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dcda1aeb2f
HardenedBSD/release/sysinstall/uc_scsi.c
Eric L. Hernes dcda1aeb2f fix an `off by one' accounting error. 
This fixes the sysinstall core-dump!
Submitted by:	HOSOBUCHI Noriyuki <hoso@buchi.tama.or.jp>
1997-02-20 03:22:30 +00:00

478 lines
13 KiB
C
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/***************************************************
* file: userconfig/uc_scsi.c
*
* Copyright (c) 1996 Eric L. Hernes (erich@rrnet.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <nlist.h>
#include <scsi/scsiconf.h>
#include "uc_main.h"
/* this stuff is hidden under an #ifdef KERNEL in scsiconf.h */
#define SCCONF_UNSPEC 255
#define SCCONF_ANY 254
struct scsi_ctlr_config {
int scbus;
char *driver;
int unit;
int bus;
};
struct scsi_device_config {
char *name; /* SCSI device name (sd, st, etc) */
int unit; /* desired device unit */
int cunit; /* Controller unit */
int target; /* SCSI ID (target) */
int lun; /* SCSI lun */
int flags; /* Flags from config */
};
/* module prototypes */
static void get_sl_info(struct kernel *kp, struct uc_scsi *spc,
struct scsi_link *sl);
void
get_scsi_info(struct kernel *kp){
int i, j, k;
if(kp->incore){
if (kp->nl[SCSI_BUSSES].n_value) {
u_int *es, *sba;
struct scsibus_data *sbd;
int nsbd, nscsibus, total;
struct uc_scsi *sp, *spc;
struct uc_scsibus *sbp, *sbpc;
struct scsi_link *s_l;
u_int *slp;
char *temp;
struct scsi_device *sdev;
u_int t;
char name[10];
sp=(struct uc_scsi*)malloc(sizeof(struct uc_scsi));
total=0;
sbp=(struct uc_scsibus*)malloc(sizeof(struct uc_scsibus));
nscsibus=0;
es=(u_int *)kv_to_u(kp, kv_dref_p(kp,kp->nl[SCSI_BUSSES].n_value),
sizeof(u_int)*2);
nsbd=es[0];
sba=(u_int *)kv_to_u(kp, es[1], sizeof(u_int)*nsbd);
free(es);
for(i=0;i<nsbd;i++){
if(sba[i]){
/* first grab the adapter info */
sbd=(struct scsibus_data *)kv_to_u(kp, sba[i],
sizeof(struct scsibus_data));
sbp=(struct uc_scsibus *)realloc(sbp, sizeof(struct uc_scsibus)*
(nscsibus+1));
sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
spc=sp+total;
s_l=(struct scsi_link*)kv_to_u(kp, (u_int)sbd->adapter_link,
sizeof(struct scsi_link));
get_sl_info(kp, spc, s_l);
free(s_l);
sbpc=sbp+nscsibus;
sbpc->bus_no=nscsibus;
nscsibus++;
sscanf(spc->device, "%[a-z]%d", name, &sbpc->unit);
asprintf(&sbpc->driver, "%s", name);
total++;
t=kv_dref_p(kp, (u_int)sbd->sc_link);
t=(u_int)sbd->sc_link;
for(j=0;j<8;j++) {
slp=(u_int *)kv_to_u(kp, t+(j*8*sizeof(u_int)), /* XXX */
(sizeof(u_int)*sbd->maxlun));
for(k=0;k<sbd->maxlun && slp[k]; k++){
struct scsi_link *slt;
sp=(struct uc_scsi*)realloc(sp,
(sizeof(struct uc_scsi)*(total+1)));
spc=sp+total;
slt=(struct scsi_link*)kv_to_u(kp, slp[k],
sizeof(struct scsi_link));
get_sl_info(kp, spc, slt);
free(slt);
spc->config=(struct scsi_device_config *)0;
total++;
}
free(slp);
}
free(sbd);
}
}
/* now stuff in the list of drivers configured in the system */
t=kv_dref_p(kp, kp->nl[SCSI_LIST].n_value);
while(t) {
sdev=(struct scsi_device*)kv_to_u(kp, t, sizeof(struct scsi_device));
sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
spc=sp+total;
total++;
temp=(char *)kv_to_u(kp, (u_int)sdev->name, 10);
asprintf(&spc->device, "%s*", temp);
free(temp);
asprintf(&spc->adapter, "any");
spc->target=SCCONF_ANY;
spc->lun=SCCONF_ANY;
temp=(char *)kv_to_u(kp, (u_int)sdev->desc, 20);
asprintf(&spc->desc, "%s", temp);
free(temp);
spc->config=(struct scsi_device_config *)0;
t=(u_int)sdev->next;
free(sdev);
}
/* slap on the terminators */
sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
spc=sp+total;
bzero(spc, sizeof(struct uc_scsi));
sbp=(struct uc_scsibus *)realloc(sbp, sizeof(struct uc_scsibus)*
(nscsibus+1));
sbpc=sbp+nscsibus;
bzero(sbpc, sizeof(struct uc_scsibus));
kp->scsi_devp=sp;
kp->scsibus_devp=sbp;
} else { /* no symbol, and incore, no scsi */
kp->scsi_devp=(struct uc_scsi *)0;
kp->scsibus_devp=(struct uc_scsibus *)0;
}
} else { /* on disk */
if (kp->nl[SCSI_CINIT].n_value || kp->nl[SCSI_DINIT].n_value ||
kp->nl[SCSI_TINIT].n_value) {
int total=0;
struct uc_scsi *sp, *spc;
struct scsi_ctlr_config *sctl_c;
struct scsi_device_config *sdev_c;
struct scsi_device *sdev;
struct uc_scsibus *uc_scbus, *uc_scbusc;
u_int t, ctrl_total;
char *temp;
u_int initp;
spc=sp=(struct uc_scsi*)malloc(sizeof(struct uc_scsi));
total=0;
ctrl_total=0;
uc_scbus = NULL; /* Just prevent unused warning */
/* static kernel, we'll first get the wired controllers/devices */
if((t=kp->nl[SCSI_CINIT].n_value)){
/* get controller info*/
sctl_c=(struct scsi_ctlr_config*)kv_to_u(kp, t, sizeof(struct scsi_ctlr_config));
uc_scbus=(struct uc_scsibus*)malloc(sizeof(struct uc_scsibus));
while(sctl_c->driver){
/* remember the bus info, for later */
uc_scbus=(struct uc_scsibus*)realloc(uc_scbus, sizeof(struct uc_scsibus)*(ctrl_total+1));
uc_scbusc=uc_scbus+ctrl_total;
uc_scbusc->bus_no=sctl_c->scbus;
temp=(char *)kv_to_u(kp, (u_int)sctl_c->driver, 20);
uc_scbusc->driver=temp;
uc_scbusc->unit=sctl_c->unit;
uc_scbusc->config=sctl_c;
sp=(struct uc_scsi*)realloc(sp,sizeof(struct uc_scsi)*(total+1));
spc=sp+total;
asprintf(&spc->device, "%s%d", temp, sctl_c->unit);
asprintf(&spc->adapter, "%s%d", temp, sctl_c->unit);
spc->target=0;
spc->lun=0;
spc->modified=0;
asprintf(&spc->desc, "%s", temp);
total++;
ctrl_total++;
sctl_c++;
}
}
if((t=kp->nl[SCSI_DINIT].n_value)){
/* get wired device info */
sdev_c=(struct scsi_device_config*)kv_to_u(kp, t, sizeof(struct scsi_device_config));
while(sdev_c->name){
sp=(struct uc_scsi*)realloc(sp, sizeof(struct uc_scsi)*(total+1));
spc=sp+total;
temp=(char*)kv_to_u(kp, (u_int)sdev_c->name, 10);
asprintf(&spc->device, "%s%d", temp, sdev_c->unit);
/* figure out controller */
if(sdev_c->cunit == SCCONF_ANY){
asprintf(&spc->adapter, "any");
} else {
if(ctrl_total){
for(i=0;i<ctrl_total;i++){
if(sdev_c->cunit==uc_scbus[i].bus_no){
asprintf(&spc->adapter, "%s%d",
uc_scbus[i].driver, uc_scbus[i].unit);
break;
}
}
if(i==ctrl_total) { /* made it through the whole list */
asprintf(&spc->adapter, "any?");
}
} else {
asprintf(&spc->adapter, "any?");
}
}
spc->target= sdev_c->target;
spc->lun= sdev_c->lun;
spc->desc=(char *)0; /* filled in later */
spc->config=sdev_c;
spc->modified=0;
sdev_c++;
total++;
}
}
kp->scsibus_devp=uc_scbus;
if((t=kp->nl[SCSI_TINIT].n_value)) {
/* WARNING: This is teetering on the brink of stupid.
this ugly little hack only works because the
<scsi driver>init routines are macro-generated,
so the offset of the device pointers will be
the same (hopefully).
*/
while((initp=kv_dref_p(kp,t))) {
u_int tadr;
u_int sl;
t+=4;
tadr=kv_dref_t(kp, initp+4); /* offset in *.text* */
sdev=(struct scsi_device*)kv_to_u(kp, tadr, sizeof(struct scsi_device));
sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
spc=sp+total;
total++;
temp=(char *)kv_to_u(kp, (u_int)sdev->name, 10);
asprintf(&spc->device, "%s*", temp);
asprintf(&spc->adapter, "any");
spc->target=SCCONF_ANY;
spc->lun=SCCONF_ANY;
spc->modified=0;
temp=(char *)kv_to_u(kp, (u_int)sdev->desc, 20);
asprintf(&spc->desc, "%s", temp);
/* now try to fill in any device descriptions from above */
sl=strlen(spc->device)-1;
for(i=0;i<(total-1);i++){ /* don't look at this device */
struct uc_scsi *usp;
usp=sp+i;
if(strncmp(usp->device, spc->device, sl)==0 && usp->desc==0) {
asprintf(&usp->desc, "%s", spc->desc);
}
}
}
if(total){
sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
spc=sp+total;
bzero(spc, sizeof(struct uc_scsi));
kp->scsi_devp=sp;
} else {
free(sp);
kp->scsi_devp=(struct uc_scsi *)0;
}
}
} else {
kp->scsi_devp=(struct uc_scsi *)0;
}
}
}
struct list *
get_scsi_devlist(struct kernel *kp){
struct list *dl;
struct uc_scsi *kdp;
dl=list_new();
for(kdp=kp->scsi_devp; kdp->device; kdp++){
list_append(dl, kdp->device);
}
return(dl);
}
struct list *
get_scsi_device(struct uc_scsi *sp){
struct list *list;
char *tmp;
list=list_new();
list_append(list, sp->device);
list_append(list, sp->adapter);
asprintf(&tmp, "%d", sp->target );
list_append(list, tmp);
free(tmp);
asprintf(&tmp, "%d", sp->lun );
list_append(list, tmp);
free(tmp);
list_append(list, sp->desc);
return(list);
}
/* given a scsi_link and a uc_scsi pointer, fill it in */
static void
get_sl_info(struct kernel *kp, struct uc_scsi *spc, struct scsi_link *sl){
struct scsi_adapter *sadp;
struct scsi_device *sdev;
char *temp;
sadp=(struct scsi_adapter*)kv_to_u(kp, (u_int)sl->adapter,
sizeof(struct scsi_adapter));
sdev=(struct scsi_device*)kv_to_u(kp, (u_int)sl->device,
sizeof(struct scsi_device));
temp=(char *)kv_to_u(kp, (u_int)sdev->name, 20);
asprintf(&spc->device, "%s%d", temp, sl->dev_unit);
free(temp);
temp=(char *)kv_to_u(kp, (u_int)sadp->name, 20);
asprintf(&spc->adapter, "%s%d", temp, sl->adapter_unit);
free(temp);
spc->target = sl->target;
spc->lun = sl->lun;
temp=(char *)kv_to_u(kp, (u_int)sdev->desc, 30);
asprintf(&spc->desc, "%s", temp);
free(temp);
}
int
scsi_setdev(struct kernel *kp, struct list *list){
int r=1, bus_valid=0;
struct uc_scsi *sp;
struct uc_scsibus *sbp;
char *t;
if(kp->scsi_devp)
for(sp=kp->scsi_devp;sp->device;sp++){
if(strcmp(list->av[0], sp->device)==0){
for(sbp=kp->scsibus_devp;sbp->driver; sbp++){
asprintf(&t, "%s%d", sbp->driver, sbp->unit);
if(strcmp(list->av[1], t)==0) {
bus_valid=1;
}
free(t);
}
if(bus_valid){
sp->modified=1;
free(sp->adapter);
asprintf(&sp->adapter, "%s", list->av[1]);
sp->target = strtol(list->av[2], (char **)NULL, 0);
sp->lun = strtol(list->av[3], (char **)NULL, 0);
r=0;
goto done;
} else {
r=2;
}
}
}
done:
return(r);
}
void
scsi_free(struct kernel *kp, int writeback){
struct uc_scsi *sp;
struct uc_scsibus *sbp;
char *t;
int scbus, i;
for(sp=kp->scsi_devp; sp->device; sp++){
if((!kp->incore) && sp->modified && writeback) {
/* save info */
/* I'm not sure this is necessary */
#if 0
sscanf(sp->device, "%[a-z]%d", name, &unit);
sp->config->unit= unit;
#endif
/* figger out the controller, which may have changed */
scbus=-1;
for(sbp=kp->scsibus_devp, i=0;sbp->driver; sbp++,i++){
asprintf(&t, "%s%d", sbp->driver, sbp->unit);
if(strcmp(sp->adapter, t)==0) {
scbus=i;
}
free(t);
}
/* if we fell through, don't change anything */
if(scbus!=-1){
sp->config->cunit= scbus;
}
sp->config->target= sp->target;
sp->config->lun= sp->lun;
/* sp->config->flags= ; XXX this should be here*/
}
free(sp->device);
free(sp->adapter);
free(sp->desc);
}
free(kp->scsi_devp);
kp->scsi_devp=(struct uc_scsi *)0;
/* now free the bus info */
if(kp->incore){
for(sbp=kp->scsibus_devp;sbp->driver; sbp++){
/* fprintf(stderr, "sbp: 0x%x free(0x%x)\n", sbp, sbp->driver);*/
free(sbp->driver);
}
}
if (kp->scsibus_devp)
free(kp->scsibus_devp);
kp->scsibus_devp=(struct uc_scsibus *)0;
}
/* end of userconfig/uc_scsi.c */
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