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Diffstat (limited to 'fs/ocfs2/namei.c')
-rw-r--r--fs/ocfs2/namei.c987
1 files changed, 659 insertions, 328 deletions
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 50fb26a6a5f..8add6f1030d 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -42,7 +42,6 @@
#include <linux/highmem.h>
#include <linux/quotaops.h>
-#define MLOG_MASK_PREFIX ML_NAMEI
#include <cluster/masklog.h>
#include "ocfs2.h"
@@ -63,6 +62,7 @@
#include "uptodate.h"
#include "xattr.h"
#include "acl.h"
+#include "ocfs2_trace.h"
#include "buffer_head_io.h"
@@ -84,7 +84,7 @@ static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
static int ocfs2_orphan_add(struct ocfs2_super *osb,
handle_t *handle,
struct inode *inode,
- struct ocfs2_dinode *fe,
+ struct buffer_head *fe_bh,
char *name,
struct ocfs2_dir_lookup_result *lookup,
struct inode *orphan_dir_inode);
@@ -98,7 +98,7 @@ static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ unsigned int flags)
{
int status;
u64 blkno;
@@ -106,17 +106,15 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
struct dentry *ret;
struct ocfs2_inode_info *oi;
- mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
- dentry->d_name.len, dentry->d_name.name);
+ 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;
}
- mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len,
- dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno);
-
status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
if (status < 0) {
if (status != -ENOENT)
@@ -147,7 +145,6 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
spin_unlock(&oi->ip_lock);
bail_add:
- dentry->d_op = &ocfs2_dentry_ops;
ret = d_splice_alias(inode, dentry);
if (inode) {
@@ -171,7 +168,8 @@ bail_add:
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 --
@@ -182,12 +180,12 @@ bail_unlock:
bail:
- mlog_exit_ptr(ret);
+ trace_ocfs2_lookup_ret(ret);
return ret;
}
-static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode)
+static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
{
struct inode *inode;
@@ -201,24 +199,30 @@ static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode)
* these are used by the support functions here and in
* callers. */
if (S_ISDIR(mode))
- inode->i_nlink = 2;
- else
- inode->i_nlink = 1;
- inode->i_uid = current_fsuid();
- if (dir->i_mode & S_ISGID) {
- inode->i_gid = dir->i_gid;
- if (S_ISDIR(mode))
- mode |= S_ISGID;
- } else
- inode->i_gid = current_fsgid();
- inode->i_mode = mode;
- vfs_dq_init(inode);
+ set_nlink(inode, 2);
+ inode_init_owner(inode, dir, mode);
+ dquot_initialize(inode);
return inode;
}
+static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb,
+ struct dentry *dentry, struct inode *inode)
+{
+ struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
+
+ ocfs2_simple_drop_lockres(osb, &dl->dl_lockres);
+ ocfs2_lock_res_free(&dl->dl_lockres);
+ BUG_ON(dl->dl_count != 1);
+ spin_lock(&dentry_attach_lock);
+ dentry->d_fsdata = NULL;
+ spin_unlock(&dentry_attach_lock);
+ kfree(dl);
+ iput(inode);
+}
+
static int ocfs2_mknod(struct inode *dir,
struct dentry *dentry,
- int mode,
+ umode_t mode,
dev_t dev)
{
int status = 0;
@@ -239,10 +243,16 @@ static int ocfs2_mknod(struct inode *dir,
};
int did_quota_inode = 0;
struct ocfs2_dir_lookup_result lookup = { NULL, };
+ sigset_t oldset;
+ int did_block_signals = 0;
+ struct posix_acl *default_acl = NULL, *acl = NULL;
+ struct ocfs2_dentry_lock *dl = NULL;
+
+ 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);
- mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
- (unsigned long)dev, dentry->d_name.len,
- dentry->d_name.name);
+ dquot_initialize(dir);
/* get our super block */
osb = OCFS2_SB(dir->i_sb);
@@ -296,7 +306,7 @@ static int ocfs2_mknod(struct inode *dir,
}
/* get security xattr */
- status = ocfs2_init_security_get(inode, dir, &si);
+ status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
if (status) {
if (status == -EOPNOTSUPP)
si.enable = 0;
@@ -338,6 +348,12 @@ static int ocfs2_mknod(struct inode *dir,
goto leave;
}
+ status = posix_acl_create(dir, &mode, &default_acl, &acl);
+ if (status) {
+ mlog_errno(status);
+ goto leave;
+ }
+
handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
S_ISDIR(mode),
xattr_credits));
@@ -348,19 +364,15 @@ static int ocfs2_mknod(struct inode *dir,
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;
+ /* 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;
- 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, dev,
&new_fe_bh, parent_fe_bh, handle,
@@ -386,16 +398,21 @@ static int ocfs2_mknod(struct inode *dir,
goto leave;
}
ocfs2_add_links_count(dirfe, 1);
- status = ocfs2_journal_dirty(handle, parent_fe_bh);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
+ 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 (default_acl) {
+ status = ocfs2_set_acl(handle, inode, new_fe_bh,
+ ACL_TYPE_DEFAULT, default_acl,
+ meta_ac, data_ac);
+ }
+ if (!status && acl) {
+ status = ocfs2_set_acl(handle, inode, new_fe_bh,
+ ACL_TYPE_ACCESS, acl,
+ meta_ac, data_ac);
+ }
+
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -410,48 +427,51 @@ static int ocfs2_mknod(struct inode *dir,
}
}
- status = ocfs2_add_entry(handle, dentry, inode,
- OCFS2_I(inode)->ip_blkno, parent_fe_bh,
- &lookup);
- if (status < 0) {
+ /*
+ * 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_dentry_attach_lock(dentry, inode,
- OCFS2_I(dir)->ip_blkno);
- if (status) {
+ dl = dentry->d_fsdata;
+
+ 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);
- dentry->d_op = &ocfs2_dentry_ops;
d_instantiate(dentry, inode);
status = 0;
leave:
+ if (default_acl)
+ posix_acl_release(default_acl);
+ if (acl)
+ posix_acl_release(acl);
if (status < 0 && did_quota_inode)
- vfs_dq_free_inode(inode);
+ dquot_free_inode(inode);
if (handle)
ocfs2_commit_trans(osb, handle);
ocfs2_inode_unlock(dir, 1);
-
- if (status == -ENOSPC)
- mlog(0, "Disk is full\n");
+ 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 ((status < 0) && inode) {
- clear_nlink(inode);
- iput(inode);
- }
-
if (inode_ac)
ocfs2_free_alloc_context(inode_ac);
@@ -461,36 +481,44 @@ leave:
if (meta_ac)
ocfs2_free_alloc_context(meta_ac);
- mlog_exit(status);
+ /*
+ * 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) {
+ if (dl)
+ ocfs2_cleanup_add_entry_failure(osb, dentry, 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 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_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;
- u64 fe_blkno = 0;
- u16 suballoc_bit;
u16 feat;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
*new_fe_bh = NULL;
- status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh,
- inode_ac, &suballoc_bit, &fe_blkno);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
-
/* populate as many fields early on as possible - many of
* these are used by the support functions here and in
* callers. */
@@ -502,7 +530,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
*new_fe_bh = sb_getblk(osb->sb, fe_blkno);
if (!*new_fe_bh) {
- status = -EIO;
+ status = -ENOMEM;
mlog_errno(status);
goto leave;
}
@@ -522,10 +550,11 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
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_uid = cpu_to_le32(i_uid_read(inode));
+ fe->i_gid = cpu_to_le32(i_gid_read(inode));
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));
@@ -534,7 +563,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
fe->i_last_eb_blk = 0;
strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
- le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL);
+ fe->i_flags |= cpu_to_le32(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 =
@@ -558,11 +587,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
}
- status = ocfs2_journal_dirty(handle, *new_fe_bh);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
+ ocfs2_journal_dirty(handle, *new_fe_bh);
ocfs2_populate_inode(inode, fe, 1);
ocfs2_ci_set_new(osb, INODE_CACHE(inode));
@@ -572,8 +597,8 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
mlog_errno(status);
}
- status = 0; /* error in ocfs2_create_new_inode_locks is not
- * critical */
+ oi->i_sync_tid = handle->h_transaction->t_tid;
+ oi->i_datasync_tid = handle->h_transaction->t_tid;
leave:
if (status < 0) {
@@ -583,35 +608,66 @@ leave:
}
}
- mlog_exit(status);
+ 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,
- int mode)
+ umode_t mode)
{
int ret;
- mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
- dentry->d_name.len, dentry->d_name.name);
+ 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);
- mlog_exit(ret);
+ if (ret)
+ mlog_errno(ret);
return ret;
}
static int ocfs2_create(struct inode *dir,
struct dentry *dentry,
- int mode,
- struct nameidata *nd)
+ umode_t mode,
+ bool excl)
{
int ret;
- mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
- dentry->d_name.len, dentry->d_name.name);
+ 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);
- mlog_exit(ret);
+ if (ret)
+ mlog_errno(ret);
return ret;
}
@@ -628,14 +684,18 @@ static int ocfs2_link(struct dentry *old_dentry,
struct ocfs2_dinode *fe = NULL;
struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
struct ocfs2_dir_lookup_result lookup = { NULL, };
+ sigset_t oldset;
+ u64 old_de_ino;
- mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino,
- old_dentry->d_name.len, old_dentry->d_name.name,
- dentry->d_name.len, dentry->d_name.name);
+ 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)
@@ -648,6 +708,22 @@ static int ocfs2_link(struct dentry *old_dentry,
goto out;
}
+ err = ocfs2_lookup_ino_from_name(dir, old_dentry->d_name.name,
+ old_dentry->d_name.len, &old_de_ino);
+ if (err) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ /*
+ * Check whether another node removed the source inode while we
+ * were in the vfs.
+ */
+ if (old_de_ino != OCFS2_I(inode)->ip_blkno) {
+ err = -ENOENT;
+ goto out;
+ }
+
err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
dentry->d_name.len);
if (err)
@@ -682,6 +758,9 @@ static int ocfs2_link(struct dentry *old_dentry,
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) {
@@ -694,14 +773,7 @@ static int ocfs2_link(struct dentry *old_dentry,
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);
-
- err = ocfs2_journal_dirty(handle, fe_bh);
- if (err < 0) {
- ocfs2_add_links_count(fe, -1);
- drop_nlink(inode);
- mlog_errno(err);
- goto out_commit;
- }
+ ocfs2_journal_dirty(handle, fe_bh);
err = ocfs2_add_entry(handle, dentry, inode,
OCFS2_I(inode)->ip_blkno,
@@ -719,12 +791,12 @@ static int ocfs2_link(struct dentry *old_dentry,
goto out_commit;
}
- atomic_inc(&inode->i_count);
- dentry->d_op = &ocfs2_dentry_ops;
+ 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);
@@ -736,7 +808,8 @@ out:
ocfs2_free_dir_lookup_result(&lookup);
- mlog_exit(err);
+ if (err)
+ mlog_errno(err);
return err;
}
@@ -758,7 +831,7 @@ static int ocfs2_remote_dentry_delete(struct dentry *dentry)
return ret;
}
-static inline int inode_is_unlinkable(struct inode *inode)
+static inline int ocfs2_inode_is_unlinkable(struct inode *inode)
{
if (S_ISDIR(inode->i_mode)) {
if (inode->i_nlink == 2)
@@ -776,6 +849,7 @@ static int ocfs2_unlink(struct inode *dir,
{
int status;
int child_locked = 0;
+ bool is_unlinkable = false;
struct inode *inode = dentry->d_inode;
struct inode *orphan_dir = NULL;
struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
@@ -788,17 +862,17 @@ static int ocfs2_unlink(struct inode *dir,
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);
+ 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);
- BUG_ON(dentry->d_parent->d_inode != dir);
+ dquot_initialize(dir);
- mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno);
+ BUG_ON(dentry->d_parent->d_inode != dir);
- if (inode == osb->root_inode) {
- mlog(0, "Cannot delete the root directory\n");
+ if (inode == osb->root_inode)
return -EPERM;
- }
status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
OI_LS_PARENT);
@@ -820,9 +894,10 @@ static int ocfs2_unlink(struct inode *dir,
if (OCFS2_I(inode)->ip_blkno != blkno) {
status = -ENOENT;
- mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno,
- (unsigned long long)blkno, OCFS2_I(inode)->ip_flags);
+ trace_ocfs2_unlink_noent(
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (unsigned long long)blkno,
+ OCFS2_I(inode)->ip_flags);
goto leave;
}
@@ -849,7 +924,7 @@ static int ocfs2_unlink(struct inode *dir,
goto leave;
}
- if (inode_is_unlinkable(inode)) {
+ if (ocfs2_inode_is_unlinkable(inode)) {
status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
OCFS2_I(inode)->ip_blkno,
orphan_name, &orphan_insert);
@@ -857,6 +932,7 @@ static int ocfs2_unlink(struct inode *dir,
mlog_errno(status);
goto leave;
}
+ is_unlinkable = true;
}
handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
@@ -876,15 +952,6 @@ static int ocfs2_unlink(struct inode *dir,
fe = (struct ocfs2_dinode *) fe_bh->b_data;
- if (inode_is_unlinkable(inode)) {
- status = ocfs2_orphan_add(osb, handle, inode, fe, 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) {
@@ -896,12 +963,7 @@ static int ocfs2_unlink(struct inode *dir,
drop_nlink(inode);
drop_nlink(inode);
ocfs2_set_links_count(fe, inode->i_nlink);
-
- status = ocfs2_journal_dirty(handle, fe_bh);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
+ ocfs2_journal_dirty(handle, fe_bh);
dir->i_ctime = dir->i_mtime = CURRENT_TIME;
if (S_ISDIR(inode->i_mode))
@@ -912,6 +974,14 @@ static int ocfs2_unlink(struct inode *dir,
mlog_errno(status);
if (S_ISDIR(inode->i_mode))
inc_nlink(dir);
+ goto leave;
+ }
+
+ if (is_unlinkable) {
+ status = ocfs2_orphan_add(osb, handle, inode, fe_bh,
+ orphan_name, &orphan_insert, orphan_dir);
+ if (status < 0)
+ mlog_errno(status);
}
leave:
@@ -936,11 +1006,71 @@ leave:
ocfs2_free_dir_lookup_result(&orphan_insert);
ocfs2_free_dir_lookup_result(&lookup);
- mlog_exit(status);
+ if (status && (status != -ENOTEMPTY) && (status != -ENOENT))
+ mlog_errno(status);
return status;
}
+static int ocfs2_check_if_ancestor(struct ocfs2_super *osb,
+ u64 src_inode_no, u64 dest_inode_no)
+{
+ int ret = 0, i = 0;
+ u64 parent_inode_no = 0;
+ u64 child_inode_no = src_inode_no;
+ struct inode *child_inode;
+
+#define MAX_LOOKUP_TIMES 32
+ while (1) {
+ child_inode = ocfs2_iget(osb, child_inode_no, 0, 0);
+ if (IS_ERR(child_inode)) {
+ ret = PTR_ERR(child_inode);
+ break;
+ }
+
+ ret = ocfs2_inode_lock(child_inode, NULL, 0);
+ if (ret < 0) {
+ iput(child_inode);
+ if (ret != -ENOENT)
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2,
+ &parent_inode_no);
+ ocfs2_inode_unlock(child_inode, 0);
+ iput(child_inode);
+ if (ret < 0) {
+ ret = -ENOENT;
+ break;
+ }
+
+ if (parent_inode_no == dest_inode_no) {
+ ret = 1;
+ break;
+ }
+
+ if (parent_inode_no == osb->root_inode->i_ino) {
+ ret = 0;
+ break;
+ }
+
+ child_inode_no = parent_inode_no;
+
+ if (++i >= MAX_LOOKUP_TIMES) {
+ mlog(ML_NOTICE, "max lookup times reached, filesystem "
+ "may have nested directories, "
+ "src inode: %llu, dest inode: %llu.\n",
+ (unsigned long long)src_inode_no,
+ (unsigned long long)dest_inode_no);
+ ret = 0;
+ break;
+ }
+ }
+
+ return ret;
+}
+
/*
* The only place this should be used is rename!
* if they have the same id, then the 1st one is the only one locked.
@@ -952,25 +1082,41 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
struct inode *inode2)
{
int status;
+ int inode1_is_ancestor, inode2_is_ancestor;
struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
struct buffer_head **tmpbh;
struct inode *tmpinode;
- mlog_entry("(inode1 = %llu, inode2 = %llu)\n",
- (unsigned long long)oi1->ip_blkno,
- (unsigned long long)oi2->ip_blkno);
+ 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. */
+ /* we always want to lock the one with the lower lockid first.
+ * and if they are nested, we lock ancestor first */
if (oi1->ip_blkno != oi2->ip_blkno) {
- if (oi1->ip_blkno < oi2->ip_blkno) {
+ inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno,
+ oi1->ip_blkno);
+ if (inode1_is_ancestor < 0) {
+ status = inode1_is_ancestor;
+ goto bail;
+ }
+
+ inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno,
+ oi2->ip_blkno);
+ if (inode2_is_ancestor < 0) {
+ status = inode2_is_ancestor;
+ goto bail;
+ }
+
+ if ((inode1_is_ancestor == 1) ||
+ (oi1->ip_blkno < oi2->ip_blkno &&
+ inode2_is_ancestor == 0)) {
/* switch id1 and id2 around */
- mlog(0, "switching them around...\n");
tmpbh = bh2;
bh2 = bh1;
bh1 = tmpbh;
@@ -996,15 +1142,23 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
* An error return must mean that no cluster locks
* were held on function exit.
*/
- if (oi1->ip_blkno != oi2->ip_blkno)
+ 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:
- mlog_exit(status);
+ if (status)
+ mlog_errno(status);
return status;
}
@@ -1035,21 +1189,24 @@ 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;
- nlink_t old_dir_nlink = old_dir->i_nlink;
+ 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, };
+ bool should_add_orphan = false;
/* At some point it might be nice to break this function up a
* bit. */
- mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n",
- 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);
+ 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);
@@ -1076,6 +1233,21 @@ static int ocfs2_rename(struct inode *old_dir,
goto bail;
}
rename_lock = 1;
+
+ /* here we cannot guarantee the inodes haven't just been
+ * changed, so check if they are nested again */
+ status = ocfs2_check_if_ancestor(osb, new_dir->i_ino,
+ old_inode->i_ino);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ } else if (status == 1) {
+ status = -EPERM;
+ trace_ocfs2_rename_not_permitted(
+ (unsigned long long)old_inode->i_ino,
+ (unsigned long long)new_dir->i_ino);
+ goto bail;
+ }
}
/* if old and new are the same, this'll just do one lock. */
@@ -1203,16 +1375,15 @@ static int ocfs2_rename(struct inode *old_dir,
if (!new_inode) {
status = -EACCES;
- mlog(0, "We found an inode for name %.*s but VFS "
- "didn't give us one.\n", new_dentry->d_name.len,
- new_dentry->d_name.name);
+ 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;
- mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n",
+ trace_ocfs2_rename_disagree(
(unsigned long long)OCFS2_I(new_inode)->ip_blkno,
(unsigned long long)newfe_blkno,
OCFS2_I(new_inode)->ip_flags);
@@ -1235,8 +1406,7 @@ static int ocfs2_rename(struct inode *old_dir,
newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
- mlog(0, "aha rename over existing... new_blkno=%llu "
- "newfebh=%p bhblocknr=%llu\n",
+ trace_ocfs2_rename_over_existing(
(unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
(unsigned long long)newfe_bh->b_blocknr : 0ULL);
@@ -1248,6 +1418,7 @@ static int ocfs2_rename(struct inode *old_dir,
mlog_errno(status);
goto bail;
}
+ should_add_orphan = true;
}
} else {
BUG_ON(new_dentry->d_parent->d_inode != new_dir);
@@ -1292,17 +1463,6 @@ static int ocfs2_rename(struct inode *old_dir,
goto bail;
}
- if (S_ISDIR(new_inode->i_mode) ||
- (ocfs2_read_links_count(newfe) == 1)) {
- status = ocfs2_orphan_add(osb, handle, new_inode,
- newfe, 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);
@@ -1316,11 +1476,15 @@ static int ocfs2_rename(struct inode *old_dir,
ocfs2_set_links_count(newfe, 0);
else
ocfs2_add_links_count(newfe, -1);
-
- status = ocfs2_journal_dirty(handle, newfe_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
+ ocfs2_journal_dirty(handle, newfe_bh);
+ if (should_add_orphan) {
+ status = ocfs2_orphan_add(osb, handle, new_inode,
+ newfe_bh, orphan_name,
+ &orphan_insert, orphan_dir);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
}
} else {
/* if the name was not found in new_dir, add it now */
@@ -1340,10 +1504,7 @@ static int ocfs2_rename(struct inode *old_dir,
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);
-
- status = ocfs2_journal_dirty(handle, old_inode_bh);
- if (status < 0)
- mlog_errno(status);
+ ocfs2_journal_dirty(handle, old_inode_bh);
} else
mlog_errno(status);
@@ -1367,7 +1528,7 @@ static int ocfs2_rename(struct inode *old_dir,
}
if (new_inode) {
- new_inode->i_nlink--;
+ drop_nlink(new_inode);
new_inode->i_ctime = CURRENT_TIME;
}
old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
@@ -1375,9 +1536,9 @@ static int ocfs2_rename(struct inode *old_dir,
if (update_dot_dot) {
status = ocfs2_update_entry(old_inode, handle,
&old_inode_dot_dot_res, new_dir);
- old_dir->i_nlink--;
+ drop_nlink(old_dir);
if (new_inode) {
- new_inode->i_nlink--;
+ drop_nlink(new_inode);
} else {
inc_nlink(new_dir);
mark_inode_dirty(new_dir);
@@ -1415,7 +1576,7 @@ static int ocfs2_rename(struct inode *old_dir,
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);
+ ocfs2_journal_dirty(handle, old_dir_bh);
}
}
ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
@@ -1460,7 +1621,8 @@ bail:
brelse(old_dir_bh);
brelse(new_dir_bh);
- mlog_exit(status);
+ if (status)
+ mlog_errno(status);
return status;
}
@@ -1485,9 +1647,8 @@ static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
* write i_size + 1 bytes. */
blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
- mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n",
- (unsigned long long)inode->i_blocks,
- i_size_read(inode), blocks);
+ 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 >
@@ -1547,11 +1708,7 @@ static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
(bytes_left > sb->s_blocksize) ? sb->s_blocksize :
bytes_left);
- status = ocfs2_journal_dirty(handle, bhs[virtual]);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
+ ocfs2_journal_dirty(handle, bhs[virtual]);
virtual++;
p_blkno++;
@@ -1567,7 +1724,8 @@ bail:
kfree(bhs);
}
- mlog_exit(status);
+ if (status)
+ mlog_errno(status);
return status;
}
@@ -1595,9 +1753,14 @@ static int ocfs2_symlink(struct inode *dir,
};
int did_quota = 0, did_quota_inode = 0;
struct ocfs2_dir_lookup_result lookup = { NULL, };
+ sigset_t oldset;
+ int did_block_signals = 0;
+ struct ocfs2_dentry_lock *dl = NULL;
+
+ trace_ocfs2_symlink_begin(dir, dentry, symname,
+ dentry->d_name.len, dentry->d_name.name);
- mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
- dentry, symname, dentry->d_name.len, dentry->d_name.name);
+ dquot_initialize(dir);
sb = dir->i_sb;
osb = OCFS2_SB(sb);
@@ -1649,7 +1812,7 @@ static int ocfs2_symlink(struct inode *dir,
}
/* get security xattr */
- status = ocfs2_init_security_get(inode, dir, &si);
+ status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
if (status) {
if (status == -EOPNOTSUPP)
si.enable = 0;
@@ -1688,18 +1851,19 @@ static int ocfs2_symlink(struct inode *dir,
goto bail;
}
- /* 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;
+ /* 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;
- mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry,
- inode->i_mode, dentry->d_name.len,
- dentry->d_name.name);
+ 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,
@@ -1712,16 +1876,16 @@ static int ocfs2_symlink(struct inode *dir,
fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
inode->i_rdev = 0;
newsize = l - 1;
+ inode->i_op = &ocfs2_symlink_inode_operations;
if (l > ocfs2_fast_symlink_chars(sb)) {
u32 offset = 0;
- inode->i_op = &ocfs2_symlink_inode_operations;
- if (vfs_dq_alloc_space_nodirty(inode,
- ocfs2_clusters_to_bytes(osb->sb, 1))) {
- status = -EDQUOT;
+ status = dquot_alloc_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, 1));
+ if (status)
goto bail;
- }
did_quota = 1;
+ inode->i_mapping->a_ops = &ocfs2_aops;
status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
new_fe_bh,
handle, data_ac, NULL,
@@ -1739,7 +1903,7 @@ static int ocfs2_symlink(struct inode *dir,
i_size_write(inode, newsize);
inode->i_blocks = ocfs2_inode_sector_count(inode);
} else {
- inode->i_op = &ocfs2_fast_symlink_inode_operations;
+ inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
memcpy((char *) fe->id2.i_symlink, symname, l);
i_size_write(inode, newsize);
inode->i_blocks = 0;
@@ -1769,37 +1933,44 @@ static int ocfs2_symlink(struct inode *dir,
}
}
- status = ocfs2_add_entry(handle, dentry, inode,
- le64_to_cpu(fe->i_blkno), parent_fe_bh,
- &lookup);
- if (status < 0) {
+ /*
+ * 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_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
- if (status) {
+ dl = dentry->d_fsdata;
+
+ 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);
- dentry->d_op = &ocfs2_dentry_ops;
d_instantiate(dentry, inode);
bail:
if (status < 0 && did_quota)
- vfs_dq_free_space_nodirty(inode,
+ dquot_free_space_nodirty(inode,
ocfs2_clusters_to_bytes(osb->sb, 1));
if (status < 0 && did_quota_inode)
- vfs_dq_free_inode(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)
@@ -1809,11 +1980,16 @@ bail:
if (xattr_ac)
ocfs2_free_alloc_context(xattr_ac);
if ((status < 0) && inode) {
+ if (dl)
+ ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
+
+ OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
clear_nlink(inode);
iput(inode);
}
- mlog_exit(status);
+ if (status)
+ mlog_errno(status);
return status;
}
@@ -1822,8 +1998,6 @@ static int ocfs2_blkno_stringify(u64 blkno, char *name)
{
int status, namelen;
- mlog_entry_void();
-
namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
(long long)blkno);
if (namelen <= 0) {
@@ -1840,76 +2014,133 @@ static int ocfs2_blkno_stringify(u64 blkno, char *name)
goto bail;
}
- mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name,
- namelen);
+ trace_ocfs2_blkno_stringify(blkno, name, namelen);
status = 0;
bail:
- mlog_exit(status);
+ if (status < 0)
+ mlog_errno(status);
return status;
}
-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_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 status = 0;
-
- status = ocfs2_blkno_stringify(blkno, name);
- if (status < 0) {
- mlog_errno(status);
- return status;
- }
+ int ret = 0;
orphan_dir_inode = ocfs2_get_system_file_inode(osb,
ORPHAN_DIR_SYSTEM_INODE,
osb->slot_num);
if (!orphan_dir_inode) {
- status = -ENOENT;
- mlog_errno(status);
- return status;
+ ret = -ENOENT;
+ mlog_errno(ret);
+ return ret;
}
mutex_lock(&orphan_dir_inode->i_mutex);
- status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
+ 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;
}
- status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
- orphan_dir_bh, name,
- OCFS2_ORPHAN_NAMELEN, lookup);
- if (status < 0) {
- ocfs2_inode_unlock(orphan_dir_inode, 1);
+ *ret_orphan_dir = orphan_dir_inode;
+ *ret_orphan_dir_bh = orphan_dir_bh;
- mlog_errno(status);
- goto leave;
+ 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;
-leave:
- if (status) {
+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);
}
- brelse(orphan_dir_bh);
-
- mlog_exit(status);
- return status;
+ if (ret)
+ mlog_errno(ret);
+ return ret;
}
static int ocfs2_orphan_add(struct ocfs2_super *osb,
handle_t *handle,
struct inode *inode,
- struct ocfs2_dinode *fe,
+ struct buffer_head *fe_bh,
char *name,
struct ocfs2_dir_lookup_result *lookup,
struct inode *orphan_dir_inode)
@@ -1917,8 +2148,10 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
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;
- mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
+ 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) {
@@ -1935,18 +2168,28 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
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;
+ }
+
/* 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);
- orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
-
- status = ocfs2_journal_dirty(handle, orphan_dir_bh);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
+ 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,
@@ -1954,23 +2197,32 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
orphan_dir_bh, lookup);
if (status < 0) {
mlog_errno(status);
- goto leave;
+ goto rollback;
}
- le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL);
+ fe->i_flags |= cpu_to_le32(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);
- mlog(0, "Inode %llu orphaned in slot %d\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno, 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);
+
+rollback:
+ if (status < 0) {
+ if (S_ISDIR(inode->i_mode))
+ ocfs2_add_links_count(orphan_fe, -1);
+ set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
+ }
leave:
brelse(orphan_dir_bh);
- mlog_exit(status);
return status;
}
@@ -1986,17 +2238,15 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
int status = 0;
struct ocfs2_dir_lookup_result lookup = { NULL, };
- mlog_entry_void();
-
status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
if (status < 0) {
mlog_errno(status);
goto leave;
}
- mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n",
- name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
- OCFS2_ORPHAN_NAMELEN);
+ 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,
@@ -2026,21 +2276,110 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
if (S_ISDIR(inode->i_mode))
ocfs2_add_links_count(orphan_fe, -1);
- orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
-
- status = ocfs2_journal_dirty(handle, orphan_dir_bh);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
- }
+ 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);
- mlog_exit(status);
+ 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 ret;
+}
+
int ocfs2_create_inode_in_orphan(struct inode *dir,
int mode,
struct inode **new_inode)
@@ -2056,6 +2395,8 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
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) {
@@ -2064,20 +2405,9 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
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);
+ 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);
@@ -2099,33 +2429,32 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
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;
+ status = dquot_alloc_inode(inode);
+ if (status)
goto leave;
- }
did_quota_inode = 1;
- inode->i_nlink = 0;
- /* do the real work now. */
- status = ocfs2_mknod_locked(osb, dir, inode,
- 0, &new_di_bh, parent_di_bh, handle,
- inode_ac);
+ 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;
}
- status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name);
+ 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, di, orphan_name,
+ status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
&orphan_insert, orphan_dir);
if (status < 0) {
mlog_errno(status);
@@ -2140,7 +2469,7 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
insert_inode_hash(inode);
leave:
if (status < 0 && did_quota_inode)
- vfs_dq_free_inode(inode);
+ dquot_free_inode(inode);
if (handle)
ocfs2_commit_trans(osb, handle);
@@ -2151,9 +2480,6 @@ leave:
iput(orphan_dir);
}
- if (status == -ENOSPC)
- mlog(0, "Disk is full\n");
-
if ((status < 0) && inode) {
clear_nlink(inode);
iput(inode);
@@ -2188,8 +2514,10 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
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);
+ 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) {
@@ -2267,10 +2595,11 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
}
di = (struct ocfs2_dinode *)di_bh->b_data;
- le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL);
+ di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL);
di->i_orphaned_slot = 0;
- inode->i_nlink = 1;
+ set_nlink(inode, 1);
ocfs2_set_links_count(di, inode->i_nlink);
+ ocfs2_update_inode_fsync_trans(handle, inode, 1);
ocfs2_journal_dirty(handle, di_bh);
status = ocfs2_add_entry(handle, dentry, inode,
@@ -2288,7 +2617,6 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
goto out_commit;
}
- dentry->d_op = &ocfs2_dentry_ops;
d_instantiate(dentry, inode);
status = 0;
out_commit:
@@ -2307,7 +2635,8 @@ leave:
ocfs2_free_dir_lookup_result(&lookup);
- mlog_exit(status);
+ if (status)
+ mlog_errno(status);
return status;
}
@@ -2330,4 +2659,6 @@ const struct inode_operations ocfs2_dir_iops = {
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
.fiemap = ocfs2_fiemap,
+ .get_acl = ocfs2_iop_get_acl,
+ .set_acl = ocfs2_iop_set_acl,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-12 15:54:22 +0000