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/cdefs.h>
  31 #include <sys/param.h>
  32 #include <sys/elf.h>
  33 #include <sys/sysctl.h>
  34 #include <sys/user.h>
  35
  36 #include <vm/vm.h>
  37
  38 #include <err.h>
  39 #include <errno.h>
  40 #include <libprocstat.h>
  41 #include <limits.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45
  46 #include "procstat.h"
  47
  48 void
  49 procstat_auxv(struct procstat *procstat, struct kinfo_proc *kipp)
  50 {
  51         Elf_Auxinfo *auxv;
  52         u_int count, i;
  53         static char prefix[256];
  54
  55         if ((procstat_opts & PS_OPT_NOHEADER) == 0)
  56                 xo_emit("{T:/%5s %-16s %-16s %-16s}\n", "PID", "COMM", "AUXV",
  57                     "VALUE");
  58
  59         auxv = procstat_getauxv(procstat, kipp, &count);
  60         if (auxv == NULL)
  61                 return;
  62         snprintf(prefix, sizeof(prefix), "%5d %-16s", kipp->ki_pid,
  63             kipp->ki_comm);
  64
  65         xo_emit("{e:process_id/%5d/%d}{e:command/%-16s/%s}", kipp->ki_pid,
  66             kipp->ki_comm);
  67
  68         for (i = 0; i < count; i++) {
  69                 switch(auxv[i].a_type) {
  70                 case AT_NULL:
  71                         return;
  72                 case AT_IGNORE:
  73                         break;
  74                 case AT_EXECFD:
  75                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECFD/%ld}\n",
  76                             prefix, "AT_EXECFD", (long)auxv[i].a_un.a_val);
  77                         break;
  78                 case AT_PHDR:
  79                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHDR/%p}\n",
  80                             prefix, "AT_PHDR", auxv[i].a_un.a_ptr);
  81                         break;
  82                 case AT_PHENT:
  83                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHENT/%ld}\n",
  84                             prefix, "AT_PHENT", (long)auxv[i].a_un.a_val);
  85                         break;
  86                 case AT_PHNUM:
  87                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PHNUM/%ld}\n",
  88                             prefix, "AT_PHNUM", (long)auxv[i].a_un.a_val);
  89                         break;
  90                 case AT_PAGESZ:
  91                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESZ/%ld}\n",
  92                             prefix, "AT_PAGESZ", (long)auxv[i].a_un.a_val);
  93                         break;
  94                 case AT_BASE:
  95                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_BASE/%p}\n",
  96                             prefix, "AT_BASE", auxv[i].a_un.a_ptr);
  97                         break;
  98                 case AT_FLAGS:
  99                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_FLAGS/%#lx}\n",
 100                             prefix, "AT_FLAGS", (u_long)auxv[i].a_un.a_val);
 101                         break;
 102                 case AT_ENTRY:
 103                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENTRY/%p}\n",
 104                             prefix, "AT_ENTRY", auxv[i].a_un.a_ptr);
 105                         break;
 106 #ifdef AT_NOTELF
 107                 case AT_NOTELF:
 108                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NOTELF/%ld}\n",
 109                             prefix, "AT_NOTELF", (long)auxv[i].a_un.a_val);
 110                         break;
 111 #endif
 112 #ifdef AT_UID
 113                 case AT_UID:
 114                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_UID/%ld}\n",
 115                             prefix, "AT_UID", (long)auxv[i].a_un.a_val);
 116                         break;
 117 #endif
 118 #ifdef AT_EUID
 119                 case AT_EUID:
 120                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EUID/%ld}\n",
 121                             prefix, "AT_EUID", (long)auxv[i].a_un.a_val);
 122                         break;
 123 #endif
 124 #ifdef AT_GID
 125                 case AT_GID:
 126                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_GID/%ld}\n",
 127                             prefix, "AT_GID", (long)auxv[i].a_un.a_val);
 128                         break;
 129 #endif
 130 #ifdef AT_EGID
 131                 case AT_EGID:
 132                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EGID/%ld}\n",
 133                             prefix, "AT_EGID", (long)auxv[i].a_un.a_val);
 134                         break;
 135 #endif
 136                 case AT_EXECPATH:
 137                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EXECPATH/%p}\n",
 138                             prefix, "AT_EXECPATH", auxv[i].a_un.a_ptr);
 139                         break;
 140                 case AT_CANARY:
 141                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARY/%p}\n",
 142                             prefix, "AT_CANARY", auxv[i].a_un.a_ptr);
 143                         break;
 144                 case AT_CANARYLEN:
 145                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_CANARYLEN/%ld}\n",
 146                             prefix, "AT_CANARYLEN", (long)auxv[i].a_un.a_val);
 147                         break;
 148                 case AT_OSRELDATE:
 149                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_OSRELDATE/%ld}\n",
 150                             prefix, "AT_OSRELDATE", (long)auxv[i].a_un.a_val);
 151                         break;
 152                 case AT_NCPUS:
 153                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_NCPUS/%ld}\n",
 154                             prefix, "AT_NCPUS", (long)auxv[i].a_un.a_val);
 155                         break;
 156                 case AT_PAGESIZES:
 157                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PAGESIZES/%p}\n",
 158                             prefix, "AT_PAGESIZES", auxv[i].a_un.a_ptr);
 159                         break;
 160                 case AT_PAGESIZESLEN:
 161                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 162                             "{:AT_PAGESIZESLEN/%ld}\n", prefix,
 163                             "AT_PAGESIZESLEN", (long)auxv[i].a_un.a_val);
 164                         break;
 165                 case AT_STACKPROT:
 166                         if ((auxv[i].a_un.a_val & VM_PROT_EXECUTE) != 0)
 167                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 168                                     "{:AT_STACKPROT/%s}\n", prefix,
 169                                     "AT_STACKPROT", "EXECUTABLE");
 170                         else
 171                                 xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 172                                     "{:AT_STACKPROT/%s}\n", prefix,
 173                                     "AT_STACKPROT", "NONEXECUTABLE");
 174                         break;
 175 #ifdef AT_TIMEKEEP
 176                 case AT_TIMEKEEP:
 177                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_TIMEKEEP/%p}\n",
 178                             prefix, "AT_TIMEKEEP", auxv[i].a_un.a_ptr);
 179                         break;
 180 #endif
 181 #ifdef AT_EHDRFLAGS
 182                 case AT_EHDRFLAGS:
 183                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_EHDRFLAGS/%#lx}\n",
 184                             prefix, "AT_EHDRFLAGS", (u_long)auxv[i].a_un.a_val);
 185                         break;
 186 #endif
 187 #ifdef AT_HWCAP
 188                 case AT_HWCAP:
 189                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_HWCAP/%#lx}\n",
 190                             prefix, "AT_HWCAP", (u_long)auxv[i].a_un.a_val);
 191                         break;
 192 #endif
 193 #ifdef AT_HWCAP2
 194                 case AT_HWCAP2:
 195                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_HWCAP2/%#lx}\n",
 196                             prefix, "AT_HWCAP2", (u_long)auxv[i].a_un.a_val);
 197                         break;
 198 #endif
 199 #ifdef AT_BSDFLAGS
 200                 case AT_BSDFLAGS:
 201                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_BSDFLAGS/%#lx}\n",
 202                             prefix, "AT_BSDFLAGS", (u_long)auxv[i].a_un.a_val);
 203                         break;
 204 #endif
 205 #ifdef AT_ARGC
 206                 case AT_ARGC:
 207                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ARGC/%ld}\n",
 208                             prefix, "AT_ARGC", (long)auxv[i].a_un.a_val);
 209                         break;
 210 #endif
 211 #ifdef AT_ARGV
 212                 case AT_ARGV:
 213                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ARGV/%p}\n",
 214                             prefix, "AT_ARGV", auxv[i].a_un.a_ptr);
 215                         break;
 216 #endif
 217 #ifdef AT_ENVC
 218                 case AT_ENVC:
 219                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENVC/%ld}\n",
 220                             prefix, "AT_ENVC", (long)auxv[i].a_un.a_val);
 221                         break;
 222 #endif
 223 #ifdef AT_ENVV
 224                 case AT_ENVV:
 225                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_ENVV/%p}\n",
 226                             prefix, "AT_ENVV", auxv[i].a_un.a_ptr);
 227                         break;
 228 #endif
 229 #ifdef AT_PS_STRINGS
 230                 case AT_PS_STRINGS:
 231                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_PS_STRINGS/%p}\n",
 232                             prefix, "AT_PS_STRINGS", auxv[i].a_un.a_ptr);
 233                         break;
 234 #endif
 235 #ifdef AT_FXRNG
 236                 case AT_FXRNG:
 237                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_FXRNG/%p}\n",
 238                             prefix, "AT_FXRNG", auxv[i].a_un.a_ptr);
 239                         break;
 240 #endif
 241 #ifdef AT_KPRELOAD
 242                 case AT_KPRELOAD:
 243                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}{:AT_KPRELOAD/%p}\n",
 244                             prefix, "AT_KPRELOAD", auxv[i].a_un.a_ptr);
 245                         break;
 246 #endif
 247 #ifdef AT_USRSTACKBASE
 248                 case AT_USRSTACKBASE:
 249                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 250                             "{:AT_USRSTACKBASE/%#lx}\n",
 251                             prefix, "AT_USRSTACKBASE", auxv[i].a_un.a_val);
 252                         break;
 253 #endif
 254 #ifdef AT_USRSTACKLIM
 255                 case AT_USRSTACKLIM:
 256                         xo_emit("{dw:/%s}{Lw:/%-16s/%s}"
 257                             "{:AT_USRSTACKLIM/%#lx}\n",
 258                             prefix, "AT_USRSTACKLIM", auxv[i].a_un.a_val);
 259                         break;
 260 #endif
 261                 default:
 262                         xo_emit("{dw:/%s}{Lw:/%16ld/%ld}{:UNKNOWN/%#lx}\n",
 263                             prefix, auxv[i].a_type, auxv[i].a_un.a_val);
 264                         break;
 265                 }
 266         }
 267         xo_emit("\n");
 268         procstat_freeauxv(procstat, auxv);
 269 }
 270