lkml.org 
[lkml]   [2017]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/3] binfmt_elf: Clean up codes related to total_size passed into elf_map()
Date
Currently total_size passed into elf_map() is non-zero only for dynamic
loader, either in load_elf_interp(), or in load_elf_binary() for ET_DYN
without INTERP case. Now PIE programs are loaded offset from ELF_ET_DYN_BASE,
and map flags has been set as MAP_FIXED, no need to use tatal_size strategy.

And in elf_map(), Oleg pointed out that the mmap(total_size) + munmap(extra_size)
way looks very ugly. We can search the unmapped area of total_size big,
then only map the 1st PT_LOAD segment with the searched address.

In this patchset, clean up them all.

Baoquan He (3):
binfmt_elf: Clean up the variable name of map flags
binfmt_elf: Get the total_size only for dynamic loader in
load_elf_binary()
binfmt_elf: Search an unmapped area with total_size but not map the
whole image

fs/binfmt_elf.c | 50 +++++++++++++++++++++++++++-----------------------
1 file changed, 27 insertions(+), 23 deletions(-)

--
2.5.5

\
 
 \ /
  Last update: 2017-10-06 05:39    [W:0.040 / U:29.940 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site