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mount_puffs.c revision 1.3 
      1 /*	$NetBSD: mount_puffs.c,v 1.3 2010/05/21 11:59:38 pooka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2010 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 /*
     29  * This is to support -o getargs without having to replicate
     30  * it in every file server.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 #ifndef lint
     35 __RCSID("$NetBSD: mount_puffs.c,v 1.3 2010/05/21 11:59:38 pooka Exp $");
     36 #endif /* !lint */
     37 
     38 #include <sys/param.h>
     39 #include <sys/mount.h>
     40 
     41 #include <fs/puffs/puffs_msgif.h>
     42 
     43 #include <err.h>
     44 #include <mntopts.h>
     45 #include <stdio.h>
     46 #include <stdlib.h>
     47 #include <unistd.h>
     48 
     49 const struct mntopt getargmopt[] = {
     50 	MOPT_GETARGS,
     51 	MOPT_NULL,
     52 };
     53 
     54 static void
     55 usage(void)
     56 {
     57 
     58 	fprintf(stderr, "usage: %s -o getargs spec dir\n", getprogname());
     59 	exit(1);
     60 }
     61 
     62 int
     63 main(int argc, char *argv[])
     64 {
     65 	const char *vtypes[] = { VNODE_TYPES };
     66 	struct puffs_kargs kargs;
     67 	mntoptparse_t mp;
     68 	int mntflags, f;
     69 	int ch;
     70 
     71 	if (argc < 3)
     72 		usage();
     73 
     74 	mntflags = 0;
     75 	while ((ch = getopt(argc, argv, "o:")) != -1) {
     76 		switch (ch) {
     77 		case 'o':
     78 			mp = getmntopts(optarg, getargmopt, &mntflags, &f);
     79 			if (mp == NULL)
     80 				err(1, "getmntopts");
     81 			freemntopts(mp);
     82 			break;
     83 		default:
     84 			usage();
     85 		}
     86 	}
     87 	argc -= optind;
     88 	argv += optind;
     89 
     90 	if (argc != 2)
     91 		usage();
     92 
     93 	if (mntflags != MNT_GETARGS)
     94 		usage();
     95 
     96 	if (mount(MOUNT_PUFFS, argv[1], mntflags, &kargs, sizeof(kargs)) == -1)
     97 		err(1, "mount");
     98 
     99 	printf("version=%d, ", kargs.pa_vers);
    100 	printf("flags=0x%x, ", kargs.pa_flags);
    101 
    102 	printf("root cookie=%p, ", kargs.pa_root_cookie);
    103 	printf("root type=%s", vtypes[kargs.pa_root_vtype]);
    104 
    105 	if (kargs.pa_root_vtype != VDIR)
    106 		printf(", root size=%llu",
    107 		    (unsigned long long)kargs.pa_root_vsize);
    108 	if (kargs.pa_root_vtype == VCHR || kargs.pa_root_vtype == VBLK)
    109 		printf(", root rdev=0x%" PRIx64, (uint64_t)kargs.pa_root_rdev);
    110 	printf("\n");
    111 
    112 	return 0;
    113 }
    114