CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2014/10/03 11:41:00
Modified files:
sys/sys : mman.h
sys/uvm : uvm.h uvm_extern.h uvm_fault.c uvm_map.c
uvm_mmap.c
Log message:
Introduce __MAP_NOFAULT, a mmap(2) flag that makes sure a mapping will not
cause a SIGSEGV or SIGBUS when a mapped file gets truncated. Access to
pages that are not backed by a file on such a mapping will be replaced by
zero-filled anonymous pages. Makes passing file descriptors of mapped files
usable without having to play tricks with signal handlers.
"steal your mmap flag" deraadt@
