swh:1:snp:173f8deb0c56c557784b4fd217e7608ac6197844
Tip revision: c1be5a5b1b355d40e6cf79cc979eb66dafa24ad1 authored by Linus Torvalds on 29 April 2013, 00:36:01 UTC
Linux 3.9
Linux 3.9
Tip revision: c1be5a5
elfcore.c
#include <linux/elf.h>
#include <linux/coredump.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <asm/elf.h>
Elf64_Half elf_core_extra_phdrs(void)
{
return GATE_EHDR->e_phnum;
}
int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
unsigned long limit)
{
const struct elf_phdr *const gate_phdrs =
(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
int i;
Elf64_Off ofs = 0;
for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
struct elf_phdr phdr = gate_phdrs[i];
if (phdr.p_type == PT_LOAD) {
phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz);
phdr.p_filesz = phdr.p_memsz;
if (ofs == 0) {
ofs = phdr.p_offset = offset;
offset += phdr.p_filesz;
} else {
phdr.p_offset = ofs;
}
} 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)
{
const struct elf_phdr *const gate_phdrs =
(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
int i;
for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
if (gate_phdrs[i].p_type == PT_LOAD) {
void *addr = (void *)gate_phdrs[i].p_vaddr;
size_t memsz = PAGE_ALIGN(gate_phdrs[i].p_memsz);
*size += memsz;
if (*size > limit || !dump_write(file, addr, memsz))
return 0;
break;
}
}
return 1;
}
size_t elf_core_extra_data_size(void)
{
const struct elf_phdr *const gate_phdrs =
(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
int i;
size_t size = 0;
for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
if (gate_phdrs[i].p_type == PT_LOAD) {
size += PAGE_ALIGN(gate_phdrs[i].p_memsz);
break;
}
}
return size;
}