CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2014/12/04 21:12:48
Modified files:
sys/kern : kern_sysctl.c
sys/sys : sysctl.h
sys/uvm : uvm_glue.c uvm_extern.h uvm_map.c uvm_map.h
lib/libc/gen : sysctl.3
Log message:
Introduce a new sysctl to retrieve VM map entries
This adds a new sysctl KERN_PROC_VMMAP, which returns an array of VM map
entries of a specified process. This prevents debuggers from iterating
vm_map_entry RB tree via kvm(3).
The name KERN_PROC_VMMAP and struct kinfo_vmentry are chosen from the same
function in FreeBSD. struct kinfo_vmentry is revised to reduce size, because
OpenBSD does not keep track of filepaths. The semantic is also changed to
return max buffer size as a hint, and start iteration at the specified base
address.
Much valuable input from deraadt@, guenther@, tedu@
OK tedu@ deraadt@
