[src/trunk]: src/sys/compat/osf1 implement osf1_sys_madvise()

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

details:   https://anonhg.NetBSD.org/src/rev/7f73c9ca006a
branches:  trunk
changeset: 472338:7f73c9ca006a
user:      cgd <cgd%NetBSD.org@localhost>
date:      Tue Apr 27 18:45:22 1999 +0000

description:
implement osf1_sys_madvise()

diffstat:

 sys/compat/osf1/osf1_misc.c |  62 ++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 59 insertions(+), 3 deletions(-)

diffs (84 lines):

diff -r 1c740e4f03a9 -r 7f73c9ca006a sys/compat/osf1/osf1_misc.c
--- a/sys/compat/osf1/osf1_misc.c       Tue Apr 27 18:41:37 1999 +0000
+++ b/sys/compat/osf1/osf1_misc.c       Tue Apr 27 18:45:22 1999 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: osf1_misc.c,v 1.27 1999/04/27 17:56:52 cgd Exp $ */
+/* $NetBSD: osf1_misc.c,v 1.28 1999/04/27 18:45:22 cgd Exp $ */
 
 /*
  * Copyright (c) 1999 Christopher G. Demetriou.  All rights reserved.
@@ -1054,6 +1054,7 @@
        struct rusage *ru;
        struct osf1_rusage *oru;
 {
+
        oru->ru_utime.tv_sec = ru->ru_utime.tv_sec;
        oru->ru_utime.tv_usec = ru->ru_utime.tv_usec;
 
@@ -1082,9 +1083,64 @@
        void *v;
        register_t *retval;
 {
+       struct osf1_sys_madvise_args *uap = v;
+       struct sys_madvise_args a;
+       int error;
 
-       /* XXX */
-       return EINVAL;
+       SCARG(&a, addr) = SCARG(uap, addr);
+       SCARG(&a, len) = SCARG(uap, len);
+
+       error = 0;
+       switch (SCARG(uap, behav)) {
+       case OSF1_MADV_NORMAL:
+               SCARG(&a, behav) = MADV_NORMAL;
+               break;
+
+       case OSF1_MADV_RANDOM:
+               SCARG(&a, behav) = MADV_RANDOM;
+               break;
+
+       case OSF1_MADV_SEQUENTIAL:
+               SCARG(&a, behav) = MADV_SEQUENTIAL;
+               break;
+
+       case OSF1_MADV_WILLNEED:
+               SCARG(&a, behav) = MADV_WILLNEED;
+               break;
+
+       case OSF1_MADV_DONTNEED_COMPAT:
+               SCARG(&a, behav) = MADV_DONTNEED;
+               break;
+
+       case OSF1_MADV_SPACEAVAIL:
+               SCARG(&a, behav) = MADV_SPACEAVAIL;
+               break;
+
+       case OSF1_MADV_DONTNEED:
+               /*
+                * XXX not supported.  In Digital UNIX, this flushes all
+                * XXX data in the region and replaces it with ZFOD pages.
+                */
+               error = EINVAL;
+               break;
+
+       default:
+               error = EINVAL;
+               break;
+       }
+
+       if (error == 0) {
+               error = sys_madvise(p, &a, retval);
+
+               /*
+                * NetBSD madvise() currently always returns ENOSYS.
+                * Digital UNIX says that non-operational requests (i.e.
+                * valid, but unimplemented 'behav') will return success.
+                */
+               if (error == ENOSYS)
+                       error = 0;
+       }
+       return (error);
 }
 
 int