svr4_filio.c

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    1 /*      $NetBSD: svr4_filio.c,v 1.22 2008/07/02 16:45:20 matt Exp $      */
    2 
    3 /*-
    4  * Copyright (c) 1994, 2008 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Christos Zoulas.
    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: svr4_filio.c,v 1.22 2008/07/02 16:45:20 matt Exp $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/proc.h>
   37 #include <sys/systm.h>
   38 #include <sys/file.h>
   39 #include <sys/filedesc.h>
   40 #include <sys/ioctl.h>
   41 #include <sys/termios.h>
   42 #include <sys/tty.h>
   43 #include <sys/socket.h>
   44 #include <sys/mount.h>
   45 #include <net/if.h>
   46 #include <sys/malloc.h>
   47 
   48 #include <sys/syscallargs.h>
   49 
   50 #include <compat/svr4/svr4_types.h>
   51 #include <compat/svr4/svr4_util.h>
   52 #include <compat/svr4/svr4_signal.h>
   53 #include <compat/svr4/svr4_lwp.h>
   54 #include <compat/svr4/svr4_ucontext.h>
   55 #include <compat/svr4/svr4_syscallargs.h>
   56 #include <compat/svr4/svr4_stropts.h>
   57 #include <compat/svr4/svr4_ioctl.h>
   58 #include <compat/svr4/svr4_filio.h>
   59 
   60 
   61 int
   62 svr4_fil_ioctl(file_t *fp, struct lwp *l, register_t *retval, int fd, u_long cmd, void *data)
   63 {
   64         struct proc *p = l->l_proc;
   65         int error;
   66         int num;
   67         filedesc_t *fdp = p->p_fd;
   68         fdfile_t *ff;
   69         int (*ctl)(file_t *, u_long,  void *) = fp->f_ops->fo_ioctl;
   70 
   71         *retval = 0;
   72         error = 0;
   73 
   74         if ((fp = fd_getfile(fd)) == NULL)
   75                 return EBADF;
   76         ff = fdp->fd_ofiles[fd];
   77         switch (cmd) {
   78         case SVR4_FIOCLEX:
   79                 ff->ff_exclose = true;
   80                 fdp->fd_exclose = true;
   81                 break;
   82 
   83         case SVR4_FIONCLEX:
   84                 ff->ff_exclose = false;
   85                 break;
   86 
   87         case SVR4_FIOGETOWN:
   88         case SVR4_FIOSETOWN:
   89         case SVR4_FIOASYNC:
   90         case SVR4_FIONBIO:
   91         case SVR4_FIONREAD:
   92                 if ((error = copyin(data, &num, sizeof(num))) != 0)
   93                         break;
   94 
   95                 switch (cmd) {
   96                 case SVR4_FIOGETOWN:    cmd = FIOGETOWN; break;
   97                 case SVR4_FIOSETOWN:    cmd = FIOSETOWN; break;
   98                 case SVR4_FIOASYNC:     cmd = FIOASYNC;  break;
   99                 case SVR4_FIONBIO:      cmd = FIONBIO;   break;
  100                 case SVR4_FIONREAD:     cmd = FIONREAD;  break;
  101                 }
  102 
  103                 error = (*ctl)(fp, cmd, &num);
  104                 if (error == 0)
  105                         error = copyout(&num, data, sizeof(num));
  106                 break;
  107 
  108         default:
  109                 DPRINTF(("Unknown svr4 filio %lx\n", cmd));
  110                 break;
  111         }
  112         fd_putfile(fd);
  113         return error;
  114 }

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FreeBSD/Linux Kernel Cross Reference sys/compat/svr4/svr4_filio.c

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sys/compat/svr4/svr4_filio.c