[src/trunk]: src/sys/compat/linux/common Fully emulate the Linux wait4(2) sys...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d7e2a5015465
branches:  trunk
changeset: 472938:d7e2a5015465
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Thu May 13 01:00:50 1999 +0000

description:
Fully emulate the Linux wait4(2) system call, including the __WCLONE
flag (which is equivalent to our new WALTSIG).

diffstat:

 sys/compat/linux/common/linux_misc.c |  19 ++++++++++++++++---
 1 files changed, 16 insertions(+), 3 deletions(-)

diffs (42 lines):

diff -r 9df3d434d4c2 -r d7e2a5015465 sys/compat/linux/common/linux_misc.c
--- a/sys/compat/linux/common/linux_misc.c      Thu May 13 00:59:03 1999 +0000
+++ b/sys/compat/linux/common/linux_misc.c      Thu May 13 01:00:50 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_misc.c,v 1.54 1999/05/05 20:01:03 thorpej Exp $  */
+/*     $NetBSD: linux_misc.c,v 1.55 1999/05/13 01:00:50 thorpej Exp $  */
 
 /*-
  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
@@ -147,7 +147,7 @@
                syscallarg(struct rusage *) rusage;
        } */ *uap = v;
        struct sys_wait4_args w4a;
-       int error, *status, tstat;
+       int error, *status, tstat, options, linux_options;
        caddr_t sg;
 
        if (SCARG(uap, status) != NULL) {
@@ -156,9 +156,22 @@
        } else
                status = NULL;
 
+       linux_options = SCARG(uap, options);
+       options = 0;
+       if (linux_options &
+           ~(LINUX_WAIT4_WNOHANG|LINUX_WAIT4_WUNTRACED|LINUX_WAIT4_WCLONE))
+               return (EINVAL);
+
+       if (linux_options & LINUX_WAIT4_WNOHANG)
+               options |= WNOHANG;
+       if (linux_options & LINUX_WAIT4_WUNTRACED)
+               options |= WUNTRACED;
+       if (linux_options & LINUX_WAIT4_WCLONE)
+               options |= WALTSIG;
+
        SCARG(&w4a, pid) = SCARG(uap, pid);
        SCARG(&w4a, status) = status;
-       SCARG(&w4a, options) = SCARG(uap, options);
+       SCARG(&w4a, options) = options;
        SCARG(&w4a, rusage) = SCARG(uap, rusage);
 
        if ((error = sys_wait4(p, &w4a, retval)))