Commit ff89be87 authored by J. Bruce Fields's avatar J. Bruce Fields
Browse files

nfsd4: require version 4 when enabling or disabling minorversion 



The current code will allow silly things like:

	echo "+2 +3 +4 +7.1">/proc/fs/nfsd/versions

Reported-by: default avatarFan Chaoting <fanchaoting@cn.fujitsu.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent bca0ec65

fs/nfsd/nfsctl.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -534,7 +534,7 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size) 
			else

			else

				num = simple_strtol(vers, &minorp, 0);

				num = simple_strtol(vers, &minorp, 0);

			if (*minorp == '.') {

			if (*minorp == '.') {

				if (num < 4)

				if (num != 4)

					return -EINVAL;

					return -EINVAL;

				minor = simple_strtoul(minorp+1, NULL, 0);

				minor = simple_strtoul(minorp+1, NULL, 0);

				if (minor == 0)

				if (minor == 0)