Adding upstream version 2.5.5.upstream/2.5.5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/tests/05-sim-long_jumps.c b/tests/05-sim-long_jumps.c
new file mode 100644
index 0000000..f8e9634
--- /dev/null
+++ b/tests/05-sim-long_jumps.c
@@ -0,0 +1,89 @@
+/**
+ * Seccomp Library test program
+ *
+ * Copyright (c) 2012 Red Hat <pmoore@redhat.com>
+ * Copyright (c) 2021 Microsoft Corporation <paulmoore@microsoft.com>
+ * Author: Paul Moore <paul@paul-moore.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 <limits.h>
+#include <stdlib.h>
+
+#include <seccomp.h>
+
+#include "util.h"
+
+int main(int argc, char *argv[])
+{
+	int rc;
+	int iter, ctr;
+	char *syscall;
+	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;
+
+	rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(brk), 0);
+	if (rc != 0)
+		goto out;
+
+	/* same syscall, many chains */
+	for (iter = 0; iter < 100; iter++) {
+		rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(chdir), 3,
+				      SCMP_A0(SCMP_CMP_EQ, iter),
+				      SCMP_A1(SCMP_CMP_NE, 0x0),
+				      SCMP_A2(SCMP_CMP_LT, SSIZE_MAX));
+		if (rc != 0)
+			goto out;
+	}
+
+	/* many syscalls, same chain */
+	for (iter = 0, ctr = 0; iter < 10000 && ctr < 100; iter++) {
+		if (iter == SCMP_SYS(chdir))
+			continue;
+		syscall = seccomp_syscall_resolve_num_arch(SCMP_ARCH_NATIVE,
+							   iter);
+		if (syscall) {
+			free(syscall);
+			rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, iter, 1,
+					      SCMP_A0(SCMP_CMP_NE, 0));
+			if (rc != 0)
+				goto out;
+			ctr++;
+		}
+	}
+
+	rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(close), 0);
+	if (rc != 0)
+		goto out;
+
+	rc = util_filter_output(&opts, ctx);
+	if (rc)
+		goto out;
+
+out:
+	seccomp_release(ctx);
+	return (rc < 0 ? -rc : rc);
+}