EMILE/tools/emile-install.c

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/*
*
* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include "emile.h"
#include "emile-first.h"
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#include "../second/head.h"
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static void usage(int argc, char** argv)
{
fprintf(stderr, "Usage: %s -f <first level> -s <second level> -i <kernel image> -r <ramdisk> -b <buffer size> <image>\n", argv[0]);
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fprintf(stderr, "\nbuild: \n%s\n", SIGNATURE);
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}
static unsigned long get_size(char* file)
{
struct stat result;
stat(file, &result);
return (result.st_size + SECTOR_SIZE - 1) / SECTOR_SIZE * SECTOR_SIZE;
}
static int second_tune(int fd, char* second_level, char *kernel_image, unsigned buffer_size, char* ramdisk)
{
emile_l2_header_t header;
int ret;
ret = lseek(fd, FIRST_LEVEL_SIZE, SEEK_SET);
if (ret == -1)
{
close(fd);
return 3;
}
ret = read(fd, &header, sizeof(header));
if (ret != sizeof(header))
{
close(fd);
return 7;
}
if (kernel_image != NULL)
{
write_long(&header.kernel_image_offset,
FIRST_LEVEL_SIZE + get_size(second_level));
write_long(&header.kernel_image_size,
get_size(kernel_image));
}
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write_long(&header.kernel_size, buffer_size);
if (ramdisk == NULL)
{
write_long(&header.ramdisk_offset, 0);
write_long(&header.ramdisk_size, 0);
}
else
{
write_long(&header.ramdisk_offset,
read_long(&header.kernel_image_offset) +
read_long(&header.kernel_image_size));
write_long(&header.ramdisk_size, get_size(ramdisk));
}
printf("Setting second level info: \n");
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printf("kernel offset %d, kernel size %d, buffer size %d\n",
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read_long(&header.kernel_image_offset),
read_long(&header.kernel_image_size),
read_long(&header.kernel_size));
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printf("ramdisk offset %d, ramdisk size %d\n",
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read_long(&header.ramdisk_offset),
read_long(&header.ramdisk_size));
ret = lseek(fd, FIRST_LEVEL_SIZE, SEEK_SET);
if (ret == -1)
{
close(fd);
return 3;
}
ret = write(fd, &header, sizeof(header));
if (ret != sizeof(header))
{
close(fd);
return 7;
}
return 0;
}
static int first_tune(int fd, char* second_level)
{
int ret;
eBootBlock_t firstBlock;
ret = lseek(fd, 0, SEEK_SET);
if (ret == -1)
return 9;
ret = read(fd, &firstBlock, sizeof(firstBlock));
if (ret != sizeof(firstBlock))
return 10;
/* drive number */
write_short(&firstBlock.second_param_block.ioVRefNum, 1);
/* second offset */
write_long(&firstBlock.second_param_block.ioPosOffset, FIRST_LEVEL_SIZE);
/* second size */
write_long(&firstBlock.second_param_block.ioReqCount, get_size(second_level));
printf(
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"Setting second level position to: drive %d, offset %d, size %d\n",
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read_short(&firstBlock.second_param_block.ioVRefNum),
read_long(&firstBlock.second_param_block.ioPosOffset),
read_long(&firstBlock.second_param_block.ioReqCount));
/* writing */
ret = lseek(fd, 0, SEEK_SET);
if (ret == -1)
return 11;
ret = write(fd, &firstBlock, sizeof(firstBlock));
if (ret != sizeof(firstBlock))
return 12;
return 0;
}
static int copy_file(int fd, char* file)
{
int source;
int size_read;
int size_written;
int total;
static char buffer[SECTOR_SIZE];
if (fd < 0)
return -1;
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source = open(file, O_RDONLY);
if (source < 0)
{
close(source);
return -1;
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}
printf("Copying %s: ", file);
total = 0;
for(;;)
{
size_read = read(source, buffer, SECTOR_SIZE);
if (size_read == SECTOR_SIZE)
{
size_written = write(fd, buffer, SECTOR_SIZE);
total += size_written;
if (size_written != SECTOR_SIZE)
{
close(source);
return -1;
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}
}
else
{
if (size_read == 0)
break;
memset(buffer + size_read, 0, SECTOR_SIZE - size_read);
size_written = write(fd, buffer, SECTOR_SIZE);
total += size_written;
if (size_written != SECTOR_SIZE)
{
close(source);
return -1;
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}
break;
}
}
printf("%d bytes\n", total);
close(source);
return total;
}
static int pad_image(int fd, int size)
{
static char buffer[SECTOR_SIZE];
int size_written;
int total;
if (fd < 0)
return -1;
if (size % SECTOR_SIZE) {
fprintf(stderr,
"WARNING: pad size is not a multiple of sector size\n");
}
memset(buffer, 0, SECTOR_SIZE);
total = 0;
while (size > 0) {
size_written = write(fd, buffer, SECTOR_SIZE);
total += size_written;
if (size_written != SECTOR_SIZE) {
return total;
}
size -= size_written;
}
return total;
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}
static int aggregate(int fd, char* first_level, char* second_level, char* kernel_image, char* ramdisk)
{
int ret;
int total;
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ret = copy_file(fd, first_level);
if (ret < 0)
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return 6;
total = ret;
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ret = copy_file(fd, second_level);
if (ret < 0)
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return 6;
total += ret;
if (kernel_image != NULL)
{
ret = copy_file(fd, kernel_image);
if (ret < 0)
return 6;
total += ret;
}
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if (ramdisk != NULL)
{
ret = copy_file(fd, ramdisk);
if (ret < 0)
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return 6;
total += ret;
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}
ret = pad_image(fd, 1474560 - total);
if (ret < 0)
return 6;
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return 0;
}
int create_image(char* first_level, char* second_level, char* kernel_image,
char* ramdisk, unsigned long buffer_size, char* image)
{
int ret;
int fd;
if (image == NULL)
{
fprintf(stderr, "Image file not defined\n");
return 2;
}
printf("Creating %s\n", image);
fd = open(image, O_RDWR|O_CREAT|O_TRUNC,
S_IRUSR| S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
if (fd == -1)
{
perror("Cannot open image file");
return 2;
}
/* aggregating files: first, second, kernel, ramdisk */
if (first_level == NULL)
{
fprintf(stderr, "first level file not defined\n");
close(fd);
return 3;
}
if (second_level == NULL)
{
fprintf(stderr, "second level file not defined\n");
close(fd);
return 4;
}
if (kernel_image == NULL)
{
fprintf(stderr, "WARNING: kernel image file not defined\n");
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}
ret = aggregate(fd, first_level, second_level, kernel_image, ramdisk);
if (ret != 0)
{
perror("Cannot create image\n");
close(fd);
return 6;
}
/* set first level info */
ret = first_tune(fd, second_level);
if (ret != 0)
{
close(fd);
return 7;
}
/* set second level info */
ret = second_tune(fd, second_level, kernel_image, buffer_size, ramdisk);
if (ret != 0)
{
close(fd);
return 8;
}
close(fd);
return 0;
}
int main(int argc, char** argv)
{
char* first_level = NULL;
char* second_level = NULL;
char* kernel_image = NULL;
char* ramdisk = NULL;
unsigned long buffer_size = 0;
char* image = NULL;
int i;
int ret;
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ASSERT_BBH(
{fprintf(stderr,"Internal Error: Bad BootBlkHdr size\n"); exit(1);});
ASSERT_PBR(
{fprintf(stderr,"Internal Error: Bad ParamBlockRec size\n"); exit(1);});
ASSERT_BB(
{fprintf(stderr,"Internal Error: Bad boot block size\n"); exit(1);});
if ((argc != 12) && (argc != 10) && (argc != 8) )
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{
usage(argc, argv);
return 1;
}
for (i = 1; i < argc; i++)
{
if (strcmp("-f", argv[i]) == 0)
{
if (first_level != NULL)
{
fprintf(stderr, "Duplicate definition of -f\n");
return 1;
}
i++;
if (i < argc)
first_level = argv[i];
else
{
fprintf(stderr, "Missing argument for -f\n");
return 1;
}
}
else if (strcmp("-s", argv[i]) == 0)
{
if (second_level != NULL)
{
fprintf(stderr, "Duplicate definition of -s\n");
return 1;
}
i++;
if (i < argc)
second_level = argv[i];
else
{
fprintf(stderr, "Missing argument for -s\n");
return 1;
}
}
else if (strcmp("-i", argv[i]) == 0)
{
if (kernel_image != NULL)
{
fprintf(stderr, "Duplicate definition of -i\n");
return 1;
}
i++;
if (i < argc)
kernel_image = argv[i];
else
{
fprintf(stderr, "Missing argument for -i\n");
return 1;
}
}
else if (strcmp("-b", argv[i]) == 0)
{
if (buffer_size != 0)
{
fprintf(stderr, "Duplicate definition of -b\n");
return 1;
}
i++;
if (i < argc)
buffer_size = atol(argv[i]);
else
{
fprintf(stderr, "Missing argument for -b\n");
return 1;
}
}
else if (strcmp("-r", argv[i]) == 0)
{
if (ramdisk != 0)
{
fprintf(stderr, "Duplicate definition of -r\n");
return 1;
}
i++;
if (i < argc)
ramdisk = argv[i];
else
{
fprintf(stderr, "Missing argument for -r\n");
return 1;
}
}
else
{
if (image != NULL)
{
fprintf(stderr, "Unknown parameter %s\n",
argv[i]);
usage(argc, argv);
return 1;
}
image = argv[i];
}
}
ret = create_image(first_level, second_level, kernel_image, ramdisk,
buffer_size, image);
return ret;
}