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#include <u.h>
#include <libc.h>
#include <auth.h>
#include <fcall.h>
#include <thread.h>
#include <9p.h>
#include "flashfs.h"
static void
usage(void)
{
fprint(2, "usage: %s [-n nsect] [-z sectsize] file\n", argv0);
exits("usage");
}
static ulong
argval(char *arg)
{
long v;
char *extra;
if(arg == nil)
usage();
v = strtol(arg, &extra, 0);
if(*extra || v <= 0)
usage();
return v;
}
void
main(int argc, char **argv)
{
ulong i;
int m, n;
char *file;
uchar hdr[MAXHDR];
ARGBEGIN {
case 'n':
nsects = argval(ARGF());
break;
case 'z':
sectsize = argval(ARGF());
break;
default:
usage();
} ARGEND
if(argc != 1)
usage();
file = argv[0];
sectbuff = emalloc9p(sectsize);
initdata(file, 1);
memmove(hdr, magic, MAGSIZE);
m = putc3(&hdr[MAGSIZE], 0);
n = putc3(&hdr[MAGSIZE + m], 0);
clearsect(0);
writedata(0, 0, hdr, MAGSIZE + m + n, 0);
for(i = 1; i < nsects - 1; i++)
clearsect(i);
m = putc3(&hdr[MAGSIZE], 1);
n = putc3(&hdr[MAGSIZE + m], 0);
clearsect(nsects - 1);
writedata(0, nsects - 1, hdr, MAGSIZE + m + n, 0);
}
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