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Bug 452957 - [RHEL5] localtime() does not handle changes to /etc/locatime
Summary: [RHEL5] localtime() does not handle changes to /etc/locatime
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: glibc
Version: 5.2
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Jakub Jelinek
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2008-06-26 09:02 UTC by Subhendu Ghosh
Modified: 2018-10-20 02:36 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2009-03-04 09:03:34 UTC
Target Upstream Version:

Attachments (Terms of Use)
Fedora8 strace crond -n output (deleted)
2008-06-26 17:51 UTC, Subhendu Ghosh
no flags Details
RHEL5 strace crond -n output (deleted)
2008-06-26 17:52 UTC, Subhendu Ghosh
no flags Details

Description Subhendu Ghosh 2008-06-26 09:02:26 UTC
Description of problem:
localtime() cannot handle any changes made to /etc/localtime.

When invoked in a long running program (eg. cron) /etc/localtime is only stat()
at the first invocation of localtime() via tzset(). Subsequent calls to
localtime() do not use tzset() to check if /etc/localtime has changed.

Version-Release number of selected component (if applicable):

How reproducible:
strace crond -n

Steps to Reproduce:
Actual results:

/etc/localtime is only checked on the first invocation of localtime()

Expected results:

expect /etc/localtime to be checked for every invocation of localtime()

Additional info:

Bug seems to be fixed in upstream glibc and fedora 8 
glibc BZ 5186

Comment 1 Subhendu Ghosh 2008-06-26 17:51:58 UTC
Created attachment 310352 [details]
Fedora8 strace crond -n output

Comment 2 Subhendu Ghosh 2008-06-26 17:52:44 UTC
Created attachment 310353 [details]
RHEL5 strace crond -n output

Comment 4 Jakub Jelinek 2009-03-04 09:03:34 UTC
Will be fixed in RHEL6.

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