1 files changed, 64 insertions, 0 deletions

diff --git a/src/faudit/seccomp.c b/src/faudit/seccomp.c
new file mode 100644
index 000000000..a50ec1e0c
--- /dev/null
+++ b/src/faudit/seccomp.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2014-2016 Firejail Authors
+ *
+ * This file is part of firejail project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "faudit.h"
+#include <linux/capability.h>
+
+#define MAXBUF 4098
+static int extract_seccomp(int *val) {
+        FILE *fp = fopen("/proc/self/status", "r");
+        if (!fp)
+                return 1;
+        
+        char buf[MAXBUF];
+        while (fgets(buf, MAXBUF, fp)) {
+                if (strncmp(buf, "Seccomp:\t", 8) == 0) {
+                        char *ptr = buf + 8;
+                        int tmp;
+                        sscanf(ptr, "%d", &tmp);
+                        *val = tmp;
+                        fclose(fp);
+                        return 0;
+                }
+        }
+
+        fclose(fp);
+        return 1;
+}
+
+void seccomp_test(void) {
+        int seccomp_status;
+        int rv = extract_seccomp(&seccomp_status);
+        
+        if (rv) {
+                printf("SKIP: cannot extract seccomp configuration on this platform\n");
+                return;
+        }
+        
+        if (seccomp_status == 0)
+                printf("BAD: seccomp disabled\n");
+        else if (seccomp_status == 1)
+                printf("GOOD: seccomp strict mode - only  read, write, _exit, and sigreturn are allowd\n");
+        else if (seccomp_status == 2) {
+                printf("GOOD: seccomp BPF enababled\n");
+        }
+        else
+                fprintf(stderr, "Error: unrecognized seccomp mode\n");
+
+}
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