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EM06 header

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This commit is contained in:
Laurent Vivier 2005-11-27 23:45:18 +00:00
parent 63c0921975
commit a216e4a7c5
4 changed files with 90 additions and 8 deletions
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17
libemile/emile_floppy_create_image.c
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@ -130,10 +130,11 @@ static int aggregate(int fd, char* first_level, char* second_level, char* kernel
int emile_floppy_create_image(char* first_level, char* second_level,
char* kernel_image, char* ramdisk,
unsigned long buffer_size, char* image)
char* image)
{
int ret;
int fd;
char configuration[1024];
if (image == NULL)
return -1;
@ -183,12 +184,14 @@ int emile_floppy_create_image(char* first_level, char* second_level,
/* set second level info */
ret = emile_second_set_kernel(fd, kernel_image,
FIRST_LEVEL_SIZE +
emile_file_get_size(second_level),
ramdisk);
lseek(fd, FIRST_LEVEL_SIZE, SEEK_SET);
ret = emile_second_set_buffer_size(fd, buffer_size);
sprintf(configuration, "kernel block:(fd0)0x%lx\n",
FIRST_LEVEL_SIZE + emile_file_get_size(second_level));
sprintf(configuration + strlen(configuration), "initrd block:(fd0)0x%lx,0x%lx",
FIRST_LEVEL_SIZE +
emile_file_get_size(second_level) + emile_file_get_size(kernel_image),
emile_file_get_size(ramdisk));
ret = emile_second_set_configuration(fd, configuration);
close(fd);

35
libemile/emile_second_get_configuration.c Normal file
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@ -0,0 +1,35 @@
/*
*
* (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include "libemile.h"
#include "emile.h"
char* emile_second_get_configuration(int fd)
{
char *conf;
emile_l2_header_t header;
int ret;
int size;
ret = read(fd, &header, sizeof(header));
if (ret != sizeof(header))
return NULL;
size = read_short(&header.conf_size);
conf = (char*)malloc(size);
if (conf == NULL)
return NULL;
ret = read(fd, conf, size);
if (ret != size)
return NULL;
return conf;
}

42
libemile/emile_second_set_configuration.c Normal file
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@ -0,0 +1,42 @@
/*
*
* (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include "libemile.h"
#include "emile.h"
#include "bootblock.h"
int emile_second_set_configuration(int fd, char *configuration)
{
emile_l2_header_t header;
int ret;
int size;
int len;
if (configuration == NULL)
return EEMILE_CANNOT_READ_SECOND;
len = strlen (configuration) + 1; /* + 1 for ending 0 */
ret = read(fd, &header, sizeof(header));
if (ret != sizeof(header))
return EEMILE_CANNOT_READ_SECOND;
size = read_short(&header.conf_size);
if (len > size)
return EEMILE_CANNOT_READ_SECOND;
ret = write(fd, configuration, len);
if (ret != len)
return EEMILE_CANNOT_WRITE_SECOND;
return 0;
}

4
libemile/libemile.h
View File

@ -97,7 +97,7 @@ extern int emile_second_get_buffer_size(int fd, unsigned int *buffer_size);
extern int emile_second_set_kernel_scsi(int fd, char *kernel_name);
extern int emile_floppy_create_image(char* first_level, char* second_level,
char* kernel_image, char* ramdisk,
unsigned long buffer_size, char* image);
char* image);
extern int emile_scsi_create_container(int fd,
struct emile_container* container);
extern emile_map_t* emile_map_open(char* dev, int flags);
@ -144,4 +144,6 @@ extern int emile_map_set_bootinfo(emile_map_t *map, int bootstart, int bootsize,
extern int emile_map_set_driver_info(emile_map_t *map, int number, int block, int size, int type);
extern int emile_map_set_driver_number(emile_map_t *map, int number);
extern int emile_block0_write(emile_map_t *map);
extern char* emile_second_get_configuration(int fd);
extern int emile_second_set_configuration(int fd, char *configuration);
#endif