fix mount option parsing

Do not append the propgation options to the mount data. Filesystems fail to mount if the mount data contains propagation options. See also lxc/lxcri#30 Signed-off-by: Ruben Jenster <[email protected]>
drachenfels-de · Jun 23, 2021 · c46c970 · c46c970
1 parent a1040f8
commit c46c970
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/lxc/conf.c b/src/lxc/conf.c
@@ -1994,6 +1994,12 @@ static int parse_mntopt(char *opt, unsigned long *flags, char **data, size_t siz
 {
 	ssize_t ret;
 
+	/* Propagation opts are parsed separately and must not go into data. */
+	for (struct mount_opt *mo = &propagation_opt[0]; mo->name != NULL; mo++) {
+		if (strnequal(opt, mo->name, strlen(mo->name)))
+			return 0;
+	}
+
 	/* If '=' is contained in opt, the option must go into data. */
 	if (!strchr(opt, '=')) {
 		/*