bsd/dev/i386/cons.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1987, 1988 NeXT, Inc.
  27  *
  28  * HISTORY
  29  *  7-Jan-93  Mac Gillon (mgillon) at NeXT
  30  *      Integrated POSIX support
  31  *
  32  * 12-Aug-87  John Seamons (jks) at NeXT
  33  *      Ported to NeXT.
  34  */
  35
  36 /*
  37  * Indirect driver for console.
  38  */
  39 #include <sys/param.h>
  40 #include <sys/systm.h>
  41 #include <sys/conf.h>
  42 #include <sys/ioctl.h>
  43 #include <sys/tty.h>
  44 #include <sys/proc.h>
  45 #include <sys/uio.h>
  46
  47 struct tty      cons;
  48 struct tty      *constty;               /* current console device */
  49
  50 /*ARGSUSED*/
  51 int
  52 cnopen(dev, flag, devtype, pp)
  53         dev_t dev;
  54         int flag, devtype;
  55         struct proc *pp;
  56 {
  57         dev_t device;
  58
  59         if (constty)
  60             device = constty->t_dev;
  61         else
  62             device = cons.t_dev;
  63         return ((*cdevsw[major(device)].d_open)(device, flag, devtype, pp));
  64 }
  65
  66 /*ARGSUSED*/
  67 int
  68 cnclose(dev, flag, mode, pp)
  69         dev_t dev;
  70         int flag, mode;
  71         struct proc *pp;
  72 {
  73         dev_t device;
  74
  75         if (constty)
  76             device = constty->t_dev;
  77         else
  78             device = cons.t_dev;
  79         return ((*cdevsw[major(device)].d_close)(device, flag, mode, pp));
  80 }
  81
  82 /*ARGSUSED*/
  83 int
  84 cnread(dev, uio, ioflag)
  85         dev_t dev;
  86         struct uio *uio;
  87         int ioflag;
  88 {
  89         dev_t device;
  90
  91         if (constty)
  92             device = constty->t_dev;
  93         else
  94             device = cons.t_dev;
  95         return ((*cdevsw[major(device)].d_read)(device, uio, ioflag));
  96 }
  97
  98 /*ARGSUSED*/
  99 int
 100 cnwrite(dev, uio, ioflag)
 101         dev_t dev;
 102         struct uio *uio;
 103         int ioflag;
 104 {
 105     dev_t device;
 106
 107         if (constty)
 108             device = constty->t_dev;
 109         else
 110             device = cons.t_dev;
 111     return ((*cdevsw[major(device)].d_write)(device, uio, ioflag));
 112 }
 113
 114 /*ARGSUSED*/
 115 int
 116 cnioctl(dev, cmd, addr, flag, p)
 117         dev_t dev;
 118         int cmd;
 119         caddr_t addr;
 120         int flag;
 121         struct proc *p;
 122 {
 123         dev_t device;
 124
 125         if (constty)
 126             device = constty->t_dev;
 127         else
 128             device = cons.t_dev;
 129         /*
 130          * Superuser can always use this to wrest control of console
 131          * output from the "virtual" console.
 132          */
 133         if (cmd == TIOCCONS && constty) {
 134                 int error = suser(p->p_ucred, (u_short *) NULL);
 135                 if (error)
 136                         return (error);
 137                 constty = NULL;
 138                 return (0);
 139         }
 140         return ((*cdevsw[major(device)].d_ioctl)(device, cmd, addr, flag, p));
 141 }
 142
 143 /*ARGSUSED*/
 144 int
 145 cnselect(dev, flag, wql, p)
 146         dev_t dev;
 147         int flag;
 148         void * wql;
 149         struct proc *p;
 150 {
 151         dev_t device;
 152
 153         if (constty)
 154             device = constty->t_dev;
 155         else
 156             device = cons.t_dev;
 157         return ((*cdevsw[major(device)].d_select)(device, flag, wql, p));
 158 }
 159
 160 #if 0   /* FIXME  - using OSFMK console driver for the moment */
 161 int
 162 cngetc()
 163 {
 164         dev_t device;
 165
 166         if (constty)
 167             device = constty->t_dev;
 168         else
 169             device = cons.t_dev;
 170         return ((*cdevsw[major(device)].d_getc)(device));
 171 }
 172
 173 /*ARGSUSED*/
 174 int
 175 cnputc(c)
 176         char c;
 177 {
 178         dev_t device;
 179
 180         if (constty)
 181             device = constty->t_dev;
 182         else
 183             device = cons.t_dev;
 184         return ((*cdevsw[major(device)].d_putc)(device, c));
 185 }
 186 #endif
 187
 188 #if     NCPUS > 1
 189 slave_cnenable()
 190 {
 191         /* FIXME: what to do here? */
 192 }
 193 #endif  NCPUS > 1
 194
 195 #if 0
 196 void
 197 kprintf( const char *format, ...)
 198 {
 199         /* on PPC this outputs to the serial line */
 200         /* nop on intel ... umeshv@apple.com */
 201
 202 }
 203 #endif
 204
 205 /*
 206  * Write message to console; create an alert panel if no text-type window
 207  * currently exists. Caller must call alert_done() when finished.
 208  * The height and width arguments are not used; they are provided for
 209  * compatibility with the 68k version of alert().
 210  */
 211 int
 212 alert(
 213         int width,
 214         int height,
 215         const char *title,
 216         const char *msg,
 217         int p1,
 218         int p2,
 219         int p3,
 220         int p4,
 221         int p5,
 222         int p6,
 223         int p7,
 224         int p8)
 225 {
 226         char smsg[200];
 227
 228         sprintf(smsg, msg,  p1, p2, p3, p4, p5, p6, p7, p8);
 229 #if FIXME  /* [ */
 230         /* DoAlert(title, smsg); */
 231 #else
 232         printf("%s\n",smsg);
 233 #endif  /* FIXME ] */
 234
 235         return 0;
 236 }
 237
 238 int
 239 alert_done()
 240 {
 241         /* DoRestore(); */
 242         return 0;
 243 }
 244