1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * Copyright (c) 2014 Joyent, Inc. All rights reserved. 26 */ 27 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <libintl.h> 32 #include <errno.h> 33 #include <sys/fstyp.h> 34 #include <sys/fsid.h> 35 #include <sys/mntent.h> 36 #include <sys/mnttab.h> 37 #include <sys/mount.h> 38 #include <sys/signal.h> 39 #include <sys/stat.h> 40 #include <fslib.h> 41 42 #define MNTTYPE_BOOTFS "bootfs" 43 44 static char optbuf[MAX_MNTOPT_STR] = { '\0', }; 45 static int optsize = 0; 46 47 static void 48 usage(void) 49 { 50 (void) fprintf(stderr, 51 "Usage: mount [-Ormq] [-o options] special mountpoint\n"); 52 exit(2); 53 } 54 55 /* 56 * usage: mount [-Ormq] [-o options] special mountp 57 * 58 * This mount program is exec'ed by /usr/sbin/mount if '-F bootfs' is 59 * specified. 60 */ 61 int 62 main(int argc, char *argv[]) 63 { 64 int c; 65 char *special; /* Entity being mounted */ 66 char *mountp; /* Entity being mounted on */ 67 char *savedoptbuf; 68 char *myname; 69 char typename[64]; 70 int flags = 0; 71 int errflag = 0; 72 int qflg = 0; 73 74 myname = strrchr(argv[0], '/'); 75 myname = myname ? myname+1 : argv[0]; 76 (void) snprintf(typename, sizeof (typename), "%s %s", MNTTYPE_BOOTFS, 77 myname); 78 argv[0] = typename; 79 80 while ((c = getopt(argc, argv, "o:rmOq")) != EOF) { 81 switch (c) { 82 case '?': 83 errflag++; 84 break; 85 86 case 'o': 87 if (strlcpy(optbuf, optarg, sizeof (optbuf)) >= 88 sizeof (optbuf)) { 89 (void) fprintf(stderr, 90 gettext("%s: Invalid argument: %s\n"), 91 myname, optarg); 92 return (2); 93 } 94 optsize = strlen(optbuf); 95 break; 96 case 'O': 97 flags |= MS_OVERLAY; 98 break; 99 case 'r': 100 flags |= MS_RDONLY; 101 break; 102 103 case 'm': 104 flags |= MS_NOMNTTAB; 105 break; 106 107 case 'q': 108 qflg = 1; 109 break; 110 111 default: 112 usage(); 113 } 114 } 115 if ((argc - optind != 2) || errflag) { 116 usage(); 117 } 118 special = argv[argc - 2]; 119 mountp = argv[argc - 1]; 120 121 if ((savedoptbuf = strdup(optbuf)) == NULL) { 122 (void) fprintf(stderr, gettext("%s: out of memory\n"), 123 myname); 124 exit(2); 125 } 126 127 if (mount(special, mountp, flags | MS_OPTIONSTR, MNTTYPE_BOOTFS, NULL, 128 0, optbuf, MAX_MNTOPT_STR)) { 129 (void) fprintf(stderr, "mount: "); 130 perror(special); 131 exit(2); 132 } 133 if (optsize && !qflg) { 134 cmp_requested_to_actual_options(savedoptbuf, optbuf, 135 special, mountp); 136 } 137 138 return (0); 139 } 140