67 pid_t ExecWithoutWait(const std::vector<std::string>& arg_vector, std::string* error_msg) {  in ExecWithoutWait()  argument
97     *error_msg = StringPrintf("Failed to execute (%s) because fork failed: %s",  in ExecWithoutWait()
109                      std::string* error_msg) {  in WaitChild()  argument
114     *error_msg = StringPrintf("waitid failed for (%s) pid %d: %s",  in WaitChild()
121     *error_msg = StringPrintf("waitid failed for (%s): wanted pid %d, got %d: %s",  in WaitChild()
129     *error_msg =  in WaitChild()
143                                         std::string* error_msg) {  in WaitChildWithTimeoutFallback()  argument
157   ExecResult result = WaitChild(pid, arg_vector, /*no_wait=*/true, error_msg);  in WaitChildWithTimeoutFallback()
168     *error_msg =  in WaitChildWithTimeoutFallback()
183                                 std::string* error_msg) {  in WaitChildWithTimeout()  argument
198     *error_msg = StringPrintf("poll failed for pid %d: %s", pid, strerror(errno));  in WaitChildWithTimeout()
202     *error_msg =  in WaitChildWithTimeout()
210   return WaitChild(pid, arg_vector, /*no_wait=*/true, error_msg);  in WaitChildWithTimeout()
243                                  std::string* error_msg) const {  in ExecAndReturnCode()
244   return ExecAndReturnResult(arg_vector, /*timeout_sec=*/-1, error_msg).exit_code;  in ExecAndReturnCode()
249                                           std::string* error_msg) const {  in ExecAndReturnResult()
250   return ExecAndReturnResult(arg_vector, timeout_sec, ExecCallbacks(), /*stat=*/nullptr, error_msg);  in ExecAndReturnResult()
257                                           /*out*/ std::string* error_msg) const {  in ExecAndReturnResult()
259     *error_msg = "Timeout too large";  in ExecAndReturnResult()
264   pid_t pid = ExecWithoutWait(arg_vector, error_msg);  in ExecAndReturnResult()
277           WaitChildWithTimeout(pid, std::move(pidfd), arg_vector, timeout_sec * 1000, error_msg);  in ExecAndReturnResult()
281       result = WaitChildWithTimeoutFallback(pid, arg_vector, timeout_sec * 1000, error_msg);  in ExecAndReturnResult()
284     result = WaitChild(pid, arg_vector, /*no_wait=*/true, error_msg);  in ExecAndReturnResult()
306 bool ExecUtils::Exec(const std::vector<std::string>& arg_vector, std::string* error_msg) const {  in Exec()
307   int status = ExecAndReturnCode(arg_vector, error_msg);  in Exec()
313     *error_msg =  in Exec()
351                         /*out*/ std::string* error_msg) const {  in GetStat()
355     *error_msg = StringPrintf("Failed to read /proc/%d/stat: %s", pid, strerror(errno));  in GetStat()
360     *error_msg = StringPrintf("Failed to parse /proc/%d/stat '%s'", pid, stat_content.c_str());  in GetStat()