linux.git/fs/binfmt_elf.c, branch v3.15

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

dump_skip(): dump_seek() replacement taking coredump_params

2013-11-09T05:16:26+00:00

Signed-off-by: Al Viro

binfmt_elf: count notes towards coredump limit

2013-11-09T05:16:25+00:00

Signed-off-by: Al Viro

switch elf_coredump_extra_notes_write() to dump_emit()

2013-11-09T05:16:24+00:00

Signed-off-by: Al Viro