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Annotation of sys/compat/svr4/svr4_filio.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: svr4_filio.c,v 1.5 2002/03/14 01:26:51 millert Exp $   */
        !             2: /*     $NetBSD: svr4_filio.c,v 1.5 1996/04/11 12:54:40 christos Exp $   */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1994 Christos Zoulas
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. The name of the author may not be used to endorse or promote products
        !            17:  *    derived from this software without specific prior written permission
        !            18:  *
        !            19:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            20:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            21:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            22:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            23:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            24:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            25:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            26:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            27:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            28:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            29:  */
        !            30:
        !            31: #include <sys/param.h>
        !            32: #include <sys/proc.h>
        !            33: #include <sys/systm.h>
        !            34: #include <sys/file.h>
        !            35: #include <sys/filedesc.h>
        !            36: #include <sys/ioctl.h>
        !            37: #include <sys/termios.h>
        !            38: #include <sys/tty.h>
        !            39: #include <sys/socket.h>
        !            40: #include <sys/mount.h>
        !            41: #include <net/if.h>
        !            42: #include <sys/malloc.h>
        !            43:
        !            44: #include <sys/syscallargs.h>
        !            45:
        !            46: #include <compat/svr4/svr4_types.h>
        !            47: #include <compat/svr4/svr4_util.h>
        !            48: #include <compat/svr4/svr4_signal.h>
        !            49: #include <compat/svr4/svr4_syscallargs.h>
        !            50: #include <compat/svr4/svr4_stropts.h>
        !            51: #include <compat/svr4/svr4_ioctl.h>
        !            52: #include <compat/svr4/svr4_filio.h>
        !            53:
        !            54:
        !            55: int
        !            56: svr4_fil_ioctl(fp, p, retval, fd, cmd, data)
        !            57:        struct file *fp;
        !            58:        struct proc *p;
        !            59:        register_t *retval;
        !            60:        int fd;
        !            61:        u_long cmd;
        !            62:        caddr_t data;
        !            63: {
        !            64:        int error;
        !            65:        int num;
        !            66:        struct filedesc *fdp = p->p_fd;
        !            67:        int (*ctl)(struct file *, u_long,  caddr_t, struct proc *) =
        !            68:                        fp->f_ops->fo_ioctl;
        !            69:
        !            70:        *retval = 0;
        !            71:
        !            72:        switch (cmd) {
        !            73:        case SVR4_FIOCLEX:
        !            74:                fdp->fd_ofileflags[fd] |= UF_EXCLOSE;
        !            75:                return 0;
        !            76:
        !            77:        case SVR4_FIONCLEX:
        !            78:                fdp->fd_ofileflags[fd] &= ~UF_EXCLOSE;
        !            79:                return 0;
        !            80:
        !            81:        case SVR4_FIOGETOWN:
        !            82:        case SVR4_FIOSETOWN:
        !            83:        case SVR4_FIOASYNC:
        !            84:        case SVR4_FIONBIO:
        !            85:        case SVR4_FIONREAD:
        !            86:                if ((error = copyin(data, &num, sizeof(num))) != 0)
        !            87:                        return error;
        !            88:
        !            89:                switch (cmd) {
        !            90:                case SVR4_FIOGETOWN:    cmd = FIOGETOWN; break;
        !            91:                case SVR4_FIOSETOWN:    cmd = FIOSETOWN; break;
        !            92:                case SVR4_FIOASYNC:     cmd = FIOASYNC;  break;
        !            93:                case SVR4_FIONBIO:      cmd = FIONBIO;   break;
        !            94:                case SVR4_FIONREAD:     cmd = FIONREAD;  break;
        !            95:                }
        !            96:
        !            97:                error = (*ctl)(fp, cmd, (caddr_t) &num, p);
        !            98:
        !            99:                if (error)
        !           100:                        return error;
        !           101:
        !           102:                return copyout(&num, data, sizeof(num));
        !           103:
        !           104:        default:
        !           105:                DPRINTF(("Unknown svr4 filio %lx\n", cmd));
        !           106:                return 0;       /* ENOSYS really */
        !           107:        }
        !           108: }