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60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
static __attribute__((used)) char* rcsid = "$CVSHeader$";
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/*
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*
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* (c) 2004 Laurent Vivier <Laurent@lvivier.info>
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*
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include "libemile.h"
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#include "emile.h"
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#include "bootblock.h"
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int emile_first_set_param(int fd, unsigned short tune_mask, int drive_num,
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int second_offset, int second_size)
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{
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eBootBlock_t firstBlock;
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int ret;
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off_t location;
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location = lseek(fd, 0, SEEK_CUR);
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if (location == -1)
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return EEMILE_CANNOT_READ_FIRST;
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ret = read(fd, &firstBlock, sizeof(firstBlock));
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if (ret != sizeof(firstBlock))
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return EEMILE_CANNOT_READ_FIRST;
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if ( strncmp( (char*)firstBlock.boot_block_header.SysName+1,
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"Mac Bootloader", 14) == 0 )
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{
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if (tune_mask & EMILE_FIRST_TUNE_DRIVE)
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write_short((u_int16_t*)&firstBlock.second_param_block.ioVRefNum,
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drive_num);
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if (tune_mask & EMILE_FIRST_TUNE_OFFSET)
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write_long((u_int32_t*)&firstBlock.second_param_block.ioPosOffset,
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second_offset);
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if (tune_mask & EMILE_FIRST_TUNE_SIZE)
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write_long(&firstBlock.second_param_block.ioReqCount,
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second_size);
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ret = lseek(fd, location, SEEK_SET);
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if (ret != 0)
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return EEMILE_CANNOT_WRITE_FIRST;
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ret = write(fd, &firstBlock, sizeof(firstBlock));
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if (ret != sizeof(firstBlock))
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return EEMILE_CANNOT_WRITE_FIRST;
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}
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else
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return EEMILE_UNKNOWN_FIRST;
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return 0;
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}
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