Warning: That file was not part of the compilation database. It may have many parsing errors.

1/* Copyright (C) 2004-2019 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
30static int
31callback (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
73static void *
74load (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
86static void
87unload (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
95static int
96do_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#include <support/test-driver.c>
109

Warning: That file was not part of the compilation database. It may have many parsing errors.