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-rw-r--r--src/libshared/seccomp-util.c90
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
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+++ b/src/libshared/seccomp-util.c
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+/***
+ 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;
+
+}