1 /* $NetBSD: mount_procfs.c,v 1.21 2007/07/16 17:06:54 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Jan-Simon Pendry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1990, 1992, 1993 Jan-Simon Pendry 37 * 38 * This code is derived from software contributed to Berkeley by 39 * Jan-Simon Pendry. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by the University of 52 * California, Berkeley and its contributors. 53 * 4. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 */ 69 70 #include <sys/cdefs.h> 71 #ifndef lint 72 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\ 73 The Regents of the University of California. All rights reserved.\n"); 74 #endif /* not lint */ 75 76 #ifndef lint 77 #if 0 78 static char sccsid[] = "@(#)mount_procfs.c 8.4 (Berkeley) 4/26/95"; 79 #else 80 __RCSID("$NetBSD: mount_procfs.c,v 1.21 2007/07/16 17:06:54 pooka Exp $"); 81 #endif 82 #endif /* not lint */ 83 84 #include <sys/param.h> 85 #include <sys/mount.h> 86 87 #include <err.h> 88 #include <unistd.h> 89 #include <stdio.h> 90 #include <stdlib.h> 91 #include <string.h> 92 #include <util.h> 93 94 #include <miscfs/procfs/procfs.h> 95 96 #include <mntopts.h> 97 98 static const struct mntopt mopts[] = { 99 MOPT_STDOPTS, 100 MOPT_GETARGS, 101 { "linux", 0, PROCFSMNT_LINUXCOMPAT, 1}, 102 MOPT_NULL, 103 }; 104 105 int mount_procfs(int argc, char **argv); 106 static void usage(void); 107 108 #ifndef MOUNT_NOMAIN 109 int 110 main(int argc, char **argv) 111 { 112 return mount_procfs(argc, argv); 113 } 114 #endif 115 116 int 117 mount_procfs(int argc, char *argv[]) 118 { 119 int ch, mntflags, altflags; 120 struct procfs_args args; 121 char canon_dir[MAXPATHLEN]; 122 mntoptparse_t mp; 123 124 mntflags = altflags = 0; 125 while ((ch = getopt(argc, argv, "o:")) != -1) 126 switch (ch) { 127 case 'o': 128 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 129 if (mp == NULL) 130 err(1, "getmntopts"); 131 freemntopts(mp); 132 break; 133 case '?': 134 default: 135 usage(); 136 } 137 argc -= optind; 138 argv += optind; 139 140 if (argc != 2) 141 usage(); 142 143 if (realpath(argv[1], canon_dir) == NULL) /* Check mounton path */ 144 err(1, "realpath %s", argv[1]); 145 if (strncmp(argv[1], canon_dir, MAXPATHLEN)) { 146 warnx("\"%s\" is a relative path.", argv[1]); 147 warnx("using \"%s\" instead.", canon_dir); 148 } 149 150 args.version = PROCFS_ARGSVERSION; 151 args.flags = altflags; 152 153 if (mount(MOUNT_PROCFS, canon_dir, mntflags, &args, sizeof args) == -1) 154 err(1, "procfs on %s", canon_dir); 155 if (mntflags & MNT_GETARGS) { 156 char buf[1024]; 157 (void)snprintb(buf, sizeof(buf), PROCFSMNT_BITS, args.flags); 158 printf("version=%d, flags=%s\n", args.version, buf); 159 } 160 exit(0); 161 } 162 163 static void 164 usage(void) 165 { 166 (void)fprintf(stderr, 167 "usage: mount_procfs [-o options] /proc mount_point\n"); 168 exit(1); 169 } 170