49 lines · c
1// RUN: %clang %s -o %t && %run %t2// capget() and capset() are not intercepted on Android.3// UNSUPPORTED: android4 5#include <assert.h>6#include <errno.h>7#include <linux/capability.h>8#include <stdio.h>9#include <stdlib.h>10 11#include "sanitizer_common/sanitizer_specific.h"12 13/* Use capget() and capset() from glibc. */14int capget(cap_user_header_t header, cap_user_data_t data);15int capset(cap_user_header_t header, const cap_user_data_t data);16 17static void test(int version, int u32s) {18 struct __user_cap_header_struct hdr = {19 .version = version,20 .pid = 0,21 };22 struct __user_cap_data_struct data[u32s];23 if (capget(&hdr, data)) {24 assert(errno == EINVAL);25 /* Check that memory is not touched. */26#if __has_feature(memory_sanitizer)27 assert(__msan_test_shadow(data, sizeof(data)) == 0);28#endif29 hdr.version = version;30 int err = capset(&hdr, data);31 assert(errno == EINVAL);32 } else {33 for (int i = 0; i < u32s; i++)34 printf("%x %x %x\n", data[i].effective, data[i].permitted,35 data[i].inheritable);36 int err = capset(&hdr, data);37 assert(!err);38 }39}40 41int main() {42 test(0, 1); /* Test an incorrect version. */43 test(_LINUX_CAPABILITY_VERSION_1, _LINUX_CAPABILITY_U32S_1);44 test(_LINUX_CAPABILITY_VERSION_2, _LINUX_CAPABILITY_U32S_2);45 test(_LINUX_CAPABILITY_VERSION_3, _LINUX_CAPABILITY_U32S_3);46 47 return EXIT_SUCCESS;48}49