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Topic: EFS IRIX

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	Qwika - Encrypting File System
		EFS does this using public key cryptography, and aims to ensure that decrypting the files is practically impossible without the correct key.
		EFS works by encrypting a file with a bulk symmetric key (also known as the File Encryption Key, or FEK), which is used because it takes a relatively smaller amount of time to encrypt and decrypt large amounts of data than if an asymmetric key cipher is used.
		To properly use EFS, you should mark complete folders as EFS encrypted (so that all temporary files like Word document backups too are encrypted), and when you wish to encrypt particular files, copy them to that folder, and then securely wipe the plaintext versions.
	wikipedia.qwika.com /wiki/EFS (1072 words)

	Extent File System for Linux 2.2 (Site not responding. Last check: 2007-10-28)
		Since 6.0, xfs has been bundled with IRIX and users are being encouraged to migrate to xfs filesystems.
		IRIX support for efs will be read-only in versions of IRIX beyond 6.5, however efs is still very much in use on SGI software distribution CDs.
		The efs kernel module is an implementation of the extent file system for linux 2.2 kernels.
	aeschi.ch.eu.org /efs (236 words)

	Encrypting File System (Site not responding. Last check: 2007-10-28)
		EFS does this using public key cryptography, and aims to ensure that decrypting the files is practically impossible without the correct key.
		EFS works by encrypting a file with a bulk symmetric key (also known as the File Encryption Key, or FEK), which is used because it takes a relatively smaller amount of time to encrypt and decrypt large amounts of data than if an asymmetric key cipher is used.
		To properly use EFS, you should mark complete folders as EFS encrypted (so that all temporary files like Word document backups too are encrypted), and when you wish to encrypt particular files, copy them to that folder, and then securely wipe the plaintext versions.
	www.alamedacaus.com /details/Encrypting_File_System (0 words)

	Scalability in the XFS File System
		EFS was not designed with large systems and file systems in mind, and it was faltering under the pressure coming from the needs of new applications and the capabilities of new hardware.
		EFS and file systems based on the BSD Fast File System [McKusick84] falter in this area due to their dependence on a file system scavenger program to restore the file system to a consistent state after a crash.
		Measurements for multiple, asynchronous threads with EFS are not given, because the performance of EFS with multiple threads is the same or worse as with one thread due to its single threaded (per file) I/O path.
	www.cis.upenn.edu /~bcpierce/courses/dd/papers/xfs.html (0 words)

	IRIX System Administration (Site not responding. Last check: 2007-10-28)
		EFS is quite light on system resources and can be used on all SG systems effectively.
		EFS has not changed recently and is therefore portable across versions of IRIX.
		EFS filesystems can fragment over time and therefore a programme called fsr, by default, is run by the cron daemon weekly to reorganised filesystem layout.
	www.dl.ac.uk /TCSC/disco/Courses/IRIXAdmin/sect6/s_6_p13_efs.html (0 words)

	IRIX: efs
		IRIX support for dos filesystems is restricted to removable disk devices such as floppy and floptical disks.
		EFS The older extent-based disk filesystem used by IRIX for disks and also for IRIX software distribution CD-ROMs.
		IRIX support for hfs filesystems is restricted to removable disk devices such as floppy and floptical disks and to CD-ROMs.
	nixdoc.net /man-pages/IRIX/man4/efs.4.html (0 words)

	Initialization of IRIX Disk Drives
		IRIX can use to different file systems, EFS and XFS and the drives can be set up as a systems disk or an option drive.
		When the standalone version of fx is booted without the -x option, it prompts to see if you wish to use the expert mode, because it is often forgotten on the command line.
		Note: In order to partition a 9GB or larger drive for use with IRIX 5.3 or earlier, you need to configure the drive into smaller partitions where each partition is less than 8GB due to operating system limitations.
	www.hummingbirdcomp.com /initialization_of_irix_disk_drives.htm (2870 words)

	[No title]
		EFS will continued to be supported for CD-ROM devices, and to allow old disks to be backed up or read.
		Under IRIX 6.5 and later, PIDs are assigned values that are not predictable and the maximum PID value is now considerably larger, at approximately 2 billion.
		The IRIX EOE Perl5 is compiled -n32 -mips3 with 64bit ints, and will not load pre-5.003 or Freeware extensions (compiled -32), so you must recompile and reinstall any extensions that you use.
	sgi.tuwien.ac.at /relnotes/2nd.cgi/irix/IRIX_6.5.28_InstTools1/relnotes/eoe (0 words)

	Initializing IRIX Hard Disks
		IRIX can use to different file systems, EFS and XFS and the drives can be set up as a systems disk or an option drive.
		The other version runs as an IRIX command and is normally used by the superuser.
		Note: In order to partition a 9GB or larger drive for use with IRIX 5.3 or earlier, you need to configure the drive into smaller partitions where each partition is less than 8GB due to operating system limitations.
	www.biochem.ucl.ac.uk /~jahid/IRIX/installing_a_hard-disk_IRIX.htm (0 words)

	[No title]
		The IRIX Development Foundation is a set of four separate CD's for IRIX 6.2, 6.3, 6.4 and 6.5 respectively.
		Subsystems from the IRIX Development Foundation CD must be installed before the front-ends from the MIPSpro Compiler CD's are installed.
		NOTE: Since the compiler_eoe, c++_eoe and ftn_eoe images are bundled with all of the other IRIX eoe images that are required for installation under /, inst may flag these other subsystems as required and cause a conflict.
	sgi.tuwien.ac.at /relnotes/2nd.cgi/irix/IRIX_6.5_DevFoundation/relnotes/IDF (0 words)

	Indigo2 and POWER Indigo2 Technical Report: Section 8...
		IRIX 6.0.1 is an upwardly compatible revision of IRIX 5 that incorporates substantial functionality from UNIX System V, Release 4.1.
		Because the IRIX 6.0.1 kernel itself is a 64-bit entity, all pointers and longs are treated as 64-bit quantities.
		IRIX 6.0.1 supports the SVR4 interfaces for memory-mapped I/O, which can make disk files visible in the address space of the program and allow them to be accessed without explicit I/O operations.
	www.futuretech.blinkenlights.nl /i2sec8.html (0 words)

	SGI TPL View (admin)
		IRIX usually kills the process which is using the most virtual memory, which may well not be the process which most recently requested virtual memory.
		IRIX 5.x works like IRIX 4.0.x, but one can set the amount of virtual memory which IRIX is allowed to overallocate.
		Date: 15 Jun 1996 00:00:01 EST In IRIX 6.1 and earlier, ipfilterd itself is part of eoe.sw.ipgate but the ipfilterd(1M) manpage is part of eoe2.sw.netman and the netsnoop(1M) manpage (ipfilterd uses netsnoop syntax) is part of the extra-cost NetVisualyzer package.
	techpubs.sgi.com /library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=FAQ&fname=/usr/FAQ/admin.txt (0 words)

	Search Results: efs - ABCNEWS.com
		IRIX support for efs will be read-only in versions of IRIX...
		EFS and Montpellier, the leading of providers of tax management solutions...
		EFS uses a public key and a private key for encryption.
	infospace.abcnews.com /_1_ZU5T7O03GG6FHY__info.abcnws/dog/results?otmpl=dog/webresults.htm&qcat=web&ran=&qkw=efs (0 words)

	SGI TPL (IRIX 6.2: Administrative/IA_DiskFiles - Chapter 3. Filesystem Concepts)
		The IRIX EFS and XFS filesystems are slightly different internally from other UNIX filesystems and have slightly different administration commands and procedures.
		In the IRIX operating system there is always one filesystem that is itself referred to by that name, the Root filesystem.
		Advanced features of EFS are that it keeps multiple inode tables in close proximity to data blocks rather than a single inode table, and it uses a bitmap to keep track of free blocks instead of a list of free blocks.
	techpubs.sgi.com /library/tpl/cgi-bin/getdoc.cgi/0620/bks/SGI_Admin/books/IA_DiskFiles/sgi_html/ch03.html (0 words)

	Comparing Hummingbird with EFS and XFS: single thread.
		Since EFS supports file systems up to 8 GB in size, we could not test it with 9 or 18 GB disks.
		Hummingbird throughput is much higher than both XFS and EFS on the same disk size as seen in the UFS experiments, and the user-perceived latency (5th column in Table 4) is smallest in Hummingbird.
		The second observation from Table 4 is that EFS is much slower than XFS, which is a journalling file system.
	www.usenix.org /events/usenix01/full_papers/shriver/shriver_html/node35.html (300 words)

	EFS (IRIX) - Wikipedia, the free encyclopedia
		EFS (Extent Filing System) is an older block filing system used in Silicon Graphics' IRIX versions prior to the 5.3 release.
		There is also a (different) filing system called EFS under Microsoft Windows 2000.
		This page was last modified 06:42, 7 November 2005.
	en.wikipedia.org /wiki/EFS_(IRIX) (0 words)

	IRIX Advanced Site and Server Administration Guide
		It is an IRIX EFS, and it should be mounted read/write so that anyone who has permission can write files in the file system.
		When a file system is identified to the IRIX system through a mount(1M) command, an entry is made in the mount table, and the super-block is read into an internal buffer maintained by the kernel.
		The EFS file system always attempts to grow the last extent if the following blocks are free, or to preallocate a large number of contiguous free blocks when allocating through a new extent.
	rsusu1.rnd.runnet.ru /sgi/advanced/ch8.html (0 words)

	IRIX
		IRIX has transitioned its hardware line completely to 64-bit technology, but lags in the area of 64-bit standards conformance, without support for the predecessor of the 64-bit UNIX98 standard, UNIX95.” —D.H. Brown Associates
		IRIX 6.4 places third, bundling CacheFS and AutoFS, and network security features almost as strong as Digital’s.
		“IRIX 6.4 earns a surprising lead [among commercial UNIXs] for reliability and scalability functions overall, having previously introduced many of the features that are only now being offered by high-profile commercial competitors.
	www.osdata.com /oses/irix.htm (1163 words)

	This Old SGI
		The two recommended versions of IRIX for older hardware are the various flavors of IRIX 4.0.5 (with 4.0.5f being the most recent general hardware support release), and IRIX 5.3 (with patches applied?).
		Note however, that IRIX 5.3 does not support the "G" graphics option for the Professional series, and may not support OpenGL on some of the older graphics hardware platforms such as the Personal Iris TG or the Professional series GT.
		The standalone version is used when you have a copy of the IRIX installation media, and you wish to install a fresh new copy of IRIX on a virgin disk.
	www.pimpworks.org /sgi/4dfaq.html (0 words)

	[No title]
		However, IRIX 6 is 64-bit and support for large file/file systems can be added relatively trivially (the interfaces are all 64-bit, off_t is 64-bit, etc).
		IRIX 5 uses the same EFS as IRIX 4.
		EFS is indeed extent based, as you might guess from the name; up to 248 (512 byte) blocks per extent.
	alumnus.caltech.edu /~rdv/comp-arch-storage/bigunixfsdesc.html (0 words)

	Visionwebhosting J2EE Cheap Web Hosting - Knowledge Center - Filesystem Easy Guide (Site not responding. Last check: 2007-10-28)
		Since 6.0, xfs has been bundled with IRIX and users are being encouraged to migrate to xfs
		IRIX support for efs will be read-only in versions of IRIX beyond 6.5, however efs is still very
		There are two kernel modules for linux to access EFS filesystem.
	www.visionwebhosting.net /Filesystems-Howto/page0050.htm (0 words)

	IRIX System Administration (Site not responding. Last check: 2007-10-28)
		A hard disk partition simply gives IRIX a flat area of blocks that can be addressed.
		The root file system is mounted at startup and can't be unmounted whilst IRIX is running but is otherwise a normal filesystem.
		The three main types of filesystems, in IRIX are efs, xfs and nfs.
	www.dl.ac.uk /TCSC/disco/Courses/IRIXAdmin/sect6/s_6_p12_filesys.html (0 words)

	Gentoo Forums :: View topic - Mounting EFS (Irix) partitions from Gentoo MIPS LiveCD?
		Mounting EFS (Irix) partitions from Gentoo MIPS LiveCD?
		The thing that I know of is that if the IRIX filesystem was uncleanly mounted (Due to a power failure or whatnot), you won't be able to do much with it under Linux because Linux's XFS implementation apparently can't deal with unclean XFS partitions.
		For future reference, anything old enough to be using an EFS root will never require read-write access to change the password.
	forums.gentoo.org /viewtopic-t-431551-highlight-.html (476 words)

	ISS X-Force Database: irix-fsr-efs-symlink(10275): SGI IRIX fsr_efs symlink
		SGI IRIX version 6.5.x is vulnerable to a symlink attack in the fsr_efs binary, which is installed by default as part of the "eoe.sw.base" package.
		A local attacker could create a symbolic link from the /var/tmp/.fsrlast file to any file on the system, which would be overwritten once fsr_efs is executed.
		CVE-2002-1517: fsr_efs in IRIX 6.5 allows local users to conduct unauthorized file activities via a symlink attack, possibly via the.fsrlast file.
	xforce.iss.net /xforce/xfdb/10275 (316 words)

	EFS-Testers Archive: compile problems on Lucid 19.10 and run problems on 19.22 (Site not responding. Last check: 2007-10-28)
		This is what happens, when I attempted to use it however: (setq efs-gwp-prompt-pattern "^[^#$%>\n][#$%>] ") ;If I put this after the require, I get errors (require 'efs); if I put this after all the other definitions I also got errors (setq efs-gateway-host "draco" efs-ftp-local-host-regexp "^[^.]*$") efs-gateway-tmp-name-template "/usr/tmp/ange/ange-ftp" efs-gateway-mounted-dirs-alist '(("/net/draco/home/lna/ange/".
		"/usr/tmp/ange/ange-ftp")) efs-gateway-program "telnet" efs-gateway-program-interactive t efs-make-backup-files '(unix) (cond ((string-equal system-type "irix") (setq efs-gwp-setup-term-command "stty -echo nl -opost\n"))) Then when I do: (find-file "/lna@kodiak:/home/lna/") I got the following: Symbol's definition is void: dired-call-process Actually after the loading efs, even dired has the problem: (find-file "/home/lna/") causes the same error.
		If I do not load efs, dired is OK. As soon as I execute (require 'efs) I get the above message.
	www.hpl.hp.com /personal/ange/archives/archives-95/efs-testers-archive/0129.html (0 words)

	Linuxarkivet: Howto
		They want to be able to boot a system with 10gig of news spread over 4 hard drives with full quotas AFTER a power failure with less than 20 seconds for mounting file systems!
		Efs-mod 0.6 is original EFS read/only module for Linux.
		A C library to read EFS and FFS from WinNT x86, SunOS and IRIX.
	www.linuxarkivet.se /howto/Filesystems-HOWTO/x1544.html (0 words)

	SecurityFocus Bugtraq: RE: Attacking EFS through cached domain logon credentials
		>I have heard of users using EFS on memory drives as long as the drive is...
		It is important to distinguish between a weakness in EFS (there is none,...
		It is not just EFS which is at risk through 'cracking' an account like...
	www.derkeiler.com /Mailing-Lists/securityfocus/bugtraq/2003-01/0207.html (0 words)

	freshmeat.net: Project details for CDfs
		On a 2.4 kernel (redhat 9) and on a 2.6 kernel (SuSe 9.3), while compiling, I had an error that is something like:
		efs: module not supported by Novell, setting U taint flag.
		EFS: device does not support 512 byte blocks
	www.freshmeat.net /projects/cdfs (357 words)

	[ IRIX ] - Documentation of Operating Systems - OSDP
		Thus a basis for Hightech computing and graphic computing was created.
		IRIX is compatible with the UNIX system V Release 4 and is compatible to the standard UNIX 95.
		IRIX is used on special workstations by sgi like the Octane, Onyx, Iris and many other systems.
	www.operating-system.org /betriebssystem/_english/bs-irix.htm (0 words)

	[No title]
		You can compile a library you can link later against your own code; so your program will be able to read disks which use the "old" EFS IRIX format.
		Most IRIX 5.x and earlier disks still use EFS, as well as lots of IRIX install CD-ROMs.
		You will get also a small binary, named "efssh" which should be considered more as an example of how to use the library than as a finished program; but you can find it useful "as is".
	persephone.cps.unizar.es /~spd/README-efs.txt (374 words)

	CVE-2002-1517
		It was reviewed and accepted by the CVE Editorial Board before it was added to CVE.
		fsr_efs in IRIX 6.5 allows local users to conduct unauthorized file activities via a symlink attack, possibly via the.fsrlast file.
		Note: References are provided for the convenience of the reader to help distinguish between CVE entries.
	cve.mitre.org /cgi-bin/cvename.cgi?name=CVE-2002-1517 (0 words)

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