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
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/elf.h>
  35 #include <sys/sysctl.h>
  36 #include <sys/user.h>
  37
  38 #include <vm/vm.h>
  39
  40 #include <err.h>
  41 #include <errno.h>
  42 #include <libprocstat.h>
  43 #include <limits.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47
  48 #include "procstat.h"
  49
  50 void
  51 procstat_auxv(struct procstat *procstat, struct kinfo_proc *kipp)
  52 {
  53         Elf_Auxinfo *auxv;
  54         u_int count, i;
  55         static char prefix[256];
  56
  57         if ((procstat_opts & PS_OPT_NOHEADER) == 0)
  58                 xo_emit("{T:/%5s %-16s %-16s %-16s}\n", "PID", "COMM", "AUXV",
  59                     "VALUE");
  60
  61         auxv = procstat_getauxv(procstat, kipp, &count);
  62         if (auxv == NULL)
  63                 return;
  64         snprintf(prefix, sizeof(prefix), "%5d %-16s", kipp->ki_pid,
  65             kipp->ki_comm);
  66
  67         xo_emit("{e:process_id/%5d/%d}{e:command/%-16s/%s}", kipp->ki_pid,
  68             kipp->ki_comm);
  69
  70         for (i = 0; i < count; i++) {
  71                 switch(auxv[i].a_type) {
  72                 case AT_NULL:
  73                         return;
  74                 case AT_IGNORE:
  75                         break;
  76                 case AT_EXECFD:
  77                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECFD/%ld}\n",
  78                             prefix, "AT_EXECFD", (long)auxv[i].a_un.a_val);
  79                         break;
  80                 case AT_PHDR:
  81                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHDR/%p}\n",
  82                             prefix, "AT_PHDR", auxv[i].a_un.a_ptr);
  83                         break;
  84                 case AT_PHENT:
  85                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHENT/%ld}\n",
  86                             prefix, "AT_PHENT", (long)auxv[i].a_un.a_val);
  87                         break;
  88                 case AT_PHNUM:
  89                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHNUM/%ld}\n",
  90                             prefix, "AT_PHNUM", (long)auxv[i].a_un.a_val);
  91                         break;
  92                 case AT_PAGESZ:
  93                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESZ/%ld}\n",
  94                             prefix, "AT_PAGESZ", (long)auxv[i].a_un.a_val);
  95                         break;
  96                 case AT_BASE:
  97                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_BASE/%p}\n",
  98                             prefix, "AT_BASE", auxv[i].a_un.a_ptr);
  99                         break;
 100                 case AT_FLAGS:
 101                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_FLAGS/%#lx}\n",
 102                             prefix, "AT_FLAGS", (u_long)auxv[i].a_un.a_val);
 103                         break;
 104                 case AT_ENTRY:
 105                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENTRY/%p}\n",
 106                             prefix, "AT_ENTRY", auxv[i].a_un.a_ptr);
 107                         break;
 108 #ifdef AT_NOTELF
 109                 case AT_NOTELF:
 110                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NOTELF/%ld}\n",
 111                             prefix, "AT_NOTELF", (long)auxv[i].a_un.a_val);
 112                         break;
 113 #endif
 114 #ifdef AT_UID
 115                 case AT_UID:
 116                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_UID/%ld}\n",
 117                             prefix, "AT_UID", (long)auxv[i].a_un.a_val);
 118                         break;
 119 #endif
 120 #ifdef AT_EUID
 121                 case AT_EUID:
 122                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EUID/%ld}\n",
 123                             prefix, "AT_EUID", (long)auxv[i].a_un.a_val);
 124                         break;
 125 #endif
 126 #ifdef AT_GID
 127                 case AT_GID:
 128                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_GID/%ld}\n",
 129                             prefix, "AT_GID", (long)auxv[i].a_un.a_val);
 130                         break;
 131 #endif
 132 #ifdef AT_EGID
 133                 case AT_EGID:
 134                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EGID/%ld}\n",
 135                             prefix, "AT_EGID", (long)auxv[i].a_un.a_val);
 136                         break;
 137 #endif
 138                 case AT_EXECPATH:
 139                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECPATH/%p}\n",
 140                             prefix, "AT_EXECPATH", auxv[i].a_un.a_ptr);
 141                         break;
 142                 case AT_CANARY:
 143                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARY/%p}\n",
 144                             prefix, "AT_CANARY", auxv[i].a_un.a_ptr);
 145                         break;
 146                 case AT_CANARYLEN:
 147                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARYLEN/%ld}\n",
 148                             prefix, "AT_CANARYLEN", (long)auxv[i].a_un.a_val);
 149                         break;
 150                 case AT_OSRELDATE:
 151                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_OSRELDATE/%ld}\n",
 152                             prefix, "AT_OSRELDATE", (long)auxv[i].a_un.a_val);
 153                         break;
 154                 case AT_NCPUS:
 155                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NCPUS/%ld}\n",
 156                             prefix, "AT_NCPUS", (long)auxv[i].a_un.a_val);
 157                         break;
 158                 case AT_PAGESIZES:
 159                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESIZES/%p}\n",
 160                             prefix, "AT_PAGESIZES", auxv[i].a_un.a_ptr);
 161                         break;
 162                 case AT_PAGESIZESLEN:
 163                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 164                             "{:AT_PAGESIZESLEN/%ld}\n", prefix,
 165                             "AT_PAGESIZESLEN", (long)auxv[i].a_un.a_val);
 166                         break;
 167                 case AT_STACKPROT:
 168                         if ((auxv[i].a_un.a_val & VM_PROT_EXECUTE) != 0)
 169                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 170                                     "{:AT_STACKPROT/%s}\n", prefix,
 171                                     "AT_STACKPROT", "EXECUTABLE");
 172                         else
 173                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 174                                     "{:AT_STACKPROT/%s}\n", prefix,
 175                                     "AT_STACKPROT", "NONEXECUTABLE");
 176                         break;
 177 #ifdef AT_TIMEKEEP
 178                 case AT_TIMEKEEP:
 179                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_TIMEKEEP/%p}\n",
 180                             prefix, "AT_TIMEKEEP", auxv[i].a_un.a_ptr);
 181                         break;
 182 #endif
 183 #ifdef AT_EHDRFLAGS
 184                 case AT_EHDRFLAGS:
 185                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EHDRFLAGS/%#lx}\n",
 186                             prefix, "AT_EHDRFLAGS", (u_long)auxv[i].a_un.a_val);
 187                         break;
 188 #endif
 189 #ifdef AT_HWCAP
 190                 case AT_HWCAP:
 191                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_HWCAP/%#lx}\n",
 192                             prefix, "AT_HWCAP", (u_long)auxv[i].a_un.a_val);
 193                         break;
 194 #endif
 195 #ifdef AT_HWCAP2
 196                 case AT_HWCAP2:
 197                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_HWCAP2/%#lx}\n",
 198                             prefix, "AT_HWCAP2", (u_long)auxv[i].a_un.a_val);
 199                         break;
 200 #endif
 201 #ifdef AT_BSDFLAGS
 202                 case AT_BSDFLAGS:
 203                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_BSDFLAGS/%#lx}\n",
 204                             prefix, "AT_BSDFLAGS", (u_long)auxv[i].a_un.a_val);
 205                         break;
 206 #endif
 207 #ifdef AT_ARGC
 208                 case AT_ARGC:
 209                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ARGC/%ld}\n",
 210                             prefix, "AT_ARGC", (long)auxv[i].a_un.a_val);
 211                         break;
 212 #endif
 213 #ifdef AT_ARGV
 214                 case AT_ARGV:
 215                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ARGV/%p}\n",
 216                             prefix, "AT_ARGV", auxv[i].a_un.a_ptr);
 217                         break;
 218 #endif
 219 #ifdef AT_ENVC
 220                 case AT_ENVC:
 221                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENVC/%ld}\n",
 222                             prefix, "AT_ENVC", (long)auxv[i].a_un.a_val);
 223                         break;
 224 #endif
 225 #ifdef AT_ENVV
 226                 case AT_ENVV:
 227                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENVV/%p}\n",
 228                             prefix, "AT_ENVV", auxv[i].a_un.a_ptr);
 229                         break;
 230 #endif
 231 #ifdef AT_PS_STRINGS
 232                 case AT_PS_STRINGS:
 233                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PS_STRINGS/%p}\n",
 234                             prefix, "AT_PS_STRINGS", auxv[i].a_un.a_ptr);
 235                         break;
 236 #endif
 237                 default:
 238                         xo_emit("{dw:/%s}{Lw:/%16ld/%ld}{:UNKNOWN/%#lx}\n",
 239                             prefix, auxv[i].a_type, auxv[i].a_un.a_val);
 240                         break;
 241                 }
 242         }
 243         xo_emit("\n");
 244         procstat_freeauxv(procstat, auxv);
 245 }
 246