rump_lfs.c revision 1.18 
1/*	$NetBSD: rump_lfs.c,v 1.18 2015/08/02 18:11:57 dholland 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 <puffs.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <unistd.h>
39
40#include <rump/rump.h>
41#include <rump/p2k.h>
42#include <rump/ukfs.h>
43
44#include "mount_lfs.h"
45
46static void *
47cleaner(void *arg)
48{
49	const char *the_argv[7];
50
51	the_argv[0] = "megamaid";
52	the_argv[1] = "-D"; /* don't fork() & detach */
53	the_argv[2] = arg;
54
55	lfs_cleaner_main(3, __UNCONST(the_argv));
56
57	return NULL;
58}
59
60int
61main(int argc, char *argv[])
62{
63	struct ulfs_args args;
64	char canon_dev[UKFS_DEVICE_MAXPATHLEN], canon_dir[MAXPATHLEN];
65	char rawdev[MAXPATHLEN];
66	struct p2k_mount *p2m;
67	pthread_t cleanerthread;
68	struct ukfs_part *part;
69	int mntflags;
70	int rv;
71
72	setprogname(argv[0]);
73	puffs_unmountonsignal(SIGINT, true);
74	puffs_unmountonsignal(SIGTERM, true);
75
76	if (argc >= 3) {
77		UKFS_DEVICE_ARGVPROBE(&part);
78		if (part != ukfs_part_none) {
79			errx(1, "lfs does not currently support "
80			    "embedded partitions");
81		}
82	}
83	mount_lfs_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
84
85	/* Reset getopt for lfs_cleaner_main.  */
86	optreset = 1;
87	optind = 1;
88
89	p2m = p2k_init(0);
90	if (!p2m)
91		err(1, "init p2k");
92	/*
93	 * XXX: this particular piece inspired by the cleaner code.
94	 * obviously FIXXXME along with the cleaner.
95	 */
96	sprintf(rawdev, "/dev/r%s", canon_dev+5);
97	rump_pub_etfs_register(rawdev, canon_dev, RUMP_ETFS_CHR);
98
99	/*
100	 * We basically have two choices:
101	 *  1) run the cleaner in another process and do rump ipc syscalls
102	 *  2) run it off a thread in this process and do rump syscalls
103	 *     as function calls.
104	 *
105	 * opt for "2" for now
106	 */
107#ifdef CLEANER_TESTING
108	ukfs_mount(MOUNT_LFS, canon_dev, canon_dir, mntflags,
109	    &args, sizeof(args));
110	cleaner(canon_dir);
111#endif
112	if (p2k_setup_diskfs(p2m, MOUNT_LFS, canon_dev, part, canon_dir,
113	    mntflags, &args, sizeof(args)) == -1)
114		err(1, "mount");
115	ukfs_part_release(part);
116
117#ifndef CLEANER_TESTING
118	if ((mntflags & MNT_RDONLY) == 0) {
119		if (pthread_create(&cleanerthread, NULL,
120		    cleaner, canon_dir) == -1)
121			err(1, "cannot start cleaner");
122	}
123#endif
124
125	rv = p2k_mainloop(p2m);
126	if (rv == -1)
127		err(1, "fs service");
128
129	return 0;
130}
131