1 /* $NetBSD: rump_tmpfs.c,v 1.4 2009/12/17 14:06:38 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 <fs/tmpfs/tmpfs_args.h>
32
33 #include <err.h>
34 #include <puffs.h>
35 #include <stdlib.h>
36 #include <unistd.h>
37
38 #include <rump/p2k.h>
39
40 #include "mount_tmpfs.h"
41
42 /*
43 * tmpfs has a slight "issue" with file content storage. Since it
44 * stores data in memory, we will end up using 2x the RAM for
45 * storage if we cache in puffs vfs. If we don't, we need to take
46 * the slow path from the kernel to the file server every time the
47 * file is accessed. It's either suck or suck. However, rump_tmpfs
48 * will not be used in real life, so this is hardly a release-stopping
49 * issue of catastrophic proportions. For now we opt for un-double
50 * storage (PUFFS_KFLAG_NOCACHE_PAGE).
51 */
52
53 int
main(int argc,char * argv[])54 main(int argc, char *argv[])
55 {
56 struct tmpfs_args args;
57 char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
58 int mntflags;
59 int rv;
60
61 setprogname(argv[0]);
62
63 mount_tmpfs_parseargs(argc, argv, &args, &mntflags,
64 canon_dev, canon_dir);
65 rv = p2k_run_fs(MOUNT_TMPFS, canon_dev, canon_dir, mntflags,
66 &args, sizeof(args), PUFFS_KFLAG_NOCACHE_PAGE);
67 if (rv)
68 err(1, "mount");
69
70 return 0;
71 }
72