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authorSteve Whitehouse <swhiteho@redhat.com>2018-10-08 14:32:35 -0500
committerBob Peterson <rpeterso@redhat.com>2018-10-09 07:06:16 -0500
commit6ddc5c3ddf256a7a0906732681a337f0452ac67a (patch)
treefa04a9ec5230111ffc2b2b848c8020ab086f6677 /fs/gfs2
parent1eb8d7387908022951792a46fa040ad3942b3b08 (diff)
downloadlinux-6ddc5c3ddf256a7a0906732681a337f0452ac67a.tar.bz2
gfs2: getlabel support
Add support for the GETFSLABEL ioctl in gfs2. I tested this patch and it works as expected. Signed-off-by: Steve Whitehouse <swhiteho@redhat.com> Tested-by: Abhi Das <adas@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/file.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 08369c6cd127..6510f4e07d0e 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -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;
}