72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/* $NetBSD: rump_tmpfs.c,v 1.4 2009/12/17 14:06:38 pooka Exp $ */
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/*
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* Copyright (c) 2008 Antti Kantee. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <fs/tmpfs/tmpfs_args.h>
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#include <err.h>
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#include <puffs.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <rump/p2k.h>
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#include "mount_tmpfs.h"
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/*
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* tmpfs has a slight "issue" with file content storage. Since it
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* stores data in memory, we will end up using 2x the RAM for
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* storage if we cache in puffs vfs. If we don't, we need to take
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* the slow path from the kernel to the file server every time the
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* file is accessed. It's either suck or suck. However, rump_tmpfs
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* will not be used in real life, so this is hardly a release-stopping
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* issue of catastrophic proportions. For now we opt for un-double
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* storage (PUFFS_KFLAG_NOCACHE_PAGE).
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*/
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int
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main(int argc, char *argv[])
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{
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struct tmpfs_args args;
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char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
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int mntflags;
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int rv;
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setprogname(argv[0]);
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mount_tmpfs_parseargs(argc, argv, &args, &mntflags,
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canon_dev, canon_dir);
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rv = p2k_run_fs(MOUNT_TMPFS, canon_dev, canon_dir, mntflags,
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&args, sizeof(args), PUFFS_KFLAG_NOCACHE_PAGE);
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if (rv)
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err(1, "mount");
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return 0;
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}
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