1 /* Copyright (C) 1999, 2000, 2002 Red Hat, Inc.
2 This file is part of Red Hat elfutils.
3 Written by Ulrich Drepper <drepper@redhat.com>, 1999.
4
5 Red Hat elfutils is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by the
7 Free Software Foundation; version 2 of the License.
8
9 Red Hat elfutils is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along
15 with Red Hat elfutils; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
17
18 Red Hat elfutils is an included package of the Open Invention Network.
19 An included package of the Open Invention Network is a package for which
20 Open Invention Network licensees cross-license their patents. No patent
21 license is granted, either expressly or impliedly, by designation as an
22 included package. Should you wish to participate in the Open Invention
23 Network licensing program, please visit www.openinventionnetwork.com
24 <http://www.openinventionnetwork.com>. */
25
26 #include <config.h>
27
28 #include <fcntl.h>
29 #include <libelf.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <unistd.h>
33
34
35 int
main(int argc,char * argv[])36 main (int argc, char *argv[])
37 {
38 int fd;
39 FILE *fp;
40 Elf *elf;
41 Elf_Arsym *arsym;
42 size_t narsym;
43
44 if (argc < 3)
45 exit (1);
46
47 /* Open the archive. */
48 fd = open (argv[1], O_RDONLY);
49 if (fd == -1)
50 {
51 printf ("Cannot open input file: %m");
52 exit (1);
53 }
54
55 /* Open the output file. */
56 fp = fopen (argv[2], "w");
57 if (fp == NULL)
58 {
59 printf ("Cannot open output file: %m");
60 exit (1);
61 }
62
63 /* Set the ELF version. */
64 elf_version (EV_CURRENT);
65
66 /* Create an ELF descriptor. */
67 elf = elf_begin (fd, ELF_C_READ, NULL);
68 if (elf == NULL)
69 {
70 printf ("Cannot create ELF descriptor: %s\n", elf_errmsg (-1));
71 exit (1);
72 }
73
74 /* If it is no archive punt. */
75 if (elf_kind (elf) != ELF_K_AR)
76 {
77 printf ("`%s' is no archive\n", argv[1]);
78 exit (1);
79 }
80
81 /* Now get the index of the archive. */
82 arsym = elf_getarsym (elf, &narsym);
83 if (arsym == NULL)
84 {
85 printf ("Cannot get archive index: %s\n", elf_errmsg (-1));
86 exit (1);
87 }
88
89 /* If there is no element in the index do nothing. There always is
90 an empty entry at the end which is included in the count and
91 which we want to skip. */
92 if (narsym-- > 1)
93 while (narsym-- > 0)
94 {
95 Elf *subelf;
96 Elf_Arhdr *arhdr;
97
98 if (elf_rand (elf, arsym[narsym].as_off) != arsym[narsym].as_off)
99 {
100 printf ("random access for symbol `%s' fails: %s\n",
101 arsym[narsym].as_name, elf_errmsg (-1));
102 exit (1);
103 }
104
105 subelf = elf_begin (fd, ELF_C_READ, elf);
106 if (subelf == NULL)
107 {
108 printf ("Cannot create ELF descriptor for archive member: %s\n",
109 elf_errmsg (-1));
110 exit (1);
111 }
112
113 arhdr = elf_getarhdr (subelf);
114 if (arhdr == NULL)
115 {
116 printf ("Cannot get archive header for element `%s': %s\n",
117 arsym[narsym].as_name, elf_errmsg (-1));
118 exit (1);
119 }
120
121 /* Now print what we actually want. */
122 fprintf (fp, "%s in %s\n", arsym[narsym].as_name, arhdr->ar_name);
123
124 /* Free the ELF descriptor. */
125 if (elf_end (subelf) != 0)
126 {
127 printf ("Error while freeing subELF descriptor: %s\n",
128 elf_errmsg (-1));
129 exit (1);
130 }
131 }
132
133 /* Free the ELF descriptor. */
134 if (elf_end (elf) != 0)
135 {
136 printf ("Error while freeing ELF descriptor: %s\n", elf_errmsg (-1));
137 exit (1);
138 }
139
140 close (fd);
141 fclose (fp);
142
143 return 0;
144 }
145