8a6ceff376
During bootloader installation sansapatcher disk access is accidentially set up twice. This is not a problem except on Windows, which will abort with a "permission denied" error. This is basically the same problem as for ipodpatcher bootloader install. Change-Id: I03220e17d0e00a15fff23c02aba7da93d4781964
158 lines
3.8 KiB
C
158 lines
3.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006-2007 Dave Chapman
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#if !defined(_WIN32) /* all non-Windows platforms supported are POSIX. */
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#if defined(linux) || defined (__linux)
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#include <sys/mount.h>
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#define SANSA_SECTORSIZE_IOCTL BLKSSZGET
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#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) \
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|| defined(__bsdi__) || defined(__DragonFly__)
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#include <sys/disk.h>
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#define SANSA_SECTORSIZE_IOCTL DIOCGSECTORSIZE
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#elif defined(__APPLE__) && defined(__MACH__)
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#include <sys/disk.h>
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#define SANSA_SECTORSIZE_IOCTL DKIOCGETBLOCKSIZE
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#else
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#error No sector-size detection implemented for this platform
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#endif
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#include "sansaio.h"
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#if defined(__APPLE__) && defined(__MACH__)
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static int sansa_unmount(struct sansa_t* sansa)
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{
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char cmd[4096];
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int res;
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sprintf(cmd, "/usr/sbin/diskutil unmount \"%ss1\"",sansa->diskname);
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fprintf(stderr,"[INFO] ");
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res = system(cmd);
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if (res==0) {
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return 0;
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} else {
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perror("Unmount failed");
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return -1;
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}
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}
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#endif
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void sansa_print_error(char* msg)
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{
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perror(msg);
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}
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int sansa_open(struct sansa_t* sansa, int silent)
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{
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sansa->dh=open(sansa->diskname,O_RDONLY);
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if (sansa->dh < 0) {
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if (!silent) perror(sansa->diskname);
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if(errno == EACCES) return -2;
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else return -1;
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}
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if(ioctl(sansa->dh,SANSA_SECTORSIZE_IOCTL,&sansa->sector_size) < 0) {
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sansa->sector_size=512;
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if (!silent) {
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fprintf(stderr,"[ERR] ioctl() call to get sector size failed, defaulting to %d\n"
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,sansa->sector_size);
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}
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}
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return 0;
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}
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int sansa_reopen_rw(struct sansa_t* sansa)
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{
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#if defined(__APPLE__) && defined(__MACH__)
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if (sansa_unmount(sansa) < 0)
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return -1;
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#endif
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close(sansa->dh);
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sansa->dh=open(sansa->diskname,O_RDWR);
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if (sansa->dh < 0) {
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perror(sansa->diskname);
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return -1;
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}
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return 0;
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}
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int sansa_close(struct sansa_t* sansa)
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{
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close(sansa->dh);
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sansa->dh = -1;
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return 0;
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}
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int sansa_alloc_buffer(struct sansa_t *sansa, int bufsize)
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{
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sansa->sectorbuf=malloc(bufsize);
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if (sansa->sectorbuf == NULL) {
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return -1;
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}
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return 0;
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}
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int sansa_dealloc_buffer(struct sansa_t* sansa)
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{
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if (sansa->sectorbuf == NULL) {
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return -1;
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}
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free(sansa->sectorbuf);
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sansa->sectorbuf = NULL;
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return 0;
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}
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int sansa_seek(struct sansa_t* sansa, loff_t pos)
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{
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off_t res;
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res = lseek64(sansa->dh, pos, SEEK_SET);
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if (res == -1) {
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return -1;
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}
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return 0;
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}
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int sansa_read(struct sansa_t* sansa, unsigned char* buf, int nbytes)
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{
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return read(sansa->dh, buf, nbytes);
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}
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int sansa_write(struct sansa_t* sansa, int nbytes)
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{
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return write(sansa->dh, sansa->sectorbuf, nbytes);
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}
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#endif
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