Annotation of src/usr.bin/file/elfclass.h, Revision 1.2
1.2 ! chl 1: /* $OpenBSD$ */
1.1 chl 2: /*
3: * Copyright (c) Christos Zoulas 2008.
4: * All Rights Reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice immediately at the beginning of the file, without modification,
11: * this list of conditions, and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26: * SUCH DAMAGE.
27: */
28: if (nbytes <= sizeof(elfhdr))
29: return 0;
30:
31: u.l = 1;
32: (void)memcpy(&elfhdr, buf, sizeof elfhdr);
33: swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA];
34:
35: type = elf_getu16(swap, elfhdr.e_type);
36: switch (type) {
37: #ifdef ELFCORE
38: case ET_CORE:
39: if (dophn_core(ms, class, swap, fd,
40: (off_t)elf_getu(swap, elfhdr.e_phoff),
41: elf_getu16(swap, elfhdr.e_phnum),
42: (size_t)elf_getu16(swap, elfhdr.e_phentsize),
43: fsize, &flags) == -1)
44: return -1;
45: break;
46: #endif
47: case ET_EXEC:
48: case ET_DYN:
49: if (dophn_exec(ms, class, swap, fd,
50: (off_t)elf_getu(swap, elfhdr.e_phoff),
51: elf_getu16(swap, elfhdr.e_phnum),
52: (size_t)elf_getu16(swap, elfhdr.e_phentsize),
53: fsize, &flags) == -1)
54: return -1;
55: /*FALLTHROUGH*/
56: case ET_REL:
57: if (doshn(ms, class, swap, fd,
58: (off_t)elf_getu(swap, elfhdr.e_shoff),
59: elf_getu16(swap, elfhdr.e_shnum),
60: (size_t)elf_getu16(swap, elfhdr.e_shentsize),
61: &flags) == -1)
62: return -1;
63: break;
64:
65: default:
66: break;
67: }
68: return 1;