PR/46286 CVS commit: src

["Martin Husemann" <martin%netbsd.org@localhost>]

The following reply was made to PR kern/46286; it has been noted by GNATS.

From: "Martin Husemann" <martin%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/46286 CVS commit: src
Date: Sun, 8 Apr 2012 11:27:46 +0000

 Module Name:   src
 Committed By:  martin
 Date:          Sun Apr  8 11:27:46 UTC 2012
 
 Modified Files:
        src/lib/libc/gen: posix_spawn_fileactions.c
        src/sys/compat/netbsd32: netbsd32.h netbsd32_execve.c syscalls.master
        src/sys/kern: exec_elf.c kern_exec.c kern_exit.c
        src/sys/sys: exec.h spawn.h
        src/sys/uvm: uvm_extern.h uvm_glue.c uvm_map.c
        src/tests/lib/libc/gen/posix_spawn: t_fileactions.c
 
 Log Message:
 Rework posix_spawn locking and memory management:
  - always provide a vmspace for the new proc, initially borrowing from proc0
    (this part fixes PR 46286)
  - increase parallelism between parent and child if arguments allow this,
    avoiding a potential deadlock on exec_lock
  - add a new flag for userland to request old (lockstepped) behaviour for
    better error reporting
  - adapt test cases to the previous two and add a new variant to test the
    diagnostics flag
  - fix a few memory (and lock) leaks
  - provide netbsd32 compat
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.1 -r1.2 src/lib/libc/gen/posix_spawn_fileactions.c
 cvs rdiff -u -r1.94 -r1.95 src/sys/compat/netbsd32/netbsd32.h \
     src/sys/compat/netbsd32/syscalls.master
 cvs rdiff -u -r1.33 -r1.34 src/sys/compat/netbsd32/netbsd32_execve.c
 cvs rdiff -u -r1.37 -r1.38 src/sys/kern/exec_elf.c
 cvs rdiff -u -r1.347 -r1.348 src/sys/kern/kern_exec.c
 cvs rdiff -u -r1.237 -r1.238 src/sys/kern/kern_exit.c
 cvs rdiff -u -r1.134 -r1.135 src/sys/sys/exec.h
 cvs rdiff -u -r1.1 -r1.2 src/sys/sys/spawn.h
 cvs rdiff -u -r1.182 -r1.183 src/sys/uvm/uvm_extern.h
 cvs rdiff -u -r1.158 -r1.159 src/sys/uvm/uvm_glue.c
 cvs rdiff -u -r1.316 -r1.317 src/sys/uvm/uvm_map.c
 cvs rdiff -u -r1.3 -r1.4 src/tests/lib/libc/gen/posix_spawn/t_fileactions.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.