Unverified Commit 21dc07ac authored by Ethan Ferguson's avatar Ethan Ferguson Committed by Konstantin Komarov
Browse files

ntfs3: add FS_IOC_SETFSLABEL ioctl 



Add support for the FS_IOC_SETFSLABEL ioctl.

Signed-off-by: default avatarEthan Ferguson <ethan.ferguson@zetier.com>
Signed-off-by: default avatarKonstantin Komarov <almaz.alexandrovich@paragon-software.com>
parent e4dff970

fs/ntfs3/file.c

+18 −0
Original line number Diff line number Diff line
@@ -57,6 +57,22 @@ static int ntfs_ioctl_get_volume_label(struct ntfs_sb_info *sbi, u8 __user *buf) 
	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

 */
@@ -74,6 +90,8 @@ long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg) 
		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. */

}