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e|}qP^O\ x#hWNh#-obj+cp4.obj+- G vmi$kwd:zgp.ob L $ SQUASH014.A ! +[ACORNSQUASH.CODE.A]SQUASH-KIT-FILES.DAT;19 ; @ $:, BMAP.OBJ_A2,,,,,, A, OBJ$:, MOVCH.OBJ_A2,,,,,, A, OBJ$:, CP2.OBJ_A2,,,,,, A, OBJ$:, ACNSQSDV.OBJ_A2,,,,,, A, OBJ$:, CP6.OBJ_A2,,,,,, A, OBJ$:, CP5.OBJ_A2,,,,,, A, OBJ$:, CP8.OBJ_A2,,,,,, A, OBJ$:, CP7.OBJ_A2,,,,,, A, OBJ$:, CP1.OBJ_A2,,,,,, A, OBJ$:, CP3.OBJ_A2,,,,,, A, OBJ$:, CP4.OBJ_A2,,,,,, A, OBJ$:, ZGP.OBJ_A2,,,,,, A, OBJ$:, ACLIC.OBJ_A2,,,,,, A, OBJ$:, GETEFB.OBJ_A2,,,,,, A, OBJ$:, APKCALL.OBJ_A2,,,,,,! A, OBJ$:, ACNSQUV_RO.OBJ_A2,,,,,, " A, OBJ$:, ACNSQSDV_RO.OBJ_A2,,,,,, A, OBJ$:, ACLIC_RO.OBJ_A2,,,,,, " A, OBJ$:, SQU-CHECKDEBUG.OBJ,,,,,,$ A, OBJ$:, SQU-CHECKDEBUG.OBJ_A,,,,,,% A, OBJ$:, SQU-CHECKDEBUG.OBJ_A2,,,,,, A, OBJ$:, ACNSQUVB.OBJ,,,,,, A, OBJ$:, ACNSQB.OBJ,,,,,, A, OBJ$:, BMAPB.OBJ,,,,,, A, OBJ$:, ACNSQUVB_RO.OBJ,,,,,, A, OBJ$:, ACNSQB_RO.OBJ,,,,,, A, OBJ$:, ACNSQUVB.OBJ_A,,,,,, A, OBJ$:, ACNSQB.OBJ_A,,,,,, A, OBJ$:, BMAPB.OBJ_A,,,,,, ! A, OBJ$:, ACNSQUVB_RO.OBJ_A,,,,,, A, OBJ$:, ACNSQB_RO.OBJ_A,,,,,, A, OBJ$:, ACNSQUVB.OBJ_A2,,,,,, A, OBJ$:, ACNSQB.OBJ_A2,,,,,, A, OBJ$:, BMAPB.OBJ_A2,,,,,," A, OBJ$:, ACNSQUVB_RO.OBJ_A2,,,,,, A, OBJ$:, ACNSQB_RO.OBJ_A2,,,,,, ) * [ACORNSQUASH.CODE.A]SQUASH-SHUTDOWN.COM;1 + , V@ . / 4 I - ! 0 1 2 3 K P W O 5 6 y[ 7 ˟\ 8 "Tq 9 G H J : $ VERIFY = F$VERIFY(1*(F$TRNLNM("SQUASH_DEBUG") .NES. "")) $ GOTO START $ ! Copyright (c) 1994 By $ ! Acorn Software $ ! All rights reserved. $ ! I $ ! This software is furnished under a license and may be used and copied @ $ ! only in accordance of the terms of such license and with theH $ ! inclusion of the above copyright notice. This software or any otherI $ ! copies thereof may not be provided or otherwise made available to any F $ ! other person. No title to and ownership of the software is hereby $ ! transferred. $ ! G $ ! The information in the software is subject to change without notice A $ ! and should not be construed as a comitment by Acorn Software, $ ! Incorporated. $ ! ; $ ! Acorn Software assumes no responsibility for the use or E $ ! reliability of its software on equipment which is not supplied by $ ! Acorn Software. $ !
$ ! Facility: $ ! $ ! Squash $ !
$ ! Abstract: $ ! E $ ! Invoked at system shutdown time and looks for files of the form: $ ! ! $ ! SYS$MANAGER:SQUASH_*.SHUTDOWN $ ! 3 $ ! and executes every one of those that it finds. $ ! $ ! Environment: $ ! $ ! Requires all privilege. $ ! $ ! Authors: $ ! $ ! Dick Munroe $ ! $ ! Creation Date: $ ! $ ! 22-Mar-94 $ ! $START: $ $ lastProcessedFileName = "" $10$: 3 $ xxx = f$search("sys$manager:squash_*.shutdown",1) D $ if (xxx .eqs. "") .or. (xxx .eqs. lastProcessedFileName) then exit $ lastProcessedFileName = xxx
$ set noon $ @'xxx' $ set on
$ goto 10$ ( * [ACORNSQUASH.CODE.A]SQUASH-STARTUP.COM;2 + , +@ . / 4 I - ! 0 1 2 3 K P W O 5 6 . 7 @?˟\ 8 @iq 9 G H J : $ VERIFY = F$VERIFY(1*(F$TRNLNM("SQUASH_DEBUG") .NES. "")) $ GOTO START $ ! Copyright (c) 1994 By $ ! Acorn Software $ ! All rights reserved. $ ! I $ ! This software is furnished under a license and may be used and copied @ $ ! only in accordance of the terms of such license and with theH $ ! inclusion of the above copyright notice. This software or any otherI $ ! copies thereof may not be provided or otherwise made available to any F $ ! other person. No title to and ownership of the software is hereby $ ! transferred. $ ! G $ ! The information in the software is subject to change without notice A $ ! and should not be construed as a comitment by Acorn Software, $ ! Incorporated. $ ! ; $ ! Acorn Software assumes no responsibility for the use or E $ ! reliability of its software on equipment which is not supplied by $ ! Acorn Software. $ !
$ ! Facility: $ ! $ ! Squash $ !
$ ! Abstract: $ ! D $ ! Invoked at system startup time and looks for files of the form: $ ! $ ! SYS$MANAGER:SQUASH_*.STARTUP $ ! 3 $ ! and executes every one of those that it finds. $ ! $ ! Environment: $ ! $ ! Requires all privilege. $ ! $ ! Authors: $ ! $ ! Dick Munroe $ ! $ ! Creation Date: $ ! $ ! 22-Mar-94 $ ! $START:
$ set noon $ sysman:==$sysman $ if f$getsyi("CPU") .ge. 128 $ then% $ if .not. f$getdvi("FRA0:","EXISTS") $ then( $ sysman io load sys$system:frdriver.exe $ endif $ endif $ $ lastProcessedFileName = "" $10$: 2 $ xxx = f$search("sys$manager:squash_*.startup",1)D $ if (xxx .eqs. "") .or. (xxx .eqs. lastProcessedFileName) then exit $ lastProcessedFileName = xxx
$ set noon $ @'xxx' $ set on
$ goto 10$ ! * [ACORNSQUASH.CODE.A]SQUASH.CLD;17 + , ]&j . / 4 P - ! 0 1 2 3 K P W O 5 6 LS 7 "˟\ 8 bq 9 G H J
DEFINE SYNTAX SRCONT IMAGE squashmon DEFINE SYNTAX SQUASHFLUSH IMAGE SQUASH_FLUSH J Parameter p1,prompt="FRn:",value(required,type=$rest_of_line),label=UNIT DEFINE SYNTAX SQUASHREPORT# qualifier CONTINUOUS,syntax=srcont image squashrptP Parameter p1,prompt="FRAn:",value(default=fra0:,type=$rest_of_line),label=UNIT Define syntax squash_ro Image squash_ro qualifier BIG & ! BIG qualifier does nothing any more.I Parameter p1,prompt="FRn:",value(default=nla0:,type=$device),label=UNIT I parameter p2,label=FNAM,prompt="file",value(default=nla0:,type=$infile) + ! Qualifier KEY,value(type=$quoted_string) % Qualifier FENCE,value(type=$number) $ qualifier SIZE,value(type=$number)% qualifier CACHE,value(type=$number) $ qualifier MODE,value(type=$number)" ! mode is a bitmask. Bit meanings: ! 1 - no autoflush at all 1 ! 2 - no flush right away if it was write-logical B ! 4 - instant flush catch-up stuff (based on no mbx in, not timer)( ! 8 - no lazy-catchup that's timer-basedA !64 - allow "compress buffer at once if last blk written" mode in ! normal mode. F ! default 0 selects log-io instant catchup, lazy catchup after 0.6 sec ! no-work status qualifier WEAK qualifier SMALL qualifier CLEAR qualifier INIT qualifier NOCOMPRESS qualifier UNSAFE qualifier WRITEBACK qualifier VERSION 1 qualifier DEBUG, nonnegatable, placement=global Define verb SQUASH
Image squash , ! qualifier AUTHORIZE,syntax=squash_installI Parameter p1,prompt="FRn:",value(default=nla0:,type=$device),label=UNIT I parameter p2,label=FNAM,prompt="file",value(default=nla0:,type=$infile) + ! Qualifier KEY,value(type=$quoted_string) % Qualifier FENCE,value(type=$number) $ qualifier SIZE,value(type=$number)% qualifier CACHE,value(type=$number) qualifier BIG ! ! BIG qualifier now does nothing. $ qualifier MODE,value(type=$number)" ! mode is a bitmask. Bit meanings: ! 1 - no autoflush at all 1 ! 2 - no flush right away if it was write-logical B ! 4 - instant flush catch-up stuff (based on no mbx in, not timer)( ! 8 - no lazy-catchup that's timer-basedA !64 - allow "compress buffer at once if last blk written" mode in ! normal mode. F ! default 0 selects log-io instant catchup, lazy catchup after 0.6 sec ! no-work status qualifier WEAK qualifier SMALL qualifier CLEAR qualifier INIT qualifier NOCOMPRESS qualifier UNSAFE qualifier WRITEBACK qualifier VERSION % qualifier NOWRITE, syntax=SQUASH_RO % qualifier FLUSH, syntax=SQUASHFLUSH ' qualifier q" $ SQUASH014.A ]&j ! ![ACORNSQUASH.CODE.A]SQUASH.CLD;17_A;6 P REPORT, syntax=SQUASHREPORT 7 qualifier INSTALL,value(required,type=$quoted_string) ; qualifier LICENSE,value(default="SYS$OUTPUT:",type=$file) 1 qualifier DEBUG, nonnegatable, placement=global G ! WRITEBACK is a synonym of UNSAFE. Both mean the data isn't guaranteed 9 ! to be recorded to disk till dismount or a flush occurs. H ! The "SQUASH/CLEAR FRAn:" command is used only where somehow a compressC ! daemon has been aborted while active. Its purpose and function is G ! to terminate (with error) an I/O packet that may have been in process A ! when the daemon was aborted. It is however a somewhat dangerous D ! command; sometimes systems crash after it is used due to corruptedI ! buffers. Therefore it's a last resort and not documented anywhere else. 4 ! Under normal circumstances it is not needed, ever. ! < ! The SQUASH/NOWRITE/switches FRAn: disk:[dir]container.fileG ! command invokes the read-only SQUASH daemon, which may be distributed B ! along with frdriver freely. Without the /NOWRITE switch, you use@ ! the full SQUASH image, which is licensed software and requires ! license from Acorn. ! E ! /BIG qualifier left in, in case anyone sees docs that say it can be ) ! used. Won't hurt now, but does nothing. ! * [ACORNSQUASH.CODE.A]SQUASH.DOC;11 + , . f / 4 M f f - ! 0 1 2 3 K P W O g 5 6 (9GS 7 @˟\ 8 @Sq 9 G H J Acorn Squash (tm) @ The Acorn Squash package is a virtual disk designed to allow you0 to compress data automatically and in real time.
Introduction: C The SQUASH package contains a compressing disk system which appears ? to VMS exactly like a normal, locally connected disk, but which D compresses all data stored on it and automatically decompresses dataC read from it. The actual storage takes place in a pair of container E files on normal VMS disks, but the resulting volume will appear to be D larger than the amount of space used for it. Container files createdC grow slowly as more space is used, so that a newly populated SQUASH D disk's container files will be fairly full of data. If a SQUASH diskA has not needed space for its contents, it won't have allocated it B yet (approximately; it allocates 2048 blocks at a time). The space@ penalty for declaring a SQUASH disk's size larger than needed isA tiny, one block per 4096 blocks of size declared. Thus you seldom @ or never need to "tune" SQUASH disk sizes to avoid wasted space. Getting Started: @ You install SQUASH with the customary VMSINSTAL script. Load theB SQUASH distribution medium and, from the system account, enter the command 6 $ @SYS$UPDATE:VMSINSTAL SQUASH011 distribution-medium: A This will install SQUASH on your system disk. On a VAX, under 350 A blocks are needed for the eventual distribution kit, though about B 3000 blocks should be free to install the kit. On Alpha, the spaceC needed is closer to 2000 blocks. Version 1.1 of Squash will work on A VAX VMS 5.5 and up and AXP VMS 1.5. (An AXP VMS 6.1 version is in test.) 9 To complete the installation of Acorn SQUASH you must run = SYS$MANAGER:SQUASH_CONFIGURATION.COM for each SQUASH disk you want available on your system. B Then you must also modify the file SYS$MANAGER:SYSTARTUP_V5.COM to contain: ' $ @SYS$STARTUP:SQUASH-STARTUP.COM ? (If running VMS V6.X, you modify SYS$MANAGER:SYSTARTUP-VMS.COM) @ and you must add a line to SYS$MANAGER:SYSHUTDWN.COM that reads: ( $ @SYS$MANAGER:SQUASH-SHUTDOWN.COM E Remember that Squash keeps files open on its containing disks, so the B call of SQUASH-SHUTDOWN.COM should be before any of the containingC disks are dismounted. (Physically, Squash disks storage is on files E on "real" disks somewhere. These are the containing disks, as opposed = to the Squash disks which are the compressing virtual disks.) Running SQUASH_CONFIGURATION: C The SQUASH_CONFIGURATION script will ask a number of questions in a B menu for each SQUASH device. You can set up up to 128 SQUASH disks? per system (more, if you patch the driver name from FRdriver to B FRBDRIVER, FRCDRIVER, etc.) each of which has from 1000 to about 2 million blocks. E First you specify the FR unit number to use. The configuration script > will then ensure that device unit is loaded. (Note: On AXP, FRE devices must be loaded from FRA0: to FRAn: contiguously. That is, you @ can load FRA0:, FRA1:, FRA2:, etc. but not FRA2:, FRA0:, FRA1:.) D Then you specify where the container files are. This must be a local> device but can be anywhere on your system. Once the device andC directory are selected, the script can advise you how much space is 2 on the device and allow you to configure the disk. < The menu looks like this once you pick an FR unit number and container file area: 6 Acorn SQUASH (tm) 16:10:054 SQUASH Configuration selection for _ARISIA$FRA2:+ Container file DC5:[JNK]SQUASH_FRA2.DSK 9 Recommended maximum volume size is 60076 blocks (est) A These would occupy all 37548 free disk blocks on host device. H Number of files needed to fill 60076 blocks with 50 block files:1231$ Space reserved for index file: 0D Currently selected cache size: 8 virtual tracks (32 blocks each) --> Select size of diskC Select number of files on disk for index file reserved space 7 Use higher compression mode (Uses more CPU time) 6 * Use lower compression mode (Uses less CPU time)G Use faster write mode (Data written on flush/dismount. See docs) # Mount this disk at boot time - Select Squash cache size for this disk + Show currently assigned SQUASH disks / Change execution node (currently ARISIA) . Exit this menu and set up configuration+ Quit the configurator, doing nothing 6 Setting some of these parameters requires some advice. Setting Parameters I When you configure SQUASH, there are a number of parameters that control I its use which can be set. Two of these that are more puzzling than others D are the reserved area and the SQUASH cache size. Also, sizing SQUASH disks can be an issue sometimes. The Reserved Area E The reserved area on a SQUASH disk is the first N blocks of the disk, E where N is the reserved space. It is allocated at startup and used as A uncompressed disk storage. (Therefore a SQUASH disk which has the I reserved area the same as the size is just a virtual disk on a file, with F no compression, but the file need not be contiguous.) SQUASH disks areF initialized normally with the index file at the beginning of the disk,H the idea being that the index file, which is used for many forms of fileE access, should not need to be decompressed before it can be accessed. G (Note that accesses are serialized, so this doesn't mean one can get to I the index file data at once, but it means that the index file access does F not have to wait for decompress time, nor does writing invoke the safe. buffer writing overhead that normal data has.)I Basically the index file has one block per file on the disk. Thus this E area is sized by asking how many files are likely to be wanted on the I disk. (If this number is not enough, it just means some of the index file F will be extended into compressed storage, but it will still be usable.G It is perfectly OK to have NO space reserved in this way; index file ; blocks compress rather well and this saves the most space. D You would normally estimate index file space needed by giving theF number of files you expect to use on the volume. The configurator willB add 2% to this to roughly account for index file bitmap and so on. SQUASH disk sizing H SQUASH disks can't be resized once set up because VMS writes informationE on the disk that contains size information. However, if you specify a F SQUASH disk as larger than you think it should be, this costs only oneI disk block per 4096 blocks of capacity. Real disk usage will grow only as H data is actually placed on the disk holding the container Q $ SQUASH014.A ! ![ACORNSQUASH.CODE.A]SQUASH.DOC;11_A;6 M f " files, so thatD if you believe you need 50,000 blocks of space, then if you set up aC SQUASH disk of 100,000 blocks instead, it will be larger by only 13 I blocks. This is likely to be negligible for such a volume size. Therefore D it is good practice to specify SQUASH disks somewhat larger than youI expect to need. If the physical disk runs out of room, SQUASH will return "devicefull" errors. The SQUASH cache I SQUASH has a cache that can vary from 2 to 256 23-block "virtual tracks". H This cache is accessed as part of the working set of the Squash daemons,J so if memory or page file space is tight in your system, you will probablyG want to keep the cache small. Also, the cache is useful for speeding up G reads, and is somewhat useful for writes only in /WRITEBACK mode, which I should be used with care. Therefore, a disk which will be read a lot will F often benefit from a larger cache. This will help where there are manyH readers accessing the disk or where data will be accessed repeatedly. IfF this is so, select as large a cache as you can afford. If not, a smallH cache will probably suffice. Remember too that directories are files andD it is likely to be helpful to have a cache sector for each directoryG you will be accessing, possibly another sector if the index file is not C in a preaccessed area, and that this is needed for each user who is C simultaneously accessing the disk. Remember that you can change the G SQUASH cache size by editing the SYS$MANAGER:SQUASHdiskname.DAEMON file D and changing the /cache:nn switch to the value you like, rememberingG that nn may be 2 to 256. The new cache takes effect next time you start F the SQUASH daemon. The on-disk storage is not affected at all by this. Compression Mode: K SQUASH has two compression methods. One is very fast (and should be used on I any slow processors) and compresses moderately well. The other compresses C better, but is much more costly in CPU time. (You can also edit the J SQUASH .daemon file to specify no compression for a session where you willC be placing compressed and/or encrypted data on a Squash disk.) Data K compressed by either method, or both, can be on a Squash disk, but you must select which you want. Faster vs. Slower Write Mode C SQUASH normally goes to great pains to keep your data safe against I system crashes or power failures, using a write-through cache strategy so H that I/O doesn't finish till data is safe on disk. If you use the fasterI write method, Squash uses a write-back strategy, which means your data is F NOT safe on disk until you do a SQUASH/FLUSH operation on the disk, orF until you dismount the disk (which does a flush for you). When you areE initially populating a Squash disk, this can save time. If you choose K this option, however, you must be aware that data is NOT safe until a flush G or dismount is done. Note too that if you reserve index file space, any B data in this space is written immediately even in fast write mode.D Therefore if your index file is all in this area, it will be writtenJ directly even in this mode. User data in general will not. It gets writtenI as buffers need to be reused, or at flush when all buffers are written to : disk. (For clarity: user data means anything on the disk.) Mounting Disk At Boot Time ; It is strongly recommended this be done. If this option is D selected, the SQUASH disk can be initialized by the script correctly? for optimal space usage. The Squash startup scripts that run at F boot time assume this is done. Therefore if you don't select the mountE at boot time option, you should initialize the disk immediately after A setting it up and then edit the startup scripts in your system tonG mount it correctly. It's actually much easier to let the script do thisc all for you. Details: F Acorn Squash disks will appear to VMS as locally attached disks on theG system running the package. They can be used as hosts for other virtualaK disks, stripesets, shadowsets, volume sets, or the like if this is desired.s@ However, in order to use them, the driver and compressing daemon must be installed. G The disks appear to VMS exactly, not just almost, like a physical disk.tE Unlike some compression systems, Squash disks can be mounted /FOREIGNU? and accessed for image or physical save or restore, are mountedl@ and accesed with normal VMS MOUNT, COPY, BACKUP, etc. images. NoB special utilities are needed or need be relied upon. They can alsoH be MSCP served in the usual way. Unlike other compressing disk packages,A SQUASH disks do not appear to VMS to have a nonstandard ACP (filecI system processor). Accordingly they function with ALL VMS file structurescF and will continue to work in the future, even though there are plannedC changes in the VMS file system. The underlying files are absolutelyn? identical between VAX and Alpha (AXP) platforms, so that SquashXD containers can be accessed on either system, and without introducingG extra intra-cluster traffic or possible future subtle incompatibilitiessF with the VMS filesystems. Squash disks can also be accessed as foreignE devices for back/image or backup/physical restores. Other compressing G disk packages cannot do this, for they are not true VMS pseudo devices.$ D Squash compresses its virtual disks in "virtual tracks" of 32 blocks> each. If an entire virtual track is contained in a file, it isA possible to say how much that part of the file was compressed. IfTD however VMS allocates parts of two or more files in a virtual track,E since they are compressed together, it is not possible to say cleanlyeD how much each of the component files has been compressed. A packageB that can give this information must compress each file separately,@ which will give poor performance with small files. Squash is notA subject to such a problem. Because SQUASH allocates disk startinglE with about 2500 blocks and allocating additional space 2048 blocks atSE a time, the exact compression being achieved per file is difficult toA@ compute most of the time. You will note that as the disks becomeB large, these effects become comparatively small, but on disks of aD few thousand blocks, the container files may not seem small compared? to their contents due to the unused space Squash has yet to usea therein. F You will find that Squash will compress better where similar files areC copied to a Squash disk together. For example, if you have a set oflI C programs and object files in a directory, less storage will be taken inuC general if you copy *.c,*.h to the Squash disk, and then copy *.obj:? and possibly *.exe there. This is because entire virtual trackseI then be filled with C code or object code, and the compression algorithms 5 will perform better than they will for mixed sectors.s A Squash does NOT interfere with the way VMS allocates space on itseA disks, does nothing nonstandard above driver level. Therefore thea@ VMS file system (any VMS file system, now or in the future) will work on it.: @ Certain actions need to be done at each boot in order to use the2 package. These can be preset by using the suppliedD SQUASH_CONFIGURATION.COM script in SYS$MANAGER but will be describedC here separately. It is strongly recommended that you use the scriptdA for setups to avoid subtle problems, and to enable you to inspectf. which SQUASH disks are configured at any time. Manual SQUASH Setup Requirements ------ ------ ----- ------------ B To manually set up a Squash disk, it is first necessary that an FR? unit be CONNECTED for each compressing disk that is to be used.U G The supplied FRDRIVER is used for this. It is built by the installationeC script, but commands such as the following are needed at boot time:a $ sysgen :== $sysgen0 $ sysgen connect FRA0:/noadapter/driver=frdriver0 $ sysgen connect FRA1:/noadapter/driver=frdriver E Up to 128 units may be connected. Note that each unit will allocate au@ 16KB buffer from pool when I/O actually begins to it. If a large> number of units is to be used, it may be desirable to increaseF the SYSGEN parameter NPAGEDYN to accommodate this. (There is a versionE of the driver which keeps the buffers only while they are in use, butnB this tends to lead to pool fragmentation and is not useful in most situations.) B Then for each compressing disk desired, a detached process for theA compression daemon for that disk must be started. This is done byr: running these processes after the driver is connected. TheC SYS$MANAGER:SQUASH_CONFIGURATION.COM procedure sets up SQUASH disks 9 for you. It creates files named SQUASH.STARTUP,d= SQUASH.DAEMON, and SQUASH.SHUTDOWN in thec> $ SQUASH014.A ! ![ACORNSQUASH.CODE.A]SQUASH.DOC;11_A;6 M f f " SYS$MANAGER: area, which start or shut down SQUASH disks. (TheE "" above is just the full device name. Thus, on node ARISIAeE the file names could be SQUASH_ARISIA$FRA3.STARTUP and so on, if thise is a standalone system.) B The SQUASH.DAEMON file contains the input which actuallyD runs the SQUASH compression daemon. If you wish to use the read-only7 Squash daemon, the SQUASH command can be edited to readi" SQUASH/NOWRITE to accomplish this. I Once the FR disks show up in SHOW DEVICE as "online", they can be used. G If the files are being created for the first time, this can take half aoF minute or so (depending on CPU and host disk speeds). If the files areB already created, the delay is a few seconds at most, as it is onlyD necessary to read the bitmap at startup. If you specify when runningE SQUASHCONFIG_SETUP that you want the disks mounted at startup, a loopsD will await the device ready condition and mount the SQUASH disk whenC it is ready (timing out eventually if this fails to happen within ax minute or so). B The commands given to start the daemon are internally of the form: G $Squash/fence:nnnnn/size:mmmmmm/otherswitches FRA0: disk:[dir]file.typet E which creates a virtual disk of size mmmmmm blocks (up to two millionc blocks is legal) using files disk:[dir]file.type andd disk:[dir]file.type_idxk @ The last of these is a file holding the index pointers to actualC storage. The allocation bitmap and the data are in the first file. nB Note that for block numbers below the fence value ("nnn" in theC example), the data is kept uncompressed on the container file. This0@ is designed to allow one to init the disk /index=beg/headers=nnnB and set the fence to nnn+small number, so basically the index file) is not compressed, but directly accessed.tC The fence value can be anything desired. Setting the fence equaloE to or greater than the device size gives a totally noncompressed diskQG and is better handled with other host programs. Setting the fence value C to zero means the entire disk, including the index file, is kept onnH compressed storage. The fast compress/decompress algorithm and the cacheB make this a workable configuration also, though it means that manyC directory oriented functions will be competing for compressed spaceCD cache with file access functions. It is purely a customer option how= much if any of the disk should be stored without compression.iF The internal cache used contains from 2 to 256 32-block "chunks" ofI disk and is of variable size. It represents a compromise between the needcF for rapid access and that for rapid searching of the cache, and also aD desire not to have too much uncompressed format temporary storage onD disk. To prevent loss in case of crashes, it is necessary to have atA least as much disk space as cache, so that buffers are on disk inhI uncompressed format while they are being written. This uncompressed spacemG is reclaimed once the buffers are used for other purposes, or at daemonRI exit. Therefore when data is being written an uncompressed version of theeI sectors involved is left on disk as the current version of these sectors. D When the cache space is reclaimed, a compressed version replaces it.D The internal cache size can be varied with the /CACHE:nnn commandD between 2 and 256 32-block chunks. The default is 64. A larger cacheC will sometimes be able to read data faster by keeping it in memory. > However, it also can mean more blocks needing to be flushed atB flush or dismount time, lengthening those operations, if the cache fills with written data. E Everything above the fence block is compressed in storage. To gettE the compressing algorithm to work well, it compresses/decompresses inwG 32 block units. On read, of course, if data is in cache, it is returnedpH immediately. Writes are handled in a "safe" order so that no matter whenJ the system may crash, a clean copy of the data is on disk and recoverable.C A clean exit results in all information on disk in compressed form,tE though in a crash, buffers that were being written to may be found ondK disk in decompressed form. Next time they are used they will be compressed.h A Size of a compressing disk is forced to be at least 4096 blocks,iH this being the virtual size. The container files take a minimum of aboutC 2500 blocks and grow as more space is needed. The fence location is D up to the user. The virtual size is the volume size presented to VMSC as the disk size. Normally this should be on the order of twice the E disk space you actually want to use, since compression will store theeG data in less space. However, the container file will grow only as spacee; is actually needed, so in general not much space is wasted.r F If large disks are needed, Squash handles up to 16GB (which - care! -K might be bigger than VMS allows in a file structure in some versions). FortJ larger sorage, recall too that multiple FR units can be set up as a volumeK set. Actual space used for the disk depends on the data stored. Initially,sH the system will allocate approximately 2500 blocks of storage (enough toG cover the cache plus a little working room) and will extend the file in I 2048 block increments as needed. Should file extension be impossible, theuF driver will return I/O error codes to the application to signal that aD write failed, but data will not be corrupted which has been written.H Rather, it will be necessary to remove some items to make room. Not allK data compresses equally well. Previously compressed or encrypted data tends I not to shrink at all, but must be stored as is. On the other hand, sourcenH files or text tend to shrink to half their original size. Executable orE object files tend to shrink to 2/3 or so of original size. Some verydF regular files (pictures and the like) may shrink to as little as 3% ofH their original size. Because Acorn Squash won't grab any real disk spaceG until it is needed, "declaring" a large disk volume is cheap to do. The I cost in terms of actual storage is only one disk block per 4096 blocks ofsF declared size. However you do need to watch how much actual storage isK being used. Because you may want to limit the actual space used, some otheruG virtual disk drivers are supplied also. You can limit the actual spaceS usage by either of two methods:s C 1. Place the actual storage on a virtual disk of size N blocks. NowhD actual space used cannot exceed N (though you will always have those5 N blocks tied up on the virtual disk). Alternatively,u B 2. Place actual storage on a volume with disk quotas enabled, makeE sure that the compression daemon does NOT have the EXQUOTA privilege,aB and run the compression daemon in an account with diskquota on theB volume of N blocks. Now, too, the virtual disk storage will never ? exceed N blocks, and space it is not (or not yet) using will beu available for other uses.f NOTE: B The FR device units being created must buffer data, and allocate aE 32KB chunk of nonpaged pool when the first read or write operation isiC done to the disk. This can mean that your SYSGEN parameter NPAGEDYN ; will need to be increased to avoid its dynamic expansion orpB exhaustion. Thus, ensure that NPAGEDYN is increased by 16384 bytes@ times the number of FR units you expect to be using. An assembly; parameter of FRDRIVER allows it to give up this pool on I/Oi@ completion, but this will slow operation and probably cause poolB fragmentation when done over a period of time, so this is not done@ here. Because pool is not allocated until an FR unit is actuallyD connected, it is OK to connect many FR units, so long as pool enough0 is available for those units which will be used. Read-Only SQUASH daemon C Backups of the FR devices work like backups of any other VMS disks. > However, you have also the option of backing up the compressedE container storage, saving space and time. To facilitate data recovery,F in case of disaster, Acorn provides a read-only daemon of Acorn SquashD which can be used to read containers, but cannot write them. (WritesB will simply be ignored as though they had taken place, but without@ altering the data.) This daemon can be used anywhere and may beC distributed freely so that offsite recovery of data from backups oflB compressed disk containers can be carried out. It also enables youA to use Acorn Squash as a means of distributing material if you sorB desire. The command SQUASH/NOWRITE activates this read-only daemonB instead of the read/write one. This daemon, and the driver, may beD distributed freely. The read/write SQUASH daemon however is licensedB and may be distributed and used on Qv $ SQUASH014.A ! ![ACORNSQUASH.CODE.A]SQUASH.DOC;11_A2;8 M f 0 ly according to the terms of theB Acorn license. (Strictly speaking, the driver and read-only daemonB images are licensed also, so they may be used and distributed, butD parts may not be copied or analyzed for purposes of building derived? works.). You may distribute the entire SQUASH kit. However, the-D read/write SQUASH will function only for 30 days (a "trial" license)G and thereafter a license must be purchased to use SQUASH. The read-onlyhG SQUASH daemon will however work forever and does not require a license.cF Use of read/write SQUASH past 30 days is a violation of US Federal law$ and similar laws in other countries. - Write-Back Mode Cache (less safe but faster): B When Acorn Squash in the full safe version writes data, its safetyA precautions impose considerable I/O load on the host disk. It mayaB at times be desired to create disks faster, with the understandingE that orderly shutdown of the disks by forcing exit on the compressiontF daemons will produce a valid disk, but with the understanding too thatE a system crash can cause the compression disk to be invalid as a fileiC structure. This will often be adequate where the disk is to be useddD for scratch storage, or where the intent is to fill the disk up from> other data that is on hand elsewhere, then run the full-safetyH version of Acorn Squash later to ensure the disk doesn't risk corruptionG at every crash. Basically the writeback version does NO writing to disk>G until it needs space in memory and makes no attempt to clear everythingcE to disk until it exits (via force-exit for a normal shutdown). Once akF flush or dismount completes, data is recorded safely to disk. Also, ifG you use the /FENCE feature, blocks below the fence value are treated inaD write-through fashion; that is, data is written to disk immediately. M To make this simpler to use, the write-back code is built in as a separate-F mode of operation in the Acorn Squash product, triggered by use of theK /WRITEBACK switch in the SQUASH command one uses to start the package. 4 NoteoA that there are two ways to cause clean exit with the unsafe mode.fC First, one can use a program to $forcex the compression ACP images;hD the exit handler will then clean up. Second, one can simply dismountH the disk. The driver will send a message when the function IO$_AVAILABLEK or the function IO$_UNLOAD is seen (which dismount does) so the compressiontL process can again clean up. The dismount will not complete until the cleanupL is finished (time needed depends on how many cache buffers you allocated andF how many of these had data written in them). It is highly desirable toD allow the dismount to complete. The cleanup is done in write-throughG mode, but if it is incomplete, data will not have been recorded to disk K and various data can be lost. If you issue a flush operation (SQUASH/FLUSH pI FRAn:) and this completes, dismount will complete at once if nothing morenH has been written to the disk. Once a flush is complete, the data is safeG on disk also, and the cache freed. Note the /UNSAFE switch is a synonyme/ for /WRITEBACK in case you find this desirable.u High Compressionn I It is possible to trade compression speed for space with Acorn Squash.eH By selecting /SMALL as a command switch for the SQUASH verb, the packageG will use a high-efficiency compression algorithm where it must compressnI data. This takes longer than the normal high-speed compress, but produceseG smaller container files. On reading, parts of the disk are decompressedsI with whichever algorithm is appropriate, so that a disk may contain areasiI compressed with either algorithm, the entire disk having parts compressedpE with both. It is not necessary to remember which mode was selected intD writing the disk; this is handled automatically. The /SMALL mode canB be selected where the disk is being populated with some items, andE ignored for other writing. Note that decompression takes a bit longertG in /SMALL mode compressed sectors, but is much faster than compression.b= On faster machines, use of /SMALL mode can be a good default. Shutting Down B SQUASH will cleanly exit and write all data to disk when you issue? a DISMount of the disks. The SQUASH daemons will then exit, andp@ dismount will not finish until this is complete. If you wish not@ to have the SQUASH daemons exit, you may however use the commandD DISMOUNT/NOUNLOAD instead, which will cause SQUASH to flush all data> to disk, but will not cause an exit of the compression daemon.D The disk can then be remounted. This can be useful where you want to perform a sequence like: $ MOUNT/OVER=ID FRAn:r
random fixupse $ DISMO/NOUNL FRAn:r $ MOU/SYS/CLUSTER FRAn: label to make a disk available.i B It is however necessary to dismount SQUASH disks before their hostE volumes, since the SQUASH daemons have open files on the host volumeskB and for maximum compression should be allowed to flush all data toC compressed disk buffers, then closing the files so the host volumese can dismount cleanly.l Environment ? Acorn SQUASH processes need sufficient virtual memory for their < work, plus enough for their caches. The cache alone can take> 8192 pages, so that Squash processes should allow on the orderD of 20-30000 pages of pagefile quota. Not all will be used in case of? lower process cache, but it is best to allow this much at leastr? per daemon. This will happen automatically if the quotas of they> account used to run SQUASH_CONFIG.COM are this high, as should" be the case with a system account.B It is good practice for the host disk on which the Acorn Squash? container files are kept to be set /HIGHWATER to inhibit randomxD rubbish from appearing to be valid data. The program does write someF check information to inhibit this, but old index information can still> fool it in very unusual circumstances. Better safe than sorry.
Licensing C Acorn SQUASH contains two commands to handle licensing. The commandi $ SQUASH/LICENSE:filenamee B will generate a license key request form which can then be sent toG Acorn to get a permanent SQUASH key. (A 30 day "grace" key is installedrC automatically on the first use of SQUASH to provide time for this.)y6 The output goes to "filename" (default is SYS$OUTPUT). ' To install the key, you use the commandd $ SQUASH/INSTALL:keyvalue and $ SQUASH/BIG/INSTALL:keyvaluen 6 This installs the permanent SQUASH key on your system. Other Packagesl I You can use SQUASH with striping or volume shadowing, or make volume setsdE out of SQUASH disks, or can put SQUASH container files on stripesets, E volume sets, or shadow = sets. You can also legally run defragmentationhD packages on SQUASH disks, though this is a useless exercise. BeneathG driver level, SQUASH has its own storage system which a defragger knowswF nothing about, and defragmenting a SQUASH volume may actually increaseH the underlying fragmentation. While SQUASH is operating, the compressionI daemons have the container files open, so it is safe to defragment a diskeH containing SQUASH volumes whether or not SQUASH is running; there are noE "hidden locks" or the like to confuse a defragger. Generally you will G need to dismount SQUASH volumes and stop the compression daemons if youtF want to be able to move SQUASH container files around, though, as mostG defraggers haven't figured out how to move an open file. (There are atrE least two methods for moving open files safely, but they are somewhat intrusive at the system level.) I You can also use VMS Backup to save SQUASH container files instead of the G SQUASHdisk contents. This takes less space and tape, and less CPU powerc@ as the decompression step is avoided. To do this, however, it isG essential that the SQUASH disk be quiescent. Either dismount the SQUASHeD disks first, or at least use SQUASH_FLUSH on them and ensure by someF other means that no writing to them takes place. Dismounting the disksC and deleting the compression daemon processes is the safest course.tD The SYS$MANAGER:SQUASH_SHUTDOWN.COM script can be used to ensure theF SQUASH disks are dismounted and all data flushed to disk (important ifG you were using /UNSAFE mode!!). You can then STOP the compress daemons. I If the compress daemons are started via SQUASH_CONFIG.COM, they will have F process names like SQUASHFRAn and can be so identified in SHOW SYSTEM. B Other software will work on a SQUASH disk exactly as it would on aE locally attached VMS disk using, e.g., the SCSI disk driver DKdriver.o H If the volume containing the SQUASH disks fills up and SQUASH cannot getE space, it will simply report write errors to the calling programs. If H yo 3_f $ SQUASH014.A ! ![ACORNSQUASH.CODE.A]SQUASH.DOC;11_A2;8 M f - A ur applications start to receive write errors, either make room on theC containing volume, or just delete any partly created files from theuG SQUASH disk and use it normally. If it's out of room, it's out of room.EF Some space might be reclaimed by copying selected files off the SQUASHE disk, dismounting and stopping the compress daemons, starting them inoH the /SMALL (high compression) mode, and copying the data back. This willC cause it to be compressed via the high compression mode (if you use I $COPY/OVERLAY) and allow some space to be reclaimed on the SQUASH volume. If Someone Screws Up... D If someone aborts the compression daemon while a compression disk isA active (instead of using $forcex or other means to force EXIT), aiH process may become stuck with an outstanding I/O which the daemon cannotA completely process. In this case it may be possible to recover byc the following steps: G 1. Stop the process that has the I/O outstanding so no more I/Os willh take place.F 2. Use the SQUASH/ C CLEAR FRAn: command to terminate the last I/O with
an error.C 3. Optionally dismount the FRAn: device (which will now be markedo' offline). Note that this is dangerous.r F The compression daemon should not be aborted normally; this representsG an exceptional condition which should not happen. The /CLEAR command is I provided for emergency use only. Dismounting under such circumstances canrG cause XQP errors that will induce VMS crashes, so be careful if you tryeC this. Squash normally has the "no delete" bit set on its processes,tD so they can't be deleted in normal circumstances. However, a $FORCEXE can still be forced which could cause trouble. The SQUASH daemons areaB necessary for their disks to function and should not be deleted by? any automatic process killers. Squash will attempt a cleanup if I $forcex is called, but when this is uncontrolled it can produce problems.h The Read-Only SQUASH Daemon F SQUASH comes with a read-only version ofthe daemon which may be freelyG distributed and used. It is used exactly the way the r/w daemon is, butsA it requires the command to start with "SQUASH/NOWRITE" instead of.E just "SQUASH" (or "SQUASH/NOWRITE/BIG" instead of just "SQUASH/BIG").u D The Squash read-only daemon and other parts of the SQUASH kit may beB distributed to others and used. However, SQUASH.EXE is usable onlyA with an Acorn license and should not be distributed save to sitesd@ which wish to try it using the automatic 30-day grace license itA will install with the intent of purchasing i F t if it will be used.m< Anonymous distribution should contain neither SQUASH.EXE norB the object files used to build it (on VAX, this means SQUASHD.OBJ,E and on AXP this means ACNSQSDV.* and ACNSQUV.* and on either it meansmB APK*.*. Other object files may be distributed if there is a desire, to avoid problems that relinking can solve). D Sites wanting to distribute SQUASH container files and the read-only; daemon to access them should edit the command files used tod; start their SQUASH disks, replacing the SQUASH command withs9 SQUASH/NOWRITE, and instructing the recipient to edit thed: container file specification, and perhaps the FRAn: device< name, to match what they have locally. Provision needs to be: made also to load the FRAn: driver and connect FR units as needed for Squash disks. 6 The supplied SQUASH_CONFIGURATION.COM outputs files in@ sys$common:[sysmgr] which the squash-startup.com procedure uses.@ These can be edited. In particular the SQUASHfrdevicename.DAEMON@ command file needs to have the FR unit number and container fileC names edited to reflect the local conditions, and needs to have them, $SQUASH command replaced by $SQUASH/NOWRITE. ? For example, one such file (a scratch SQUASH disk in this case)h looks like:r - SYS$COMMON:[SYSMGR]SQUASH_ARISIA$FRA5.DAEMON:A
$ set noon! $ set process/priv=(all,nobypass) $ set process/name=_ARISIA$FRA5:F $ squash /size:20000 /fence:300 /cache:15 _ARISIA$FRA5: DC5:[JNK]XX.YY $ logout A To work with the read-only daemon using unit FRA3: on node MUMBLEaB and with the container files named DKB100:[SCRATCH]TEMP.SQUASH and= DKB100:[SCRATCH]TEMP.SQUASH_IDX instead of DC%:[JNK]XX.YY andw2 DC%:[JNK]XX.YY_IDX, the file would look like this:
$ set noon! $ set process/priv=(all,nobypass)a $ set process/name=MUMBLE_FRA39 $ squash/nowrite /size:20000 /fence:300 /cache:15 FRA3: -d DKB100:[SCRATCH]TEMP.SQUASH $ logout D Note that the only changes (apart from wrapping the command line for: legibility) are to change filename, FRAn: device name, and@ add the /nowrite switch. (The process name change is a good idea but not necessary.)o : The device name should be edited in the .shutdown file and= in the .startup file, and if thefiles are renamed, references @ between filenames should be edited also. It may be (on AXP/AlphaB it will be) necessary to ensure FR devices are loaded sequentially also.a < To facilitate shipping Squash files to other sites, the file@ READONLY_LOCAL_SET.COM exists in the Squash distribution kit. If one ships another site: 1. The container filesG 2. The Squash kit, less squash.exe and object files that go exclusivelys into making it up, andA 3. The squash*.startup, squash*.daemon and squash*.shutdown filess, which SQUASH_CONFIGURATION generated 4. READONLY_LOCAL_SET.COMk B then the recipient can use READONLY_LOCAL_SET.COM to customize theI startup files to reflect where the container files are in the recipient'srD system, which FRAn: unit the recipient will use, and so the readonlyK daemon will be used. The new start files are created in sys$common:[sysmgr]x> so the normal squash startup command file will work with them. I This support for readonly Squash requires some work to understand what islI going on, and Acorn intends to make this easier in future versions. It isyL however intended to provide basic useful functionality now as well as in the future.l Odds and Ends D The SQUASH configuration utility will create SQUASH daemon processesG and attempt to control their environment somewhat to ensure SQUASH willkG work correctly. In doing this, it will turn on volume highwater marking/I (needed to ensure no old index file blocks get misinterpreted as current)eE and will set process quotas for memory and file access for the SquashUJ daemons to values known to work, running the Squash daemons in a way whichH will not invoke system login scripts (which have been known to interfereD with operation in a few cases). Memory sizing is handled by giving aE large WSEXTENT to the daemons, which should avoid causing problems toiE the rest of the system. However, the SYSGEN parameter WSMAX cannot bepG exceeded, and if your site's value for WSMAX is very small, the daemonseD may page excessively. The compression/decompression algorithms tradeH space for speed, and the cache chosen needs 32 pages (pagelets on Alpha)D per buffer. If you make the read cache 256 buffers long, that's 8192 pages. F SQUASH is subject to pauses in processing at times. These occur mainlyJ when it is extending its container files, but can be especially noticeableE when the host disk has run out of room. In this case, SQUASH will settG an internal flag that indicates no more host device space and basicallytD abort most writes early, giving the return code SS$_DEVICEFULL. WhenA this happens, SQUASH will not keep trying to grab more space, butcI will return errors to the user. This condition can be reset by a dismountfF operation and restart, or by the SQUASH/FLUSH command, should the hostC disk have some files freed up. Partially written files in that case F should be recopied, of course. Other delays may occur at times, as theF compression or decompression of a buffer is treated as a single atomicD event and this is occasionally slower than normal (particularly with@ the high-compression algorithm). However, Squash will eventually finish.y SQUASH internals:h > The package uses a sizable internal cache to avoid the need toA re-compress and re-decompress data during operation. NeverthelessnD it is extremely conservative in terms of maintaining data integrity.C The key problem a compressing disk faces is that a system crash can J leave data partially compressed on disk, giving an invalid disk structure,F unless care is taken in the design to prevent this. While the benefitsI of a cache in speed are obvious, a naive implementation can be vulnerable C to a system failure before the cached data can be recorded on disk. D Ordinary benchmarks will not reveal this (and indeed will favor suchB implementations), but these "faster" disks can and eventua $ SQUASH014.A ! ![ACORNSQUASH.CODE.A]SQUASH.DOC;11_A2;8 M f R lly willA lose or damage your data. (If you ever see a "Writeback error..."oA message from some compressing disk, watch out; it's vulnerable tom5 loss or corruption of your data if the system fails.)r D Acorn Squash avoids this by careful ordering of operations. WheneverF data is to be written to a cache buffer, a decompressed version of theC buffer is allocated on disk and recorded there. Once data is safely G recorded in this format, the index is pointed at it, and the compressedeF version's space is reclaimed. At no point in this process will data beD lost, though a crash might lose some free space on disk. Every writeF to this buffer produces an immediate write to disk of the new data, soH that data cannot be lost by a crash. When the buffer is needed for otherF uses, it is compressed, recorded to disk, the index pointed at it, andH the uncompressed space is reclaimed. The result is that the data residesH normally on disk compressed, but can validly be on disk uncompressed andB will be used correctly should the disk be brought up again after aF crash. The uncompressed format is also used where compression fails toD save space (as in already compressed or encrypted data) so that dataF stored on the Acorn Squash compressing disk cannot take more room thanE it originally did. Data is compressed in units of several disk blocksgG so that the adaptive compression algorithm used gains good performance. J The care taken to ensure all writes to disk are safe at every step imposesI some overhead, but ensures data cannot be lost in power failures or othere crashes. F On read operations, data is simply read into cache and decompressed ifB this is needed, and delivered to the application. This requires noF extra disk access, and because compressed data is shorter than normal,E it means less disk time is needed to access data than would otherwisemF be necessary. Thus the cache makes data available faster than a normalA disk would for reads. Because the system records data immediatelymG for writes, writing will be slower than normal. Unless your data safetylI is to be reduced by waiting for a full buffer, however, this is necessaryoD to provide safe storage of your data. A product claiming to speed upC writing as well as reading either abandons this safety, or performsoC many extra compress/decompress operations, to the detriment of yourp? CPU availability, to handle an entire buffer of blocks for eachwF user operation which typically will be for only part of such a buffer. The Types of Compressing Storage F An advantage of using a virtual disk for compression, instead of usingC a file migration and compression package, is that operation is botheG continuous and automatic. With a file migration package, compression isoG typically done in batch runs at night, though activity can be suspendediG if a disk fills up in some products to allow space to be reclaimed. DueoB to the speed of decompression and reading, backups of the data areE of normal files; the algorithm used has very high performance on readaG so this is practic X al and can gain enough speed due to less disk readingt) to more than make up for decompress time.C G A file migration package, on the other hand, waits till a file is to be C opened and then generally speaking must suspend the opening processnC long enough for the entire file to be migrated to its new location,eF possibly being decompressed in the process. Then the open can proceed.H Acorn Squash on the other hand needs only to decompress what is actuallyD read, as it is read, with a very high speed algorithm. The result isG that timeouts, bizarre process states, and file based, expensive sweeps D of a disk to detect files to migrate offline are avoided completely.H These are particularly intrusive when they happen during main operationsC if a disk fills up. At that time, a file based package will have to,F either suspend all writers to a disk or let allocation failures start,F until some space-gathering script that finds and then compresses filesJ one at a time to make space runs, possibly consulting a database to decideL which to use. Meanwhile, Acorn Squash, which has been compressing everythingF as it goes along, never has the possibility of these long delays which can crop up unexpectedly.A F Even hierarchical packages which claim to migrate "hot" files to solidI state disks and back suffer these problems. They must suspend activity on F the files being moved until a complete copy has taken place, which canH cause timeouts for critical applications at unexpected points. Squash isI much more predictable, [ and its maximal delay is that needed to access onetH virtual track (32 blocks) of disk, not an entire file of possibly scoresD or hundreds of megabytes. The built-in SQUASH cache can also provideF considerable read speed-ups. When data is in the internal cache (whichH can be up to over 8000 blocks), it is accessed in memory with no need to+ access disk, nor to decompress extra times.s I (If it is desired to write to noncompressed backing store simultaneously,vI it is possible to shadow an Acorn Squash disk to another disk with either I the DEC volume shadowing or with the provided shadowing driver, or to use 5 a freely available shadowing driver for the purpose.)m Unsafe (WriteBack) Mode G The Writeback or Unsafe mode is primarily present to allow Squash disksSB to be used in situations like initially loading the disk, or whereE the Squash disk is scratch storage, where loss of data is no problem.eD The normal (and safe) mode does more disk I/O, but ensures that data. at every instant is safe on disk and complete. H However, where for one reason or another a site elects to use the unsafeE mode, certain improvements in V1.4 and later of Squash have been madeXH to allow unsafe mode to be somewhat less unsafe than before. Please noteE that index file reserved areas are never cached, so if you are trying/G to use unsafe mode at all regularly, you should allocate a large enough H index file area to cover the index file you'll use, so that a crash will not corrupt the file structure. 4 The improvements to "Unsafe" mode are the following: F 1. Squash can be set up to do immediate flushing of buffers which haveF been written with logical I/O. Normally, VMS uses logical I/O to writeD directory files and the index file, and applications use virtual I/OH to write normal files. Squash will detect this in unsafe mode by defaultG and flush a buffer written in this way to disk before going on, so thatoF directory files and the like will be minimally exposed to crash causedH losses. (Note that there are situations, like some remote disk packages,A which use entirely logical I/O. In those, you may want to disablel this special treatment.) F 2. Squash will detect that no I/O has arrived for 0.6 seconds or more,C and if so will flush a written-to buffer to disk, repeating this ifED the idle situation continues. This will cause normal data written inH unsafe mode to be fairly quickly flushed to disk once the system is idleE enough to do so. Previously, this did not happen until a manual flusheE command was issued, the disk was dismounted, or the buffer was neededmE for other purposes. This could result in data sitting in Squash cachetF for fairly long periods. With this improvement, the data is flushed toD disk once the disk becomes idle. Since a new I/O check is made afterC every buffer is flushed, this does not hold user I/O up much. Thus,iD a Squash disk a few minutes after it becomes idle will have all data safely on disk.y F 3. The normal mode of flushing idle buffers waits 0.6 seconds. AnotherC mode is available which will flush idle buffers one at a time if noiE I/O is available. This can be selected, but the check happens so soonxB after the previous I/O finished that such flushing will occur veryE frequently. For this reason the "fast flush" mode is not recommended.w F These modes are controlled by a /MODE:nnn switch on the SQUASH command9 line, where nnn is a bitmap. The meanings are as follows:o Bit Meaninge? 0 Disable flush of log_io packets and disable "fast flush" both " 1 Disable flush of log_io packets./ 2 Enable fast flush mode. Bit 3 must be 1 also.,5 3 Disable lazy flush mode after 0.6 second idle time.f E The default value is 0 which allows immediate flush of log_io packetsi and 0.6 second idle flush. E A value of /MASK:15 will produce the Squash 1.3 and earlier behavior.p @ While it must be emphasized these changes do NOT make /writebackF mode really safe, they do reduce the dangers of using it considerably.D Thus one might be willing to use a Squash disk in this mode providedD the default behavi 4 $ SQUASH014.A ! ![ACORNSQUASH.CODE.A]SQUASH.DOC;11_A2;8 M f f c or was selected and provided the index file was inE a never-cached part of the disk, AND further provided that backups ofiC the Squash disk were taken fairly often to cover the situation of al> power hit at just the wrong moment. Remember that user data isA less well protected than system data in this mode, and there is aoB period during which updates to the disk exist only in memory. ThisG period is very brief for directories, nonexistent for the index file if C it is in the never-cached area, and may range for a longer time for C user data depending on how long the system remains active. Read I/OsD can keep flushes from occurring, so be aware that in this mode, safeD writing to disk occurs only after the disk is idle a few seconds, orA at a manual flush or a dismount. Where your data must get to disky: safely, use the normal mode instead to be fully protected. D Finally, remember that the speed difference between the Squash modesG is ONLY for writing. On reading they are all equal, and all quite fast.t LARGE DISK SUPPORTF An update has been made to SQUASH to support disks up to 16 GB in sizeC (up from 1GB in earlier versions.) The older version of the code istD still present and used for small disks, but the new code can supportM all sizes and can read and write disks created with the older Squash versionsl also.a F Note that VMS 5.5-x and earlier have a limitation such that their fileA structures cannot get bigger than 8.5GB (and there have been somemB reports of problems at half this size). VMS 6.1 fixes this, but ifB you want to use Squash with 16 GB disks on VMS 5.5, you'll need toD use something like VDdriver to partition the Squash disk as you need it.pon of your data if the system fails.)r D Acorn Squash avoids this by careful ordering of operations. WheneverF data is to be written to a cache buffer, a decompressed version of theC buffer is allocated on disk and recorded there. Once data is safely G recorded in this format, the index is pointed at it, and the compressedeF version's space is rec * [ACORNSQUASH.CODE.A]SQUASH.KRF;4 + , 9 . / 4 T f - ! 0 1 2 3 K P W O 5 6 `$ڗ 7 U˟\ 8 q 9 G H J
Key Request Form: Date: M To obtain your Squash(tm) Software Key, send this form containing your System J Identification Code (below) to Acorn Software, Inc., or contact your AcornO Software service or sales representative. If you are outside of North America, $ send your System Identification CodeN directly to Acorn Software to obtain a Software Key which will enable full use of . $ Acorn Software, Inc. 179 Great Road! Acton, MA 01720 9 Phone: 508-266-9800 Fax: 508-266-9707 4 E-Mail: LICENSE_REQUEST@ACORNSW.COM I Please complete this software key request form by providing the following J information before sending this form to Acorn Software, Inc. or your localE Squash distributor. Only key request forms that have been filled out $ completely can be processed. B Company: _________________________________________ B Address: _________________________________________ B _________________________________________ B _________________________________________ B _________________________________________ B Country: _________________________________________ B Phone: _________________________________________ B Fax: _________________________________________ B E-Mail: _________________________________________ B Contact Person: _________________________________________ B Title: _________________________________________ M The following is a list of System Identification Codes for some or all of the L VAXes in your VAXcluster. To include the System Identification Codes (SICs)T for additional VAXes in your VAXcluster, log in to those VAXes and issue the SQUASH/LICENSE=filename command for Squash. SIC: " * [ACORNSQUASH.CODE.A]SQUASHD.OBJ;40 + , 9 . / 4 ` - ! 0 1 2 3 K P W O 5 6 ȏ\ 7 8˟\ 8 xq 9 G H J 4 ACSQV01-002 8-SEP-1994 13:15 VAX MACRO V5.4-30 MACRO/OBJECT=OBJ$:ACNSQUV.OBJ SRC$:ACNSQUV.MAR! - AcornSquash host program main ACSQ APKCALL APKKEYADD
AVTECH_PRODUCT_CODE BUFDMO BUFRD BUFWT
CLI$GET_VALUE CLI$PRESENT CLI$_PRESENT
CTL$GL_PCB
DSC$K_DTYPE_T FILCLS FILOPN FLUSHLOG FLUSHTOP IMPCNT
IOC$SEARCHDEV LICMSG LICREQ LOGLATCH LXYAST MBXSET OTS$CVT_TU_L SAVMODE SCH$IOLOCKW SCH$IOUNLOCK SQU_CHECKDEBUG
SYS$ASSIGN
SYS$BINTIM
SYS$CANEXH
SYS$CANTIM SYS$CLREF
SYS$CMKRNL
SYS$CREMBX
SYS$DASSGN
SYS$DCLEXH
SYS$GETDVI SYS$GETDVIW SYS$QIO SYS$QIOW
SYS$SETIMR
SYS$UNWIND SYS$WFLOR . ABS . P $ABS$ e P P P P P P P P P P P P P P P P P P P P P P P P P FDHOSTD_DATA P
( 3SYS$DISKQ&Q 4P4P4P4P4P4PPQN Q Q # Q $RMSNAM PFD0.DSKPQ Q PFDCONT.DSKiPQQ
Q PDQB Q Q Q 4 Q Q P ,Q* Q Q$ QP Q Q( ( LQ ( Lt | SQU1 Q( ( Q ( Q P
DSC$K_DTYPE_T%(Q Q
DSC$K_DTYPE_T%8Q L 3 CLEARQ&Q Y 3KEYQ&Q d 3UNITQ&Q
p 3FNAMQ&Q
| 3FENCEQ&Q 3SIZEQ&Q
3UNSAFEQ&Q 3MODEQ&Q
3WRITEBACKQ &Q 3INITQ&Q
3SMALLQ&Q 3NOCOMPRESSQ
&Q 3CACHEQ&Q 3I NSTALLQ&Q
3LICENSEQ&Q
3VERSIONQ&Q
SQUASH (tm), Version 1.4B Copyright 1994, Acorn Software, Inc.
Q Q
DSC$K_DTYPE_T%Q d Q Q t \ 3TT:Q& N Q Q | 30000 00:00:00.60Q&Q FDHOSTD_CODE P
ACSQ &l x
SYS$BINTIM CLI$PRESENT P CLI$_PRESENTT |~T X
SYS$ASSIGN P:|~|~ݏ@ !|~<0~<T ~ SYS$QIOW <T ~
SYS$DASSGN SQU_CHECKDEBUG CLI$PRESENT P CLI$_PRESENTJ
CLI$GET_VALUE P1 APKKEYADD CLI$PRESENT P CLI$_PRESENTJ
CLI$GET_VALUE P1
LICREQ LOGLATCH 0`
CLI$GET_VALUE P1e
t|x|x3x3 CLI$PRESENT P CLI$_PRESENT<
CLI$GET_VALUE P t OTS$CVT_TU_L Pt LICMSG l 9w $ SQUASH014.A 9 ! "[ACORNSQUASH.CODE.A]SQUASHD.OBJ;40A2;8 " p CLI$PRESENT P CLI$_PRESENT l CLI$PRESENT P CLI$_PRESENTld CLI$PRESENT P CLI$_PRESENTd CLI$PRESENT P CLI$_PRESENT Џd CLI$PRESENT P CLI$_PRESENTpH CLI$PRESENT P CLI$_PRESENT 1 l
CLI$GET_VALUE P1 Џ@ h CLI$PRESENT P CLI$_PRESENTY
CLI$GET_VALUE P1h OTS$CVT_TU_L hh Џ@ hЏx CLI$PRESENT P CLI$_PRESENTX x
CLI$GET_VALUE P1? OTS$CVT_TU_L P1" CLI$PRESENT P CLI$_PRESENT<
CLI$GET_VALUE P1 OTS$CVT_TU_L P1 APKCALL p Џ 0 , FILOPN 0 PP1 , ( ( ?( ( 0 |~ 0< ~ SYS$GETDVIW |~8t
SYS$ASSIGN P |~80
SYS$ASSIGN P1|~ <8~
SYS$GETDVI P
Џ P1X |~ ݏ= ݏ@ @
SYS$CREMBX P1|~ <@~
SYS$GETDVI P1]
SYS$DCLEXH H {
SYS$CMKRNL P 3( 3D 3 T|~|~T |~< ~<8~ SYS$QIOW P1 MBXSET t SAVMODE SYS$CLREF SYS$CLREF t4l,t!@ D FLUSHLOG @ x1a tXtO|~|~ |~<'~<@~ SYS$QIOW P)"3 IMPCNT Px3 FLUSHTOP @ ||t0|~|~|~K`QUaQ @ E[Z1` PQ1Q Q Q Q` qPQ
x QLZW_DCM &UUH P D QPH D P QԑPD ЬVV мWW @ Џ @ WW xWWЬ XXY} R<\ SRfZZ[RSXYvZZTXY SWSPì XYYì XYYPU\ U\ \ RR RSRfZZQRSZU0[Zя ZPT7,PY< 4JPT@hP~ я Z:< 4JPPXPPYnPP @ 4J@h< 4JZZhЎPPXZT XYZZTU[ 4EM Z @ 4E[ P< 4KPP 4EQ[1 * QLZW_CMP x QLZW_DCMe QLZW_PURE_DATA QLZW_COMMON_DATA` MYLIMS QLZW_CODE 1 FILOPN0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79
FILOPN P ;
FILOPN |P X W X X
B
B LUN16 B \ d h LUN17
B
B
t LUN16 B \ \ l \ l \ l \
B LUN17
B P X [Ь(4}PQ<
` ICACHE P < , n @
, n < PQ @@ RԂPQ Q Q Q B h IVLEN PWWt ի R XR x WP@ ˼ MOVCH R < @ PƏ PP Ы |RRScÄ R \lRB RP IGETSPC P$ ѫ ITAKE RSR R$PP( ITAKE Ы( R1 , n Ы RSի 1 IGETSPC P$ ITAKE Ы$CRS1 RSЃ0 IGIVE R 4,
DFILEXTEND ì8PPS RSTT T R0@ VPUTBLK k T RT RPP0T PUTBLK k RTS RRЬ
d PUTBLK k t PUTBLK ˄ PUTBLK lPB P˔ IGETSPC P$ ù R e $ SQUASH014.A 9 ! "[ACORNSQUASH.CODE.A]SQUASHD.OBJ;40A2;8 ܍ " * ˤ ITAKE RSR R$PP(˴ ITAKE Ы( R Џ -1RSTЄP Ǐ PUUR U P! P P P" P &P OP TP cP }P PD P P .P` HPF ZP pP P PR P@ P P0 P P P P LP pP P PC P6 P PO #P eP PG P6 P q e 1 BUFDMO0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79
BUFDMO P @
BUFDMO LP $ H@ ( H@ H@ , 0 , 4 0 < @ D < < , 0 , 4 H H < < $ < H H P
[^ @ PUTBLK k P PUTBLK
\R
SRcd` PUTBLK k ctp PUTBLK S\R W 1 @@ ZӪ1 ԫjԫˀ GETIDX ѫ , n < @|R x WP@ ˘ ˰ QLZW_CMP PRR R x WP@ ˰ ˬ
LZH_ENCODE P Rѫ > ի R XR x WP@ ˼ MOVCH R < @ PƏ PP
Ы |RRScÄ R \lRB RP IGETSPC P$ ITAKE RSR R$PP( ITAKE Ы( R1 , n Ы RSի 1 IGETSPC P$ ITAKE Ы$CRS1 RSЃ0 IGIVE R 4,
DFILEXTEND ì8PPS RSTT T R0@ VPUTBLK k T RT RPP0T PUTBLK k RTS RRЬ d PUTBLK k t PUTBLK ˄ PUTBLK lPB P˔ IGETSPC P$ ˤ ITAKE Ĺ T RSR R$PP(˴ ITAKE Ы( R Џ -1RSTЄP Ǐ PUUR U `P ~P Ph P P@ P PV PE P# $P3 0P JP
VP \P P P P P P PR )PE 3P OP TP P P P P P Pk P` P/ ]P P PV PE P P P bPq P P! 3P ?P WP \PS zP1 P) P P P P % P, 3 P Z P6 o P P P P
0 BUFWT0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79 BUFWT P @ @ BUFWT d P @ , 0 4 8 < 8 @ < D H L P L P P P T P T P 4 T P T P 4 X P D H X P $ P ` D H $ P Q P [^Ь\hм < < ի t|ˀ l BUFRD м
B PPP
B 1 м
B P PPR PQ 1 QYR QSC
?@ R PQ1 QZ
B QYPQ@
?@ @
?@ P P
B Pë QPQx QQSPSQSSЫSS Ǐ XeSChˤ YSSxSЭVF
˨ ˜ MOVCH Ы < Y$ռ1 PƏ PPP @ ˬ FLUSHTHIS ԫ( R˴ GETIDX ի( , n < @| , ի(1 S IGETSPC Ы,TP0 T, ITAKE Ы0UЫ,TRVfƄի( ƄRT UPRP4 ITAKE Ы4 Rΰ< @|1 U R IGETSPC P0 ITAKE EUT Ы0Eի01 8
DFILEXTEND âhV2fSSPV RPˇˋˏ˓,˗7˛B˟MˣX˧ YIP( h` P PP PX D Xk YE XP Pˌ FILEXTEND RRVYV ˨ Y ˠ SYS$QIOW VY k SYS$QIOW R X, SYS$QIOW P RDX`< SYS$QIOW R P۱ P
PUTIDX SYS$QIOW FILEXTEND $CODE $PDATA $LOCAL JIDX DIBFC L17SIZ L16SIZ NOHSP LRCD MP~ xP |P( P P P P) P P P P P (P BP VP P P !Ps &Pn ]P P P> P P P
1 GETIDX0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79
GETIDX
GETIDX P 1 1 P [Ь pԼ VަQ, n a, n tƈ PPRz P{PPPPS TR1 R R8 SYS$QIOW PUU WPRlH SYS$QIOW PUW UⱫU WRGP` PR WU 1 SCU( et t x Լ tlol Լ PS>tU2eTTPU SlmnolP Լ , Լ 7 Լ B Լ M Լ X Լ ռ 1 tlrwp{qppѫ Լ 1 ol llxlol ll |lol llPޫShU TЃlool llPhƈ ƈ @ Լ ƈ PޫS$ TЃlol ll PԼ
GETIDX SYS$QIOW $CODE $PDATA $LOCAL JIDX DIBFC BMAP LRCD qP P PQ P P P P P P P +P EP P P P P P P P- P P
P +P LP P P P> P6 P 3 LOGLATCH0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79 LOGLATCH! PSQUASH_ARBSW T LNM$SYSTEM LOGLATCH TPP \
LIB$SYS_TRNLOG @ P T
t
LIB$SET_LOGICAL @ |
LIB$SET_LOGICAL @
LIB$SET_LOGICAL @ P P [Լ LIB$SYS_TRNLOG P < LIB$SET_LOGICAL
LOGLATCH LIB$SYS_TRNLOG LIB$SET_LOGICAL LIB$GET_FOREIGN ) $CODE $PDATA $LOCAL P
) 2 GETSTAT0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79 GETSTAT GETSTAT m P P [ Џ k ACCBMAP s
GETSTAT ACCBMAP A $CODE $PDATA $LOCAL ZSTAT BMAP A 1 LXYAST0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79
LXYAST
LXYAST P P [k GETSTAT SYS$QIO NEWAXX P r
LXYAST GETSTAT SYS$QIO NEWAXX + $CODE $PDATA l $LOCAL ( MBXJUNK + 1 NEWAXX0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79
NEWAXX
NEWAXXk P ! LXXAST $ P [ k SYS$QIO f
NEWAXX LXXAST SYS$QIO $CODE $PDATA 4 $LOCAL ( MBXJUNK
1 IMPCNT0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79
IMPCNT
IMPCNTJ P [Pԫ Q\ @@ Rb \P RQ\]
IMPCNT < $CODE $PDATA $LOCAL B TRKBUF CACSIZ P ,P 1P < 3 FLUSHLOG0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79 FLUSHLOG FLUSHLOG P P [Ѽ B RS @@ TӤ dP P B PѼP PѼP FLUSHTHIS TRS q
FLUSHLOG FLUSHTHIS d $CODE $PDATA $LOCAL B TRKBUF CACSIZ + PP $P> 1P* EP NP XP
d 3 FLUSHTOP0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79 FLUSHTOP FLUSHTOPK P P [ IMPCNT Pk FLUSHTHIS Z
FLUSHTOP IMPCNT FLUSHTHIS $CODE $PDATA $LOCAL P 4 FLUSHTHIS0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79 FLUSHTHIS P @ FLUSHTHIS @P H@ H@ H@ $ ( $ 0 4 8 0 0 $ ( < < 0 0 0 < < P [ 4 PUTBLK k D PUTBLK P V@?@ 1 мWԫ@?@ ԫ T GETIDX ѫ , n < @|R x WP@ lh QLZW_CMP PRR R x WP@ ˄ ˀ
LZH_ENCODE PRѫ > ի RR x WP@ ˘ ː MOVCH R < @ PƏ PP
Ы|RRQa 8 R XhQB QP Yˠ IGETSPC P ˰ ITAKE $ SQUASH014.A 9 ! "[ACORNSQUASH.CODE.A]SQUASHD.OBJ;40;62 " ] ЫRSTS SRPP ITAKE Ы S1 , n ЫRSի1 IGETSPC P ITAKE ЫCRS1 RSЃ$ IGIVE R (
DFILEXTEND è,PPS RSTT T R$ VPUTBLK k T RT RPP$( PUTBLK k RTS RRШ 8 PUTBLK k H PUTBLK X PUTBLK hPB Ph IGETSPC P x ITAKE ЫRSTS SRPP ˈ ITAKE Ы S Џ -1RSTЄP ¹ R ^ Ǐ PUUR U0xUZJi˜˘ PUTBLK k Jiˬ˨ PUTBLK UR SRSTի UhPB P$BG@ ˼˸ PUTBLK k BG@ PUTBLK R STԫ PUTIDX RޫSЃ$ IGIVE RЏ -1RSޫTЄP Ǐ PUUR U0xUZJi PUTBLK k Ji PUTBLK UR SWWG?@
FLUSHTHIS QLZW_CMP PUTBLK GETIDX
LZH_ENCODE MOVCH IGETSPC ITAKE IGIVE
DFILEXTEND VPUTBLK PUTIDX S $CODE $PDATA ( $LOCAL CACSIZ SMLM KBLO DIDW @ BZERO FLIL BMAP MAPCT B TRKBUF BSBLK ZSTAT JIDX NOHSP DIBFC LUN1 P :P \P ^P P P P P P P P nP= P Pa PF P P P )PR 3P@ 8P KP0 WP mP yP P P P P P; -P. IP nPO P P P?
P. )P X L S 2 SAVMODE0120-Sep-1994 11:2920-Sep-1994 11:29 VAX FORTRAN V5.4-79 SAVMODE SAVMODE P м R
SAVMODE $CODE $PDATA $LOCAL MODSV 3 DECODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 R
DECODE decode_start
decode ( 4 HUF_DECODE_START DECODE_P DECODE_C
DECODE_START
< DECODE $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT DECODED P ^ HUF_DECODE_START
P< ^
U RSb. QТP@aCaPˏ PSSSPb DECODE_C PTeSPT PTC`SSSPTb DECODE_P PSPPˏ PbЬQТP@aCaPˏ PSSSPb 3 ENCODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 P ^ \լ
l< !~ MALLOC RbP(< !~bP< B~bP< ~bP< ~bP<~bP ^ Q R2R\L(L= R P2P\L=?P R2RPP\\@ = R R? @ P2P\L =pP< ^ SެUeQ2QRxPPR @ RB TQ2TP@QУ RУQ2TP@bT2TP@ae2TP| ^ R2QxPPQ @ QQU2UP@ T @ 2 QTA 2TP @UAA2 P@ | ^ Q T2TUE E2SСRCbPPEb2PPT@ С RCbPPEb2PPT@СRCbEb$E(E2
P$P@ PU2 2TxPPTP @ PPV2VP@ S @ 2 RSB 2SP @VBBD2R$RP@ PUnR2nTxPPTP @ PPU2UP@ S@ 2RSB 2SP@UBnBD ^ Sѣ$1 ף$2
RRȏ RRV2VRBX T R2V\LdV2V\LbX2XRB(RR$ ! U( RXV2X\LeX2X\Lb\\$ XT2TRB2T\LLT2T\LT 1 2TU2R RE1 2RcTBdR RRX2RRBdQQR2XޮPRW2TxWRRT @ TD U2URBУ TУR2U\LdU2U\LbUVRQR2Xn22nWxRRWR @ RR \2\RB UB 2TUD 2URB\DnDG$$V
UV
P2VRB(\\U2B\ \
2
\ \\
2\У$QQ\cPL`T2
\Q\L`R2U\Q\"Pdb 2V~ SPLIT ֣$TR2U\ѣ$\ѣ$ 1 2V\LVXdR2XޮWRU2RxU\\R @ RB Q2Q\L P R2Q\L`Q2Q\LbQVTd\2X \R22 QxR\Q\ @ \\U2U\L PL 2RPB 2P\LUB BA֣$12V\УULeT2RTBe2TRB У ULeT2RTBe2TRB2RXBLL ^ Q2\L2\LTС SLcR2T\RLc2R\TL2\LWLW 2W\LP``\\2WRСS2Bc\ \VV
2V\ \\VVTBU2U\LcP2P\\C2P\ \PP
2P\ \\PPTPT2U\ TLLU2U\LP2P\\U /P
2P\ \\PPTPT2UR T\2\\ \B2VR2WP@(\\RB \PnnU\T2nPxT\\P @ P@ Sn2S\LnС R P2S\LbS2S\L`nSP2PTDUС SDcR2U\RLc2R\UL2WSCR2R\PL RDͰC R2R\PLRD СRCbDbC C W ^ Rע @4< !~b\ l MEMMOVE S< ~b\ ! FREAD_CRC P DELETE_NODE INSERT_NODE P^ [ Rբ V
b< !~ MALLOC ScP(< !~cP< B~cP< ~cP< ~cP<~cP T2TP@(@= T S2SP@=?S T2TQQPPA = T T? @ S2SP@ =pS HUF_ENCODE_START U< !~bS FREAD_CRC P Ԣ$ INSERT_NODE Т SѢ$SS$S1 k1 MEMMOVE W FREAD_CRC V DELETE_NODE U INSERT_NODE T OUTPUT ZPТ$S
Xע @-< !~bP `g R
ENCODE allocate_memory l l
init_slide | child T < makechild X split insert_node delete_node get_next_match ]
encode H ѹ ᭯ GET_NEXT_MATCH DELETE_NODE INSERT_NODE SPLIT MAKECHILD CHILD
INIT_SLIDE MEMMOVE FREAD_CRC HUF_ENCODE_END HUF_ENCODE_START OUTPUT MALLOC
l
INIT_SLIDE
< CHILD
< | MAKECHILD
| SPLIT
INSERT_NODE
DELETE_NODE
GET_NEXT_MATCH
ENCODE <
$CODE , $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT OUT_BUF_ADR NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN < ~bP !fP e dѢ$ Т $Ѣ$SS 2PP@ ~jvP2Q2XPPQQˏ Q~ S~jSDע @,< !~bP `gY< ~bP !fP e dSѢ$ Т $բ k1 HUF_ENCODE_END 0 HUFV1.0 1-APR-1994 18:21 VAX C V3.1-051 P< ^ RS>n0 \Pl\SЏ U USCSPU U\L\PU1 P\PLTdSPU@\PSPU@\SJ " n SQQ P<\QP\\\\\U~S~hWPW@ P<@* ~@~h VV[ 1VF VV VF. VV ^ R 0 0 G0 P0 P
SEND_BLOCK 0 0 P0 P0 @ 0 P0 ެSc@ cP@ c cbQ0 P@aQaP0 Pa0 T0 ެQaPPD ˸0 P0 a@ ca aacaЬP@. ^ R b \l\ QP>. \Pl\
P|0 INIT_PUTBITS ^
SEND_BLOCK PUTBITS PUTBITS ^
W Uݬ GETBITS PXBݬ GETBITS PQRެTRd PBRRdS>H. PPQ`P STX1 PgS
RP\bR SU[1 GETBITS ZiQ
fwrite_crc init_getbits ` init_putbits - [ FILLBUF ZGETC GTSIZNOW ZPUTC ZGETC
< FILLBUF
| GETBITS
PUTBITS
< FREAD_CRC
FWRITE_CRC
| INIT_GETBITS
` INIT_PUTBITS s $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR4 DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN SIZNOW SUBBITBUF BITCOUNT ^P| ^ S U
TdecR88 ^
Y X ST> RbRTЬWWc 8RRRTPTD$P82PUT0T2 UV>U>TW>V>T@ Rì ZS7@hR P@gRxVVSɰYbJYY 1a 0 ZGPV1.0 1-APR-1994 18:23 VAX C V3.1-051 R
ZGP zcset L L zgetc / | zputc 8 gtsiznow 7
ZCSET
L ZGETC
| ZPUTC
GTSIZNOW $CODE 0A $DATA
UNPACKABLE OSIZ OUT_BUF_ADR P ^ Pޠ ЬRRЬ QQЬ`RQ ЬR @ Q ^ QաСRbTTSRסPSSP ^ PРQQ QRQb P P ^ \ЬP / ACLIC0 1-APR-1994 18:24 VAX MACRO V5.4-3, MACRO/OBJECT=OBJ$:ACLIC.OBJ SRC$:ACLIC.MAR ACLIC @
DSC$K_DTYPE_T SYS$BRKTHRUW SYS$EXIT
SYS$SNDOPR . ABS . P $ABS$ - P P P P P P P P P P P 1 CDEV_DATA P 3PIDQ&Q
DSC$K_DTYPE_T%Q C 3DeviceQ&Q Q( ( MQ u;@cbedf'(Hkkmmonpq225467Yx{{|=_~@ACBDD
"10#6%
Q Q t 3OPA0:Q&Q Q &
DSC$K_DTYPE_T%&
DSC$K_DTYPE_TB % Squash, Copyright 1994 Acorn Software
Qn CDEV_CODE P
LICMSG & R S T)UU[ZVWXVWWXXЏ! PP SYS$EXIT XU֞RpS|~ ecb SYS$BRKTHRUW R< ~b
SYS$SNDOPR P1
LICMSG0 CDEV_DATA1 CDEV_CODE 0 GETEFB0 1-APR-1994 18:24 VAX MACRO V5.4-3. MACRO/OBJECT=OBJ$:GETEFB.OBJ SRC$:GETEFB.MAR
GETEFB XAB$B_COD XAB$L_NXT . ABS . 1 . BLANK . P $ABS$ P P
GETEFB &I ԼЬR%Т$S XAB$B_COD XAB$L_NXTSУTTT
GETEFB . BLANK .1 2 APKCALL0111-Oct-1994 12:5411-Oct-1994 12:54 VAX FORTRAN V5.4-79 APKCALL ; PLNM$SYSTEM_TABLE SQUASH_CHECK_TYPE SQUASH-V1 AVTECH APKCALL Px t
SYS$TRNLNM @
SYS$TRNLNM @ P # 8 #
APK_CHECK_LICENSE @ - h p P [dfhޫ lprޫtޫ x|ԫԫ4
SYS$TRNLNM P ѫ ) 4 K`QUaQ @ E[Z1` PQ1Q Q Q Q` qPQ
x QLZW_DCM &UUH P D QPH D P QԑPD ЬVV мWW @ Џ @ WW xWWЬ XXY} R<\ SRfZZ[RSXYvZZTXY SWSPì XYYì XYYPU\ U\ \ RR RSRfZZQRSZU0[Zя ZPT7,PY< 4JPT@hP~ я Z:< 4JPPXPPYnPP @ 4J@h< 4JZZhЎPPXZT XYZZTU[ 4EM Z @ 4E[ P< 4KPP 4EQ[1 * QLZW_CMP x QLZW_DCMe QLZW_PURE_DATA QLZW_COMMON_DATA` MYLIMS QLZW_CODE 1 FILOPN0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
FILOPN P ;
FILOPN |P X W X X
B
B LUN16 B \ d h LUN17
B
B
t LUN16 B \ \ l \ l \ l \
B LUN17
B P X [Ь(4}PQ<
@ @ @ ` ICACHE P < , n @
, n < PQ @@ RԂPQ Q Q Q B h IVLEN PWWt ի R XR x WP@ ˼ MOVCH R < @ PǏ P\\
Ы |RPRb P VfPB P\ IGETSPC P$ ITAKE RSR R$PP( ITAKE Ы( R1 , n Ы RSի 1 IGETSPC P$ ITAKE Ы$CRS1 RSЃ0 IGIVE R 4,
DFILEXTEND æ8PPS RSTT T R0@ VPUTBLK k T RT RPP0T PUTBLK k RTS RRЦ d PUTBLK k t PUTBLK ˄ PUTBLK fPB P˔ IGETSPC P$ ˤ ITAKE Ĺ V RSR R$PP(˴ ITAKE Ы( R Џ -1RSTЄP Ǐ PUUR U P8 P, P P
#P9 gP P P? P
z g 5
WRITE_BUFF0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
WRITE_BUFF P @
WRITE_BUFF P @ P| [ЬÏ Ь(4P4RQS 4TSUUQ P S SP P B Pk<8 VPUTBLK ի T P@4UTPՅ P B PkxTVFPL C $ SQUASH014.A 9 ! "[ACORNSQUASH.CODE.A]SQUASHDB.OBJ;9;62 " H PUTBLK ի PkP
\
DFILEXTEND Ы Ы Ftp PUTBLK T
|
WRITE_BUFF VPUTBLK PUTBLK
DFILEXTEND $CODE $PDATA $LOCAL CACSIZ BSBLK KBLO B TRKBUF LUN. DP SP( wP Pd P< P!/ # 0 IVLEN0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 IVLEN IVLEN ] P P [}PQPмPQռ RQRSSTDTT PQ SPP D
IVLEN G $CODE $PDATA $LOCAL P# 9P ?P#
G 1 PUTBLK0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
PUTBLK
PUTBLK8 P 0 0 P [Ь 0м8 SYS$QIOW ʏP Լ R PdмlH SYS$QIOW ˏPQ Լ R PϱˏRR ~
PUTBLK SYS$QIOW $CODE $PDATA $LOCAL LUN L17SIZ L16SIZ$ P BP MP= wP P 7 + 1 GETBLK0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
GETBLK
GETBLK8 P 1 1 P [Ь 0м8 SYS$QIOW ʏP Լ R PdмlH SYS$QIOW ˏPQ Լ R PϱˏRR `
GETBLK SYS$QIOW $CODE $PDATA $LOCAL LUN$ P BP MP= wP P 7 + 2 VPUTBLK0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 VPUTBLK VPUTBLK P P 0 0 P [Ь 0м4м8 SYS$QIOW ʏP Լ ˏPP R PdмhмlH SYS$QIOW ˏPQ Լ R PDZˏRR
VPUTBLK SYS$QIOW $CODE $PDATA $LOCAL LUN L17SIZ L16SIZ & P GP ^PQ P P 8 , 2 VGETBLK0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 VGETBLK VGETBLK D P 1 1 P [Ь 0м4м8 SYS$QIOW ʏP Լ R PdмhмlH SYS$QIOW ˏPQ Լ R PDZˏRR c
VGETBLK SYS$QIOW $CODE $PDATA $LOCAL LUN & P GP QPE P P 7 + 1 PUTIDX0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
PUTIDX
PUTIDX P 1 1 0 1 0 0 P [Ь$$VЦWW WXXPPYz XP{PPPPk ZY1 Y0YL( SYS$QIOW PRP2PPR P SdYˀ \ SYS$QIOW PRS RR RSBP` PS RѦ Ѧ Ѧ kRBP, n `1 ЦЦ X Цh hЦkЦ l loЦp psƈ X $PRtSЀ X Pބ@$R(d b˄PR>hV2fSSPV RPˇˋˏ˓,˗7˛B˟MˣX˧W˷ kWGP( h` P PP PY D Y WE YP Pː FILEXTEND RRVWV ˬ W ˤ SYS$QIOW VW Ы SYS$QIOW R Y0 SYS$QIOW P RHYd@ SYS$QIOW R P۱ P
PUTIDX SYS$QIOW FILEXTEND $CODE $PDATA $LOCAL JIDX DIBFC L17SIZ L16SIZ NOHSP LRCD +P ]P P P) P P P P) P P P +P 4P <P VP jP P 5P ;Pv @Pq xP P P= P P P
1 GETIDX0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
GETIDX
GETIDX P 1 1 P [Ь pԼ VަQ, n a, n tƈ PPRz P{PPPPS TR1 R R8 SYS$QIOW PUU WPRlH SYS$QIOW PUW UⱫU WRGP` PR WU 1 SCU( et t x Լ tlol Լ PS>tU2eTTPU SlmnolP Լ , Լ 7 Լ B Լ M Լ X Լ ռ 1 tlswp{qP`~PP Ðrppѫ Լ 1 ol lˀlxlol ll |lol llPޫShU TЃlool llPhƈ ƈ @ Լ ƈ PޫS$ TЃlol ll PԼ
GETIDX SYS$QIOW $CODE $PDATA $LOCAL JIDX DIBFC @ BMAP LRCD qP P PQ P P P P P P P +P EP P P P P P P PI P P P &P GP hP P P P> P6 P 3 LOGLATCH0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 LOGLATCH! PSQUASH_ARBSW T LNM$SYSTEM LOGLATCH TPP \
LIB$SYS_TRNLOG @ P T
t
LIB$SET_LOGICAL @ |
LIB$SET_LOGICAL @
LIB$SET_LOGICAL @ P P [Լ LIB$SYS_TRNLOG P < LIB$SET_LOGICAL
LOGLATCH LIB$SYS_TRNLOG LIB$SET_LOGICAL LIB$GET_FOREIGN ) $CODE $PDATA $LOCAL P
) 2 GETSTAT0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 GETSTAT GETSTAT m P P [ Џ @ k ACCBMAP s
GETSTAT ACCBMAP A $CODE $PDATA $LOCAL ZSTAT @ BMAP A 1 LXYAST0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
LXYAST
LXYAST P P [k GETSTAT SYS$QIO NEWAXX P r
LXYAST GETSTAT SYS$QIO NEWAXX + $CODE $PDATA l $LOCAL ( MBXJUNK + 1 NEWAXX0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
NEWAXX
NEWAXXk P ! LXXAST $ P [ k SYS$QIO f
NEWAXX LXXAST SYS$QIO $CODE $PDATA 4 $LOCAL ( MBXJUNK
D " $ SQUASH014.A 9 ! "[ACORNSQUASH.CODE.A]SQUASHDB.OBJ;9;62 >~ " Y 1 IMPCNT0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79
IMPCNT
IMPCNTJ P [Pԫ Q\ @@ Rb \P RQ\]
IMPCNT < $CODE $PDATA $LOCAL B TRKBUF CACSIZ P ,P 1P < 3 FLUSHLOG0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 FLUSHLOG FLUSHLOG P P [Ѽ B RS @@ TӤ dP P B PѼP PѼP FLUSHTHIS TRS q
FLUSHLOG FLUSHTHIS d $CODE $PDATA $LOCAL B TRKBUF CACSIZ + PP $P> 1P* EP NP XP
d 3 FLUSHTOP0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 FLUSHTOP FLUSHTOPK P P [ IMPCNT Pk FLUSHTHIS Z
FLUSHTOP IMPCNT FLUSHTHIS $CODE $PDATA $LOCAL P 4 FLUSHTHIS0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 FLUSHTHIS P @ FLUSHTHIS @P H@ H@ H@ $ ( $ 0 4 8 0 0 $ ( < < 0 0 0 < < P [ 4 PUTBLK k D PUTBLK P V@?@ 1 мWԫ@?@ ԫ T GETIDX ѫ Ы, n < @|R x WP@ lh QLZW_CMP PRR R x WP@ ˄ ˀ
LZH_ENCODE PRѫ > ի RR x WP@ ˘ ː MOVCH R < @ PǏ PXX
Ы|RPR=b P YiPB PX Xˠ IGETSPC P ˰ ITAKE ЫRSTS SRPP ITAKE Ы S1 , n ЫRSի1 IGETSPC P ITAKE ЫCRS1 RSЃ$ IGIVE R (
DFILEXTEND é,PPS RSTT T R$ VPUTBLK k T RT RPP$( PUTBLK k RTS RRЩ 8 PUTBLK k H PUTBLK X PUTBLK iPB Ph IGETSPC P x ITAKE ЫRSTS SRPP ˈ ITAKE Ы S Џ -1RSTЄP ¹ T ^ Ǐ PUUR U0xUZJh˜˘ PUTBLK k Jhˬ˨ PUTBLK UR SRSTի UiPB P$BG@ ˼˸ PUTBLK k BG@ PUTBLK R STԫ PUTIDX RޫSЃ$ IGIVE RЏ -1RSޫTЄP Ǐ PUUR U0xUZJh PUTBLK k Jh PUTBLK UR SWWG?@
FLUSHTHIS QLZW_CMP PUTBLK GETIDX
LZH_ENCODE MOVCH IGETSPC ITAKE IGIVE
DFILEXTEND VPUTBLK PUTIDX W $CODE $PDATA ( $LOCAL CACSIZ SMLM KBLO DIDW @ BZERO FLIL @ BMAP MAPCT B TRKBUF BSBLK ZSTAT JIDX NOHSP DIBFC LUN1 P :P \P ^P P P P P P P P rP= P Pa PF P P P -PR 7P@ <P OP0 [P qP }P P P P
P $P; 1P. MP rPO P P P? P. -P X L W 2 SAVMODE0122-Sep-1994 10:0722-Sep-1994 10:07 VAX FORTRAN V5.4-79 SAVMODE SAVMODE P м R
SAVMODE $CODE $PDATA $LOCAL MODSV 3 DECODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 R
DECODE decode_start
decode ( 4 HUF_DECODE_START DECODE_P DECODE_C
DECODE_START
< DECODE $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT DECODED P ^ HUF_DECODE_START
P< ^
U RSb. QТP@aCaPˏ PSSSPb DECODE_C PTeSPT PTC`SSSPTb DECODE_P PSPPˏ PbЬQТP@aCaPˏ PSSSPb 3 ENCODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 P ^ \լ
l< !~ MALLOC RbP(< !~bP< B~bP< ~bP< ~bP<~bP ^ Q R2R\L(L= R P2P\L=?P R2RPP\\@ = R R? @ P2P\L =pP< ^ SެUeQ2QRxPPR @ RB TQ2TP@QУ RУQ2TP@bT2TP@ae2TP| ^ R2QxPPQ @ QQU2UP@ T @ 2 QTA 2TP @UAA2 P@ | ^ Q T2TUE E2SСRCbPPEb2PPT@ С RCbPPEb2PPT@СRCbEb$E(E2
P$P@ PU2 2TxPPTP @ PPV2VP@ S @ 2 RSB 2SP @VBBD2R$RP@ PUnR2nTxPPTP @ PPU2UP@ S@ 2RSB 2SP@UBnBD ^ Sѣ$1 ף$2
RRȏ RRV2VRBX T R2V\LdV2V\LbX2XRB(RR$ ! U( RXV2X\LeX2X\Lb\\$ XT2TRB2T\LLT2T\LT 1 2TU2R RE1 2RcTBdR RRX2RRBdQQR2XޮPRW2TxWRRT @ TD U2URBУ TУR2U\LdU2U\LbUVRQR2Xn22nWxRRWR @ RR \2\RB UB 2TUD 2URB\DnDG$$V
UV
P2VRB(\\U2B\ \
2
\ \\
2\У$QQ\cPL`T2
\Q\L`R2U\Q\"Pdb 2V~ SPLIT ֣$TR2U\ѣ$\ѣ$ 1 2V\LVXdR2XޮWRU2RxU\\R @ RB Q2Q\L P R2Q\L`Q2Q\LbQVTd\2X \R22 QxR\Q\ @ \\U2U\L PL 2RPB 2P\LUB BA֣$12V\УULeT2RTBe2TRB У ULeT2RTBe2TRB2RXBLL ^ Q2\L2\LTС SLcR2T\RLc2R\TL2\LWLW 2W\LP``\\2WRСS2Bc\ \VV
2V\ \\VVTBU2U\LcP2P\\C2P\ \PP
2P\ \\PPTPT2U\ TLLU2U\LP2P\\U /P
2P\ \\PPTPT2UR T\2\\ \B2VR2WP@(\\RB \PnnU\T2nPxT\\P @ P@ Sn2S\LnС R P2S\LbS2S\L`nSP2PTDUС SDcR2U\RLc2R\UL2WSCR2R\PL RDͰC R2R\PLRD СRCbDbC C W ^ Rע @4< !~b\ l MEMMOVE S< ~b\ ! FREAD_CRC P DELETE_NODE INSERT_NODE P^ [ Rբ V
b< !~ MALLOC ScP(< !~cP< B~cP< ~cP< ~cP<~cP T2TP@(@= T S2SP@=?S T2TQQPPA = T T? @ S2SP@ =pS HUF_ENCODE_START U< !~bS FREAD_CRC P Ԣ$ INSERT_NODE Т SѢ$SS$S1 k1 MEMMOVE W FREAD_CRC V DELETE_NODE U INSERT_NODE T OUTPUT ZPТ$S
Xע @-< !~bP `g R
ENCODE allocate_memory l l
init_slide | child T < makechild X split insert_node delete_node get_next_match ]
encode H ѹ ᭯ GET_NEXT_MATCH DELETE_NODE INSERT_NODE SPLIT MAKECHILD CHILD
INIT_SLIDE MEMMOVE FREAD_CRC HUF_ENCODE_END HUF_ENCODE_START OUTPUT MALLOC
l
INIT_SLIDE
< CHILD
< | MAKECHILD
X $ SQUASH014.A 9 ! "[ACORNSQUASH.CODE.A]SQUASHDB.OBJ;9;62 " j | SPLIT
INSERT_NODE
DELETE_NODE
GET_NEXT_MATCH
ENCODE <
$CODE , $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT OUT_BUF_ADR NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN < ~bP !fP e dѢ$ Т $Ѣ$SS 2PP@ ~jvP2Q2XPPQQˏ Q~ S~jSDע @,< !~bP `gY< ~bP !fP e dSѢ$ Т $բ k1 HUF_ENCODE_END 0 HUFV1.0 1-APR-1994 18:21 VAX C V3.1-051 P< ^ RS>n0 \Pl\SЏ U USCSPU U\L\PU1 P\PLTdSPU@\PSPU@\S \l\ QP>. \Pl\
P|0 INIT_PUTBITS ^
SEND_BLOCK PUTBITS PUTBITS ^
W Uݬ GETBITS PXBݬ GETBITS PQRެTRd PBRRdS>H. PPQ`P STX1 PgS
RP\bR SU[1 GETBITS ZiQ
fwrite_crc init_getbits ` init_putbits - [ FILLBUF ZGETC GTSIZNOW ZPUTC ZGETC
< FILLBUF
| GETBITS
PUTBITS
< FREAD_CRC
FWRITE_CRC
| INIT_GETBITS
` INIT_PUTBITS s $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR4 DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN SIZNOW SUBBITBUF BITCOUNT ^P| ^ S U
TdecR88 ^
Y X ST> RbRTЬWWc 8RRRTPTD$P82PUT0T2 UV>U>TW>V>T@ Rì ZS7@hR P@gRxVVSɰYbJYY 1a 0 ZGPV1.0 1-APR-1994 18:23 VAX C V3.1-051 R
ZGP zcset L L zgetc / | zputc 8 gtsiznow 7
ZCSET
L ZGETC
| ZPUTC
GTSIZNOW $CODE 0A $DATA
UNPACKABLE OSIZ OUT_BUF_ADR P ^ Pޠ ЬRRЬ QQЬ`RQ ЬR @ Q ^ QաСRbTTSRסPSSP ^ PРQQ QRQb P P ^ \ЬP / ACLIC0 1-APR-1994 18:24 VAX MACRO V5.4-3, MACRO/OBJECT=OBJ$:ACLIC.OBJ SRC$:ACLIC.MAR ACLIC @
DSC$K_DTYPE_T SYS$BRKTHRUW SYS$EXIT
SYS$SNDOPR . ABS . P $ABS$ - P P P P P P P P P P P 1 CDEV_DATA P 3PIDQ&Q
DSC$K_DTYPE_T%Q C 3DeviceQ&Q Q( ( MQ u;@cbedf'(Hkkmmonpq225467Yx{{|=_~@ACBDD
"10#6%
Q Q t 3OPA0:Q&Q Q &
DSC$K_DTYPE_T%&
DSC$K_DTYPE_TB % Squash, Copyright 1994 Acorn Software
Qn CDEV_CODE P
LICMSG & R S T)UU[ZVWXVWWXXЏ! PP SYS$EXIT XU֞RpS|~ ecb SYS$BRKTHRUW R< ~b
SYS$SNDOPR P1
LICMSG0 CDEV_DATA1 CDEV_CODE 0 GETEFB0 1-APR-1994 18:24 VAX MACRO V5.4-3. MACRO/OBJECT=OBJ$:GETEFB.OBJ SRC$:GETEFB.MAR
GETEFB XAB$B_COD XAB$L_NXT . ABS . 1 . BLANK . P $ABS$ P P
GETEFB &I ԼЬR%Т$S XAB$B_COD XAB$L_NXTSУTTT
GETEFB . BLANK .1 2 APKCALL0111-Oct-1994 12:5411-Oct-1994 12:54 VAX FORTRAN V5.4-79 APKCALL ; PLNM$SYSTEM_TABLE SQUASH_CHECK_TYPE SQUASH-V1 AVTECH APKCALL Px t
SYS$TRNLNM @
SYS$TRNLNM @ P # 8 #
APK_CHECK_LICENSE @ - h p P [dfhޫ lprޫtޫ x|ԫԫ4
SYS$TRNLNM P ѫ ) 4 d6oN(8/we:Wowlc&e s+dcsT#aCfQa pByp)HdPZVBDQu=LR}Ҵ!f/@>[%#НQ+aD >Nx+
,.A[xZM&: .1ۄ_!<hJwUYR6 -robg{ӓcW"tI]@K+-!"t ߽ sO3va! @E2"r?u] S2$qU!F#He]KwZS$Ba`fzHUgzVWok3ƹ8Sg蘮L~5^"Z4QP ϗB\U
D`1foos^4)\a+
Jtwz1OT]gلo&˰S%f}F#8%M=
Z. 8x( )o, sgc|C8\j]0_cz HbkrpV- ( _J) } OI9 @F/ĭbձsǔ,Hw6_ٯ,n$|hjTϑ~E|R,z " AIk.٨f!Ym2&B$ޝOC;قcѤzc D2#{°3N.U5 S
.z >V/ Ebb3Rd@ ]s]}"!gǔaT}\# m,97o}8vUZG >v+#iϼ^ 1Ch]=1IxYڪ) ^z_UKh-Bb.LKߵB3WCJ #"HC
$8 5Vc b}T;n!E⼤2 ;%
9kQ%9{;wgvP*# s!9MΫ{q8w(LA*Ebܺly^3ޔ$R 4-{J=0S^1=WԭN/Q Y# jj{g=-p @^ X@|(0 ʮ%exm0X ʜ:ҵfqi .nEa `["*]64gzeš4RV`+'*1ѳ$ma,)黥\na t}N59xH X7u7`&OF)FVa| Q~-JCcSfowʜ$ C1H1fC,t4ZtS,i_ ).7 cqʏlF
v+ Il$ NX㮯Ú\iZJ(og>cdzk \ wfړ I6_]m@;7'ۧ²sUƸd1#ET?2úyx4b/'dN|efD&)'͢igi& Dє1:([?(&Ϩ{Aȭ [ycγ P'ot $u`U:uP.|ZS!\qnB.ߛ q:52].ych`
#-6%k7\RF#^XE2 #vpIM6=.c1yՆ$Dנ-4D=o*P?DUb7 0rB穣^IMRԤd6YC%'֍ [}n`|n|ڛ_v~\I{hʼ /X|'u 3?R=#
fl uv E0QVu-uI
d`GN|v
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RQ?qZS_b?G b*:zQ#@I>J-{S"?:=}7ӜH~lZŊY1 iŦݏquYR}네iԫY}b=hxC8[X)! N:1<]=sR>hSK$zU2zSߤ5:a`0SS;yô,d-u\D
z vΡs{V㟭5 psNKU6[#ou'!,̪xfq DLJ٩JԒW{ QXE
{$/5HDއEPM3j}S#SN:J|г21#ӱN fǢJ1to3Y83y۰n`- b@0WzBZ/ [:i~TcemH9vIǂ[fLT-b
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H]`"/&q/ w;2 H~ {{zMDLs їߞu4 c > z 1LE,S\?5DŽwiO9bh9iæ4{QT@U n`#32D %P}N>EVC.e3\`-6f] j/&% L2k@U^_29ȝwB=
dA9 Љ}Wr9+đ x CM! (
Qyz#Z\[ٛR(4Ԓ 8;25 la Ѡ|ɠO5 ]2ñ*q!SɱԷ6RxF136܉g h=: (%'yD/-;R?۸<93hD b pt+.kv/+ Drg{nm`zaICMSG l HA $ SQUASH014.A 9 ! %[ACORNSQUASH.CODE.A]SQUASHDB_RO.OBJ;9 { X " x1 x x1 ppp Rppբ xPC( ( PxPPPRK`QUaQ @ E[Z1` PQ1Q Q Q Q` qPQ
x QLZW_DCM &UUH P D QPH D P QԑPD ЬVV мWW @ Џ @ WW xWWЬ XXY} R<\ SRfZZ[RSXYvZZTXY SWSPì XYYì XYYPU\ U\ \ RR RSRfZZQRSZU0[Zя ZPT7,PY< 4JPT@hP~ я Z:< 4JPPXPPYnPP @ 4J@h< 4JZZhЎPPXZT XYZZTU[ 4EM Z @ 4E[ P< 4KPP 4EQ[1 * QLZW_CMP x QLZW_DCMe QLZW_PURE_DATA QLZW_COMMON_DATA` MYLIMS QLZW_CODE 1 FILOPN0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
FILOPN P ;
FILOPN lP X W X X
B
B LUN16 B \ d h LUN17 B P X [Ь$}PQ,
@ @ @ P ICACHE P < , n @
, n < PQ V @@ RԂPQ Q Q QB X IVLEN PWWd,ht LIB$INDEX P PW P,P, ,ݏ_IDXW^(W,nWYYX,Xn PQ^ݏ_LCKW^(W,nWYYX,Xn PQ^м B P PB B ˀ FOR$INQUIRE k ˔ FOR$INQUIRE k ˨ FOR$OPEN P FOR$OPEN P FOR$CLOSE
FOR$EXIT_W ռ 1 FOR$OPEN P1 L FOR$CLOSE T FOR$OPEN ˔ FOR$CLOSE ˜ GETBLK ի1 1 ռ м B P P P B B P P B P P Ѽ Џ PǏ P XYX WY g˰ˬ GETBLK ի WXY˼ FOR$OPEN P B P FOR$EXIT
FILOPN ICACHE LUN16 LUN17 IVLEN LIB$INDEX FOR$INQUIRE FOR$OPEN FOR$CLOSE
FOR$EXIT_W GETBLK FOR$EXIT PUTBLK $CODE $PDATA T $LOCAL JIDX CACSIZ SMLM NOHSP DIDW FLIL LUN ZSTAT DIBFC BSBLK @ BZERO @ BMAP KBLO MAPCT B TRKBUF ( MBXJUNK P P P P P1 P. P P
P P+ P
P P #P gP P, PH b
0 LUN160122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 LUN16 LUN16 PP P D D P [ЬЬ RP@PЏ `P@PO`P@P` 0, SYS$OPEN P QAQaQQ P QAQaQQ P R84 GETEFB k k Py
LUN16 SYS$OPEN GETEFB $CODE $PDATA D $LOCAL LUN L16SIZ ZP oP P P ( 0 LUN170122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 LUN17 LUN17 PP P D D P [ЬЬ RP@PЏ ~ $ SQUASH014.A 9 ! %[ACORNSQUASH.CODE.A]SQUASHDB_RO.OBJ;9 { " ! `P@PO`P@P` 0, SYS$OPEN P QAQaQQ P QAQaQQ P R84 GETEFB k k P{
LUN17 SYS$OPEN GETEFB $CODE $PDATA D $LOCAL DIBFC L17SIZ ZP qP P P ( < 1 MBXSET0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
MBXSET" PLNM$SYSTEM_TABLE SQXF
MBXSET @P
@ < @ 8 P
SYS$CRELNM @ H ! LXXAST $ P 8 [}MBXXINFO
SYS$CREMBX ʏP1 ԫD GETFRU FOR$WRITE_IF ݫ
FOR$IO_L_V
FOR$IO_END L LIB$SYS_TRNLOG ʏP kȰʞkԫԫԫd
SYS$CRELNM ʏP ˄ | SYS$QIO
MBXSET
SYS$CREMBX
SYS$CRELNM LXXAST GETFRU LIB$SYS_TRNLOG SYS$QIO $CODE $PDATA $LOCAL ( MBXJUNK
FOR$IO_END
FOR$IO_L_V FOR$WRITE_IF *P 3Py pP< P : . 1 FILCLS0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
FILCLS P @
FILCLS LP
$ H@ ( H@ H@ , 0 , 4 0 < @ D < <
, 0 , 4 H H < < $ < H H P
[^ 1 1 @ PUTBLK k P PUTBLK \R SRcd` PUTBLK k ctp PUTBLK S\R W 1 @@ ZӪ1 ԫjԫˀ GETIDX ѫ Ы, n < @xR x WP@ ˘ ˔ QLZW_CMP PRR R x WP@ ˰ ˬ
LZH_ENCODE P Rѫ > ի R XR x WP@ ˼ MOVCH R < @ PǏ P\\ Ы xRPRb P VfPB P\ IGETSPC P$ ѫ ITAKE RSR R$PP( ITAKE Ы( R1 , n Ы RSի 1 IGETSPC P$ ITAKE Ы$CRS1 RSЃ0 IGIVE R 4,
DFILEXTEND æ8PPS RSTT T R0@ VPUTBLK k T RT RPP0T PUTBLK k RTS RRЦ
d PUTBLK k t PUTBLK ˄ PUTBLK fPB P˔ IGETSPC P$ ù T ˤ ITAKE RSR R$PP(˴ ITAKE Ы( R Џ -1RSTЄP Ǐ PUUR U P! P P P" P &P OP TP cP }P PD P P .P` HPF ZP pP P PR P@ P P0 P P P P LP pP P PC P6 P PO #P eP PG P6 P q e 1 BUFDMO0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
BUFDMO P @
BUFDMO LP $ H@ ( H@ H@ , 0 , 4 0 < @ D < < , 0 , 4 H H < < $ < H H P
[^ @ PUTBLK k P PUTBLK
\R
SRcd` PUTBLK k ctp PUTBLK S\R W 1 @@ ZӪ1 ԫjԫˀ GETIDX ѫ Ы, n < @|R x WP@ ˘ ˰ QLZW_CMP PRR R x WP@ ˰ ˬ
LZH_ENCODE P Rѫ > ի R XR x WP@ ˼ MOVCH R < @ PǏ P\\
Ы |RPRb P VfPB P\ IGETSPC P$ ITAKE RSR R$PP( ITAKE Ы( R1 , n Ы RSի 1 IGETSPC P$ ITAKE Ы$CRS1 RSЃ0 IGIVE R 4,
DFILEXTEND æ8PPS RSTT T R0@ VPUTBLK k T RT RPP0T PUTBLK k RTS RRЦ d PUTBLK k t PUTBLK ˄ PUTBLK fPB P˔ IGETSPC P$ ˤ ITAKE Ĺ V RSR R$PP(˴ ITAKE Ы( R Џ -1RSTЄP Ǐ PUUR U P8 P, P P
#P9 gP P P? P
z g 5
WRITE_BUFF0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
WRITE_BUFF P @
WRITE_BUFF P @ P| [ЬÏ Ь(4P4RQS 4TSUUQ P S SP P B Pk<8 VPUTBLK ի T P@4UTPՅ P B PkxTVFPL PUTBLK ի PkP
\
DFILEXTEND Ы Ы Ftp PUTBLK T
|
WRITE_BUFF VPUTBLK PUTBLK
DFILEXTEND $CODE $PDATA $LOCAL CACSIZ BSBLK KBLO B TRKBUF LUN. DP SP( wP Pd P< P!/ # 0 IVLEN0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 IVLEN IVLEN ] P P [}PQPмPQռ RQRSSTDTT PQ SPP D
IVLEN G $CODE $PDATA $LOCAL P# 9P ?P#
G 1 PUTBLK0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
PUTBLK
PUTBLK7 P P [Ь q
PUTBLK $CODE $PDATA $LOCAL LUN L17SIZ L16SIZ 1 GETBLK0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
GETBLK
GETBLK8 P 1 1 P [Ь 0м8 SYS$QIOW ʏP Լ R PdмlH SYS$QIOW ˏPQ Լ R PϱˏRR `
GETBLK SYS$QIOW $CODE $PDATA $LOCAL LUN$ P BP MP= wP P 7 + 2 VPUTBLK0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 VPUTBLK VPUTBLK 7 P P [Ь t
VPUTBLK $CODE $PDATA $LOCAL LUN L17SIZ L16SIZ 2 VGETBLK0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 VGETBLK VGETBLK D P 1 1 P [Ь 0м4м8 SYS$QIOW ʏP Լ R PdмhмlH SYS$QIOW ˏPQ Լ R PDZˏRR c
VGETBLK SYS$QIOW $CODE $PDATA $LOCAL LUN & P GP QPE P P 7 + 1 PUTIDX0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
PUTIDX
PUTIDX9 P P [Ь
PUTIDX FILEXTEND $CODE $PDATA $LOCAL JIDX DIBFC L17SIZ L16SIZ NOHSP LRCD 1 GETIDX0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
GETIDX
GETIDX P 1 1 P [Ь pԼ VަQ, n a, n tƈ PPRz P{PPPPS TR1 R R8 SYS$QIOW PUU WPRlH SYS$QIOW PUW UⱫU WRGP` PR WU 1 SCU( et t x Լ tlol Լ PS>tU2eTTPU SlmnolP Լ , Լ 7 Լ B Լ M Լ X Լ ռ 1 tlswp{qP`~PP Ðrppѫ Լ 1 ol lˀlxlol ll |lol llPޫShU TЃlool llPhƈ ƈ @ Լ ƈ PޫS$ TЃlol ll PԼ
GETIDX SYS$QIOW $CODE $PDATA $LOCAL JIDX DIBFC @ BMAP LRCD qP P PQ P P P P P P P +P EP P P P P P P PI P P P &P GP hP P P P> P6 P 3 LOGLATCH0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 LOGLATCH! PSQUASH_ARBSW T LNM$SYSTEM LOGLATCH TPP \
LIB$SYS_TRNLOG @ P T
t
LIB$SET_LOGICAL @ |
LIB$SET_LOGICAL @
LIB$SET_LOGICAL @ P P [Լ LIB$SYS_TRNLOG P < LIB$SET_LOGICAL
LOGLATCH LIB$SYS_TRNLOG LIB$SET_LOGICAL LIB$GET_FOREIGN ) $CODE $PDATA $LOCAL P
) 2 GETSTAT0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 GETSTAT GETSTAT m P P [ Џ @ k ACCBMAP s
GETSTAT ACCBMAP A $CODE $PDATA $LOCAL ZSTAT @ BMAP A 1 LXYAST0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
LXYAST
LXYAST P P [k GETSTAT SYS$QIO NEWAXX P r
LXYAST GETSTAT SYS$QIO NEWAXX + $CODE $PDATA l $LOCAL ( MBXJUNK + 1 NEWAXX0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
NEWAXX
NEWAXXk P ! LXXAST $ P [ k SYS$QIO f
NEWAXX LXXAST SYS$QIO $CODE $PDATA 4 $LOCAL ( MBXJUNK
1 IMPCNT0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79
IMPCNT
IMPCNTJ P [Pԫ Q\ @@ Rb \P RQ\]
IMPCNT < $CODE $PDATA $LOCAL B TRKBUF CACSIZ P ,P 1P < 3 FLUSHLOG0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 FLUSHLOG FLUSHLOG
P q
FLUSHLOG FLUSHTHIS $CODE $PDATA $LOCAL B TRKBUF CACSIZ 3 FLUSHTOP0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 FLUSHTOP FLUSHTOP
P A
FLUSHTOP $CODE $PDATA $LOCAL 4 FLUSHTHIS0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 FLUSHTHIS P @ FLUSHTHIS P [
FLUSHTHIS PUTBLK GETIDX
LZH_ENCODE MOVCH IGETSPC ITAKE IGIVE
DFILEXTEND VPUTBLK PUTIDX
$CODE $PDATA $LOCAL CACSIZ SMLM KBLO DIDW @ BZERO FLIL @ BMAP MAPCT B TRKBUF BSBLK ZSTAT JIDX NOHSP DIBFC LUN U
2 $ SQUASH014.A 9 ! %[ACORNSQUASH.CODE.A]SQUASHDB_RO.OBJ;91 { " T 2 SAVMODE0122-Sep-1994 10:0922-Sep-1994 10:09 VAX FORTRAN V5.4-79 SAVMODE SAVMODE P м R
SAVMODE $CODE $PDATA $LOCAL MODSV 3 DECODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 R
DECODE decode_start
decode ( 4 HUF_DECODE_START DECODE_P DECODE_C
DECODE_START
< DECODE $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT DECODED P ^ HUF_DECODE_START
P< ^
U RSb. QТP@aCaPˏ PSSSPb DECODE_C PTeSPT PTC`SSSPTb DECODE_P PSPPˏ PbЬQТP@aCaPˏ PSSSPb 3 ENCODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 P ^ \լ
l< !~ MALLOC RbP(< !~bP< B~bP< ~bP< ~bP<~bP ^ Q R2R\L(L= R P2P\L=?P R2RPP\\@ = R R? @ P2P\L =pP< ^ SެUeQ2QRxPPR @ RB TQ2TP@QУ RУQ2TP@bT2TP@ae2TP| ^ R2QxPPQ @ QQU2UP@ T @ 2 QTA 2TP @UAA2 P@ | ^ Q T2TUE E2SСRCbPPEb2PPT@ С RCbPPEb2PPT@СRCbEb$E(E2
P$P@ PU2 2TxPPTP @ PPV2VP@ S @ 2 RSB 2SP @VBBD2R$RP@ PUnR2nTxPPTP @ PPU2UP@ S@ 2RSB 2SP@UBnBD ^ Sѣ$1 ף$2
RRȏ RRV2VRBX T R2V\LdV2V\LbX2XRB(RR$ ! U( RXV2X\LeX2X\Lb\\$ XT2TRB2T\LLT2T\LT 1 2TU2R RE1 2RcTBdR RRX2RRBdQQR2XޮPRW2TxWRRT @ TD U2URBУ TУR2U\LdU2U\LbUVRQR2Xn22nWxRRWR @ RR \2\RB UB 2TUD 2URB\DnDG$$V
UV
P2VRB(\\U2B\ \
2
\ \\
2\У$QQ\cPL`T2
\Q\L`R2U\Q\"Pdb 2V~ SPLIT ֣$TR2U\ѣ$\ѣ$ 1 2V\LVXdR2XޮWRU2RxU\\R @ RB Q2Q\L P R2Q\L`Q2Q\LbQVTd\2X \R22 QxR\Q\ @ \\U2U\L PL 2RPB 2P\LUB BA֣$12V\УULeT2RTBe2TRB У ULeT2RTBe2TRB2RXBLL ^ Q2\L2\LTС SLcR2T\RLc2R\TL2\LWLW 2W\LP``\\2WRСS2Bc\ \VV
2V\ \\VVTBU2U\LcP2P\\C2P\ \PP
2P\ \\PPTPT2U\ TLLU2U\LP2P\\U /P
2P\ \\PPTPT2UR T\2\\ \B2VR2WP@(\\RB \PnnU\T2nPxT\\P @ P@ Sn2S\LnС R P2S\LbS2S\L`nSP2PTDUС SDcR2U\RLc2R\UL2WSCR2R\PL RDͰC R2R\PLRD СRCbDbC C W ^ Rע @4< !~b\ l MEMMOVE S< ~b\ ! FREAD_CRC P DELETE_NODE INSERT_NODE P^ [ Rբ V
b< !~ MALLOC ScP(< !~cP< B~cP< ~cP< ~cP<~cP T2TP@(@= T S2SP@=?S T2TQQPPA = T T? @ S2SP@ =pS HUF_ENCODE_START U< !~bS FREAD_CRC P Ԣ$ INSERT_NODE Т SѢ$SS$S1 k1 MEMMOVE W FREAD_CRC V DELETE_NODE U INSERT_NODE T OUTPUT ZPТ$S
Xע @-< !~bP `g R
ENCODE allocate_memory l l
init_slide | child T < makechild X split insert_node delete_node get_next_match ]
encode H ѹ ᭯ GET_NEXT_MATCH DELETE_NODE INSERT_NODE SPLIT MAKECHILD CHILD
INIT_SLIDE MEMMOVE FREAD_CRC HUF_ENCODE_END HUF_ENCODE_START OUTPUT MALLOC
l
INIT_SLIDE
< CHILD
< | MAKECHILD
| SPLIT
INSERT_NODE
DELETE_NODE
GET_NEXT_MATCH
ENCODE <
$CODE , $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT OUT_BUF_ADR NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN < ~bP !fP e dѢ$ Т $Ѣ$SS 2PP@ ~jvP2Q2XPPQQˏ Q~ S~jSDע @,< !~bP `gY< ~bP !fP e dSѢ$ Т $բ k1 HUF_ENCODE_END 0 HUFV1.0 1-APR-1994 18:21 VAX C V3.1-051 P< ^ RS>n0 \Pl\SЏ U USCSPU U\L\PU1 P\PLTdSPU@\PSPU@\S \l\ QP>. \Pl\
P|0 INIT_PUTBITS ^
SEND_BLOCK PUTBITS PUTBITS ^
W Uݬ GETBITS PXBݬ GETBITS PQRެTRd PBRRdS>H. PPQ`P STX1 PgS
RP\bR SU[1 GETBITS ZiQ
fwrite_crc init_getbits ` init_putbits - [ FILLBUF ZGETC GTSIZNOW ZPUTC ZGETC
< FILLBUF
| GETBITS
PUTBITS
< FREAD_CRC
FWRITE_CRC
| INIT_GETBITS
` INIT_PUTBITS s $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR4 DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN SIZNOW SUBBITBUF BITCOUNT ^P| ^ S U
TdecR88 ^
Y X ST> RbRTЬWWc 8RRRTPTD$P82PUT0T2 UV>U>TW>V>T@ Rì ZS7@hR P@gRxVVSɰYbJYY 1a 0 ZGPV1.0 1-APR-1994 18:23 VAX C V3.1-051 R
ZGP zcset L L zgetc / | zputc 8 gtsiznow 7
ZCSET
L ZGETC
| ZPUTC
GTSIZNOW $CODE 0A $DATA
UNPACKABLE OSIZ OUT_BUF_ADR P ^ Pޠ ЬRRЬ QQЬ`RQ ЬR @ Q ^ QաСRbTTSRסPSSP ^ PРQQ QRQb P P ^ \ЬP / ACLIC019-MAR-1994 09:29 VAX MACRO V5.4-3? MACRO/OBJ=OBJ$:ACLIC_RO.OBJ SRC$:THISUSER.MAR+SRC$:ACLICX.MAR ACLIC @
DSC$K_DTYPE_T SYS$BRKTHRUW SYS$EXIT
SYS$SNDOPR . ABS . P $ABS$ - P P P P P P P P P P P CDEV_DATA + $ SQUASH014.A 9 ! %[ACORNSQUASH.CODE.A]SQUASHDB_RO.OBJ;91 {
v P 3PIDQ&Q
DSC$K_DTYPE_T%Q C 3DeviceQ&Q Q( ( MQ u;@cbedfGihk+,Looqqsrtu6698:;]|@cBDEGFHH
@bbdegg(ik+Mmoop1S34Tvvxy{{|=>^@@BCEEFgihk mLO
"!0!&54':)*+>=BL 7 #Ο\ 8 q 9 G H J 4 ACSQV01-00216-MAY-1994 14:31 VAX MACRO V5.4-36 MACRO/OBJECT=OBJ$:ACNSQUV_RO.OBJ SRC$:ACNSQUV_RO.MAR! - AcornSquash host program main ACSQJ BUFRD
CLI$GET_VALUE CLI$PRESENT CLI$_PRESENT
CTL$GL_PCB
DSC$K_DTYPE_T FILCLS FILOPN
IOC$SEARCHDEV LICMSG OTS$CVT_TU_L SCH$IOLOCKW SCH$IOUNLOCK
SYS$ASSIGN
SYS$CANEXH
SYS$CMKRNL
SYS$CREMBX
SYS$DASSGN
SYS$DCLEXH
SYS$GETDVI SYS$GETDVIW SYS$QIOW . ABS . P $ABS$ e P P P P P P P P P P P P P P P P P P P P P P P P P d FDHOSTD_DATA P 3SYS$DISKQ&Q ,P,P,P,P,P,PPQN Q Q # Q $RMSNAM PFD0.DSKwPQ Q PFDCONT.DSKaPQQ
Q |PDQB Q Q Q , Q Q P ,Q* Q Q$ QP Q Q( ( DQ ( Dl t Q( ( Q ( Q
DSC$K_DTYPE_T%Q Q
DSC$K_DTYPE_T% Q 0 3CLEARQ&Q = 3KEYQ&Q H 3UNITQ&Q
T 3FNAMQ&Q
` 3FENCEQ&Q m 3SIZEQ&Q
y 3UNSAFEQ&Q 3INITQ&Q
3SMALLQ&Q 3CACHEQ&Q Q
DSC$K_DTYPE_T%Q d Q Q I l r FDHOSTD_CODE P
ACSQ &D
CLI$GET_VALUE P1; LICMSG u CLI$PRESENT P CLI$_PRESENT CLI$PRESENT P CLI$_PRESENT CLI$PRESENT P CLI$_PRESENT, CLI$PRESENT P CLI$_PRESENT 1P
CLI$GET_VALUE P1Џ@ CLI$PRESENT P CLI$_PRESENTY
CLI$GET_VALUE P1J OTS$CVT_TU_L Џ@ Џ\ CLI$PRESENT P CLI$_PRESENTX\
CLI$GET_VALUE P1 OTS$CVT_TU_L P1 i CLI$PRESENT P CLI$_PRESENT<i
CLI$GET_VALUE P1\ OTS$CVT_TU_L P1? Џ H D FILOPN H PP1 D @ @ ?@ @ H |~ x< ~ SYS$GETDVIW |~ l
SYS$ASSIGN P |~
SYS$ASSIGN P1k|~ x < ~
SYS$GETDVI P
Џ P1@X |~ ݏ= ݏ@ $
SYS$CREMBX P1 |~ <$~
SYS$GETDVI P1
SYS$DCLEXH X
SYS$CMKRNL 3@ 3( 3 T|~|~T |~< ~< ~ SYS$QIOW P1l|~|~|~K`QUaQ @ E[Z1` PQ1Q Q Q Q` qPQ
x QLZW_DCM &UUH P D QPH D P QԑPD ЬVV мWW @ Џ @ WW xWWЬ XXY} R<\ SRfZZ[RSXYvZZTXY SWSPì XYYì XYYPU\ U\ \ RR RSRfZZQRSZU0[Zя ZPT7,PY< 4JPT@hP~ я Z:< 4JPPXPPYnPP @ 4J@h< 4JZZhЎPPXZT XYZZTU[ 4EM Z @ 4E[ P< 4KPP 4EQ[1 * QLZW_CMP x QLZW_DCMe QLZW_PURE_DATA QLZW_COMMON_DATA` MYLIMS QLZW_CODE 1 FILOPN0129-Jun-1994 11:1929-Jun-1994 11:19 VAX FORTRAN V5.4-79
FILOPN P ;
FILOPN @P T T B T LUN16 B ( , \ B \ LUN17 B T
B
8 T LUN16 B 0 0 \
B \
B \ LUN17
B P [Ь$0}PQ8 T ICACHE P < , n < PQ @@ RԂPQ Q Q Q B \ IVLEN PXXh8lx LIB$INDEX P PX P,P8 8ݏ_IDXX^(X8nXZZY,Yn PQ^м B P P B B Y Zռ 1 W˄ FOR$OPEN P1 FOR$OPEN GETBLK k1 i1 iռ Щм B P P P B B P P B P P Ѽ Џ PǏ PjjRSR TSd GETBLK ի TRS FOR$OPEN P ` FOR$OPEN Щ
Щ
P B P
P P Ѽ Џ PǏ PjjXWX VfS, n c VXWм м j
V f W W X WB fWB WW fYB YWˠ FOR$OPEN P1 FOR$OPEN ( PUTBLK k FOR$WRITE_DU ߫D FOR$IO_X_SE
FOR$IO_END 8 FOR$RAB PD@ SYS$FLUSH H PUTBLK jWYj ZYj\X PUTBLK k ݫ FOR$WRITE_DU jd` FOR$IO_X_SE
FOR$IO_END h FOR$RAB Ptp SYS$FLUSH j|x PUTBLK ZWY<YZZfWB W W FOR$WRITE_DU ߫D FOR$IO_X_SE
FOR$IO_END YZˈ FOR$RAB P˔ː SYS$FLUSH fPfPB P˘ FOR$OPEN P FOR$CLOSE FOR$OPEN P FOR$OPEN
FILOPN ICACHE SYS$FLUSH FOR$RAB LUN16 LUN17 IVLEN LIB$INDEX FOR$OPEN GETBLK PUTBLK FOR$CLOSE $CODE
$PDATA $LOCAL JIDX CACSIZ SMLM LUN DIBFC BSBLK BMAP KBLO MAPCT B TRKBUF
FOR$IO_END FOR$IO_X_SE FOR$WRITE_DU UP iP P P ,P BP [P bP lP P P* PP P9 WP zP Pf +P? .P tPt PK P# P ZP! oP 7
0 LUN160129-Jun-1994 11:1929-Jun-1994 11:19 VAX FORTRAN V5.4-79 LUN16 LUN16 PP P D D P [ЬЬP@PЏ `P@PB`P@P`,( SYS$OPEN P P@P`PP P_
LUN16 SYS$OPEN g $CODE $PDATA 4 $LOCAL LUN PP! ? g 0 LUN170129-Jun-1994 11:1929-Jun-1994 11:19 VAX FORTRAN V5.4-79 LUN17 LUN17 PP P D D P [ЬЬP@PЏ `P@PB`P@P`,( SYS$OPEN P P@P`PP Pa
LUN17 SYS$OPEN g $CODE $PDATA 4 $LOCAL DIBFC PP! @ g 1 FILCLS0129-Jun-1994 11:1929-Jun-1994 11:19 VAX FORTRAN V5.4-79
FILCLS
FILCLSI P P [k FOR$CLOSE FOR$CLOSE
FILCLS FOR$CLOSE $CODE $PDATA $LOCAL CACSIZ KBLO SMLM BMAP MAPCT B TRKBUF BSBLK JIDX DIBFC < 1 BUFDMO0129-Jun-1994 11:1929-Jun-1994 11:19 VAX FORTRAN V5.4-79
BUFDMO
BUFDMO P [
BUFDMO
$CODE $PDATA $LOCAL CACSIZ SMLM KBLO BMAP MAPCT B TRKBUF BSBLK JIDX DIBFC <
0 BUFRD0129-Jun-1994 11:1929-Jun-1994 11:19 VAX FORTRAN V5.4-79 BUFRD P @ BUFRD pK P @ $K K 0K
H@ 4K
H@
H@ 8K tT2dUUPT SlmnolP Լ , Լ 7 Լ B Լ M Լ X Լ ռ 1 tlrwpˀ{qppѫ Լ 1 ol llxlol ll |lol llPޫShT UЃlool llP"Ph@PޫS$ TЃlol ll PԼ
GETIDX SYS$QIOW $CODE $PDATA ( $LOCAL JIDX DIBFC BMAP LRCD
FOR$IO_END FOR$IO_X_SE FOR$READ_DU qP P PP P P0 P P P P P *P EP P P P P P P P P P
P +P LP P P 3 DECODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 R
DECODE decode_start
decode ( 4 HUF_DECODE_START DECODE_P DECODE_C
DECODE_START
< DECODE $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT DECODED P ^ HUF_DECODE_START
P< ^
U RSb. QТP@aCaPˏ PSSSPb DECODE_C PTeSPT PTC`SSSPTb DECODE_P PSPPˏ PbЬQТP@aCaPˏ PSSSPb 3 ENCODEV1.0 1-APR-1994 18:20 VAX C V3.1-051 P ^ \լ
l< !~ MALLOC RbP(< !~bP< B~bP< ~bP< ~bP<~bP ^ Q R2R\L(L= R P2P\L=?P R2RPP\\@ = R R? @ P2P\L =pP< ^ SެUeQ2QRxPPR @ RB TQ2TP@QУ RУQ2TP@bT2TP@ae2TP| ^ R2QxPPQ @ QQU2UP@ T @ 2 QTA 2TP @UAA2 P@ | ^ Q T2TUE E2SСRCbPPEb2PPT@ С RCbPPEb2PPT@СRCbEb$E(E2
P$P@ PU2 2TxPPTP @ PPV2VP@ S @ 2 RSB 2SP @VBBD2R$RP@ PUnR2nTxPPTP @ PPU2UP@ S@ 2RSB 2SP@UBnBD ^ Sѣ$1 ף$2
RRȏ RRV2VRBX T R2V\LdV2V\LbX2XRB(RR$ ! U( RXV2X\LeX2X\Lb\\$ XT2TRB2T\LLT2T\LT 1 2TU2R RE1 2RcTBdR RRX2RRBdQQR2XޮPRW2TxWRRT @ TD U2URBУ TУR2U\LdU2U\LbUVRQR2Xn22nWxRRWR @ RR \2\RB UB 2TUD 2URB\DnDG$$V
UV
P2VRB(\\U2B\ \
2
\ \\
2\У$QQ\cPL`T2
\Q\L`R2U\Q\"Pdb 2V~ SPLIT ֣$TR2U\ѣ$\ѣ$ 1 2V\LVXdR2XޮWRU2RxU\\R @ RB Q2Q\L P R2Q\L`Q2Q\LbQVTd\2X \R22 QxR\Q\ @ \\U2U\L PL 2RPB 2P\LUB BA֣$12V\УULeT2RTBe2TRB У ULeT2RTBe2TRB2RXBLL ^ Q2\L2\LTС SLcR2T\RLc2R\TL2\LWL #= $ SQUASH014.A 9 ! %[ACORNSQUASH.CODE.A]SQUASHD_RO.OBJ;121 i DJ " ? W 2W\LP``\\2WRСS2Bc\ \VV
2V\ \\VVTBU2U\LcP2P\\C2P\ \PP
2P\ \\PPTPT2U\ TLLU2U\LP2P\\U /P
2P\ \\PPTPT2UR T\2\\ \B2VR2WP@(\\RB \PnnU\T2nPxT\\P @ P@ Sn2S\LnС R P2S\LbS2S\L`nSP2PTDUС SDcR2U\RLc2R\UL2WSCR2R\PL RDͰC R2R\PLRD СRCbDbC C W ^ Rע @4< !~b\ l MEMMOVE S< ~b\ ! FREAD_CRC P DELETE_NODE INSERT_NODE P^ [ Rբ V
b< !~ MALLOC ScP(< !~cP< B~cP< ~cP< ~cP<~cP T2TP@(@= T S2SP@=?S T2TQQPPA = T T? @ S2SP@ =pS HUF_ENCODE_START U< !~bS FREAD_CRC P Ԣ$ INSERT_NODE Т SѢ$SS$S1 k1 MEMMOVE W FREAD_CRC V DELETE_NODE U INSERT_NODE T OUTPUT ZPТ$S
Xע @-< !~bP `g R
ENCODE allocate_memory l l
init_slide | child T < makechild X split insert_node delete_node get_next_match ]
encode H ѹ ᭯ GET_NEXT_MATCH DELETE_NODE INSERT_NODE SPLIT MAKECHILD CHILD
INIT_SLIDE MEMMOVE FREAD_CRC HUF_ENCODE_END HUF_ENCODE_START OUTPUT MALLOC
l
INIT_SLIDE
< CHILD
< | MAKECHILD
| SPLIT
INSERT_NODE
DELETE_NODE
GET_NEXT_MATCH
ENCODE <
$CODE , $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT OUT_BUF_ADR NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN < ~bP !fP e dѢ$ Т $Ѣ$SS 2PP@ ~jvP2Q2XPPQQˏ Q~ S~jSDע @,< !~bP `gY< ~bP !fP e dSѢ$ Т $բ k1 HUF_ENCODE_END 0 HUFV1.0 1-APR-1994 18:21 VAX C V3.1-051 P< ^ RS>n0 \Pl\SЏ U USCSPU U\L\PU1 P\PLTdSPU@\PSPU@\S \l\ QP>. \Pl\
P|0 INIT_PUTBITS ^
SEND_BLOCK PUTBITS PUTBITS ^
W Uݬ GETBITS PXBݬ GETBITS PQRެTRd PBRRdS>H. PPQ`P STX1 PgS
RP\bR SU[1 GETBITS ZiQ
fwrite_crc init_getbits ` init_putbits - [ FILLBUF ZGETC GTSIZNOW ZPUTC ZGETC
< FILLBUF
| GETBITS
PUTBITS
< FREAD_CRC
FWRITE_CRC
| INIT_GETBITS
` IN S $ SQUASH014.A 9 ! %[ACORNSQUASH.CODE.A]SQUASHD_RO.OBJ;121 i P IT_PUTBITS s $CODE $DATA STDIN STDOUT STDERR
UNPACKABLE ORIGSIZE COMPSIZE ARCFILE
LZH_INFILE BITBUF LEFT RIGHT NO_MATCH FAILED_CONSISTENCY INVALID_HEADER INTERNAL_ERROR4 DISK_FULL
BAD_DIRECTORY NO_MEMORY TOO_MANY_FILES PACKFIRST GARBLED START_OFS
WRONG_VERSION CANT_PROCESS OPTION_IGNORED
INV_OPTION BAD_CRC COULD_NOT_OPEN SIZNOW SUBBITBUF BITCOUNT ^P| ^ S U
TdecR88 ^
Y X ST> RbRTЬWWc 8RRRTPTD$P82PUT0T2 UV>U>TW>V>T@ Rì ZS7@hR P@gRxVVSɰYbJYY 1a 0 ZGPV1.0 1-APR-1994 18:23 VAX C V3.1-051 R
ZGP zcset L L zgetc / | zputc 8 gtsiznow 7
ZCSET
L ZGETC
| ZPUTC
GTSIZNOW $CODE 0A $DATA
UNPACKABLE OSIZ OUT_BUF_ADR P ^ Pޠ ЬRRЬ QQЬ`RQ ЬR @ Q ^ QաСRbTTSRסPSSP ^ PРQQ QRQb P P ^ \ЬP / ACLIC019-MAR-1994 09:29 VAX MACRO V5.4-3? MACRO/OBJ=OBJ$:ACLIC_RO.OBJ SRC$:THISUSER.MAR+SRC$:ACLICX.MAR ACLIC @
DSC$K_DTYPE_T SYS$BRKTHRUW SYS$EXIT
SYS$SNDOPR . ABS . P $ABS$ - P P P P P P P P P P P CDEV_DATA P 3PIDQ&Q
DSC$K_DTYPE_T%Q C 3DeviceQ&Q Q( ( MQ u;@cbedfGihk+,Looqqsrtu6698:;]|@cBDEGFHH
@bbdegg(ik+Mmoop1S34Tvvxy{{|=>^@@BCEEFgihk mLO
"!0!&54':)*+>= . 3 / 4 3 3 - ! 0 1 2 3 K P W O 4 5 6 HtbGS 7 Ο\ 8 -Uq 9 G H J 5 $ XXX = f$verify(0+(f$trnlnm("SQUASH_DEBUG").NES."")) ! $!SQUASH compression host startup $!Copyright (c) 1994 By $!Acorn Software $!All rights reserved. $ ask:= inquire $ delete := delete $ emit:= write sys$output $ thisnode=f$getsyi("nodename") $dmnpri = 4 $ if thisnode .eqs. "" $ thenH $ emit "%SQUASH-F-NOSCSNODE, SCSNODE SYSGEN parameter must be entered."D $ emit " SQUASH cannot run unless SCSnode is set. Please set it in"F $ emit " SYSGEN and restart after it is set. You will need to reboot"J $ emit " after writing a value to SCSNODE for the change to take effect." $ exit $ endif $ sysgen := $sysgen 7 $if f$getsyi("CPU") .gt. 127 then sysgen :== $sysman io $sysman:==$sysman $ ovrb=0D $oldprv=f$setprv("cmkrnl,sysprv,log_io,phy_io,tmpmbx,volpro,detach")E $tprv=f$privilege("cmkrnl,sysprv,log_io,phy_io,tmpmbx,volpro,detach") $ if .not. (tprv) $ then $ exit 36 ! SS$_NOPRIV $ endif $emit "[H[J" $on error then exit 4 $ if (f$search("sys$system:FRdriver.exe") .eqs. "") $ then F $ write sys$output "%SQUASH-E-NODRIVER, FRDRIVER not installed." $ exit 4 $ endif 2 $!! See if the driver is loaded by checking unit 0 $ if f$device("*FRA0*") .eqs. "" $ THEN ; $ WRITE SYS$OUTPUT "%SQUASH-I-LOADING, Loading FRA0." P $if f$getsyi("CPU") .le. 127 then sysgen connect FRA0:/noadapter/driver=frdriverb $if f$getsyi("CPU") .gt. 127 then sysman io connect FRA0:/noadapter/driver=sys$system:frdriver.exe& $ if f$device("*FRA0*") .eqs. ""
$ THEN I $ write sys$output "%SQUASH-E-NOLOAD, Can't load FRDRIVER." $ exit 4
$ ENDIF $ ENDIF $mordsk: $ndsk=0 $goto nxtfq $faktrymore: $ndsk=ndsk+1 $nxtfq: $ddnm="FRA"+f$string(ndsk)+":" $dvc=ddnm $ddnm2="*"+ddnm+"*" $if f$device(ddnm2) .nes. "" $ then4 $! Allow negative counts that happen now & then too.O $ if (f$getdvi(ddnm,"REFCNT") .ne. 0 .and. f$getdvi(ddnm,"REFCNT") .lt. 60000) $ then $ ndsk=ndsk+1 ( $ if ndsk .lt. 128 then goto nxtfq $ endif F $!If the device is online, that means a Squash daemon is running on it $!so we'll skip it too. $tstt=f$getdvi(dvc,"sts") $ionline=16 $oln = ionline .and. tstt $if oln .eq. 0 then goto olok $ndsk=ndsk+1! $if ndsk .lt. 128 then goto nxtfq $olok: $endif !disk exists $getSquashDisk: $ bddnm=ddnm$ $ ddnm = f$getdvi(ddnm,"fulldevnam") $ovrb=0 $ccmd=" " H $ccmd="read/prompt=""Please enter the device name for the Squash disk [" $ccmd=ccmd+bddnm- $ccmd=ccmd+"]: ""/end=byebye sys$command dvc" $ccmd $if (dvc.eqs."")then dvc = ddnm $zdvc=" " K $if f$extract(0,2,f$edit(dvc,"upcase,collapse")) .eqs. "FR" then goto nfrok " $if dvc .eqs. ddnm then goto nfrokS $if f$locate("FR",f$edit(dvc,"UPCASE,COLLAPSE")) .lt. f$length(dvc) then goto nfrok = $if (f$getdvi(dvc,"exists")) then zdvc=f$getdvi(dvc,"devnam") ? $if f$extract(0,1,zdvc) .eqs. "_" then zdvc=f$extract(1,2,zdvc) L $if f$extract(0,2,f$edit(zdvc,"UPCASE,COLLAPSE")) .EQS. "FR" THEN goto nfrokA $ write sys$output "%SQUASH-E-Device name does not start with FR" $ goto getSquashDisk $nfrok:
$ bdvc=dvcz $!$ if f$getsyi("CPU") .lt. 128 then if .not. (f$getdvi(bddnm,"EXISTS")) THEN sysgen connect 'bddnm'/noada/driver=frdriver $!$ if f$getsyi("CPU") .ge. 128 $!$ then \ $!$ if .not. (f$getdvi(bddnm,"EXISTS")) THEN sysman io connect 'bddnm'/noada/driver=frdriver $!$ endif $!if(f$getdvi(dvc,"EXISTS")) $ zzdvc="*"+dvc - ":" +"*" $if f$device(zzdvc) .nes. "" $ THEN # $ bdvc=f$getdvi(dvc,"devnam") - "_" ( $ dvc = f$getdvi(dvc,"fulldevnam") $ ddnm = dvc $ GOTO DVCEXIST $ endif 3 $ WRITE SYS$OUTPUT "%SQUASH-I-LOAD, Loading ''dvc'" M $if f$getsyi("CPU") .le. 127 then sysgen connect 'bdvc'/noada/driver=frdriver P $if f$getsyi("CPU") .gt. 127 then sysman io connect 'bdvc'/noada/driver=frdriver
$ bdvc=dvc $! if(f$getdvi(dvc,"EXISTS")) $ zzdvc="*"+dvc - ":" +"*" $ if f$device(zzdvc) .nes. "" $ THEN # $ bdvc=f$getdvi(dvc,"devnam") - "_" ( $ dvc = f$getdvi(dvc,"fulldevnam") $ ddnm = dvc $ GOTO DVCEXIST $ ENDIF 7 $write sys$output "%SQUASH-F-NOLOAD, Can't load ''dvc'" $exit 4
$dvcexist:Z $if(f$getdvi(dvc,"REFCNT") .EQ. 0 .or. f$getdvi(dvc,"REFCNT") .gt. 60000) THEN GOTO DVCFRE $dbzy: $cfd="%SQUASH-E-Device " $cfd2=" is in use." $cfd3:='cfd''dvc''cfd2' $WRITE SYS$OUTPUT cfd3. $ask sovrb "Configure device anyway? [Y/N][N]" $ovrb=0 H $if f$extract(0,1,f$edit(sovrb,"UPCASE,COLLAPSE")) .EQS. "Y" THEN ovrb=1 $if ovrb .ne. 0 then goto dvcbyp $ goto faktrymore $! goto getSquashDisk $dvcfre:6 $! Ensure the device isn't online but dismounted also. $tstt=f$getdvi(dvc,"sts") $ionline=16 $oln = ionline .and. tstt $if oln .ne. 0 then goto dbzy $dvcbyp: $ ! : $ ! Check to see if the configuration file already exists. $ ! $dupcf=0< $ccmd="sys$common:[sysmgr]Squash" + (dvc - ":") + ".startup", $if f$search(ccmd) .eqs. "" then goto getcfn $ WRITE SYS$OUTPUT "M $write sys$output "Configuration information for this device exists already." " $write sys$output "Please delete:" $write .$- $ SQUASH014.A p*> ! /[ACORNSQUASH.CODE.A]SQUASH_CONFIGURATION.COM;48 3 " sys$output ""! $write sys$output " ",ccmd ; $ccmd="sys$common:[sysmgr]Squash" + (dvc - ":") + ".daemon" ! $write sys$output " ",ccmd = $ccmd="sys$common:[sysmgr]Squash" + (dvc - ":") + ".shutdown" ! $write sys$output " ",ccmd $write sys$output ""< $ccmd="sys$common:[sysmgr]Squash" + (dvc - ":") + ".startup") $write sys$output "to use ",dvc," again." $write sys$output ""8 $! size, fence, cache, cont. file, unsafe-flg, small-flg9 $! Read old configuration info into the system if we can. $junk=" " $nfree=10000 $nrecc= (8 * nfree) / 5 + $if nrecc .gt. 2097151 then nrecc = 2097152 $nfr=(nrecc/50)+30 $mtf=0 $xxx=0 $umd=0 $nfenc=0
$fgusf=" "
$fgfst=" "
$fgsts=" "
$fgfts="*"
$fgcac=" " $ncach=8
$fgstf=" " $nrsz=nrecc
$nsiz=nrsz
$fgmnt=" " $sfg=0 $ vlbl = "" $set comm sys$system:zmenu $smptr=1 $gparm: $open gpm 'ccmd' $read gpm junk $read/end=gpmdn gpm junk$ $nsiz=f$integer(f$extract(3,9,junk))
$nrsz=nsiz $read/end=gpmdn gpm junk% $nfenc=f$integer(f$extract(4,9,junk)) $read/end=gpmdn gpm junk% $ncach=f$integer(f$extract(4,3,junk)) $read/end=gpmdn gpm junk& $cf=f$extract(4,f$length(junk)-4,junk) $read/end=gpmdn gpm junk $if f$extract(4,1,junk).eqs."1" $then $umd=1
$fgusf="*" $endif $read/end=gpmdn gpm junk $if f$extract(3,1,junk).eqs."1" $then $sfg=1
$fgsts="*"
$fgfts=" " $endif $gpmdn:
$close gpm( $! Try and get the right free space info0 $ rdcf = f$parse(cf,,,"directory","syntax_only")- $ ddcf = f$parse(cf,,,"device","syntax_only") $ dcf = ddcf + rdcf # $ nfree = f$getdvi(cf,"FREEBLOCKS") $nrecc= (8 * nfree) / 5 + $if nrecc .gt. 2097151 then nrecc = 2097152 " $if sfg .ne. 0 then nrecc= 2*nfree $ write sys$output "" ; $ write sys$output " Changing size or file reserved amount" C $ write sys$output " will make your current Squash container files" D $ write sys$output " unusable. These menu items will be marked with"F $ write sys$output " `@` to flag this for you if you reconfigure now." $ write sys$output "" $svovrb=ovrb
$sovrb="Y" $!if ovrb.ne.0 then goto getats D $if ovrb .eq. 0 then ask sovrb "Reconfigure device anyway? [Y/N][N]" $if ovrb .eq. 0 then ovrb=0 H $if f$extract(0,1,f$edit(sovrb,"UPCASE,COLLAPSE")) .EQS. "Y" THEN ovrb=1 $if ovrb.eq.1 $then $!getats:
$fgfst="@"
$fgstf="@"0 $ ask zjnk "Obtain new container files [y/n][n]" $svovrb=0 I $if f$extract(0,1,f$edit(zjnk,"UPCASE,COLLAPSE")) .EQS. "Y" THEN svovrb=1 $if svovrb.ne.0 then goto getcfn
$ goto swmenu $endif $dupcf=1F $write sys$output "You may inspect configuration for this device, but"D $write sys$output "must delete these files before reconfiguring it." $cf= "nla0:" $nfree=10000
$goto nlgo $!exit% $! we have a free FR type device now. . $! Now have to get the host device/file specs. $getcfn: $copy sys$input sys$output G Squash uses disk files, called "container files", to store compressed E data. Enter the file specification for the disk files to be created, E or the directory specification only to use default file names (e.g., F disk:[directory]). If the directory does not exist, you will be askedF if you want it created. If you enter a file name also, that file nameH and the filename with "_IDX" appended will be used. Thus if you specifyD "disk:[directory]squash1.dsk" as the container file name, two files will be created, namely: ( DISK:[DIRECTORY]SQUASH1.DSK and# DISK:[DIRECTORY]SQUASH1.DSK_IDX G You can just enter the directory name and be assured unique file names H will be created. All data on a Squash disk is contained in these files,4 so be sure not to delete them if you want the data. $eod $write sys$output ""K $write sys$output "Please enter the container file specs including device:" 8 $read/end=byebye/prompt="Container File>" sys$command cf $if cf .eqs. "" then goto getcfn $ ! . $ ! Check to see if the container files exist. $ ! $tstcrea: $ if f$parse(cf) .eqs. "" $ then_ $ write sys$output "%SQUASH-I-NODIRECTORY, Directory for container files does not exist." 0 $ rdcf = f$parse(cf,,,"directory","syntax_only")- $ ddcf = f$parse(cf,,,"device","syntax_only") $ dcf = ddcf + rdcf / $ ask cdcf "Create the directory now? [Y/N][N]" < $ if f$extract(0,1,f$edit(cdcf,"UPCASE,COLLAPSE")) .EQS. "Y" $ then $ crea/dir 'dcf' $ goto tstcrea $endif $ goto getcfn $ endif ; $ cf = f$parse(cf,dvc-":"+".dat") - f$parse(cf,,,"version") ' $ open/write/error=noaccess output 'cf' % $ write /error=noaccess output "test" $ close output $ delete 'f$parse(";0",cf)' $goto dirseemsok
$noaccess:< $ write sys$output "%SQUASH-I-NOACCESS, Cannot create ''cf'" $ close/nolog output
$ goto getcfn $dirseemsok: $close/nolog output " $nfree = f$getdvi(cf,"FREEBLOCKS") $nlgo:0 $ if f$search(cf) .eqs. "" .and. nfree .le. 7000 $ then l $ write sys$output "%SQUASH-W-NOSPACE, ",f$getdvi(cf,"fulldevnam")," has less than 7,000 free blocks." $ exit 4 $ endif $! Now get switches $!Try and use a menu for this $nrecc= (8 * nfree) / 5 + $if nrecc .gt. 2097151 then nrecc = 2097152 $nfr=(nrecc/50)+30 $mtf=0 $xxx=0 $umd=0 $nsiz=0H $nfenc=0
$fgusf=" "
$fgfst=" "
$fgsts=" "
$fgfts="*"
$fgcac=" " $dmnpri=4 $ncach=8
$fgstf=" " $vlogicl=""r $nrsz=nrecc
$nsiz=nrsz
$fgmnt=" " $sfg=0 $ vlbl = ""s $set comm sys$system:zmenu $smptr=1 $swmenu:+ $if nrecc .gt. 2097151 then nrecc = 2097152 ? $zmenu/POINTER="[1;7m-->[m"/SYMBOLS/initial='f$string(smptr)'rG Acorn SQUASH (tm) 00:00:00", SQUASH Configuration selection for 'dvc' Container file 'cf'" ; Recommended maximum volume size is 'nrecc' blocks (est)tC These would occupy all 'nfree' free disk blocks on host device."K Number of files needed to fill 'nrsz' blocks with 50 block files: 'nfr'd* Space reserved for index file: 'nfenc'J Currently selected cache size: 'ncach' virtual tracks (32 blocks each) - ^'fgfst' Select size of disk (now 'nrsz') I ^'fgstf' Select number of files on disk for index file reserved space = ^'fgsts' Use higher compression mode (Uses more CPU time) < ^'fgfts' Use lower compression mode (Uses less CPU time)M ^'fgusf' Use faster write mode (Data written on flush/dismount. See docs) ) ^'fgmnt' Mount this disk at boot time 3 ^'fgcac' Select Squash cache size for this diskL+ ^ Show currently assigned SQUASH diskst3 ^ Change execution node (currently 'thisnode')i> ^ Set base priority of Squash daemon (currently 'dmnpri'). ^ Exit this menu and set up configuration+ ^ Quit the configurator, doing nothing $! $if choice .eq. 12 then exit
$smptr=choicea $if choice .eq. 10 $ then* $ ask bpntr "Enter base priority selected"$ $ if bpntr .eqs. "" then goto swmenu $ if bpntr .lt.0.or.bpntr.gt.30 $ thenA? $ emit "%SQUASH-E-INVPRI Invalid priority, not in 0-30 range"i $ goto swmenu $ endif $ dmnpri=bpntr
$ goto swmenu $ endifw $if choice .eq. 3( $theni $ sfg = 1n $ fgsts="*"( $ fgfts=" " $ nrecc=nfree * 2 2 $ if sfg .eq. 0 then nrecc = (8 * nfree) / 5 $ goto swmenue $endif $if choice .eq. 4n $ then $ sfg = 0 $ fgsts=" " $ fgfts="*"e $ nrecc=nfree * 2e2 $ if sfg .eq. 0 then nrecc = (8 * nfree) / 5 $ goto swmenud $endif $cmsg=" x"2 $nrecc=nfree * 2+ $if sfg .eq. 0 then nrecc = (8 * nfree) / 5k $if choice .eq. 1 $thenf $ if xxx .ne. 0 then goto gtsz $ xxx = nreccm0 $ if xxx .gt. 32097152 then xxx = 32097152 $gtsz:A $ ask nsiz "Enter size of Squash device in blocks [''xxx']"a( $ if nsiz .eqs. "" then nsiz = xxx $ if (nsiz.lt.4096) $ thenK $ write sys$output "%SQUASH-E-TOOSMALL, Minimum size is 4096"m $ goto gtsza
$ endifd $ if (nsiz .gt. 32097151) $ thenM $ write sys$output "%SQUASH-E-TOOBIG, Maximum size is 32097151" $ goto gtsz_
$ endifx $ nrsz=nsizi
$ xxx=nsiz $ fgfst="*"C $ nfr = (nsiz / 50) + 30 $ goto swmenuy $endif $if choice .eq. 2n $thens $ nfenc=0R $ nfr = (nsiz / 50) +30kG $ emit "Reserve uncompressed space for the index file 1 block per file"d $getfnc:G $ ask nfenc "Reserve space for how many files` index entries [0]"C( $ if nfenc .eqs. "" then nfenc = 0H $! Add 2% more space to account for index file bitmap and a bit of other $! overhead. $ nfenco=nfenc1 $ if nfenc .gt. 0 then nfenc = nfenc + (nfenc/50) E $! Account for volume storage bitmap size and a little directory slop 4 $ if nfenc .gt. 0 then n I $ SQUASH014.A p*> ! /[ACORNSQUASH.CODE.A]SQUASH_CONFIGURATION.COM;48 3 % " fenc = 40 + (nsiz+4095)/4096( $ if nfenc .gt. nsiz then nfenc = nfenco $ if nfenc .gt. nsiz $ then< $ emit "%SQUASH-W-Cannot reserve larger size than disk size" $ endife= $ if nfenc .lt. 0 .or. nfenc .gt. nsiz then goto getfnct $ fgstf="*"c $ goto swmenu= $endif $if choice .eq. 5 $theni
$if umd .eq.0 $thenv $copy sys$input sys$output WARNING:E Squash normal write mode ensures that data is safely on disk beforeiF writes complete. This imposes some speed penalty when used, but letsH your data survive crashes, power outages, etc. In writeBACK cache modeC which you have selected, data is not recorded to disk fully until F the disk is dismounted or a FLUSH operation is done. This can mean aJ disk becomes unusable after a power outage. This mode is appropriate forF faster loading of SQUASH disks when you have the data elsewhere, butE normally should not be used for production access due to the dangertD that disk structures might not be updated in the event of a crash.J Note that space reserved for the index file is not cached, but directoryF files usually are. See the documents on the /MODE switch for further information. $! $usff=0 = $ask susff "Do you really want writeBACK cache mode [Y/N][N]:0H $if f$extract(0,1,f$edit(susff,"UPCASE,COLLAPSE")) .EQS. "Y" THEN usff=1 $if usff .eq. 0 then goto swmenu $umd=1
$fgusf="*" $goto swmenu $endif $if umd.ne.0 $thena $umd=0
$fgusf=" " $goto swmenu $endif $endif $if choice .eq. 6e $thenw $!mounto $mtf=1 $ask vlbl "Volume label" $if vlbl .eqs. "" $theno $mtf=0
$fgmnt=" " $goto swmenu $endif
$fgmnt="*" $vlogicl="" & $ask vlogicl "Logical name for volume" $vmtqual=""c+ $ask vmntqual "Additional mount qualifiers"
$wtsec=150 $wtscnds="150"C $emit "Allow 150 or more seconds for daemon rdy, more if big disks" ; $ask wtscnds "Seconds to wait for daemon to be ready [600]" ' $if wtscnds .eqs. "" then wtscnds="600"s( $if wtscnds.lts."150" then wtscnds="150" $wtsec=f$integer(wtscnds) $if wtsec.lt.150 then wtsec=1500 $wtcnt=wtsec/6 $goto swmenu $endif $if choice .eq. 7r $then0
$sncach=ncachrL $ccmd="ask ncach ""Enter cache size in 32-block `virtual tracks` [2-256]["""! $ccmd=ccmd+f$string(sncach)+"]"""8 $'ccmd'"" $if ncach .eq. 0 then ncach=sncach $if ncach .lt.2 then ncach=2 $if ncach .gt. 256 then ncach=64
$fgcac="*" $goto swmenu $endif $if choice .eq. 8n $then $! show current diskse4 $if f$search("sys$manager:squash*.startup") .eqs. "" $then 8 $write sys$output "No Squash disks currently configured"
$goto getprocf $endifJ $search/nohighlight/window=3 sys$startup:squash*.startup "Container file:" $getproc:)' $ask junk "Press RETURN key to proceed"( $goto swmenu $endif $if choice .eq. 9f $thene' $ask thisnd "Enter execution node name"r/ $thisnd = f$edit(thisnd,"COLLAPSE,TRIM,UPCASE")" $tnbcl:" $thisnd = thisnd - ":"> $if f$locate(":",thisnd) .lt. f$length(thisnd) then goto tnbcl* $if thisnd .nes. "" then thisnode = thisnd $goto swmenu $endif $if choice .eq. 11 $then $if nsiz .eq. 0f $then$H $write sys$output "%Squash-F-No size given or zero size given. Exiting." $exitr $endif $ if fgmnt .nes. "*" $ thenK $ write sys$output "%Squash-I-no volume label available. Cannot INIT disk."i $duit=0eG $ask duitf "Do you really want to start the disk without INIT [Y/N][N]:fH $if f$extract(0,1,f$edit(duitf,"UPCASE,COLLAPSE")) .EQS. "Y" THEN duit=1 $if duit .eq. 0 then goto swmenu $ endifo $endif $if dupcf .eq.1 then goto cfgnxt $! Now we have the switches.M $ startupCommandFile = "sys$common:[sysmgr]squash" + (dvc - ":") + ".startup"o; $ daemonCommandFile = f$parse(".daemon",startupCommandFile) 4 $ daemonLogFile = f$parse(".log",startupCommandFile)? $ shutdownCommandFile = f$parse(".shutdown",startupCommandFile)"( $ open/write output 'startupCommandFile'; $ write output "$ ! Do not edit lines beginning with `$!+`"z# $ write output "$!+",f$string(nsiz)N% $ write output "$!+ ",f$string(nfenc)e% $ write output "$!+ ",f$string(ncach) $ write output "$!+ ",cf# $ write output "$!+ ",f$string(umd)e# $ write output "$!+ ",f$string(sfg)e8 $! size, fence, cache, cont. file, unsafe-flg, small-flg> $ write output "$ set proc/priv=(cmkrnl,sysprv,netmbx,tmpmbx)"" $ write output "$ sysgen:=$sysgen"" $ write output "$ sysman:=$sysman"E $if f$getsyi("CPU") .gt. 127 then write output "$ sysgen:=$sysman io",
$ umst=" "& $ if umd then umst=" ->WriteBACK mode"f $ write output "$ ! Device: ",dvc," Size:",f$string(nsiz)," Index File Reserve:",f$string(nfenc),umst( $ write output "$ ! Container file: ",cf $ mtfyn="N"o $ if mtf .ne. 0 then mtfyn = "Y"
$ cprhl="Low"e! $ if sfg .ne. 0 then cprhl="High"h\ $ write output "$ ! Mount at boot time: ",mtfyn," Compress:",cprhl," Cache:",f$string(ncach)" $ write output "$ device := ",bdvc $ write output "$ m = ",mtfw $ zwww="$ want = """ $ zwww = zwww + thisnode $ zwww=zwww+ """ $ write output zwwwR0 $ write output "$ here = f$getsyi(""nodename"")"% $ write output "$ if here .eqs. """"" $ write output "$ then" 5 $ write output "$ if f$mode() .eqs. ""INTERACTIVE""" $ write output "$ then"R $ write output "$ write sys$output ""SCSNODE parameter not set. No nodename""": $ write output "$ write sys$output ""Fatal, exiting""" $ write output "$ endif"> $ write output "$ endif"% $ write output "$ if here .nes. want"c $ write output "$ then" 5 $ write output "$ if f$mode() .eqs. ""INTERACTIVE"""" $ write output "$ then"F $ write output "$ write sys$output ""SQUASH not starting on node"" $ ccct="$ write sys$output here" $ write output cccty/ $! write output "$ write sys$output 'here'" P $ write output "$ write sys$output ""which is different from desired node""", $ ccct="$ write sys$output """+"''want'"+""" $ write output cccta/ $! write output "$ write sys$output 'want'"g, $ write output "$ write output "exiting" $ write output "$ endif"" $ write output "$ endif"/ $ write output "$ if here .nes. want then exit"t $if f$getsyi("CPU") .le. 127 then write output "$ if .not. f$getdvi(device,""exists"") then sysgen connect 'device' /noadapter/driver=frdriver" $if f$getsyi("CPU") .gt. 127 $ thenr $ write output "$ if .not. f$getdvi(device,""exists"") then sysman io connect 'device' /noadapter/driver=frdriver" $ endif ! $ write output "$ device := ",dvcu8 $ write output "$ if f$getdvi(device,""refcnt"") .ne. 0" $ write output "$ then"cO $ write output "$ write sys$output ""%Squash-F-device busy. Exiting. "",device"i $ write output "$ endif"B $ write output "$ if f$getdvi(device,""refcnt"") .ne. 0 then exit"[ $ write output "$ if f$search(""",daemonlogfile,""") .nes. """" then delete ",daemonlogfile - $! vary wsextent to handle chosen cache size.v $ nexten= 32*ncach + 3000nM $ write output "$ rdtc:==run/deta/priv=(all,nobypass)/noaccount/ast_limit=50"1o $ write output "$ if f$search(""sys$manager:squashlog.tmp"") .nes. """" then delete sys$manager:squashlog.tmp."(? $ write output "$ass/user sys$manager:squashlog.tmp sys$output" H $ write output "$ rdtc /buffer_limit=64000/enqueue_lim=60/io_direct=50-"( $ write output " /priority=",dmnpri,"-"F $ write output " /io_buffered=50/file_limit=30/job_table_quota=1024-" $ sbig=""b' $ if nsiz .gt. 2097151 then sbig="/BIG"e7 $! for old small image page_file=20000 below, not 28000d $ if sbig .eqs. "/BIG" $ thenU $ write output " /maximum_working=1500/page_file=28000/extent=",nexten,"/uic=[1,4]-") $ elseU $ write output " /maximum_working=1500/page_file=28000/extent=",nexten,"/uic=[1,4]-" $ endif ` $ write output " /input=",daemonCommandFile,"/output=",daemonLogfile," sys$system:loginout.exe"x $! write output "$ run /detached/authorize/input=",daemonCommandFile,"/output=",daemonLogfile," sys$system:loginout.exe" $ write output "$ i = 0"< $ write output "$ open/read gtpid sys$manager:squashlog.tmp" $ write output "$ xxpid="" """# $ write output "$ read gtpid xxpid" $ write output "$ close gtpid"4 $ write output "$ delete sys$manager:squashlog.tmp.". $ write output "$ gtpid=f$extract(53,8,xxpid)"1 $ write output "$ on warning then goto nopidhere"t $ write output "$10$:"0 $ write output "$ xxx = f$getjpi(gtpid,""pid"")"@ $ write output "$ if (f$getdvi(device,""sts"") .and. 16) .ne. 0" $ write output "$ then"nb $ if f$getsyi("CPU") .gt. 127 then write output "$ if f$getsyi(""cluster_member"") .eqs. ""TRUE"""8 $ if f$getsyi("CPU") .gt. 127 then write output "$ then"n $ if f$getsyi("CPU") .gt. 127 then write output "$ if m .and. (p1 .eqs. """") then set device/served 'device'"9 $ if f$getsyi("CPU") .gt. 127 then write output "$ endif"ns $ write output "$ if S= $ SQUASH014.A p*> ! /[ACORNSQUASH.CODE.A]SQUASH_CONFIGURATION.COM;48 3 - m .and. (p1 .eqs. """") then mount/system/noassist'vmntqual' 'device' ",vlbl," ",vlogiclgf $ write output "$ if m .and. (p1 .eqs. """") then directory/size/date/out=nla0: 'device'[000000] $ write output "$ exit"f $ write output "$ endif" $ write output "$ wait 00:00:06" $ write output "$ i = i + 1"> $ write output "$ if i .lt. ",f$string(wtcnt)," then goto 10$"0 $ write output "$ xxx = f$getjpi(gtpid,""pid"")"i $ write output "$write sys$output ""%SQUASH-W-Device taking too long to go online with process active."""" $ write output "$ nopidhere:"sU $ write output "$write sys$output ""%SQUASH-E-Device taking too long to go online."""u $ write output "$ exit 4 $ close output) $ open/write output 'shutdownCommandFile'2 $ write output "$ set noon" ! $ write output "$ device := ",dvc-' $ write output "$ set process/priv=all" A $ write output "$ if .not. f$getdvi(device,""exists"") then exit"s@ $ write output "$ if (f$getdvi(device,""sts"") .and. 16) .ne. 0" $ write output "$ then"h) $ write output "$ mc squash_flush ",dvc " $ write output "$ dismount ",dvc $ write output "$ endif" $ write output "$ set on" $ write output "$ exit" $ close output' $ open/write output 'daemonCommandFile't $ sbig="" ' $ if nsiz .gt. 2097151 then sbig="/BIG" t $ squashCommand = "$ squash"+"/size:" + f$string(nsiz) + " /fence:" + f$string(nfenc) + " /cache:" + f$string(ncach)> $ if sfg .ne. 0 then squashCommand = squashCommand + " /SMALL"B $ if umd .ne. 0 then squashCommand = squashCommand + " /WRITEBACK"6 $ squashCommand = squashCommand + " " + dvc + " " + cf $ write output "$ set noon".2 $ write output "$ set process/priv=(all,nobypass)"( $ write output "$ set process/name=",dvc. $ zddcf = f$parse(cf,,,"device","syntax_only")K $! Squash needs highwater marking for the integrity of container file index $! Ensure it gets it here.# $ if zddcf .eqs. "" then shmkf="$!" = $ if zddcf .nes. "" then shmkf="$set volume/highwater "+zddcfa $ write output shmkf $ write output squashCommand $ write output "$ logout"y $ close output $if mtf .eq. 0 then goto cfgnxt," $if vlbl .eqs. "" then goto cfgnxt $if ovrb .ne. 0 then goto cfgnxt/ $ask dini "Initialize the device now [y/n][y]?"h $vini=1 G $if f$extract(0,1,f$edit(dini,"UPCASE,COLLAPSE")) .EQS. "N" THEN vini=0u $if vini .eq. 0 then exite$ $! run the commandfile and init now. $! $ @'startupCommandFile' NOMOUNTa* $ if (f$getdvi(dvc,"sts") .and. 16) .eq. 0 $ thenI $ write sys$output "%SQUASH-E-Device taking too long to go online."t $ exit 4 $ endife $if vlbl .eqs. "" then exitp $clst="1"d# $if (nsiz.gt.1009000) then clst="2"t# $if (nsiz.gt.2017000) then clst="3"t $if (nsiz.gt.3000000)D $ then $ cfac=(nsiz+1000000)/1008002 $ clst=f$string(cfac) $ endifa $cccc=" "i/ $cccc="init/struct=2/cluster="+clst+"/index=beg$ $nfenn=nfenc-30E9 $if(nfenc.gt.60)then cccc=cccc+"/header="+f$string(nfenn)t' $cccc=cccc+"/sys/noverif "+dvc+" "+vlblu $'cccc' 2 $mou/sys/noassist'vmntqual' 'dvc' 'vlbl' 'vlogicl'* $dir/size=all/date/out=nla0: 'dvc'[000000] $cfgnxt:+ $ask nuth "Configure another disk [Y/N][N]"lL $if f$extract(0,1,f$edit(nuth,"UPCASE,COLLAPSE")) .EQS. "Y" THEN goto mordsk $byebye: $ exit 1 "Logical name for volume" $vmtqual=""c+ $ask vmntqual "Additional mount qualifiers"
$wtsec=150 $wtscnds="150"C $emit "Allow 150 or more seconds for daemon rdy, more if big disks" ; $ask wtscnds "Seconds to wait for daemon to be ready [600]" ' $if wtscnds .eqs. "" then wtscnds="600"s( $if wtscnds.lts."150" then wtscnds="150" $wtsec=f$integer(wtscnds) $i F; $ SQUASH014.A 9 ! &[ACORNSQUASH.CODE.A]SQUASH_FLUSH.OBJ;5 > & * [ACORNSQUASH.CODE.A]SQUASH_FLUSH.OBJ;5 + , 9 . / 4 - ! 0 1 2 3 K P W O 5 6 `S 3ڗ 7 `Ο\ 8 `+rq 9 G H J 4 ACSQFLUSH0128-Apr-1994 15:2428-Apr-1994 15:24 VAX FORTRAN V5.4-79 ACSQFLUSH ] P FRn: : " Cannot find device name. Exiting. %Squash-F-assign failed. Msg=)) ACSQFLUSH P
LIB$GET_FOREIGN @ |
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SYS$DASSGN 4 G DFOR$EXIT 4 b# x DFOR$EXIT 4 @ DFOR$EXIT = t l 6 " Cannot find device name. Exiting. 7 6 %Squash-F-assign failed. Msg= H 7 6 H 7 E
E = 5 - , ACSQFLUSHDEC Fortran V6.1-386
=
4 x 4 = ACSQFLUSH 4 = OG
> : < 9 ā % & * > * * , . 0 $
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4 =
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0 FFIIDD FFFIII 5 $LINK$ i ` $CODE$ l $IODATA$ ` $BSS$ $DATA$ 0 J x ACSQFLUSH LIB$GET_FOREIGN ( J IVLEN DFOR$EXIT
SYS$ASSIGN
SYS$GETMSG SYS$QIOW
SYS$DASSGN DFOR$WRITE_SEQ_FMT DFOR$HANDLER OTS$MOVE OTS$FILL OTS$MOVEM OTS$INDEX = 0 ; =
8 OTS$MOVE =
@ SYS$QIOW 8 OTS$INDEX = 8 `
SYS$GETMSG ; = 0P ; = | 7 DFOR$HANDLER = ; DFOR$WRITE_SEQ_FMT 8 OTS$FILL 8 OTS$MOVEM = : DFOR$EXIT =
SYS$DASSGN
SYS$ASSIGN LIB$GET_FOREIGN =
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G B4GTGB" @ZkTGTG0 " 0 @ C@G @ 8D
P B5 BGGTBG @ZkGH B @ZkB4GTGGX B" @ZkG0 P B0 @G GG @ZkGH B @Zk? 4GTG4G _71 @ w@G .G J" G GGG1:BGP B0 BGBGX B"4G @ZkGH B @Zk4GTGBGX B" @ZkGP B0 @GGG @ZkGH B @ZkG_"
8 B "@ bb"GG @Zk4Gh Bx "p b @Zk$vH B$8 @@ b@ "D 8 ="GGGGG @ZkGG8 }G0 @ ]"0 "GG C B?$b ! @ = D T1" @ZkG_"0 "b"8 B@ "T GH 0 "@ b H@ @Zk 0 TGBGb C\ TG G G G G G ( @Zk?$ ! G0 D0 " 0 BG@ =T1" bD @ ]"GG @ZkG_"G0 "b"8 B@ "T H @ b` " H@ @Zk ?& 1"@ ]"U@ 0DD G0 G@ =G0 "GB bD T1" @ZkG_"0 "b"8 B@ "T GH ` "@ b H@ @Zk0 B4GGbp C >4G 4G G( GGG @Zk?& 1"G0 D0 ¤ B@ =G0 " b@ ]"D ݰGT1"G @ZkG_"G0 "b"8 B@ "T H ݴ@ b` " H@ @Zk Š?& 1"@ ]" 0D U@GD 0 ¤G@ =G0 "GB bD ݰT1" @ZkG_"0 "b"8 B@ "T GH ݴ` " ; $ SQUASH014.A ! *[ACORNSQUASH.CODE.A]SQUASH_FLUSH.OBJ_A2;21 v @ b H@ @Zk BG 4G C TG 4GbG( GGG @ZkG 0D" U@GD 0 0 " $B @ bT1"D @ ]"GG @ZkG_"G0 ¤ "b"8 B@ "TƠH @ b` "&H@ ݴ @Zk B C bG4G @Zkh Bx "p b4G @Zk 4G c GP ]X ]` }h p x ݤ #k 1 4G !1B
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G OTS$MOVEM 4
@ OTS$MOVEM 4 G OTS$FILL 4 @ OTS$FILL 4
` G OTS$MOVEM 4
| @ OTS$MOVEM 4 G OTS$FILL 4 @ OTS$FILL 4 G OTS$INDEX 4 @ OTS$INDEX 4
G OTS$MOVEM 4
@ OTS$MOVEM 4 G OTS$FILL 4 @ OTS$FILL < G DFOR$WRITE_SEQ_FMT <
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4 0 @ 4 SYS$QIOW 4 P G |
SYS$GETMSG 4 d b# x
SYS$GETMSG 4 x @ |
SYS$GETMSG < G DFOR$WRITE_SEQ_FMT <
b# x DFOR$WRITE_SEQ_FMT < @ DFOR$WRITE_SEQ_FMT 4 G
SYS$GETMSG 4 b# x
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SYS$GETMSG < , G T DFOR$WRITE_SEQ_FMT <
D b# x DFOR$WRITE_SEQ_FMT < P @ T DFOR$WRITE_SEQ_FMT 4 \ G SYS$QIOW 4 h b# x SYS$QIOW 4 @ SYS$QIOW 4 G
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SYS$GETMSG 4 P b# x
SYS$GETMSG 4 h @ l
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SYS$DASSGN 4 G DFOR$EXIT 4 b# x DFOR$EXIT 4 @ DFOR$EXIT = t l 6 " Cannot find device name. Exiting. 7 6 %Squash-F-assign failed. Msg= H 7 6 H 7 E
E = 5 - , ACSQFLUSHDEC Fortran V6.1-386
=
4 x 4 = ACSQFLUSH 4 = OG
> : < 9 ā % & * > * * , . 0 $
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q 9 G H J ? ? ZGPV1.0 3-OCT-1994 17:05 DEC C V1.3-000A
OUT_BUF_ADR OSIZ
UNPACKABLE
$READONLY$ 0A $BSS$ $DATA$ ` $LINK$ $LITERAL$ i $CODE$ $ABS$ ( J ZCSET ( J P @ ZGETC ( J 8 ZPUTC 0 J ( GTSIZNOW Od $ SQUASH014.A Y % ! [ACORNSQUASH.CODE.A]ZGP.OBJ_A;62_A2;21 = 0 ; ; ; ; = 0 ; = 0 ; ; = 0 @ ; , , = @" SB ; @ @ [ ` k !1 @ 0. P" " R2JGJ_F Gk_" Gk G0JJ @vJ!B ; R" . aU JF >0`B @ 4G ak ;4G k G k:
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=
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OUT_BUF_ADR OSIZ
UNPACKABLE
$READONLY$ 0A $BSS$ $DATA$ ` $LINK$ $LITERAL$ i $CODE$ $ABS$ ( J ZCSET ( J P @ ZGETC ( J 8 ZPUTC 0 J ( GTSIZNOW = 0 ; ; ; ; = 0 ; = 0 ; ; = 0 @ ; , , = @" SB ; @ @ [ ` k !1 @ 0. P" " R2JGJ_F Gk_" Gk G0JJ @vJ!B ; R" . aU JF >0`B @ 4G ak ;4G k G k:
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4 8 4 = zputc 4 = J B A 9 4 9 : : : ; @ @
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t =
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=
= * [ACORNSQUASH.CODE.A]ZMENU.CLD;2 + , * . / 4 P - ! 0 1 2 3 K P W O 5
6 }B'˖ 7 ϟ\ 8 q 9 G H J Define Verb ZMENU Image "sys$system:ZMENU" 0 Qualifier SCROLLING , Syntax=ZMENU_SCROLLING 1 Parameter P1 , Value( Default="SYS$INPUT:" ) ' Qualifier SYMBOLS , Nonnegatable I Qualifier POINTER , Default, Nonnegatable , Value( Default="-->" ) C Qualifier ITEM , Default, Nonnegatable, Value( Default="^" ) P Qualifier INITIAL , Default , Nonnegatable, Value(Type=$NUMBER,Default=1) $ Qualifier WIDE , Nonnegatable + Qualifier NOINTERRUPT , Nonnegatable + Qualifier TEXT , Nonnegatable, Value & Qualifier START0 , Nonnegatable % Qualifier BOUND , Nonnegatable % Qualifier DEBUG , Nonnegatable ' Qualifier VERSION , Nonnegatable Define Syntax ZMENU_SCROLLING " Image "sys$system:ZMENU_SCROLL" 0 Parameter P1 , Value(Required,Type=$INFILE) C Qualifier ITEM , Default, Nonnegatable, Value( Default="^" ) $ Qualifier WIDE , Nonnegatable ' Qualifier SYMBOLS , Nonnegatable * [ACORNSQUASH.CODE.A]ZMENU.EXE;2 + , 1 . * / 4 * ) - ! 0 1 2 3 K P W O ) 5 6 %i 7 @:П\ 8 @z r 9 G H J 0 D X 0205 ( -%i l F ZMENU 01 -%i 05-05
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LIBRTL_001 [J P1 .MENU )[22;132H VERSION NSWC ZMENU Rev 1.005 Created 7-JAN-1992 12:00 DEBUG SYMBOLS WIDE TEXT NOINTERRUPT START0 BOUND INITIAL POINTER ITEM MENU TEXT [!2UL;!2ULH [!UL;!ULH [2D 00:00:00 ZMENU_TEXT [20H[J[20;24r[24H[K------------------------------------------------------------------------------ E [7m H E L P [m Use arrow keys to move the pointer to the desired item. E Type RETURN, ENTER, DO, or SELECT to select the item. E Type CONTROL-W to refresh the screen. E [5;7m Type a blank to return to the menu. [m [H[2K [1;24r NONINT, ZMENU must be called only from INTERACTIVE processesEMPTY, the menu file contains no lines to displayINSUFF, the menu contains fewer than two selectable itemsBADQUAL, invalid /TEXT qualifierTEXT, missing or invalid text areaITEMCOL, the menu contains an item marker too close to the left margin CHOICE [?25h[1;24r[23H[m TT TT !UL SYS$INPUT:SYS$OUTPUT:SYS$COMMAND: !UL SYS$OUTPUT: [?3h[?3l SYS$OUTPUT MENU , ( @ T MENU ( | SYMBOLS ( q POINTER $ ITEM ( INITIAL , NOINTERRUPT $ @ WIDE $ d TEXT ( START0 $ BOUND p
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