1fabe1481f
This is mostly a search and replace as ocfs2_journal_handle is now no more than a container for a handle_t pointer. ocfs2_commit_trans() becomes very straight forward, and we remove some out of date comments / code. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
136 lines
2.7 KiB
C
136 lines
2.7 KiB
C
/*
|
|
* 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 "ioctl.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, 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);
|
|
handle_t *handle = NULL;
|
|
struct buffer_head *bh = NULL;
|
|
unsigned oldflags;
|
|
int status;
|
|
|
|
mutex_lock(&inode->i_mutex);
|
|
|
|
status = ocfs2_meta_lock(inode, &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, 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(osb, 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;
|
|
}
|
|
}
|
|
|