contrib/bsdinstaller-1.1.6/src/lib/libdfui/system.c

   1 /*
   2  * system.c
   3  * System definitions and capabilities.
   4  * $Id: system.c,v 1.5 2004/11/14 02:45:51 cpressey Exp $
   5  */
   6
   7 #include <sys/param.h>
   8 #include <sys/sysctl.h>
   9
  10 #include <err.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <sysexits.h>
  14
  15 #include "dfui.h"
  16 #include "system.h"
  17
  18 char *
  19 ostype()
  20 {
  21         int mib[2];
  22         size_t len;
  23         char *p;
  24
  25         mib[0] = CTL_KERN;
  26         mib[1] = KERN_OSTYPE;
  27         sysctl(mib, 2, NULL, &len, NULL, 0);
  28         p = malloc(len);
  29         sysctl(mib, 2, p, &len, NULL, 0);
  30         return p;
  31 }
  32
  33 int
  34 has_caps()
  35 {
  36 #ifdef HAS_CAPS
  37         return 1;
  38 #endif
  39         return 0;
  40 }
  41
  42 int
  43 has_npipe()
  44 {
  45 #ifdef HAS_NPIPE
  46         return 1;
  47 #else
  48         return 0;
  49 #endif
  50 }
  51
  52 int
  53 has_tcp()
  54 {
  55 #ifdef HAS_TCP
  56         return 1;
  57 #else
  58         return 0;
  59 #endif
  60 }
  61
  62 /*
  63  * Get transport from transport name.
  64  *
  65  * return(0) if transport is not supported.
  66  * retirn(-1) if transport unknown.
  67  */
  68 int
  69 get_transport(const char *transport_name)
  70 {
  71         if (strcmp(transport_name, "caps") == 0) {
  72                 if (has_caps())
  73                         return DFUI_TRANSPORT_CAPS;
  74                 return(0);
  75         } else if (strcmp(transport_name, "npipe") == 0) {
  76                 if (has_npipe())
  77                         return DFUI_TRANSPORT_NPIPE;
  78                 return(0);
  79         } else if (strcmp(transport_name, "tcp") == 0) {
  80                 if (has_tcp())
  81                         return DFUI_TRANSPORT_TCP;
  82                 return(0);
  83         }
  84         return(-1);
  85 }
  86
  87 /*
  88  * Get transport upon user request
  89  *
  90  * Print appropriate error message to stderr
  91  * and exit if transport not supported or unknown.
  92  */
  93 int
  94 user_get_transport(const char *transport_name)
  95 {
  96         int transport;
  97
  98         transport = get_transport(transport_name);
  99
 100         if (transport == 0) {
 101                 errx(EX_UNAVAILABLE, "Transport is not supported: ``%s''.\n",
 102                     transport_name);
 103         } else if (transport < 0) {
 104                 errx(EX_CONFIG, "Wrong transport name: ``%s''.\n",
 105                     transport_name);
 106         }
 107
 108         return(transport);
 109 }