Issued:
2012-02-20
Updated:
2012-02-20

RHBA-2012:0264 - autofs bug fix and enhancement update

Synopsis

autofs bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Topic

An updated autofs package that fixes several bugs and adds one enhancement is now available for Red Hat Enterprise Linux 5.

Description

The autofs utility controls the operation of the automount daemon. The automount daemon automatically mounts and unmounts file systems.

This update fixes the following bugs:

  • Previously, autofs submounts incorrectly handled shutdown synchronization and lock restrictions. As a consequence, automount could be unresponsive when submounts expired. With this update, the submount shuts down only after the states ST_SHUTDOWN, ST_SHUTDOWN_PENDING, and ST_SHUTDOWN_FORCE, or when the state changes to ST_READY. (BZ#655685)

  • Previously, automount did not correctly parse unmatched brackets in map entry server names. As a consequence, the sanity check for host names in these map entries could fail. Now, unmatched brackets in server names result in a syntax error being reported and the check no longer fails. (BZ#692814)

  • Previously, the automount logged confusing error messages when syntax errors occurred in map entry locations. This update modifies these messages and displays more informative messages were possible. (BZ#700142)

  • Previously, LDAP servers did not correctly return an opaque cookie to check for additional results when getting paged results from the server on 64-bit PowerPC and IBM System z platforms due to slightly different criteria for deciding if there are more results. As a consequence, the autofs internal functions did not detect when paged result sets were not supported. This update modifies the underlying source code so that autofs now correctly detects whether the paged results are updated. (BZ#700896)

  • Previously, an incorrect check for the presence of additional addresses for a host led to the IP address being used for mounting instead of the host name. As a consequence the IP address was displayed instead of the host name when listing system mounts, even when the host had only a single address. This update modifies the check so that the IP address is used only if a host has multiple IP addresses. (BZ#725536)

  • Previously, incorrect identification of the map entry source caused a failure during the key lookup. As a consequence, map lookups for an automount, where a a key was present in a file map and the same key was also found in an included map, failed if the file map entry was removed and a lookup was performed before a re-load is issued. This update modifies the key lookup code and the lookup works now as expected. (BZ#731514, BZ#732333)

  • Previously, automount could become unresponsive when reloading a master map that included a combination of direct and indirect maps due to incorrect lock ordering. This update corrects the logic used to determine if the lookup needs to continue into included maps. (BZ#732332)

  • Previously, map entries were always mounted using proximity and response time instead of bind mounting when adding a random selection of a host if the mount was local. This update modifies this behavior and also adds the "nobind" option to allow the previous behavior to be forced if needed. (BZ#734675)

  • Previously, the map key lookup mechanism did not find keys in an included multi-mount map entry. This update modifies the lookup mechanism so that keys in multi-mount map entries are now found correctly. (BZ#747020)

  • Previously, the stack allocation function of the temporary work space was used within a loop in the function lookup_ghost(). As a consequence, a stack overflow could occur and automount then failed with a segmentation fault. This update corrects the allocation usage and the stack overflows no longer occurs. (BZ#759221)

This update also adds the following enhancement:

  • With this update,the "--dumpmaps" option to dump maps has been added to dump in autofs. (BZ#732334)

All users of autofs are advised to upgrade to this updated package, which fixes these bugs and adds this enhancement.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • autofs-5.0.1-0.rc2.163.el5.ia64.rpm
  • autofs-5.0.1-0.rc2.163.el5.s390x.rpm
  • autofs-5.0.1-0.rc2.163.el5.src.rpm
  • autofs-5.0.1-0.rc2.163.el5.i386.rpm
  • autofs-5.0.1-0.rc2.163.el5.x86_64.rpm
  • autofs-5.0.1-0.rc2.163.el5.ppc.rpm

Fixes

(none)

CVEs

(none)

References

(none)

Additional information