stuff

1 files changed, 90 insertions, 0 deletions

diff --git a/src/libshared/seccomp-util.c b/src/libshared/seccomp-util.c
new file mode 100644
index 0000000000..cebe0fce2a
--- /dev/null
+++ b/src/libshared/seccomp-util.c
@@ -0,0 +1,90 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2014 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <seccomp.h>
+#include <stddef.h>
+
+#include "macro.h"
+#include "seccomp-util.h"
+#include "string-util.h"
+
+const char* seccomp_arch_to_string(uint32_t c) {
+
+        if (c == SCMP_ARCH_NATIVE)
+                return "native";
+        if (c == SCMP_ARCH_X86)
+                return "x86";
+        if (c == SCMP_ARCH_X86_64)
+                return "x86-64";
+        if (c == SCMP_ARCH_X32)
+                return "x32";
+        if (c == SCMP_ARCH_ARM)
+                return "arm";
+
+        return NULL;
+}
+
+int seccomp_arch_from_string(const char *n, uint32_t *ret) {
+        if (!n)
+                return -EINVAL;
+
+        assert(ret);
+
+        if (streq(n, "native"))
+                *ret = SCMP_ARCH_NATIVE;
+        else if (streq(n, "x86"))
+                *ret = SCMP_ARCH_X86;
+        else if (streq(n, "x86-64"))
+                *ret = SCMP_ARCH_X86_64;
+        else if (streq(n, "x32"))
+                *ret = SCMP_ARCH_X32;
+        else if (streq(n, "arm"))
+                *ret = SCMP_ARCH_ARM;
+        else
+                return -EINVAL;
+
+        return 0;
+}
+
+int seccomp_add_secondary_archs(scmp_filter_ctx *c) {
+
+#if defined(__i386__) || defined(__x86_64__)
+        int r;
+
+        /* Add in all possible secondary archs we are aware of that
+         * this kernel might support. */
+
+        r = seccomp_arch_add(c, SCMP_ARCH_X86);
+        if (r < 0 && r != -EEXIST)
+                return r;
+
+        r = seccomp_arch_add(c, SCMP_ARCH_X86_64);
+        if (r < 0 && r != -EEXIST)
+                return r;
+
+        r = seccomp_arch_add(c, SCMP_ARCH_X32);
+        if (r < 0 && r != -EEXIST)
+                return r;
+
+#endif
+
+        return 0;
+
+}