1 | /* Copyright (C) 2004-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <link.h> |
19 | #include <stddef.h> |
20 | #include <stdio.h> |
21 | #include <stdlib.h> |
22 | |
23 | #define SET 0 |
24 | #define ADD 1 |
25 | #define REMOVE 2 |
26 | |
27 | #define leq(l,r) (((r) - (l)) <= ~0ULL / 2) |
28 | |
29 | static int |
30 | callback (struct dl_phdr_info *info, size_t size, void *ptr) |
31 | { |
32 | static int last_adds = 0, last_subs = 0; |
33 | intptr_t cmd = (intptr_t) ptr; |
34 | |
35 | printf (format: " size = %zu\n" , size); |
36 | if (size < (offsetof (struct dl_phdr_info, dlpi_subs) |
37 | + sizeof (info->dlpi_subs))) |
38 | { |
39 | fprintf (stderr, format: "dl_iterate_phdr failed to pass dlpi_adds/dlpi_subs\n" ); |
40 | exit (status: 5); |
41 | } |
42 | |
43 | printf (format: " dlpi_adds = %Lu dlpi_subs = %Lu\n" , |
44 | info->dlpi_adds, info->dlpi_subs); |
45 | |
46 | switch (cmd) |
47 | { |
48 | case SET: |
49 | break; |
50 | |
51 | case ADD: |
52 | if (leq (info->dlpi_adds, last_adds)) |
53 | { |
54 | fprintf (stderr, format: "dlpi_adds failed to get incremented!\n" ); |
55 | exit (status: 3); |
56 | } |
57 | break; |
58 | |
59 | case REMOVE: |
60 | if (leq (info->dlpi_subs, last_subs)) |
61 | { |
62 | fprintf (stderr, format: "dlpi_subs failed to get incremented!\n" ); |
63 | exit (status: 4); |
64 | } |
65 | break; |
66 | } |
67 | last_adds = info->dlpi_adds; |
68 | last_subs = info->dlpi_subs; |
69 | return -1; |
70 | } |
71 | |
72 | static void * |
73 | load (const char *path) |
74 | { |
75 | void *handle; |
76 | |
77 | printf (format: "loading `%s'\n" , path); |
78 | handle = dlopen (file: path, RTLD_LAZY); |
79 | if (!handle) |
80 | exit (status: 1); |
81 | dl_iterate_phdr (callback: callback, data: (void *)(intptr_t) ADD); |
82 | return handle; |
83 | } |
84 | |
85 | static void |
86 | unload (const char *path, void *handle) |
87 | { |
88 | printf (format: "unloading `%s'\n" , path); |
89 | if (dlclose (handle: handle) < 0) |
90 | exit (status: 2); |
91 | dl_iterate_phdr (callback: callback, data: (void *)(intptr_t) REMOVE); |
92 | } |
93 | |
94 | static int |
95 | do_test (void) |
96 | { |
97 | void *handle1, *handle2; |
98 | |
99 | dl_iterate_phdr (callback: callback, data: (void *)(intptr_t) SET); |
100 | handle1 = load (path: "firstobj.so" ); |
101 | handle2 = load (path: "globalmod1.so" ); |
102 | unload (path: "firstobj.so" , handle: handle1); |
103 | unload (path: "globalmod1.so" , handle: handle2); |
104 | return 0; |
105 | } |
106 | |
107 | #include <support/test-driver.c> |
108 | |