none/tests/freebsd/auxv.c

   1 #include <stdio.h>
   2 #include <elf.h>
   3 #include <sys/exec.h>
   4 #include "../../../config.h"
   5
   6 /* /usr/include/x86/elf.h AT_* defs */
   7
   8 typedef struct {
   9         const char *str_val;
  10         int type;
  11 } Elf_AuxStr;
  12
  13 Elf_AuxStr aux_map[] = {
  14         {"AT_NULL",     0},
  15         {"AT_IGNORE",   1},
  16         {"AT_EXECFD",   2},
  17         {"AT_PHDR",     3},
  18         {"AT_PHENT",    4},
  19         {"AT_PHNUM",    5},
  20         {"AT_PAGESZ",   6},
  21         {"AT_BASE",     7},
  22         {"AT_FLAGS",    8},
  23         {"AT_ENTRY",    9},
  24         {"AT_NOTELF",   10},
  25         {"AT_UID",      11},
  26         {"AT_EUID",     12},
  27         {"AT_GID",      13},
  28         {"AT_EGID",     14},
  29         {"AT_EXECPATH", 15},
  30         {"AT_CANARY",   16},
  31         {"AT_CANARYLEN", 17},
  32         {"AT_OSRELDATE", 18},
  33         {"AT_NCPUS",    19},
  34         {"AT_PAGESIZES", 20},
  35         {"AT_PAGESIZESLEN", 21},
  36         {"AT_TIMEKEEP", 22},
  37         {"AT_STACKPROT", 23},
  38         {"AT_EHDRFLAGS", 24},
  39         {"AT_HWCAP", 25},
  40         {"AT_HWCAP2", 26},
  41         {"AT_BSDFLAGS", 27},
  42         {"AT_ARGC", 28},
  43         {"AT_ARGV", 29},
  44         {"AT_ENVC", 30},
  45         {"AT_ENVV", 31},
  46         {"AT_PS_STRINGS", 32},
  47         {"AT_FXRNG", 33},
  48         {"AT_KPRELOAD", 34},
  49         {"AT_USRSTACKBASE", 35},
  50         {"AT_USRSTACKLIM", 36},
  51 //      {"AT_COUNT", 37},
  52 };
  53
  54 int main(int argc, char* argv[], char* envp[])
  55 {
  56     Elf_Auxinfo *auxp;
  57     Elf_AuxStr *aux_str;
  58     while(*envp++ != NULL)
  59         ;
  60
  61     for (auxp = (Elf_Auxinfo *)envp; auxp->a_type != AT_NULL; auxp++)
  62     {
  63         aux_str = &aux_map[auxp->a_type];
  64         fprintf(stderr, "val: %s int: %02d ptr: 0x%lx\n", aux_str->str_val, aux_str->type, auxp->a_un.a_val);
  65         switch ( aux_str->type)
  66         {
  67         case AT_EXECPATH:
  68             if (auxp->a_un.a_val != 0)
  69             {
  70                 fprintf(stderr, "EXECPATH: %s\n", (char*)auxp->a_un.a_val);
  71             }
  72             break;
  73 #if defined(AT_ARGV)
  74         case AT_ARGV:
  75             if (auxp->a_un.a_val != 0)
  76             {
  77                 fprintf(stderr, "ARGV: %s\n", *(char**)auxp->a_un.a_val);
  78             }
  79             break;
  80 #endif
  81 #if defined(AT_ENVV)
  82         case AT_ENVV:
  83             if (auxp->a_un.a_val != 0)
  84             {
  85                 /* can't leave this in regtest don't know what it
  86                  * will be */
  87                 /*fprintf(stderr, "ENVV: %s\n", *(char**)auxp->a_un.a_val);*/
  88             }
  89             break;
  90 #endif
  91 #if defined(AT_PS_STRINGS)
  92         case AT_PS_STRINGS:
  93             if (auxp->a_un.a_val != 0)
  94             {
  95                 struct ps_strings *ppss = (struct ps_strings*)auxp->a_un.a_val;
  96                 fprintf(stderr, "PS_STRINGS ARGV: %s\n", *ppss->ps_argvstr);
  97                 /* can't leave this in regtest don't know what it
  98                  * will be */
  99                 /*fprintf(stderr, "PS_STRINGS ENVV: %s\n", *ppss->ps_envstr);*/
 100             }
 101             break;
 102 #endif
 103         default:
 104            break;
 105         }
 106     }
 107 }