkno);
+       if (status) {
+               mlog_errno(status);
+               goto out_commit;
+       }
+
+       insert_inode_hash(inode);
+       dentry->d_op = &ocfs2_dentry_ops;
+       d_instantiate(dentry, inode);
+       status = 0;
+out_commit:
+       ocfs2_commit_trans(osb, handle);
+orphan_unlock:
+       ocfs2_inode_unlock(orphan_dir_inode, 1);
+       mutex_unlock(&orphan_dir_inode->i_mutex);
+       iput(orphan_dir_inode);
+leave:
+
+       ocfs2_inode_unlock(dir, 1);
+
+       brelse(di_bh);
+       brelse(parent_di_bh);
+       brelse(orphan_dir_bh);
+
+       ocfs2_free_dir_lookup_result(&lookup);
+
+       mlog_exit(status);
+
+       return status;
+}
+
 const struct inode_operations ocfs2_dir_iops = {
        .create         = ocfs2_create,
        .lookup         = ocfs2_lookup,