IV04539: PARALLEL FTP MGET MAY CAUSE UNEXPECTED FILE DOWNLOAD APPLIES TO AIX 5300-11

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When multiple ftp clients use mget command in parallel,
  unexpected file
  may be downloaded by rare timing window.
  
  For example, one ftp client sends "mget fileA*" request
  and another one
  sends "mget fileB*", former client may download latter
  "fileB*".
  
  This problem also happens on mdelete and proxy mode mput.
  

Local fix

• 1. Don't use mget command in parallel
  2. Use "ls" and "get" independently instead of using mget
  

Problem summary

• When multiple ftp clients use mget command in parallel,
  unexpected file may be downloaded by rare timing window.
  
  For example, one ftp client sends "mget fileA*" request and
  another one sends "mget fileB*", former client may download
  latter "fileB*".
  
  This problem also happens on mdelete and proxy mode mput.
  

Problem conclusion

• Modified ftp code to store the list of the files to download
  with unique name in the temporary directory, so that this
  problem doesn't happen.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IV01331

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  AIX 5.3

• Fixed component ID

  5765G0300

Applicable component levels

• R530 PSY U844850

     UP11/10/10 I 1000

PTF to Fileset Mapping

• U844850 bos.net.tcp.client 5.3.11.7