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