rump_lfs.c revision 1.8 
1/*	$NetBSD: rump_lfs.c,v 1.8 2009/10/09 16:38:21 pooka Exp $	*/
2
3/*
4 * Copyright (c) 2008 Antti Kantee.  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
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#include <sys/mount.h>
30
31#include <ufs/ufs/ufsmount.h>
32
33#include <err.h>
34#include <pthread.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <unistd.h>
38
39#include <rump/rump.h>
40#include <rump/p2k.h>
41#include <rump/ukfs.h>
42
43#include "mount_lfs.h"
44
45static void *
46cleaner(void *arg)
47{
48	const char *the_argv[7];
49
50	the_argv[0] = "megamaid";
51	the_argv[1] = "-D"; /* don't fork() & detach */
52	the_argv[2] = arg;
53
54	lfs_cleaner_main(3, __UNCONST(the_argv));
55
56	return NULL;
57}
58
59int
60main(int argc, char *argv[])
61{
62	struct ufs_args args;
63	char canon_dev[UKFS_PARTITION_MAXPATHLEN], canon_dir[MAXPATHLEN];
64	char rawdev[MAXPATHLEN];
65	struct p2k_mount *p2m;
66	pthread_t cleanerthread;
67	int mntflags, part;
68	int rv;
69
70	setprogname(argv[0]);
71
72	/*
73	 * Load FFS and LFS already here.  we need both and link set
74	 * lossage does not allow them to be linked on the command line.
75	 */
76	ukfs_init();
77	if (ukfs_modload("librumpfs_ffs.so") != 1)
78		err(1, "modload ffs");
79	if (ukfs_modload("librumpfs_lfs.so") != 1)
80		err(1, "modload lfs");
81
82	UKFS_PARTITION_ARGVPROBE(part);
83	if (part != UKFS_PARTITION_NONE) {
84		errx(1, "lfs does not currently support embedded partitions");
85	}
86	mount_lfs_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
87
88	/*
89	 * XXX: this particular piece inspired by the cleaner code.
90	 * obviously FIXXXME along with the cleaner.
91	 */
92	sprintf(rawdev, "/dev/r%s", canon_dev+5);
93	rump_etfs_register(rawdev, canon_dev, RUMP_ETFS_CHR);
94
95	/*
96	 * We basically have two choices:
97	 *  1) run the cleaner in another process and do rump ipc syscalls
98	 *  2) run it off a thread in this process and do rump syscalls
99	 *     as function calls.
100	 *
101	 * opt for "2" for now
102	 */
103#ifdef CLEANER_TESTING
104	ukfs_mount(MOUNT_LFS, canon_dev, canon_dir, mntflags,
105	    &args, sizeof(args));
106	cleaner(canon_dir);
107#endif
108
109	p2m = p2k_setup_diskfs(MOUNT_LFS, canon_dev, part, canon_dir, mntflags,
110	    &args, sizeof(args), 0);
111	if (!p2m)
112		err(1, "mount");
113
114#ifndef CLEANER_TESTING
115	if ((mntflags & MNT_RDONLY) == 0) {
116		if (pthread_create(&cleanerthread, NULL,
117		    cleaner, canon_dir) == -1)
118			err(1, "cannot start cleaner");
119	}
120#endif
121
122	rv = p2k_mainloop(p2m);
123	if (rv == -1)
124		err(1, "fs service");
125
126	return 0;
127}
128