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Annotation of sys/compat/linux/linux_fdio.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: linux_fdio.c,v 1.6 2002/03/14 01:26:50 millert Exp $  */
                      2: /*     $NetBSD: linux_fdio.c,v 1.1 2000/12/10 14:12:16 fvdl Exp $      */
                      3:
                      4: /*
                      5:  * Copyright (c) 2000 Wasabi Systems, Inc.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Written by Frank van der Linden for Wasabi Systems, Inc.
                      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:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *      This product includes software developed for the NetBSD Project by
                     21:  *      Wasabi Systems, Inc.
                     22:  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
                     23:  *    or promote products derived from this software without specific prior
                     24:  *    written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
                     27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     28:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     29:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
                     30:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     31:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     32:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     33:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     34:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     35:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     36:  * POSSIBILITY OF SUCH DAMAGE.
                     37:  */
                     38:
                     39: #include <sys/param.h>
                     40: #include <sys/systm.h>
                     41: #include <sys/ioctl.h>
                     42: #include <sys/file.h>
                     43: #include <sys/filedesc.h>
                     44: #include <sys/mount.h>
                     45: #include <sys/proc.h>
                     46: #include <sys/disklabel.h>
                     47:
                     48: #include <sys/syscallargs.h>
                     49:
                     50: #include <dev/isa/fdreg.h>
                     51:
                     52: #include <compat/linux/linux_types.h>
                     53: #include <compat/linux/linux_ioctl.h>
                     54: #include <compat/linux/linux_signal.h>
                     55: #include <compat/linux/linux_util.h>
                     56: #include <compat/linux/linux_fdio.h>
                     57:
                     58: #include <machine/ioctl_fd.h>
                     59:
                     60: #include <compat/linux/linux_syscallargs.h>
                     61:
                     62: int
                     63: linux_ioctl_fdio(struct proc *p, struct linux_sys_ioctl_args *uap,
                     64:                 register_t *retval)
                     65: {
                     66:        struct filedesc *fdp;
                     67:        struct file *fp;
                     68:        int error;
                     69:        int (*ioctlf)(struct file *, u_long, caddr_t, struct proc *);
                     70:        u_long com;
                     71:        struct fd_type fparams;
                     72:        struct linux_floppy_struct lflop;
                     73:        struct linux_floppy_drive_struct ldrive;
                     74:
                     75:        com = (u_long)SCARG(uap, data);
                     76:
                     77:        fdp = p->p_fd;
                     78:        if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
                     79:                return (EBADF);
                     80:
                     81:        FREF(fp);
                     82:        com = SCARG(uap, com);
                     83:        ioctlf = fp->f_ops->fo_ioctl;
                     84:
                     85:        retval[0] = error = 0;
                     86:
                     87:        switch (com) {
                     88:        case LINUX_FDMSGON:
                     89:        case LINUX_FDMSGOFF:
                     90:        case LINUX_FDTWADDLE:
                     91:        case LINUX_FDCLRPRM:
                     92:                /* whatever you say */
                     93:                break;
                     94:        case LINUX_FDPOLLDRVSTAT:
                     95:                /*
                     96:                 * Just fill in some innocent defaults.
                     97:                 */
                     98:                memset(&ldrive, 0, sizeof ldrive);
                     99:                ldrive.fd_ref = 1;
                    100:                ldrive.maxblock = 2;
                    101:                ldrive.maxtrack = ldrive.track = 1;
                    102:                ldrive.flags = LINUX_FD_DISK_WRITABLE;
                    103:                error = copyout(&ldrive, SCARG(uap, data), sizeof ldrive);
                    104:                break;
                    105:        case LINUX_FDGETPRM:
                    106:                error = ioctlf(fp, FD_GTYPE, (caddr_t)&fparams, p);
                    107:                if (error != 0)
                    108:                        break;
                    109:                lflop.size = fparams.heads * fparams.sectrac * fparams.tracks;
                    110:                lflop.sect = fparams.sectrac;
                    111:                lflop.head = fparams.heads;
                    112:                lflop.track = fparams.tracks;
                    113:                lflop.stretch = fparams.step == 2 ? 1 : 0;
                    114:                lflop.spec1 = fparams.steprate;
                    115:                lflop.gap = fparams.gap1;
                    116:                lflop.fmt_gap = fparams.gap2;
                    117:                lflop.rate = fparams.rate;
                    118:
                    119:                error = copyout(&lflop, SCARG(uap, data), sizeof lflop);
                    120:                break;
                    121:        case LINUX_FDSETPRM:
                    122:                /*
                    123:                 * Should use FDIOCSETFORMAT here, iff its interface
                    124:                 * is extended.
                    125:                 */
                    126:        case LINUX_FDDEFPRM:
                    127:        case LINUX_FDFMTBEG:
                    128:        case LINUX_FDFMTTRK:
                    129:        case LINUX_FDFMTEND:
                    130:        case LINUX_FDSETEMSGTRESH:
                    131:        case LINUX_FDFLUSH:
                    132:        case LINUX_FDSETMAXERRS:
                    133:        case LINUX_FDGETMAXERRS:
                    134:        case LINUX_FDGETDRVTYP:
                    135:        case LINUX_FDSETDRVPRM:
                    136:        case LINUX_FDGETDRVPRM:
                    137:        case LINUX_FDGETDRVSTAT:
                    138:        case LINUX_FDRESET:
                    139:        case LINUX_FDGETFDCSTAT:
                    140:        case LINUX_FDWERRORCLR:
                    141:        case LINUX_FDWERRORGET:
                    142:        case LINUX_FDRAWCMD:
                    143:        case LINUX_FDEJECT:
                    144:        default:
                    145:                error = EINVAL;
                    146:        }
                    147:
                    148:        FRELE(fp);
                    149:        return 0;
                    150: }