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 | Elf64_Half elf_core_extra_phdrs(void) | |
10 | { | |
11 | return GATE_EHDR->e_phnum; | |
12 | } | |
13 | ||
506f21c5 | 14 | int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset) |
1fcccbac DH |
15 | { |
16 | const struct elf_phdr *const gate_phdrs = | |
17 | (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); | |
18 | int i; | |
19 | Elf64_Off ofs = 0; | |
20 | ||
21 | for (i = 0; i < GATE_EHDR->e_phnum; ++i) { | |
22 | struct elf_phdr phdr = gate_phdrs[i]; | |
23 | ||
24 | if (phdr.p_type == PT_LOAD) { | |
25 | phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz); | |
26 | phdr.p_filesz = phdr.p_memsz; | |
27 | if (ofs == 0) { | |
28 | ofs = phdr.p_offset = offset; | |
29 | offset += phdr.p_filesz; | |
30 | } else { | |
31 | phdr.p_offset = ofs; | |
32 | } | |
33 | } else { | |
34 | phdr.p_offset += ofs; | |
35 | } | |
36 | phdr.p_paddr = 0; /* match other core phdrs */ | |
506f21c5 | 37 | if (!dump_emit(cprm, &phdr, sizeof(phdr))) |
1fcccbac DH |
38 | return 0; |
39 | } | |
40 | return 1; | |
41 | } | |
42 | ||
aa3e7eaf | 43 | int elf_core_write_extra_data(struct coredump_params *cprm) |
1fcccbac DH |
44 | { |
45 | const struct elf_phdr *const gate_phdrs = | |
46 | (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); | |
47 | int i; | |
48 | ||
49 | for (i = 0; i < GATE_EHDR->e_phnum; ++i) { | |
50 | if (gate_phdrs[i].p_type == PT_LOAD) { | |
51 | void *addr = (void *)gate_phdrs[i].p_vaddr; | |
52 | size_t memsz = PAGE_ALIGN(gate_phdrs[i].p_memsz); | |
53 | ||
aa3e7eaf | 54 | if (!dump_emit(cprm, addr, memsz)) |
1fcccbac DH |
55 | return 0; |
56 | break; | |
57 | } | |
58 | } | |
59 | return 1; | |
60 | } | |
8d9032bb DH |
61 | |
62 | size_t elf_core_extra_data_size(void) | |
63 | { | |
64 | const struct elf_phdr *const gate_phdrs = | |
65 | (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); | |
66 | int i; | |
67 | size_t size = 0; | |
68 | ||
69 | for (i = 0; i < GATE_EHDR->e_phnum; ++i) { | |
70 | if (gate_phdrs[i].p_type == PT_LOAD) { | |
71 | size += PAGE_ALIGN(gate_phdrs[i].p_memsz); | |
72 | break; | |
73 | } | |
74 | } | |
75 | return size; | |
76 | } |