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ocfs2: add ext2 attributes 

Support immutable, and other attributes.

Some renaming and other minor fixes done by myself.

Signed-off-by: Herbert Poetzl <herbert@13thfloor.at>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Herbert Poetzl 2006-07-03 17:27:12 -07:00 committed by Mark Fasheh
parent b4c98f625f
commit ca4d147e62
9 changed files with 217 additions and 6 deletions
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1
fs/ocfs2/Makefile
View File

@ -16,6 +16,7 @@ ocfs2-objs := \
file.o \
heartbeat.o \
inode.o \
ioctl.o \
journal.o \
localalloc.o \
mmap.o \

9
fs/ocfs2/dlmglue.c
View File

@ -1330,6 +1330,7 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
cpu_to_be64(ocfs2_pack_timespec(&inode->i_ctime));
lvb->lvb_imtime_packed =
cpu_to_be64(ocfs2_pack_timespec(&inode->i_mtime));
lvb->lvb_iattr = cpu_to_be32(oi->ip_attr);
mlog_meta_lvb(0, lockres);
@ -1360,6 +1361,9 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
oi->ip_clusters = be32_to_cpu(lvb->lvb_iclusters);
i_size_write(inode, be64_to_cpu(lvb->lvb_isize));
oi->ip_attr = be32_to_cpu(lvb->lvb_iattr);
ocfs2_set_inode_flags(inode);
/* fast-symlinks are a special case */
if (S_ISLNK(inode->i_mode) && !oi->ip_clusters)
inode->i_blocks = 0;
@ -2899,8 +2903,9 @@ void ocfs2_dump_meta_lvb_info(u64 level,
be32_to_cpu(lvb->lvb_iuid), be32_to_cpu(lvb->lvb_igid),
be16_to_cpu(lvb->lvb_imode));
mlog(level, "nlink %u, atime_packed 0x%llx, ctime_packed 0x%llx, "
"mtime_packed 0x%llx\n", be16_to_cpu(lvb->lvb_inlink),
"mtime_packed 0x%llx iattr 0x%x\n", be16_to_cpu(lvb->lvb_inlink),
(long long)be64_to_cpu(lvb->lvb_iatime_packed),
(long long)be64_to_cpu(lvb->lvb_ictime_packed),
(long long)be64_to_cpu(lvb->lvb_imtime_packed));
(long long)be64_to_cpu(lvb->lvb_imtime_packed),
be32_to_cpu(lvb->lvb_iattr));
}

5
fs/ocfs2/dlmglue.h
View File

@ -27,7 +27,7 @@
#ifndef DLMGLUE_H
#define DLMGLUE_H
#define OCFS2_LVB_VERSION 2
#define OCFS2_LVB_VERSION 3
struct ocfs2_meta_lvb {
__be32 lvb_version;
@ -40,7 +40,8 @@ struct ocfs2_meta_lvb {
__be64 lvb_isize;
__be16 lvb_imode;
__be16 lvb_inlink;
__be32 lvb_reserved[3];
__be32 lvb_iattr;
__be32 lvb_reserved[2];
};
/* ocfs2_meta_lock_full() and ocfs2_data_lock_full() 'arg_flags' flags */

3
fs/ocfs2/file.c
View File

@ -44,6 +44,7 @@
#include "file.h"
#include "sysfile.h"
#include "inode.h"
#include "ioctl.h"
#include "journal.h"
#include "mmap.h"
#include "suballoc.h"
@ -1227,10 +1228,12 @@ const struct file_operations ocfs2_fops = {
.open = ocfs2_file_open,
.aio_read = ocfs2_file_aio_read,
.aio_write = ocfs2_file_aio_write,
.ioctl = ocfs2_ioctl,
};
const struct file_operations ocfs2_dops = {
.read = generic_read_dir,
.readdir = ocfs2_readdir,
.fsync = ocfs2_sync_file,
.ioctl = ocfs2_ioctl,
};

28
fs/ocfs2/inode.c
View File

@ -71,6 +71,26 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
struct inode *inode,
struct buffer_head *fe_bh);
void ocfs2_set_inode_flags(struct inode *inode)
{
unsigned int flags = OCFS2_I(inode)->ip_attr;
inode->i_flags &= ~(S_IMMUTABLE |
S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
if (flags & OCFS2_IMMUTABLE_FL)
inode->i_flags |= S_IMMUTABLE;
if (flags & OCFS2_SYNC_FL)
inode->i_flags |= S_SYNC;
if (flags & OCFS2_APPEND_FL)
inode->i_flags |= S_APPEND;
if (flags & OCFS2_NOATIME_FL)
inode->i_flags |= S_NOATIME;
if (flags & OCFS2_DIRSYNC_FL)
inode->i_flags |= S_DIRSYNC;
}
struct inode *ocfs2_ilookup_for_vote(struct ocfs2_super *osb,
u64 blkno,
int delete_vote)
@ -260,7 +280,6 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
inode->i_blocks =
ocfs2_align_bytes_to_sectors(le64_to_cpu(fe->i_size));
inode->i_mapping->a_ops = &ocfs2_aops;
inode->i_flags |= S_NOATIME;
inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
@ -276,6 +295,7 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
OCFS2_I(inode)->ip_orphaned_slot = OCFS2_INVALID_SLOT;
OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
if (create_ino)
inode->i_ino = ino_from_blkno(inode->i_sb,
@ -330,6 +350,9 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_data_lockres,
OCFS2_LOCK_TYPE_DATA, inode);
ocfs2_set_inode_flags(inode);
inode->i_flags |= S_NOATIME;
status = 0;
bail:
mlog_exit(status);
@ -1131,6 +1154,7 @@ int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle,
spin_lock(&OCFS2_I(inode)->ip_lock);
fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
spin_unlock(&OCFS2_I(inode)->ip_lock);
fe->i_size = cpu_to_le64(i_size_read(inode));
@ -1169,6 +1193,8 @@ void ocfs2_refresh_inode(struct inode *inode,
spin_lock(&OCFS2_I(inode)->ip_lock);
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
ocfs2_set_inode_flags(inode);
i_size_write(inode, le64_to_cpu(fe->i_size));
inode->i_nlink = le16_to_cpu(fe->i_links_count);
inode->i_uid = le32_to_cpu(fe->i_uid);

3
fs/ocfs2/inode.h
View File

@ -56,6 +56,7 @@ struct ocfs2_inode_info
struct ocfs2_journal_handle *ip_handle;
u32 ip_flags; /* see below */
u32 ip_attr; /* inode attributes */
/* protected by recovery_lock. */
struct inode *ip_next_orphan;
@ -142,4 +143,6 @@ int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle,
int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb);
int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
void ocfs2_set_inode_flags(struct inode *inode);
#endif /* OCFS2_INODE_H */

134
fs/ocfs2/ioctl.c Normal file
View File

@ -0,0 +1,134 @@
/*
* linux/fs/ocfs2/ioctl.c
*
* Copyright (C) 2006 Herbert Poetzl
* adapted from Remy Card's ext2/ioctl.c
*/
#include <linux/fs.h>
#include <linux/mount.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "alloc.h"
#include "dlmglue.h"
#include "inode.h"
#include "journal.h"
#include "ocfs2_fs.h"
#include <linux/ext2_fs.h>
static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
{
int status;
status = ocfs2_meta_lock(inode, NULL, NULL, 0);
if (status < 0) {
mlog_errno(status);
return status;
}
*flags = OCFS2_I(inode)->ip_attr;
ocfs2_meta_unlock(inode, 0);
mlog_exit(status);
return status;
}
static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
unsigned mask)
{
struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_journal_handle *handle = NULL;
struct buffer_head *bh = NULL;
unsigned oldflags;
int status;
mutex_lock(&inode->i_mutex);
status = ocfs2_meta_lock(inode, NULL, &bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
}
status = -EROFS;
if (IS_RDONLY(inode))
goto bail_unlock;
status = -EACCES;
if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
goto bail_unlock;
if (!S_ISDIR(inode->i_mode))
flags &= ~OCFS2_DIRSYNC_FL;
handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
goto bail_unlock;
}
oldflags = ocfs2_inode->ip_attr;
flags = flags & mask;
flags |= oldflags & ~mask;
/*
* The IMMUTABLE and APPEND_ONLY flags can only be changed by
* the relevant capability.
*/
status = -EPERM;
if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) &
(OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) {
if (!capable(CAP_LINUX_IMMUTABLE))
goto bail_unlock;
}
ocfs2_inode->ip_attr = flags;
ocfs2_set_inode_flags(inode);
status = ocfs2_mark_inode_dirty(handle, inode, bh);
if (status < 0)
mlog_errno(status);
ocfs2_commit_trans(handle);
bail_unlock:
ocfs2_meta_unlock(inode, 1);
bail:
mutex_unlock(&inode->i_mutex);
if (bh)
brelse(bh);
mlog_exit(status);
return status;
}
int ocfs2_ioctl(struct inode * inode, struct file * filp,
unsigned int cmd, unsigned long arg)
{
unsigned int flags;
int status;
switch (cmd) {
case OCFS2_IOC_GETFLAGS:
status = ocfs2_get_inode_attr(inode, &flags);
if (status < 0)
return status;
flags &= OCFS2_FL_VISIBLE;
return put_user(flags, (int __user *) arg);
case OCFS2_IOC_SETFLAGS:
if (get_user(flags, (int __user *) arg))
return -EFAULT;
return ocfs2_set_inode_attr(inode, flags,
OCFS2_FL_MODIFIABLE);
default:
return -ENOTTY;
}
}

16
fs/ocfs2/ioctl.h Normal file
View File

@ -0,0 +1,16 @@
/*
* ioctl.h
*
* Function prototypes
*
* Copyright (C) 2006 Herbert Poetzl
*
*/
#ifndef OCFS2_IOCTL_H
#define OCFS2_IOCTL_H
int ocfs2_ioctl(struct inode * inode, struct file * filp,
unsigned int cmd, unsigned long arg);
#endif /* OCFS2_IOCTL_H */

24
fs/ocfs2/ocfs2_fs.h
View File

@ -114,6 +114,26 @@
#define OCFS2_CHAIN_FL (0x00000400) /* Chain allocator */
#define OCFS2_DEALLOC_FL (0x00000800) /* Truncate log */
/* Inode attributes, keep in sync with EXT2 */
#define OCFS2_SECRM_FL (0x00000001) /* Secure deletion */
#define OCFS2_UNRM_FL (0x00000002) /* Undelete */
#define OCFS2_COMPR_FL (0x00000004) /* Compress file */
#define OCFS2_SYNC_FL (0x00000008) /* Synchronous updates */
#define OCFS2_IMMUTABLE_FL (0x00000010) /* Immutable file */
#define OCFS2_APPEND_FL (0x00000020) /* writes to file may only append */
#define OCFS2_NODUMP_FL (0x00000040) /* do not dump file */
#define OCFS2_NOATIME_FL (0x00000080) /* do not update atime */
#define OCFS2_DIRSYNC_FL (0x00010000) /* dirsync behaviour (directories only) */
#define OCFS2_FL_VISIBLE (0x000100FF) /* User visible flags */
#define OCFS2_FL_MODIFIABLE (0x000100FF) /* User modifiable flags */
/*
* ioctl commands
*/
#define OCFS2_IOC_GETFLAGS _IOR('f', 1, long)
#define OCFS2_IOC_SETFLAGS _IOW('f', 2, long)
/*
* Journal Flags (ocfs2_dinode.id1.journal1.i_flags)
*/
@ -399,7 +419,9 @@ struct ocfs2_dinode {
__le32 i_atime_nsec;
__le32 i_ctime_nsec;
__le32 i_mtime_nsec;
/*70*/ __le64 i_reserved1[9];
__le32 i_attr;
__le32 i_reserved1;
/*70*/ __le64 i_reserved2[8];
/*B8*/ union {
__le64 i_pad1; /* Generic way to refer to this
64bit union */