1 /*
2 * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef _SALIBELF_H_
26 #define _SALIBELF_H_
27
28 #include <elf.h>
29 #include "elfmacros.h"
30 #include "libproc_impl.h"
31
32 // read ELF file header.
33 int read_elf_header(int fd, ELF_EHDR* ehdr);
34
35 // is given file descriptor corresponds to an ELF file?
36 bool is_elf_file(int fd);
37
38 // read program header table of an ELF file. caller has to
39 // free the result pointer after use. NULL on failure.
40 ELF_PHDR* read_program_header_table(int fd, ELF_EHDR* hdr);
41
42 // read section header table of an ELF file. caller has to
43 // free the result pointer after use. NULL on failure.
44 ELF_SHDR* read_section_header_table(int fd, ELF_EHDR* hdr);
45
46 // read a particular section's data. caller has to free the
47 // result pointer after use. NULL on failure.
48 void* read_section_data(int fd, ELF_EHDR* ehdr, ELF_SHDR* shdr);
49
50 // find the base address at which the library wants to load itself
51 uintptr_t find_base_address(int fd, ELF_EHDR* ehdr);
52 #endif /* _SALIBELF_H_ */
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1 /*
2 * Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef _SALIBELF_H_
26 #define _SALIBELF_H_
27
28 #include <elf.h>
29 #include "elfmacros.h"
30 #include "libproc_impl.h"
31
32 struct elf_section {
33 ELF_SHDR *c_shdr;
34 void *c_data;
35 };
36
37 // read ELF file header.
38 int read_elf_header(int fd, ELF_EHDR* ehdr);
39
40 // is given file descriptor corresponds to an ELF file?
41 bool is_elf_file(int fd);
42
43 // read program header table of an ELF file. caller has to
44 // free the result pointer after use. NULL on failure.
45 ELF_PHDR* read_program_header_table(int fd, ELF_EHDR* hdr);
46
47 // read section header table of an ELF file. caller has to
48 // free the result pointer after use. NULL on failure.
49 ELF_SHDR* read_section_header_table(int fd, ELF_EHDR* hdr);
50
51 // read a particular section's data. caller has to free the
52 // result pointer after use. NULL on failure.
53 void* read_section_data(int fd, ELF_EHDR* ehdr, ELF_SHDR* shdr);
54
55 // find the base address at which the library wants to load itself
56 uintptr_t find_base_address(int fd, ELF_EHDR* ehdr);
57
58 // Find an ELF section.
59 struct elf_section *find_section_by_name(char *name,
60 int fd,
61 ELF_EHDR *ehdr,
62 struct elf_section *scn_cache);
63 #endif /* _SALIBELF_H_ */
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