usr.bin/procstat/procstat_auxv.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2011 Mikolaj Golub
   5  * Copyright (c) 2015 Allan Jude <allanjude@freebsd.org>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * $FreeBSD$
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/elf.h>
  34 #include <sys/sysctl.h>
  35 #include <sys/user.h>
  36
  37 #include <vm/vm.h>
  38
  39 #include <err.h>
  40 #include <errno.h>
  41 #include <libprocstat.h>
  42 #include <limits.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46
  47 #include "procstat.h"
  48
  49 void
  50 procstat_auxv(struct procstat *procstat, struct kinfo_proc *kipp)
  51 {
  52         Elf_Auxinfo *auxv;
  53         u_int count, i;
  54         static char prefix[256];
  55
  56         if ((procstat_opts & PS_OPT_NOHEADER) == 0)
  57                 xo_emit("{T:/%5s %-16s %-16s %-16s}\n", "PID", "COMM", "AUXV",
  58                     "VALUE");
  59
  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
  66         xo_emit("{e:process_id/%5d/%d}{e:command/%-16s/%s}", kipp->ki_pid,
  67             kipp->ki_comm);
  68
  69         for (i = 0; i < count; i++) {
  70                 switch(auxv[i].a_type) {
  71                 case AT_NULL:
  72                         return;
  73                 case AT_IGNORE:
  74                         break;
  75                 case AT_EXECFD:
  76                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECFD/%ld}\n",
  77                             prefix, "AT_EXECFD", (long)auxv[i].a_un.a_val);
  78                         break;
  79                 case AT_PHDR:
  80                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHDR/%p}\n",
  81                             prefix, "AT_PHDR", auxv[i].a_un.a_ptr);
  82                         break;
  83                 case AT_PHENT:
  84                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHENT/%ld}\n",
  85                             prefix, "AT_PHENT", (long)auxv[i].a_un.a_val);
  86                         break;
  87                 case AT_PHNUM:
  88                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHNUM/%ld}\n",
  89                             prefix, "AT_PHNUM", (long)auxv[i].a_un.a_val);
  90                         break;
  91                 case AT_PAGESZ:
  92                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESZ/%ld}\n",
  93                             prefix, "AT_PAGESZ", (long)auxv[i].a_un.a_val);
  94                         break;
  95                 case AT_BASE:
  96                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_BASE/%p}\n",
  97                             prefix, "AT_BASE", auxv[i].a_un.a_ptr);
  98                         break;
  99                 case AT_FLAGS:
 100                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_FLAGS/%#lx}\n",
 101                             prefix, "AT_FLAGS", (u_long)auxv[i].a_un.a_val);
 102                         break;
 103                 case AT_ENTRY:
 104                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENTRY/%p}\n",
 105                             prefix, "AT_ENTRY", auxv[i].a_un.a_ptr);
 106                         break;
 107 #ifdef AT_NOTELF
 108                 case AT_NOTELF:
 109                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NOTELF/%ld}\n",
 110                             prefix, "AT_NOTELF", (long)auxv[i].a_un.a_val);
 111                         break;
 112 #endif
 113 #ifdef AT_UID
 114                 case AT_UID:
 115                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_UID/%ld}\n",
 116                             prefix, "AT_UID", (long)auxv[i].a_un.a_val);
 117                         break;
 118 #endif
 119 #ifdef AT_EUID
 120                 case AT_EUID:
 121                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EUID/%ld}\n",
 122                             prefix, "AT_EUID", (long)auxv[i].a_un.a_val);
 123                         break;
 124 #endif
 125 #ifdef AT_GID
 126                 case AT_GID:
 127                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_GID/%ld}\n",
 128                             prefix, "AT_GID", (long)auxv[i].a_un.a_val);
 129                         break;
 130 #endif
 131 #ifdef AT_EGID
 132                 case AT_EGID:
 133                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EGID/%ld}\n",
 134                             prefix, "AT_EGID", (long)auxv[i].a_un.a_val);
 135                         break;
 136 #endif
 137                 case AT_EXECPATH:
 138                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECPATH/%p}\n",
 139                             prefix, "AT_EXECPATH", auxv[i].a_un.a_ptr);
 140                         break;
 141                 case AT_CANARY:
 142                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARY/%p}\n",
 143                             prefix, "AT_CANARY", auxv[i].a_un.a_ptr);
 144                         break;
 145                 case AT_CANARYLEN:
 146                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARYLEN/%ld}\n",
 147                             prefix, "AT_CANARYLEN", (long)auxv[i].a_un.a_val);
 148                         break;
 149                 case AT_OSRELDATE:
 150                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_OSRELDATE/%ld}\n",
 151                             prefix, "AT_OSRELDATE", (long)auxv[i].a_un.a_val);
 152                         break;
 153                 case AT_NCPUS:
 154                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NCPUS/%ld}\n",
 155                             prefix, "AT_NCPUS", (long)auxv[i].a_un.a_val);
 156                         break;
 157                 case AT_PAGESIZES:
 158                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESIZES/%p}\n",
 159                             prefix, "AT_PAGESIZES", auxv[i].a_un.a_ptr);
 160                         break;
 161                 case AT_PAGESIZESLEN:
 162                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 163                             "{:AT_PAGESIZESLEN/%ld}\n", prefix,
 164                             "AT_PAGESIZESLEN", (long)auxv[i].a_un.a_val);
 165                         break;
 166                 case AT_STACKPROT:
 167                         if ((auxv[i].a_un.a_val & VM_PROT_EXECUTE) != 0)
 168                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 169                                     "{:AT_STACKPROT/%s}\n", prefix,
 170                                     "AT_STACKPROT", "EXECUTABLE");
 171                         else
 172                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 173                                     "{:AT_STACKPROT/%s}\n", prefix,
 174                                     "AT_STACKPROT", "NONEXECUTABLE");
 175                         break;
 176 #ifdef AT_TIMEKEEP
 177                 case AT_TIMEKEEP:
 178                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_TIMEKEEP/%p}\n",
 179                             prefix, "AT_TIMEKEEP", auxv[i].a_un.a_ptr);
 180                         break;
 181 #endif
 182 #ifdef AT_EHDRFLAGS
 183                 case AT_EHDRFLAGS:
 184                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EHDRFLAGS/%#lx}\n",
 185                             prefix, "AT_EHDRFLAGS", (u_long)auxv[i].a_un.a_val);
 186                         break;
 187 #endif
 188                 default:
 189                         xo_emit("{dw:/%s}{Lw:/%16ld/%ld}{:UNKNOWN/%#lx}\n",
 190                             prefix, auxv[i].a_type, auxv[i].a_un.a_val);
 191                         break;
 192                 }
 193         }
 194         xo_emit("\n");
 195         procstat_freeauxv(procstat, auxv);
 196 }
 197