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      1 /*	$NetBSD: linux_oldselect.c,v 1.59 2021/09/23 06:56:27 ryo Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden and Eric Haszlakiewicz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: linux_oldselect.c,v 1.59 2021/09/23 06:56:27 ryo Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/mount.h>
     38 
     39 #include <sys/sched.h>
     40 #include <sys/syscallargs.h>
     41 
     42 #include <compat/linux/common/linux_types.h>
     43 #include <compat/linux/common/linux_misc.h>
     44 #include <compat/linux/common/linux_mmap.h>
     45 #include <compat/linux/common/linux_signal.h>
     46 #include <compat/linux/common/linux_oldselect.h>
     47 
     48 #include <compat/linux/linux_syscallargs.h>
     49 
     50 /* Used on: arm, i386, m68k */
     51 /* Not used on: aarch64, alpha, mips, ppc, sparc, sparc64 */
     52 
     53 /*
     54  * Not sure why the arguments to this older version of select() were put
     55  * into a structure, because there are 5, and that can all be handled
     56  * in registers on the i386 like Linux wants to.
     57  */
     58 int
     59 linux_sys_oldselect(struct lwp *l, const struct linux_sys_oldselect_args *uap, register_t *retval)
     60 {
     61 	/* {
     62 		syscallarg(struct linux_oldselect *) lsp;
     63 	} */
     64 	struct linux_oldselect ls;
     65 	int error;
     66 
     67 	if ((error = copyin(SCARG(uap, lsp), &ls, sizeof(ls))))
     68 		return error;
     69 
     70 	return linux_select1(l, retval, ls.nfds, ls.readfds, ls.writefds,
     71 	    ls.exceptfds, ls.timeout);
     72 }
     73 
     74