1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOG_TAG "Zygote" 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/sockets.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/zygote.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/log.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <time.h> 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdint.h> 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <arpa/inet.h> 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/socket.h> 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ZYGOTE_SOCKET "zygote" 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ZYGOTE_RETRY_COUNT 1000 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ZYGOTE_RETRY_MILLIS 500 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void replace_nl(char *str); 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If sendStdio is non-zero, the current process's stdio file descriptors 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * will be sent and inherited by the spawned process. 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int send_request(int fd, int sendStdio, int argc, const char **argv) 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifndef HAVE_ANDROID_OS 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // not supported on simulator targets 4901dda204cd28fe181691b4a44a51be7e5666d0c8Steve Block //ALOGE("zygote_* not supported on simulator targets"); 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else /* HAVE_ANDROID_OS */ 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uint32_t pid; 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct iovec ivs[2]; 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct msghdr msg; 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char argc_buffer[12]; 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *newline_string = "\n"; 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct cmsghdr *cmsg; 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char msgbuf[CMSG_SPACE(sizeof(int) * 3)]; 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int *cmsg_payload; 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ssize_t ret; 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&msg, 0, sizeof(msg)); 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&ivs, 0, sizeof(ivs)); 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // First line is arg count 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(argc_buffer, sizeof(argc_buffer), "%d\n", argc); 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_base = argc_buffer; 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_len = strlen(argc_buffer); 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_iov = ivs; 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_iovlen = 1; 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (sendStdio != 0) { 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Pass the file descriptors with the first write 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_control = msgbuf; 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_controllen = sizeof msgbuf; 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg = CMSG_FIRSTHDR(&msg); 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg->cmsg_len = CMSG_LEN(3 * sizeof(int)); 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg->cmsg_level = SOL_SOCKET; 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg->cmsg_type = SCM_RIGHTS; 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg_payload = (int *)CMSG_DATA(cmsg); 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg_payload[0] = STDIN_FILENO; 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg_payload[1] = STDOUT_FILENO; 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cmsg_payload[2] = STDERR_FILENO; 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ret = sendmsg(fd, &msg, MSG_NOSIGNAL); 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (ret < 0 && errno == EINTR); 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ret < 0) { 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Only send the fd's once 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_control = NULL; 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_controllen = 0; 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // replace any newlines with spaces and send the args 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < argc; i++) { 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *tofree = NULL; 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *toprint; 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project toprint = argv[i]; 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strchr(toprint, '\n') != NULL) { 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tofree = strdup(toprint); 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project toprint = tofree; 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project replace_nl(tofree); 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_base = (char *)toprint; 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_len = strlen(toprint); 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[1].iov_base = (char *)newline_string; 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[1].iov_len = 1; 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_iovlen = 2; 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ret = sendmsg(fd, &msg, MSG_NOSIGNAL); 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (ret < 0 && errno == EINTR); 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tofree != NULL) { 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(tofree); 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ret < 0) { 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Read the pid, as a 4-byte network-order integer 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_base = &pid; 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_len = sizeof(pid); 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.msg_iovlen = 1; 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ret = recvmsg(fd, &msg, MSG_NOSIGNAL | MSG_WAITALL); 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (ret < 0 && errno == EINTR); 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ret < 0) { 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_len -= ret; 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ivs[0].iov_base += ret; 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (ivs[0].iov_len > 0); 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid = ntohl(pid); 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return pid; 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif /* HAVE_ANDROID_OS */ 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint zygote_run_wait(int argc, const char **argv, void (*post_run_func)(int)) 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int pid; 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int err; 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *newargv[argc + 1]; 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = socket_local_client(ZYGOTE_SOCKET, 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_RESERVED, AF_LOCAL); 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) { 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // The command socket is passed to the peer as close-on-exec 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // and will close when the peer dies 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project newargv[0] = "--peer-wait"; 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memcpy(newargv + 1, argv, argc * sizeof(*argv)); 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid = send_request(fd, 1, argc + 1, newargv); 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (pid > 0 && post_run_func != NULL) { 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project post_run_func(pid); 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Wait for socket to close 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dummy; 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project err = read(fd, &dummy, sizeof(dummy)); 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while ((err < 0 && errno == EINTR) || err != 0); 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project err = close(fd); 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (err < 0 && errno == EINTR); 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Spawns a new dalvik instance via the Zygote process. The non-zygote 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * arguments are passed to com.android.internal.os.RuntimeInit(). The 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * first non-option argument should be a class name in the system class path. 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * The arg list may start with zygote params such as --set-uid. 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If sendStdio is non-zero, the current process's stdio file descriptors 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * will be sent and inherited by the spawned process. 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * The pid of the child process is returned, or -1 if an error was 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * encountered. 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * zygote_run_oneshot waits up to ZYGOTE_RETRY_COUNT * 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * ZYGOTE_RETRY_MILLIS for the zygote socket to be available. 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint zygote_run_oneshot(int sendStdio, int argc, const char **argv) 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd = -1; 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int err; 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int retries; 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int pid; 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char **newargv = argv; 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const int newargc = argc; 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (retries = 0; (fd < 0) && (retries < ZYGOTE_RETRY_COUNT); retries++) { 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (retries > 0) { 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct timespec ts; 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&ts, 0, sizeof(ts)); 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ts.tv_nsec = ZYGOTE_RETRY_MILLIS * 1000 * 1000; 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project err = nanosleep (&ts, &ts); 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (err < 0 && errno == EINTR); 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = socket_local_client(ZYGOTE_SOCKET, AF_LOCAL, 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_RESERVED); 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) { 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid = send_request(fd, 0, newargc, newargv); 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project err = close(fd); 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (err < 0 && errno == EINTR); 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return pid; 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Replaces all occurrances of newline with space. 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void replace_nl(char *str) 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(; *str; str++) { 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (*str == '\n') { 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *str = ' '; 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 268