Pileus Git - ~andy/linux/blob - arch/ia64/kernel/elfcore.c

   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
  14 int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
  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 */
  37                 if (!dump_emit(cprm, &phdr, sizeof(phdr)))
  38                         return 0;
  39         }
  40         return 1;
  41 }
  42
  43 int elf_core_write_extra_data(struct file *file, size_t *size,
  44                               unsigned long limit)
  45 {
  46         const struct elf_phdr *const gate_phdrs =
  47                 (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
  48         int i;
  49
  50         for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
  51                 if (gate_phdrs[i].p_type == PT_LOAD) {
  52                         void *addr = (void *)gate_phdrs[i].p_vaddr;
  53                         size_t memsz = PAGE_ALIGN(gate_phdrs[i].p_memsz);
  54
  55                         *size += memsz;
  56                         if (*size > limit || !dump_write(file, addr, memsz))
  57                                 return 0;
  58                         break;
  59                 }
  60         }
  61         return 1;
  62 }
  63
  64 size_t elf_core_extra_data_size(void)
  65 {
  66         const struct elf_phdr *const gate_phdrs =
  67                 (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
  68         int i;
  69         size_t size = 0;
  70
  71         for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
  72                 if (gate_phdrs[i].p_type == PT_LOAD) {
  73                         size += PAGE_ALIGN(gate_phdrs[i].p_memsz);
  74                         break;
  75                 }
  76         }
  77         return size;
  78 }