Remove valid_bytes from stat _more ioctls

The idea here was that we'd expand the size of the struct and
valid_bytes would tell the kernel which fields were present in
userspace's struct.  That doesn't combine well with the ioctl convention
of having the size of the type baked into the ioctl number.   We'll
remove this to make the world less surprising.  If we expand the
interface we'd add additional ioctls and types.

Signed-off-by: Zach Brown <zab@versity.com>

utils/src/df.c

@@ -48,7 +48,6 @@ static int do_df(struct df_args *args)
 	if (fd < 0)
 		return fd;
 
-	sfm.valid_bytes = sizeof(struct scoutfs_ioctl_statfs_more);
 	ret = ioctl(fd, SCOUTFS_IOC_STATFS_MORE, &sfm);
 	if (ret < 0) {
 		fprintf(stderr, "statfs_more returned %d: error %s (%d)\n",

utils/src/stat.c

@@ -131,12 +131,10 @@ static int do_stat(struct stat_args *args)
 	if (args->is_inode) {
 		cmd = SCOUTFS_IOC_STAT_MORE;
 		fields = inode_fields;
-		st.stm.valid_bytes = sizeof(struct scoutfs_ioctl_stat_more);
 		pr = print_inode_field;
 	} else {
 		cmd = SCOUTFS_IOC_STATFS_MORE;
 		fields = fs_fields;
-		st.sfm.valid_bytes = sizeof(struct scoutfs_ioctl_statfs_more);
 		pr = print_fs_field;
 	}