126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/* $NetBSD: pnullfs.c,v 1.18 2008/11/26 14:03:48 pooka Exp $ */
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/*
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* Copyright (c) 2007 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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/*
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* pnullfs: puffs nullfs example
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*/
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#include <err.h>
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#include <puffs.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static void usage(void);
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static void
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usage()
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{
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errx(1, "usage: %s [-s] [-o mntopts] nullpath mountpath",
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getprogname());
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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 puffs_usermount *pu;
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struct puffs_ops *pops;
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struct puffs_pathobj *po_root;
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struct puffs_node *pn_root;
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struct stat sb;
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mntoptparse_t mp;
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int mntflags, pflags;
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int ch;
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int detach;
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setprogname(argv[0]);
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if (argc < 3)
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usage();
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pflags = mntflags = 0;
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detach = 1;
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while ((ch = getopt(argc, argv, "o:s")) != -1) {
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switch (ch) {
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case 'o':
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mp = getmntopts(optarg, puffsmopts, &mntflags, &pflags);
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if (mp == NULL)
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err(1, "getmntopts");
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freemntopts(mp);
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break;
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case 's':
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detach = 0;
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break;
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}
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}
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pflags |= PUFFS_FLAG_BUILDPATH;
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argv += optind;
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argc -= optind;
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if (pflags & PUFFS_FLAG_OPDUMP)
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detach = 0;
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if (argc != 2)
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usage();
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if (lstat(argv[0], &sb) == -1)
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err(1, "stat %s", argv[0]);
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if ((sb.st_mode & S_IFDIR) == 0)
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errx(1, "%s is not a directory", argv[0]);
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PUFFSOP_INIT(pops);
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puffs_null_setops(pops);
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if ((pu = puffs_init(pops, argv[0], "pnullfs", NULL, pflags)) == NULL)
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err(1, "init");
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pn_root = puffs_pn_new(pu, NULL);
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if (pn_root == NULL)
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err(1, "puffs_pn_new");
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puffs_setroot(pu, pn_root);
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puffs_setfhsize(pu, 0, PUFFS_FHFLAG_PASSTHROUGH);
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po_root = puffs_getrootpathobj(pu);
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if (po_root == NULL)
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err(1, "getrootpathobj");
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po_root->po_path = argv[0];
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po_root->po_len = strlen(argv[0]);
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puffs_stat2vattr(&pn_root->pn_va, &sb);
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if (detach)
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if (puffs_daemon(pu, 1, 1) == -1)
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err(1, "puffs_daemon");
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if (puffs_mount(pu, argv[1], mntflags, pn_root) == -1)
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err(1, "puffs_mount");
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if (puffs_mainloop(pu) == -1)
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err(1, "mainloop");
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return 0;
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}
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