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// SPDX-License-Identifier: GPL-2.0
#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(struct coredump_params *cprm)
{
return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0;
}
int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
{
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 */
if (!dump_emit(cprm, &phdr, sizeof(phdr)))
return 0;
}
}
return 1;
}
int elf_core_write_extra_data(struct coredump_params *cprm)
{
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;
if (!dump_emit(cprm, addr, filesz))
return 0;
}
}
}
return 1;
}
size_t elf_core_extra_data_size(struct coredump_params *cprm)
{
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;
}
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