xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 2004-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by David Mosberger <davidm@hpl.hp.com>, 2004. |
| 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 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <link.h> |
| 20 | #include <stddef.h> |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | |
| 24 | #define SET 0 |
| 25 | #define ADD 1 |
| 26 | #define REMOVE 2 |
| 27 | |
| 28 | #define leq(l,r) (((r) - (l)) <= ~0ULL / 2) |
| 29 | |
| 30 | static int |
| 31 | callback (struct dl_phdr_info *info, size_t size, void *ptr) |
| 32 | { |
| 33 | static int last_adds = 0, last_subs = 0; |
| 34 | intptr_t cmd = (intptr_t) ptr; |
| 35 | |
| 36 | printf (" size = %Zu\n", size); |
| 37 | if (size < (offsetof (struct dl_phdr_info, dlpi_subs) |
| 38 | + sizeof (info->dlpi_subs))) |
| 39 | { |
| 40 | fprintf (stderr, "dl_iterate_phdr failed to pass dlpi_adds/dlpi_subs\n"); |
| 41 | exit (5); |
| 42 | } |
| 43 | |
| 44 | printf (" dlpi_adds = %Lu dlpi_subs = %Lu\n", |
| 45 | info->dlpi_adds, info->dlpi_subs); |
| 46 | |
| 47 | switch (cmd) |
| 48 | { |
| 49 | case SET: |
| 50 | break; |
| 51 | |
| 52 | case ADD: |
| 53 | if (leq (info->dlpi_adds, last_adds)) |
| 54 | { |
| 55 | fprintf (stderr, "dlpi_adds failed to get incremented!\n"); |
| 56 | exit (3); |
| 57 | } |
| 58 | break; |
| 59 | |
| 60 | case REMOVE: |
| 61 | if (leq (info->dlpi_subs, last_subs)) |
| 62 | { |
| 63 | fprintf (stderr, "dlpi_subs failed to get incremented!\n"); |
| 64 | exit (4); |
| 65 | } |
| 66 | break; |
| 67 | } |
| 68 | last_adds = info->dlpi_adds; |
| 69 | last_subs = info->dlpi_subs; |
| 70 | return -1; |
| 71 | } |
| 72 | |
| 73 | static void * |
| 74 | load (const char *path) |
| 75 | { |
| 76 | void *handle; |
| 77 | |
| 78 | printf ("loading `%s'\n", path); |
| 79 | handle = dlopen (path, RTLD_LAZY); |
| 80 | if (!handle) |
| 81 | exit (1); |
| 82 | dl_iterate_phdr (callback, (void *)(intptr_t) ADD); |
| 83 | return handle; |
| 84 | } |
| 85 | |
| 86 | static void |
| 87 | unload (const char *path, void *handle) |
| 88 | { |
| 89 | printf ("unloading `%s'\n", path); |
| 90 | if (dlclose (handle) < 0) |
| 91 | exit (2); |
| 92 | dl_iterate_phdr (callback, (void *)(intptr_t) REMOVE); |
| 93 | } |
| 94 | |
| 95 | static int |
| 96 | do_test (void) |
| 97 | { |
| 98 | void *handle1, *handle2; |
| 99 | |
| 100 | dl_iterate_phdr (callback, (void *)(intptr_t) SET); |
| 101 | handle1 = load ("firstobj.so"); |
| 102 | handle2 = load ("globalmod1.so"); |
| 103 | unload ("firstobj.so", handle1); |
| 104 | unload ("globalmod1.so", handle2); |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | #define TEST_FUNCTION do_test () |
| 109 | #include "../test-skeleton.c" |