usr.bin/procstat/procstat_auxv.c

   1 /*-
   2  * Copyright (c) 2011 Mikolaj Golub
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/elf.h>
  31 #include <sys/sysctl.h>
  32 #include <sys/user.h>
  33
  34 #include <vm/vm.h>
  35
  36 #include <err.h>
  37 #include <errno.h>
  38 #include <libprocstat.h>
  39 #include <limits.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43
  44 #include "procstat.h"
  45
  46 #define PRINT(name, spec, val)          \
  47         printf("%s %-16s " #spec "\n", prefix, #name, (val))
  48 #define PRINT_UNKNOWN(type, val)        \
  49         printf("%s %16ld %#lx\n", prefix, (long)type, (u_long)(val))
  50
  51 void
  52 procstat_auxv(struct procstat *procstat, struct kinfo_proc *kipp)
  53 {
  54         Elf_Auxinfo *auxv;
  55         u_int count, i;
  56         static char prefix[256];
  57
  58         if (!hflag)
  59                 printf("%5s %-16s %-16s %-16s\n", "PID", "COMM", "AUXV", "VALUE");
  60         auxv = procstat_getauxv(procstat, kipp, &count);
  61         if (auxv == NULL)
  62                 return;
  63         snprintf(prefix, sizeof(prefix), "%5d %-16s", kipp->ki_pid,
  64             kipp->ki_comm);
  65         for (i = 0; i < count; i++) {
  66                 switch(auxv[i].a_type) {
  67                 case AT_NULL:
  68                         return;
  69                 case AT_IGNORE:
  70                         break;
  71                 case AT_EXECFD:
  72                         PRINT(AT_EXECFD, %ld, (long)auxv[i].a_un.a_val);
  73                         break;
  74                 case AT_PHDR:
  75                         PRINT(AT_PHDR, %p, auxv[i].a_un.a_ptr);
  76                         break;
  77                 case AT_PHENT:
  78                         PRINT(AT_PHENT, %ld, (long)auxv[i].a_un.a_val);
  79                         break;
  80                 case AT_PHNUM:
  81                         PRINT(AT_PHNUM, %ld, (long)auxv[i].a_un.a_val);
  82                         break;
  83                 case AT_PAGESZ:
  84                         PRINT(AT_PAGESZ, %ld, (long)auxv[i].a_un.a_val);
  85                         break;
  86                 case AT_BASE:
  87                         PRINT(AT_BASE, %p, auxv[i].a_un.a_ptr);
  88                         break;
  89                 case AT_FLAGS:
  90                         PRINT(AT_FLAGS, %#lx, (u_long)auxv[i].a_un.a_val);
  91                         break;
  92                 case AT_ENTRY:
  93                         PRINT(AT_ENTRY, %p, auxv[i].a_un.a_ptr);
  94                         break;
  95 #ifdef AT_NOTELF
  96                 case AT_NOTELF:
  97                         PRINT(AT_NOTELF, %ld, (long)auxv[i].a_un.a_val);
  98                         break;
  99 #endif
 100 #ifdef AT_UID
 101                 case AT_UID:
 102                         PRINT(AT_UID, %ld, (long)auxv[i].a_un.a_val);
 103                         break;
 104 #endif
 105 #ifdef AT_EUID
 106                 case AT_EUID:
 107                         PRINT(AT_EUID, %ld, (long)auxv[i].a_un.a_val);
 108                         break;
 109 #endif
 110 #ifdef AT_GID
 111                 case AT_GID:
 112                         PRINT(AT_GID, %ld, (long)auxv[i].a_un.a_val);
 113                         break;
 114 #endif
 115 #ifdef AT_EGID
 116                 case AT_EGID:
 117                         PRINT(AT_EGID, %ld, (long)auxv[i].a_un.a_val);
 118                         break;
 119 #endif
 120                 case AT_EXECPATH:
 121                         PRINT(AT_EXECPATH, %p, auxv[i].a_un.a_ptr);
 122                         break;
 123                 case AT_CANARY:
 124                         PRINT(AT_CANARY, %p, auxv[i].a_un.a_ptr);
 125                         break;
 126                 case AT_CANARYLEN:
 127                         PRINT(AT_CANARYLEN, %ld, (long)auxv[i].a_un.a_val);
 128                         break;
 129                 case AT_OSRELDATE:
 130                         PRINT(AT_OSRELDATE, %ld, (long)auxv[i].a_un.a_val);
 131                         break;
 132                 case AT_NCPUS:
 133                         PRINT(AT_NCPUS, %ld, (long)auxv[i].a_un.a_val);
 134                         break;
 135                 case AT_PAGESIZES:
 136                         PRINT(AT_PAGESIZES, %p, auxv[i].a_un.a_ptr);
 137                         break;
 138                 case AT_PAGESIZESLEN:
 139                         PRINT(AT_PAGESIZESLEN, %ld, (long)auxv[i].a_un.a_val);
 140                         break;
 141                 case AT_STACKPROT:
 142                         if ((auxv[i].a_un.a_val & VM_PROT_EXECUTE) != 0)
 143                                 PRINT(AT_STACKPROT, %s, "NONEXECUTABLE");
 144                         else
 145                                 PRINT(AT_STACKPROT, %s, "EXECUTABLE");
 146                         break;
 147 #ifdef AT_TIMEKEEP
 148                 case AT_TIMEKEEP:
 149                         PRINT(AT_TIMEKEEP, %p, auxv[i].a_un.a_ptr);
 150                         break;
 151 #endif
 152                 default:
 153                         PRINT_UNKNOWN(auxv[i].a_type, auxv[i].a_un.a_val);
 154                         break;
 155                 }
 156         }
 157         printf("\n");
 158         procstat_freeauxv(procstat, auxv);
 159 }
 160