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      1 /* $NetBSD: mount_nilfs.c,v 1.4 2019/10/16 21:52:22 maya Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2008, 2009 Reinoud Zandijk
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 
     30 #include <sys/cdefs.h>
     31 #ifndef lint
     32 __RCSID("$NetBSD: mount_nilfs.c,v 1.4 2019/10/16 21:52:22 maya Exp $");
     33 #endif /* not lint */
     34 
     35 
     36 #include <sys/param.h>
     37 #include <sys/mount.h>
     38 #include <sys/stat.h>
     39 
     40 #include <assert.h>
     41 #include <err.h>
     42 #include <errno.h>
     43 #include <grp.h>
     44 #include <pwd.h>
     45 #include <stdio.h>
     46 #include <stdlib.h>
     47 #include <string.h>
     48 #include <time.h>
     49 #include <unistd.h>
     50 #include <util.h>
     51 
     52 
     53 /* mount specific options */
     54 #include <fs/nilfs/nilfs_mount.h>
     55 #include <mntopts.h>
     56 
     57 #include "mountprog.h"
     58 #include "mount_nilfs.h"
     59 
     60 /* options to pass on to the `mount' call */
     61 static const struct mntopt mopts[] = {
     62 	MOPT_STDOPTS,		/* `normal' options		*/
     63 	MOPT_ASYNC,		/* default			*/
     64 	MOPT_NOATIME,		/* dont update access times	*/
     65 	MOPT_RELATIME,		/* update access times on change*/
     66 	MOPT_UPDATE,		/* not yet supported		*/
     67 	MOPT_GETARGS,		/* printing			*/
     68 	MOPT_NULL,
     69 };
     70 
     71 
     72 /* prototypes */
     73 static void	usage(void) __dead;
     74 
     75 
     76 /* code */
     77 
     78 static void
     79 usage(void)
     80 {
     81 	(void)fprintf(stderr, "Usage: %s [-o options] [-c cpno] "
     82 	    "[-t gmtoff] special node\n", getprogname());
     83 	exit(EXIT_FAILURE);
     84 }
     85 
     86 
     87 #ifndef MOUNT_NOMAIN
     88 int
     89 main(int argc, char **argv)
     90 {
     91 
     92 	setprogname(argv[0]);
     93 	return mount_nilfs(argc, argv);
     94 }
     95 #endif
     96 
     97 
     98 /* main routine */
     99 void
    100 mount_nilfs_parseargs(int argc, char **argv,
    101 	struct nilfs_args *args, int *mntflags,
    102 	char *canon_dev, char *canon_dir)
    103 {
    104 	struct tm *tm;
    105 	time_t	 now;
    106 	int	 ch, set_gmtoff;
    107 	mntoptparse_t mp;
    108 
    109 	/* initialise */
    110 	(void)memset(args, 0, sizeof(*args));
    111 
    112 	set_gmtoff = *mntflags = 0;
    113 
    114 	while ((ch = getopt(argc, argv, "c:o:t:")) != -1) {
    115 		switch (ch) {
    116 		case 'o' :
    117 			/* process generic mount options */
    118 			mp = getmntopts(optarg, mopts, mntflags, 0);
    119 			if (mp == NULL)
    120 				err(EXIT_FAILURE, "getmntopts");
    121 			freemntopts(mp);
    122 			break;
    123 		case 'c' :
    124 			args->cpno = a_num(optarg, "checkpoint number");
    125 			break;
    126 		case 't' :
    127 			args->gmtoff = a_num(optarg, "gmtoff");
    128 			set_gmtoff  = 1;
    129 			break;
    130 		default  :
    131 			usage();
    132 			/* NOTREACHED */
    133 		}
    134 	}
    135 
    136 	if (optind + 2 != argc)
    137 		usage();
    138 
    139 	if (!set_gmtoff) {
    140 		/* use user's time zone as default */
    141 		(void)time(&now);
    142 		tm = localtime(&now);
    143 		args->gmtoff = tm->tm_gmtoff;
    144 	}
    145 
    146 	/* get device and directory specifier */
    147 	pathadj(argv[optind], canon_dev);
    148 	pathadj(argv[optind+1], canon_dir);
    149 
    150 	args->version = NILFSMNT_VERSION;
    151 	args->fspec = canon_dev;
    152 }
    153 
    154 int
    155 mount_nilfs(int argc, char *argv[])
    156 {
    157 	struct nilfs_args args;
    158 	char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
    159 	int mntflags;
    160 
    161 	mount_nilfs_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
    162 
    163 	/* mount it! :) */
    164 	if (mount(MOUNT_NILFS, canon_dir, mntflags, &args, sizeof args) == -1)
    165 		err(EXIT_FAILURE, "Cannot mount %s on %s", canon_dev,canon_dir);
    166 
    167 	if (mntflags & MNT_GETARGS) {
    168 		char buf[1024];
    169 
    170 		(void)snprintb(buf, sizeof(buf), NILFSMNT_BITS,
    171 		    (uint64_t)args.nilfsmflags);
    172 		(void)printf("gmtoffset = %d, cpno = %"PRIu64", flags = %s\n",
    173 		    args.gmtoff, args.cpno, buf);
    174 	}
    175 
    176 	return EXIT_SUCCESS;
    177 }
    178