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Annotation of kernel/kernserv/loadable_fs.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*     @(#)loadable_fs.h       2.0     26/06/90        (c) 1990 NeXT   */
        !            26: 
        !            27: /* 
        !            28:  * loadable_fs.h - message struct for loading and initializing loadable
        !            29:  *                file systems.
        !            30:  *
        !            31:  * HISTORY
        !            32:  * 26-Jun-90   Doug Mitchell at NeXT
        !            33:  *     Created.
        !            34:  * 5-Nov-91    Lee Boynton at NeXT
        !            35:  *     Added support for initialization, labels, and WSM options
        !            36:  */
        !            37: 
        !            38: #ifndef        _LOADABLE_FS_
        !            39: #define _LOADABLE_FS_
        !            40: 
        !            41: #import <mach/message.h>
        !            42: 
        !            43: /*
        !            44:  * This message is used in an RPC between a lightweight app and a loaded
        !            45:  * kernel server. 
        !            46:  */
        !            47: struct load_fs_msg {
        !            48:        msg_header_t    lfm_header;
        !            49:        msg_type_t      lfm_status_t;
        !            50:        unsigned int    lfm_status;     /* status returned by server */
        !            51: };
        !            52: 
        !            53: /*
        !            54:  * msg_id values for load_fs_msg
        !            55:  */
        !            56: #define LFM_ID                 0x123456        /* base */
        !            57: #define LFM_DUMP_MOUNT         (LFM_ID+1)      /* dump active FS and VNODE 
        !            58:                                                 * list */
        !            59: #define LFM_TERMINATE          (LFM_ID+2)      /* terminate */
        !            60: #define LFM_PURGE              (LFM_ID+3)      /* purge all vnodes except 
        !            61:                                                 * root */
        !            62: #define LFM_DUMP_LOCAL         (LFM_ID+4)      /* dump local FS info */
        !            63: #define LFM_ENABLE_TRACE       (LFM_ID+5)      /* enable debug trace */
        !            64: #define LFM_DISABLE_TRACE      (LFM_ID+6)      /* disable debug trace */
        !            65:                                         
        !            66: /*
        !            67:  * lfm_stat values 
        !            68:  */
        !            69: #define LFM_STAT_GOOD          0       /* file system loaded OK */
        !            70: #define LFM_STAT_NOSPACE       1       /* no space in vfssw */
        !            71: #define LFM_STAT_BADMSG                2       /* bad message received */
        !            72: #define LFM_STAT_UNDEFINED     3
        !            73: 
        !            74: /*
        !            75:  * Constants for Loadabls FS Utilities (in "/usr/FileSystems")
        !            76:  *
        !            77:  * Example of a /usr/filesystems directory
        !            78:  *
        !            79:  * /usr/filesystems/dos.fs/dos.util            utility with which WSM 
        !            80:  *                                                     communicates
        !            81:  * /usr/filesystems/dos.fs/dos.name            "DOS Floppy" 
        !            82:  * /usr/filesystems/dos.fs/dos_reloc           actual loadable filesystem
        !            83:  * /usr/filesystems/dos.fs/dos.openfs.tiff     "open folder" icon 
        !            84:  * /usr/filesystems/dos.fs/dos.fs.tiff         "closed folder" icon 
        !            85:  */
        !            86: #define FS_DIR_LOCATION                "/usr/filesystems"      
        !            87: #define FS_DIR_SUFFIX          ".fs"
        !            88: #define FS_UTIL_SUFFIX         ".util"
        !            89: #define FS_OPEN_SUFFIX         ".openfs.tiff"
        !            90: #define FS_CLOSED_SUFFIX       ".fs.tiff"
        !            91: #define FS_NAME_SUFFIX         ".name"
        !            92: #define FS_LABEL_SUFFIX                ".label"
        !            93: 
        !            94: /*
        !            95:  * .util program commands - all sent in the form "-p" or "-m" ... as argv[1].
        !            96:  */
        !            97: #define FSUC_PROBE             'p'     /* probe FS for mount or init */
        !            98:        /* example usage: foo.util -p fd0 removable writable */ 
        !            99: 
        !           100: #define FSUC_PROBEFORINIT      'P'     /* probe FS for init only */
        !           101:        /* example usage: foo.util -P fd0 removable */ 
        !           102: 
        !           103: #define FSUC_MOUNT             'm'     /* mount FS */
        !           104:        /* example usage: foo.util -m fd0 /bar removable writable */ 
        !           105: 
        !           106: #define FSUC_REPAIR            'r'     /* repair ('fsck') FS */ 
        !           107:        /* example usage: foo.util -r fd0 removable */
        !           108: 
        !           109: #define        FSUC_INITIALIZE         'i'     /* initialize FS */
        !           110:        /* example usage: foo.util -i fd0 removable */ 
        !           111: 
        !           112: #define FSUC_UNMOUNT           'u'     /* unmount FS */
        !           113:        /* example usage: foo.util -u fd0 /bar */ 
        !           114: 
        !           115: /* The following is not used by Workspace Manager */
        !           116: #define FSUC_MOUNT_FORCE       'M'     /* like FSUC_MOUNT, but proceed even on
        !           117:                                         * error. */
        !           118: /*
        !           119:  * Return codes from .util program
        !           120:  */
        !           121: #define FSUR_RECOGNIZED                (-1)    /* response to FSUC_PROBE; implies that
        !           122:                                         * a mount is possible */
        !           123: #define FSUR_UNRECOGNIZED      (-2)    /* negative response to FSUC_PROBE */
        !           124: #define FSUR_IO_SUCCESS                (-3)    /* mount, unmount, repair succeeded */
        !           125: #define FSUR_IO_FAIL           (-4)    /* unrecoverable I/O error */
        !           126: #define FSUR_IO_UNCLEAN                (-5)    /* mount failed, file system not clean 
        !           127:                                         */
        !           128: #define FSUR_INVAL             (-6)    /* invalid argument */
        !           129: #define FSUR_LOADERR           (-7)    /* kern_loader error */
        !           130: #define FSUR_INITRECOGNIZED    (-8)    /* response to FSUC_PROBE or 
        !           131:                                         * FSUC_PROBEFORINIT, implies that
        !           132:                                         * initialization is possible */
        !           133: 
        !           134: /*
        !           135:  *     mount parameters passed from WSM to the .util program.
        !           136:  */
        !           137: #define        DEVICE_READONLY         "readonly"
        !           138: #define        DEVICE_WRITABLE         "writable"
        !           139: 
        !           140: #define        DEVICE_REMOVABLE        "removable"
        !           141: #define        DEVICE_FIXED            "fixed"
        !           142: 
        !           143: /*
        !           144:  *     Additional parameters to the mount command - used by WSM when they
        !           145:  *     appear in the /etc/mtab file.
        !           146:  */
        !           147: #define        MNTOPT_FS               "filesystem=" /* e.g. "filesystem=DOS" */
        !           148: #define        MNTOPT_REMOVABLE        "removable"
        !           149: 
        !           150: #endif /* _LOADABLE_FS_ */

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