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AnyPS5/core/libs/tests/GuestSystemConfiguration.cpp
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#include "prx/libc/include/general/VabiMacros.hpp"
#include "prx/libkernel/KernelErrors.hpp"
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <stdexcept>
struct SceKernelSystemSwVersion {
std::uint64_t size;
char versionString[0x1C];
std::uint32_t version;
};
static_assert(offsetof(SceKernelSystemSwVersion, size) == 0x00);
static_assert(offsetof(SceKernelSystemSwVersion, versionString) == 0x08);
static_assert(offsetof(SceKernelSystemSwVersion, version) == 0x24);
static_assert(sizeof(SceKernelSystemSwVersion) == 0x28);
extern "C" {
std::int64_t APS5_VABI sysconf_nid_postfix(int);
int APS5_VABI getpagesize_nid_postfix();
int* APS5_VABI __error_nid_postfix();
int APS5_VABI sysctl_nid_postfix(const int*, std::uint32_t, void*, std::size_t*, const void*, std::size_t);
int APS5_VABI sysctlbyname_nid_postfix(const char*, void*, std::size_t*, const void*, std::size_t);
int APS5_VABI sysctlnametomib_nid_postfix(const char*, int*, std::size_t*);
int APS5_VABI sceKernelGetSystemSwVersion_nid_postfix(SceKernelSystemSwVersion*);
int APS5_VABI getpid_nid_postfix();
std::uint64_t APS5_VABI sceKernelGetTscFrequency(void);
extern char** environ_nid_postfix;
}
static void Require(bool value) { if (!value) std::abort(); }
static void CheckProcessorCountSysctl() {
const int mib[] = {6, 3};
const int processors = static_cast<int>(sysconf_nid_postfix(58));
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctl_nid_postfix(mib, 2, nullptr, &length, nullptr, 0) == 0 && length == sizeof(int));
int value = 0;
length = sizeof(value);
Require(sysctl_nid_postfix(mib, 2, &value, &length, nullptr, 0) == 0 && value == processors && length == sizeof(int));
value = 0;
length = 16;
Require(sysctlbyname_nid_postfix("hw.ncpu", &value, &length, nullptr, 0) == 0 && value == processors && length == sizeof(int));
Require(*__error_nid_postfix() == 13);
unsigned char bytes[4] = {0xaa, 0xaa, 0xaa, 0xaa};
length = 2;
Require(sysctlbyname_nid_postfix("hw.ncpu", bytes, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
Require(length == 2 && bytes[2] == 0xaa && bytes[3] == 0xaa);
Require(sysctl_nid_postfix(mib, 2, bytes, nullptr, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
length = sizeof(value);
Require(sysctl_nid_postfix(mib, 2, &value, &length, &value, sizeof(value)) == -1 && *__error_nid_postfix() == 1);
Require(sysctl_nid_postfix(mib, 1, &value, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 22);
Require(sysctl_nid_postfix(mib, 25, &value, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 22);
Require(sysctl_nid_postfix(nullptr, 2, &value, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 14);
Require(sysctlbyname_nid_postfix(nullptr, &value, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 14);
bool threw = false;
try {
sysctlbyname_nid_postfix("kern.osreldate", &value, &length, nullptr, 0);
} catch (const std::runtime_error&) {
threw = true;
}
Require(threw);
threw = false;
const int unknown[] = {6, 99};
try {
sysctl_nid_postfix(unknown, 2, &value, &length, nullptr, 0);
} catch (const std::runtime_error&) {
threw = true;
}
Require(threw);
}
static void CheckPageSizeSysctl() {
const int mib[] = {6, 7};
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctl_nid_postfix(mib, 2, nullptr, &length, nullptr, 0) == 0 && length == sizeof(int));
int value = 0;
length = sizeof(value);
Require(sysctl_nid_postfix(mib, 2, &value, &length, nullptr, 0) == 0 && value == 0x4000 && length == sizeof(int));
value = 0;
length = 16;
Require(sysctlbyname_nid_postfix("hw.pagesize", &value, &length, nullptr, 0) == 0 && value == 0x4000 && length == sizeof(int));
Require(*__error_nid_postfix() == 13);
unsigned char bytes[4] = {0xaa, 0xaa, 0xaa, 0xaa};
length = 2;
Require(sysctlbyname_nid_postfix("hw.pagesize", bytes, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
Require(length == 2 && bytes[2] == 0xaa && bytes[3] == 0xaa);
length = sizeof(value);
Require(sysctl_nid_postfix(mib, 2, &value, &length, &value, sizeof(value)) == -1 && *__error_nid_postfix() == 1);
Require(sysctlbyname_nid_postfix("hw.pagesize", &value, &length, &value, sizeof(value)) == -1 && *__error_nid_postfix() == 1);
}
static void CheckPhysicalMemorySysctl(int number, const char* name) {
const int mib[] = {6, number};
const std::uint64_t expected = static_cast<std::uint64_t>(sysconf_nid_postfix(121)) * 0x4000;
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctl_nid_postfix(mib, 2, nullptr, &length, nullptr, 0) == 0 && length == sizeof(std::uint64_t));
std::uint64_t value = 0;
length = sizeof(value);
Require(sysctl_nid_postfix(mib, 2, &value, &length, nullptr, 0) == 0 && value == expected && length == sizeof(std::uint64_t));
value = 0;
length = 16;
Require(sysctlbyname_nid_postfix(name, &value, &length, nullptr, 0) == 0 && value == expected && length == sizeof(std::uint64_t));
Require(*__error_nid_postfix() == 13);
unsigned char bytes[8] = {0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa};
length = 4;
Require(sysctlbyname_nid_postfix(name, bytes, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
Require(length == 4 && bytes[4] == 0xaa);
length = sizeof(value);
Require(sysctl_nid_postfix(mib, 2, &value, &length, &value, sizeof(value)) == -1 && *__error_nid_postfix() == 1);
Require(sysctlbyname_nid_postfix(name, &value, &length, &value, sizeof(value)) == -1 && *__error_nid_postfix() == 1);
}
#if defined(__x86_64__) || defined(__i386__)
static void CheckModelSysctl() {
const int mib[] = {6, 2};
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctl_nid_postfix(mib, 2, nullptr, &length, nullptr, 0) == 0 && length > 1);
const std::size_t size = length;
char model[128] = {};
length = sizeof(model);
Require(sysctlbyname_nid_postfix("hw.model", model, &length, nullptr, 0) == 0 && length == size);
Require(std::strlen(model) + 1 == size && model[0] != ' ');
Require(*__error_nid_postfix() == 13);
char truncated[4] = {};
length = sizeof(truncated);
Require(sysctl_nid_postfix(mib, 2, truncated, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
Require(length == sizeof(truncated) && std::memcmp(truncated, model, sizeof(truncated)) == 0);
length = sizeof(model);
Require(sysctlbyname_nid_postfix("hw.model", model, &length, model, size) == -1 && *__error_nid_postfix() == 1);
}
#endif
static void CheckTscFrequencySysctl() {
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctlbyname_nid_postfix("machdep.tsc_freq", nullptr, &length, nullptr, 0) == 0 && length == sizeof(std::uint64_t));
std::uint64_t value = 0;
length = sizeof(value);
Require(sysctlbyname_nid_postfix("machdep.tsc_freq", &value, &length, nullptr, 0) == 0);
Require(value == sceKernelGetTscFrequency() && value != 0 && length == sizeof(value));
Require(*__error_nid_postfix() == 13);
std::uint32_t truncated = 0;
length = sizeof(truncated);
Require(sysctlbyname_nid_postfix("machdep.tsc_freq", &truncated, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
length = sizeof(value);
Require(sysctlbyname_nid_postfix("machdep.tsc_freq", &value, &length, &value, sizeof(value)) == -1 && *__error_nid_postfix() == 1);
}
static void CheckMachdepCachelineSizeSysctl() {
*__error_nid_postfix() = 13;
int value = 0x5a5a5a5a;
std::size_t length = sizeof(value);
Require(sysctlbyname_nid_postfix("machdep.cacheline_size", &value, &length, nullptr, 0) == -1);
Require(*__error_nid_postfix() == 2);
Require(value == 0x5a5a5a5a);
}
static void CheckPathnameSysctl() {
*__error_nid_postfix() = 13;
char buffer[32] = {};
std::size_t length = sizeof(buffer);
Require(sysctlbyname_nid_postfix("kern.proc.pathname", buffer, &length, nullptr, 0) == -1);
Require(*__error_nid_postfix() == 22);
const int mibTooShort[] = {1, 14, 12};
Require(sysctl_nid_postfix(mibTooShort, 3, buffer, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 22);
const int mibTooLong[] = {1, 14, 12, -1, 0};
Require(sysctl_nid_postfix(mibTooLong, 5, buffer, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 22);
Require(sysctl_nid_postfix(mibTooShort, 3, buffer, &length, buffer, sizeof(buffer)) == -1 && *__error_nid_postfix() == 1);
Require(sysctl_nid_postfix(mibTooLong, 5, buffer, &length, buffer, sizeof(buffer)) == -1 && *__error_nid_postfix() == 1);
Require(sysctlbyname_nid_postfix("kern.proc.pathname", buffer, &length, buffer, sizeof(buffer)) == -1 && *__error_nid_postfix() == 1);
const int mibSelf[] = {1, 14, 12, -1};
length = 0;
Require(sysctl_nid_postfix(mibSelf, 4, nullptr, &length, nullptr, 0) == 0 && length == sizeof("/app0/eboot.bin"));
std::memset(buffer, 0xaa, sizeof(buffer));
length = sizeof(buffer);
Require(sysctl_nid_postfix(mibSelf, 4, buffer, &length, nullptr, 0) == 0);
Require(length == sizeof("/app0/eboot.bin"));
Require(std::strcmp(buffer, "/app0/eboot.bin") == 0);
const int callerPid = getpid_nid_postfix();
const int mibPid[] = {1, 14, 12, callerPid};
std::memset(buffer, 0xaa, sizeof(buffer));
length = sizeof(buffer);
Require(sysctl_nid_postfix(mibPid, 4, buffer, &length, nullptr, 0) == 0);
Require(length == sizeof("/app0/eboot.bin"));
Require(std::strcmp(buffer, "/app0/eboot.bin") == 0);
const int mibForeign[] = {1, 14, 12, callerPid + 1000};
Require(sysctl_nid_postfix(mibForeign, 4, buffer, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 3);
length = 5;
std::memset(buffer, 0xaa, sizeof(buffer));
Require(sysctl_nid_postfix(mibSelf, 4, buffer, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
Require(length == 5 && buffer[4] == '0' && buffer[5] == static_cast<char>(0xaa));
length = sizeof(buffer);
Require(sysctl_nid_postfix(mibSelf, 4, buffer, &length, buffer, sizeof(buffer)) == -1 && *__error_nid_postfix() == 1);
}
static void CheckLeafWithTrailingComponent() {
const int leaves[][2] = {{6, 3}, {6, 2}, {6, 5}, {6, 7}, {1, 37}};
for (const auto& leaf : leaves) {
const int mib[] = {leaf[0], leaf[1], 0};
char buffer[8] = {};
std::size_t length = sizeof(buffer);
*__error_nid_postfix() = 13;
Require(sysctl_nid_postfix(mib, 3, buffer, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 20);
Require(sysctl_nid_postfix(mib, 3, buffer, &length, buffer, sizeof(buffer)) == -1 && *__error_nid_postfix() == 20);
Require(length == sizeof(buffer));
}
}
static void CheckSystemSwVersion() {
*__error_nid_postfix() = 13;
Require(sceKernelGetSystemSwVersion_nid_postfix(nullptr) == SCE_KERNEL_ERROR_EFAULT && *__error_nid_postfix() == 13);
const std::uint64_t sizes[] = {0, 24, 39, 40, 41, 48, 64};
for (const std::uint64_t size : sizes) {
struct {
std::uint64_t prefix;
SceKernelSystemSwVersion version;
unsigned char suffix[88];
} storage;
std::memset(&storage, 0xaa, sizeof(storage));
storage.version.size = size;
*__error_nid_postfix() = 13;
Require(sceKernelGetSystemSwVersion_nid_postfix(&storage.version) == 0 && *__error_nid_postfix() == 13);
Require(storage.prefix == 0xaaaaaaaaaaaaaaaaull && storage.version.size == size);
Require(std::strcmp(storage.version.versionString, "01.000.000") == 0);
for (std::size_t i = sizeof("01.000.000"); i < sizeof(storage.version.versionString); ++i) {
Require(storage.version.versionString[i] == 0);
}
Require(storage.version.version == 0x01000000);
for (unsigned char byte : storage.suffix) Require(byte == 0xaa);
}
}
static void CheckPseudoRandomSysctl() {
*__error_nid_postfix() = 13;
unsigned char first[64] = {};
unsigned char second[64] = {};
std::size_t length = sizeof(first);
Require(sysctlbyname_nid_postfix("kern.rng_pseudo", first, &length, nullptr, 0) == 0 && length == sizeof(first));
length = sizeof(second);
Require(sysctlbyname_nid_postfix("kern.rng_pseudo", second, &length, nullptr, 0) == 0 && length == sizeof(second));
Require(std::memcmp(first, second, sizeof(first)) != 0);
Require(*__error_nid_postfix() == 13);
Require(sysctlbyname_nid_postfix("kern.rng_pseudo", first, &length, first, sizeof(first)) == -1 && *__error_nid_postfix() == 1);
bool threw = false;
try {
sysctlbyname_nid_postfix("kern.rng_pseudo", nullptr, &length, nullptr, 0);
} catch (const std::runtime_error&) {
threw = true;
}
Require(threw);
}
static void CheckOvercommitSysctl() {
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctlbyname_nid_postfix("vm.overcommit", nullptr, &length, nullptr, 0) == 0 && length == sizeof(int));
int value = -1;
length = sizeof(value);
Require(sysctlbyname_nid_postfix("vm.overcommit", &value, &length, nullptr, 0) == 0 && value == 0 && length == sizeof(int));
Require(*__error_nid_postfix() == 13);
unsigned char bytes[4] = {0xaa, 0xaa, 0xaa, 0xaa};
length = 2;
Require(sysctlbyname_nid_postfix("vm.overcommit", bytes, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
Require(length == 2 && bytes[2] == 0xaa && bytes[3] == 0xaa);
bool threw = false;
length = sizeof(value);
try {
sysctlbyname_nid_postfix("vm.overcommit", &value, &length, &value, sizeof(value));
} catch (const std::runtime_error&) {
threw = true;
}
Require(threw);
}
static void CheckSdkVersionSysctl() {
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctlbyname_nid_postfix("kern.sdk_version", nullptr, &length, nullptr, 0) == 0 && length == sizeof(std::uint32_t));
std::uint32_t version = 0;
length = sizeof(version);
Require(sysctlbyname_nid_postfix("kern.sdk_version", &version, &length, nullptr, 0) == 0 && version == 0x01000000 && length == sizeof(std::uint32_t));
Require(*__error_nid_postfix() == 13);
unsigned char bytes[4] = {0xaa, 0xaa, 0xaa, 0xaa};
length = 2;
Require(sysctlbyname_nid_postfix("kern.sdk_version", bytes, &length, nullptr, 0) == -1 && *__error_nid_postfix() == 12);
Require(length == 2 && bytes[2] == 0xaa && bytes[3] == 0xaa);
length = sizeof(version);
Require(sysctlbyname_nid_postfix("kern.sdk_version", &version, &length, &version, sizeof(version)) == -1 && *__error_nid_postfix() == 1);
}
static void CheckArandomSysctl() {
const int mib[] = {1, 37};
*__error_nid_postfix() = 13;
std::size_t length = 0;
Require(sysctl_nid_postfix(mib, 2, nullptr, &length, nullptr, 0) == 0 && length == 0);
length = 64;
Require(sysctl_nid_postfix(mib, 2, nullptr, &length, nullptr, 0) == 0 && length == 64);
length = 300;
Require(sysctl_nid_postfix(mib, 2, nullptr, &length, nullptr, 0) == 0 && length == 256);
Require(sysctl_nid_postfix(mib, 2, nullptr, nullptr, nullptr, 0) == 0);
Require(*__error_nid_postfix() == 13);
unsigned char first[64] = {};
unsigned char second[64] = {};
length = sizeof(first);
Require(sysctl_nid_postfix(mib, 2, first, &length, nullptr, 0) == 0 && length == sizeof(first));
length = sizeof(second);
Require(sysctl_nid_postfix(mib, 2, second, &length, nullptr, 0) == 0 && length == sizeof(second));
Require(std::memcmp(first, second, sizeof(first)) != 0);
Require(*__error_nid_postfix() == 13);
unsigned char named[64] = {};
length = sizeof(named);
Require(sysctlbyname_nid_postfix("kern.arandom", named, &length, nullptr, 0) == 0 && length == sizeof(named));
Require(*__error_nid_postfix() == 13);
length = sizeof(first);
Require(sysctl_nid_postfix(mib, 2, first, &length, first, sizeof(first)) == -1 && *__error_nid_postfix() == 1);
*__error_nid_postfix() = 13;
unsigned char big[300] = {};
length = sizeof(big);
Require(sysctl_nid_postfix(mib, 2, big, &length, nullptr, 0) == 0 && length == 256);
unsigned char small[16] = {};
length = sizeof(small);
Require(sysctl_nid_postfix(mib, 2, small, &length, nullptr, 0) == 0 && length == sizeof(small));
Require(sysctl_nid_postfix(mib, 2, first, nullptr, nullptr, 0) == 0);
Require(*__error_nid_postfix() == 13);
}
static void CheckNameToMib() {
struct Expected {
const char* name;
int mib[3];
std::size_t length;
};
const Expected expected[] = {
{"hw.model", {6, 2}, 2},
{"hw.ncpu", {6, 3}, 2},
{"hw.pagesize", {6, 7}, 2},
{"hw.physmem", {6, 5}, 2},
{"hw.realmem", {6, 12}, 2},
{"kern.arandom", {1, 37}, 2},
{"kern.proc.pathname", {1, 14, 12}, 3},
};
*__error_nid_postfix() = 13;
for (const auto& entry : expected) {
std::size_t size = 0;
Require(sysctlnametomib_nid_postfix(entry.name, nullptr, &size) == 0 && size == entry.length);
int mib[5] = {0x5a5a5a5a, 0x5a5a5a5a, 0x5a5a5a5a, 0x5a5a5a5a, 0x5a5a5a5a};
size = 5;
Require(sysctlnametomib_nid_postfix(entry.name, mib, &size) == 0 && size == entry.length);
Require(std::memcmp(mib, entry.mib, entry.length * sizeof(int)) == 0 && mib[entry.length] == 0x5a5a5a5a);
}
Require(*__error_nid_postfix() == 13);
int mib[4] = {};
std::size_t size = 4;
Require(sysctlnametomib_nid_postfix("hw.ncpu", mib, &size) == 0 && size == 2);
int processors = 0;
std::size_t length = sizeof(processors);
Require(sysctl_nid_postfix(mib, static_cast<std::uint32_t>(size), &processors, &length, nullptr, 0) == 0);
Require(processors == static_cast<int>(sysconf_nid_postfix(58)));
size = 4;
Require(sysctlnametomib_nid_postfix("hw.realmem", mib, &size) == 0 && size == 2);
std::uint64_t realmem = 0;
length = sizeof(realmem);
Require(sysctl_nid_postfix(mib, static_cast<std::uint32_t>(size), &realmem, &length, nullptr, 0) == 0);
std::uint64_t namedRealmem = 0;
length = sizeof(namedRealmem);
Require(sysctlbyname_nid_postfix("hw.realmem", &namedRealmem, &length, nullptr, 0) == 0 && realmem == namedRealmem);
size = 4;
Require(sysctlnametomib_nid_postfix("kern.proc.pathname", mib, &size) == 0 && size == 3);
mib[3] = -1;
char path[32] = {};
length = sizeof(path);
Require(sysctl_nid_postfix(mib, 4, path, &length, nullptr, 0) == 0 && std::strcmp(path, "/app0/eboot.bin") == 0);
int truncated[3] = {0x5a5a5a5a, 0x5a5a5a5a, 0x5a5a5a5a};
size = 1;
Require(sysctlnametomib_nid_postfix("hw.ncpu", truncated, &size) == -1 && *__error_nid_postfix() == 12);
Require(size == 1 && truncated[0] == 6 && truncated[1] == 0x5a5a5a5a);
size = 0;
Require(sysctlnametomib_nid_postfix("hw.ncpu", truncated, &size) == -1 && *__error_nid_postfix() == 12);
Require(size == 0 && truncated[0] == 6);
size = 4;
Require(sysctlnametomib_nid_postfix("", mib, &size) == -1 && *__error_nid_postfix() == 2);
Require(sysctlnametomib_nid_postfix("machdep.cacheline_size", mib, &size) == -1 && *__error_nid_postfix() == 2);
char tooLong[1025];
std::memset(tooLong, 'a', sizeof(tooLong) - 1);
tooLong[sizeof(tooLong) - 1] = 0;
Require(sysctlnametomib_nid_postfix(tooLong, mib, &size) == -1 && *__error_nid_postfix() == 63);
tooLong[1023] = 0;
bool threw = false;
try {
sysctlnametomib_nid_postfix(tooLong, mib, &size);
} catch (const std::runtime_error&) {
threw = true;
}
Require(threw);
threw = false;
try {
sysctlnametomib_nid_postfix(nullptr, mib, &size);
} catch (const std::invalid_argument&) {
threw = true;
}
Require(threw);
threw = false;
try {
sysctlnametomib_nid_postfix("hw.ncpu", mib, nullptr);
} catch (const std::invalid_argument&) {
threw = true;
}
Require(threw);
threw = false;
try {
sysctlnametomib_nid_postfix("kern.cp_times", mib, &size);
} catch (const std::runtime_error&) {
threw = true;
}
Require(threw);
}
int main() {
CheckProcessorCountSysctl();
CheckPageSizeSysctl();
CheckPhysicalMemorySysctl(5, "hw.physmem");
CheckPhysicalMemorySysctl(12, "hw.realmem");
#if defined(__x86_64__) || defined(__i386__)
CheckModelSysctl();
#endif
CheckTscFrequencySysctl();
CheckMachdepCachelineSizeSysctl();
CheckPathnameSysctl();
CheckLeafWithTrailingComponent();
CheckSystemSwVersion();
CheckPseudoRandomSysctl();
CheckSdkVersionSysctl();
CheckOvercommitSysctl();
CheckArandomSysctl();
CheckNameToMib();
*__error_nid_postfix() = 13;
Require(sysconf_nid_postfix(3) == 128);
Require(sysconf_nid_postfix(47) == 0x4000);
Require(getpagesize_nid_postfix() == sysconf_nid_postfix(47));
Require(sysconf_nid_postfix(57) > 0);
Require(sysconf_nid_postfix(58) > 0);
Require(sysconf_nid_postfix(121) > 0);
Require(*__error_nid_postfix() == 13);
Require(sysconf_nid_postfix(-1) == -1); // verifies full-width signed return
Require(*__error_nid_postfix() == 22);
Require(sysconf_nid_postfix(0x7fffffff) == -1);
Require(environ_nid_postfix && !environ_nid_postfix[0]);
}
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