Bundle libseccomp 2.3.1

[linux-seccomp.git] / libseccomp / tools / scmp_sys_resolver.c

diff --git a/libseccomp/tools/scmp_sys_resolver.c b/libseccomp/tools/scmp_sys_resolver.c
new file mode 100644 (file)
index 0000000..9be2c24
--- /dev/null
+++ b/libseccomp/tools/scmp_sys_resolver.c
@@ -0,0 +1,96 @@
+/**
+ * Syscall resolver
+ *
+ * Copyright (c) 2012 Red Hat <pmoore@redhat.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 <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <seccomp.h>
+
+/**
+ * Print the usage information to stderr and exit
+ * @param program the name of the current program being invoked
+ *
+ * Print the usage information and exit with EINVAL.
+ *
+ */
+static void exit_usage(const char *program)
+{
+       fprintf(stderr,
+               "usage: %s [-h] [-a <arch>] [-t] <name>|<number>\n",
+               program);
+       exit(EINVAL);
+}
+
+/**
+ * main
+ */
+int main(int argc, char *argv[])
+{
+       int opt;
+       int translate = 0;
+       uint32_t arch;
+       int sys_num;
+       const char *sys_name;
+
+       arch = seccomp_arch_native();
+
+       /* parse the command line */
+       while ((opt = getopt(argc, argv, "a:ht")) > 0) {
+               switch (opt) {
+               case 'a':
+                       arch = seccomp_arch_resolve_name(optarg);
+                       if (arch == 0)
+                               exit_usage(argv[0]);
+                       break;
+               case 't':
+                       translate = 1;
+                       break;
+               case 'h':
+               default:
+                       /* usage information */
+                       exit_usage(argv[0]);
+               }
+       }
+
+       /* sanity checks */
+       if (optind >= argc)
+               exit_usage(argv[0]);
+
+       /* perform the syscall lookup */
+       if (isdigit(argv[optind][0]) || argv[optind][0] == '-') {
+               sys_num = atoi(argv[optind]);
+               sys_name = seccomp_syscall_resolve_num_arch(arch, sys_num);
+               printf("%s\n", (sys_name ? sys_name : "UNKNOWN"));
+       } else if (translate) {
+               sys_num = seccomp_syscall_resolve_name_rewrite(arch,
+                                                              argv[optind]);
+               printf("%d\n", sys_num);
+       } else {
+               sys_num = seccomp_syscall_resolve_name_arch(arch, argv[optind]);
+               printf("%d\n", sys_num);
+       }
+
+       return 0;
+}