diff options
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index c04c7ccba9e..2ed7c37f897 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -51,6 +51,11 @@ int ext4_ioctl (struct inode * inode, struct file * filp, unsigned int cmd, flags &= ~EXT4_DIRSYNC_FL; mutex_lock(&inode->i_mutex); + /* Is it quota file? Do not allow user to mess with it */ + if (IS_NOQUOTA(inode)) { + mutex_unlock(&inode->i_mutex); + return -EPERM; + } oldflags = ei->i_flags; /* The JOURNAL_DATA flag is modifiable only by root */ @@ -194,7 +199,7 @@ flags_err: * need to allocate reservation structure for this inode * before set the window size */ - mutex_lock(&ei->truncate_mutex); + down_write(&ei->i_data_sem); if (!ei->i_block_alloc_info) ext4_init_block_alloc_info(inode); @@ -202,7 +207,7 @@ flags_err: struct ext4_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node; rsv->rsv_goal_size = rsv_window_size; } - mutex_unlock(&ei->truncate_mutex); + up_write(&ei->i_data_sem); return 0; } case EXT4_IOC_GROUP_EXTEND: { @@ -249,6 +254,9 @@ flags_err: return err; } + case EXT4_IOC_MIGRATE: + return ext4_ext_migrate(inode, filp, cmd, arg); + default: return -ENOTTY; } |