usr.bin/procstat/procstat_auxv.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   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/param.h>
  31 #include <sys/elf.h>
  32 #include <sys/sysctl.h>
  33 #include <sys/user.h>
  34
  35 #include <vm/vm.h>
  36
  37 #include <err.h>
  38 #include <errno.h>
  39 #include <libprocstat.h>
  40 #include <limits.h>
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44
  45 #include "procstat.h"
  46
  47 void
  48 procstat_auxv(struct procstat *procstat, struct kinfo_proc *kipp)
  49 {
  50         Elf_Auxinfo *auxv;
  51         u_int count, i;
  52         static char prefix[256];
  53
  54         if ((procstat_opts & PS_OPT_NOHEADER) == 0)
  55                 xo_emit("{T:/%5s %-19s %-16s %-16s}\n", "PID", "COMM", "AUXV",
  56                     "VALUE");
  57
  58         auxv = procstat_getauxv(procstat, kipp, &count);
  59         if (auxv == NULL)
  60                 return;
  61         snprintf(prefix, sizeof(prefix), "%5d %-19s", kipp->ki_pid,
  62             kipp->ki_comm);
  63
  64         xo_emit("{e:process_id/%5d/%d}{e:command/%-19s/%s}", kipp->ki_pid,
  65             kipp->ki_comm);
  66
  67         for (i = 0; i < count; i++) {
  68                 switch(auxv[i].a_type) {
  69                 case AT_NULL:
  70                         return;
  71                 case AT_IGNORE:
  72                         break;
  73                 case AT_EXECFD:
  74                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECFD/%ld}\n",
  75                             prefix, "AT_EXECFD", (long)auxv[i].a_un.a_val);
  76                         break;
  77                 case AT_PHDR:
  78                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHDR/%p}\n",
  79                             prefix, "AT_PHDR", auxv[i].a_un.a_ptr);
  80                         break;
  81                 case AT_PHENT:
  82                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHENT/%ld}\n",
  83                             prefix, "AT_PHENT", (long)auxv[i].a_un.a_val);
  84                         break;
  85                 case AT_PHNUM:
  86                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHNUM/%ld}\n",
  87                             prefix, "AT_PHNUM", (long)auxv[i].a_un.a_val);
  88                         break;
  89                 case AT_PAGESZ:
  90                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESZ/%ld}\n",
  91                             prefix, "AT_PAGESZ", (long)auxv[i].a_un.a_val);
  92                         break;
  93                 case AT_BASE:
  94                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_BASE/%p}\n",
  95                             prefix, "AT_BASE", auxv[i].a_un.a_ptr);
  96                         break;
  97                 case AT_FLAGS:
  98                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_FLAGS/%#lx}\n",
  99                             prefix, "AT_FLAGS", (u_long)auxv[i].a_un.a_val);
 100                         break;
 101                 case AT_ENTRY:
 102                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENTRY/%p}\n",
 103                             prefix, "AT_ENTRY", auxv[i].a_un.a_ptr);
 104                         break;
 105 #ifdef AT_NOTELF
 106                 case AT_NOTELF:
 107                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NOTELF/%ld}\n",
 108                             prefix, "AT_NOTELF", (long)auxv[i].a_un.a_val);
 109                         break;
 110 #endif
 111 #ifdef AT_UID
 112                 case AT_UID:
 113                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_UID/%ld}\n",
 114                             prefix, "AT_UID", (long)auxv[i].a_un.a_val);
 115                         break;
 116 #endif
 117 #ifdef AT_EUID
 118                 case AT_EUID:
 119                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EUID/%ld}\n",
 120                             prefix, "AT_EUID", (long)auxv[i].a_un.a_val);
 121                         break;
 122 #endif
 123 #ifdef AT_GID
 124                 case AT_GID:
 125                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_GID/%ld}\n",
 126                             prefix, "AT_GID", (long)auxv[i].a_un.a_val);
 127                         break;
 128 #endif
 129 #ifdef AT_EGID
 130                 case AT_EGID:
 131                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EGID/%ld}\n",
 132                             prefix, "AT_EGID", (long)auxv[i].a_un.a_val);
 133                         break;
 134 #endif
 135                 case AT_EXECPATH:
 136                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECPATH/%p}\n",
 137                             prefix, "AT_EXECPATH", auxv[i].a_un.a_ptr);
 138                         break;
 139                 case AT_CANARY:
 140                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARY/%p}\n",
 141                             prefix, "AT_CANARY", auxv[i].a_un.a_ptr);
 142                         break;
 143                 case AT_CANARYLEN:
 144                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARYLEN/%ld}\n",
 145                             prefix, "AT_CANARYLEN", (long)auxv[i].a_un.a_val);
 146                         break;
 147                 case AT_OSRELDATE:
 148                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_OSRELDATE/%ld}\n",
 149                             prefix, "AT_OSRELDATE", (long)auxv[i].a_un.a_val);
 150                         break;
 151                 case AT_NCPUS:
 152                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NCPUS/%ld}\n",
 153                             prefix, "AT_NCPUS", (long)auxv[i].a_un.a_val);
 154                         break;
 155                 case AT_PAGESIZES:
 156                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESIZES/%p}\n",
 157                             prefix, "AT_PAGESIZES", auxv[i].a_un.a_ptr);
 158                         break;
 159                 case AT_PAGESIZESLEN:
 160                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 161                             "{:AT_PAGESIZESLEN/%ld}\n", prefix,
 162                             "AT_PAGESIZESLEN", (long)auxv[i].a_un.a_val);
 163                         break;
 164                 case AT_STACKPROT:
 165                         if ((auxv[i].a_un.a_val & VM_PROT_EXECUTE) != 0)
 166                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 167                                     "{:AT_STACKPROT/%s}\n", prefix,
 168                                     "AT_STACKPROT", "EXECUTABLE");
 169                         else
 170                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 171                                     "{:AT_STACKPROT/%s}\n", prefix,
 172                                     "AT_STACKPROT", "NONEXECUTABLE");
 173                         break;
 174 #ifdef AT_TIMEKEEP
 175                 case AT_TIMEKEEP:
 176                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_TIMEKEEP/%p}\n",
 177                             prefix, "AT_TIMEKEEP", auxv[i].a_un.a_ptr);
 178                         break;
 179 #endif
 180 #ifdef AT_EHDRFLAGS
 181                 case AT_EHDRFLAGS:
 182                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EHDRFLAGS/%#lx}\n",
 183                             prefix, "AT_EHDRFLAGS", (u_long)auxv[i].a_un.a_val);
 184                         break;
 185 #endif
 186 #ifdef AT_HWCAP
 187                 case AT_HWCAP:
 188                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_HWCAP/%#lx}\n",
 189                             prefix, "AT_HWCAP", (u_long)auxv[i].a_un.a_val);
 190                         break;
 191 #endif
 192 #ifdef AT_HWCAP2
 193                 case AT_HWCAP2:
 194                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_HWCAP2/%#lx}\n",
 195                             prefix, "AT_HWCAP2", (u_long)auxv[i].a_un.a_val);
 196                         break;
 197 #endif
 198 #ifdef AT_BSDFLAGS
 199                 case AT_BSDFLAGS:
 200                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_BSDFLAGS/%#lx}\n",
 201                             prefix, "AT_BSDFLAGS", (u_long)auxv[i].a_un.a_val);
 202                         break;
 203 #endif
 204 #ifdef AT_ARGC
 205                 case AT_ARGC:
 206                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ARGC/%ld}\n",
 207                             prefix, "AT_ARGC", (long)auxv[i].a_un.a_val);
 208                         break;
 209 #endif
 210 #ifdef AT_ARGV
 211                 case AT_ARGV:
 212                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ARGV/%p}\n",
 213                             prefix, "AT_ARGV", auxv[i].a_un.a_ptr);
 214                         break;
 215 #endif
 216 #ifdef AT_ENVC
 217                 case AT_ENVC:
 218                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENVC/%ld}\n",
 219                             prefix, "AT_ENVC", (long)auxv[i].a_un.a_val);
 220                         break;
 221 #endif
 222 #ifdef AT_ENVV
 223                 case AT_ENVV:
 224                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENVV/%p}\n",
 225                             prefix, "AT_ENVV", auxv[i].a_un.a_ptr);
 226                         break;
 227 #endif
 228 #ifdef AT_PS_STRINGS
 229                 case AT_PS_STRINGS:
 230                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PS_STRINGS/%p}\n",
 231                             prefix, "AT_PS_STRINGS", auxv[i].a_un.a_ptr);
 232                         break;
 233 #endif
 234 #ifdef AT_FXRNG
 235                 case AT_FXRNG:
 236                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_FXRNG/%p}\n",
 237                             prefix, "AT_FXRNG", auxv[i].a_un.a_ptr);
 238                         break;
 239 #endif
 240 #ifdef AT_KPRELOAD
 241                 case AT_KPRELOAD:
 242                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_KPRELOAD/%p}\n",
 243                             prefix, "AT_KPRELOAD", auxv[i].a_un.a_ptr);
 244                         break;
 245 #endif
 246 #ifdef AT_USRSTACKBASE
 247                 case AT_USRSTACKBASE:
 248                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 249                             "{:AT_USRSTACKBASE/%#lx}\n",
 250                             prefix, "AT_USRSTACKBASE", auxv[i].a_un.a_val);
 251                         break;
 252 #endif
 253 #ifdef AT_USRSTACKLIM
 254                 case AT_USRSTACKLIM:
 255                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 256                             "{:AT_USRSTACKLIM/%#lx}\n",
 257                             prefix, "AT_USRSTACKLIM", auxv[i].a_un.a_val);
 258                         break;
 259 #endif
 260                 default:
 261                         xo_emit("{dw:/%s}{Lw:/%16ld/%ld}{:UNKNOWN/%#lx}\n",
 262                             prefix, auxv[i].a_type, auxv[i].a_un.a_val);
 263                         break;
 264                 }
 265         }
 266         xo_emit("\n");
 267         procstat_freeauxv(procstat, auxv);
 268 }
 269