diff options
Diffstat (limited to 'emulator/mksdcard/src/source/mksdcard.c')
| -rw-r--r-- | emulator/mksdcard/src/source/mksdcard.c | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/emulator/mksdcard/src/source/mksdcard.c b/emulator/mksdcard/src/source/mksdcard.c deleted file mode 100644 index ca23e6375..000000000 --- a/emulator/mksdcard/src/source/mksdcard.c +++ /dev/null @@ -1,364 +0,0 @@ -/* mksdcard.c -** -** Copyright 2007, The Android Open Source Project -** -** Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in the -** documentation and/or other materials provided with the distribution. -** * Neither the name of Google Inc. nor the names of its contributors may -** be used to endorse or promote products derived from this software -** without specific prior written permission. -** -** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR -** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF -** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO -** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; -** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, -** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR -** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF -** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -/* a simple and portable program used to generate a blank FAT32 image file - * - * usage: mksdcard [-l label] <size> <filename> - */ - -#include <time.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <unistd.h> - -/* believe me, you *don't* want to change these constants !! */ -#define BYTES_PER_SECTOR 512 -#define RESERVED_SECTORS 32 -#define BACKUP_BOOT_SECTOR 6 -#define NUM_FATS 2 - -/* sectors_per_disk is encoded as a signed int */ -#define MAX_SECTORS_PER_DISK 0x7FFFFFFF -#define MAX_DISK_SIZE ((Wide)MAX_SECTORS_PER_DISK * BYTES_PER_SECTOR) - -typedef long long Wide; /* might be something else if you don't use GCC */ -typedef unsigned char Byte; -typedef Byte* Bytes; - -#define BYTE_(p,i) (((Bytes)(p))[(i)]) - -#define POKEB(p,v) BYTE_(p,0) = (Byte)(v) -#define POKES(p,v) ( BYTE_(p,0) = (Byte)(v), BYTE_(p,1) = (Byte)((v) >> 8) ) -#define POKEW(p,v) ( BYTE_(p,0) = (Byte)(v), BYTE_(p,1) = (Byte)((v) >> 8), BYTE_(p,2) = (Byte)((v) >> 16), BYTE_(p,3) = (Byte)((v) >> 24) ) - -static Byte s_boot_sector [ BYTES_PER_SECTOR ]; /* boot sector */ -static Byte s_fsinfo_sector [ BYTES_PER_SECTOR ]; /* FS Info sector */ -static Byte s_fat_head [ BYTES_PER_SECTOR ]; /* first FAT sector */ -// static Byte s_zero_sector [ BYTES_PER_SECTOR ]; /* empty sector */ - -// For handling Unicode paths -#ifdef _WIN32 - #define WIDE_CHAR wchar_t - #define ARGC wargc - #define ARGV wargv - #define STRINGPRINT "%S" -#else - #define WIDE_CHAR char - #define ARGC argc - #define ARGV argv - #define STRINGPRINT "%s" -#endif - -/* this is the date and time when creating the disk */ -static int -get_serial_id( void ) -{ - unsigned short lo, hi; - time_t now = time(NULL); - struct tm tm = gmtime( &now )[0]; - - lo = (unsigned short)(tm.tm_mday + ((tm.tm_mon+1) << 8) + (tm.tm_sec << 8)); - hi = (unsigned short)(tm.tm_min + (tm.tm_hour << 8) + (tm.tm_year + 1900)); - - return lo + (hi << 16); -} - -static int -get_sectors_per_cluster( Wide disk_size ) -{ - Wide disk_MB = disk_size/(1024*1024); - - if (disk_MB < 260) - return 1; - - if (disk_MB < 8192) - return 4; - - if (disk_MB < 16384) - return 8; - - if (disk_MB < 32768) - return 16; - - return 32; -} - -static int -get_sectors_per_fat( Wide disk_size, int sectors_per_cluster ) -{ - Wide divider; - - /* weird computation from MS - see fatgen103.doc for details */ - disk_size -= RESERVED_SECTORS * BYTES_PER_SECTOR; /* don't count 32 reserved sectors */ - disk_size /= BYTES_PER_SECTOR; /* disk size in sectors */ - divider = ((256 * sectors_per_cluster) + NUM_FATS) / 2; - - return (int)( (disk_size + (divider-1)) / divider ); -} - -static void -boot_sector_init( Bytes boot, Bytes info, Wide disk_size, const char* label ) -{ - int sectors_per_cluster = get_sectors_per_cluster(disk_size); - int sectors_per_fat = get_sectors_per_fat(disk_size, sectors_per_cluster); - int sectors_per_disk = (int)(disk_size / BYTES_PER_SECTOR); - int serial_id = get_serial_id(); - int free_count; - - if (label == NULL) - label = "SDCARD"; - - POKEB(boot, 0xeb); - POKEB(boot+1, 0x5a); - POKEB(boot+2, 0x90); - strcpy( (char*)boot + 3, "MSWIN4.1" ); - POKES( boot + 0x0b, BYTES_PER_SECTOR ); /* sector size */ - POKEB( boot + 0xd, sectors_per_cluster ); /* sectors per cluster */ - POKES( boot + 0xe, RESERVED_SECTORS ); /* reserved sectors before first FAT */ - POKEB( boot + 0x10, NUM_FATS ); /* number of FATs */ - POKES( boot + 0x11, 0 ); /* max root directory entries for FAT12/FAT16, 0 for FAT32 */ - POKES( boot + 0x13, 0 ); /* total sectors, 0 to use 32-bit value at offset 0x20 */ - POKEB( boot + 0x15, 0xF8 ); /* media descriptor, 0xF8 == hard disk */ - POKES( boot + 0x16, 0 ); /* Sectors per FAT for FAT12/16, 0 for FAT32 */ - POKES( boot + 0x18, 9 ); /* Sectors per track (whatever) */ - POKES( boot + 0x1a, 2 ); /* Number of heads (whatever) */ - POKEW( boot + 0x1c, 0 ); /* Hidden sectors */ - POKEW( boot + 0x20, sectors_per_disk ); /* Total sectors */ - - /* extension */ - POKEW( boot + 0x24, sectors_per_fat ); /* Sectors per FAT */ - POKES( boot + 0x28, 0 ); /* FAT flags */ - POKES( boot + 0x2a, 0 ); /* version */ - POKEW( boot + 0x2c, 2 ); /* cluster number of root directory start */ - POKES( boot + 0x30, 1 ); /* sector number of FS information sector */ - POKES( boot + 0x32, BACKUP_BOOT_SECTOR ); /* sector number of a copy of this boot sector */ - POKEB( boot + 0x40, 0x80 ); /* physical drive number */ - POKEB( boot + 0x42, 0x29 ); /* extended boot signature ?? */ - POKEW( boot + 0x43, serial_id ); /* serial ID */ - strncpy( (char*)boot + 0x47, label, 11 ); /* Volume Label */ - memcpy( boot + 0x52, "FAT32 ", 8 ); /* FAT system type, padded with 0x20 */ - - POKEB( boot + BYTES_PER_SECTOR-2, 0x55 ); /* boot sector signature */ - POKEB( boot + BYTES_PER_SECTOR-1, 0xAA ); - - /* FSInfo sector */ - free_count = sectors_per_disk - 32 - 2*sectors_per_fat; - - POKEW( info + 0, 0x41615252 ); - POKEW( info + 484, 0x61417272 ); - POKEW( info + 488, free_count ); /* number of free clusters */ - POKEW( info + 492, 3 ); /* next free clusters, 0-1 reserved, 2 is used for the root dir */ - POKEW( info + 508, 0xAA550000 ); -} - -static void -fat_init( Bytes fat ) -{ - POKEW( fat, 0x0ffffff8 ); /* reserve cluster 1, media id in low byte */ - POKEW( fat + 4, 0x0fffffff ); /* reserve cluster 2 */ - POKEW( fat + 8, 0x0fffffff ); /* end of clust chain for root dir */ -} - - -static int -write_sector( FILE* file, Bytes sector ) -{ - int result = fwrite( sector, 1, BYTES_PER_SECTOR, file ) != BYTES_PER_SECTOR; - if (result) { - fprintf(stderr, "Failed to write sector of %d bytes: %s\n", BYTES_PER_SECTOR, strerror(errno)); - } - return result; -} - -static int -write_empty( FILE* file, Wide count ) -{ - static Byte empty[256*1024]; - memset(empty, 0, sizeof(empty)); - - count *= BYTES_PER_SECTOR; - while (count > 0) { - int len = sizeof(empty); - if (len > count) - len = count; - if ( fwrite( empty, 1, len, file ) != (size_t)len ) { - fprintf(stderr, "Failed to write %d bytes: %s\n", len, strerror(errno)); - return 1; - } - - count -= len; - } - return 0; -} - -static void usage (void) -{ - fprintf(stderr, "mksdcard: create a blank FAT32 image to be used with the Android emulator\n" ); - fprintf(stderr, "usage: mksdcard [-l label] <size> <file>\n\n"); - fprintf(stderr, " if <size> is a simple integer, it specifies a size in bytes\n" ); - fprintf(stderr, " if <size> is an integer followed by 'K', it specifies a size in KiB\n" ); - fprintf(stderr, " if <size> is an integer followed by 'M', it specifies a size in MiB\n" ); - fprintf(stderr, " if <size> is an integer followed by 'G', it specifies a size in GiB\n" ); - fprintf(stderr, "\nMinimum size is 9M. The Android emulator cannot use smaller images.\n" ); - fprintf(stderr, "Maximum size is %lld bytes, %lldK, %lldM or %lldG\n", - MAX_DISK_SIZE, MAX_DISK_SIZE >> 10, MAX_DISK_SIZE >> 20, MAX_DISK_SIZE >> 30); - exit(1); -} - -int main( int argc, char** argv ) -{ - Wide disk_size; - int sectors_per_fat; - int sectors_per_disk; - WIDE_CHAR* end; - const WIDE_CHAR* label = NULL; - FILE* f = NULL; - -#ifdef _WIN32 - int wargc; - WIDE_CHAR** wargv; - WIDE_CHAR** unused_environment; - WIDE_CHAR** unused_startupinfo; - - __wgetmainargs(&wargc, &wargv, &unused_environment, 0, &unused_startupinfo); -#endif - - for ( ; ARGC > 1 && ARGV[1][0] == '-'; ARGC--, ARGV++ ) - { - WIDE_CHAR* arg = ARGV[1] + 1; - switch (arg[0]) { - case 'l': - if (arg[1] != 0) - arg += 2; - else { - ARGC--; - ARGV++; - if (ARGC <= 1) - usage(); - arg = ARGV[1]; - } - label = arg; - break; - - default: - usage(); - } - } - - if (ARGC != 3) - usage(); - -#ifdef _WIN32 - disk_size = wcstoll( ARGV[1], &end, 10 ); -#else - disk_size = strtoll( ARGV[1], &end, 10 ); -#endif - - if (disk_size <= 0 || errno == EINVAL || errno == ERANGE) { - fprintf(stderr, "Invalid argument size '" STRINGPRINT "'\n\n", ARGV[1]); - usage(); - } - - if (*end == 'K') - disk_size *= 1024; - else if (*end == 'M') - disk_size *= 1024*1024; - else if (*end == 'G') - disk_size *= 1024*1024*1024; - - if (disk_size < 9*1024*1024) { - fprintf(stderr, "Invalid argument: size '" STRINGPRINT "' is too small.\n\n", ARGV[1]); - usage(); - } else if (disk_size > MAX_DISK_SIZE) { - fprintf(stderr, "Invalid argument: size '" STRINGPRINT "' is too large.\n\n", ARGV[1]); - usage(); - } - - sectors_per_disk = disk_size / BYTES_PER_SECTOR; - sectors_per_fat = get_sectors_per_fat( disk_size, get_sectors_per_cluster( disk_size ) ); - - boot_sector_init( s_boot_sector, s_fsinfo_sector, disk_size, NULL ); - fat_init( s_fat_head ); - -#ifdef _WIN32 - f = _wfopen( ARGV[2], L"wb" ); -#else - f = fopen( ARGV[2], "wb" ); -#endif - if ( !f ) { - fprintf(stderr, "Could not create file '" STRINGPRINT "': %s\n", ARGV[2], strerror(errno)); - goto FailWrite; - } - - /* here's the layout: - * - * boot_sector - * fsinfo_sector - * empty - * backup boot sector - * backup fsinfo sector - * RESERVED_SECTORS - 4 empty sectors (if backup sectors), or RESERVED_SECTORS - 2 (if no backup) - * first fat - * second fat - * zero sectors - */ - - if ( write_sector( f, s_boot_sector ) ) goto FailWrite; - if ( write_sector( f, s_fsinfo_sector ) ) goto FailWrite; - if ( BACKUP_BOOT_SECTOR > 0 ) { - if ( write_empty( f, BACKUP_BOOT_SECTOR - 2 ) ) goto FailWrite; - if ( write_sector( f, s_boot_sector ) ) goto FailWrite; - if ( write_sector( f, s_fsinfo_sector ) ) goto FailWrite; - if ( write_empty( f, RESERVED_SECTORS - 2 - BACKUP_BOOT_SECTOR ) ) goto FailWrite; - } - else if ( write_empty( f, RESERVED_SECTORS - 2 ) ) goto FailWrite; - - if ( write_sector( f, s_fat_head ) ) goto FailWrite; - if ( write_empty( f, sectors_per_fat-1 ) ) goto FailWrite; - - if ( write_sector( f, s_fat_head ) ) goto FailWrite; - if ( write_empty( f, sectors_per_fat-1 ) ) goto FailWrite; - - if ( write_empty( f, sectors_per_disk - RESERVED_SECTORS - 2*sectors_per_fat ) ) goto FailWrite; - - fclose(f); - return 0; - -FailWrite: - if (f != NULL) { - fclose(f); -#ifdef _WIN32 - _wunlink( ARGV[2] ); -#else - unlink( ARGV[2] ); -#endif - fprintf(stderr, "File '" STRINGPRINT "' was not created.\n", ARGV[2]); - } - return 1; -} |