elf/tst-auditmod23.c

   1 /* Audit module loaded by tst-audit23.
   2    Copyright (C) 2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <link.h>
  20 #include <inttypes.h>
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <sys/auxv.h>
  25
  26 unsigned int
  27 la_version (unsigned int version)
  28 {
  29   return LAV_CURRENT;
  30 }
  31
  32 struct map_desc_t
  33 {
  34   char *lname;
  35   uintptr_t laddr;
  36   Lmid_t lmid;
  37 };
  38
  39 void
  40 la_activity (uintptr_t *cookie, unsigned int flag)
  41 {
  42   fprintf (stderr, "%s: %d %"PRIxPTR"\n", __func__, flag, (uintptr_t) cookie);
  43 }
  44
  45 unsigned int
  46 la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t *cookie)
  47 {
  48   const char *l_name = map->l_name[0] == '\0' ? "mainapp" : map->l_name;
  49   fprintf (stderr, "%s: %"PRIxPTR" %s %"PRIxPTR" %ld\n", __func__,
  50            (uintptr_t) cookie, l_name, map->l_addr, lmid);
  51
  52   struct map_desc_t *map_desc = malloc (sizeof (struct map_desc_t));
  53   if (map_desc == NULL)
  54     abort ();
  55
  56   map_desc->lname = strdup (l_name);
  57   map_desc->laddr = map->l_addr;
  58   map_desc->lmid = lmid;
  59
  60   *cookie = (uintptr_t) map_desc;
  61
  62   return 0;
  63 }
  64
  65 unsigned int
  66 la_objclose (uintptr_t *cookie)
  67 {
  68   struct map_desc_t *map_desc = (struct map_desc_t *) *cookie;
  69   fprintf (stderr, "%s: %"PRIxPTR" %s %"PRIxPTR" %ld\n", __func__,
  70            (uintptr_t) cookie, map_desc->lname, map_desc->laddr,
  71            map_desc->lmid);
  72
  73   return 0;
  74 }