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 coredump_params *cprm, loff_t offset) 15 { 16 if ( vsyscall_ehdr ) { 17 const struct elfhdr *const ehdrp = 18 (struct elfhdr *) vsyscall_ehdr; 19 const struct elf_phdr *const phdrp = 20 (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); 21 int i; 22 Elf32_Off ofs = 0; 23 24 for (i = 0; i < ehdrp->e_phnum; ++i) { 25 struct elf_phdr phdr = phdrp[i]; 26 27 if (phdr.p_type == PT_LOAD) { 28 ofs = phdr.p_offset = offset; 29 offset += phdr.p_filesz; 30 } else { 31 phdr.p_offset += ofs; 32 } 33 phdr.p_paddr = 0; /* match other core phdrs */ 34 if (!dump_emit(cprm, &phdr, sizeof(phdr))) 35 return 0; 36 } 37 } 38 return 1; 39 } 40 41 int elf_core_write_extra_data(struct coredump_params *cprm) 42 { 43 if ( vsyscall_ehdr ) { 44 const struct elfhdr *const ehdrp = 45 (struct elfhdr *) vsyscall_ehdr; 46 const struct elf_phdr *const phdrp = 47 (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); 48 int i; 49 50 for (i = 0; i < ehdrp->e_phnum; ++i) { 51 if (phdrp[i].p_type == PT_LOAD) { 52 void *addr = (void *) phdrp[i].p_vaddr; 53 size_t filesz = phdrp[i].p_filesz; 54 if (!dump_emit(cprm, addr, filesz)) 55 return 0; 56 } 57 } 58 } 59 return 1; 60 } 61 62 size_t elf_core_extra_data_size(void) 63 { 64 if ( vsyscall_ehdr ) { 65 const struct elfhdr *const ehdrp = 66 (struct elfhdr *)vsyscall_ehdr; 67 const struct elf_phdr *const phdrp = 68 (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); 69 int i; 70 71 for (i = 0; i < ehdrp->e_phnum; ++i) 72 if (phdrp[i].p_type == PT_LOAD) 73 return (size_t) phdrp[i].p_filesz; 74 } 75 return 0; 76 } 77