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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <sys/types.h>
     30 #include <sys/t_lock.h>
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/buf.h>
     34 #include <sys/cmn_err.h>
     35 #include <sys/debug.h>
     36 #include <sys/errno.h>
     37 #include <sys/vfs.h>
     38 #include <sys/swap.h>
     39 #include <sys/vnode.h>
     40 #include <sys/cred.h>
     41 #include <sys/thread.h>
     42 #include <sys/zone.h>
     43 
     44 #include <fs/fs_subr.h>
     45 
     46 #include <sys/stream.h>
     47 #include <sys/socket.h>
     48 #include <sys/stropts.h>
     49 #include <sys/socketvar.h>
     50 
     51 /*
     52  * This is the loadable module wrapper.
     53  */
     54 #include <sys/modctl.h>
     55 
     56 static zone_key_t sockfs_zone_key;
     57 
     58 static vfsdef_t vfw = {
     59 	VFSDEF_VERSION,
     60 	"sockfs",
     61 	sockinit,
     62 	0,
     63 	NULL
     64 };
     65 
     66 extern struct mod_ops mod_fsops;
     67 
     68 /*
     69  * Module linkage information for the kernel.
     70  */
     71 static struct modlfs modlfs = {
     72 	&mod_fsops, "filesystem for sockfs", &vfw
     73 };
     74 
     75 static struct modlinkage modlinkage = {
     76 	MODREV_1, (void *)&modlfs, NULL
     77 };
     78 
     79 int
     80 _init(void)
     81 {
     82 	int ret;
     83 
     84 	/*
     85 	 * We want to be informed each time a zone is created or
     86 	 * destroyed in the kernel, so we can maintain per-zone
     87 	 * kstat. sock_kstat_init() will also be called for the
     88 	 * global zone, without us having to special case it here.
     89 	 */
     90 	zone_key_create(&sockfs_zone_key,
     91 	    sock_kstat_init, NULL, sock_kstat_fini);
     92 
     93 	if ((ret = mod_install(&modlinkage)) != 0) {
     94 		(void) zone_key_delete(sockfs_zone_key);
     95 	}
     96 
     97 	return (ret);
     98 }
     99 
    100 int
    101 _info(struct modinfo *modinfop)
    102 {
    103 	return (mod_info(&modlinkage, modinfop));
    104 }
    105 
    106 int
    107 _fini(void)
    108 {
    109 	/* zone_key_delete(sockfs_zone_key); - if we were ever to be unloaded */
    110 
    111 	return (EBUSY);
    112 }
    113 
    114 /*
    115  * N.B.
    116  * No _fini routine. This module cannot be unloaded once loaded.
    117  * The NO_UNLOAD_STUB in modstub.s must change if this module ever
    118  * is modified to become unloadable.
    119  */
    120