blob: 6bb49b687c9791a379317343d6597d996fa72402 (
plain)
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
|
#include <linux/elf.h>
#include <linux/coredump.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <asm/elf.h>
Elf32_Half elf_core_extra_phdrs(void)
{
return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0;
}
int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
unsigned long limit)
{
if ( vsyscall_ehdr ) {
const struct elfhdr *const ehdrp =
(struct elfhdr *) vsyscall_ehdr;
const struct elf_phdr *const phdrp =
(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
int i;
Elf32_Off ofs = 0;
for (i = 0; i < ehdrp->e_phnum; ++i) {
struct elf_phdr phdr = phdrp[i];
if (phdr.p_type == PT_LOAD) {
ofs = phdr.p_offset = offset;
offset += phdr.p_filesz;
} else {
phdr.p_offset += ofs;
}
phdr.p_paddr = 0; /* match other core phdrs */
*size += sizeof(phdr);
if (*size > limit
|| !dump_write(file, &phdr, sizeof(phdr)))
return 0;
}
}
return 1;
}
int elf_core_write_extra_data(struct file *file, size_t *size,
unsigned long limit)
{
if ( vsyscall_ehdr ) {
const struct elfhdr *const ehdrp =
(struct elfhdr *) vsyscall_ehdr;
const struct elf_phdr *const phdrp =
(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
int i;
for (i = 0; i < ehdrp->e_phnum; ++i) {
if (phdrp[i].p_type == PT_LOAD) {
void *addr = (void *) phdrp[i].p_vaddr;
size_t filesz = phdrp[i].p_filesz;
*size += filesz;
if (*size > limit
|| !dump_write(file, addr, filesz))
return 0;
}
}
}
return 1;
}
size_t elf_core_extra_data_size(void)
{
if ( vsyscall_ehdr ) {
const struct elfhdr *const ehdrp =
(struct elfhdr *)vsyscall_ehdr;
const struct elf_phdr *const phdrp =
(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
int i;
for (i = 0; i < ehdrp->e_phnum; ++i)
if (phdrp[i].p_type == PT_LOAD)
return (size_t) phdrp[i].p_filesz;
}
return 0;
}
|
