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// Copyright 2014 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <errno.h>
#include <limits.h>
#include <string.h> // strerror
#include <sys/socket.h>
#include <sys/statfs.h>
#include <sys/cygwin.h>
#include <unistd.h>
#include <windows.h>
#include <cstdlib>
#include <cstdio>
#include "src/main/cpp/blaze_util.h"
#include "src/main/cpp/blaze_util_platform.h"
#include "src/main/cpp/util/errors.h"
#include "src/main/cpp/util/exit_code.h"
#include "src/main/cpp/util/file.h"
#include "src/main/cpp/util/strings.h"
namespace blaze {
using blaze_util::die;
using blaze_util::pdie;
using std::string;
using std::vector;
void WarnFilesystemType(const string& output_base) {
}
string GetSelfPath() {
char buffer[PATH_MAX] = {};
ssize_t bytes = readlink("/proc/self/exe", buffer, sizeof(buffer));
if (bytes == sizeof(buffer)) {
// symlink contents truncated
bytes = -1;
errno = ENAMETOOLONG;
}
if (bytes == -1) {
pdie(blaze_exit_code::INTERNAL_ERROR, "error reading /proc/self/exe");
}
buffer[bytes] = '\0'; // readlink does not NUL-terminate
return string(buffer);
}
string GetOutputRoot() {
return "/var/tmp";
}
pid_t GetPeerProcessId(int socket) {
struct ucred creds = {};
socklen_t len = sizeof creds;
if (getsockopt(socket, SOL_SOCKET, SO_PEERCRED, &creds, &len) == -1) {
pdie(blaze_exit_code::LOCAL_ENVIRONMENTAL_ERROR,
"can't get server pid from connection");
}
return creds.pid;
}
uint64_t MonotonicClock() {
struct timespec ts = {};
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec * 1000000000LL + ts.tv_nsec;
}
uint64_t ProcessClock() {
struct timespec ts = {};
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
return ts.tv_sec * 1000000000LL + ts.tv_nsec;
}
void SetScheduling(bool batch_cpu_scheduling, int io_nice_level) {
// TODO(bazel-team): There should be a similar function on Windows.
}
string GetProcessCWD(int pid) {
char server_cwd[PATH_MAX] = {};
if (readlink(
("/proc/" + ToString(pid) + "/cwd").c_str(),
server_cwd, sizeof(server_cwd)) < 0) {
return "";
}
return string(server_cwd);
}
bool IsSharedLibrary(const string &filename) {
return blaze_util::ends_with(filename, ".dll");
}
string GetDefaultHostJavabase() {
const char *javahome = getenv("JAVA_HOME");
if (javahome == NULL) {
die(blaze_exit_code::LOCAL_ENVIRONMENTAL_ERROR,
"Error: JAVA_HOME not set.");
}
return javahome;
}
// Replace the current process with the given program in the given working
// directory, using the given argument vector.
// This function does not return on success.
void ExecuteProgram(const string& exe, const vector<string>& args_vector) {
if (VerboseLogging()) {
string dbg;
for (const auto& s : args_vector) {
dbg.append(s);
dbg.append(" ");
}
char cwd[PATH_MAX] = {};
if (getcwd(cwd, sizeof(cwd)) == NULL) {
pdie(blaze_exit_code::LOCAL_ENVIRONMENTAL_ERROR, "getcwd() failed");
}
fprintf(stderr, "Invoking binary %s in %s:\n %s\n", exe.c_str(), cwd,
dbg.c_str());
}
// Build full command line.
string cmdline;
bool first = true;
for (const auto& s : args_vector) {
if (first) {
first = false;
// Skip first argument, instead use quoted executable name with ".exe"
// suffix.
cmdline.append("\"");
cmdline.append(exe);
cmdline.append(".exe");
cmdline.append("\"");
continue;
} else {
cmdline.append(" ");
}
cmdline.append(s);
}
// Copy command line into a mutable buffer.
// CreateProcess is allowed to mutate its command line argument.
// Max command line length is per CreateProcess documentation
// (https://msdn.microsoft.com/en-us/library/ms682425(VS.85).aspx)
static const int kMaxCmdLineLength = 32768;
char actual_line[kMaxCmdLineLength];
if (cmdline.length() >= kMaxCmdLineLength) {
pdie(255, "Command line too long: %s", cmdline.c_str());
}
strncpy(actual_line, cmdline.c_str(), kMaxCmdLineLength);
// Add trailing '\0' to be sure.
actual_line[kMaxCmdLineLength - 1] = '\0';
// Execute program.
STARTUPINFO startupinfo = {0};
PROCESS_INFORMATION pi = {0};
bool success = CreateProcess(
nullptr, // _In_opt_ LPCTSTR lpApplicationName,
actual_line, // _Inout_opt_ LPTSTR lpCommandLine,
nullptr, // _In_opt_ LPSECURITY_ATTRIBUTES lpProcessAttributes,
nullptr, // _In_opt_ LPSECURITY_ATTRIBUTES lpThreadAttributes,
true, // _In_ BOOL bInheritHandles,
0, // _In_ DWORD dwCreationFlags,
nullptr, // _In_opt_ LPVOID lpEnvironment,
nullptr, // _In_opt_ LPCTSTR lpCurrentDirectory,
&startupinfo, // _In_ LPSTARTUPINFO lpStartupInfo,
&pi); // _Out_ LPPROCESS_INFORMATION lpProcessInformation
if (!success) {
pdie(255, "Error %u executing: %s\n", GetLastError(), actual_line);
}
WaitForSingleObject(pi.hProcess, INFINITE);
DWORD exit_code;
GetExitCodeProcess(pi.hProcess, &exit_code);
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
// Emulate execv.
exit(exit_code);
}
string ListSeparator() { return ";"; }
string ConvertPath(const string& path) {
char* wpath = static_cast<char*>(cygwin_create_path(
CCP_POSIX_TO_WIN_A, static_cast<const void*>(path.c_str())));
string result(wpath);
free(wpath);
return result;
}
} // namespace blaze
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