EMILE/libemile/emile_second_set_cmdline.c
2004-12-12 22:59:38 +00:00

47 lines
978 B
C

static __attribute__((used)) char* rcsid = "$CVSHeader$";
/*
*
* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include "libemile.h"
#include "emile.h"
#include "../second/head.h"
int emile_second_set_cmdline(int fd, char* cmdline)
{
emile_l2_header_t header;
off_t location;
int ret;
location = lseek(fd, 0, SEEK_CUR);
if (ret == -1)
return EEMILE_CANNOT_READ_SECOND;
ret = read(fd, &header, sizeof(header));
if (ret != sizeof(header))
return EEMILE_CANNOT_READ_SECOND;
if (!EMILE_COMPAT(EMILE_02_SIGNATURE, read_long(&header.signature)))
return EEMILE_INVALID_SECOND;
strncpy(header.command_line, cmdline, 256);
header.command_line[255] = 0;
ret = lseek(fd, location, SEEK_SET);
if (ret == -1)
return EEMILE_CANNOT_WRITE_SECOND;
ret = write(fd, &header, sizeof(header));
if (ret != sizeof(header))
return EEMILE_CANNOT_WRITE_SECOND;
return 0;
}