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ocfs2: Add extended attribute support 

This patch implements storing extended attributes both in inode or a single
external block. We only store EA's in-inode when blocksize > 512 or that
inode block has free space for it. When an EA's value is larger than 80
bytes, we will store the value via b-tree outside inode or block.

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Tiger Yang 2008-08-18 17:11:00 +08:00 committed by Mark Fasheh
parent fdd77704a8
commit cf1d6c763f
16 changed files with 1927 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/ocfs2/Makefile
View File

@ -36,6 +36,8 @@ ocfs2-objs := \
uptodate.o \
ver.o \
xattr.o \
xattr_user.o \
xattr_trusted.o
ocfs2_stackglue-objs := stackglue.o
ocfs2_stack_o2cb-objs := stack_o2cb.o

5
fs/ocfs2/file.c
View File

@ -55,6 +55,7 @@
#include "mmap.h"
#include "suballoc.h"
#include "super.h"
#include "xattr.h"
#include "buffer_head_io.h"
@ -2070,6 +2071,10 @@ const struct inode_operations ocfs2_file_iops = {
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
.fallocate = ocfs2_fallocate,
.fiemap = ocfs2_fiemap,
};

8
fs/ocfs2/inode.c
View File

@ -49,6 +49,7 @@
#include "symlink.h"
#include "sysfile.h"
#include "uptodate.h"
#include "xattr.h"
#include "buffer_head_io.h"
@ -741,6 +742,13 @@ static int ocfs2_wipe_inode(struct inode *inode,
goto bail_unlock_dir;
}
/*Free extended attribute resources associated with this inode.*/
status = ocfs2_xattr_remove(inode, di_bh);
if (status < 0) {
mlog_errno(status);
goto bail_unlock_dir;
}
status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
orphan_dir_bh);
if (status < 0)

3
fs/ocfs2/inode.h
View File

@ -40,6 +40,9 @@ struct ocfs2_inode_info
/* protects allocation changes on this inode. */
struct rw_semaphore ip_alloc_sem;
/* protects extended attribute changes on this inode */
struct rw_semaphore ip_xattr_sem;
/* These fields are protected by ip_lock */
spinlock_t ip_lock;
u32 ip_open_count;

10
fs/ocfs2/journal.h
View File

@ -283,6 +283,9 @@ int ocfs2_journal_dirty_data(handle_t *handle,
/* simple file updates like chmod, etc. */
#define OCFS2_INODE_UPDATE_CREDITS 1
/* extended attribute block update */
#define OCFS2_XATTR_BLOCK_UPDATE_CREDITS 1
/* group extend. inode update and last group update. */
#define OCFS2_GROUP_EXTEND_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1)
@ -340,6 +343,13 @@ int ocfs2_journal_dirty_data(handle_t *handle,
#define OCFS2_RENAME_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 3 \
+ OCFS2_UNLINK_CREDITS)
/* global bitmap dinode, group desc., relinked group,
* suballocator dinode, group desc., relinked group,
* dinode, xattr block */
#define OCFS2_XATTR_BLOCK_CREATE_CREDITS (OCFS2_SUBALLOC_ALLOC * 2 + \
+ OCFS2_INODE_UPDATE_CREDITS \
+ OCFS2_XATTR_BLOCK_UPDATE_CREDITS)
/*
* Please note that the caller must make sure that root_el is the root
* of extent tree. So for an inode, it should be &fe->id2.i_list. Otherwise

5
fs/ocfs2/namei.c
View File

@ -60,6 +60,7 @@
#include "symlink.h"
#include "sysfile.h"
#include "uptodate.h"
#include "xattr.h"
#include "buffer_head_io.h"
@ -1918,4 +1919,8 @@ const struct inode_operations ocfs2_dir_iops = {
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
};

2
fs/ocfs2/ocfs2.h
View File

@ -188,6 +188,7 @@ enum ocfs2_mount_options
OCFS2_MOUNT_ERRORS_PANIC = 1 << 3, /* Panic on errors */
OCFS2_MOUNT_DATA_WRITEBACK = 1 << 4, /* No data ordering */
OCFS2_MOUNT_LOCALFLOCKS = 1 << 5, /* No cluster aware user file locks */
OCFS2_MOUNT_NOUSERXATTR = 1 << 6, /* No user xattr */
};
#define OCFS2_OSB_SOFT_RO 0x0001
@ -218,6 +219,7 @@ struct ocfs2_super
u32 bitmap_cpg;
u8 *uuid;
char *uuid_str;
u32 uuid_hash;
u8 *vol_label;
u64 first_cluster_group_blkno;
u32 fs_generation;

8
fs/ocfs2/ocfs2_fs.h
View File

@ -570,7 +570,7 @@ struct ocfs2_super_block {
/*40*/ __le16 s_max_slots; /* Max number of simultaneous mounts
before tunefs required */
__le16 s_tunefs_flag;
__le32 s_reserved1;
__le32 s_uuid_hash; /* hash value of uuid */
__le64 s_first_cluster_group; /* Block offset of 1st cluster
* group header */
/*50*/ __u8 s_label[OCFS2_MAX_VOL_LABEL_LEN]; /* Label for mounting, etc. */
@ -787,7 +787,11 @@ struct ocfs2_xattr_tree_root {
/*10*/ struct ocfs2_extent_list xt_list; /* Extent record list */
};
#define OCFS2_XATTR_INDEXED 0x1
#define OCFS2_XATTR_INDEXED 0x1
#define OCFS2_HASH_SHIFT 5
#define OCFS2_XATTR_ROUND 3
#define OCFS2_XATTR_SIZE(size) (((size) + OCFS2_XATTR_ROUND) & \
~(OCFS2_XATTR_ROUND))
/*
* On disk structure for xattr block.

17
fs/ocfs2/suballoc.c
View File

@ -493,9 +493,9 @@ bail:
return status;
}
int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
struct ocfs2_extent_list *root_el,
struct ocfs2_alloc_context **ac)
int ocfs2_reserve_new_metadata_blocks(struct ocfs2_super *osb,
int blocks,
struct ocfs2_alloc_context **ac)
{
int status;
u32 slot;
@ -507,7 +507,7 @@ int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
goto bail;
}
(*ac)->ac_bits_wanted = ocfs2_extend_meta_needed(root_el);
(*ac)->ac_bits_wanted = blocks;
(*ac)->ac_which = OCFS2_AC_USE_META;
slot = osb->slot_num;
(*ac)->ac_group_search = ocfs2_block_group_search;
@ -532,6 +532,15 @@ bail:
return status;
}
int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
struct ocfs2_extent_list *root_el,
struct ocfs2_alloc_context **ac)
{
return ocfs2_reserve_new_metadata_blocks(osb,
ocfs2_extend_meta_needed(root_el),
ac);
}
static int ocfs2_steal_inode_from_other_nodes(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac)
{

3
fs/ocfs2/suballoc.h
View File

@ -67,6 +67,9 @@ static inline int ocfs2_alloc_context_bits_left(struct ocfs2_alloc_context *ac)
int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
struct ocfs2_extent_list *root_el,
struct ocfs2_alloc_context **ac);
int ocfs2_reserve_new_metadata_blocks(struct ocfs2_super *osb,
int blocks,
struct ocfs2_alloc_context **ac);
int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
struct ocfs2_alloc_context **ac);
int ocfs2_reserve_clusters(struct ocfs2_super *osb,

14
fs/ocfs2/super.c
View File

@ -64,6 +64,7 @@
#include "sysfile.h"
#include "uptodate.h"
#include "ver.h"
#include "xattr.h"
#include "buffer_head_io.h"
@ -154,6 +155,8 @@ enum {
Opt_localalloc,
Opt_localflocks,
Opt_stack,
Opt_user_xattr,
Opt_nouser_xattr,
Opt_err,
};
@ -173,6 +176,8 @@ static const match_table_t tokens = {
{Opt_localalloc, "localalloc=%d"},
{Opt_localflocks, "localflocks"},
{Opt_stack, "cluster_stack=%s"},
{Opt_user_xattr, "user_xattr"},
{Opt_nouser_xattr, "nouser_xattr"},
{Opt_err, NULL}
};
@ -848,6 +853,12 @@ static int ocfs2_parse_options(struct super_block *sb,
case Opt_data_writeback:
mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
break;
case Opt_user_xattr:
mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
break;
case Opt_nouser_xattr:
mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
break;
case Opt_atime_quantum:
if (match_int(&args[0], &option)) {
status = 0;
@ -1135,6 +1146,7 @@ static void ocfs2_inode_init_once(void *data)
oi->ip_dir_start_lookup = 0;
init_rwsem(&oi->ip_alloc_sem);
init_rwsem(&oi->ip_xattr_sem);
mutex_init(&oi->ip_io_mutex);
oi->ip_blkno = 0ULL;
@ -1378,6 +1390,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
sb->s_fs_info = osb;
sb->s_op = &ocfs2_sops;
sb->s_export_op = &ocfs2_export_ops;
sb->s_xattr = ocfs2_xattr_handlers;
sb->s_time_gran = 1;
sb->s_flags |= MS_NOATIME;
/* this is needed to support O_LARGEFILE */
@ -1574,6 +1587,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
osb->first_cluster_group_blkno =
le64_to_cpu(di->id2.i_super.s_first_cluster_group);
osb->fs_generation = le32_to_cpu(di->i_fs_generation);
osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
mlog(0, "vol_label: %s\n", osb->vol_label);
mlog(0, "uuid: %s\n", osb->uuid_str);
mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n",

9
fs/ocfs2/symlink.c
View File

@ -50,6 +50,7 @@
#include "inode.h"
#include "journal.h"
#include "symlink.h"
#include "xattr.h"
#include "buffer_head_io.h"
@ -168,10 +169,18 @@ const struct inode_operations ocfs2_symlink_inode_operations = {
.follow_link = ocfs2_follow_link,
.getattr = ocfs2_getattr,
.setattr = ocfs2_setattr,
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
};
const struct inode_operations ocfs2_fast_symlink_inode_operations = {
.readlink = ocfs2_readlink,
.follow_link = ocfs2_follow_link,
.getattr = ocfs2_getattr,
.setattr = ocfs2_setattr,
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
};

1620
fs/ocfs2/xattr.c
View File

File diff suppressed because it is too large Load Diff

51
fs/ocfs2/xattr.h Normal file
View File

@ -0,0 +1,51 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* xattr.h
*
* Function prototypes
*
* Copyright (C) 2008 Oracle. All rights reserved.
*
* 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.
*/
#ifndef OCFS2_XATTR_H
#define OCFS2_XATTR_H
#include <linux/init.h>
#include <linux/xattr.h>
enum ocfs2_xattr_type {
OCFS2_XATTR_INDEX_USER = 1,
OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
OCFS2_XATTR_INDEX_TRUSTED,
OCFS2_XATTR_INDEX_SECURITY,
OCFS2_XATTR_MAX
};
extern struct xattr_handler ocfs2_xattr_user_handler;
extern struct xattr_handler ocfs2_xattr_trusted_handler;
extern ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
extern int ocfs2_xattr_get(struct inode *, int, const char *, void *, size_t);
extern int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
size_t, int);
extern int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh);
extern struct xattr_handler *ocfs2_xattr_handlers[];
#endif /* OCFS2_XATTR_H */

82
fs/ocfs2/xattr_trusted.c Normal file
View File

@ -0,0 +1,82 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* xattr_trusted.c
*
* Copyright (C) 2008 Oracle. All rights reserved.
*
* CREDITS:
* Lots of code in this file is taken from ext3.
*
* 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/init.h>
#include <linux/module.h>
#include <linux/string.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "alloc.h"
#include "dlmglue.h"
#include "file.h"
#include "ocfs2_fs.h"
#include "xattr.h"
#define XATTR_TRUSTED_PREFIX "trusted."
static size_t ocfs2_xattr_trusted_list(struct inode *inode, char *list,
size_t list_size, const char *name,
size_t name_len)
{
const size_t prefix_len = sizeof(XATTR_TRUSTED_PREFIX) - 1;
const size_t total_len = prefix_len + name_len + 1;
if (list && total_len <= list_size) {
memcpy(list, XATTR_TRUSTED_PREFIX, prefix_len);
memcpy(list + prefix_len, name, name_len);
list[prefix_len + name_len] = '\0';
}
return total_len;
}
static int ocfs2_xattr_trusted_get(struct inode *inode, const char *name,
void *buffer, size_t size)
{
if (strcmp(name, "") == 0)
return -EINVAL;
return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_TRUSTED, name,
buffer, size);
}
static int ocfs2_xattr_trusted_set(struct inode *inode, const char *name,
const void *value, size_t size, int flags)
{
if (strcmp(name, "") == 0)
return -EINVAL;
return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_TRUSTED, name, value,
size, flags);
}
struct xattr_handler ocfs2_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.list = ocfs2_xattr_trusted_list,
.get = ocfs2_xattr_trusted_get,
.set = ocfs2_xattr_trusted_set,
};

94
fs/ocfs2/xattr_user.c Normal file
View File

@ -0,0 +1,94 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* xattr_user.c
*
* Copyright (C) 2008 Oracle. All rights reserved.
*
* CREDITS:
* Lots of code in this file is taken from ext3.
*
* 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/init.h>
#include <linux/module.h>
#include <linux/string.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "alloc.h"
#include "dlmglue.h"
#include "file.h"
#include "ocfs2_fs.h"
#include "xattr.h"
#define XATTR_USER_PREFIX "user."
static size_t ocfs2_xattr_user_list(struct inode *inode, char *list,
size_t list_size, const char *name,
size_t name_len)
{
const size_t prefix_len = sizeof(XATTR_USER_PREFIX) - 1;
const size_t total_len = prefix_len + name_len + 1;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
return 0;
if (list && total_len <= list_size) {
memcpy(list, XATTR_USER_PREFIX, prefix_len);
memcpy(list + prefix_len, name, name_len);
list[prefix_len + name_len] = '\0';
}
return total_len;
}
static int ocfs2_xattr_user_get(struct inode *inode, const char *name,
void *buffer, size_t size)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
if (strcmp(name, "") == 0)
return -EINVAL;
if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
return -EOPNOTSUPP;
return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_USER, name,
buffer, size);
}
static int ocfs2_xattr_user_set(struct inode *inode, const char *name,
const void *value, size_t size, int flags)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
if (strcmp(name, "") == 0)
return -EINVAL;
if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
return -EOPNOTSUPP;
return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_USER, name, value,
size, flags);
}
struct xattr_handler ocfs2_xattr_user_handler = {
.prefix = XATTR_USER_PREFIX,
.list = ocfs2_xattr_user_list,
.get = ocfs2_xattr_user_get,
.set = ocfs2_xattr_user_set,
};