PK92520: REQUEST FOR A URI WITH A LONG FILE PATH CAN FAIL ON Z/OS

APAR status

• Closed as program error.

Error description

• When mod_alias tries to combine the file path from the Alias
  directive with the portion of the URI that comes after the
  alias, a call to apr_filepath_merge fails because APR_PATH_MAX
  is set to 256, the same as _POSIX_PATH_MAX from
  /usr/include/limits.h in distributed Apache. But on z/OS much
  longer paths are supported. APR_PATH_MAX should be set to the
  z/OS limit of 1024.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: IHS users with long paths to web files on    *
  *                 z/OS                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: IHS can fail to serve static files with *
  * long directory paths on z/OS.  HTTP error code 404 appears   *
  * at the browser and "File not found" appears in the error log *
  ****************************************************************
  * RECOMMENDATION: Apply this fix if the paths to your static   *
  * files to be served as web pages are very long (approaching   *
  * 256 characters).                                             *
  ****************************************************************
  IHS uses an APR_PATH_MAX value of 256 on z/OS.  This can cause
  IHS to fail to serve web pages from static files if the
  directory path approaches 256 characters.
  

Problem conclusion

•  Since the limits.h header file on z/OS only
  has a commented out PATH_MAX value, IHS will set APR_PATH_MAX
  from _XOPEN_PATH_MAX if that exists, or to 1024 if
  _XOPEN_PATH_MAX does not exist rather than using
  _POSIX_PATH_MAX which is 256 on z/OS.
  

Temporary fix

Comments

APAR Information

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

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

Modules/Macros

•    APR.H.IN
  

Fix information

• Fixed component name

  WAS IHS ZOS

• Fixed component ID

  5655I3510

Applicable component levels