1#!/bin/sh 2# 3# CDDL HEADER START 4# 5# The contents of this file are subject to the terms of the 6# Common Development and Distribution License (the "License"). 7# You may not use this file except in compliance 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 2008 Sun Microsystems, Inc. All rights reserved. 24# Use is subject to license terms. 25# 26# Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T. 27# All rights reserved. 28# 29# 30#ident "%Z%%M% %I% %E% SMI" 31 32vfstab=${vfstab:=/etc/vfstab} 33 34# 35# readvfstab mount_point 36# -> (special, fsckdev, mountp, fstype, fsckpass, automnt, mntopts) 37# 38# A vfstab-like input stream is scanned for the mount point specified 39# as $1. Returns the fields of vfstab in the following shell 40# variables: 41# 42# special block device 43# fsckdev raw device 44# mountp mount point (must match $1, if found) 45# fstype file system type 46# fsckpass fsck(1M) pass number 47# automnt automount flag (yes or no) 48# mntopts file system-specific mount options. 49# 50# If the mount point can not be found in the standard input stream, 51# then all fields are set to empty values. This function assumes that 52# stdin is already set /etc/vfstab (or other appropriate input 53# stream). 54# 55readvfstab() { 56 while read special fsckdev mountp fstype fsckpass automnt mntopts; do 57 case "$special" in 58 '' ) # Ignore empty lines. 59 continue 60 ;; 61 62 '#'* ) # Ignore comment lines. 63 continue 64 ;; 65 66 '-') # Ignore "no-action" lines. 67 continue 68 ;; 69 esac 70 71 [ "x$mountp" = "x$1" ] && break 72 done 73} 74 75readswapdev() { 76 while read special fsckdev mountp fstype fsckpass automnt mntopts; do 77 # Ignore comments, empty lines, and no-action lines 78 case "$special" in 79 '#'* | '' | '-') continue;; 80 esac 81 82 [ "$fstype" != swap ] && continue 83 84 [ "x$special" = "x$1" ] && break 85 done 86} 87 88# 89# readmnttab mount_point 90# -> (special, mountp, fstype, mntopts, mnttime) 91# 92# A mnttab-like input stream is scanned for the mount point specified 93# as $1. Returns the fields of mnttab in the following shell 94# variables: 95# 96# special block device 97# mountp mount point (must match $1, if found) 98# fstype file system type 99# mntopts file system-specific mount options. 100# mnttime time at which file system was mounted 101# 102# If the mount point can not be found in the standard input stream, 103# then all fields are set to empty values. This function assumes that 104# stdin is already set to /etc/mnttab (or other appropriate input 105# stream). 106# 107readmnttab() { 108 while read special mountp fstype mntopts mnttime; do 109 [ "x$mountp" = "x$1" ] && break 110 done 111} 112 113cecho() { 114 echo $* 115 echo $* >/dev/msglog 116} 117 118# 119# checkmessage raw_device fstype mountpoint 120# checkmessage2 raw_device fstype mountpoint 121# 122# Two simple auxilary routines to the shell function checkfs. Both 123# display instructions for a manual file system check. 124# 125checkmessage() { 126 cecho "" 127 cecho "WARNING - Unable to repair the $3 filesystem. Run fsck" 128 cecho "manually (fsck -F $2 $1)." 129 cecho "" 130} 131 132checkmessage2() { 133 cecho "" 134 cecho "WARNING - fatal error from fsck - error $4" 135 cecho "Unable to repair the $3 filesystem. Run fsck manually" 136 cecho "(fsck -F $2 $1)." 137 cecho "" 138} 139 140# 141# checkfs raw_device fstype mountpoint 142# 143# Check the file system specified. The return codes from fsck have the 144# following meanings. 145# 146# 0 file system is unmounted and okay 147# 32 file system is unmounted and needs checking (fsck -m only) 148# 33 file system is already mounted 149# 34 cannot stat device 150# 35 modified root or something equally dangerous 151# 36 uncorrectable errors detected - terminate normally (4.1 code 8) 152# 37 a signal was caught during processing (4.1 exit 12) 153# 39 uncorrectable errors detected - terminate rightaway (4.1 code 8) 154# 40 for root, same as 0 (used here to remount root) 155# 156checkfs() { 157 # skip checking if the fsckdev is "-" 158 [ "x$1" = x- ] && return 159 160 # if fsck isn't present, it is probably because either the mount of 161 # /usr failed or the /usr filesystem is badly damanged. In either 162 # case, there is not much to be done automatically. Fail with 163 # a message to the user. 164 if [ ! -x /usr/sbin/fsck ]; then 165 cecho "" 166 cecho "WARNING - /usr/sbin/fsck not found. Most likely the" 167 cecho "mount of /usr failed or the /usr filesystem is badly" 168 cecho "damaged." 169 cecho "" 170 return 1 171 fi 172 173 # If a filesystem-specific fsck binary is unavailable, then no 174 # fsck pass is required. 175 [ ! -x /usr/lib/fs/$2/fsck ] && [ ! -x /etc/fs/$2/fsck ] && return 176 177 /usr/sbin/fsck -F $2 -m $1 >/dev/null 2>&1 178 179 if [ $? -ne 0 ]; then 180 # Determine fsck options by file system type 181 case $2 in 182 ufs) foptions="-o p" 183 ;; 184 *) foptions="-y" 185 ;; 186 esac 187 188 cecho "The $3 file system ($1) is being checked." 189 /usr/sbin/fsck -F $2 $foptions $1 190 191 case $? in 192 0|40) # File system OK 193 ;; 194 195 1|34|36|37|39) # couldn't fix the file system - fail 196 checkmessage "$1" "$2" "$3" 197 return 1 198 ;; 199 33) # already mounted 200 return 0 201 ;; 202 203 *) # fsck child process killed (+ error code 35) 204 checkmessage2 "$1" "$2" "$3" "$?" 205 return 1 206 ;; 207 esac 208 fi 209 210 return 0 211} 212 213# 214# checkopt option option-string 215# -> ($option, $otherops) 216# 217# Check to see if a given mount option is present in the comma 218# separated list gotten from vfstab. 219# 220# Returns: 221# ${option} : the option if found the empty string if not found 222# ${otherops} : the option string with the found option deleted 223# 224checkopt() { 225 option= 226 otherops= 227 228 [ "x$2" = x- ] && return 229 230 searchop="$1" 231 set -- `IFS=, ; echo $2` 232 233 while [ $# -gt 0 ]; do 234 if [ "x$1" = "x$searchop" ]; then 235 option="$1" 236 else 237 if [ -z "$otherops" ]; then 238 otherops="$1" 239 else 240 otherops="${otherops},$1" 241 fi 242 fi 243 shift 244 done 245} 246 247# 248# hasopts $opts $allopts 249# 250# Check if all options from the list $opts are present in $allopts. 251# Both $opts and $allopts should be in comma separated format. 252# 253# Return 0 on success, and 1 otherwise. 254# 255hasopts() { 256 opts="$1" 257 allopts="$2" 258 259 set -- `IFS=, ; echo $opts` 260 while [ $# -gt 0 ]; do 261 if [ "$1" != "remount" ]; then 262 checkopt $1 $allopts 263 # 264 # Don't report errors if the filesystem is already 265 # read-write when mounting it as read-only. 266 # 267 [ -z "$option" ] && [ "$1" = "ro" ] && \ 268 checkopt rw $allopts 269 [ -z "$option" ] && return 1 270 fi 271 shift 272 done 273 return 0 274} 275 276# 277# mounted $path $fsopts $fstype 278# 279# Check whether the specified file system of the given type is currently 280# mounted with all required filesystem options by going through /etc/mnttab 281# in our standard input. 282# 283# Return values: 284# 0 Success. 285# 1 The filesystem is not currently mounted, or mounted without required 286# options, or a filesystem of a different type is mounted instead. 287# 288mounted() { 289 path="$1" 290 fsopts="$2" 291 fstype="$3" 292 293 while read mntspec mntpath mnttype mntopts on; do 294 [ "$mntpath" = "$path" ] || continue 295 [ "$fstype" != "-" ] && [ "$mnttype" != "$fstype" ] && return 1 296 [ "$fsopts" = "-" ] && return 0 297 hasopts $fsopts $mntopts && return 0 298 done 299 return 1 300} 301 302# 303# mountfs $opts $path $type $fsopts $special 304# 305# Try to mount a filesystem. If failed, display our standard error 306# message on the console and print more details about what happened 307# to our service log. 308# 309# Arguments: 310# $opts - options for mount(1M) [optional] 311# $path - mount point 312# $type - file system type [optional] 313# $fsopts - file system specific options (-o) [optional] 314# $special - device on which the file system resides [optional] 315# 316# Return codes: 317# 0 - success. 318# otherwise - error code returned by mount(1M). 319# 320mountfs() { 321 opts="$1" 322 path="$2" 323 special="$5" 324 325 # 326 # Take care of optional arguments 327 # 328 [ "$opts" = "-" ] && opts="" 329 [ "$special" = "-" ] && special="" 330 [ "$3" = "-" ] && type="" 331 [ "$3" != "-" ] && type="-F $3" 332 [ "$4" = "-" ] && fsopts="" 333 [ "$4" != "-" ] && fsopts="-o $4" 334 335 cmd="/sbin/mount $opts $type $fsopts $special $path" 336 msg=`$cmd 2>&1` 337 err=$? 338 339 [ $err = 0 ] && return 0 340 341 # 342 # If the specified file system is already mounted with all 343 # required options, and has the same filesystem type 344 # then ignore errors and return success 345 # 346 mounted $path $4 $3 < /etc/mnttab && return 0 347 348 echo "ERROR: $SMF_FMRI failed to mount $path "\ 349 "(see 'svcs -x' for details)" > /dev/msglog 350 echo "ERROR: $cmd failed, err=$err" 351 echo $msg 352 return $err 353} 354