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1cb2ecf162
switch statement does not work for intptr_t, use a large int type that's guaranteed to work.
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/* Copyright (C) 2004-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <link.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define SET 0
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#define ADD 1
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#define REMOVE 2
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#define leq(l,r) (((r) - (l)) <= ~0ULL / 2)
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static int
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callback (struct dl_phdr_info *info, size_t size, void *ptr)
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{
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static int last_adds = 0, last_subs = 0;
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unsigned long cmd = (intptr_t) ptr;
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printf (" size = %Zu\n", size);
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if (size < (offsetof (struct dl_phdr_info, dlpi_subs)
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+ sizeof (info->dlpi_subs)))
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{
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fprintf (stderr, "dl_iterate_phdr failed to pass dlpi_adds/dlpi_subs\n");
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exit (5);
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}
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printf (" dlpi_adds = %Lu dlpi_subs = %Lu\n",
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info->dlpi_adds, info->dlpi_subs);
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switch (cmd)
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{
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case SET:
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break;
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case ADD:
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if (leq (info->dlpi_adds, last_adds))
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{
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fprintf (stderr, "dlpi_adds failed to get incremented!\n");
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exit (3);
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}
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break;
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case REMOVE:
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if (leq (info->dlpi_subs, last_subs))
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{
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fprintf (stderr, "dlpi_subs failed to get incremented!\n");
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exit (4);
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}
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break;
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}
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last_adds = info->dlpi_adds;
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last_subs = info->dlpi_subs;
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return -1;
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}
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static void *
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load (const char *path)
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{
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void *handle;
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printf ("loading `%s'\n", path);
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handle = dlopen (path, RTLD_LAZY);
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if (!handle)
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exit (1);
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dl_iterate_phdr (callback, (void *)(intptr_t) ADD);
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return handle;
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}
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static void
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unload (const char *path, void *handle)
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{
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printf ("unloading `%s'\n", path);
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if (dlclose (handle) < 0)
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exit (2);
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dl_iterate_phdr (callback, (void *)(intptr_t) REMOVE);
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}
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static int
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do_test (void)
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{
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void *handle1, *handle2;
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dl_iterate_phdr (callback, (void *)(intptr_t) SET);
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handle1 = load ("firstobj.so");
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handle2 = load ("globalmod1.so");
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unload ("firstobj.so", handle1);
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unload ("globalmod1.so", handle2);
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return 0;
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}
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#include <support/test-driver.c>
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