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#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
int main(int argc, char **argv)
{
struct stat sbuf;
char *devtype;
FILE *headerfile;
unsigned int header[4];
if (argc != 3) {
fprintf(stderr, "usage: %s NSLU2_kernel_file_name prepend_header_filename\nThis program builds a 16 byte header which can be prepended to a NSLU2 Kernel for reflashing\n", argv[0]);
exit (1);
}
if (stat(argv[1], &sbuf) < 0) {
fprintf(stderr, "%s: stat: %s\n", argv[1], strerror(errno));
exit (1);
}
/* printf ("File %s is %d bytes long\n", argv[1], sbuf.st_size); */
if ((headerfile=fopen(argv[2],"wb"))==NULL)
{
fprintf(stderr,"Error opening file\n");
exit (1);
}
if ((sbuf.st_size + 16) > 0x100000) {
fprintf(stderr,"Error Kernel + Header is > 1 MB\n");
exit (1);
}
header[0] = (unsigned int)sbuf.st_size + 16;
header[1] = 0;
header[2] = 0;
header[3] = 0;
if (!fwrite(&header, sizeof(unsigned int), 4, headerfile))
fprintf(stderr,"Error write to headerfile: %s\n", strerror(errno));
fclose(headerfile);
}
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