Commit | Line | Data |
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1fcccbac DH |
1 | #include <linux/elf.h> |
2 | #include <linux/coredump.h> | |
3 | #include <linux/fs.h> | |
4 | #include <linux/mm.h> | |
5 | ||
6 | #include <asm/elf.h> | |
7 | ||
8 | ||
9 | Elf32_Half elf_core_extra_phdrs(void) | |
10 | { | |
11 | return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0; | |
12 | } | |
13 | ||
14 | int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size, | |
15 | unsigned long limit) | |
16 | { | |
17 | if ( vsyscall_ehdr ) { | |
18 | const struct elfhdr *const ehdrp = | |
19 | (struct elfhdr *) vsyscall_ehdr; | |
20 | const struct elf_phdr *const phdrp = | |
21 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); | |
22 | int i; | |
23 | Elf32_Off ofs = 0; | |
24 | ||
25 | for (i = 0; i < ehdrp->e_phnum; ++i) { | |
26 | struct elf_phdr phdr = phdrp[i]; | |
27 | ||
28 | if (phdr.p_type == PT_LOAD) { | |
29 | ofs = phdr.p_offset = offset; | |
30 | offset += phdr.p_filesz; | |
31 | } else { | |
32 | phdr.p_offset += ofs; | |
33 | } | |
34 | phdr.p_paddr = 0; /* match other core phdrs */ | |
35 | *size += sizeof(phdr); | |
36 | if (*size > limit | |
37 | || !dump_write(file, &phdr, sizeof(phdr))) | |
38 | return 0; | |
39 | } | |
40 | } | |
41 | return 1; | |
42 | } | |
43 | ||
44 | int elf_core_write_extra_data(struct file *file, size_t *size, | |
45 | unsigned long limit) | |
46 | { | |
47 | if ( vsyscall_ehdr ) { | |
48 | const struct elfhdr *const ehdrp = | |
49 | (struct elfhdr *) vsyscall_ehdr; | |
50 | const struct elf_phdr *const phdrp = | |
51 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); | |
52 | int i; | |
53 | ||
54 | for (i = 0; i < ehdrp->e_phnum; ++i) { | |
55 | if (phdrp[i].p_type == PT_LOAD) { | |
56 | void *addr = (void *) phdrp[i].p_vaddr; | |
57 | size_t filesz = phdrp[i].p_filesz; | |
58 | ||
59 | *size += filesz; | |
60 | if (*size > limit | |
61 | || !dump_write(file, addr, filesz)) | |
62 | return 0; | |
63 | } | |
64 | } | |
65 | } | |
66 | return 1; | |
67 | } | |
8d9032bb DH |
68 | |
69 | size_t elf_core_extra_data_size(void) | |
70 | { | |
71 | if ( vsyscall_ehdr ) { | |
72 | const struct elfhdr *const ehdrp = | |
73 | (struct elfhdr *)vsyscall_ehdr; | |
74 | const struct elf_phdr *const phdrp = | |
75 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); | |
76 | int i; | |
77 | ||
78 | for (i = 0; i < ehdrp->e_phnum; ++i) | |
79 | if (phdrp[i].p_type == PT_LOAD) | |
80 | return (size_t) phdrp[i].p_filesz; | |
81 | } | |
82 | return 0; | |
83 | } |