gfs2: getlabel support (6ddc5c3d) · Commits · 戴 / test

Add support for the GETFSLABEL ioctl in gfs2. I tested this patch and it works as expected. Signed-off-by:

fs/gfs2/file.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -314,6 +314,17 @@ static int gfs2_set_flags(struct file filp, u32 __user ptr)
		return do_gfs2_set_flags(filp, gfsflags, mask);
		}

		static int gfs2_getlabel(struct file filp, char __user label)
		{
		struct inode *inode = file_inode(filp);
		struct gfs2_sbd *sdp = GFS2_SB(inode);

		if (copy_to_user(label, sdp->sd_sb.sb_locktable, GFS2_LOCKNAME_LEN))
		return -EFAULT;

		return 0;
		}

		static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
		{
		switch(cmd) {
		@@ -323,7 +334,10 @@ static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
		return gfs2_set_flags(filp, (u32 __user *)arg);
		case FITRIM:
		return gfs2_fitrim(filp, (void __user *)arg);
		case FS_IOC_GETFSLABEL:
		return gfs2_getlabel(filp, (char __user *)arg);
		}

		return -ENOTTY;
		}