[src/netbsd-1-4]: src/sys/kern Pull up revision 1.57 (requested by sommerfeld):

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

details:   https://anonhg.NetBSD.org/src/rev/9eb03bc95c4a
branches:  netbsd-1-4
changeset: 470941:9eb03bc95c4a
user:      he <he%NetBSD.org@localhost>
date:      Fri Oct 06 15:35:10 2000 +0000

description:
Pull up revision 1.57 (requested by sommerfeld):
  Introduce the issetugid() system call.

diffstat:

 sys/kern/kern_prot.c |  20 +++++++++++++++++++-
 1 files changed, 19 insertions(+), 1 deletions(-)

diffs (34 lines):

diff -r 8294e226b993 -r 9eb03bc95c4a sys/kern/kern_prot.c
--- a/sys/kern/kern_prot.c      Fri Oct 06 15:34:21 2000 +0000
+++ b/sys/kern/kern_prot.c      Fri Oct 06 15:35:10 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_prot.c,v 1.53.2.1 1999/06/21 19:21:51 cgd Exp $   */
+/*     $NetBSD: kern_prot.c,v 1.53.2.2 2000/10/06 15:35:10 he Exp $    */
 
 /*
  * Copyright (c) 1982, 1986, 1989, 1990, 1991, 1993
@@ -505,6 +505,24 @@
        return (0);
 }
 
+int
+sys_issetugid(p, v, retval)
+       struct proc *p;
+       void *v;
+       register_t *retval;
+{
+       /*
+        * Note: OpenBSD sets a P_SUGIDEXEC flag set at execve() time,
+        * we use P_SUGID because we consider changing the owners as
+        * "tainting" as well.
+        * This is significant for procs that start as root and "become"
+        * a user without an exec - programs cannot know *everything*
+        * that libc *might* have put in their data segment.
+        */
+       *retval = (p->p_flag & P_SUGID) != 0;
+       return 0;
+}
+
 /* ARGSUSED */
 int
 sys_setgroups(p, v, retval)