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      1 /*	$NetBSD: rumpnfsd.c,v 1.11 2020/06/17 00:16:21 kamil Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2010 The NetBSD Foundation, Inc.
      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
     16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/types.h>
     29 
     30 #include <dlfcn.h>
     31 #include <err.h>
     32 #include <errno.h>
     33 #include <pthread.h>
     34 #include <semaphore.h>
     35 #include <stdio.h>
     36 #include <stdlib.h>
     37 #include <string.h>
     38 #include <syslog.h>
     39 #include <unistd.h>
     40 #include <rpc/rpc.h>
     41 
     42 void *mountd_main(void *);
     43 void *rpcbind_main(void *);
     44 int nfsd_main(int, char **);
     45 
     46 sem_t gensem;
     47 
     48 #define RUMPNFSD_NOATF
     49 #include "../../../net/config/netconfig.c"
     50 #include "../../common/h_fsmacros.h"
     51 #include "svc_fdset.h"
     52 
     53 #include <rump/rump.h>
     54 #include <rump/rump_syscallshotgun.h>
     55 #include <rump/rump_syscalls.h>
     56 
     57 int
     58 main(int argc, char *argv[])
     59 {
     60 	const char *ethername, *ethername_ro;
     61 	const char *serveraddr, *serveraddr_ro;
     62 	const char *netmask;
     63 	const char *exportpath;
     64 	const char *imagename;
     65 	char ifname[IFNAMSIZ], ifname_ro[IFNAMSIZ];
     66 	void *fsarg;
     67 	pthread_t t;
     68 	int rv;
     69 
     70 	/* use defaults? */
     71 	if (argc == 1) {
     72 		ethername = "etherbus";
     73 		ethername_ro = "etherbus_ro";
     74 		serveraddr = "10.3.2.1";
     75 		serveraddr_ro = "10.4.2.1";
     76 		netmask = "255.255.255.0";
     77 		exportpath = "/myexport";
     78 		imagename = "ffs.img";
     79 	} else {
     80 		ethername = argv[1];
     81 		ethername_ro = argv[2];
     82 		serveraddr = argv[3];
     83 		serveraddr_ro = argv[4];
     84 		netmask = argv[5];
     85 		exportpath = argv[6];
     86 		imagename = argv[7];
     87 	}
     88 
     89 	rump_init();
     90 	svc_fdset_init(SVC_FDSET_MT);
     91 
     92 	rv = rump_pub_etfs_register("/etc/exports", "./exports", RUMP_ETFS_REG);
     93 	if (rv) {
     94 		errx(1, "register /etc/exports: %s", strerror(rv));
     95 	}
     96 
     97 	/* mini-mtree for mountd */
     98 	static const char *const dirs[] = { "/var", "/var/run", "/var/db" };
     99 	for (size_t i = 0; i < __arraycount(dirs); i++)
    100 		if (rump_sys_mkdir(dirs[i], 0777) == -1)
    101 			err(1, "can't mkdir `%s'", dirs[i]);
    102 
    103 	if (ffs_fstest_newfs(NULL, &fsarg,
    104 	    imagename, FSTEST_IMGSIZE, NULL) != 0)
    105 		err(1, "newfs failed");
    106 	if (ffs_fstest_mount(NULL, fsarg, exportpath, 0) != 0)
    107 		err(1, "mount failed");
    108 
    109 #if 0
    110 	/*
    111 	 * Serve from host instead of dedicated mount?
    112 	 * THIS IS MORE EVIL THAN MURRAY THE DEMONIC TALKING SKULL!
    113 	 */
    114 
    115 	if (ukfs_modload("/usr/lib/librumpfs_syspuffs.so") < 1)
    116 		errx(1, "modload");
    117 
    118 	mount_syspuffs_parseargs(__arraycount(pnullarg), pnullarg,
    119 	    &args, &mntflags, canon_dev, canon_dir);
    120 	if ((ukfs = ukfs_mount(MOUNT_PUFFS, "/", UKFS_DEFAULTMP, MNT_RDONLY,
    121 	    &args, sizeof(args))) == NULL)
    122 		err(1, "mount");
    123 
    124 	if (ukfs_modload("/usr/lib/librumpfs_nfsserver.so") < 1)
    125 		errx(1, "modload");
    126 #endif
    127 
    128 	if (sem_init(&gensem, 1, 0) == -1)
    129 		err(1, "gensem init");
    130 
    131 	/* create interface */
    132 	netcfg_rump_makeshmif(ethername, ifname);
    133 	netcfg_rump_if(ifname, serveraddr, netmask);
    134 
    135 	netcfg_rump_makeshmif(ethername_ro, ifname_ro);
    136 	netcfg_rump_if(ifname_ro, serveraddr_ro, netmask);
    137 
    138 	/*
    139 	 * No syslogging, thanks.
    140 	 * XXX: "0" does not modify the mask, so pick something
    141 	 * which is unlikely to cause any logging
    142 	 */
    143 	setlogmask(0x10000000);
    144 
    145 	if (pthread_create(&t, NULL, rpcbind_main, NULL) == -1)
    146 		err(1, "rpcbind");
    147 	sem_wait(&gensem);
    148 
    149 	if (pthread_create(&t, NULL, mountd_main, NULL) == -1)
    150 		err(1, "mountd");
    151 	sem_wait(&gensem);
    152 
    153 	rv = 0;
    154 	/* signal the other process we're almost done */
    155 	if (write(3, &rv, 4) != 4)
    156 		errx(1, "magic write failed");
    157 
    158 	{
    159 	char *nfsargv[] = { __UNCONST("nfsd"), NULL };
    160 	nfsd_main(1, nfsargv);
    161 	}
    162 	/*NOTREACHED*/
    163 
    164 	return 0;
    165 }
    166