jailtest -> jailcheck (#4268)

1 files changed, 47 insertions, 0 deletions

diff --git a/src/jailcheck/seccomp.c b/src/jailcheck/seccomp.c
new file mode 100644
index 000000000..9345eb970
--- /dev/null
+++ b/src/jailcheck/seccomp.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2014-2021 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 "jailcheck.h"
+#define MAXBUF 4096
+
+void seccomp_test(pid_t pid) {
+        char *file;
+        if (asprintf(&file, "/proc/%d/status", pid) == -1)
+                errExit("asprintf");
+
+        FILE *fp = fopen(file, "r");
+        if (!fp) {
+                printf("  Error: cannot open %s\n", file);
+                free(file);
+                return;
+        }
+
+        char buf[MAXBUF];
+        while (fgets(buf, MAXBUF, fp)) {
+                if (strncmp(buf, "Seccomp:", 8) == 0) {
+                        int val = -1;
+                        int rv = sscanf(buf + 8, "\t%d", &val);
+                        if (rv != 1 || val == 0)
+                                printf("   Warning: seccomp not enabled\n");
+                        break;
+                }
+        }
+        fclose(fp);
+        free(file);
+}