Dovetailed Technologies

Release Notes

Co:Z Toolkit 4.5.0 - July 24, 2017

Co:Z Launcher enhancements:

  • Enhanced the Co:Z Launcher and Co:Z Dataset Pipes server to allow the execution of cozclient commands that must run in a separate OMVS address space.

Co:Z SFTP enhancements:

  • Added a cozsftp append command which uploads a local-path and appends it to the end of a remote file on the remote machine. See cozsftp append in the Command Reference section of the User's Guide for more information.

  • Updated the Co:Z SFTP Server to support clients that send/receive multiple concurrent files.

  • Updated the chkcmd_homdir and chkcmd_dsonly optional user exits to address several issues. See the README files in <COZ_INST>/bin/exits for more information.

  • Added a template cozsftp_server_user_config file to the samples.

  • Added support for: Using SMF type/subtype specific permissions.

Co:Z Dataset Pipes:

Co:Z Target System Toolkit 1.3.0 - July 24, 2017
  • Added z/OS Remote Services durable sessions with the new cozcontrol command. In order to use this new function, the Co:Z Toolkit must be release 4.5.0 or later. Older versions of the Target System Toolkit will continue to work with Co:Z Toolkit 4.5.0.

  • 32 bit executables are no longer available on the website download page. If needed, they can be built from Co:Z Target System Toolkit source code.

Co:Z Toolkit 4.2.0 - January 10, 2017

Co:Z Launcher enhancements and fixes:

  • Fixed a problem in the way data set amrc was being collected. In some cases, useful error information was being lost prior to logging.

Co:Z SFTP enhancements:

  • Added support for the BPXWDYN keywords EXPDL and EXPDT

  • Enhanced the sftp mkdir command so that if it is issued in the data set space it will create a PDS (or PDSE if dsntype=library). The mkdir command will fail if a dataset already exists with the specified name.

  • Fixed the chkcmd_homdir exit so that the Co:Z SFTP error.log can be retrieved.

Co:Z Toolkit 4.1.0 - October 4, 2016

Co:Z SFTP enhancements:

  • A new Co:Z SFTP Server logging option may optionally be configured, enabling redirection of Co:Z SFTP logging output to a SYSOUT spool file. For additional information, see Co:Z SFTP Server logging in the Co:Z SFTP - User's Guide.

  • Two optional CZCHKCMD exit modules have been added:

    • chkcmd_dsonly - restricts remote SFTP clients from accessing posix files. Access to the z/OS dataset and JES space is permitted.

    • chkcmd_homedir - restricts remote SFTP clients to only access files within the user’s home directory. Access to the z/OS dataset and JES space is permitted.

    For additional information, see chkcmd_homedir.README and chkcmd_dsonly.README in the install directory (<COZ_HOME>/bin/exits).

  • A change was made to allow the jesincsysin option to be set with a pattern matching //-jes/nnnnn/ALL. Additionally, the sample cozsftp_server_config file has been updated to define this pattern as follows:

    # The following pattern is recommended to ensure a job log is transfered with the 
    # correct options. The pattern matches the following command:  
    #       get //-jes/nnnnn/ALL joblog.txt
    # The special ALL file name is used to transfer all spool files to a concatenated output file.
    # The jesincsysin option includes SYSIN spool files to the concatenated spool files downloaded. 
    # This option is a convenient way to download all job input and output.
    pattern: //-JES.*.ALL
    mode=text,jesincsysin

Co:Z Toolkit 4.0.0 - July 14, 2016
[Note]Note
Our product support covers the newest release of the Co:Z toolkit software, plus the prior release for nine (9) months after general availability of the next major release. This will be extended for this release by an additional 7 months. This means that support for 2.x.x releases will end on November 14, 2017. The Co:Z release 3.0.0 has been available since November 2014.

Co:Z SFTP enhancements:

  • A new Co:Z SFTP Server timeout option, servertimeout, may optionally be specified to limit how long an inactive client remains connected. See the Co:Z SFTP options Appendix in the Co:Z SFTP - User's Guide for more information.

Co:Z Launcher enhancements:

  • The default values for two key Co:Z Launcher options are changed with this release:

    • server-ports is no longer a required option.

    • ssh-forward-dynamic-port defaults to true.

    The intent of this change is to enable an ephemeral port to be used on z/OS by default, eliminating the need for reserved port ranges. Refer to the documentation in the COZCFGD parmlib member for additional documentation. In order to use this default:

    • the ssh-tunnel option must be set to true (the default)

    • IBM Ported Tools OpenSSH v1.3 or later is required

    • The target ssh server must support dynamic reverse port forwarding (e.g. OpenSSH version 5.3 or later)

    Note: Existing configurations using the server-ports option will continue to function without changes; however, we recommend enabling dynamic port forwarding when tunneling, if possible.

    For additional information, see Co:Z Launcher Properties and Configuration Best Practices.

  • Two new environment variables have been added to enable long running Co:Z Launcher jobs to continue without termination due to inactivity:

    • COZ_SERVER_TCP_KEEPALIVE - If set, interval in seconds Co:Z Server sets the TCP_KEEPALIVE socket option. Note that this setting must be lower than the time that any firewall(s) may time out the connection.

    • COZ_SERVER_KEEPALIVE - If set, interval in seconds Co:Z Server sends a NOOP packet. This option sends out actual data packets at the application level for situations where TCP_KEEPALIVE does not work due to firewall configuration.

Dataset Pipes enhancements and fixes:

  • A new option, -f has been added to the todsn and tofile commands. With the option set, the command will not wait until receiving an entire buffer before writing data to the output data set. This is the default if used with a tunneled socket or if the output is a SYSOUT data set.

Co:Z Batch enhancements:

  • A set of "ssh" sample scripts and a JCL PROC have been added, similar to the "sftp" samples shipped with Co:Z. The ssh_connect.sh script connects an ssh client to a remote system running sshd and prepares it to run commands. The ssh_pubkey.sh sample script connects to a remote system and appends a public key to a user's authorized_keys file.

Co:Z Target System Toolkit 1.2.2 - July 14, 2016
  • Supports the NOOP command sent when the COZ_SERVER_KEEPALIVE environment variable is set on the server. Messages similar to the following are no longer written to the log: todsn-client(nnnnn)[W]: unknown command packet->code=8, len=nnn ignored.

Co:Z Target System Toolkit 1.2.1 - May 20, 2016
  • Fixed a problem where a Co:Z client program (fromsdn, todsn, fromfile, tofile, etc...) could fail to work correctly if one of the standard handles (stdin/stdout/stderr) was closed by the target system prior to its invocation.

  • Improved SIGPIPE error handling and diagnostics in CoZAgent and CoZClient.

Co:Z Toolkit 3.6.3 - May 15, 2016

Co:Z Launcher enhancements and fixes:

  • Added a new property to the Co:Z Launcher: ssh-forward-dynamic-port-wait which can be used to change the amount of time the Launcher will wait for a dynamic port assignment from the target system. The default is 30 seconds, which has been increased from the original wait time of 10 seconds.

  • Increased the time to wait for the Co:Z Launcher to establish the saf-ssh-agent from 5 to 30 seconds. The original wait time was sometimes not sufficient on heavily loaded z/OS systems.

  • Fixed a problem in the way the Co:Z Launcher parsed /etc/init.options, which could in some cases result in an incorrect setting of the timezone used for message timestamps.

Co:Z Toolkit 3.6.2 - (not released - items below are included in all subsequent releases)

Co:Z SFTP enhancements and fixes:

  • Fixed a problem with the Co:Z sftp-server's implementation of posix-rename which could result in an SFTP packet ID mismatch.

Co:Z Launcher enhancements and fixes:

  • Modified the saf-ssh-agent termination process to shutdown more cleanly. This change eliminates unsightly but harmless BPXP023I messages in the job log.

Co:Z Toolkit 3.6.1 - January 25, 2016

Co:Z SFTP enhancements and fixes:

  • In order to prevent a potential recursive logging error, the console notifications function has been updated to disable WTO messages when the Co:Z SFTP server log file has been redirected to /dev/console. Setting SFTP_LOGFILE=/dev/console is not recommended. Refer to Co:Z SFTP Server logging in the Co:Z SFTP User's Guide for additional information.

Co:Z Launcher enhancements and fixes:

  • Fixed a problem with the ssh-forward-dynamic-port option. In the previous release, if this option was not specified, or explicitly set to false, an ephemeral port on z/OS was allocated and this port number was also sent to the target system for its reverse port forwarding port. This release ensures that a port from the supplied port range is used if ssh-forward-dynamic-port=false

Dataset Pipes enhancements and fixes:

  • In order to prevent a potential recursive logging error, the wto command will not write a message when logging has been redirected to /dev/console.

Co:Z Toolkit 3.6.0 - December 8, 2015

Co:Z SFTP enhancements and fixes:

  • Added a feature to optionally write console notifications on command completion. Notifications are written following the call to the Post Processing Exit, if one exists, for the following commands: put, get, rm and rename. Notifications are supported for the Co:Z SFTP client and server. The message format is configured in the sitewide server and client configuration. See the Session config files Appendix in the Co:Z SFTP - User's Guide for more information. Once configured, the notification feature is enabled using the Co:Z SFTP option, notify. See the Co:Z SFTP options Appendix in the Co:Z SFTP - User's Guide for more information. This option can be set globally for all users in the site-wide configuration or can be enabled on a per user basis. This option can also be enabled using file patterns in either the sitewide server/client configuration or user configuration.

  • Enhanced the saf-ssh-agent utility to support more ssh multiple authentication combinations. The saf-ssh-agent utility is used when the -k option is specified on the cozsftp command. This fix also applies to the Co:Z Launcher when the saf-cert property is specified.

  • Fixed a problem where the specification of BPXWDYN keywords on Dataset Allocation might not be built correctly and in some cases, could cause an 0C4 ABEND. This fix also applies to Dataset Pipes.

  • Changed the behavior of the Co:Z Translator when a codepage user technique option is specified (0-9), but the associated custom table is not found. Previously, an Informational level message was written, but this was possible to overlook. The Translator now throws an exception. This fix also applies to Dataset Pipes.

Co:Z Launcher enhancements and fixes:

  • Enhanced the ssh-forward-dynamic-port option to use an ephemeral port on z/OS. Now, when this option is set to true, reserved port ranges on z/OS are no longer required.

  • Modified the Co:Z Launcher to work around a race condition in the z/OS Unix System Services socket listen() call. Under this race condition, two Co:Z Server processes could to bind and listen on the same localhost:port pair.

Co:Z Toolkit 3.5.1 - October 9, 2015

This release makes the following minor changes to the 3.5.0 (Beta) release, and is no longer considered "Beta".

Co:Z SFTP enhancements and fixes:

  • Changed a dataset write seek error message to warning

  • Fixed a problem in the cozsftp client preventing the listing of a symbolic link for a directory target.

  • Fixed a problem where log messages generated by setting the interimlogging option were incorrectly written on completion of commands that did not result in a transfer.

Co:Z Toolkit 3.5.0 (Beta) - July 7, 2015

Note: We recommend that you use this release if you are evaluating or testing Co:Z outside of a production environment. We expect to provide production support for this release level within 60 days. If you are a commercial customer and have specific support requirements, please contact us.

Co:Z SFTP enhancements and fixes:

  • SFTP base upgraded from OpenSSH 5.0p1 to 6.4p1 adding the following:

    • recursive file transfer in a directory tree (get/put -r)

    • sftp server read-only mode

    • sftp “df” command - displays file system attributes

    • improved performance of directory listings

    • “ls -h” option - human readable file attribute units

  • OpenSSH 6.4 changes sftp so that non-error messages are not printed to stdout if running a batch file (-b). In effect, the -q (quiet mode) option is turned on with -b and cannot be turned off. This has been changed so that -b does not force -q. The -q option can be specified in addition to -b.

  • Fixed rename and remove to write an SMF record when the check command exit rejects the user's request.

  • Fixed the status code reported when "no file or directory" was the cause of error. Status code 552 is now reported rather than 550 in these cases.

  • Added manpages for the cozsftp and sftp-server commands. See the Command Reference in the Co:Z SFTP User's Guide.

Co:Z Toolkit 3.1.2 - August 13, 2015

Co:Z Launcher fixes:

  • Fixed a problem occurring with ssh-forward-dynamic-port set to true. There were some scenarios where pthread_cond_timedwait was called with an invalid time argument.

Co:Z Toolkit 3.1.1 - July 6, 2015

Co:Z SFTP enhancements and fixes:

  • Fixed a problem where an ls command issued from cozsftp could encounter an error, but not cause a non-zero return code to be set.

  • Changed the logging level of the message that reports a failure to read a Co:Z SFTP config file (either cozsftp_config or cozsftp_server_config) from warning to informational.

Co:Z Toolkit 3.1.0 - May 1, 2015

Co:Z SFTP enhancements and fixes:

  • Added "false" statements to the beginning of sftp-server.sh and cozsftp shell scripts. This is a workaround suggested by IBM so that shell scripts do not silently fail with exitCode=0 when a fork/spawn error occurs.

Co:Z Launcher enhancements and fixes:

  • Fixed a problem where a Co:Z Dataset Pipes command from the target system caused a network reset during very large transfers. Both the Co:Z server version 3.1.0 and the target system toolkit version 1.2.0 updates are required for this fix. These can be installed and run in any order, but both need to be installed in order to see the fix.

Co:Z Target System Toolkit 1.2.0 - May 1, 2015
  • Fixed a problem where a Co:Z Dataset Pipes command from the target system caused a network reset during very large transfers. Both the Co:Z server version 3.1.0 and the target system toolkit version 1.2.0 updates are required for this fix. These can be installed and run in any order, but both need to be installed in order to see the fix.

Co:Z Toolkit 3.0.1 - March 16, 2015

Co:Z SFTP enhancements and fixes:

  • Fixed a problem where a system symbol in the VOLSER of a data set's catalog entry failed to be resolved, causing the data set to not be usable by Co:Z.

  • Fixed a problem where the number of bytes transferred was incorrectly reported in SMF records on an unsuccessful file transfer. This error only occurred when a write error was detected on the first write to a dataset

  • Added a new informational log message listing the options in effect for a transfer. While this information was available with debug logging in prior releases, many customers do not have debug logging enabled in production. This new message will improve our ability to address common transfer questions. The following is an example message (note that the asterisk indicates a setting from a matching pattern that overrides a current setting):

    ZosSettings[I]: Transfer options: clientcp=ISO8859-1,*conddisp=catlg[catlg],*lrecl=62,*mode=text[binary], *recfm=fb,servercp=IBM-1047,trim

  • Added support to automatically convert ISO-8859-nn to ISO8859-nn because z/OS does not support the format, ISO-8859-nn, which contains two dash characters.

  • Several Translate Exception error log messages have been updated to report reason codes as hex rather than decimal.

  • Added HEAP=,,ANYWHERE to the Co:Z SFTP client option ssh-le-options in the sample cozsftp_config. 'ANYWHERE' is the IBM default, and this setting will prevent failures if a customer were to override this default in PARMLIB.

Co:Z Launcher enhancements and fixes:

  • Added a new optional property, ssh-forward-dynamic-port, that allows the target ssh server to dynamically assign the target port. In order to enable this option, IBM Ported Tools OpenSSH v1.3 or higher is required and the ssh-tunnel option must be set to true.

  • Updated the sample COZCFGD member, setting an additional environment variable: server-env-COZ_TRSUB_ANSI_X3.4-1968=ISO8859-1. This eliminates cozagent warnings stating that "ANSI_X3.4-1968" is not a codepage recognized by z/OS.

  • Added HEAP=,,ANYWHERE to the sample COZCFGD ssh-le-options setting. 'ANYWHERE' is the IBM default, and this setting will prevent failures if a customer were to override this default in PARMLIB.

  • Fixed a problem where an 0C4 ABEND could occur when using the properties exit to set a new property rather than overriding an existing property.

Co:Z Target System Toolkit 1.1.4 - March 16, 2015
  • Minor changes to package structure.

Co:Z Target System Toolkit 1.1.3 - November 14, 2014 (not released - items below are included in all subsequent releases)
  • Added a new cozagent option, -n, which runs the target-command without a shell.

Co:Z Toolkit 3.0.0 - December 12, 2014 - Correction
  • The original release notes incorrectly listed the minimum machine architecture. This has been corrected in the original 3.0.0 release notes below. Community license users running machine architectures lower than z9 or a z/OS release lower than 1.12 should use release 2.4.5. See the Co:Z downloads page to download this older release. Commercial support customers that do not meet these requirements should contact us for custom build information.

Co:Z Toolkit 3.0.0 - November 12, 2014
[Note]Note
Our product support covers the newest release of the Co:Z toolkit software, plus the prior release for nine (9) months after general availability of the next major release. This means that support for 1.x.x releases will end on September 12, 2015. The Co:Z release 2.0.1 has been available since January 2012.

Co:Z SFTP enhancements and fixes:

  • Modernized compiler TARGET,ARCHITECHTURE and TUNE settings. In order to run this release of Co:Z, a minimum z/OS release 1.12 is required, along with a minimum machine architecture of z9 and above. Commercial support customers that do not meet these requirements should contact us for custom build information.

  • The sftp-server binary is now built with the AC=1 link option in order to make it easier for customers that require the Co:Z server to be APF-authorized for their exits. In order to run APF-authorized, the extattr +a sftp-server command must be executed after installing this release.

  • Enhanced the smf option to support an optional parameter that identifies which user exit is called when an SMF record is written: IEFU84 or IEFU83. If no parameter is provided the default is IEFU84 (as in the prior release).

    [Note]Note
    Migration consideration: If the customer has modified Co:Z SFTP server to be APF-authorized, then the IEFU83 exit is required. The site wide configuration must be updated to include smf=u83.

  • Added a new linerule option, L4. When transferring binary files with this option, each record is delimited (preceded) by a four byte length of the record that follows. See the Co:Z SFTP options Appendix in the Co:Z SFTP - User's Guide for more information.

  • Enhanced error logging for the TranslateException message capturing the offset of the last successfully translated byte.

    The following is an example message showing that an error occurred writing a text file to a dataset with different client and server code pages:

    ZosDataset[E]: TranslateException: Exception occurred during translation, RC=4, Reason=0xc, input offset=10250005

    The following is a variant of this message reported by the fromdsn command:

    fromdsn(HLQ.TEST.DATA)[E]: caught TranslateException: Exception occurred during translation, RC=4, Reason=0xc, record/offset=13/7

  • Added support for logging interim (in-flight) file transfer records to the Co:Z log and/or real-time SMF Interface (only). Co:Z SFTP supports real-time SMF type 119 records that are compatible with the following IBM FTP records:

    • Subtype 100 - FTP server transfer initialization record

    • Subtype 101 - FTP client transfer initialization record

    In addition to the standard real-time FTP initialization records, Co:Z SFTP creates the following real-time SMF 119 record subtypes:

    • Subtype 194 - Co:Z SFTP server interim transfer record

    • Subtype 195 - Co:Z SFTP client interim transfer record

    This feature is enabled by the new interimlogging option.

    See the Co:Z SFTP options Appendix and the SMF Information Appendix in the Co:Z SFTP - User's Guide for more information.

  • Updated the sample C++ program, CoZSmfServer.C, to output a text summary of each SMF record received on a Unix datagram socket. This sample demonstrates how to use the Real-Time Co:Z SMF Interface. See the SMF Information Appendix in the Co:Z SFTP - User's Guide for more information.

  • Corrected the following two environment variables in documentation and the sample site cozsftp_client.rc file:

    • COZ_SFTP_USER_CLIENT_CONFIG -> COZ_SFTP_USER_CONFIG

    • COZ_SFTP_USER_CLIENT_RC -> COZ_SFTP_USER_RC

    See Configuring the Co:Z SFTP Client in the Co:Z SFTP - User's Guide for more information.

Co:Z Launcher enhancements and fixes:

  • Added additional debugging information to the saf-ssh-agent.

Co:Z Toolkit 2.4.5 - May 29, 2014
[Note]Note

This is planned to be the last 2.x release of the Co:Z Toolkit. Barring any high severity defect fixes, the next release of the toolkit will be labeled 3.0.0

Co:Z SFTP enhancements and fixes:

  • Fixed a bug introduced in 2.4.0 by a new feature enabling wild-card uploading to new generations of a GDG when the gdgnt option is enabled. Co:Z server was responding to realpath with the GDG base filename only, dropping the new version indicator of (+1). Some clients, such as PSFTP, require the returned path to contain (+1) in order for the subsequent open request to work.

Co:Z Launcher enhancements and fixes:

  • Fixed a timing issue that was causing port forwarding failures in scenarios where several Co:Z Launcher jobs were running concurrently (or close together).

Co:Z Toolkit 2.4.4 - March 18, 2014

Co:Z Installation:

  • A new IBM Ported Tools OpenSSH - Quick Install Guide is available. This guide will help you ensure your IBM Ported Tools OpenSSH installation is configured and tuned properly. For more information see: IBM Ported Tools OpenSSH - Quick Install Guide.

Co:Z SFTP enhancements and fixes:

  • Added an informational message to cozsftp and sftp-server to record the remote and local IP addresses. This message is emitted once per session.

  • Modified read_password_dsn.sh to ignore new password prompts like "user@host's new password: " This is to prevent an endless loop calling this script for old/new password changes. To disable this filter, export SSH_ASKPASS_PROMPT_IGNORE=false

  • Added the SFTP_LOGDIR environment variable which allows configuration of the directory name (without trailing slash) where log files will be created, rather than /tmp or $TMPDIR. This variable is ignored if SFTP_LOGFILE is set.

  • Fixed GDGNT support to pass the BPXWDYN GDGNT keyword on all allocations for read and write operations. In prior releases, GDGNT was only passed when creating new generations. This had the potential to cause some read operations to retrieve the wrong generation when GDGNT was set.

  • Fixed a problem with translate table support where multiple simultaneous access to the translate table dataset might result in a DATA SET <dsn> ALREADY IN USE error.

  • Fixed the FTP command passed to the CHKCMD exit when ls /+nogdgnt is executed. In prior releases, SITE SFTP-GDGNT was passed rather than SITE SFTP-NOGDGNT. Refer to the Co:Z SFTP Exits Guide for additional corrections to the documentation.

  • Fixed a problem where the exit status code was not set correctly when a dataset write error occurred getting a very small file using the Co:Z SFTP client. This change addresses an issue running cozsftp from COZBATCH where the exitcode was not set to 1 when a dataset write error occurred.

  • Changed SFTP Server to always treat a dataset name with a trailing slash (/) as a directory.

  • Fixed a problem that occurs when using GUI clients to put a file C in directory (folder) //HLQ.A.B when //HLQ.A.B is an existing sequential dataset. The GUI client sends //HLQ.A.B/C causing the Co:Z SFTP Server to overwrite the existing sequential dataset //HLQ.A.B with the contents of file C. This problem was occurring due to a misinterpretation of the slash (/) in the path by the Co:Z SFTP Server. The error does not occur when the path contains a period (.) in place of the slash (/). This problem was originally reported with release 2.3.2.

  • Added a Microsoft Windows 64 bit version of the Co:Z Target System Toolkit. This is for use with the Cygwin 64 bit version.

Dataset Pipes enhancements and fixes:

  • Changed todsn behavior: if -b is specified with -l (except -l none), then -w wrap is made the default. This allows commands such as todsn -b -l rdw to work as generally expected.

Co:Z Toolkit 2.4.3 - December 2, 2013

Co:Z SFTP enhancements and fixes:

  • Fixed the server-path passed to the CZCHKCMD exit on a wild-card put to a GDG with the gdgnt option enabled.

Co:Z Batch enhancements and fixes:

  • For z/OS 2.1 or later, JES Symbols are automatically exported as environment variables to the target shell or program with JES_ prefixes on the symbol names. See an example in the Co:Z Batch User's Guide.

Dataset Pipes enhancements and fixes:

  • For z/OS 2.1 or later, the jessym command is available, a command line interface to the JES Symbol Service. See the jessym section of the Co:Z Dataset Pipes Command Reference for more information.

  • Added a new option, -i jobid, to the lsjes command which displays a single line listing for the specified job. See the lsjes section of the Co:Z Dataset Pipes Command Reference for more information.

  • Modified todsn to add support for the special dataset-name //INTRDR. If specified, the system internal reader is automatically allocated with a default RECFM=F and LRECL=80. Additionally, the new pseudo BPXWDYN option symlist() may be specified in order to pass one, or more JES system symbols to the internal reader. See the example in the Co:Z Dataset Pipes Command Reference.

Co:Z Launcher enhancements and fixes:

  • Fixed a bug in the automatic buffer size increase feature introduced in version 2.3.1. Larger send and receive buffers will now be used in all cases unless otherwise specified.

Co:Z Toolkit 2.4.2 - July 12, 2013 (not released - items below are included in all subsequent releases)

Co:Z SFTP enhancements and fixes:

  • Added a feature to allow the user versions of cozsftp_config and cozsftp_server_config files to have a default: section. In prior versions, the default: section was only allowed in the site versions of these files. If the same option name is specified in both the site and user config files, then the option value in the user config file has precedence.

Co:Z Launcher enhancements and fixes:

  • Added a feature where code page translation exceptions are relaxed when writing to a printer, terminal or DUMMY DD. Prior to this release, if the source codepage had an invalid sequence, a translation exception would be thrown terminating the Launcher process. Now a substitution character is written and the process continues. The behavior is unchanged when writing to anything other than a printer, terminal or DUMMY dd (e.g. regular datasets).

  • Fixed a problem with code page translation via iconv where some Unicode Services error codes were being ignored.

Co:Z Toolkit 2.4.1 - June 24, 2013

Co:Z SFTP enhancements and fixes:

  • Fixed a problem where an 0C4 ABEND could occur after issuing an "ls" command in the dataset space that returned more than 512 entries. This is an issue that was introduced in release 2.2.0.

Co:Z Toolkit 2.4.0 - June 10, 2013

Co:Z SFTP enhancements and fixes:

  • Added a feature to override the location of the user level Co:Z configuration files sftp-server.rc, cozsftp_client.rc, cozsftp_server_config and cozsftp_config. This feature is particularly useful if individual SFTP users do not have Unix System Services home directories. For details please refer to the following sections of the SFTP User's Guide:

  • Enhancements to improve the ability to distinguish whether a non-existent data set name is to refer to a new data set or an existing (pseudo) directory. As before and by default, a non-existent data set name is reported as a "directory" if other data sets exist at lower levels.

    • Added a new option: maxdsndirlevels, which can be used to specify the maximum number of levels that a data set name can have before it is always considered as a new file rather than a (pseudo) directory.

    • The '!' character may now be specified anywhere in a data set name to force a non-existent data set name to be considered as a file rather than a directory.

    See: Dataset Name Determination Co:Z SFTP - User's Guide for more information.

  • When downloading compressed datasets on EAV volumes with a remote SFTP client, Co:Z SFTP server will now use catalog information to provide a better estimate of the uncompressed data set size. In some cases this may significantly improve the performance of downloading these data sets, since many SFTP clients will only queue one read at a time after the estimated file size has been reached. This feature is only available on z/OS 1.12 or later systems

  • Corrected error handling for an invalid sequence detected during conversion from UTF-8 to IBM-1047 on a put to a data set.

  • cozsftp client get command wild-card enhancements:

    • Allow get * //DD:MYDD if the given DD was allocated with DISP=MOD.

    • Allow get * //HLQ.GDG.BASE(+1) if the gdgnt option is enabled.

    • As with all wild-card get commands, filtering of source files (e.g. get abc*) is supported.

  • cozsftp client put command wild-card enhancements and fixes:

    • Allow put //HLQ.GDG.BASE(*) <dir> - to upload all generations to a remote directory.
      For compatibility, put //HLQ.GDG.BASE.* is also supported.

    • Allow put //HLQ.PDS(*) <dir> - to upload all members of a PDS to a remote directory.

      Note: Previously, the command: put //HLQ.PDS <dir> would also work, but the target directory was ignored and all files were written to the current working directory. This has been corrected.
      The preferred syntax is: put //HLQ.PDS(*) <dir>

    • Fixed an problem where put //HLQ.DSN targetdir failed.
      The put command will now upload the data set to "targetdir/hlq.dsn". If the target is a z/OS data set name, then that data set name will be used as the target.

    • Filtering of members is not currently supported when uploading a PDS or GDG. Only a single member or the "*" pattern is allowed.

  • Co:Z SFTP server enhancements and fixes:

    • Allow wild-card uploading to new generations of a GDG. If the gdgnt option is enabled, then a remote client may upload multiple files/generations with: put abc* //HLQ.GDG(+1)

    • Fixed an issue where download of a specific GDG G000V00 failed with error: "Cannot download non-regular file".

  • Addendum to Co:Z Toolkit 2.3.2 release notes:

    • In release 2.3.2, fixed a timing issue causing occasional failures when retrieving spool files for a job submitted using Co:Z. These failures were occurring even with the jesjobwait option set which ensures that Co:Z SFTP server wait until the job completes before listing or transferring the jobs spool files.

SFTP Sample Scripts enhancements:

  • Changed scripts to ensure that a zero exit code does not result if the z/OS UNIX shell is unable to fork a new process.

Co:Z Launcher enhancements and fixes:

  • Fixed a zero-return code bug from launcher if the agent process failed to run.

  • Fixed (again) ssh process time message to appear only as a debug level message. Addresses unwanted ICH408I audit messages for some installations.

Co:Z Toolkit 2.3.2 - March 21, 2013

Co:Z SFTP enhancements and fixes:

  • A new option, jesincsysin, is available for transferring JES spool files. When this option is enabled, spool file listings and concatenated output will contain SYSIN spool files, including JESJCLIN. Refer to Transferring JES spool files in the Co:Z SFTP - User's Guide for an example.

  • Added an appendix, Creating a Custom Unicode Table from the IBM FTP Translate Table, to the Co:Z SFTP User's Guide. The appendix provides condensed instructions for creating a custom unicode table which can be used by the Co:Z SFTP clientcp, servercp and technique transfer options. Refer to IBM's Unicode Services User's Guide and Reference (SA22-7649) for complete information on the IBM supported method for adding new conversion tables to Unicode Services.

  • Increased the saf-ssh-agent wait time to a maximum of 5 seconds (from 2 seconds). This wait time is related to the cozsftp -k option (SAF key authentication)

  • Fixed a problem where the cozsftp put command could fail but not set the exit code appropriately.

  • Fixed a problem where the default: section of cozsftp_server_config could be ignored if the final pattern: section in the file was skipped.

  • Fixed a timing issue causing occasional failures when retrieving spool files for a job submitted using Co:Z. These failures were occurring even with the jesjobwait option set which ensures that Co:Z SFTP server wait until the job completes before listing or transferring the jobs spool files.

Dataset Pipes enhancements and fixes:

  • A new option, -S, is available on the lsjes command. The lsjes command is used to display JES job and spool file status. When the -S option is specified, the listing of spool files will also include SYSIN files, including JESJCLIN. Refer to the Command Reference for additional information.

Co:Z Target System Toolkit 1.1.2 - March 21, 2013

  • Fixed an issue in a build from source for Solaris. On Solaris, the Co:Z Agent was terminating early resulting in a SIGINT when using fromdsn/todsn and fromfile/tofile. This issue was related to the way Solaris handles timer signals.

Co:Z Target System Toolkit 1.1.1 - January 24, 2013 (not released - items below are included in all subsequent releases)

  • Fixed an issue with the LSB package for s390x (System z Linux) where an installation error could occur if attempting to install on an earlier generation distribution than the one used to build the LSB RPM.

Co:Z Toolkit 2.3.1 - January 3, 2013 (not released - items below are included in all subsequent releases)

Co:Z Launcher enhancements and fixes:

  • Changed the default send and receive buffers from 16K to 180K. These default values can be modified in COZCFG DD as follows:

    server-env-COZ_SERVER_SNDBUF=184320
    server-env-COZ_SERVER_RCVBUF=184320

    The SNDBUF is used when fromdsn/fromfile is called from the target system; the RCVBUF is used when todsn/tofile is called.

    Additional performance improvement may be achieved on z/OS r1.13 or later by using IBM's INET_FASTPATH feature. To activate this, add the following to your COZCFG DD:

    server-env-_BPXK_INET_FASTPATH=*

Co:Z Toolkit 2.3.0 - December 18, 2012

Co:Z SFTP enhancements and fixes:

  • Added option unixls. When enabled, Co:Z SFTP server returns a Unix format listing of data sets to the client. Many clients incorrectly depend on this listing format in order to function correctly. This option is not enabled by default. Refer to the following sections of the Co:Z SFTP User's Guide for additional information:

  • Updated support for the SFTP_ZOS_INITIAL_DIR environment variable which can be used to override the home directory on the server. When set to //, the user's z/OS top level qualifier is used. As part of the enhancements in this release related to SFTP client compatibility, the string /-/ is also recognized, setting the initial directory to the user's z/OS top level qualifier prefixed with /-/.

  • Fixed a problem where the directory attribute was not set correctly when listing //-JES output. This change improves the usability of SFTP GUI clients when navigating JES spool files.

  • Fixed a problem in PDS directory listings (issued by the pdsdir command and Co:Z SFTP PDS 'ls' commands) where the modified date was incorrectly displayed when the date was equal to the last day of the month.

  • Fixed a problem in the sftp_connect.sh shell script (used by sftp_get.sh and sftp_put.sh) where userids beginning with a "$" were not being used correctly. These scripts are located in $COZ_HOME/samples/sftp_batch.

  • Changed the level of the child SSH process times log message from (I)nfo to (D)ebug.

  • Added support for FTP style translate tables when transferring files. The new option trtab can be specified in lieu of servercp and clientcp. See the Co:Z SFTP General Transfer Options for details.

Dataset Pipes enhancements and fixes:

  • Added support for FTP style translate tables to fromdsn, fromfile, todsn and tofile. A translate table is specified via the -T option on these commands in liu of the -s (source code page) and -t (target code page) options. See the Dataset Pipes Command Reference for details.

Co:Z Launcher enhancements and fixes:

  • Changed the level of the child SSH process times log message from (I)nfo to (D)ebug.

Co:Z Toolkit 2.2.1 - October 16, 2012

Co:Z SFTP enhancements and fixes:

  • Updated the sample sftp_connect script to export the following two variables: _BPX_SHAREAS=YES and _BPX_SPAWN_SCRIPT=YES. This avoids problems that can happen when a user or installation login profile sets _BPX_SHAREAS=NO. Please update scripts that have been modeled after the sample Co:Z Batch SFTP scripts distributed with the Co:Z Toolkit.

  • Fixed an error (0C4 abend) occurring with SMF enabled and Co:Z SFTP encountering an error writing SMF records. The error was occurring when Co:Z SFTP logged an error message about the SMF write failure.

  • Improved the storage allocation algorithm to better support listing (ls) of very big directories (several hundred thousand files). Depending on the configuration of LE HEAP runtime options, Co:Z SFTP was running out of LE HEAP storage with a "xrealloc() error".

  • Fixed a problem where SFTP readlink processing was failing when working with the z/OS settings directory.

  • Fixed a problem where the Co:Z SFTP server error.log could not be transferred in some cases.

  • Updated initial directory processing to support a high level data set qualifier with no allocated data sets. This change provides a fix for some SFTP clients that failed to connect when the initial remote directory was //userid and the userid did not have any data sets.

  • Updated the Using the Co:Z SFTP client in batch section of the Co:Z SFTP User's Guide. The changes describe the recommend way of using Co:Z SFTP with Co:Z Batch. The SFTPPROC and batch scripts, provided as samples with Co:Z SFTP, simplify and improve the maintainability of Co:Z SFTP batch jobs.

Co:Z Launcher enhancements and fixes:

  • Cleaned up authorization token generation and fixed a problem where the generated authorization token was not being properly verified in some cases.

Co:Z Batch enhancements and fixes:

  • Fixed a problem where an 0C4 abend occurred when the SAVEARGS DD was defined as a DUMMY device and environment variables were also defined as parameters to Co:Z Batch.

Co:Z Toolkit 2.2.0 - September 1, 2012

Co:Z SFTP enhancements and fixes:

  • Fixed a problem where MicroFocus style RDW record lengths (fromdsn and todsn "mfrdw" line separator option) were being calculated incorrectly.

  • Fixed a problem where submitting a job to the internal reader failed if the lrecl and/or recfm options were set. Job submission relies solely on the values (or default settings) of jeslrecl, jesrecfm and jesblksize (which is a new option added in this release). All other BPXWDYN options are ignored.

  • Fixed a problem where the values accepted for dataclas, mgmtclas and storclas were too restrictive. The change allows any alpha or national as the first character and any alphanumeric or national as characters 2-8.

  • Fixed a problem where a member might not be selected on a get command when the current directory is a PDS and another dataset exists whose name is pdsname.member.

  • Increased the performance of dataset name lookups in some cases.

  • Updated the following section of the Co:Z SFTP User's Guide: Client Authentication Mechanisms.

Co:Z Launcher User's Guide significant updates:

Co:Z Toolkit 2.1.3 - July 20, 2012 (not released - items below are included in all subsequent releases)

Co:Z SFTP enhancements and fixes:

  • Changed the cozsftp client to report an error if it is run in batch mode (via the -b switch) and no commands are found on STDIN. This fix is intended to work around an issue with IBM's handling of shell "here documents" when no temp space is available.

  • Changed log message to report the actual, rather than relative name when a GDG is written.

  • Added z/OS support for the SFTP fstat and fsetstat functions. Previously, only stat/lstat and setstat were supported.

Co:Z Toolkit 2.1.2 - July 12, 2012 (not released - items below are included in all subsequent releases)

Co:Z SFTP enhancements and fixes:

  • Added the option maxcscnt to provide a way to increase/decrease the number of CatalogSearch entries returned for a given dataset level search. The default is 2000.

  • Fixed a problem in file pattern matching related to data set names: The DSN pattern is now automatically folded to uppercase and patterns without a // prefix are ignored.

  • Added an informational level message to report the amount of time spent in the child SSH process.

Co:Z Toolkit 2.1.1 - March 16, 2012

This release makes the following enhancements and fixes:

  • Added two new dspipes commands fromfile and tofile. See the Co:Z user's guide for more information.

  • Added the -x option to the catsearch which sets the exit code based on the number of entries found: (0=no entries, 1=one entry, 2=more than one entry).

  • Changed the saf-ssh-agent utility to respect digital certificate expiration. Note that this change may cause existing Co:Z programs to fail if the certificates used for authentication have expired. The old behavior can be retained by setting the environment variable COZ_STRICT_CERT_CHECK=false. The default is true.

  • Added a man page has been added for the cozclient command.

  • Extended the use of the technique option (for Unicode Services codepage translation) to the dataset pipes commands fromdsn, fromfile, todsn, and tofile. The technique option was added to Co:Z SFTP in release 1.10.0

  • Added pattern-get: and pattern-put: sections to the config files to provide directional control over file transfer.

  • Fixed a problem where ssh-socket-info might not run correctly when called from COZBATCH. A workaround (for the previous release) is to export _BPX_SHAREAS=YES to your script or profile.

  • Fixed a problem where config file patterns were not always matching PDS member names correctly.

  • Modified the Co:Z SFTP server subsystem sftp-server.sh script to export _BPXK_JOBLOG=STDERR which provides additional logging information when certain errors occur.

  • Changed the sftp_batch sample scripts (sftp_connect.sh, sftp_get.sh, sftp_put.sh, etc.) to export LC_ALL=C to ensure proper shell script and C runtime library behavior. Please note that this change will cause the default client code page (for cozsftp) and server code page (for sftp-server) to the z/OS platform default of IBM-1047. To set a different default codepage for file transfers, place the desired codepage in the default: section of cozsftp_config and/or cozsftp_server_config files respectively. See the "Session Config Files" appendix of the SFTP user's guide for more information.

  • Changed the sftp_opts settings in the SFTPIND sample JCL member to set defaults for ConnectTimeout and ServerAliveInterval

Co:Z Target System Toolkit 1.1.0 - March 16, 2012

This release makes the following enhancements and fixes:

  • Added remote support for the new dspipes fromfile and tofile commands. Note: To use these commands, the Co:Z Toolkit for z/OS version 2.1.1 or later must be installed.

  • Added new local command toasa which converts POSIX files to ASA carriage control format. This command is useful for converting files with ASCII form feed characters into a dataset RECFM=A format.

  • Fixed a problem where logging is not properly set up when using the COZ_SSH_OPTS environment variable in place of the -ssh command line option.

Co:Z Toolkit 2.1.0 - January 24, 2012

This release makes the following enhancements and fixes:

  • Added two new dspipes commands fromfile and tofile. See the user's guide for more information.

  • Changed the Co:Z Launcher to allow different DD names for SYSOUT (Co:Z Log messages) and SYSPRINT (Co:Z Agent output). In the new sample JCL (COZPROC), these are now named COZLOG and COZOUT respectively.

Co:Z Toolkit 2.0.1 - January 14, 2012

This release makes the following minor changes to the 2.0.0 (Beta) release, and is no longer considered "Beta".

  • Fixed a problem in Co:Z SFTP JES support - jobs submitted to //-JES.INTRDR may now be listed after they are submitted.

  • Corrected an issue in Co:Z SFTP where writing to a z/OS dataset using a source file with a line longer than 128K would fail with an error "InputBuffer will not hold xxxxx bytes of new data".

  • Enhanced the sample sftp_batch scripts to support SAF keyrings with private keys stored in hardware. See the comments in sample/scripts/sftp_batch/sftp_connect.sh for more information.

Co:Z Toolkit 2.0.0 (Beta) - December 1, 2011

Note: We recommend that you use this release if you are evaluating or testing Co:Z outside of a production environment. We expect to provide production support for this release level within 60 days. If you are a commercial customer and have specific support requirements, please contact us. This release makes the following enhancements and fixes:

  • Extended Access Volume (EAV) support has been added to Co:Z SFTP.

  • Enhanced the Co:Z SFTP client and server to write log message records (INFO level and above) to SMF 119, using new subtypes 192 (client) and 193 (server).

  • Added a utility program ssh-socket-info which is invoked by the Co:Z SFTP client to get more accurate socket information for SMF records. This program uses the IBM EZBNMIFR network management API, which requires the ssh-socket-info program to be APF authorized. The Co:Z installer will attempt to set the "+a" extattr bit on this program, but will only succeed if the installing userid has READ access to the BPX.FILEATTR.APF SAF resource. If for some reason, this program is not APF authorized, Co:Z SFTP will operate properly, but the SMF socket information is not guaranteed to be accurate.

  • Support for hex pad characters has been added to Co:Z SFTP.

  • Changed the catsearch utility to automatically show user catalog entries. Added an option (-e) to allow for a custom selection of entry types.

Co:Z Toolkit 1.10.1 - November 7, 2011

This release makes the following enhancements and fixes:

  • The Co:Z Launcher now makes the SYSIN DD available for application use.

  • Added several sample shell scripts and JCL to simplify the use of cozsftp in batch jobs. See the $COZHOME/sample/scripts/sftp_batch and the new SFTPPROC, SFTPIND, and SFTPSAMP JCL members in the installation's SAMPJCL PDS.

  • Changed the Co:Z SFTP server to provide FTP style confidence indicator in the CZPOSTPR exit.

  • Fixed a problem in the cozsftp shell script where command line arguments were not being transparently passed to the Co:Z SFTP client. This problem could affect the use of the -oIdentityKeyRingLabel option, which requires quoting. This bug was introduced in release 1.9.0. Contact us if you would like a local fix for releases 1.9.0 through 1.10.0.

  • Fixed a problem where BPXWDYN dataset options were not being properly overridden when associated with a file pattern.

  • Fixed a problem in dataset code where a read error might not be detected.

  • The LOGNAME feature introduced in the previous release was not working properly. This has been fixed.

Co:Z Toolkit 1.10.0 - September 15, 2011

This release makes the following enhancements and fixes:

  • Added a feature to Co:Z SFTP that allows file transfer settings to be associated with POSIX filename and z/OS Dataset patterns. See the updated Co:Z SFTP documentation for details

  • Added the technique option to Co:Z SFTP. This option is used to specify the Unicode System Services Technique used when translating between the client and server codepages

  • Co:Z Batch now automatically sets the LOGNAME environment variable to the current z/OS userid. This is in addition to the existing behavior of setting the HOME environment variable to the current user's home directory.

  • Co:Z Launcher now automatically sets the LOGNAME and HOME environment variables.

  • The pdsdir command has been enhanced (via the -n option) to display only member names.

  • Fixed a problem with dataset pipes handling of hex character line terminators (0xnnnn).

  • Fixed a problem with cozsftp where a non latin locale caused the client to not work properly.

  • Added the sample program CoZSmfServer which demonstrates how SMF records may be received in real time from Co:Z client and server. See the documentation and build instructions in $COZ_HOME/samples/smfapi/CoZSmfServer.C

Co:Z Target System Toolkit 1.0.14 - June 7, 2011

Enhanced Co:Z Agent to track the parent sshd process and detect if it has terminated abnormally (e.g. due to the Job Step being cancelled by the operator). If this condition is detected, the Co:Z Agent will terminate its process group, which will prevent orphaned processes from continuing to run on the target system.

Co:Z Toolkit 1.9.0 - May 16, 2011

This release makes the following enhancements and fixes:

  • Co:Z SFTP now returns the "last referred date" (midnight) from the VTOC for datasets as last changed time. While not accurate, this is a reasonable substitute and better than the base UNIX epoch date of 1969-12-31

  • The cozsftp command is now a shell script. The executable has been renamed to cozsftp_cmd. This should be a transparent change to existing jobs. However, it adds a new capability to allow customization of the cozsftp command line arguments. See cozsftp_client.rc for more information.

  • Fixed a problem with long (>256) character unix file paths in Co:Z SFTP

  • Cleaned up formatting of long dataset name listings in Co:Z SFTP

  • Fixed a problem where disp=mod was incorrectly being added to bpxwdyn allocations of new datatsets in Co:Z SFTP

  • Fixed a problem with the -p option on the get subcommand of cozsftp.

  • Added subcommands ascii and binary to cozsftp. These operate as synonyms to the option settings lzopts mode=text and lzopts mode=binary respectively.

  • Added a new option -N to COZBATCH to respect digits in columns 73-80 in STDIN rather than stripping them out, which is the default behavior.

Co:Z Toolkit 1.8.0 - February 3, 2011

This release makes the following enhancements and fixes:

  • A new Co:Z SFTP client option ssh-le-options can be used to set LE options for IBM Ported Tools OpenSSH. This option can be set in /etc/ssh/cozsftp_config to simplify the process of implementing IBM APAR OA34819.

  • The ssh-le-options settings in the sample configuration files for both Co:Z Launcher and the Co:Z SFTP client were updated to reflect IBM APAR OA34819.

  • A new configuration opton properties-exit was added to the Co:Z Launcher which allows properties to be dynamically provided by a user-supplied exit program or script.T

  • Fixed a bug in Co:Z SFTP that can cause an 0C4 when querying JES spool jobs using a jobname or owner longer than 8 characters.

  • Fixed a bug in Co:Z SFTP that caused the "mode=text" setting to be treated as binary if "mode=TEXT" was given.

Co:Z Toolkit 1.7.8 - January 17, 2011

This release fixes a potential OC4 exception when the 'noreplace' option is used.

Co:Z Toolkit 1.7.7 - January 14, 2011

This release fixes several problems:

  • In Co:Z SFTP, listing dataset levels that contain GDGs may cause a loop/hang condition.

  • An 0C4 exception can occur in Co:Z SFTP if there is an open error on a z/OS dataset.

  • In Co:Z SFTP, a z/OS-formatted dataset listing displays January "Last Referred" dates with a day that is one less than the actual LastReferred date.

  • A debug-level log message was added to Co:Z SFTP client and server to print out the requested and actual REGION size.

Co:Z Toolkit 1.7.5 - December 13, 2010

In addition to the changes made in the 1.7.4 beta release, the following enhancements and minor fixes are included in this production release:

  • A memory leak was fixed in Co:Z SFTP that caused out-of-memory errors if many Unix files were transferred using a small REGION size.

  • A fix to Co:Z SFTP job submission which sometimes prevented the display of job handles if multiple jobs were submitted in the same session.

  • The read_passwd_dsn_sh script was changed to allocate the dataset with DISP=SHR.

  • The lsjes z/OS Unix command was added to Dataset Pipes to support listing the status of jobs and spool files. Thanks to John McKown for the utility name and the idea of offering this feature as a standalone utility.

  • The Dataset Pipes fromdsn command was enhanced to support reading JES spool files.

  • The Co:Z safauth has been enhanced to add DSA key support.

  • Some of the JCL members in the SAMPJCL PDS have been renamed for clarity. See the @@README member for details.

Co:Z Target System Toolkit 1.0.11 - December 13,2010

Production version of the previous (beta) 1.0.9 release. This version has a minor change to the target program child I/O process wait / cleanup.

Co:Z Target System Toolkit 1.0.9 - September 30,2010 (Beta Release)

Note: This release of the Co:Z Target System Toolkit should only be used with version 1.7.4 or later of the z/OS Co:Z Launcher. Previous versions are still compatible with Co:Z Launcher 1.7.4.

  • CoZAgent changed to emit a "Waiting for completion..." message every five minutes. This may be helpful to keep the ssh session alive in some environments where the connection may otherwise timeout.

  • CoZAgent changed to detect cleanup errors with the stdin/stdout/stderr handlers and to exit with RC=103 if one of these child processes did not complete successfully.

  • CoZClient and the fromdsn/todsn clients changed to support a new environment variable: COZ_SSH_OPTS. This environment variable can be set in a client-initiated ssh connection to set user@host and any other ssh option defaults. This variable should not be set when running under the Co:Z Launcher.

Co:Z Toolkit 1.7.4 - September 28, 2010 (Beta Release)
  • Co:Z SFTP - significant enhancements to JES support:

    • Support for submitting jobs to internal reader A handle/name can be used to refer to submitted jobs. New settings jesrecfm and jeslrecl can be used to control format of internal reader dataset.

    • A new setting jesjobwait allows for waiting for job completion before listing or downloading spool files.

    • Support for downloading concatenated spool files for a job.

    • Selection of spool files by either dsid or [step.[procstep.]]ddname.

    • New setting jesstatus can be used to filter job listing by status.

    • sftp-server.sh changed to remove empty log files on completion.

    • Fixed bug where fixed options could be overridden.

  • Co:Z Launcher

    • Added ssh-le-options to property to allow setting of RUNOPTS for ssh child process. Set the default in COZCFGD so to set the initial HEAP size for Ported Tools OpenSSH to avoid storage allocation problem.

    • Fixed a timing bug that sometimes results in not cleaning up child processes. Before this fix, target fromdsn/todsn commands occasionally do not get cleaned up properly.

  • Enhanced to safauth command to allow volser option.

  • Fixed bug in genlines command in processing -l rdw option.

1.7.2 - July 23, 2010
  • Made the Co:Z toolkit compatible with IBM Ported Tools for z/OS version 1.2. Specifically, components in the toolkit that spawn the ssh client have been changed to spawn with a default setting of _BPX_SHAREAS=YES (the old default value was MUST). This accomodates IBM's change to ssh that requires it to run in a separate address space.

  • Added create-symlinks.sh script in the Co:Z install directory. This script can be used to add or replace the symbolic links to the commonly used Co:Z executables.

1.7.1 - <not released - items below are included in all subsequent releases>
  • Added new option (no)replace.

  • Changed the way the sftp-server log filenames are calculated to eliminate a potential race condition on the name.

1.7.0 - June 8, 2010
  • Added support for new /etc/ssh/cozsftp_config and /etc/ssh/cozsftp_server_config site configuration files.

  • Fixed a problem traversing from /+ to its parent (root).

  • Enhanced sftp-server.sh to write a message to the console if the log file or /tmp is full.

  • Sample configuration and .rc files are now packaged in a samples directory.

  • Changed product to use a more corporate-friendly free Community License and made Co:Z FTP-SSH Proxy an add-on component. See the licensing FAQ for more information.

1.6.1 - April 16, 2010
  • Fixed a problem in Co:Z SFTP server where certain options set via the SFTP_ZOS_OPTIONS environment variable can cause a loop.

  • Fixed a problem in Co:Z SFTP client and server where SMF records were not being cut for transfers to SYSOUT datasets.

1.6.0 - March 30, 2010
  • Fixed a problem in the Co:Z SFTP where dataset write errors might not be reported correctly.

  • Fixed a problem in the Co:Z SFTP server where no error was being reported if too many catalog search entries were being read during a client listing request. The client will now report a directory read error and the error log will contain a message.

  • Fixed a problem in the Co:Z SFTP server which can prevent uploading to a SYSOUT dataset.

  • Fixed saf-ssh-agent so that it reports the exit code of the command run under the -c option. Also fixed a potential race condition where the agent might not start in time for the ssh client to use it.

  • Changed cozsftp and CozClient to retry fork() when receiving EAGAIN on z/OS. This is in response to IBM USS DOC APAR OA30943 (Problem #1).

  • Added a new z/OS shell command "safauth" which can be used to check the current user's authorization for a SAF resource.

1.5.3 - January 19, 2010
  • Enhanced saf-ssh-agent with a new option (-c) that accepts a command (such as ssh) to run as a child process so that it can authenticate via SAF RACDCERT digital certificates.

  • Enhanced Co:Z SFTP to provide an interface to z/OS JES job status and spool files. Future releases of Co:Z will also support enhanced job submit, cancel, and purge facilities

1.5.2 - December 8, 2009
  • Minor fix to Co:Z SFTP for the space=blk setting. This will cause the BPXWDYN keyword block(n) to be used, where n is either the value on the blksize keyword or 0 if the blksize keyword is not set.

1.5.1 - December 2, 2009
  • Minor fix to Co:Z SFTP FTP-compatible user exit support so that check-command exits are properly called when setting the unit and ucount options.

1.5.0 - November 2009
  • Support added to enable the use of RACF RSA Digital Certificates for OpenSSH client authentication. This feature can be exploited by both the Co:Z Launcher and the z/OS SFTP client (cozsftp).

  • Co:Z Launcher MVS console communication has been enhanced to automatically fold input to lower case. The underscore ('_') escape character can be used to force the character that follows to upper case.

  • The todsn command -x option has been enhanced to allow the BPXWDYN DD or FI keyword to allow the use to specify a specific DD name to dynamically allocate rather than using a default system-assigned DD name.

  • Fixed a problem in cozsftp with large buffers (-B option) that was causing hangs and or poor throughput.

  • Fixed a problem in Co:Z SFTP so that when processing HFS/zFS files, ASCII linefeed characters (x'0a) are properly substituted for ASCII NEL characters (x'85'). This problem had affected some users who requested linerule=crlf with codepages that by default converted EBCDIC linefeed to ASCII NEL (x'85').

1.4.1 - October 2009

This release includes the following changes to Co:Z SFTP from the prior GA release:

  • Support for IBM FTP compatible user exits.

  • minor bug fixes to several fields in SMF 119 records that were not produced the same as IBM FTP.

  • the CONDDISP=DELETE option will now delete MVS datasets or HFS/zFS files that are being written to by either the SFTP client or server in the case of an incomplete or interrupted file exchange.

  • Corrected MVS dataset name handling with repect to "./" and "../" appearing in file names.

  • Corrected an 0C7 that occurred when processing PDS directories with old SPF format statistics

1.3.2 - July 2009
  • Reworked Target System Toolkit to build on more *nix platforms, including FreeBSD.

  • Added a new dataset prefix //!xxx.yyy which forces the dataset xxx.yyy to be treated as a dataset rather than a "directory" even if datasets xxx.yyy.zzz exist.

  • Fixed dataset estimated size calculation so as to avoid under estimating, which could cause performance problems with some SFTP clients.

  • The file permissions for non-resident datasets were being reported as 000. This has been fixed so that these datasets have a mode of 0666.

1.3.0 - June 2009
  • Co:Z SFTP has been enhanced to allow for an initial directory (or dataset qualifier) to be configured.

  • SMF 119 records with failure codes are written when cozsftp or sftp-server terminates unexpectedly during file transfer.

  • The software license has been simplified. The Co:Z components available in source form are now distributed under a more permissive license (no longer GPL).

  • In some cases, dataset estimated size was not being properly estimated. This has been corrected.

  • The allowmount keyword has been renamed mount to be consistent with current BPXWDYN implementations.

1.2.5 - April 2009
  • Co:Z SFTP has been enhanced to allow for the recall of migrated datasets.

  • DTLSPAWN has been improved and renamed COZBATCH.

1.2.4 - March 2009
  • The Co:Z Launcher can now launch process on not only Windows, *nix, etc, but also another z/OS machine. The target z/OS must also have the z/OS toolkit installed. A new "-local" option is available on the z/OS fromdsn and todsn commands that allows a remotely launches z/OS process to use local dataset I/O.

  • Co:Z SFTP has been corrected to allow group and generic unit names on the BPXWDYN "unit=" setting.

1.2.1 - January 2009

This release has some minor fixes to Co:Z SFTP.

  • Navigating alias dataset levels as a "directory" now works better.

  • SMF recording can be completely disabled by setting the "nosmf" option in the SFTP_ZOS_OPTIONS environment variable.

  • fixed a problem with date formatting in long directory listings while using certain locales.

1.2.0 - December 2008
  • Co:Z SFTP added to the Co:Z Toolkit.

  • A Beta release of Co:Z FTP-SSH Proxy has been added.

1.0.8 - June 2008
  • Changed todsn command so that binary or unterminated source lines properly flow to fill up output records to their maximum size. Previously, short records could result on 128kb boundaries when the output records were variable length.

  • Change the todsn command so that the fopen() option "recfm=*" is added if recfm is not specified. This causes the DCB parameters on existing output datasets to be used if not explicitly overridden.

1.0.7 - May 2008
  • Changed CoZLauncher to terminate app when STOP command received.

  • Changed todsn and fromdsn to honor switches that override -b.

  • Changed CoZLauncher and DTLSPAWN to report region size with DEBUG level logging.

  • Added the ssh-shareas property to allow the ssh client to be spawned in a separate address space if desired.

1.0.6 - March 2008
  • Added the server environment variable COZ_FORCE_ICONV to force the use of iconv for translation, even if Unicode System Services is available.

  • Increased performance of single byte character set translations.

1.0.5 - February 2008

Changed the -b option on fromdsn/todsn to disable all translation, even if a source or target codepage was specified.

1.0.0 - December 2007

Co:Z Toolkit initial release

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