diff options
Diffstat (limited to 'fs/binfmt_elf.c')
| -rw-r--r-- | fs/binfmt_elf.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 67be2951b98..3892c1a2324 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -46,10 +46,15 @@ #endif static int load_elf_binary(struct linux_binprm *bprm); -static int load_elf_library(struct file *); static unsigned long elf_map(struct file *, unsigned long, struct elf_phdr *, int, int, unsigned long); +#ifdef CONFIG_USELIB +static int load_elf_library(struct file *); +#else +#define load_elf_library NULL +#endif + /* * If we don't support core dumping, then supply a NULL so we * don't even try. @@ -579,7 +584,6 @@ static int load_elf_binary(struct linux_binprm *bprm) unsigned long start_code, end_code, start_data, end_data; unsigned long reloc_func_desc __maybe_unused = 0; int executable_stack = EXSTACK_DEFAULT; - unsigned long def_flags = 0; struct pt_regs *regs = current_pt_regs(); struct { struct elfhdr elf_ex; @@ -719,9 +723,6 @@ static int load_elf_binary(struct linux_binprm *bprm) if (retval) goto out_free_dentry; - /* OK, This is the point of no return */ - current->mm->def_flags = def_flags; - /* Do this immediately, since STACK_TOP as used in setup_arg_pages may depend on the personality. */ SET_PERSONALITY(loc->elf_ex); @@ -1005,6 +1006,7 @@ out_free_ph: goto out; } +#ifdef CONFIG_USELIB /* This is really simpleminded and specialized - we are loading an a.out library that is given an ELF header. */ static int load_elf_library(struct file *file) @@ -1083,6 +1085,7 @@ out_free_ph: out: return error; } +#endif /* #ifdef CONFIG_USELIB */ #ifdef CONFIG_ELF_CORE /* @@ -1105,6 +1108,14 @@ static bool always_dump_vma(struct vm_area_struct *vma) /* Any vsyscall mappings? */ if (vma == get_gate_vma(vma->vm_mm)) return true; + + /* + * Assume that all vmas with a .name op should always be dumped. + * If this changes, a new vm_ops field can easily be added. + */ + if (vma->vm_ops && vma->vm_ops->name && vma->vm_ops->name(vma)) + return true; + /* * arch_vma_name() returns non-NULL for special architecture mappings, * such as vDSO sections. @@ -1683,7 +1694,7 @@ static size_t get_note_info_size(struct elf_note_info *info) static int write_note_info(struct elf_note_info *info, struct coredump_params *cprm) { - bool first = 1; + bool first = true; struct elf_thread_core_info *t = info->thread; do { @@ -1707,7 +1718,7 @@ static int write_note_info(struct elf_note_info *info, !writenote(&t->notes[i], cprm)) return 0; - first = 0; + first = false; t = t->next; } while (t); |