initial import

1 files changed, 44 insertions, 0 deletions

diff --git a/sysdeps/unix/bsd/sequent/i386/getgroups.S b/sysdeps/unix/bsd/sequent/i386/getgroups.S
new file mode 100644
index 0000000000..b68bcbdbaa
--- /dev/null
+++ b/sysdeps/unix/bsd/sequent/i386/getgroups.S
@@ -0,0 +1,44 @@
+/* Copyright (C) 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <sysdep.h>
+#include <limits.h>
+
+/* Dynix erroneously reports `getgroups (0, 0)' as an error.
+   We fix up for that case.  */
+
+#define syscall_error myerror
+SYSCALL__ (getgroups, 2)
+#undef syscall_error
+	ret
+myerror:
+	tstl 4(%esp)		/* Was the first arg 0?  */
+	jnz syscall_error	/* If not, go to the normal error case.  */
+	/* When called with (0, 0), we want to return the number of groups
+	   without storing anything.  The Dynix system call gives an error
+	   for this case, so we fix up by calling it with a local array we
+	   never use, and just use the return value.  */
+	subl %esp, $(NGROUPS_MAX * 4) /* Allocate a local array.  */
+	movl $NGROUPS_MAX, %ecx	/* Pass NGROUPS_MAX for first arg.  */
+	movl %esp, %edx		/* Pass local array for second arg.  */
+	DO_CALL (getgroups, 2)	/* Do the system call.  */
+	addl %esp, $(NGROUPS_MAX * 4) /* Pop the local array.  */
+	jb syscall_error	/* Check for error from the system call.  */
+	ret			/* Return its value.  */
+
+weak_alias (__getgroups, getgroups)