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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/ocfs2/namei.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/ocfs2/namei.c')
-rw-r--r--ANDROID_3.4.5/fs/ocfs2/namei.c2500
1 files changed, 0 insertions, 2500 deletions
diff --git a/ANDROID_3.4.5/fs/ocfs2/namei.c b/ANDROID_3.4.5/fs/ocfs2/namei.c
deleted file mode 100644
index a9856e3e..00000000
--- a/ANDROID_3.4.5/fs/ocfs2/namei.c
+++ /dev/null
@@ -1,2500 +0,0 @@
-/* -*- mode: c; c-basic-offset: 8; -*-
- * vim: noexpandtab sw=8 ts=8 sts=0:
- *
- * namei.c
- *
- * Create and rename file, directory, symlinks
- *
- * Copyright (C) 2002, 2004 Oracle. All rights reserved.
- *
- * Portions of this code from linux/fs/ext3/dir.c
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/fs/minix/dir.c
- *
- * Copyright (C) 1991, 1992 Linux Torvalds
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
- */
-
-#include <linux/fs.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/highmem.h>
-#include <linux/quotaops.h>
-
-#include <cluster/masklog.h>
-
-#include "ocfs2.h"
-
-#include "alloc.h"
-#include "dcache.h"
-#include "dir.h"
-#include "dlmglue.h"
-#include "extent_map.h"
-#include "file.h"
-#include "inode.h"
-#include "journal.h"
-#include "namei.h"
-#include "suballoc.h"
-#include "super.h"
-#include "symlink.h"
-#include "sysfile.h"
-#include "uptodate.h"
-#include "xattr.h"
-#include "acl.h"
-#include "ocfs2_trace.h"
-
-#include "buffer_head_io.h"
-
-static int ocfs2_mknod_locked(struct ocfs2_super *osb,
- struct inode *dir,
- struct inode *inode,
- dev_t dev,
- struct buffer_head **new_fe_bh,
- struct buffer_head *parent_fe_bh,
- handle_t *handle,
- struct ocfs2_alloc_context *inode_ac);
-
-static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
- struct inode **ret_orphan_dir,
- u64 blkno,
- char *name,
- struct ocfs2_dir_lookup_result *lookup);
-
-static int ocfs2_orphan_add(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *inode,
- struct buffer_head *fe_bh,
- char *name,
- struct ocfs2_dir_lookup_result *lookup,
- struct inode *orphan_dir_inode);
-
-static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *inode,
- const char *symname);
-
-/* An orphan dir name is an 8 byte value, printed as a hex string */
-#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
-
-static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
-{
- int status;
- u64 blkno;
- struct inode *inode = NULL;
- struct dentry *ret;
- struct ocfs2_inode_info *oi;
-
- trace_ocfs2_lookup(dir, dentry, dentry->d_name.len,
- dentry->d_name.name,
- (unsigned long long)OCFS2_I(dir)->ip_blkno, 0);
-
- if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
- ret = ERR_PTR(-ENAMETOOLONG);
- goto bail;
- }
-
- status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- ret = ERR_PTR(status);
- goto bail;
- }
-
- status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
- dentry->d_name.len, &blkno);
- if (status < 0)
- goto bail_add;
-
- inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
- if (IS_ERR(inode)) {
- ret = ERR_PTR(-EACCES);
- goto bail_unlock;
- }
-
- oi = OCFS2_I(inode);
- /* Clear any orphaned state... If we were able to look up the
- * inode from a directory, it certainly can't be orphaned. We
- * might have the bad state from a node which intended to
- * orphan this inode but crashed before it could commit the
- * unlink. */
- spin_lock(&oi->ip_lock);
- oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
- spin_unlock(&oi->ip_lock);
-
-bail_add:
- ret = d_splice_alias(inode, dentry);
-
- if (inode) {
- /*
- * If d_splice_alias() finds a DCACHE_DISCONNECTED
- * dentry, it will d_move() it on top of ourse. The
- * return value will indicate this however, so in
- * those cases, we switch them around for the locking
- * code.
- *
- * NOTE: This dentry already has ->d_op set from
- * ocfs2_get_parent() and ocfs2_get_dentry()
- */
- if (ret)
- dentry = ret;
-
- status = ocfs2_dentry_attach_lock(dentry, inode,
- OCFS2_I(dir)->ip_blkno);
- if (status) {
- mlog_errno(status);
- ret = ERR_PTR(status);
- goto bail_unlock;
- }
- } else
- ocfs2_dentry_attach_gen(dentry);
-
-bail_unlock:
- /* Don't drop the cluster lock until *after* the d_add --
- * unlink on another node will message us to remove that
- * dentry under this lock so otherwise we can race this with
- * the downconvert thread and have a stale dentry. */
- ocfs2_inode_unlock(dir, 0);
-
-bail:
-
- trace_ocfs2_lookup_ret(ret);
-
- return ret;
-}
-
-static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
-{
- struct inode *inode;
-
- inode = new_inode(dir->i_sb);
- if (!inode) {
- mlog(ML_ERROR, "new_inode failed!\n");
- return NULL;
- }
-
- /* populate as many fields early on as possible - many of
- * these are used by the support functions here and in
- * callers. */
- if (S_ISDIR(mode))
- set_nlink(inode, 2);
- inode_init_owner(inode, dir, mode);
- dquot_initialize(inode);
- return inode;
-}
-
-static int ocfs2_mknod(struct inode *dir,
- struct dentry *dentry,
- umode_t mode,
- dev_t dev)
-{
- int status = 0;
- struct buffer_head *parent_fe_bh = NULL;
- handle_t *handle = NULL;
- struct ocfs2_super *osb;
- struct ocfs2_dinode *dirfe;
- struct buffer_head *new_fe_bh = NULL;
- struct inode *inode = NULL;
- struct ocfs2_alloc_context *inode_ac = NULL;
- struct ocfs2_alloc_context *data_ac = NULL;
- struct ocfs2_alloc_context *meta_ac = NULL;
- int want_clusters = 0;
- int want_meta = 0;
- int xattr_credits = 0;
- struct ocfs2_security_xattr_info si = {
- .enable = 1,
- };
- int did_quota_inode = 0;
- struct ocfs2_dir_lookup_result lookup = { NULL, };
- sigset_t oldset;
- int did_block_signals = 0;
-
- trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
- (unsigned long long)OCFS2_I(dir)->ip_blkno,
- (unsigned long)dev, mode);
-
- dquot_initialize(dir);
-
- /* get our super block */
- osb = OCFS2_SB(dir->i_sb);
-
- status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- return status;
- }
-
- if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
- status = -EMLINK;
- goto leave;
- }
-
- dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
- if (!ocfs2_read_links_count(dirfe)) {
- /* 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_fe_bh,
- dentry->d_name.name,
- dentry->d_name.len, &lookup);
- 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;
- }
-
- /* get security xattr */
- status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
- if (status) {
- if (status == -EOPNOTSUPP)
- si.enable = 0;
- else {
- mlog_errno(status);
- goto leave;
- }
- }
-
- /* calculate meta data/clusters for setting security and acl xattr */
- status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
- &si, &want_clusters,
- &xattr_credits, &want_meta);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- /* Reserve a cluster if creating an extent based directory. */
- if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
- want_clusters += 1;
-
- /* Dir indexing requires extra space as well */
- if (ocfs2_supports_indexed_dirs(osb))
- want_meta++;
- }
-
- status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
- if (status < 0) {
- if (status != -ENOSPC)
- mlog_errno(status);
- goto leave;
- }
-
- status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
- if (status < 0) {
- if (status != -ENOSPC)
- mlog_errno(status);
- goto leave;
- }
-
- handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
- S_ISDIR(mode),
- xattr_credits));
- if (IS_ERR(handle)) {
- status = PTR_ERR(handle);
- handle = NULL;
- mlog_errno(status);
- goto leave;
- }
-
- /* Starting to change things, restart is no longer possible. */
- ocfs2_block_signals(&oldset);
- did_block_signals = 1;
-
- status = dquot_alloc_inode(inode);
- if (status)
- goto leave;
- did_quota_inode = 1;
-
- /* do the real work now. */
- status = ocfs2_mknod_locked(osb, dir, inode, dev,
- &new_fe_bh, parent_fe_bh, handle,
- inode_ac);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- if (S_ISDIR(mode)) {
- status = ocfs2_fill_new_dir(osb, handle, dir, inode,
- new_fe_bh, data_ac, meta_ac);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
- parent_fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
- ocfs2_add_links_count(dirfe, 1);
- ocfs2_journal_dirty(handle, parent_fe_bh);
- inc_nlink(dir);
- }
-
- status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
- meta_ac, data_ac);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- if (si.enable) {
- status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
- meta_ac, data_ac);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
- }
-
- /*
- * Do this before adding the entry to the directory. We add
- * also set d_op after success so that ->d_iput() will cleanup
- * the dentry lock even if ocfs2_add_entry() fails below.
- */
- status = ocfs2_dentry_attach_lock(dentry, inode,
- OCFS2_I(dir)->ip_blkno);
- if (status) {
- mlog_errno(status);
- goto leave;
- }
-
- status = ocfs2_add_entry(handle, dentry, inode,
- OCFS2_I(inode)->ip_blkno, parent_fe_bh,
- &lookup);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- insert_inode_hash(inode);
- d_instantiate(dentry, inode);
- status = 0;
-leave:
- if (status < 0 && did_quota_inode)
- dquot_free_inode(inode);
- if (handle)
- ocfs2_commit_trans(osb, handle);
-
- ocfs2_inode_unlock(dir, 1);
- if (did_block_signals)
- ocfs2_unblock_signals(&oldset);
-
- brelse(new_fe_bh);
- brelse(parent_fe_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)
- ocfs2_free_alloc_context(data_ac);
-
- if (meta_ac)
- ocfs2_free_alloc_context(meta_ac);
-
- /*
- * We should call iput after the i_mutex of the bitmap been
- * unlocked in ocfs2_free_alloc_context, or the
- * ocfs2_delete_inode will mutex_lock again.
- */
- if ((status < 0) && inode) {
- OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
- clear_nlink(inode);
- iput(inode);
- }
-
- if (status)
- mlog_errno(status);
-
- return status;
-}
-
-static int __ocfs2_mknod_locked(struct inode *dir,
- struct inode *inode,
- dev_t dev,
- struct buffer_head **new_fe_bh,
- struct buffer_head *parent_fe_bh,
- handle_t *handle,
- struct ocfs2_alloc_context *inode_ac,
- u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit)
-{
- int status = 0;
- struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
- struct ocfs2_dinode *fe = NULL;
- struct ocfs2_extent_list *fel;
- u16 feat;
-
- *new_fe_bh = NULL;
-
- /* populate as many fields early on as possible - many of
- * these are used by the support functions here and in
- * callers. */
- inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
- OCFS2_I(inode)->ip_blkno = fe_blkno;
- spin_lock(&osb->osb_lock);
- inode->i_generation = osb->s_next_generation++;
- spin_unlock(&osb->osb_lock);
-
- *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
- if (!*new_fe_bh) {
- status = -EIO;
- mlog_errno(status);
- goto leave;
- }
- ocfs2_set_new_buffer_uptodate(INODE_CACHE(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);
- goto leave;
- }
-
- fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
- memset(fe, 0, osb->sb->s_blocksize);
-
- fe->i_generation = cpu_to_le32(inode->i_generation);
- fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
- fe->i_blkno = cpu_to_le64(fe_blkno);
- fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
- fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
- fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
- fe->i_uid = cpu_to_le32(inode->i_uid);
- fe->i_gid = cpu_to_le32(inode->i_gid);
- fe->i_mode = cpu_to_le16(inode->i_mode);
- if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
- fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
-
- ocfs2_set_links_count(fe, inode->i_nlink);
-
- fe->i_last_eb_blk = 0;
- strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
- le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL);
- fe->i_atime = fe->i_ctime = fe->i_mtime =
- cpu_to_le64(CURRENT_TIME.tv_sec);
- fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
- cpu_to_le32(CURRENT_TIME.tv_nsec);
- fe->i_dtime = 0;
-
- /*
- * If supported, directories start with inline data. If inline
- * isn't supported, but indexing is, we start them as indexed.
- */
- feat = le16_to_cpu(fe->i_dyn_features);
- if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
- fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
-
- fe->id2.i_data.id_count = cpu_to_le16(
- ocfs2_max_inline_data_with_xattr(osb->sb, fe));
- } else {
- fel = &fe->id2.i_list;
- fel->l_tree_depth = 0;
- fel->l_next_free_rec = 0;
- fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
- }
-
- ocfs2_journal_dirty(handle, *new_fe_bh);
-
- ocfs2_populate_inode(inode, fe, 1);
- ocfs2_ci_set_new(osb, INODE_CACHE(inode));
- if (!ocfs2_mount_local(osb)) {
- status = ocfs2_create_new_inode_locks(inode);
- if (status < 0)
- mlog_errno(status);
- }
-
- status = 0; /* error in ocfs2_create_new_inode_locks is not
- * critical */
-
-leave:
- if (status < 0) {
- if (*new_fe_bh) {
- brelse(*new_fe_bh);
- *new_fe_bh = NULL;
- }
- }
-
- if (status)
- mlog_errno(status);
- return status;
-}
-
-static int ocfs2_mknod_locked(struct ocfs2_super *osb,
- struct inode *dir,
- struct inode *inode,
- dev_t dev,
- struct buffer_head **new_fe_bh,
- struct buffer_head *parent_fe_bh,
- handle_t *handle,
- struct ocfs2_alloc_context *inode_ac)
-{
- int status = 0;
- u64 suballoc_loc, fe_blkno = 0;
- u16 suballoc_bit;
-
- *new_fe_bh = NULL;
-
- status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh,
- inode_ac, &suballoc_loc,
- &suballoc_bit, &fe_blkno);
- if (status < 0) {
- mlog_errno(status);
- return status;
- }
-
- return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
- parent_fe_bh, handle, inode_ac,
- fe_blkno, suballoc_loc, suballoc_bit);
-}
-
-static int ocfs2_mkdir(struct inode *dir,
- struct dentry *dentry,
- umode_t mode)
-{
- int ret;
-
- trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name,
- OCFS2_I(dir)->ip_blkno, mode);
- ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
- if (ret)
- mlog_errno(ret);
-
- return ret;
-}
-
-static int ocfs2_create(struct inode *dir,
- struct dentry *dentry,
- umode_t mode,
- struct nameidata *nd)
-{
- int ret;
-
- trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name,
- (unsigned long long)OCFS2_I(dir)->ip_blkno, mode);
- ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
- if (ret)
- mlog_errno(ret);
-
- return ret;
-}
-
-static int ocfs2_link(struct dentry *old_dentry,
- struct inode *dir,
- struct dentry *dentry)
-{
- handle_t *handle;
- struct inode *inode = old_dentry->d_inode;
- int err;
- struct buffer_head *fe_bh = NULL;
- struct buffer_head *parent_fe_bh = NULL;
- struct ocfs2_dinode *fe = NULL;
- struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
- struct ocfs2_dir_lookup_result lookup = { NULL, };
- sigset_t oldset;
-
- trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno,
- old_dentry->d_name.len, old_dentry->d_name.name,
- dentry->d_name.len, dentry->d_name.name);
-
- if (S_ISDIR(inode->i_mode))
- return -EPERM;
-
- dquot_initialize(dir);
-
- err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT);
- if (err < 0) {
- if (err != -ENOENT)
- mlog_errno(err);
- return err;
- }
-
- if (!dir->i_nlink) {
- err = -ENOENT;
- goto out;
- }
-
- err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
- dentry->d_name.len);
- if (err)
- goto out;
-
- err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
- dentry->d_name.name,
- dentry->d_name.len, &lookup);
- if (err < 0) {
- mlog_errno(err);
- goto out;
- }
-
- err = ocfs2_inode_lock(inode, &fe_bh, 1);
- if (err < 0) {
- if (err != -ENOENT)
- mlog_errno(err);
- goto out;
- }
-
- fe = (struct ocfs2_dinode *) fe_bh->b_data;
- if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
- err = -EMLINK;
- goto out_unlock_inode;
- }
-
- handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
- if (IS_ERR(handle)) {
- err = PTR_ERR(handle);
- handle = NULL;
- mlog_errno(err);
- goto out_unlock_inode;
- }
-
- /* Starting to change things, restart is no longer possible. */
- ocfs2_block_signals(&oldset);
-
- err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (err < 0) {
- mlog_errno(err);
- goto out_commit;
- }
-
- inc_nlink(inode);
- inode->i_ctime = CURRENT_TIME;
- ocfs2_set_links_count(fe, inode->i_nlink);
- fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
- fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
- ocfs2_journal_dirty(handle, fe_bh);
-
- err = ocfs2_add_entry(handle, dentry, inode,
- OCFS2_I(inode)->ip_blkno,
- parent_fe_bh, &lookup);
- if (err) {
- ocfs2_add_links_count(fe, -1);
- drop_nlink(inode);
- mlog_errno(err);
- goto out_commit;
- }
-
- err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
- if (err) {
- mlog_errno(err);
- goto out_commit;
- }
-
- ihold(inode);
- d_instantiate(dentry, inode);
-
-out_commit:
- ocfs2_commit_trans(osb, handle);
- ocfs2_unblock_signals(&oldset);
-out_unlock_inode:
- ocfs2_inode_unlock(inode, 1);
-
-out:
- ocfs2_inode_unlock(dir, 1);
-
- brelse(fe_bh);
- brelse(parent_fe_bh);
-
- ocfs2_free_dir_lookup_result(&lookup);
-
- if (err)
- mlog_errno(err);
-
- return err;
-}
-
-/*
- * Takes and drops an exclusive lock on the given dentry. This will
- * force other nodes to drop it.
- */
-static int ocfs2_remote_dentry_delete(struct dentry *dentry)
-{
- int ret;
-
- ret = ocfs2_dentry_lock(dentry, 1);
- if (ret)
- mlog_errno(ret);
- else
- ocfs2_dentry_unlock(dentry, 1);
-
- return ret;
-}
-
-static inline int inode_is_unlinkable(struct inode *inode)
-{
- if (S_ISDIR(inode->i_mode)) {
- if (inode->i_nlink == 2)
- return 1;
- return 0;
- }
-
- if (inode->i_nlink == 1)
- return 1;
- return 0;
-}
-
-static int ocfs2_unlink(struct inode *dir,
- struct dentry *dentry)
-{
- int status;
- int child_locked = 0;
- struct inode *inode = dentry->d_inode;
- struct inode *orphan_dir = NULL;
- struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
- u64 blkno;
- struct ocfs2_dinode *fe = NULL;
- struct buffer_head *fe_bh = NULL;
- struct buffer_head *parent_node_bh = NULL;
- handle_t *handle = NULL;
- char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
- struct ocfs2_dir_lookup_result lookup = { NULL, };
- struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
-
- trace_ocfs2_unlink(dir, dentry, dentry->d_name.len,
- dentry->d_name.name,
- (unsigned long long)OCFS2_I(dir)->ip_blkno,
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
-
- dquot_initialize(dir);
-
- BUG_ON(dentry->d_parent->d_inode != dir);
-
- if (inode == osb->root_inode)
- return -EPERM;
-
- status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
- OI_LS_PARENT);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- return status;
- }
-
- status = ocfs2_find_files_on_disk(dentry->d_name.name,
- dentry->d_name.len, &blkno, dir,
- &lookup);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- goto leave;
- }
-
- if (OCFS2_I(inode)->ip_blkno != blkno) {
- status = -ENOENT;
-
- trace_ocfs2_unlink_noent(
- (unsigned long long)OCFS2_I(inode)->ip_blkno,
- (unsigned long long)blkno,
- OCFS2_I(inode)->ip_flags);
- goto leave;
- }
-
- status = ocfs2_inode_lock(inode, &fe_bh, 1);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- goto leave;
- }
- child_locked = 1;
-
- if (S_ISDIR(inode->i_mode)) {
- if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
- status = -ENOTEMPTY;
- goto leave;
- }
- }
-
- status = ocfs2_remote_dentry_delete(dentry);
- if (status < 0) {
- /* This remote delete should succeed under all normal
- * circumstances. */
- mlog_errno(status);
- goto leave;
- }
-
- if (inode_is_unlinkable(inode)) {
- status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
- OCFS2_I(inode)->ip_blkno,
- orphan_name, &orphan_insert);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
- }
-
- handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
- if (IS_ERR(handle)) {
- status = PTR_ERR(handle);
- handle = NULL;
- mlog_errno(status);
- goto leave;
- }
-
- status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- fe = (struct ocfs2_dinode *) fe_bh->b_data;
-
- if (inode_is_unlinkable(inode)) {
- status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name,
- &orphan_insert, orphan_dir);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
- }
-
- /* delete the name from the parent dir */
- status = ocfs2_delete_entry(handle, dir, &lookup);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- if (S_ISDIR(inode->i_mode))
- drop_nlink(inode);
- drop_nlink(inode);
- ocfs2_set_links_count(fe, inode->i_nlink);
- ocfs2_journal_dirty(handle, fe_bh);
-
- dir->i_ctime = dir->i_mtime = CURRENT_TIME;
- if (S_ISDIR(inode->i_mode))
- drop_nlink(dir);
-
- status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
- if (status < 0) {
- mlog_errno(status);
- if (S_ISDIR(inode->i_mode))
- inc_nlink(dir);
- }
-
-leave:
- if (handle)
- ocfs2_commit_trans(osb, handle);
-
- if (child_locked)
- ocfs2_inode_unlock(inode, 1);
-
- ocfs2_inode_unlock(dir, 1);
-
- 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);
- }
-
- brelse(fe_bh);
- brelse(parent_node_bh);
-
- ocfs2_free_dir_lookup_result(&orphan_insert);
- ocfs2_free_dir_lookup_result(&lookup);
-
- if (status)
- mlog_errno(status);
-
- return status;
-}
-
-/*
- * The only place this should be used is rename!
- * if they have the same id, then the 1st one is the only one locked.
- */
-static int ocfs2_double_lock(struct ocfs2_super *osb,
- struct buffer_head **bh1,
- struct inode *inode1,
- struct buffer_head **bh2,
- struct inode *inode2)
-{
- int status;
- struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
- struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
- struct buffer_head **tmpbh;
- struct inode *tmpinode;
-
- trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
- (unsigned long long)oi2->ip_blkno);
-
- if (*bh1)
- *bh1 = NULL;
- if (*bh2)
- *bh2 = NULL;
-
- /* we always want to lock the one with the lower lockid first. */
- if (oi1->ip_blkno != oi2->ip_blkno) {
- if (oi1->ip_blkno < oi2->ip_blkno) {
- /* switch id1 and id2 around */
- tmpbh = bh2;
- bh2 = bh1;
- bh1 = tmpbh;
-
- tmpinode = inode2;
- inode2 = inode1;
- inode1 = tmpinode;
- }
- /* lock id2 */
- status = ocfs2_inode_lock_nested(inode2, bh2, 1,
- OI_LS_RENAME1);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- goto bail;
- }
- }
-
- /* lock id1 */
- status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2);
- if (status < 0) {
- /*
- * An error return must mean that no cluster locks
- * were held on function exit.
- */
- if (oi1->ip_blkno != oi2->ip_blkno) {
- ocfs2_inode_unlock(inode2, 1);
- brelse(*bh2);
- *bh2 = NULL;
- }
-
- if (status != -ENOENT)
- mlog_errno(status);
- }
-
- trace_ocfs2_double_lock_end(
- (unsigned long long)OCFS2_I(inode1)->ip_blkno,
- (unsigned long long)OCFS2_I(inode2)->ip_blkno);
-
-bail:
- if (status)
- mlog_errno(status);
- return status;
-}
-
-static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
-{
- ocfs2_inode_unlock(inode1, 1);
-
- if (inode1 != inode2)
- ocfs2_inode_unlock(inode2, 1);
-}
-
-static int ocfs2_rename(struct inode *old_dir,
- struct dentry *old_dentry,
- struct inode *new_dir,
- struct dentry *new_dentry)
-{
- 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;
- struct ocfs2_dinode *newfe = NULL;
- char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
- struct buffer_head *newfe_bh = NULL;
- struct buffer_head *old_inode_bh = NULL;
- struct ocfs2_super *osb = NULL;
- u64 newfe_blkno, old_de_ino;
- handle_t *handle = NULL;
- struct buffer_head *old_dir_bh = NULL;
- struct buffer_head *new_dir_bh = NULL;
- u32 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. */
-
- trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry,
- old_dentry->d_name.len, old_dentry->d_name.name,
- new_dentry->d_name.len, new_dentry->d_name.name);
-
- dquot_initialize(old_dir);
- dquot_initialize(new_dir);
-
- osb = OCFS2_SB(old_dir->i_sb);
-
- if (new_inode) {
- if (!igrab(new_inode))
- BUG();
- }
-
- /* Assume a directory hierarchy thusly:
- * a/b/c
- * a/d
- * a,b,c, and d are all directories.
- *
- * from cwd of 'a' on both nodes:
- * node1: mv b/c d
- * node2: mv d b/c
- *
- * And that's why, just like the VFS, we need a file system
- * rename lock. */
- if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
- status = ocfs2_rename_lock(osb);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- rename_lock = 1;
- }
-
- /* if old and new are the same, this'll just do one lock. */
- status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
- &new_dir_bh, new_dir);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- parents_locked = 1;
-
- /* make sure both dirs have bhs
- * get an extra ref on old_dir_bh if old==new */
- if (!new_dir_bh) {
- if (old_dir_bh) {
- new_dir_bh = old_dir_bh;
- get_bh(new_dir_bh);
- } else {
- mlog(ML_ERROR, "no old_dir_bh!\n");
- status = -EIO;
- goto bail;
- }
- }
-
- /*
- * Aside from allowing a meta data update, the locking here
- * also ensures that the downconvert thread on other nodes
- * won't have to concurrently downconvert the inode and the
- * dentry locks.
- */
- status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
- OI_LS_PARENT);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- goto bail;
- }
- old_child_locked = 1;
-
- status = ocfs2_remote_dentry_delete(old_dentry);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- 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_dot_dot_res);
- if (status) {
- status = -EIO;
- goto bail;
- }
-
- if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
- status = -EIO;
- goto bail;
- }
-
- if (!new_inode && new_dir != old_dir &&
- new_dir->i_nlink >= ocfs2_link_max(osb)) {
- status = -EMLINK;
- goto bail;
- }
- }
-
- status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
- old_dentry->d_name.len,
- &old_de_ino);
- if (status) {
- status = -ENOENT;
- goto bail;
- }
-
- /*
- * Check for inode number is _not_ due to possible IO errors.
- * We might rmdir the source, keep it as pwd of some process
- * and merrily kill the link to whatever was created under the
- * same name. Goodbye sticky bit ;-<
- */
- if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
- status = -ENOENT;
- goto bail;
- }
-
- /* check if the target already exists (in which case we need
- * to delete it */
- status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
- new_dentry->d_name.len,
- &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)) {
- /* If we cannot find the file specified we should just */
- /* return the error... */
- mlog_errno(status);
- goto bail;
- }
- if (status == 0)
- target_exists = 1;
-
- if (!target_exists && new_inode) {
- /*
- * Target was unlinked by another node while we were
- * waiting to get to ocfs2_rename(). There isn't
- * anything we can do here to help the situation, so
- * bubble up the appropriate error.
- */
- status = -ENOENT;
- goto bail;
- }
-
- /* In case we need to overwrite an existing file, we blow it
- * away first */
- 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
- * the future we should consider calling iget to build
- * a new struct inode for this entry. */
- if (!new_inode) {
- status = -EACCES;
-
- trace_ocfs2_rename_target_exists(new_dentry->d_name.len,
- new_dentry->d_name.name);
- goto bail;
- }
-
- if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
- status = -EACCES;
-
- trace_ocfs2_rename_disagree(
- (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
- (unsigned long long)newfe_blkno,
- OCFS2_I(new_inode)->ip_flags);
- goto bail;
- }
-
- status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- goto bail;
- }
- new_child_locked = 1;
-
- status = ocfs2_remote_dentry_delete(new_dentry);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
-
- trace_ocfs2_rename_over_existing(
- (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
- (unsigned long long)newfe_bh->b_blocknr : 0ULL);
-
- if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
- status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
- OCFS2_I(new_inode)->ip_blkno,
- orphan_name, &orphan_insert);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- }
- } else {
- BUG_ON(new_dentry->d_parent->d_inode != new_dir);
-
- status = ocfs2_check_dir_for_entry(new_dir,
- new_dentry->d_name.name,
- new_dentry->d_name.len);
- if (status)
- goto bail;
-
- status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
- new_dentry->d_name.name,
- new_dentry->d_name.len,
- &target_insert);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- }
-
- handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
- if (IS_ERR(handle)) {
- status = PTR_ERR(handle);
- handle = NULL;
- mlog_errno(status);
- goto bail;
- }
-
- if (target_exists) {
- if (S_ISDIR(new_inode->i_mode)) {
- if (new_inode->i_nlink != 2 ||
- !ocfs2_empty_dir(new_inode)) {
- status = -ENOTEMPTY;
- goto bail;
- }
- }
- status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
- newfe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- if (S_ISDIR(new_inode->i_mode) ||
- (ocfs2_read_links_count(newfe) == 1)) {
- status = ocfs2_orphan_add(osb, handle, new_inode,
- newfe_bh, orphan_name,
- &orphan_insert, orphan_dir);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- }
-
- /* change the dirent to point to the correct inode */
- status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
- old_inode);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- new_dir->i_version++;
-
- if (S_ISDIR(new_inode->i_mode))
- ocfs2_set_links_count(newfe, 0);
- else
- ocfs2_add_links_count(newfe, -1);
- ocfs2_journal_dirty(handle, newfe_bh);
- } else {
- /* 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, &target_insert);
- }
-
- old_inode->i_ctime = CURRENT_TIME;
- mark_inode_dirty(old_inode);
-
- 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;
-
- old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
- old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
- ocfs2_journal_dirty(handle, old_inode_bh);
- } else
- mlog_errno(status);
-
- /*
- * Now that the name has been added to new_dir, remove the old name.
- *
- * We don't keep any directory entry context around until now
- * because the insert might have changed the type of directory
- * we're dealing with.
- */
- 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_entry_lookup);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- if (new_inode) {
- drop_nlink(new_inode);
- new_inode->i_ctime = CURRENT_TIME;
- }
- old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
-
- if (update_dot_dot) {
- status = ocfs2_update_entry(old_inode, handle,
- &old_inode_dot_dot_res, new_dir);
- drop_nlink(old_dir);
- if (new_inode) {
- drop_nlink(new_inode);
- } else {
- inc_nlink(new_dir);
- mark_inode_dirty(new_dir);
- }
- }
- mark_inode_dirty(old_dir);
- ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
- if (new_inode) {
- mark_inode_dirty(new_inode);
- ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
- }
-
- if (old_dir != new_dir) {
- /* Keep the same times on both directories.*/
- new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
-
- /*
- * This will also pick up the i_nlink change from the
- * block above.
- */
- ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
- }
-
- if (old_dir_nlink != old_dir->i_nlink) {
- if (!old_dir_bh) {
- mlog(ML_ERROR, "need to change nlink for old dir "
- "%llu from %d to %d but bh is NULL!\n",
- (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
- (int)old_dir_nlink, old_dir->i_nlink);
- } else {
- struct ocfs2_dinode *fe;
- 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);
- ocfs2_journal_dirty(handle, old_dir_bh);
- }
- }
- ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
- status = 0;
-bail:
- if (rename_lock)
- ocfs2_rename_unlock(osb);
-
- if (handle)
- ocfs2_commit_trans(osb, handle);
-
- if (parents_locked)
- ocfs2_double_unlock(old_dir, new_dir);
-
- if (old_child_locked)
- ocfs2_inode_unlock(old_inode, 1);
-
- if (new_child_locked)
- ocfs2_inode_unlock(new_inode, 1);
-
- 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 (new_inode)
- sync_mapping_buffers(old_inode->i_mapping);
-
- 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);
-
- if (status)
- mlog_errno(status);
-
- return status;
-}
-
-/*
- * we expect i_size = strlen(symname). Copy symname into the file
- * data, including the null terminator.
- */
-static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *inode,
- const char *symname)
-{
- struct buffer_head **bhs = NULL;
- const char *c;
- struct super_block *sb = osb->sb;
- u64 p_blkno, p_blocks;
- int virtual, blocks, status, i, bytes_left;
-
- bytes_left = i_size_read(inode) + 1;
- /* we can't trust i_blocks because we're actually going to
- * write i_size + 1 bytes. */
- blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
-
- trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks,
- i_size_read(inode), blocks);
-
- /* Sanity check -- make sure we're going to fit. */
- if (bytes_left >
- ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
- status = -EIO;
- mlog_errno(status);
- goto bail;
- }
-
- bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
- if (!bhs) {
- status = -ENOMEM;
- mlog_errno(status);
- goto bail;
- }
-
- status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
- NULL);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- /* links can never be larger than one cluster so we know this
- * is all going to be contiguous, but do a sanity check
- * anyway. */
- if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
- status = -EIO;
- mlog_errno(status);
- goto bail;
- }
-
- virtual = 0;
- while(bytes_left > 0) {
- c = &symname[virtual * sb->s_blocksize];
-
- bhs[virtual] = sb_getblk(sb, p_blkno);
- if (!bhs[virtual]) {
- status = -ENOMEM;
- mlog_errno(status);
- goto bail;
- }
- ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
- bhs[virtual]);
-
- status = ocfs2_journal_access(handle, INODE_CACHE(inode),
- bhs[virtual],
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
-
- memcpy(bhs[virtual]->b_data, c,
- (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
- bytes_left);
-
- ocfs2_journal_dirty(handle, bhs[virtual]);
-
- virtual++;
- p_blkno++;
- bytes_left -= sb->s_blocksize;
- }
-
- status = 0;
-bail:
-
- if (bhs) {
- for(i = 0; i < blocks; i++)
- brelse(bhs[i]);
- kfree(bhs);
- }
-
- if (status)
- mlog_errno(status);
- return status;
-}
-
-static int ocfs2_symlink(struct inode *dir,
- struct dentry *dentry,
- const char *symname)
-{
- int status, l, credits;
- u64 newsize;
- struct ocfs2_super *osb = NULL;
- struct inode *inode = NULL;
- struct super_block *sb;
- struct buffer_head *new_fe_bh = NULL;
- struct buffer_head *parent_fe_bh = NULL;
- struct ocfs2_dinode *fe = NULL;
- struct ocfs2_dinode *dirfe;
- handle_t *handle = NULL;
- struct ocfs2_alloc_context *inode_ac = NULL;
- struct ocfs2_alloc_context *data_ac = NULL;
- struct ocfs2_alloc_context *xattr_ac = NULL;
- int want_clusters = 0;
- int xattr_credits = 0;
- struct ocfs2_security_xattr_info si = {
- .enable = 1,
- };
- int did_quota = 0, did_quota_inode = 0;
- struct ocfs2_dir_lookup_result lookup = { NULL, };
- sigset_t oldset;
- int did_block_signals = 0;
-
- trace_ocfs2_symlink_begin(dir, dentry, symname,
- dentry->d_name.len, dentry->d_name.name);
-
- dquot_initialize(dir);
-
- sb = dir->i_sb;
- osb = OCFS2_SB(sb);
-
- l = strlen(symname) + 1;
-
- credits = ocfs2_calc_symlink_credits(sb);
-
- /* lock the parent directory */
- status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- return status;
- }
-
- dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
- if (!ocfs2_read_links_count(dirfe)) {
- /* can't make a file in a deleted directory. */
- status = -ENOENT;
- goto bail;
- }
-
- status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
- dentry->d_name.len);
- if (status)
- goto bail;
-
- status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
- dentry->d_name.name,
- dentry->d_name.len, &lookup);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- status = ocfs2_reserve_new_inode(osb, &inode_ac);
- if (status < 0) {
- if (status != -ENOSPC)
- mlog_errno(status);
- goto bail;
- }
-
- inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
- if (!inode) {
- status = -ENOMEM;
- mlog_errno(status);
- goto bail;
- }
-
- /* get security xattr */
- status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
- if (status) {
- if (status == -EOPNOTSUPP)
- si.enable = 0;
- else {
- mlog_errno(status);
- goto bail;
- }
- }
-
- /* calculate meta data/clusters for setting security xattr */
- if (si.enable) {
- status = ocfs2_calc_security_init(dir, &si, &want_clusters,
- &xattr_credits, &xattr_ac);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- }
-
- /* don't reserve bitmap space for fast symlinks. */
- if (l > ocfs2_fast_symlink_chars(sb))
- want_clusters += 1;
-
- status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
- if (status < 0) {
- if (status != -ENOSPC)
- mlog_errno(status);
- goto bail;
- }
-
- handle = ocfs2_start_trans(osb, credits + xattr_credits);
- if (IS_ERR(handle)) {
- status = PTR_ERR(handle);
- handle = NULL;
- mlog_errno(status);
- goto bail;
- }
-
- /* Starting to change things, restart is no longer possible. */
- ocfs2_block_signals(&oldset);
- did_block_signals = 1;
-
- status = dquot_alloc_inode(inode);
- if (status)
- goto bail;
- did_quota_inode = 1;
-
- trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len,
- dentry->d_name.name,
- (unsigned long long)OCFS2_I(dir)->ip_blkno,
- inode->i_mode);
-
- status = ocfs2_mknod_locked(osb, dir, inode,
- 0, &new_fe_bh, parent_fe_bh, handle,
- inode_ac);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
- inode->i_rdev = 0;
- newsize = l - 1;
- if (l > ocfs2_fast_symlink_chars(sb)) {
- u32 offset = 0;
-
- inode->i_op = &ocfs2_symlink_inode_operations;
- status = dquot_alloc_space_nodirty(inode,
- ocfs2_clusters_to_bytes(osb->sb, 1));
- if (status)
- goto bail;
- did_quota = 1;
- status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
- new_fe_bh,
- handle, data_ac, NULL,
- NULL);
- if (status < 0) {
- if (status != -ENOSPC && status != -EINTR) {
- mlog(ML_ERROR,
- "Failed to extend file to %llu\n",
- (unsigned long long)newsize);
- mlog_errno(status);
- status = -ENOSPC;
- }
- goto bail;
- }
- i_size_write(inode, newsize);
- inode->i_blocks = ocfs2_inode_sector_count(inode);
- } else {
- inode->i_op = &ocfs2_fast_symlink_inode_operations;
- memcpy((char *) fe->id2.i_symlink, symname, l);
- i_size_write(inode, newsize);
- inode->i_blocks = 0;
- }
-
- status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- if (!ocfs2_inode_is_fast_symlink(inode)) {
- status = ocfs2_create_symlink_data(osb, handle, inode,
- symname);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- }
-
- if (si.enable) {
- status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
- xattr_ac, data_ac);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- }
-
- /*
- * Do this before adding the entry to the directory. We add
- * also set d_op after success so that ->d_iput() will cleanup
- * the dentry lock even if ocfs2_add_entry() fails below.
- */
- status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
- if (status) {
- mlog_errno(status);
- goto bail;
- }
-
- status = ocfs2_add_entry(handle, dentry, inode,
- le64_to_cpu(fe->i_blkno), parent_fe_bh,
- &lookup);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- insert_inode_hash(inode);
- d_instantiate(dentry, inode);
-bail:
- if (status < 0 && did_quota)
- dquot_free_space_nodirty(inode,
- ocfs2_clusters_to_bytes(osb->sb, 1));
- if (status < 0 && did_quota_inode)
- dquot_free_inode(inode);
- if (handle)
- ocfs2_commit_trans(osb, handle);
-
- ocfs2_inode_unlock(dir, 1);
- if (did_block_signals)
- ocfs2_unblock_signals(&oldset);
-
- brelse(new_fe_bh);
- brelse(parent_fe_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)
- ocfs2_free_alloc_context(data_ac);
- if (xattr_ac)
- ocfs2_free_alloc_context(xattr_ac);
- if ((status < 0) && inode) {
- OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
- clear_nlink(inode);
- iput(inode);
- }
-
- if (status)
- mlog_errno(status);
-
- return status;
-}
-
-static int ocfs2_blkno_stringify(u64 blkno, char *name)
-{
- int status, namelen;
-
- namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
- (long long)blkno);
- if (namelen <= 0) {
- if (namelen)
- status = namelen;
- else
- status = -EINVAL;
- mlog_errno(status);
- goto bail;
- }
- if (namelen != OCFS2_ORPHAN_NAMELEN) {
- status = -EINVAL;
- mlog_errno(status);
- goto bail;
- }
-
- trace_ocfs2_blkno_stringify(blkno, name, namelen);
-
- status = 0;
-bail:
- if (status < 0)
- mlog_errno(status);
- return status;
-}
-
-static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb,
- struct inode **ret_orphan_dir,
- struct buffer_head **ret_orphan_dir_bh)
-{
- struct inode *orphan_dir_inode;
- struct buffer_head *orphan_dir_bh = NULL;
- int ret = 0;
-
- orphan_dir_inode = ocfs2_get_system_file_inode(osb,
- ORPHAN_DIR_SYSTEM_INODE,
- osb->slot_num);
- if (!orphan_dir_inode) {
- ret = -ENOENT;
- mlog_errno(ret);
- return ret;
- }
-
- mutex_lock(&orphan_dir_inode->i_mutex);
-
- ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
- if (ret < 0) {
- mutex_unlock(&orphan_dir_inode->i_mutex);
- iput(orphan_dir_inode);
-
- mlog_errno(ret);
- return ret;
- }
-
- *ret_orphan_dir = orphan_dir_inode;
- *ret_orphan_dir_bh = orphan_dir_bh;
-
- return 0;
-}
-
-static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode,
- struct buffer_head *orphan_dir_bh,
- u64 blkno,
- char *name,
- struct ocfs2_dir_lookup_result *lookup)
-{
- int ret;
- struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb);
-
- ret = ocfs2_blkno_stringify(blkno, name);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
- }
-
- ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
- orphan_dir_bh, name,
- OCFS2_ORPHAN_NAMELEN, lookup);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
- }
-
- return 0;
-}
-
-/**
- * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for
- * insertion of an orphan.
- * @osb: ocfs2 file system
- * @ret_orphan_dir: Orphan dir inode - returned locked!
- * @blkno: Actual block number of the inode to be inserted into orphan dir.
- * @lookup: dir lookup result, to be passed back into functions like
- * ocfs2_orphan_add
- *
- * Returns zero on success and the ret_orphan_dir, name and lookup
- * fields will be populated.
- *
- * Returns non-zero on failure.
- */
-static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
- struct inode **ret_orphan_dir,
- u64 blkno,
- char *name,
- struct ocfs2_dir_lookup_result *lookup)
-{
- struct inode *orphan_dir_inode = NULL;
- struct buffer_head *orphan_dir_bh = NULL;
- int ret = 0;
-
- ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode,
- &orphan_dir_bh);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
- }
-
- ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh,
- blkno, name, lookup);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
-
- *ret_orphan_dir = orphan_dir_inode;
-
-out:
- brelse(orphan_dir_bh);
-
- if (ret) {
- ocfs2_inode_unlock(orphan_dir_inode, 1);
- mutex_unlock(&orphan_dir_inode->i_mutex);
- iput(orphan_dir_inode);
- }
-
- if (ret)
- mlog_errno(ret);
- return ret;
-}
-
-static int ocfs2_orphan_add(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *inode,
- struct buffer_head *fe_bh,
- char *name,
- struct ocfs2_dir_lookup_result *lookup,
- struct inode *orphan_dir_inode)
-{
- struct buffer_head *orphan_dir_bh = NULL;
- int status = 0;
- struct ocfs2_dinode *orphan_fe;
- struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
-
- trace_ocfs2_orphan_add_begin(
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
-
- status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- status = ocfs2_journal_access_di(handle,
- INODE_CACHE(orphan_dir_inode),
- orphan_dir_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- /* we're a cluster, and nlink can change on disk from
- * underneath us... */
- orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
- if (S_ISDIR(inode->i_mode))
- ocfs2_add_links_count(orphan_fe, 1);
- set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
- ocfs2_journal_dirty(handle, orphan_dir_bh);
-
- status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
- OCFS2_ORPHAN_NAMELEN, inode,
- OCFS2_I(inode)->ip_blkno,
- orphan_dir_bh, lookup);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- /*
- * We're going to journal the change of i_flags and i_orphaned_slot.
- * It's safe anyway, though some callers may duplicate the journaling.
- * Journaling within the func just make the logic look more
- * straightforward.
- */
- status = ocfs2_journal_access_di(handle,
- INODE_CACHE(inode),
- fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL);
- OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR;
-
- /* Record which orphan dir our inode now resides
- * in. delete_inode will use this to determine which orphan
- * dir to lock. */
- fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
-
- ocfs2_journal_dirty(handle, fe_bh);
-
- trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
- osb->slot_num);
-
-leave:
- brelse(orphan_dir_bh);
-
- if (status)
- mlog_errno(status);
- return status;
-}
-
-/* unlike orphan_add, we expect the orphan dir to already be locked here. */
-int ocfs2_orphan_del(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *orphan_dir_inode,
- struct inode *inode,
- struct buffer_head *orphan_dir_bh)
-{
- char name[OCFS2_ORPHAN_NAMELEN + 1];
- struct ocfs2_dinode *orphan_fe;
- int status = 0;
- struct ocfs2_dir_lookup_result lookup = { NULL, };
-
- status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- trace_ocfs2_orphan_del(
- (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
- name, OCFS2_ORPHAN_NAMELEN);
-
- /* find it's spot in the orphan directory */
- 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, &lookup);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- status = ocfs2_journal_access_di(handle,
- INODE_CACHE(orphan_dir_inode),
- orphan_dir_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- /* do the i_nlink dance! :) */
- orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
- if (S_ISDIR(inode->i_mode))
- ocfs2_add_links_count(orphan_fe, -1);
- set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
- ocfs2_journal_dirty(handle, orphan_dir_bh);
-
-leave:
- ocfs2_free_dir_lookup_result(&lookup);
-
- if (status)
- mlog_errno(status);
- return status;
-}
-
-/**
- * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly
- * allocated file. This is different from the typical 'add to orphan dir'
- * operation in that the inode does not yet exist. This is a problem because
- * the orphan dir stringifies the inode block number to come up with it's
- * dirent. Obviously if the inode does not yet exist we have a chicken and egg
- * problem. This function works around it by calling deeper into the orphan
- * and suballoc code than other callers. Use this only by necessity.
- * @dir: The directory which this inode will ultimately wind up under - not the
- * orphan dir!
- * @dir_bh: buffer_head the @dir inode block
- * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled
- * with the string to be used for orphan dirent. Pass back to the orphan dir
- * code.
- * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan
- * dir code.
- * @ret_di_blkno: block number where the new inode will be allocated.
- * @orphan_insert: Dir insert context to be passed back into orphan dir code.
- * @ret_inode_ac: Inode alloc context to be passed back to the allocator.
- *
- * Returns zero on success and the ret_orphan_dir, name and lookup
- * fields will be populated.
- *
- * Returns non-zero on failure.
- */
-static int ocfs2_prep_new_orphaned_file(struct inode *dir,
- struct buffer_head *dir_bh,
- char *orphan_name,
- struct inode **ret_orphan_dir,
- u64 *ret_di_blkno,
- struct ocfs2_dir_lookup_result *orphan_insert,
- struct ocfs2_alloc_context **ret_inode_ac)
-{
- int ret;
- u64 di_blkno;
- struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
- struct inode *orphan_dir = NULL;
- struct buffer_head *orphan_dir_bh = NULL;
- struct ocfs2_alloc_context *inode_ac = NULL;
-
- ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
- }
-
- /* reserve an inode spot */
- ret = ocfs2_reserve_new_inode(osb, &inode_ac);
- if (ret < 0) {
- if (ret != -ENOSPC)
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac,
- &di_blkno);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
- ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh,
- di_blkno, orphan_name, orphan_insert);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
-
-out:
- if (ret == 0) {
- *ret_orphan_dir = orphan_dir;
- *ret_di_blkno = di_blkno;
- *ret_inode_ac = inode_ac;
- /*
- * orphan_name and orphan_insert are already up to
- * date via prepare_orphan_dir
- */
- } else {
- /* Unroll reserve_new_inode* */
- if (inode_ac)
- ocfs2_free_alloc_context(inode_ac);
-
- /* Unroll orphan dir locking */
- mutex_unlock(&orphan_dir->i_mutex);
- ocfs2_inode_unlock(orphan_dir, 1);
- iput(orphan_dir);
- }
-
- brelse(orphan_dir_bh);
-
- return 0;
-}
-
-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, };
- u64 uninitialized_var(di_blkno), suballoc_loc;
- u16 suballoc_bit;
-
- status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
- if (status < 0) {
- if (status != -ENOENT)
- mlog_errno(status);
- return status;
- }
-
- status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh,
- orphan_name, &orphan_dir,
- &di_blkno, &orphan_insert, &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;
- }
-
- status = dquot_alloc_inode(inode);
- if (status)
- goto leave;
- did_quota_inode = 1;
-
- status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac,
- &suballoc_loc,
- &suballoc_bit, di_blkno);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- clear_nlink(inode);
- /* do the real work now. */
- status = __ocfs2_mknod_locked(dir, inode,
- 0, &new_di_bh, parent_di_bh, handle,
- inode_ac, di_blkno, suballoc_loc,
- suballoc_bit);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
- di = (struct ocfs2_dinode *)new_di_bh->b_data;
- status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, 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);
-
- insert_inode_hash(inode);
-leave:
- if (status < 0 && did_quota_inode)
- dquot_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 < 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, };
-
- trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry,
- dentry->d_name.len, dentry->d_name.name,
- (unsigned long long)OCFS2_I(dir)->ip_blkno,
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
-
- 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;
- set_nlink(inode, 1);
- ocfs2_set_links_count(di, inode->i_nlink);
- 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;
- }
-
- 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);
-
- if (status)
- mlog_errno(status);
-
- return status;
-}
-
-const struct inode_operations ocfs2_dir_iops = {
- .create = ocfs2_create,
- .lookup = ocfs2_lookup,
- .link = ocfs2_link,
- .unlink = ocfs2_unlink,
- .rmdir = ocfs2_unlink,
- .symlink = ocfs2_symlink,
- .mkdir = ocfs2_mkdir,
- .mknod = ocfs2_mknod,
- .rename = ocfs2_rename,
- .setattr = ocfs2_setattr,
- .getattr = ocfs2_getattr,
- .permission = ocfs2_permission,
- .setxattr = generic_setxattr,
- .getxattr = generic_getxattr,
- .listxattr = ocfs2_listxattr,
- .removexattr = generic_removexattr,
- .fiemap = ocfs2_fiemap,
- .get_acl = ocfs2_iop_get_acl,
-};