1 /* Get loaded objects program headers.
2 Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 #include <bits/libc-lock.h>
27 cancel_handler (void *arg
__attribute__((unused
)))
29 __rtld_lock_unlock_recursive (GL(dl_load_lock
));
32 hidden_proto (__dl_iterate_phdr
)
34 __dl_iterate_phdr (int (*callback
) (struct dl_phdr_info
*info
,
35 size_t size
, void *data
), void *data
)
38 struct dl_phdr_info info
;
41 /* Make sure we are alone. */
42 __rtld_lock_lock_recursive (GL(dl_load_lock
));
43 __libc_cleanup_push (cancel_handler
, 0);
45 for (l
= GL(dl_loaded
); l
!= NULL
; l
= l
->l_next
)
47 info
.dlpi_addr
= l
->l_addr
;
48 info
.dlpi_name
= l
->l_name
;
49 info
.dlpi_phdr
= l
->l_phdr
;
50 info
.dlpi_phnum
= l
->l_phnum
;
51 info
.dlpi_adds
= GL(dl_load_adds
);
52 info
.dlpi_subs
= GL(dl_load_adds
) - GL(dl_nloaded
);
53 ret
= callback (&info
, sizeof (struct dl_phdr_info
), data
);
58 /* Release the lock. */
59 __libc_cleanup_pop (0);
60 __rtld_lock_unlock_recursive (GL(dl_load_lock
));
64 hidden_def (__dl_iterate_phdr
)
68 weak_alias (__dl_iterate_phdr
, dl_iterate_phdr
);
72 /* dl-support.c defines these and initializes them early on. */
73 extern ElfW(Phdr
) *_dl_phdr
;
74 extern size_t _dl_phnum
;
77 dl_iterate_phdr (int (*callback
) (struct dl_phdr_info
*info
,
78 size_t size
, void *data
), void *data
)
82 /* This entry describes this statically-linked program itself. */
83 struct dl_phdr_info info
;
87 info
.dlpi_phdr
= _dl_phdr
;
88 info
.dlpi_phnum
= _dl_phnum
;
89 info
.dlpi_adds
= GL(dl_load_adds
);
90 info
.dlpi_subs
= GL(dl_load_adds
) - GL(dl_nloaded
);
91 ret
= (*callback
) (&info
, sizeof (struct dl_phdr_info
), data
);
96 return __dl_iterate_phdr (callback
, data
);