335 lines
8.0 KiB
C
335 lines
8.0 KiB
C
/***************************************************
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* file: userconfig/uc_main.c
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*
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* Copyright (c) 1996 Eric L. Hernes (erich@rrnet.com)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* library functions for userconfig library
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*
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* $Id: uc_main.c,v 1.23 1998/10/06 07:41:49 msmith Exp $
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*/
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <paths.h>
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#include <sys/mman.h>
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#include <nlist.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "uc_main.h"
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#include "sysinstall.h"
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static struct nlist _nl[] = {
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{"_isa_devtab_bio"},
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{"_isa_devtab_tty"},
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{"_isa_devtab_net"},
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{"_isa_devtab_cam"},
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{"_isa_devtab_null"},
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{"_isa_biotab_wdc"},
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{"_isa_biotab_fdc"},
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{"_eisadriver_set"},
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{"_eisa_dev_list"},
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{"_pcidevice_set"},
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{"_device_list"},
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#ifdef DO_SCSI
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{"_scbusses"},
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{"_scsi_cinit"},
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{"_scsi_dinit"},
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{"_scsi_tinit"},
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#endif
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{""},
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};
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struct kernel *
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uc_open(char *name){
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int kd, flags, incore;
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struct kernel *kern;
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struct stat sb;
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char kname[80];
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int size, i = 0;
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struct nlist *nl = _nl;
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if (strcmp(name, "-incore") == 0)
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incore = 1;
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else
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incore = 0;
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if (incore || (strcmp(name,"-bootfile") == 0))
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SAFE_STRCPY(kname, getbootfile());
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else
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SAFE_STRCPY(kname, name);
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if (isDebug())
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msgDebug("uc_open: kernel name is %s, incore = %d\n", kname, incore);
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kern = (struct kernel *)malloc(sizeof(struct kernel));
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#ifdef KERN_NO_SYMBOLS
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if (incore) {
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FILE *fp;
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fp = fopen("/stand/symbols", "r");
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if (!fp) {
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msgDebug("Couldn't open /stand/symbols file! Punting.\n");
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free(kern);
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return NULL;
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}
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if (fscanf(fp, "%d\n", &size) != 1) {
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msgDebug("Unable to get # of name list entries from symbol file.\n");
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free(kern);
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return NULL;
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}
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else if (isDebug())
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msgDebug("uc_open: opened /stand/symbols file, reading %d entries.\n", size);
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kern->nl = nl = (struct nlist *)malloc((size + 1) * sizeof(struct nlist));
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bzero(nl, (size + 1) * sizeof(struct nlist));
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for (i = 0; i <= size; i++) {
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char *cp, name[255];
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int c1;
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unsigned int uc1;
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short d1;
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unsigned long v1;
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if (fgets(name, 255, fp) == NULL) {
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msgDebug("Can't get name field for entry %d\n", i);
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free(kern);
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return NULL;
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}
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if ((cp = index(name, '\n')) != NULL)
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*cp = '\0';
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nl[i].n_name = strdup(name);
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if (fscanf(fp, "%u %d %hd %ld\n", &uc1, &c1, &d1, &v1) == 4) {
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nl[i].n_type = (unsigned char)uc1;
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nl[i].n_other = (char)c1;
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nl[i].n_desc = d1;
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nl[i].n_value = v1;
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if (isDebug())
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msgDebug("uc_open: for entry %d, decoded: \"%s\", %u %d %hd %ld\n", i, nl[i].n_name, nl[i].n_type, nl[i].n_other, nl[i].n_desc, nl[i].n_value);
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}
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}
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nl[i].n_name = "";
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fclose(fp);
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i = 0;
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}
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else
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#endif
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i = nlist(kname, nl);
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if (i == -1) {
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msgDebug("uc_open: kernel %s does not contain symbols.\n", kname);
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free(kern);
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return NULL;
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}
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#ifdef KERN_NO_SYMBOLS
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if (!incore) {
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#else
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{
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#endif
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kern->nl=(struct nlist *)malloc(sizeof(_nl));
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bcopy(_nl, kern->nl, sizeof(_nl));
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}
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if (incore) {
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if (isDebug())
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msgDebug("uc_open: attempting to open /dev/kmem for incore.\n");
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if ((kd = open("/dev/kmem", O_RDONLY)) < 0) {
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free(kern);
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msgDebug("uc_open: Unable to open /dev/kmem.\n");
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return NULL;
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}
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kern->core = (caddr_t)NULL;
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kern->incore = 1;
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kern->size = 0;
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}
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else {
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if (stat(kname, &sb) < 0) {
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free(kern);
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msgDebug("uc_open: Unable to stat %s.\n", kname);
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return NULL;
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}
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kern->size = sb.st_size;
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flags = sb.st_flags;
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if (chflags(kname, 0) < 0) {
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free(kern);
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msgDebug("uc_open: Unable to chflags %s.\n", kname);
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return NULL;
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}
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if (isDebug())
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msgDebug("uc_open: attempting to open %s\n", kname);
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if ((kd = open(kname, O_RDWR, 0644)) < 0) {
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free(kern);
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msgDebug("uc_open: Unable to open %s.\n", kname);
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return NULL;
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}
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fchflags(kd, flags);
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if (isDebug())
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msgDebug("uc_open: attempting to mmap %d bytes\n", sb.st_size);
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kern->core = mmap((caddr_t)0, sb.st_size, PROT_READ | PROT_WRITE,
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MAP_SHARED, kd, 0);
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kern->incore = 0;
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if (kern->core == MAP_FAILED) {
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free(kern);
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msgDebug("uc_open: Unable to mmap from %s.\n", kname);
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return NULL;
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}
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}
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kern->fd = kd;
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get_isa_info(kern);
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if (isDebug())
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msgDebug("uc_open: got isa information\n");
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get_pci_info(kern);
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if (isDebug())
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msgDebug("uc_open: got pci information\n");
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get_eisa_info(kern);
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if (isDebug())
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msgDebug("uc_open: got eisa information\n");
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#ifdef DO_SCSI
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get_scsi_info(kern);
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if (isDebug())
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msgDebug("uc_open: got scsi information\n");
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#else
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kern->scsi_devp=(struct uc_scsi*)NULL;
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kern->scsibus_devp=(struct uc_scsibus*)NULL;
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#endif
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return kern;
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}
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int
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uc_close(struct kernel *kern, int writeback)
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{
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if (kern->isa_devp)
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isa_free(kern, writeback);
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if (kern->eisa_devp)
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eisa_free(kern, writeback); /* `writeback' isn't really useful here */
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if (kern->pci_devp)
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pci_free(kern, writeback); /* or here */
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#ifdef DO_SCSI
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if (kern->scsi_devp)
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scsi_free(kern, writeback);
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#endif
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if (!kern->incore)
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munmap(kern->core, kern->size);
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close(kern->fd);
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free(kern->nl);
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free(kern);
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return 0;
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}
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struct list *
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uc_getdev(struct kernel *kern, char *dev)
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{
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struct list *list = (struct list *)0;
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if (*dev == '-') { /* asked for -isa, -eisa, -pci, -scsi, -all */
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if (strcmp(dev, "-all") == 0) {
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list = list_new();
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if (kern->isa_devp)
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list_append(list, "isa");
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if (kern->eisa_devp)
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list_append(list, "eisa");
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if (kern->pci_devp)
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list_append(list, "pci");
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#ifdef DO_SCSI
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if (kern->scsi_devp)
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list_append(list, "scsi");
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#endif
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}
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else if (strcmp(dev, "-isa") == 0)
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list = get_isa_devlist(kern);
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else if (strcmp(dev, "-eisa") == 0)
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list = get_eisa_devlist(kern);
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else if (strcmp(dev, "-pci") == 0)
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list = get_pci_devlist(kern);
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#ifdef DO_SCSI
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else if (strcmp(dev, "-scsi") == 0)
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list = get_scsi_devlist(kern);
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#endif
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}
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else {
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/* we gotta figure out which real device to report */
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struct uc_isa *ip;
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struct uc_pci *pp;
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struct uc_eisa *ep;
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if (kern->isa_devp) {
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for (ip = kern->isa_devp; ip->device; ip++) {
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if (strcmp(dev, ip->device) == 0) {
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list = get_isa_device(ip);
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goto end;
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}
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}
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}
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#ifdef DO_SCSI
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if (kern->scsi_devp) {
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struct uc_scsi *sp;
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for (sp = kern->scsi_devp; sp->device; sp++) {
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if (strcmp(dev, sp->device) == 0) {
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list = get_scsi_device(sp);
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goto end;
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}
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}
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}
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#endif
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if (kern->pci_devp) {
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for(pp = kern->pci_devp; pp->device; pp++) {
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if (strcmp(dev, pp->device) == 0) {
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list = get_pci_device(pp);
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goto end;
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}
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}
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}
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if (kern->eisa_devp) {
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for (ep = kern->eisa_devp; ep->device; ep++) {
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if (strcmp(dev, ep->device) == 0) {
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list = get_eisa_device(ep);
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goto end;
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}
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}
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}
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}
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end:
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return(list);
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}
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