util.c revision f83d0b9af5cbe4440cc41ceaa8a7806a13c86282
1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright (C) 2008 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#include <stdarg.h> 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <fcntl.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <ctype.h> 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 24504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross#include <time.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/stat.h> 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/socket.h> 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/un.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* for ANDROID_SOCKET_* */ 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/sockets.h> 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <private/android_filesystem_config.h> 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 36ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#include "log.h" 37ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#include "list.h" 38f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross#include "util.h" 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int log_fd = -1; 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Inital log level before init.rc is parsed and this this is reset. */ 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int log_level = LOG_DEFAULT_LEVEL; 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid log_set_level(int level) { 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project log_level = level; 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid log_init(void) 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project static const char *name = "/dev/__kmsg__"; 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (mknod(name, S_IFCHR | 0600, (1 << 8) | 11) == 0) { 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project log_fd = open(name, O_WRONLY); 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(log_fd, F_SETFD, FD_CLOEXEC); 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unlink(name); 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOG_BUF_MAX 512 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid log_write(int level, const char *fmt, ...) 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char buf[LOG_BUF_MAX]; 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_list ap; 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (level > log_level) return; 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (log_fd < 0) return; 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_start(ap, fmt); 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project vsnprintf(buf, LOG_BUF_MAX, fmt, ap); 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project buf[LOG_BUF_MAX - 1] = 0; 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_end(ap); 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write(log_fd, buf, strlen(buf)); 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * android_name_to_id - returns the integer uid/gid associated with the given 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * name, or -1U on error. 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic unsigned int android_name_to_id(const char *name) 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct android_id_info *info = android_ids; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int n; 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (n = 0; n < android_id_count; n++) { 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!strcmp(info[n].name, name)) 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return info[n].aid; 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1U; 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * decode_uid - decodes and returns the given string, which can be either the 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * numeric or name representation, into the integer uid or gid. Returns -1U on 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * error. 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectunsigned int decode_uid(const char *s) 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int v; 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!s || *s == '\0') 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1U; 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (isalpha(s[0])) 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return android_name_to_id(s); 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = 0; 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v = (unsigned int) strtoul(s, 0, 0); 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno) 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1U; 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return v; 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * create_socket - creates a Unix domain socket in ANDROID_SOCKET_DIR 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * ("/dev/socket") as dictated in init.rc. This socket is inherited by the 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * daemon. We communicate the file descriptor's value via the environment 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * variable ANDROID_SOCKET_ENV_PREFIX<name> ("ANDROID_SOCKET_foo"). 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint create_socket(const char *name, int type, mode_t perm, uid_t uid, gid_t gid) 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_un addr; 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, ret; 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = socket(PF_UNIX, type, 0); 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) { 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Failed to open socket '%s': %s\n", name, strerror(errno)); 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&addr, 0 , sizeof(addr)); 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.sun_family = AF_UNIX; 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(addr.sun_path, sizeof(addr.sun_path), ANDROID_SOCKET_DIR"/%s", 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project name); 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ret = unlink(addr.sun_path); 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ret != 0 && errno != ENOENT) { 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Failed to unlink old socket '%s': %s\n", name, strerror(errno)); 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto out_close; 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ret = bind(fd, (struct sockaddr *) &addr, sizeof (addr)); 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ret) { 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Failed to bind socket '%s': %s\n", name, strerror(errno)); 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto out_unlink; 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chown(addr.sun_path, uid, gid); 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chmod(addr.sun_path, perm); 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project INFO("Created socket '%s' with mode '%o', user '%d', group '%d'\n", 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.sun_path, perm, uid, gid); 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectout_unlink: 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unlink(addr.sun_path); 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectout_close: 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* reads a file, making sure it is terminated with \n \0 */ 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid *read_file(const char *fn, unsigned *_sz) 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *data; 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int sz; 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = 0; 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(fn, O_RDONLY); 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd < 0) return 0; 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sz = lseek(fd, 0, SEEK_END); 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(sz < 0) goto oops; 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(lseek(fd, 0, SEEK_SET) != 0) goto oops; 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = (char*) malloc(sz + 2); 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(data == 0) goto oops; 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(read(fd, data, sz) != sz) goto oops; 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data[sz] = '\n'; 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data[sz+1] = 0; 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(_sz) *_sz = sz; 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return data; 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectoops: 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(data != 0) free(data); 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid list_init(struct listnode *node) 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project node->next = node; 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project node->prev = node; 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid list_add_tail(struct listnode *head, struct listnode *item) 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project item->next = head; 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project item->prev = head->prev; 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project head->prev->next = item; 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project head->prev = item; 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid list_remove(struct listnode *item) 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project item->next->prev = item->prev; 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project item->prev->next = item->next; 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 215f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross#define MAX_MTD_PARTITIONS 16 216f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 217f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossstatic struct { 218f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char name[16]; 219f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int number; 220f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross} mtd_part_map[MAX_MTD_PARTITIONS]; 221f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 222f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossstatic int mtd_part_count = -1; 223f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 224f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossstatic void find_mtd_partitions(void) 225f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross{ 226f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int fd; 227f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char buf[1024]; 228f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char *pmtdbufp; 229f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross ssize_t pmtdsize; 230f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int r; 231f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 232f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross fd = open("/proc/mtd", O_RDONLY); 233f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (fd < 0) 234f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross return; 235f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 236f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross buf[sizeof(buf) - 1] = '\0'; 237f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdsize = read(fd, buf, sizeof(buf) - 1); 238f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdbufp = buf; 239f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross while (pmtdsize > 0) { 240f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int mtdnum, mtdsize, mtderasesize; 241f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char mtdname[16]; 242f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtdname[0] = '\0'; 243f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtdnum = -1; 244f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross r = sscanf(pmtdbufp, "mtd%d: %x %x %15s", 245f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross &mtdnum, &mtdsize, &mtderasesize, mtdname); 246f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if ((r == 4) && (mtdname[0] == '"')) { 247f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char *x = strchr(mtdname + 1, '"'); 248f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (x) { 249f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross *x = 0; 250f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 251f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross INFO("mtd partition %d, %s\n", mtdnum, mtdname + 1); 252f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (mtd_part_count < MAX_MTD_PARTITIONS) { 253f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross strcpy(mtd_part_map[mtd_part_count].name, mtdname + 1); 254f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtd_part_map[mtd_part_count].number = mtdnum; 255f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtd_part_count++; 256f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } else { 257f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross ERROR("too many mtd partitions\n"); 258f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 259f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 260f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross while (pmtdsize > 0 && *pmtdbufp != '\n') { 261f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdbufp++; 262f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdsize--; 263f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 264f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (pmtdsize > 0) { 265f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdbufp++; 266f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdsize--; 267f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 268f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 269f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross close(fd); 270f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross} 271f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 272f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossint mtd_name_to_number(const char *name) 273f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross{ 274f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int n; 275f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (mtd_part_count < 0) { 276f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtd_part_count = 0; 277f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross find_mtd_partitions(); 278f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 279f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross for (n = 0; n < mtd_part_count; n++) { 280f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (!strcmp(name, mtd_part_map[n].name)) { 281f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross return mtd_part_map[n].number; 282f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 283f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 284f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross return -1; 285f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross} 286504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross 287504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross/* 288504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross * gettime() - returns the time in seconds of the system's monotonic clock or 289504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross * zero on error. 290504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross */ 291504bc5175a8fe5a2f2552903afee761a86283cf4Colin Crosstime_t gettime(void) 292504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross{ 293504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross struct timespec ts; 294504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross int ret; 295504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross 296504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross ret = clock_gettime(CLOCK_MONOTONIC, &ts); 297504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross if (ret < 0) { 298504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross ERROR("clock_gettime(CLOCK_MONOTONIC) failed: %s\n", strerror(errno)); 299504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross return 0; 300504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross } 301504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross 302504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross return ts.tv_sec; 303504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross} 304b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 305b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossint mkdir_recursive(const char *pathname, mode_t mode) 306b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 307b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char buf[128]; 308b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *slash; 309b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *p = pathname; 310b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int width; 311b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int ret; 312b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross struct stat info; 313b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 314b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross while ((slash = strchr(p, '/')) != NULL) { 315b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width = slash - pathname; 316b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross p = slash + 1; 317b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width < 0) 318b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross break; 319b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width == 0) 320b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross continue; 321b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if ((unsigned int)width > sizeof(buf) - 1) { 322b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ERROR("path too long for mkdir_recursive\n"); 323b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return -1; 324b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 325b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross memcpy(buf, pathname, width); 326b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross buf[width] = 0; 327b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (stat(buf, &info) != 0) { 328b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = mkdir(buf, mode); 329b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret && errno != EEXIST) 330b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return ret; 331b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 332b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 333b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = mkdir(pathname, mode); 334b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret && errno != EEXIST) 335b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return ret; 336b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return 0; 337b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 338b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 339b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossvoid sanitize(char *s) 340b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 341b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!s) 342b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 343b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross while (isalnum(*s)) 344b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross s++; 345b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross *s = 0; 346b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 347b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossvoid make_link(const char *oldpath, const char *newpath) 348b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 349b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int ret; 350b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char buf[256]; 351b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *slash; 352b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int width; 353b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 354b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross slash = strrchr(newpath, '/'); 355b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!slash) 356b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 357b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width = slash - newpath; 358b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width <= 0 || width > (int)sizeof(buf) - 1) 359b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 360b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross memcpy(buf, newpath, width); 361b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross buf[width] = 0; 362b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = mkdir_recursive(buf, 0755); 363b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret) 364b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ERROR("Failed to create directory %s: %s (%d)\n", buf, strerror(errno), errno); 365b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 366b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = symlink(oldpath, newpath); 367b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret && errno != EEXIST) 368b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ERROR("Failed to symlink %s to %s: %s (%d)\n", oldpath, newpath, strerror(errno), errno); 369b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 370b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 371b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossvoid remove_link(const char *oldpath, const char *newpath) 372b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 373b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char path[256]; 374b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ssize_t ret; 375b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = readlink(newpath, path, sizeof(path) - 1); 376b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret <= 0) 377b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 378b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross path[ret] = 0; 379b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!strcmp(path, oldpath)) 380b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross unlink(newpath); 381b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 382cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross 383cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Crossint wait_for_file(const char *filename, int timeout) 384cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross{ 385cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross struct stat info; 386cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross time_t timeout_time = gettime() + timeout; 387cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross int ret = -1; 388cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross 389cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross while (gettime() < timeout_time && ((ret = stat(filename, &info)) < 0)) 390cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross usleep(10000); 391cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross 392cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross return ret; 393cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross} 394f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 395f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Crossvoid open_devnull_stdio(void) 396f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross{ 397f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross int fd; 398f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross static const char *name = "/dev/__null__"; 399f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (mknod(name, S_IFCHR | 0600, (1 << 8) | 3) == 0) { 400f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross fd = open(name, O_RDWR); 401f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross unlink(name); 402f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (fd >= 0) { 403f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross dup2(fd, 0); 404f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross dup2(fd, 1); 405f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross dup2(fd, 2); 406f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (fd > 2) { 407f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross close(fd); 408f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 409f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross return; 410f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 411f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 412f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 413f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross exit(1); 414f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross} 415f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 416f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Crossvoid get_hardware_name(char *hardware, unsigned int *revision) 417f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross{ 418f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross char data[1024]; 419f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross int fd, n; 420f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross char *x, *hw, *rev; 421f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 422f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross /* Hardware string was provided on kernel command line */ 423f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (hardware[0]) 424f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross return; 425f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 426f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross fd = open("/proc/cpuinfo", O_RDONLY); 427f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (fd < 0) return; 428f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 429f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross n = read(fd, data, 1023); 430f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross close(fd); 431f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (n < 0) return; 432f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 433f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross data[n] = 0; 434f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross hw = strstr(data, "\nHardware"); 435f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross rev = strstr(data, "\nRevision"); 436f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 437f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (hw) { 438f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x = strstr(hw, ": "); 439f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (x) { 440f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x += 2; 441f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross n = 0; 442f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross while (*x && !isspace(*x)) { 443f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross hardware[n++] = tolower(*x); 444f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x++; 445f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (n == 31) break; 446f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 447f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross hardware[n] = 0; 448f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 449f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 450f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 451f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (rev) { 452f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x = strstr(rev, ": "); 453f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (x) { 454f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross *revision = strtoul(x + 2, 0, 16); 455f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 456f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 457f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross} 458