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77 lines
1.7 KiB
77 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/elf.h> |
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#include <linux/coredump.h> |
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#include <linux/fs.h> |
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#include <linux/mm.h> |
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#include <asm/elf.h> |
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Elf64_Half elf_core_extra_phdrs(void) |
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{ |
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return GATE_EHDR->e_phnum; |
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} |
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int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset) |
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{ |
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const struct elf_phdr *const gate_phdrs = |
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(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); |
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int i; |
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Elf64_Off ofs = 0; |
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for (i = 0; i < GATE_EHDR->e_phnum; ++i) { |
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struct elf_phdr phdr = gate_phdrs[i]; |
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if (phdr.p_type == PT_LOAD) { |
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phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz); |
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phdr.p_filesz = phdr.p_memsz; |
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if (ofs == 0) { |
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ofs = phdr.p_offset = offset; |
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offset += phdr.p_filesz; |
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} else { |
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phdr.p_offset = ofs; |
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} |
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} else { |
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phdr.p_offset += ofs; |
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} |
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phdr.p_paddr = 0; /* match other core phdrs */ |
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if (!dump_emit(cprm, &phdr, sizeof(phdr))) |
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return 0; |
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} |
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return 1; |
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} |
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int elf_core_write_extra_data(struct coredump_params *cprm) |
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{ |
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const struct elf_phdr *const gate_phdrs = |
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(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); |
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int i; |
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for (i = 0; i < GATE_EHDR->e_phnum; ++i) { |
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if (gate_phdrs[i].p_type == PT_LOAD) { |
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void *addr = (void *)gate_phdrs[i].p_vaddr; |
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size_t memsz = PAGE_ALIGN(gate_phdrs[i].p_memsz); |
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if (!dump_emit(cprm, addr, memsz)) |
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return 0; |
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break; |
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} |
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} |
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return 1; |
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} |
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size_t elf_core_extra_data_size(void) |
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{ |
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const struct elf_phdr *const gate_phdrs = |
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(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); |
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int i; |
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size_t size = 0; |
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for (i = 0; i < GATE_EHDR->e_phnum; ++i) { |
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if (gate_phdrs[i].p_type == PT_LOAD) { |
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size += PAGE_ALIGN(gate_phdrs[i].p_memsz); |
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break; |
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} |
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} |
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return size; |
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}
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