Red Hat Bugzilla – Bug 106550
"file -z" hangs on examining some gzipped files
Last modified: 2007-11-30 17:10:32 EST
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Description of problem:
file command hangs on examining some compressed files with the "-z" option.
on my system:
$ ls -l /usr/bin > lsl
$ gzip lzl
$ file lzl.gz # this works
$ fils -z lsl.gz # this hangs
"file -z" seems to work on short files, but inexplicably hangs on the above.
(at least, after 20 seconds, i feel it's safe to kill it.)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. ls -l /usr/bin > lsl
2. gzip lsl
3. file -z lsl.gz
Probably a dup of bug 106424 - does upgrading zlib fix it?
No, zlib-18.104.22.168-2 upgrade does not fix.
strace indicates gzip exec and probable child-before-parent problem.
Hmmm, HAVE_LIBZ is deliberately undef'd, dunno.
Off to look at file-4.04.
Yup, nuking the line
in src/compress.c restores file -z functionality.
child-before-parent problem prolly still exists however.
FIxed in file-4.06-1.