1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*-
* Copyright (c) 2016 Kai Wang
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <errno.h>
#include "_libpe.h"
ELFTC_VCSID("$Id: pe_symtab.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
int
pe_update_symtab(PE *pe, char *symtab, size_t sz, unsigned int nsym)
{
PE_Scn *ps;
PE_SecBuf *sb;
PE_SecHdr *sh;
if (pe == NULL || symtab == NULL || sz == 0) {
errno = EINVAL;
return (-1);
}
if (pe->pe_cmd == PE_C_READ || pe->pe_flags & LIBPE_F_FD_DONE) {
errno = EACCES;
return (-1);
}
/* Remove the old symbol table. */
STAILQ_FOREACH(ps, &pe->pe_scn, ps_next) {
if (ps->ps_ndx == 0xFFFFFFFFU)
libpe_release_scn(ps);
}
/*
* Insert the new symbol table.
*/
if ((ps = libpe_alloc_scn(pe)) == NULL)
return (-1);
STAILQ_INSERT_TAIL(&pe->pe_scn, ps, ps_next);
ps->ps_ndx = 0xFFFFFFFFU;
ps->ps_flags |= PE_F_DIRTY;
/*
* Set the symbol table section offset to the maximum to make sure
* that it will be placed in the end of the file during section
* layout.
*/
sh = &ps->ps_sh;
sh->sh_rawptr = 0xFFFFFFFFU;
sh->sh_rawsize = sz;
/* Allocate the buffer. */
if ((sb = libpe_alloc_buffer(ps, 0)) == NULL)
return (-1);
sb->sb_flags |= PE_F_DIRTY;
sb->sb_pb.pb_size = sz;
sb->sb_pb.pb_buf = symtab;
pe->pe_nsym = nsym;
return (0);
}
|
