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mount_efs.c revision 1.6 
      1 /*	$NetBSD: mount_efs.c,v 1.6 2024/11/03 10:43:27 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2006 Stephen M. Rumble <rumble (at) ephemeral.org>
      5  *
      6  * Permission to use, copy, modify, and distribute this software for any
      7  * purpose with or without fee is hereby granted, provided that the above
      8  * copyright notice and this permission notice appear in all copies.
      9  *
     10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     17  */
     18 
     19 #include <sys/param.h>
     20 #include <sys/mount.h>
     21 #include <fs/efs/efs.h>
     22 #include <fs/efs/efs_sb.h>
     23 #include <fs/efs/efs_mount.h>
     24 
     25 #include <err.h>
     26 #include <stdio.h>
     27 #include <stdlib.h>
     28 
     29 #include <string.h>
     30 #include <unistd.h>
     31 
     32 #include <mntopts.h>
     33 
     34 #include "mountprog.h"
     35 #include "mount_efs.h"
     36 
     37 static const struct mntopt mopts[] = {
     38 	MOPT_STDOPTS,
     39 	MOPT_GETARGS,
     40 	MOPT_FORCE,
     41 	MOPT_NULL
     42 };
     43 
     44 __dead static void	usage(void);
     45 
     46 static void
     47 usage(void)
     48 {
     49 
     50 	fprintf(stderr, "usage: %s [-o options] special node\n", getprogname());
     51 	exit(1);
     52 }
     53 
     54 void
     55 mount_efs_parseargs(int argc, char **argv,
     56 	struct efs_args *args, int *mntflags,
     57 	char *canon_dev, char *canon_dir)
     58 {
     59 	int ch;
     60 	mntoptparse_t mp;
     61 
     62 	memset(args, 0, sizeof(*args));
     63 	*mntflags = 0;
     64 
     65 	while ((ch = getopt(argc, argv, "o:")) != -1) {
     66 		switch (ch) {
     67 		case 'o':
     68 			mp = getmntopts(optarg, mopts, mntflags, NULL);
     69 			if (mp == NULL)
     70 				err(1, "getmntopts");
     71 			freemntopts(mp);
     72 			break;
     73 
     74 		default:
     75 			usage();
     76 		}
     77 	}
     78 	argc -= optind;
     79 	argv += optind;
     80 
     81 	if (argc != 2)
     82 		usage();
     83 
     84 	pathadj(argv[0], canon_dev);
     85 	pathadj(argv[1], canon_dir);
     86 
     87 	args->fspec = canon_dev;
     88 	args->version = EFS_MNT_VERSION;
     89 }
     90 
     91 int
     92 mount_efs(int argc, char **argv)
     93 {
     94 	char special[MAXPATHLEN], node[MAXPATHLEN];
     95 	struct efs_args args;
     96 	int mntflags;
     97 
     98 	mount_efs_parseargs(argc, argv, &args, &mntflags, special, node);
     99 
    100 	if (mount(MOUNT_EFS, node, mntflags, &args, sizeof args) == -1)
    101 		err(EXIT_FAILURE, "%s on %s", special, node);
    102 
    103 	return (0);
    104 }
    105 
    106 #ifndef MOUNT_NOMAIN
    107 int
    108 main(int argc, char **argv)
    109 {
    110 
    111 	setprogname(argv[0]);
    112 	return (mount_efs(argc, argv));
    113 }
    114 #endif
    115