diff options
Diffstat (limited to 'fs/ntfs3/file.c')
| -rw-r--r-- | fs/ntfs3/file.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index c1ece707b195..4c90ec2fa2ea 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -49,6 +49,30 @@ static int ntfs_ioctl_fitrim(struct ntfs_sb_info *sbi, unsigned long arg) return 0; } +static int ntfs_ioctl_get_volume_label(struct ntfs_sb_info *sbi, u8 __user *buf) +{ + if (copy_to_user(buf, sbi->volume.label, FSLABEL_MAX)) + return -EFAULT; + + return 0; +} + +static int ntfs_ioctl_set_volume_label(struct ntfs_sb_info *sbi, u8 __user *buf) +{ + u8 user[FSLABEL_MAX] = {0}; + int len; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (copy_from_user(user, buf, FSLABEL_MAX)) + return -EFAULT; + + len = strnlen(user, FSLABEL_MAX); + + return ntfs_set_label(sbi, user, len); +} + /* * ntfs_ioctl - file_operations::unlocked_ioctl */ @@ -64,6 +88,10 @@ long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg) switch (cmd) { case FITRIM: return ntfs_ioctl_fitrim(sbi, arg); + case FS_IOC_GETFSLABEL: + return ntfs_ioctl_get_volume_label(sbi, (u8 __user *)arg); + case FS_IOC_SETFSLABEL: + return ntfs_ioctl_set_volume_label(sbi, (u8 __user *)arg); } return -ENOTTY; /* Inappropriate ioctl for device. */ } |