tmpfs mounts: also clear MS_REMOUNT flag (#4387)

netblue30 · Jul 13, 2021 · ba5f5c8 · ba5f5c8
1 parent 110a74f
commit ba5f5c8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/firejail/fs.c b/src/firejail/fs.c
@@ -489,7 +489,7 @@ void fs_tmpfs(const char *dir, unsigned check_owner) {
 	struct statvfs buf;
 	if (fstatvfs(fd, &buf) == -1)
 		errExit("fstatvfs");
-	unsigned long flags = buf.f_flag & ~(MS_RDONLY|MS_BIND);
+	unsigned long flags = buf.f_flag & ~(MS_RDONLY|MS_BIND|MS_REMOUNT);
 	// mount via the symbolic link in /proc/self/fd
 	EUID_ROOT();
 	char *proc;