usr/src/lib/libc/port/sys/fcntl.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 #include "lint.h"
  31 #include <sys/param.h>
  32 #include <sys/sockio.h>
  33 #include <sys/filio.h>
  34 #include <sys/file.h>
  35 #include <sys/types.h>
  36 #include <fcntl.h>
  37 #include <signal.h>
  38 #include <sys/stat.h>
  39 #include <sys/stropts.h>
  40 #include <sys/socket.h>
  41 #include <sys/stropts.h>
  42 #include <sys/stream.h>
  43 #include <sys/socketvar.h>
  44 #include <sys/syscall.h>
  45 #include <errno.h>
  46 #include <stdio.h>
  47 #include <stdarg.h>
  48 #include <unistd.h>
  49 #include <string.h>
  50 #include <stdlib.h>
  51 #include "libc.h"
  52
  53 #if !defined(_LP64)
  54 /*
  55  * XXX these hacks are needed for X.25 which assumes that s_fcntl and
  56  * s_ioctl exist in the socket library.
  57  * There is no need for s_ioctl for other purposes.
  58  */
  59 #pragma weak s_fcntl = __fcntl
  60 #pragma weak _s_fcntl = __fcntl
  61 int
  62 s_ioctl(int fd, int cmd, intptr_t arg)
  63 {
  64         return (ioctl(fd, cmd, arg));
  65 }
  66 #endif  /* _LP64 */
  67
  68 int
  69 __fcntl(int fd, int cmd, ...)
  70 {
  71         int     res;
  72         int     pid;
  73         intptr_t arg;
  74         va_list ap;
  75
  76         va_start(ap, cmd);
  77         arg = va_arg(ap, intptr_t);
  78         va_end(ap);
  79
  80         switch (cmd) {
  81         case F_SETOWN:
  82                 pid = (int)arg;
  83                 return (ioctl(fd, FIOSETOWN, &pid));
  84
  85         case F_GETOWN:
  86                 if (ioctl(fd, FIOGETOWN, &res) < 0)
  87                         return (-1);
  88                 return (res);
  89
  90         default:
  91                 return (syscall(SYS_fcntl, fd, cmd, arg));
  92         }
  93 }