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-rw-r--r--fs/ext3/ioctl.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
index aaf1da17b6d4..8c22aa9a7fbb 100644
--- a/fs/ext3/ioctl.c
+++ b/fs/ext3/ioctl.c
@@ -48,6 +48,7 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
if (!S_ISDIR(inode->i_mode))
flags &= ~EXT3_DIRSYNC_FL;
+ mutex_lock(&inode->i_mutex);
oldflags = ei->i_flags;
/* The JOURNAL_DATA flag is modifiable only by root */
@@ -60,8 +61,10 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
* This test looks nicer. Thanks to Pauline Middelink
*/
if ((flags ^ oldflags) & (EXT3_APPEND_FL | EXT3_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE))
+ if (!capable(CAP_LINUX_IMMUTABLE)) {
+ mutex_unlock(&inode->i_mutex);
return -EPERM;
+ }
}
/*
@@ -69,14 +72,18 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
* the relevant capability.
*/
if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL)) {
- if (!capable(CAP_SYS_RESOURCE))
+ if (!capable(CAP_SYS_RESOURCE)) {
+ mutex_unlock(&inode->i_mutex);
return -EPERM;
+ }
}
handle = ext3_journal_start(inode, 1);
- if (IS_ERR(handle))
+ if (IS_ERR(handle)) {
+ mutex_unlock(&inode->i_mutex);
return PTR_ERR(handle);
+ }
if (IS_SYNC(inode))
handle->h_sync = 1;
err = ext3_reserve_inode_write(handle, inode, &iloc);
@@ -93,11 +100,14 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
err = ext3_mark_iloc_dirty(handle, inode, &iloc);
flags_err:
ext3_journal_stop(handle);
- if (err)
+ if (err) {
+ mutex_unlock(&inode->i_mutex);
return err;
+ }
if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL))
err = ext3_change_inode_journal_flag(inode, jflag);
+ mutex_unlock(&inode->i_mutex);
return err;
}
case EXT3_IOC_GETVERSION: