Messages in this thread | | | From | Baoquan He <> | Subject | [PATCH 0/3] binfmt_elf: Clean up codes related to total_size passed into elf_map() | Date | Fri, 6 Oct 2017 11:37:55 +0800 |
| |
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
| |