linux.git/fs/binfmt_elf.c, branch v3.17

Merge branch 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

2014-06-05T15:05:29+00:00

Pull x86 cdso updates from Peter Anvin:
 "Vdso cleanups and improvements largely from Andy Lutomirski.  This
  makes the vdso a lot less ''special''"

* 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vdso, build: Make LE access macros clearer, host-safe
  x86/vdso, build: Fix cross-compilation from big-endian architectures
  x86/vdso, build: When vdso2c fails, unlink the output
  x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET
  x86, mm: Replace arch_vma_name with vm_ops->name for vsyscalls
  x86, mm: Improve _install_special_mapping and fix x86 vdso naming
  mm, fs: Add vm_ops->name as an alternative to arch_vma_name
  x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET
  x86, vdso: Remove vestiges of VDSO_PRELINK and some outdated comments
  x86, vdso: Move the vvar and hpet mappings next to the 64-bit vDSO
  x86, vdso: Move the 32-bit vdso special pages after the text
  x86, vdso: Reimplement vdso.so preparation in build-time C
  x86, vdso: Move syscall and sysenter setup into kernel/cpu/common.c
  x86, vdso: Clean up 32-bit vs 64-bit vdso params
  x86, mm: Ensure correct alignment of the fixmap

fs/binfmt_elf.c: fix bool assignements

2014-06-04T23:54:21+00:00

Fix coccinelle warnings.

Signed-off-by: Fabian Frederick 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm, fs: Add vm_ops->name as an alternative to arch_vma_name

2014-05-20T18:36:31+00:00

arch_vma_name sucks.  It's a silly hack, and it's annoying to
implement correctly.  In fact, AFAICS, even the straightforward x86
implementation is incorrect (I suspect that it breaks if the vdso
mapping is split or gets remapped).

This adds a new vm_ops->name operation that can replace it.  The
followup patches will remove all uses of arch_vma_name on x86,
fixing a couple of annoyances in the process.

Signed-off-by: Andy Lutomirski 
Link: http://lkml.kernel.org/r/2eee21791bb36a0a408c5c2bdb382a9e6a41ca4a.1400538962.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin

exec: kill the unnecessary mm->def_flags setting in load_elf_binary()

2014-04-07T23:35:52+00:00

load_elf_binary() sets current->mm->def_flags = def_flags and def_flags
is always zero.  Not only this looks strange, this is unnecessary
because mm_init() has already set ->def_flags = 0.

Signed-off-by: Alex Thorlton 
Suggested-by: Oleg Nesterov 
Cc: Gerald Schaefer 
Cc: Martin Schwidefsky 
Cc: Heiko Carstens 
Cc: Christian Borntraeger 
Cc: Paolo Bonzini 
Cc: "Kirill A. Shutemov" 
Cc: Mel Gorman 
Acked-by: Rik van Riel 
Cc: Ingo Molnar 
Cc: Peter Zijlstra 
Cc: Andrea Arcangeli 
Cc: Oleg Nesterov 
Cc: "Eric W. Biederman" 
Cc: Alexander Viro 
Cc: Johannes Weiner 
Cc: David Rientjes 
Cc: Paolo Bonzini 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs, kernel: permit disabling the uselib syscall

2014-04-03T23:21:05+00:00

uselib hasn't been used since libc5; glibc does not use it.  Support
turning it off.

When disabled, also omit the load_elf_library implementation from
binfmt_elf.c, which only uselib invokes.

bloat-o-meter:
add/remove: 0/4 grow/shrink: 0/1 up/down: 0/-785 (-785)
function                                     old     new   delta
padzero                                       39      36      -3
uselib_flags                                  20       -     -20
sys_uselib                                   168       -    -168
SyS_uselib                                   168       -    -168
load_elf_library                             426       -    -426

The new CONFIG_USELIB defaults to `y'.

Signed-off-by: Josh Triplett 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs: binfmt_elf: remove unused defines INTERPRETER_NONE and INTERPRETER_ELF

2014-01-24T00:36:58+00:00

These two defines are unused since the removal of the a.out interpreter
support in the ELF loader in kernel 2.6.25

Signed-off-by: Todor Minchev 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

elf{,_fdpic} coredump: get rid of pointless if (siginfo->si_signo)

2013-11-09T05:16:30+00:00

we can't get to do_coredump() if that condition isn't satisfied...

Signed-off-by: Al Viro

constify do_coredump() argument

2013-11-09T05:16:29+00:00

Signed-off-by: Al Viro

constify copy_siginfo_to_user{,32}()

2013-11-09T05:16:29+00:00

Signed-off-by: Al Viro

new helper: dump_align()

2013-11-09T05:16:27+00:00

dump_skip to given alignment...

Signed-off-by: Al Viro