1 /* $OpenBSD: mount_ext2fs.c,v 1.19 2019/06/28 13:32:44 deraadt Exp $ */ 2 /* $NetBSD: mount_ffs.c,v 1.3 1996/04/13 01:31:19 jtc Exp $ */ 3 4 /*- 5 * Copyright (c) 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/mount.h> 35 36 #include <err.h> 37 #include <errno.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <limits.h> 43 44 #include "mntopts.h" 45 46 void ext2fs_usage(void); 47 48 static const struct mntopt mopts[] = { 49 MOPT_STDOPTS, 50 MOPT_UPDATE, 51 { NULL } 52 }; 53 54 int 55 main(int argc, char *argv[]) 56 { 57 struct ufs_args args; /* XXX ffs_args */ 58 int ch, mntflags; 59 char fs_name[PATH_MAX], *errcause; 60 61 mntflags = 0; 62 optind = optreset = 1; /* Reset for parse of new argv. */ 63 while ((ch = getopt(argc, argv, "o:")) != -1) 64 switch (ch) { 65 case 'o': 66 getmntopts(optarg, mopts, &mntflags); 67 break; 68 case '?': 69 default: 70 ext2fs_usage(); 71 } 72 argc -= optind; 73 argv += optind; 74 75 if (argc != 2) 76 ext2fs_usage(); 77 78 args.fspec = argv[0]; /* The name of the device file. */ 79 if (realpath(argv[1], fs_name) == NULL) /* The mount point. */ 80 err(1, "realpath %s", argv[1]); 81 82 #define DEFAULT_ROOTUID -2 83 args.export_info.ex_root = DEFAULT_ROOTUID; 84 if (mntflags & MNT_RDONLY) 85 args.export_info.ex_flags = MNT_EXRDONLY; 86 else 87 args.export_info.ex_flags = 0; 88 89 if (mount(MOUNT_EXT2FS, fs_name, mntflags, &args) == -1) { 90 switch (errno) { 91 case EMFILE: 92 errcause = "mount table full"; 93 break; 94 case EINVAL: 95 errcause = 96 "specified device does not match mounted device"; 97 break; 98 case EOPNOTSUPP: 99 errcause = "filesystem not supported by kernel"; 100 break; 101 default: 102 errcause = strerror(errno); 103 break; 104 } 105 errx(1, "%s on %s: %s", args.fspec, fs_name, errcause); 106 } 107 exit(0); 108 } 109 110 void 111 ext2fs_usage(void) 112 { 113 (void)fprintf(stderr, 114 "usage: mount_ext2fs [-o options] special node\n"); 115 exit(1); 116 } 117