| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2006-2007 Dave Chapman |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| #include <errno.h> |
| |
| #include "ipodio.h" |
| |
| #if defined(linux) || defined (__linux) |
| #include <sys/mount.h> |
| #include <linux/hdreg.h> |
| #include <scsi/scsi_ioctl.h> |
| #include <scsi/sg.h> |
| |
| #define IPOD_SECTORSIZE_IOCTL BLKSSZGET |
| |
| static void get_geometry(struct ipod_t* ipod) |
| { |
| struct hd_geometry geometry; |
| |
| if (!ioctl(ipod->dh, HDIO_GETGEO, &geometry)) { |
| /* never use geometry.cylinders - it is truncated */ |
| ipod->num_heads = geometry.heads; |
| ipod->sectors_per_track = geometry.sectors; |
| } else { |
| ipod->num_heads = 0; |
| ipod->sectors_per_track = 0; |
| } |
| } |
| |
| /* Linux SCSI Inquiry code based on the documentation and example code from |
| http://www.ibm.com/developerworks/linux/library/l-scsi-api/index.html |
| */ |
| |
| int ipod_scsi_inquiry(struct ipod_t* ipod, int page_code, |
| unsigned char* buf, int bufsize) |
| { |
| unsigned char cdb[6]; |
| struct sg_io_hdr hdr; |
| unsigned char sense_buffer[255]; |
| |
| memset(&hdr, 0, sizeof(hdr)); |
| |
| hdr.interface_id = 'S'; /* this is the only choice we have! */ |
| hdr.flags = SG_FLAG_LUN_INHIBIT; /* this would put the LUN to 2nd byte of cdb*/ |
| |
| /* Set xfer data */ |
| hdr.dxferp = buf; |
| hdr.dxfer_len = bufsize; |
| |
| /* Set sense data */ |
| hdr.sbp = sense_buffer; |
| hdr.mx_sb_len = sizeof(sense_buffer); |
| |
| /* Set the cdb format */ |
| cdb[0] = 0x12; |
| cdb[1] = 1; /* Enable Vital Product Data (EVPD) */ |
| cdb[2] = page_code & 0xff; |
| cdb[3] = 0; |
| cdb[4] = 0xff; |
| cdb[5] = 0; /* For control filed, just use 0 */ |
| |
| hdr.dxfer_direction = SG_DXFER_FROM_DEV; |
| hdr.cmdp = cdb; |
| hdr.cmd_len = 6; |
| |
| int ret = ioctl(ipod->dh, SG_IO, &hdr); |
| |
| if (ret < 0) { |
| return -1; |
| } else { |
| return 0; |
| } |
| } |
| |
| #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) \ |
| || defined(__bsdi__) || defined(__DragonFly__) |
| #include <sys/disk.h> |
| #define IPOD_SECTORSIZE_IOCTL DIOCGSECTORSIZE |
| |
| /* TODO: Implement this function for BSD */ |
| static void get_geometry(struct ipod_t* ipod) |
| { |
| /* Are these universal for all ipods? */ |
| ipod->num_heads = 255; |
| ipod->sectors_per_track = 63; |
| } |
| |
| int ipod_scsi_inquiry(struct ipod_t* ipod, int page_code, |
| unsigned char* buf, int bufsize) |
| { |
| /* TODO: Implement for BSD */ |
| return -1; |
| } |
| |
| #elif defined(__APPLE__) && defined(__MACH__) |
| #include <sys/disk.h> |
| #define IPOD_SECTORSIZE_IOCTL DKIOCGETBLOCKSIZE |
| |
| /* TODO: Implement this function for Mac OS X */ |
| static void get_geometry(struct ipod_t* ipod) |
| { |
| /* Are these universal for all ipods? */ |
| ipod->num_heads = 255; |
| ipod->sectors_per_track = 63; |
| } |
| |
| int ipod_scsi_inquiry(struct ipod_t* ipod, int page_code, |
| unsigned char* buf, int bufsize) |
| { |
| /* TODO: Implement for OS X */ |
| return -1; |
| } |
| |
| #else |
| #error No sector-size detection implemented for this platform |
| #endif |
| |
| #if defined(__APPLE__) && defined(__MACH__) |
| static int ipod_unmount(struct ipod_t* ipod) |
| { |
| char cmd[4096]; |
| int res; |
| |
| sprintf(cmd, "/usr/sbin/diskutil unmount \"%ss2\"",ipod->diskname); |
| fprintf(stderr,"[INFO] "); |
| res = system(cmd); |
| |
| if (res==0) { |
| return 0; |
| } else { |
| perror("Unmount failed"); |
| return -1; |
| } |
| } |
| #endif |
| |
| void print_error(char* msg) |
| { |
| perror(msg); |
| } |
| |
| int ipod_open(struct ipod_t* ipod, int silent) |
| { |
| ipod->dh=open(ipod->diskname,O_RDONLY); |
| if (ipod->dh < 0) { |
| if (!silent) perror(ipod->diskname); |
| if(errno == EACCES) return -2; |
| else return -1; |
| } |
| |
| /* Read information about the disk */ |
| |
| if(ioctl(ipod->dh,IPOD_SECTORSIZE_IOCTL,&ipod->sector_size) < 0) { |
| ipod->sector_size=512; |
| if (!silent) { |
| fprintf(stderr,"[ERR] ioctl() call to get sector size failed, defaulting to %d\n" |
| ,ipod->sector_size); |
| } |
| } |
| |
| get_geometry(ipod); |
| |
| return 0; |
| } |
| |
| |
| int ipod_reopen_rw(struct ipod_t* ipod) |
| { |
| #if defined(__APPLE__) && defined(__MACH__) |
| if (ipod_unmount(ipod) < 0) |
| return -1; |
| #endif |
| |
| close(ipod->dh); |
| ipod->dh=open(ipod->diskname,O_RDWR); |
| if (ipod->dh < 0) { |
| perror(ipod->diskname); |
| return -1; |
| } |
| return 0; |
| } |
| |
| int ipod_close(struct ipod_t* ipod) |
| { |
| close(ipod->dh); |
| return 0; |
| } |
| |
| int ipod_alloc_buffer(unsigned char** sectorbuf, int bufsize) |
| { |
| *sectorbuf=malloc(bufsize); |
| if (*sectorbuf == NULL) { |
| return -1; |
| } |
| return 0; |
| } |
| |
| int ipod_seek(struct ipod_t* ipod, unsigned long pos) |
| { |
| off_t res; |
| |
| res = lseek(ipod->dh, pos, SEEK_SET); |
| |
| if (res == -1) { |
| return -1; |
| } |
| return 0; |
| } |
| |
| ssize_t ipod_read(struct ipod_t* ipod, unsigned char* buf, int nbytes) |
| { |
| return read(ipod->dh, buf, nbytes); |
| } |
| |
| ssize_t ipod_write(struct ipod_t* ipod, unsigned char* buf, int nbytes) |
| { |
| return write(ipod->dh, buf, nbytes); |
| } |
| |