source: gpfs_3.1_ker2.6.20/lpp/mmfs/bin/mmglobfuncs.Linux @ 16

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1#!/bin/ksh
2# IBM_PROLOG_BEGIN_TAG
3# This is an automatically generated prolog.
4
5
6
7# Licensed Materials - Property of IBM
8
9# (C) COPYRIGHT International Business Machines Corp. 2000,2006
10# All Rights Reserved
11
12# US Government Users Restricted Rights - Use, duplication or
13# disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
14
15# IBM_PROLOG_END_TAG
16# @(#)14 1.44.1.1 src/avs/fs/mmfs/ts/admin/mmglobfuncs.Linux.sh, mmfs, avs_rgpfs24, rgpfs24s007a 9/20/06 11:22:24
17#############################################################
18#
19#  This file contains declarations and functions that are
20#  unique to the Linux operating system environment.
21#
22#############################################################
23
24sourceFile="mmglobfuncs.Linux.sh"
25[[ -n $DEBUGmmglobfuncsLinux ]] && set -x
26
27#-----------------------------------------------------------
28# Constants and global variables for internal mm command use.
29#-----------------------------------------------------------
30fsDeviceType='b'
31defaultMajorNumber=239
32minMinorNumber=100
33maxMinorNumber=255
34currentMajorNumber=$defaultMajorNumber
35neededMajorNumber=$defaultMajorNumber
36
37# Find out if this is 2.4 or earlier version.
38[[ $(/bin/uname -r) = 2.[0-4].* ]] && version24=yes || version24=""
39
40
41#-----------------------------------------------------------
42# Return codes and constants for internal mm command use.
43#-----------------------------------------------------------
44MM_Remotefs2=66         # remote file system (EREMOTE)
45MM_UnknownCluster2=101  # unknown cluster (ENETUNREACH)
46MM_ConnAborted=103      # connection aborted (ECONNABORTED)
47MM_ConnectionReset2=104 # connection reset (ECONNRESET)
48MM_TimedOut2=110        # connection timed out (ETIMEDOUT)
49MM_HostDown2=112        # host is down (EHOSTDOWN)
50MM_DaemonDown2=127      # daemon not running (second value)
51
52
53#-----------------------------------------------------------
54# Full path names for Linux system commands
55#-----------------------------------------------------------
56automount=/usr/sbin/automount
57awk=/bin/awk
58cat=/bin/cat
59chmod=/bin/chmod
60chown=/bin/chown
61cp=/bin/cp
62cut=cut          # /bin/cut or /usr/bin/cut depending on the RH release
63date=/bin/date
64dd=/bin/dd
65df=/bin/df
66diff=/usr/bin/diff
67egrep=/bin/egrep
68find=/usr/bin/find
69fgrep=/bin/fgrep
70grep=/bin/grep
71head=/usr/bin/head
72# host=/usr/bin/host
73host="host_aixformat"  # internal function to convert the host output
74hostname=/bin/hostname
75id=/usr/bin/id
76ifconfig=/sbin/ifconfig
77insmod=/sbin/insmod
78join=/usr/bin/join
79kill=/bin/kill
80locale=/usr/bin/locale
81ln=/bin/ln
82ls=/bin/ls
83lsmod=/sbin/lsmod
84lssrc=/usr/bin/lssrc
85mkdir=/bin/mkdir
86mknod=/bin/mknod
87mount=/bin/mount
88mv=/bin/mv
89nm=/usr/bin/nm
90openssl=/usr/bin/openssl
91perl=/usr/bin/perl
92ping=/bin/ping
93ps=/bin/ps
94rcp=/usr/bin/rcp
95rm=/bin/rm
96rmdir=/bin/rmdir
97rmmod=/sbin/rmmod
98rpm=/bin/rpm
99rsh=/usr/bin/rsh
100sed=/bin/sed
101sleep=/bin/sleep
102sort=/bin/sort
103srcmstr=/sbin/srcmstr
104startsrc=/usr/bin/startsrc
105stopsrc=/usr/bin/stopsrc
106sum=/usr/bin/sum
107sync=/bin/sync
108tail=/usr/bin/tail
109tee=/usr/bin/tee
110touch=/bin/touch
111tr=/usr/bin/tr
112umount=/bin/umount
113uname=/bin/uname
114unmount=/bin/umount   # synonym for umount
115wc=/usr/bin/wc
116
117
118#-----------------------------------------------------------
119# Well-known file names
120#-----------------------------------------------------------
121etcFilesystems="/etc/fstab"    # Filesystem stanzas used by the mount command
122etcHosts="/etc/hosts"          # Local host name resolution file
123etcHostConf="/etc/host.conf"   # Resolver configuration file
124auto_master="/etc/auto_master" # master input for the automount daemon
125autoMaster="/etc/auto.master"  # master input for the automount daemon
126
127
128#-------------------------------
129# Commands with common options
130#-------------------------------
131
132# Command to extract a specific field from a line.
133#   Example: print -- $line | $GETVALUE $NODE_NAME_Field
134GETVALUE="$cut -d: -f "
135
136# Command to sort the mmsdrfs file prior to storing it.
137#   Example: LC_ALL=C $SORT_MMSDRFS $sdrfs -o $sdrfs
138# The sorting is based on the following keys:
139# - the primary key is the nodeset id
140# - the secondary key is the stripe group id
141# - the next key is the line type
142# - the last key is the line number
143# The sorting is based on the ASCII collating sequence,
144# except for the fourth field, which is sorted in
145# arithmetic order.
146SORT_MMSDRFS="$sort -t: -k 1,1 -k 3,3 -k 2,2 -k 4,4n "
147
148
149#-------------------------------
150# Frequently used functions
151#-------------------------------
152
153
154####################################################################
155#
156# Function:  In the Linux environment, function host_aixformat
157#            looks up a name using both /etc/hosts and the Linux
158#            host command.  This function determines the order
159#            in which the name is resolved.
160#
161# Input:     None.
162#
163# Output:    "hosts" - check first the /etc/hosts file.
164#            "bind"  - start with the host command.
165#
166# Returns:   Always zero.
167#
168####################################################################
169function setHostResolveOrder
170{
171  typeset sourceFile="mmglobfuncs.Linux.sh"
172  [[ -n $DEBUG || -n $DEBUGsetHostResolveOrder ]] && set -x
173  $mmTRACE_ENTER "$*"
174  typeset order
175
176  # Find out the host lookup order.  Our rules are:
177  # If 'hosts' is specified first on the order line in /etc/host.conf,
178  # search for the name in /etc/hosts before issuing the host command.
179  # Otherwise, start with the host command.
180  if [[ -f $etcHostConf ]]
181  then
182    order=$($awk '                                        \
183      BEGIN { order = "bind" }                            \
184      $1 == "order" && $2 ~ /^hosts/ { order = "hosts" }  \
185      END { print order }                                 \
186    ' $etcHostConf 2>/dev/null)
187  else
188    order=bind
189  fi
190
191  print $order
192  return 0
193
194}  #-------------- end of function setHostResolveOrder ------------------
195
196
197####################################################################
198#
199# Function:  Issues the Linux host command and converts the output
200#            to make it look as if it came from an AIX host command.
201#            If the host command does not resolve the name, try
202#            looking up the name in the local /etc/hosts file.
203#
204# Input:     $1 - hostname or IP address
205#
206# Output:    A line similar to the following:
207#               esj.austin.ibm.com is 9.53.145.122
208#
209# Returns:   0 - hostname resolved
210#            non-zero - name not resolved
211#
212####################################################################
213function host_aixformat  # <hostname|ipa>
214{
215  typeset sourceFile="mmglobfuncs.Linux.sh"
216  [[ -n $DEBUG || -n $DEBUGhost_aixformat ]] && set -x
217  $mmTRACE_ENTER "$*"
218  typeset inValue=$1
219
220  typeset nameResolved=no
221  typeset etcHostsChecked=no
222  typeset hostOutput=${tmpDir}hostOutput.${mmcmd}.$$
223  typeset hostErrMsg=${tmpDir}hostErrMsg.${mmcmd}.$$
224  typeset rc awkRc hostResult
225
226  [[ -z $inValue ]] && return 1
227
228  # If still not known, determine the lookup order.
229  [[ -z $resolveOrder ]] && \
230    resolveOrder=$(setHostResolveOrder)
231
232  # If it is OK to do so, see if the host name appears in /etc/hosts.
233  if [[ $resolveOrder = hosts && -f $etcHosts ]]
234  then
235    $awk '                                           \
236       BEGIN { entriesFound = 0 }                    \
237       # Skip comment, empty and short lines.        \
238       $1 ~ /^#/ || NF <= 1  { next }                \
239       # Compare the inValue to each of the fields.  \
240       { for ( i = 1;  i <= NF; i++ ) {              \
241           if ( $i == "'$inValue'" ) {               \
242             { print $2 " is " $1 }                  \
243             { entriesFound += 1 }                   \
244             { next }                                \
245           }                                         \
246           # Ignore in-line comments.                \
247           if ( $i ~ /^#/ ) {                        \
248             { break }                               \
249           }                                         \
250         }                                           \
251         { next }                                    \
252       }                                             \
253       END {                                         \
254         if ( entriesFound == 1 ) { exit 0 }         \
255         if ( entriesFound == 0 ) { exit 1 }         \
256         { exit 2 }                                  \
257       }                                             \
258    ' $etcHosts
259    awkRc=$?
260
261    if [[ $awkRc -eq 0 ]]
262    then
263      # Name successfully resolved using /etc/hosts.
264      nameResolved=yes
265      rc=0
266    elif [[ $awkRc -eq 2 ]]
267    then
268      # There is more than one matching entry in /etc/hosts.
269      # Give up - multiple names are not allowed.
270      printErrorMsg 498 $mmcmd "$inValue ($etcHosts)"
271      return 1
272    else
273      # Name not found in /etc/hosts but keep going.
274      etcHostsChecked=yes
275      rc=1
276    fi  # end of if [[ $awkRc -eq 0 ]]
277  fi  # end of if [[ $resolveOrder = hosts ]]
278
279
280  # If the name is not resolved yet (because it is not in /etc/hosts
281  # or because we have to start with the host command), try to resolve
282  # the name using the Linux host command.
283  if [[ $nameResolved = no ]]
284  then
285    # The output of the host command, and as a result the way we parse it,
286    # depends on whether the input parameter is a hostname or an IP address.
287    if [[ $inValue = +([0-9]).+([0-9]).+([0-9]).+([0-9])?(.) ]]
288    then
289      # We start with an IP address.  The host command output looks like this:
290      #   122.145.53.9.IN-ADDR.ARPA domain name pointer esj.austin.ibm.com
291      hostResult=$(LC_ALL=C /usr/bin/host -t a $inValue 2>$hostErrMsg)
292      rc=$?
293      if [[ $rc -eq 0 ]]
294      then
295        set -f ; set -- $hostResult ; set +f
296        if [[ -z $5 || -n $6 || $3 = not && $4 = found* ]]
297        then
298          # Something is wrong.  Collect error information to be later
299          # displayed to the user if the name cannot be resolved.
300          # Note: Linux sends the 'not found' message to stdout and returns 0.
301          #       This forces us to do the funny test for $3 and $4 above.
302
303          # Unexpected output from the host command.
304          printErrorMsg 499 $mmcmd $inValue 2> $hostErrMsg
305          /usr/bin/host -t a $inValue >>$hostErrMsg 2>&1
306          rc=1
307        else
308          # Things seem to have worked.
309          print -- "${5%.} is $inValue"
310          nameResolved=yes
311        fi
312      fi
313
314    else
315      # We start with a hostname.  The host command output looks like this:
316      #   esj.austin.ibm.com has address 9.53.145.122
317      # It is possible to have nickname line and more than one address line.
318      LC_ALL=C /usr/bin/host -t a $inValue >$hostOutput 2>$hostErrMsg
319      rc=$?
320      if [[ $rc -eq 0 ]]
321      then
322        # Strip any nickname lines and eliminate duplicates
323        hostResult=$($cat $hostOutput | $grep ' has address ' | $sort -u)
324        set -f ; set -- $hostResult ; set +f
325        if [[ -z $4 || -n $5 || $3 = not && $4 = found* ]]
326        then
327          # Something is wrong.  Collect error information to be later
328          # displayed to the user if the name cannot be resolved.
329          # Note: Linux sends the 'not found' message to stdout and returns 0.
330          #       This forces us to do the funny test for $3 and $4 above.
331
332          # Unexpected output from the host command.
333          printErrorMsg 499 $mmcmd $inValue 2> $hostErrMsg
334          /usr/bin/host -t a $inValue >>$hostErrMsg 2>&1
335
336          # Cannot handle multiple interfaces for host $inValue
337          [[ -n $5 ]] && printErrorMsg 498 $mmcmd "$inValue"
338          rc=1
339        else
340          # Things seem to have worked.
341          print -- "${1%.} is $4"
342          nameResolved=yes
343        fi
344      fi
345    fi  # end of if [[ $inValue = +([0-9]).+([0-9]).+([0-9]).+([0-9]) ]]
346  fi  # end of if [[ $nameResolved = no ]]
347
348
349  # If the name is still not resolved, and we haven't tried it yet,
350  # try resolving the name by looking up /etc/hosts.
351  if [[ $nameResolved = no ]]
352  then
353    if [[ $etcHostsChecked = no ]]
354    then
355      $awk '                                           \
356         BEGIN { entriesFound = 0 }                    \
357         # Skip comment, empty and short lines.        \
358         $1 ~ /^#/ || NF <= 1  { next }                \
359         # Compare the inValue to each of the fields.  \
360         { for ( i = 1;  i <= NF; i++ ) {              \
361             if ( $i == "'$inValue'" ) {               \
362               { print $2 " is " $1 }                  \
363               { entriesFound += 1 }                   \
364               { next }                                \
365             }                                         \
366             # Ignore in-line comments.                \
367             if ( $i ~ /^#/ ) {                        \
368               { break }                               \
369             }                                         \
370           }                                           \
371           { next }                                    \
372         }                                             \
373         END {                                         \
374           if ( entriesFound == 1 ) { exit 0 }         \
375           if ( entriesFound == 0 ) { exit 1 }         \
376           { exit 2 }                                  \
377         }                                             \
378      ' $etcHosts
379      awkRc=$?
380    fi  # end of if [[ $etcHostsChecked = no ]]
381
382    if [[ $awkRc -eq 0 ]]
383    then
384      # Name successfully resolved using /etc/hosts.
385      rc=0
386    elif [[ $awkRc -eq 2 ]]
387    then
388      # There is more than one matching entry in /etc/hosts.
389      printErrorMsg 498 $mmcmd "$inValue ($etcHosts)"
390    elif [[ -s $hostErrMsg ]]
391    then
392      # Name not found in /etc/hosts. Show the error information
393      # from the Linux host command above.
394      $cat $hostErrMsg 1>&2
395    else
396      # Name not found in /etc/hosts and there is no other error information.
397      printErrorMsg 500 $mmcmd $inValue
398    fi  # end of if [[ $awkRc -eq 0 ]]
399  fi  # end of if [[ $nameResolved = no ]]
400
401  $rm -f $hostOutput $hostErrMsg
402  return $rc
403
404}  #-------------- end of function host_aixformat ------------------
405
406
407##################################################################
408#
409# Function:  Remap ts return codes to OS-independent values.
410#
411# Input:     $1 - the return code to be mapped.
412#
413# Output:    the remapped input return code
414#
415# Returns:   always zero
416#
417# Example:
418#   tstatus -m fsname
419#   rc=$(remapRC $?)
420#
421##################################################################
422function remapRC  # <returnCode>
423{
424  typeset sourceFile="mmglobfuncs.Linux.sh"
425  [[ -n $DEBUG || -n $DEBUGremapRC ]] && set -x
426  $mmTRACE_ENTER "$*"
427  typeset rcIn=$1
428  typeset rcOut
429
430  case $rcIn in
431
432    $MM_DaemonDown2      )  rcOut=$MM_DaemonDown ;;
433    $MM_HostDown2        )  rcOut=$MM_HostDown ;;
434    $MM_TimedOut2        )  rcOut=$MM_TimedOut ;;
435    $MM_Remotefs2        )  rcOut=$MM_Remotefs ;;
436    $MM_UnknownCluster2  )  rcOut=$MM_UnknownCluster ;;
437    $MM_ConnectionReset2 )  rcOut=$MM_ConnectionReset ;;
438    $MM_ConnAborted      )  rcOut=$MM_DaemonDown ;;
439
440    *                    )  rcOut=$rcIn ;;
441
442  esac  # end of case $rcIn in
443
444  # Return the new value.
445  print -- "$rcOut"
446  return 0
447
448}  #------- end of function remapRC --------------------
449
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