4a81291284
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12793 a1c6a512-1295-4272-9138-f99709370657
115 lines
2.9 KiB
C
115 lines
2.9 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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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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#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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#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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void 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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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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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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return 0;
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}
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int sansa_alloc_buffer(unsigned char** sectorbuf, int bufsize)
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{
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*sectorbuf=malloc(bufsize);
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if (*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_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, unsigned char* buf, int nbytes)
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{
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return write(sansa->dh, buf, nbytes);
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}
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