64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// RUN: %clangxx_msan -m64 -O0 %s -o %t && %t 2>&1
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// RUN: %clangxx_msan -m64 -O3 %s -o %t && %t 2>&1
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#include <assert.h>
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#include <errno.h>
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#include <glob.h>
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#include <stdio.h>
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#include <string.h>
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#include <sanitizer/linux_syscall_hooks.h>
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#include <sanitizer/msan_interface.h>
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/* Test the presence of __sanitizer_syscall_ in the tool runtime, and general
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sanity of their behaviour. */
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int main(int argc, char *argv[]) {
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char buf[1000];
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const int kTen = 10;
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memset(buf, 0, sizeof(buf));
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__msan_unpoison(buf, sizeof(buf));
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__sanitizer_syscall_pre_recvmsg(0, buf, 0);
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__sanitizer_syscall_pre_rt_sigpending(buf, kTen);
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__sanitizer_syscall_pre_getdents(0, buf, kTen);
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__sanitizer_syscall_pre_getdents64(0, buf, kTen);
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__msan_unpoison(buf, sizeof(buf));
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__sanitizer_syscall_post_recvmsg(0, 0, buf, 0);
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__sanitizer_syscall_post_rt_sigpending(-1, buf, kTen);
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__sanitizer_syscall_post_getdents(0, 0, buf, kTen);
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__sanitizer_syscall_post_getdents64(0, 0, buf, kTen);
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assert(__msan_test_shadow(buf, sizeof(buf)) == -1);
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__msan_unpoison(buf, sizeof(buf));
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__sanitizer_syscall_post_recvmsg(kTen, 0, buf, 0);
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// Tell the kernel that the output struct size is 10 bytes, verify that those
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// bytes are unpoisoned, and the next byte is not.
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__msan_poison(buf, kTen + 1);
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__sanitizer_syscall_post_rt_sigpending(0, buf, kTen);
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assert(__msan_test_shadow(buf, sizeof(buf)) == kTen);
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__msan_poison(buf, kTen + 1);
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__sanitizer_syscall_post_getdents(kTen, 0, buf, kTen);
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assert(__msan_test_shadow(buf, sizeof(buf)) == kTen);
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__msan_poison(buf, kTen + 1);
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__sanitizer_syscall_post_getdents64(kTen, 0, buf, kTen);
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assert(__msan_test_shadow(buf, sizeof(buf)) == kTen);
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__msan_poison(buf, sizeof(buf));
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__sanitizer_syscall_post_clock_getres(0, 0, buf);
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assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(long) * 2);
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__msan_poison(buf, sizeof(buf));
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__sanitizer_syscall_post_clock_gettime(0, 0, buf);
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assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(long) * 2);
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// Failed syscall does not write to the buffer.
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__msan_poison(buf, sizeof(buf));
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__sanitizer_syscall_post_clock_gettime(-1, 0, buf);
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assert(__msan_test_shadow(buf, sizeof(buf)) == 0);
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return 0;
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}
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