Bundle libseccomp 2.3.1

[linux-seccomp.git] / libseccomp / tests / 07-sim-db_bug_looping.c

diff --git a/libseccomp/tests/07-sim-db_bug_looping.c b/libseccomp/tests/07-sim-db_bug_looping.c
new file mode 100644 (file)
index 0000000..e3fec81
--- /dev/null
+++ b/libseccomp/tests/07-sim-db_bug_looping.c
@@ -0,0 +1,68 @@
+/**
+ * Seccomp Library test program
+ *
+ * Copyright IBM Corp. 2012
+ * Author: Ashley Lai <adlai@us.ibm.com>
+ */
+
+/*
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of version 2.1 of the GNU Lesser General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This library 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, see <http://www.gnu.org/licenses>.
+ */
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <seccomp.h>
+
+#include "util.h"
+
+int main(int argc, char *argv[])
+{
+       int rc;
+       struct util_options opts;
+       scmp_filter_ctx ctx = NULL;
+
+       rc = util_getopt(argc, argv, &opts);
+       if (rc < 0)
+               goto out;
+
+       ctx = seccomp_init(SCMP_ACT_KILL);
+       if (ctx == NULL)
+               return ENOMEM;
+
+       /* The next three seccomp_rule_add_exact() calls for read must
+        * go together in this order to catch an infinite loop. */
+
+       rc = seccomp_rule_add_exact(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 1,
+                                   SCMP_A0(SCMP_CMP_EQ, STDOUT_FILENO));
+       if (rc != 0)
+               goto out;
+
+       rc = seccomp_rule_add_exact(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 1,
+                                   SCMP_A1(SCMP_CMP_EQ, 0x0));
+       if (rc != 0)
+               goto out;
+
+       rc = seccomp_rule_add_exact(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 1,
+                                   SCMP_A0(SCMP_CMP_EQ, STDIN_FILENO));
+       if (rc != 0)
+               goto out;
+
+       rc = util_filter_output(&opts, ctx);
+       if (rc)
+               goto out;
+
+out:
+       seccomp_release(ctx);
+       return (rc < 0 ? -rc : rc);
+}