[Bugme-new] [Bug 6771] New: truncate() does not update ctime and
mtime when file is extended
bugme-daemon at bugzilla.kernel.org
bugme-daemon at bugzilla.kernel.org
Thu Jun 29 23:56:13 PDT 2006
http://bugzilla.kernel.org/show_bug.cgi?id=6771
Summary: truncate() does not update ctime and mtime when file is
extended
Kernel Version: 2.6.17
Status: NEW
Severity: normal
Owner: reiserfs-dev at namesys.com
Submitter: michael.kerrisk at gmx.net
Most recent kernel where this bug did not occur: don't know
Distribution: SUSE 10.0
Hardware Environment: x86
Software Environment:
Problem Description:
POSIX requires that truncate() only change the ctime and mtime on the file if
the file size actually change. On ext2 and ext3, this seems to work as required.
However, Reiserfs is broken: it only updates the file timestamps if a file is
shrunk. If the file size remains the same the timestamps are not changed
(correct), but if the file size increases, the timestamps are also not changed
(wrong).
Steps to reproduce:
Something like the following can be used to test:
...
int main(int argc, char *argv[])
{
if (truncate(argv[1], atoi(argv[2])) == -1)
perror("truncate")
}
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