freebsd-dev/usr.sbin/kernbb/kernbb.c

94 lines
1.9 KiB
C

/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <err.h>
#include <fcntl.h>
#include <kvm.h>
#include <nlist.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
struct bb {
u_long zero_one;
u_long filename;
u_long counts;
u_long ncounts;
u_long next;
u_long addr;
u_long nwords;
u_long func;
u_long lineno;
u_long file;
};
struct nlist namelist[] = {
{ "bbhead", 0, 0, 0, 0 },
{ NULL, 0, 0, 0, 0 }
};
kvm_t *kv;
int
main(int argc __unused, char **argv __unused)
{
int i;
u_long l1,l2,l4;
struct bb bb;
char buf[BUFSIZ], *p;
FILE *f;
kv = kvm_open(NULL,NULL,NULL,O_RDWR,"dnc");
if (!kv)
err(1,"kvm_open");
i = kvm_nlist(kv,namelist);
if (i)
err(1,"kvm_nlist");
l1 = namelist[0].n_value;
kvm_read(kv,l1,&l2,sizeof l2);
while(l2) {
l1 += sizeof l1;
kvm_read(kv,l2,&bb,sizeof bb);
l2 = bb.next;
kvm_read(kv, bb.filename, buf, sizeof(buf));
p = buf;
f = fopen(p, "w");
if (f != NULL) {
printf("Writing \"%s\"\n", p);
} else {
p = strrchr(buf, '/');
if (p == NULL)
p = buf;
else
p++;
printf("Writing \"%s\" (spec \"%s\")\n", p, buf);
f = fopen(p, "w");
}
if (f == NULL)
err(1,"%s", p);
fwrite(&bb.ncounts, 4, 1, f);
l4 = 0;
fwrite(&l4, 4, 1, f);
p = malloc(bb.ncounts * 8);
kvm_read(kv, bb.counts, p, bb.ncounts * 8);
fwrite(p, 8, bb.ncounts, f);
fclose(f);
free(p);
}
return 0;
}