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freebsd-dev/sbin/dset/dset.c
Poul-Henning Kamp d030d2d2ae Many places in the code NULL is used in integer context, where 
plain 0 should be used.  This happens to work because we #define
NULL to 0, but is stylistically wrong and can cause problems
for people trying to port bits of code to other environments.

PR:		2752
Submitted by:	Arne Henrik Juul <arnej@imf.unit.no>
1997-09-18 14:08:40 +00:00

432 lines
9.9 KiB
C
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/*
* Copyright (c) 1995 Ugen J.S.Antsilevich
*
* Redistribution and use in source forms, with and without modification,
* are permitted provided that this entire comment appears intact.
*
* Redistribution in binary form may occur without any restrictions.
* Obviously, it would be nice if you gave credit where credit is due
* but requiring it would be too onerous.
*
* This software is provided ``AS IS'' without any warranties of any kind.
*
* Device configuration to kernel image saving utility.
*/
#include <stdio.h>
#include <nlist.h>
#include <paths.h>
#include <unistd.h>
#include <fcntl.h>
#include <a.out.h>
#include <kvm.h>
#include <limits.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/param.h>
#include <machine/param.h>
#include "i386/isa/isa_device.h"
#include "i386/isa/pnp.h"
struct pnp_cinfo new_ov[MAX_PNP_LDN];
struct pnp_cinfo old_ov[MAX_PNP_LDN];
#define TRUE 1
#define FALSE 0
extern int errno;
struct nlist nl[] = {
#define N_TABTTY 0
{"_isa_devtab_tty"},
#define N_TABBIO 1
{"_isa_devtab_bio"},
#define N_TABNET 2
{"_isa_devtab_net"},
#define N_TABNULL 3
{"_isa_devtab_null"},
"",
};
#define N_TABLAST N_TABNULL
struct nlist nlk[] = {
{"_isa_devlist"},
"",
};
struct nlist nlaux[] = {
{"_num_eisa_slots"},
{""},
};
struct nlist nlpnp[] = {
{"_pnp_ldn_overrides"},
{""},
};
struct nlist nlconfig[] = {
{"config.o"},
{""},
};
int quiet = FALSE;
void
fatal(name, str)
char *name, *str;
{
if (quiet)
exit(1);
if (str)
fprintf(stderr, "%s : %s\n", name, str);
else
perror(name);
exit(1);
}
void
error(name, str)
char *name, *str;
{
if (quiet)
return;
if (str)
fprintf(stderr, "%s : %s\n", name, str);
else
perror(name);
}
void
usage(char *title)
{
fprintf(stderr, "usage: %s [-qtv]\n", title);
}
main(ac, av)
int ac;
char **av;
{
int f, res, s, i;
int modified,dev_found;
int sym;
u_long pos, entry, pos1, pos_t;
u_long flags;
struct isa_device buf, buf1;
struct isa_driver dbuf;
char nbuf[5];
struct stat fst;
struct exec es;
kvm_t *kd;
static char errb[_POSIX2_LINE_MAX];
const char *kernel = NULL;
extern char *optarg;
char ch;
int testonly = FALSE;
int verbose = FALSE;
while ((ch = getopt(ac, av, "qtv")) != -1)
switch (ch) {
case 'q':
quiet = TRUE;
break;
case 't':
testonly = TRUE;
/* In test mode we want to be verbose */
case 'v':
verbose = TRUE;
break;
case '?':
default:
usage(av[0]);
exit(1);
}
kernel = getbootfile();
if (verbose)
printf("Boot image: %s\n", kernel);
if (!(kd = kvm_open(NULL, NULL, NULL, O_RDONLY, errb)))
fatal("kvm_open", NULL);
if (kvm_nlist(kd, nlk) != 0)
fatal("kvm_nlist", NULL);
if (nlk[0].n_type == 0)
fatal("kvm_nlist", "bad symbol type");
if (nlist(kernel, nl) != 0)
fatal("nlist", NULL);
if (nl[0].n_type == 0)
fatal("nlist", "bad symbol type");
if (stat(kernel, &fst) < 0)
fatal("stat", NULL);
flags = fst.st_flags;
if (chflags(kernel, (u_long) 0) < 0)
fatal("chflags", NULL);
if ((f = open(kernel, O_RDWR)) <= 0)
fatal("open", NULL);
if (read(f, &es, sizeof(struct exec)) <= 0)
fatal("read header", NULL);
entry = es.a_entry;
for (sym = 0; sym <= N_TABLAST; sym++) {
if (verbose)
printf("\nTable: %s\n", nl[sym].n_name);
pos = nl[sym].n_value + getpagesize() - entry;
pos1 = nlk[0].n_value;
if (lseek(f, pos, SEEK_SET) != pos)
fatal("seek", NULL);
if (verbose)
printf("----------------------------------------------------\n");
do {
if ((res = read(f, (char *) &buf, sizeof(struct isa_device)))
<= 0)
fatal("read", NULL);
if (kvm_read(kd, pos1, &pos_t, sizeof(u_long)) < 0)
fatal("kvmread", NULL);
dev_found = 0;
while(pos_t!=0) {
if (kvm_read(kd, pos_t, &buf1, sizeof(struct isa_device)) < 0)
fatal("kvmread", NULL);
if (buf1.id_id != buf.id_id) {
pos_t = (u_long)(buf1.id_next);
continue;
} else
dev_found=1;
if (buf1.id_driver)
if (kvm_read(kd, (u_long) buf1.id_driver,
&dbuf, sizeof(struct isa_driver)) < 0) {
error("kvm_read", "no driver");
} else {
if (kvm_read(kd, (u_long) dbuf.name,
nbuf, sizeof(nbuf)) < 0) {
error("kvm_read", NULL);
} else {
nbuf[sizeof(nbuf) - 1] = 0;
if (verbose)
printf("Device: %s%d\n", nbuf, buf1.id_unit);
}
}
else
error("kvm_read", "no driver");
break;
};
if (!dev_found)
continue;
if (buf1.id_id != 0)
if (verbose)
printf(
"kernel: id=%u io=%X irq=%d drq=%d maddr=%X msize=%d flags=%X enabled=%X \n",
buf1.id_id, buf1.id_iobase, buf1.id_irq, buf1.id_drq,
buf1.id_maddr, buf1.id_msize, buf1.id_flags, buf1.id_enabled);
if (buf.id_id != 0)
if (verbose)
printf(
"file: id=%u io=%X irq=%d drq=%d maddr=%X msize=%d flags=%X enabled=%X \n",
buf.id_id, buf.id_iobase, buf.id_irq, buf.id_drq,
buf.id_maddr, buf.id_msize, buf.id_flags, buf.id_enabled);
/*
* OK,now we'd compare values and set'em from kernel.
*/
modified = FALSE;
if (buf.id_iobase != -1 && buf.id_iobase !=
buf1.id_iobase) {
if (verbose)
printf("Setting IO addr\n");
buf.id_iobase = buf1.id_iobase;
modified = TRUE;
}
if (buf.id_irq != (u_short)-1 && buf.id_irq != buf1.id_irq) {
if (verbose)
printf("Setting IRQ\n");
buf.id_irq = buf1.id_irq;
modified = TRUE;
}
if (buf.id_drq != -1 && buf.id_drq != buf1.id_drq) {
if (verbose)
printf("Setting DRQ\n");
buf.id_drq = buf1.id_drq;
modified = TRUE;
}
if (buf.id_maddr != (caddr_t)-1 && buf.id_maddr != buf1.id_maddr) {
if (verbose)
printf("Setting memory addres\n");
buf.id_maddr = buf1.id_maddr;
modified = TRUE;
}
if (buf.id_msize != buf1.id_msize) {
if (verbose)
printf("Setting msize\n");
buf.id_msize = buf1.id_msize;
modified = TRUE;
}
if (buf.id_flags != buf1.id_flags) {
if (verbose)
printf("Setting flags\n");
buf.id_flags = buf1.id_flags;
modified = TRUE;
}
if (buf.id_enabled != buf1.id_enabled) {
if (verbose)
printf("Setting device enable/disable\n");
buf.id_enabled = buf1.id_enabled;
modified = TRUE;
}
if (verbose)
printf("----------------------------------------------------\n");
if (modified && !testonly) {
res = lseek(f, -(off_t) sizeof(struct isa_device),
SEEK_CUR);
if (write(f, &buf, sizeof(struct isa_device)) <= 0)
fatal("write", NULL);
}
} while (buf.id_id != 0 && buf1.id_id != 0);
}
if (kvm_nlist(kd, nlaux) != 0) {
/* num_eisa_conf need not exist, only handle it if found */
if (verbose)
printf("num_eisa_slots not found, ignoring.\n");
} else {
if (nlaux[0].n_type == 0)
fatal("kvm_nlist", "bad symbol type");
pos1 = nlaux[0].n_value;
if (kvm_read(kd, pos1, &s, sizeof(int)) < 0)
fatal("kvmread", NULL);
if (nlist(kernel, nlaux) != 0)
fatal("nlist", NULL);
if (nlaux[0].n_type == 0)
fatal("nlist", "bad symbol type");
pos = nlaux[0].n_value + getpagesize() - entry;
if (lseek(f, pos, SEEK_SET) != pos)
fatal("seek", NULL);
if ((res = read(f, (char *) &i, sizeof(int)))
<= 0)
fatal("read", NULL);
if (i != s) {
if (verbose)
printf("\nChanging num_eisa_slots from %d to %d.\n",
i, s);
if (!testonly) {
res = lseek(f, -(off_t) sizeof(int),
SEEK_CUR);
if (write(f, &s, sizeof(int)) <= 0)
fatal("write", NULL);
}
}
}
if (kvm_nlist(kd, nlpnp) != 0) {
/* pnp_ldn_overrides need not exist, only handle it if found */
if (verbose)
printf("pnp_ldn_overrides not found, ignoring.\n");
} else {
if (nlpnp[0].n_type == 0)
fatal("kvm_nlist", "bad symbol type");
/* must handle it, read and write... */
pos1 = nlpnp[0].n_value ;
if (kvm_read(kd, pos1, &new_ov, sizeof(new_ov) ) < 0 )
fatal("kvmread", NULL);
if (nlist(kernel, nlpnp) != 0)
fatal("nlist", NULL);
if (nlpnp[0].n_type == 0)
fatal("nlist", "bad symbol type");
pos = nlpnp[0].n_value + getpagesize() - entry;
if (lseek(f, pos, SEEK_SET) != pos)
fatal("seek", NULL);
if ((res = read(f, (char *) &old_ov, sizeof(old_ov))) <= 0 )
fatal("read", NULL);
if (testonly || bcmp(&old_ov, &new_ov, sizeof(old_ov)) ) {
if (verbose) {
int i;
printf("CSN LDN conf en irq drq vendor_id. ....\n");
for (i=0; i < MAX_PNP_LDN ; i++) {
if (new_ov[i].csn>0 && new_ov[i].csn<255) {
int maxp, maxm;
for (maxp=7; maxp>=0 ; maxp--)
if (new_ov[i].port[maxp] !=0) break;
for (maxm=3; maxm>=0 ; maxm--)
if (new_ov[i].mem[maxm].base !=0) break;
printf("%3d %3d %-4s %c ",
new_ov[i].csn,
new_ov[i].ldn,
new_ov[i].override ? "OS":"BIOS",
new_ov[i].enable ? 'y':'n');
printf(new_ov[i].irq[0] == 0 ? " -":" %2d",
new_ov[i].irq[0]);
printf(new_ov[i].irq[1] == 0 ? " - ":"%-2d",
new_ov[i].irq[1]);
printf(new_ov[i].drq[0] == 4 ? " -":" %d",
new_ov[i].drq[0]);
printf(new_ov[i].drq[1] == 4 ? " -":" %d",
new_ov[i].drq[1]);
if (new_ov[i].vendor_id > 0)
printf(" 0x%08x", new_ov[i].vendor_id);
if (new_ov[i].flags > 0)
printf(" flags 0x%08x", new_ov[i].flags);
if (maxp >=0) {
int j;
printf(" port 0x%x", new_ov[i].port[0]);
for(j=1;j<=maxp;j++)
printf(" 0x%x", new_ov[i].port[j]);
}
if (maxm >=0) {
int j;
printf(" mem 0x%x", new_ov[i].mem[0].base);
for(j=1;j<=maxm;j++)
printf(" 0x%x", new_ov[i].mem[j].base);
}
printf("\n");
}
}
}
if (!testonly) {
res = lseek(f, -(off_t) sizeof(new_ov),
SEEK_CUR);
if (write(f,&new_ov, sizeof(new_ov)) <= 0)
fatal("write", NULL);
}
}
}
if (chflags(kernel, flags) < 0)
fatal("chflags restore", NULL);
kvm_close(kd);
close(f);
}
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