Loop.cpp revision 092aa1c585fedd9e169eece41b8a471f1739908a
1a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat/* 2a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * Copyright (C) 2008 The Android Open Source Project 3a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * 4a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * Licensed under the Apache License, Version 2.0 (the "License"); 5a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * you may not use this file except in compliance with the License. 6a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * You may obtain a copy of the License at 7a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * 8a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * http://www.apache.org/licenses/LICENSE-2.0 9a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * 10a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * Unless required by applicable law or agreed to in writing, software 11a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * distributed under the License is distributed on an "AS IS" BASIS, 12a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * See the License for the specific language governing permissions and 14a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat * limitations under the License. 15a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat */ 16a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 17a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#include <stdio.h> 18a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#include <fcntl.h> 19a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#include <unistd.h> 20a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#include <errno.h> 21a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#include <string.h> 22a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 238da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat#include <sys/types.h> 248da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat#include <sys/stat.h> 258da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat 26d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat#include <linux/kdev_t.h> 27d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 28a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#define LOG_TAG "Vold" 29a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 30a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#include <cutils/log.h> 31a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 32d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat#include <sysutils/SocketClient.h> 33a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat#include "Loop.h" 34a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 35d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehatint Loop::dumpState(SocketClient *c) { 36d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat int i; 37d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat int fd; 38d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat char filename[256]; 39d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 40d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat for (i = 0; i < LOOP_MAX; i++) { 41508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root struct loop_info64 li; 42d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat int rc; 43d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 44d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat sprintf(filename, "/dev/block/loop%d", i); 45d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 46d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if ((fd = open(filename, O_RDWR)) < 0) { 47d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (errno != ENOENT) { 4897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Unable to open %s (%s)", filename, strerror(errno)); 49d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } else { 50d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat continue; 51d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 52d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat return -1; 53d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 54d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 55508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root rc = ioctl(fd, LOOP_GET_STATUS64, &li); 56d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat close(fd); 57d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (rc < 0 && errno == ENXIO) { 58d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat continue; 59d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 60d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 61d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (rc < 0) { 6297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Unable to get loop status for %s (%s)", filename, 63d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat strerror(errno)); 64d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat return -1; 65d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 66d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat char *tmp = NULL; 67508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root asprintf(&tmp, "%s %d %lld:%lld %llu %lld:%lld %lld 0x%x {%s} {%s}", filename, li.lo_number, 68d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat MAJOR(li.lo_device), MINOR(li.lo_device), li.lo_inode, MAJOR(li.lo_rdevice), 69508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root MINOR(li.lo_rdevice), li.lo_offset, li.lo_flags, li.lo_crypt_name, 70508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root li.lo_file_name); 71d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat c->sendMsg(0, tmp, false); 72d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat free(tmp); 73d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 74d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat return 0; 75d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat} 76d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 77d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehatint Loop::lookupActive(const char *id, char *buffer, size_t len) { 78a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int i; 79a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int fd; 80a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat char filename[256]; 81a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 82a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat memset(buffer, 0, len); 83a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 84a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat for (i = 0; i < LOOP_MAX; i++) { 85508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root struct loop_info64 li; 86a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int rc; 87a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 88a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat sprintf(filename, "/dev/block/loop%d", i); 89a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 90a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if ((fd = open(filename, O_RDWR)) < 0) { 91b78a32c1d5eeb243bdac0eaf18effb1897f1ee67San Mehat if (errno != ENOENT) { 9297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Unable to open %s (%s)", filename, strerror(errno)); 93d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } else { 94d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat continue; 95b78a32c1d5eeb243bdac0eaf18effb1897f1ee67San Mehat } 96a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 97a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 98a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 99508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root rc = ioctl(fd, LOOP_GET_STATUS64, &li); 100a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(fd); 101a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (rc < 0 && errno == ENXIO) { 102a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat continue; 103a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 104a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 105a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (rc < 0) { 10697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Unable to get loop status for %s (%s)", filename, 107a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat strerror(errno)); 108a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 109a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 110508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root if (!strncmp((const char*) li.lo_crypt_name, id, LO_NAME_SIZE)) { 111a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat break; 112a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 113a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 114a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 115a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (i == LOOP_MAX) { 116a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat errno = ENOENT; 117a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 118a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 119a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat strncpy(buffer, filename, len -1); 120a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return 0; 121a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat} 122a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 123d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehatint Loop::create(const char *id, const char *loopFile, char *loopDeviceBuffer, size_t len) { 124a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int i; 125a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int fd; 126a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat char filename[256]; 127a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 128a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat for (i = 0; i < LOOP_MAX; i++) { 129a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat struct loop_info li; 130a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int rc; 131a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 132a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat sprintf(filename, "/dev/block/loop%d", i); 133a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 1348da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat /* 1358da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat * The kernel starts us off with 8 loop nodes, but more 1368da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat * are created on-demand if needed. 1378da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat */ 1388da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat mode_t mode = 0660 | S_IFBLK; 139b78a32c1d5eeb243bdac0eaf18effb1897f1ee67San Mehat unsigned int dev = (0xff & i) | ((i << 12) & 0xfff00000) | (7 << 8); 1408da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat if (mknod(filename, mode, dev) < 0) { 1418da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat if (errno != EEXIST) { 14297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Error creating loop device node (%s)", strerror(errno)); 1438da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat return -1; 1448da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat } 1458da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat } 1468da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat 147a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if ((fd = open(filename, O_RDWR)) < 0) { 14897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Unable to open %s (%s)", filename, strerror(errno)); 149a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 150a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 151a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 152e17e91f63b3cceb2ef670947fd7f9ff3c40ee1a7Kenny Root rc = ioctl(fd, LOOP_GET_STATUS, &li); 153a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (rc < 0 && errno == ENXIO) 154a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat break; 155a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 1568da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat close(fd); 1578da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat 158a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (rc < 0) { 15997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Unable to get loop status for %s (%s)", filename, 160a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat strerror(errno)); 161a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 162a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 163a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 164a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 165a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (i == LOOP_MAX) { 16697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Exhausted all loop devices"); 167a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat errno = ENOSPC; 168a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 169a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 170a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 1718da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat strncpy(loopDeviceBuffer, filename, len -1); 172a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 1738da6bcb006f4e4257cdd685e35e910a6334f6ceaSan Mehat int file_fd; 174a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 175a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if ((file_fd = open(loopFile, O_RDWR)) < 0) { 17697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Unable to open %s (%s)", loopFile, strerror(errno)); 177a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(fd); 178a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 179a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 180a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 181a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (ioctl(fd, LOOP_SET_FD, file_fd) < 0) { 18297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Error setting up loopback interface (%s)", strerror(errno)); 183a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(file_fd); 184a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(fd); 185a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 186a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 187a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 188508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root struct loop_info64 li; 189a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 190a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat memset(&li, 0, sizeof(li)); 191092aa1c585fedd9e169eece41b8a471f1739908aPeter Bohm strlcpy((char*) li.lo_crypt_name, id, LO_NAME_SIZE); 192092aa1c585fedd9e169eece41b8a471f1739908aPeter Bohm strlcpy((char*) li.lo_file_name, loopFile, LO_NAME_SIZE); 193a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 194508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root if (ioctl(fd, LOOP_SET_STATUS64, &li) < 0) { 19597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Error setting loopback status (%s)", strerror(errno)); 196a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(file_fd); 197a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(fd); 198a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 199a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 200a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 201a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(fd); 202a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(file_fd); 203a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 204a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return 0; 205a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat} 206a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 207a19b250bd273455933ca3502cf2c2e0a803aff77San Mehatint Loop::destroyByDevice(const char *loopDevice) { 208a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int device_fd; 209a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 210a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat device_fd = open(loopDevice, O_RDONLY); 211a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (device_fd < 0) { 21297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to open loop (%d)", errno); 213a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 214a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 215a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 216a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if (ioctl(device_fd, LOOP_CLR_FD, 0) < 0) { 21797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to destroy loop (%d)", errno); 218a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(device_fd); 219a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 220a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 221a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 222a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(device_fd); 223a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return 0; 224a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat} 225a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 226a19b250bd273455933ca3502cf2c2e0a803aff77San Mehatint Loop::destroyByFile(const char *loopFile) { 227a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat errno = ENOSYS; 228a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 229a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat} 230a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 2318b8f71b1d760411279f3b07a5c97709f052c689eSan Mehatint Loop::createImageFile(const char *file, unsigned int numSectors) { 232a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat int fd; 233a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 234a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat if ((fd = creat(file, 0600)) < 0) { 23597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Error creating imagefile (%s)", strerror(errno)); 236a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 237a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 238a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat 2398b8f71b1d760411279f3b07a5c97709f052c689eSan Mehat if (ftruncate(fd, numSectors * 512) < 0) { 24097ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Error truncating imagefile (%s)", strerror(errno)); 241a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(fd); 242a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return -1; 243a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat } 244a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat close(fd); 245a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat return 0; 246a19b250bd273455933ca3502cf2c2e0a803aff77San Mehat} 247