48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
// RUN: %clang %s -o %t && %run %t
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// capget() and capset() are not intercepted on Android.
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// UNSUPPORTED: android
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#include <assert.h>
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#include <errno.h>
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#include <linux/capability.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "sanitizer_common/sanitizer_specific.h"
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/* Use capget() and capset() from glibc. */
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int capget(cap_user_header_t header, cap_user_data_t data);
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int capset(cap_user_header_t header, const cap_user_data_t data);
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static void test(int version, int u32s) {
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struct __user_cap_header_struct hdr = {
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.version = version,
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.pid = 0,
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};
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struct __user_cap_data_struct data[u32s];
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if (capget(&hdr, data)) {
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assert(errno == EINVAL);
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/* Check that memory is not touched. */
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#if __has_feature(memory_sanitizer)
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assert(__msan_test_shadow(data, sizeof(data)) == 0);
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#endif
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hdr.version = version;
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int err = capset(&hdr, data);
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assert(errno == EINVAL);
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} else {
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for (int i = 0; i < u32s; i++)
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printf("%x %x %x\n", data[i].effective, data[i].permitted,
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data[i].inheritable);
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int err = capset(&hdr, data);
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assert(!err);
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}
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}
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int main() {
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test(0, 1); /* Test an incorrect version. */
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test(_LINUX_CAPABILITY_VERSION_1, _LINUX_CAPABILITY_U32S_1);
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test(_LINUX_CAPABILITY_VERSION_2, _LINUX_CAPABILITY_U32S_2);
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test(_LINUX_CAPABILITY_VERSION_3, _LINUX_CAPABILITY_U32S_3);
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return EXIT_SUCCESS;
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}
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