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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * 31 * cfsfstype.c 32 * 33 * Cache FS admin utility. Used to glean information out of the 34 * rootfs, frontfs, and backfs variables in the kernel. 35 */ 36 37 #include <locale.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 #include <string.h> 42 #include <errno.h> 43 #include <limits.h> 44 #include <dirent.h> 45 #include <ftw.h> 46 #include <fcntl.h> 47 #include <ctype.h> 48 #include <stdarg.h> 49 #include <sys/param.h> 50 #include <sys/types.h> 51 #include <sys/filio.h> 52 #include <sys/stat.h> 53 #include <sys/statvfs.h> 54 #include <sys/fs/cachefs_fs.h> 55 #include <sys/fs/cachefs_dir.h> 56 57 58 static void pr_err(char *fmt, ...); 59 static void usage(char *); 60 61 /* 62 * 63 * main 64 * 65 * Description: 66 * Main routine for the cfsfstype program. 67 * Arguments: 68 * argc number of command line arguments 69 * argv command line arguments 70 * Returns: 71 * Returns 0 for failure, > 0 for an error. 72 * Preconditions: 73 */ 74 75 int 76 main(int argc, char **argv) 77 { 78 int c; 79 int nflag = 0; 80 struct statvfs64 svb; 81 int fd; 82 83 /* verify root running command */ 84 if (getuid() != 0) { 85 pr_err(gettext("must be run by root")); 86 return (1); 87 } 88 89 (void) setlocale(LC_ALL, ""); 90 #if !defined(TEXT_DOMAIN) 91 #define TEXT_DOMAIN "SYS_TEST" 92 #endif 93 (void) textdomain(TEXT_DOMAIN); 94 95 /* parse the command line arguments */ 96 while ((c = getopt(argc, argv, "n")) != EOF) { 97 switch (c) { 98 99 case 'n': 100 nflag = 1; 101 break; 102 103 default: 104 usage(gettext("illegal option")); 105 return (1); 106 } 107 } 108 argc -= optind; 109 argv += optind; 110 if (argc > 1) { 111 usage(gettext("too many file names specified")); 112 return (1); 113 } 114 115 /* if just path is specified, just statvfs it */ 116 if (!nflag) { 117 if (argc != 1) { 118 usage(gettext("no file name")); 119 return (1); 120 } 121 if (statvfs64(*argv, &svb) < 0) { 122 pr_err(gettext("Cannot open %s: %s"), *argv, 123 strerror(errno)); 124 return (1); 125 } 126 (void) printf("%s\n", svb.f_basetype); 127 return (0); 128 } 129 130 fd = open("/", O_RDONLY); 131 if (fd < 0) { 132 perror(gettext("Open of root directory")); 133 return (1); 134 } 135 136 if (argc == 1) { 137 close(fd); 138 fd = open(*argv, O_RDONLY); 139 if (fd < 0) { 140 perror(gettext("open of specified directory")); 141 return (1); 142 } 143 } 144 145 if (ioctl(fd, _FIOSTOPCACHE)) { 146 perror(gettext("Convert ioctl fault")); 147 return (1); 148 } 149 return (0); 150 } 151 152 /* 153 * 154 * usage 155 * 156 * Description: 157 * Prints a usage message for this utility. 158 * Arguments: 159 * msgp message to include with the usage message 160 * Returns: 161 * Preconditions: 162 * precond(msgp) 163 */ 164 165 static void 166 usage(char *msgp) 167 { 168 fprintf(stderr, gettext("cfsfstype: %s\n"), msgp); 169 fprintf(stderr, gettext("usage: cfsfstype file\n")); 170 } 171 172 /* 173 * 174 * pr_err 175 * 176 * Description: 177 * Prints an error message to stderr. 178 * Arguments: 179 * fmt printf style format 180 * ... arguments for fmt 181 * Returns: 182 * Preconditions: 183 * precond(fmt) 184 */ 185 186 static void 187 pr_err(char *fmt, ...) 188 { 189 va_list ap; 190 191 va_start(ap, fmt); 192 (void) fprintf(stderr, gettext("cfsfstype: ")); 193 (void) vfprintf(stderr, fmt, ap); 194 (void) fprintf(stderr, "\n"); 195 va_end(ap); 196 }