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binfmt_elf: cleanups 

This cleans up a few bits in binfmt_elf.c and binfmts.h:

- the hasvdso field in struct linux_binfmt is unused, so remove it and
  the only initialization of it

- the elf_map CPP symbol is not defined anywhere in the kernel, so
  remove an unnecessary #ifndef elf_map

- reduce excessive indentation in elf_format's initializer

- add missing spaces, remove extraneous spaces

No functional changes, but tested on x86 (32 and 64 bit), powerpc (32 and
64 bit), sparc64, arm, and alpha.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mikael Pettersson 2011-01-12 17:00:02 -08:00 committed by Linus Torvalds
parent 52bd19f769
commit f670d0ecda
2 changed files with 11 additions and 17 deletions
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23
fs/binfmt_elf.c
View File

@ -66,12 +66,11 @@ static int elf_core_dump(struct coredump_params *cprm);
#define ELF_PAGEALIGN(_v) (((_v) + ELF_MIN_ALIGN - 1) & ~(ELF_MIN_ALIGN - 1))
static struct linux_binfmt elf_format = {
.module = THIS_MODULE,
.load_binary = load_elf_binary,
.load_shlib = load_elf_library,
.core_dump = elf_core_dump,
.min_coredump = ELF_EXEC_PAGESIZE,
.hasvdso = 1
.module = THIS_MODULE,
.load_binary = load_elf_binary,
.load_shlib = load_elf_library,
.core_dump = elf_core_dump,
.min_coredump = ELF_EXEC_PAGESIZE,
};
#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE)
@ -316,8 +315,6 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
return 0;
}
#ifndef elf_map
static unsigned long elf_map(struct file *filep, unsigned long addr,
struct elf_phdr *eppnt, int prot, int type,
unsigned long total_size)
@ -354,8 +351,6 @@ static unsigned long elf_map(struct file *filep, unsigned long addr,
return(map_addr);
}
#endif /* !elf_map */
static unsigned long total_mapping_size(struct elf_phdr *cmds, int nr)
{
int i, first_idx = -1, last_idx = -1;
@ -421,7 +416,7 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
goto out;
retval = kernel_read(interpreter, interp_elf_ex->e_phoff,
(char *)elf_phdata,size);
(char *)elf_phdata, size);
error = -EIO;
if (retval != size) {
if (retval < 0)
@ -601,7 +596,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
goto out;
if (!elf_check_arch(&loc->elf_ex))
goto out;
if (!bprm->file->f_op||!bprm->file->f_op->mmap)
if (!bprm->file->f_op || !bprm->file->f_op->mmap)
goto out;
/* Now read in all of the header information */
@ -761,8 +756,8 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
/* There was a PT_LOAD segment with p_memsz > p_filesz
before this one. Map anonymous pages, if needed,
and clear the area. */
retval = set_brk (elf_bss + load_bias,
elf_brk + load_bias);
retval = set_brk(elf_bss + load_bias,
elf_brk + load_bias);
if (retval) {
send_sig(SIGKILL, current, 0);
goto out_free_dentry;

5
include/linux/binfmts.h
View File

@ -25,7 +25,7 @@ struct pt_regs;
/*
* This structure is used to hold the arguments that are used when loading binaries.
*/
struct linux_binprm{
struct linux_binprm {
char buf[BINPRM_BUF_SIZE];
#ifdef CONFIG_MMU
struct vm_area_struct *vma;
@ -93,7 +93,6 @@ struct linux_binfmt {
int (*load_shlib)(struct file *);
int (*core_dump)(struct coredump_params *cprm);
unsigned long min_coredump; /* minimal dump size */
int hasvdso;
};
extern int __register_binfmt(struct linux_binfmt *fmt, int insert);
@ -113,7 +112,7 @@ extern void unregister_binfmt(struct linux_binfmt *);
extern int prepare_binprm(struct linux_binprm *);
extern int __must_check remove_arg_zero(struct linux_binprm *);
extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
extern int search_binary_handler(struct linux_binprm *, struct pt_regs *);
extern int flush_old_exec(struct linux_binprm * bprm);
extern void setup_new_exec(struct linux_binprm * bprm);