Fix advanced EQ menu
[maemo-rb.git] / rbutil / sansapatcher / sansaio-posix.c
blob44c4dcc95c647fefc7641e30accd9255346ae9d3
1 /***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
10 * Copyright (C) 2006-2007 Dave Chapman
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
20 ****************************************************************************/
22 #if !defined(_WIN32) /* all non-Windows platforms supported are POSIX. */
23 #include <stdio.h>
24 #include <unistd.h>
25 #include <fcntl.h>
26 #include <string.h>
27 #include <stdlib.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #include <sys/ioctl.h>
31 #include <errno.h>
33 #if defined(linux) || defined (__linux)
34 #include <sys/mount.h>
35 #define SANSA_SECTORSIZE_IOCTL BLKSSZGET
36 #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) \
37 || defined(__bsdi__) || defined(__DragonFly__)
38 #include <sys/disk.h>
39 #define SANSA_SECTORSIZE_IOCTL DIOCGSECTORSIZE
40 #elif defined(__APPLE__) && defined(__MACH__)
41 #include <sys/disk.h>
42 #define SANSA_SECTORSIZE_IOCTL DKIOCGETBLOCKSIZE
43 #else
44 #error No sector-size detection implemented for this platform
45 #endif
47 #include "sansaio.h"
49 #if defined(__APPLE__) && defined(__MACH__)
50 static int sansa_unmount(struct sansa_t* sansa)
52 char cmd[4096];
53 int res;
55 sprintf(cmd, "/usr/sbin/diskutil unmount \"%ss1\"",sansa->diskname);
56 fprintf(stderr,"[INFO] ");
57 res = system(cmd);
59 if (res==0) {
60 return 0;
61 } else {
62 perror("Unmount failed");
63 return -1;
66 #endif
69 void sansa_print_error(char* msg)
71 perror(msg);
74 int sansa_open(struct sansa_t* sansa, int silent)
76 sansa->dh=open(sansa->diskname,O_RDONLY);
77 if (sansa->dh < 0) {
78 if (!silent) perror(sansa->diskname);
79 if(errno == EACCES) return -2;
80 else return -1;
83 if(ioctl(sansa->dh,SANSA_SECTORSIZE_IOCTL,&sansa->sector_size) < 0) {
84 sansa->sector_size=512;
85 if (!silent) {
86 fprintf(stderr,"[ERR] ioctl() call to get sector size failed, defaulting to %d\n"
87 ,sansa->sector_size);
90 return 0;
94 int sansa_reopen_rw(struct sansa_t* sansa)
96 #if defined(__APPLE__) && defined(__MACH__)
97 if (sansa_unmount(sansa) < 0)
98 return -1;
99 #endif
101 close(sansa->dh);
102 sansa->dh=open(sansa->diskname,O_RDWR);
103 if (sansa->dh < 0) {
104 perror(sansa->diskname);
105 return -1;
107 return 0;
110 int sansa_close(struct sansa_t* sansa)
112 close(sansa->dh);
113 return 0;
116 int sansa_alloc_buffer(struct sansa_t *sansa, int bufsize)
118 sansa->sectorbuf=malloc(bufsize);
119 if (sansa->sectorbuf == NULL) {
120 return -1;
122 return 0;
125 int sansa_dealloc_buffer(struct sansa_t* sansa)
127 if (sansa->sectorbuf == NULL) {
128 return -1;
130 free(sansa->sectorbuf);
131 sansa->sectorbuf = NULL;
132 return 0;
135 int sansa_seek(struct sansa_t* sansa, loff_t pos)
137 off_t res;
139 res = lseek64(sansa->dh, pos, SEEK_SET);
141 if (res == -1) {
142 return -1;
144 return 0;
147 int sansa_read(struct sansa_t* sansa, unsigned char* buf, int nbytes)
149 return read(sansa->dh, buf, nbytes);
152 int sansa_write(struct sansa_t* sansa, int nbytes)
154 return write(sansa->dh, sansa->sectorbuf, nbytes);
156 #endif