Merge pull request #3213 from blenk92/fix-mount-parsing

src/lxc/conf.c

@@ -1853,11 +1853,15 @@ static void parse_mntopt(char *opt, unsigned long *flags, char **data, size_t si
 {
 	struct mount_opt *mo;
 
+	/* If '=' is contained in opt, the option must go into data. */
+	if (!strchr(opt, '=')) {
+
 		/* If opt is found in mount_opt, set or clear flags.
 		 * Otherwise append it to data. */
-
+		size_t opt_len = strlen(opt);
 		for (mo = &mount_opt[0]; mo->name != NULL; mo++) {
-		if (strncmp(opt, mo->name, strlen(mo->name)) == 0) {
+			size_t mo_name_len = strlen(mo->name);
+			if (opt_len == mo_name_len && strncmp(opt, mo->name, mo_name_len) == 0) {
 				if (mo->clear)
 					*flags &= ~mo->flag;
 				else
@@ -1865,6 +1869,7 @@ static void parse_mntopt(char *opt, unsigned long *flags, char **data, size_t si
 				return;
 			}
 		}
+	}
 
 	if (strlen(*data))
 		(void)strlcat(*data, ",", size);