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Annotation of sys/ddb/db_usrreq.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: db_usrreq.c,v 1.12 2006/03/15 21:49:40 miod Exp $     */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1996 Michael Shalayeff.  All rights reserved.
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  *
        !            15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            17:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            18:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            19:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            20:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            21:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            22:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            23:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            24:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            25:  */
        !            26:
        !            27: #include <sys/param.h>
        !            28: #include <sys/types.h>
        !            29: #include <sys/kernel.h>
        !            30: #include <sys/proc.h>
        !            31: #include <uvm/uvm_extern.h>
        !            32: #include <sys/sysctl.h>
        !            33:
        !            34: #include <ddb/db_var.h>
        !            35:
        !            36: int    db_log = 1;
        !            37:
        !            38: int
        !            39: ddb_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
        !            40:     size_t newlen, struct proc *p)
        !            41: {
        !            42:        int error, ctlval;
        !            43:
        !            44:        /* All sysctl names at this level are terminal. */
        !            45:        if (namelen != 1)
        !            46:                return (ENOTDIR);
        !            47:
        !            48:        switch (name[0]) {
        !            49:
        !            50:        case DBCTL_RADIX:
        !            51:                return sysctl_int(oldp, oldlenp, newp, newlen, &db_radix);
        !            52:        case DBCTL_MAXWIDTH:
        !            53:                return sysctl_int(oldp, oldlenp, newp, newlen, &db_max_width);
        !            54:        case DBCTL_TABSTOP:
        !            55:                return sysctl_int(oldp, oldlenp, newp, newlen, &db_tab_stop_width);
        !            56:        case DBCTL_MAXLINE:
        !            57:                return sysctl_int(oldp, oldlenp, newp, newlen, &db_max_line);
        !            58:        case DBCTL_PANIC:
        !            59:                if (securelevel > 0)
        !            60:                        return (sysctl_int_lower(oldp, oldlenp, newp, newlen,
        !            61:                            &db_panic));
        !            62:                else {
        !            63:                        ctlval = db_panic;
        !            64:                        if ((error = sysctl_int(oldp, oldlenp, newp, newlen,
        !            65:                            &ctlval)) || newp == NULL)
        !            66:                                return (error);
        !            67:                        if (ctlval != 1 && ctlval != 0)
        !            68:                                return (EINVAL);
        !            69:                        db_panic = ctlval;
        !            70:                        return (0);
        !            71:                }
        !            72:                break;
        !            73:        case DBCTL_CONSOLE:
        !            74:                if (securelevel > 0)
        !            75:                        return (sysctl_int_lower(oldp, oldlenp, newp, newlen,
        !            76:                            &db_console));
        !            77:                else {
        !            78:                        ctlval = db_console;
        !            79:                        if ((error = sysctl_int(oldp, oldlenp, newp, newlen,
        !            80:                            &ctlval)) || newp == NULL)
        !            81:                                return (error);
        !            82:                        if (ctlval != 1 && ctlval != 0)
        !            83:                                return (EINVAL);
        !            84:                        db_console = ctlval;
        !            85:                        return (0);
        !            86:                }
        !            87:                break;
        !            88:        case DBCTL_LOG:
        !            89:                return (sysctl_int(oldp, oldlenp, newp, newlen, &db_log));
        !            90:        default:
        !            91:                return (EOPNOTSUPP);
        !            92:        }
        !            93:        /* NOTREACHED */
        !            94: }