common.c

   1 /*
   2  *      The PCI Utilities -- Common Functions
   3  *
   4  *      Copyright (c) 1997--2003 Martin Mares <mj@ucw.cz>
   5  *
   6  *      Can be freely distributed and used under the terms of the GNU GPL.
   7  */
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include <stdarg.h>
  13 #include <unistd.h>
  14
  15 #include "pciutils.h"
  16
  17 void NONRET
  18 die(char *msg, ...)
  19 {
  20   va_list args;
  21
  22   va_start(args, msg);
  23   fputs("lspci: ", stderr);
  24   vfprintf(stderr, msg, args);
  25   fputc('\n', stderr);
  26   exit(1);
  27 }
  28
  29 void *
  30 xmalloc(unsigned int howmuch)
  31 {
  32   void *p = malloc(howmuch);
  33   if (!p)
  34     die("Unable to allocate %d bytes of memory", howmuch);
  35   return p;
  36 }
  37
  38 void *
  39 xrealloc(void *ptr, unsigned int howmuch)
  40 {
  41   void *p = realloc(ptr, howmuch);
  42   if (!p)
  43     die("Unable to allocate %d bytes of memory", howmuch);
  44   return p;
  45 }
  46
  47 int
  48 parse_generic_option(int i, struct pci_access *pacc, char *optarg)
  49 {
  50   switch (i)
  51     {
  52 #ifdef PCI_HAVE_PM_LINUX_PROC
  53     case 'P':
  54       pacc->method_params[PCI_ACCESS_PROC_BUS_PCI] = optarg;
  55       pacc->method = PCI_ACCESS_PROC_BUS_PCI;
  56       break;
  57 #endif
  58 #ifdef PCI_HAVE_PM_INTEL_CONF
  59     case 'H':
  60       if (!strcmp(optarg, "1"))
  61         pacc->method = PCI_ACCESS_I386_TYPE1;
  62       else if (!strcmp(optarg, "2"))
  63         pacc->method = PCI_ACCESS_I386_TYPE2;
  64       else
  65         die("Unknown hardware configuration type %s", optarg);
  66       break;
  67 #endif
  68 #ifdef PCI_HAVE_PM_DUMP
  69     case 'F':
  70       pacc->method_params[PCI_ACCESS_DUMP] = optarg;
  71       pacc->method = PCI_ACCESS_DUMP;
  72       break;
  73 #endif
  74     case 'G':
  75       pacc->debugging++;
  76       break;
  77     default:
  78       return 0;
  79     }
  80   return 1;
  81 }