util.c revision b5982bf7c65b30be981ecfe1847437b05e32b2bb
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 26e46f9d510db9351682cf17c49115110870147335Stephen Smalley#include <selinux/label.h> 27e46f9d510db9351682cf17c49115110870147335Stephen Smalley 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/stat.h> 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/socket.h> 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/un.h> 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* for ANDROID_SOCKET_* */ 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/sockets.h> 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <private/android_filesystem_config.h> 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 38e46f9d510db9351682cf17c49115110870147335Stephen Smalley#include "init.h" 39ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#include "log.h" 40f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross#include "util.h" 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * android_name_to_id - returns the integer uid/gid associated with the given 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * name, or -1U on error. 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic unsigned int android_name_to_id(const char *name) 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 48de7f1ad86f532e79ea2a9f77b0147406a9ad971bEdwin Vane const struct android_id_info *info = android_ids; 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int n; 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (n = 0; n < android_id_count; n++) { 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!strcmp(info[n].name, name)) 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return info[n].aid; 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1U; 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * decode_uid - decodes and returns the given string, which can be either the 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * numeric or name representation, into the integer uid or gid. Returns -1U on 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * error. 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectunsigned int decode_uid(const char *s) 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int v; 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!s || *s == '\0') 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1U; 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (isalpha(s[0])) 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return android_name_to_id(s); 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = 0; 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v = (unsigned int) strtoul(s, 0, 0); 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno) 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1U; 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return v; 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * create_socket - creates a Unix domain socket in ANDROID_SOCKET_DIR 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * ("/dev/socket") as dictated in init.rc. This socket is inherited by the 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * daemon. We communicate the file descriptor's value via the environment 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * variable ANDROID_SOCKET_ENV_PREFIX<name> ("ANDROID_SOCKET_foo"). 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint create_socket(const char *name, int type, mode_t perm, uid_t uid, gid_t gid) 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_un addr; 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, ret; 90e46f9d510db9351682cf17c49115110870147335Stephen Smalley char *secon; 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = socket(PF_UNIX, type, 0); 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) { 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Failed to open socket '%s': %s\n", name, strerror(errno)); 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&addr, 0 , sizeof(addr)); 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.sun_family = AF_UNIX; 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(addr.sun_path, sizeof(addr.sun_path), ANDROID_SOCKET_DIR"/%s", 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project name); 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ret = unlink(addr.sun_path); 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ret != 0 && errno != ENOENT) { 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Failed to unlink old socket '%s': %s\n", name, strerror(errno)); 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto out_close; 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 109e46f9d510db9351682cf17c49115110870147335Stephen Smalley secon = NULL; 110e46f9d510db9351682cf17c49115110870147335Stephen Smalley if (sehandle) { 111e46f9d510db9351682cf17c49115110870147335Stephen Smalley ret = selabel_lookup(sehandle, &secon, addr.sun_path, S_IFSOCK); 112e46f9d510db9351682cf17c49115110870147335Stephen Smalley if (ret == 0) 113e46f9d510db9351682cf17c49115110870147335Stephen Smalley setfscreatecon(secon); 114e46f9d510db9351682cf17c49115110870147335Stephen Smalley } 115e46f9d510db9351682cf17c49115110870147335Stephen Smalley 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ret = bind(fd, (struct sockaddr *) &addr, sizeof (addr)); 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ret) { 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Failed to bind socket '%s': %s\n", name, strerror(errno)); 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto out_unlink; 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 122e46f9d510db9351682cf17c49115110870147335Stephen Smalley setfscreatecon(NULL); 123e46f9d510db9351682cf17c49115110870147335Stephen Smalley freecon(secon); 124e46f9d510db9351682cf17c49115110870147335Stephen Smalley 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chown(addr.sun_path, uid, gid); 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chmod(addr.sun_path, perm); 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project INFO("Created socket '%s' with mode '%o', user '%d', group '%d'\n", 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.sun_path, perm, uid, gid); 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectout_unlink: 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unlink(addr.sun_path); 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectout_close: 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* reads a file, making sure it is terminated with \n \0 */ 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid *read_file(const char *fn, unsigned *_sz) 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *data; 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int sz; 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 14638f368c1b3bac76d342189b6412691a217421178Nick Kralevich struct stat sb; 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = 0; 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(fn, O_RDONLY); 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd < 0) return 0; 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 15238f368c1b3bac76d342189b6412691a217421178Nick Kralevich // for security reasons, disallow world-writable 15338f368c1b3bac76d342189b6412691a217421178Nick Kralevich // or group-writable files 15438f368c1b3bac76d342189b6412691a217421178Nick Kralevich if (fstat(fd, &sb) < 0) { 15538f368c1b3bac76d342189b6412691a217421178Nick Kralevich ERROR("fstat failed for '%s'\n", fn); 15638f368c1b3bac76d342189b6412691a217421178Nick Kralevich goto oops; 15738f368c1b3bac76d342189b6412691a217421178Nick Kralevich } 15838f368c1b3bac76d342189b6412691a217421178Nick Kralevich if ((sb.st_mode & (S_IWGRP | S_IWOTH)) != 0) { 15938f368c1b3bac76d342189b6412691a217421178Nick Kralevich ERROR("skipping insecure file '%s'\n", fn); 16038f368c1b3bac76d342189b6412691a217421178Nick Kralevich goto oops; 16138f368c1b3bac76d342189b6412691a217421178Nick Kralevich } 16238f368c1b3bac76d342189b6412691a217421178Nick Kralevich 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sz = lseek(fd, 0, SEEK_END); 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(sz < 0) goto oops; 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(lseek(fd, 0, SEEK_SET) != 0) goto oops; 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = (char*) malloc(sz + 2); 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(data == 0) goto oops; 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(read(fd, data, sz) != sz) goto oops; 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data[sz] = '\n'; 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data[sz+1] = 0; 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(_sz) *_sz = sz; 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return data; 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectoops: 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(data != 0) free(data); 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 184f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross#define MAX_MTD_PARTITIONS 16 185f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 186f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossstatic struct { 187f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char name[16]; 188f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int number; 189f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross} mtd_part_map[MAX_MTD_PARTITIONS]; 190f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 191f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossstatic int mtd_part_count = -1; 192f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 193f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossstatic void find_mtd_partitions(void) 194f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross{ 195f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int fd; 196f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char buf[1024]; 197f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char *pmtdbufp; 198f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross ssize_t pmtdsize; 199f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int r; 200f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 201f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross fd = open("/proc/mtd", O_RDONLY); 202f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (fd < 0) 203f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross return; 204f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 205f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross buf[sizeof(buf) - 1] = '\0'; 206f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdsize = read(fd, buf, sizeof(buf) - 1); 207f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdbufp = buf; 208f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross while (pmtdsize > 0) { 209f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int mtdnum, mtdsize, mtderasesize; 210f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char mtdname[16]; 211f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtdname[0] = '\0'; 212f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtdnum = -1; 213f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross r = sscanf(pmtdbufp, "mtd%d: %x %x %15s", 214f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross &mtdnum, &mtdsize, &mtderasesize, mtdname); 215f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if ((r == 4) && (mtdname[0] == '"')) { 216f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross char *x = strchr(mtdname + 1, '"'); 217f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (x) { 218f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross *x = 0; 219f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 220f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross INFO("mtd partition %d, %s\n", mtdnum, mtdname + 1); 221f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (mtd_part_count < MAX_MTD_PARTITIONS) { 222f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross strcpy(mtd_part_map[mtd_part_count].name, mtdname + 1); 223f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtd_part_map[mtd_part_count].number = mtdnum; 224f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtd_part_count++; 225f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } else { 226f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross ERROR("too many mtd partitions\n"); 227f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 228f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 229f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross while (pmtdsize > 0 && *pmtdbufp != '\n') { 230f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdbufp++; 231f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdsize--; 232f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 233f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (pmtdsize > 0) { 234f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdbufp++; 235f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross pmtdsize--; 236f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 237f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 238f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross close(fd); 239f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross} 240f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross 241f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Crossint mtd_name_to_number(const char *name) 242f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross{ 243f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross int n; 244f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (mtd_part_count < 0) { 245f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross mtd_part_count = 0; 246f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross find_mtd_partitions(); 247f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 248f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross for (n = 0; n < mtd_part_count; n++) { 249f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross if (!strcmp(name, mtd_part_map[n].name)) { 250f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross return mtd_part_map[n].number; 251f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 252f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross } 253f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross return -1; 254f24ed8ca0a13f1b97bd55d10f75a289bf9ccd98dColin Cross} 255504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross 256504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross/* 257504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross * gettime() - returns the time in seconds of the system's monotonic clock or 258504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross * zero on error. 259504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross */ 260504bc5175a8fe5a2f2552903afee761a86283cf4Colin Crosstime_t gettime(void) 261504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross{ 262504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross struct timespec ts; 263504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross int ret; 264504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross 265504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross ret = clock_gettime(CLOCK_MONOTONIC, &ts); 266504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross if (ret < 0) { 267504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross ERROR("clock_gettime(CLOCK_MONOTONIC) failed: %s\n", strerror(errno)); 268504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross return 0; 269504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross } 270504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross 271504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross return ts.tv_sec; 272504bc5175a8fe5a2f2552903afee761a86283cf4Colin Cross} 273b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 274b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossint mkdir_recursive(const char *pathname, mode_t mode) 275b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 276b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char buf[128]; 277b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *slash; 278b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *p = pathname; 279b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int width; 280b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int ret; 281b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross struct stat info; 282b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 283b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross while ((slash = strchr(p, '/')) != NULL) { 284b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width = slash - pathname; 285b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross p = slash + 1; 286b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width < 0) 287b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross break; 288b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width == 0) 289b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross continue; 290b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if ((unsigned int)width > sizeof(buf) - 1) { 291b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ERROR("path too long for mkdir_recursive\n"); 292b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return -1; 293b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 294b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross memcpy(buf, pathname, width); 295b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross buf[width] = 0; 296b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (stat(buf, &info) != 0) { 297e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley ret = make_dir(buf, mode); 298b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret && errno != EEXIST) 299b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return ret; 300b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 301b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 302e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley ret = make_dir(pathname, mode); 303b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret && errno != EEXIST) 304b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return ret; 305b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return 0; 306b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 307b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 308b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossvoid sanitize(char *s) 309b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 310b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!s) 311b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 312b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross while (isalnum(*s)) 313b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross s++; 314b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross *s = 0; 315b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 316b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossvoid make_link(const char *oldpath, const char *newpath) 317b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 318b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int ret; 319b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char buf[256]; 320b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *slash; 321b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int width; 322b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 323b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross slash = strrchr(newpath, '/'); 324b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!slash) 325b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 326b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width = slash - newpath; 327b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width <= 0 || width > (int)sizeof(buf) - 1) 328b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 329b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross memcpy(buf, newpath, width); 330b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross buf[width] = 0; 331b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = mkdir_recursive(buf, 0755); 332b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret) 333b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ERROR("Failed to create directory %s: %s (%d)\n", buf, strerror(errno), errno); 334b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 335b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = symlink(oldpath, newpath); 336b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret && errno != EEXIST) 337b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ERROR("Failed to symlink %s to %s: %s (%d)\n", oldpath, newpath, strerror(errno), errno); 338b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 339b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 340b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossvoid remove_link(const char *oldpath, const char *newpath) 341b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 342b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char path[256]; 343b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ssize_t ret; 344b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross ret = readlink(newpath, path, sizeof(path) - 1); 345b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (ret <= 0) 346b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return; 347b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross path[ret] = 0; 348b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!strcmp(path, oldpath)) 349b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross unlink(newpath); 350b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 351cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross 352cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Crossint wait_for_file(const char *filename, int timeout) 353cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross{ 354cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross struct stat info; 355cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross time_t timeout_time = gettime() + timeout; 356cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross int ret = -1; 357cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross 358cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross while (gettime() < timeout_time && ((ret = stat(filename, &info)) < 0)) 359cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross usleep(10000); 360cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross 361cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross return ret; 362cd0f173e2790ee068fd2a20bcfc6c20468e97e51Colin Cross} 363f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 364f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Crossvoid open_devnull_stdio(void) 365f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross{ 366f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross int fd; 367f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross static const char *name = "/dev/__null__"; 368f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (mknod(name, S_IFCHR | 0600, (1 << 8) | 3) == 0) { 369f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross fd = open(name, O_RDWR); 370f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross unlink(name); 371f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (fd >= 0) { 372f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross dup2(fd, 0); 373f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross dup2(fd, 1); 374f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross dup2(fd, 2); 375f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (fd > 2) { 376f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross close(fd); 377f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 378f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross return; 379f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 380f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 381f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 382f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross exit(1); 383f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross} 384f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 385f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Crossvoid get_hardware_name(char *hardware, unsigned int *revision) 386f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross{ 387f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross char data[1024]; 388f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross int fd, n; 389f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross char *x, *hw, *rev; 390f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 391f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross /* Hardware string was provided on kernel command line */ 392f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (hardware[0]) 393f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross return; 394f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 395f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross fd = open("/proc/cpuinfo", O_RDONLY); 396f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (fd < 0) return; 397f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 398f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross n = read(fd, data, 1023); 399f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross close(fd); 400f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (n < 0) return; 401f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 402f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross data[n] = 0; 403f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross hw = strstr(data, "\nHardware"); 404f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross rev = strstr(data, "\nRevision"); 405f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 406f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (hw) { 407f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x = strstr(hw, ": "); 408f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (x) { 409f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x += 2; 410f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross n = 0; 411742150c031756da1393bf4223b2468b17cb79326The Android Open Source Project while (*x && *x != '\n') { 412742150c031756da1393bf4223b2468b17cb79326The Android Open Source Project if (!isspace(*x)) 413742150c031756da1393bf4223b2468b17cb79326The Android Open Source Project hardware[n++] = tolower(*x); 414f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x++; 415f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (n == 31) break; 416f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 417f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross hardware[n] = 0; 418f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 419f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 420f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross 421f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (rev) { 422f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross x = strstr(rev, ": "); 423f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (x) { 424f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross *revision = strtoul(x + 2, 0, 16); 425f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 426f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 427f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross} 4282b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine 4292b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkinevoid import_kernel_cmdline(int in_qemu, 4302b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine void (*import_kernel_nv)(char *name, int in_qemu)) 4312b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine{ 4322b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine char cmdline[1024]; 4332b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine char *ptr; 4342b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine int fd; 4352b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine 4362b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine fd = open("/proc/cmdline", O_RDONLY); 4372b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine if (fd >= 0) { 4382b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine int n = read(fd, cmdline, 1023); 4392b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine if (n < 0) n = 0; 4402b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine 4412b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine /* get rid of trailing newline, it happens */ 4422b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine if (n > 0 && cmdline[n-1] == '\n') n--; 4432b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine 4442b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine cmdline[n] = 0; 4452b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine close(fd); 4462b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine } else { 4472b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine cmdline[0] = 0; 4482b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine } 4492b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine 4502b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine ptr = cmdline; 4512b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine while (ptr && *ptr) { 4522b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine char *x = strchr(ptr, ' '); 4532b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine if (x != 0) *x++ = 0; 4542b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine import_kernel_nv(ptr, in_qemu); 4552b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine ptr = x; 4562b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine } 4572b99543cef1b8b0aa8cca39544939910035117b0Vladimir Chtchetkine} 458e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 459e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalleyint make_dir(const char *path, mode_t mode) 460e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley{ 461e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley int rc; 462e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 463e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley char *secontext = NULL; 464e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 465e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley if (sehandle) { 466e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley selabel_lookup(sehandle, &secontext, path, mode); 467e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley setfscreatecon(secontext); 468e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley } 469e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 470e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley rc = mkdir(path, mode); 471e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 472e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley if (secontext) { 473e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley int save_errno = errno; 474e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley freecon(secontext); 475e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley setfscreatecon(NULL); 476e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley errno = save_errno; 477e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley } 478b5982bf7c65b30be981ecfe1847437b05e32b2bbKenny Root 479e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley return rc; 480e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley} 481e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 482e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalleyint restorecon(const char *pathname) 483e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley{ 484e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley char *secontext = NULL; 485e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley struct stat sb; 486e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley int i; 487e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 488e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley if (is_selinux_enabled() <= 0 || !sehandle) 489e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley return 0; 490e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley 491e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley if (lstat(pathname, &sb) < 0) 492e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley return -errno; 493e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley if (selabel_lookup(sehandle, &secontext, pathname, sb.st_mode) < 0) 494e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley return -errno; 495e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley if (lsetfilecon(pathname, secontext) < 0) { 496e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley freecon(secontext); 497e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley return -errno; 498e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley } 499e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley freecon(secontext); 500e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley return 0; 501e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalley} 502