2 * Check decoding of seccomp SECCOMP_SET_MODE_FILTER.
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Copyright (c) 2016-2017 The strace developers.
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9 * modification, are permitted provided that the following conditions
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34 #include <asm/unistd.h>
37 #ifdef HAVE_LINUX_SECCOMP_H
38 # include <linux/seccomp.h>
40 #ifdef HAVE_LINUX_FILTER_H
41 # include <linux/filter.h>
44 #if defined __NR_seccomp && defined SECCOMP_SET_MODE_FILTER
51 struct sock_filter *const filter = tail_alloc(sizeof(*filter) * N);
52 const void *const efault = tail_alloc(1);
53 TAIL_ALLOC_OBJECT_CONST_PTR(struct sock_fprog, prog);
56 prog->filter = filter;
58 rc = syscall(__NR_seccomp, SECCOMP_SET_MODE_FILTER, -1, prog);
59 printf("seccomp(SECCOMP_SET_MODE_FILTER, %s, {len=%u, filter=%p})"
60 " = %ld %s (%m)\n", "SECCOMP_FILTER_FLAG_TSYNC|0xfffffffe",
61 prog->len, prog->filter, rc, errno2name());
63 rc = syscall(__NR_seccomp, SECCOMP_SET_MODE_FILTER, -2L, efault);
64 printf("seccomp(SECCOMP_SET_MODE_FILTER, %s, %p) = %ld %s (%m)\n",
65 "0xfffffffe /* SECCOMP_FILTER_FLAG_??? */",
66 efault, rc, errno2name());
68 puts("+++ exited with 0 +++");
74 SKIP_MAIN_UNDEFINED("__NR_seccomp && SECCOMP_SET_MODE_FILTER")