Re: [Zutils-bug] zcat: misses -t option
Daniel Baumann wrote: On 07/26/2018 06:53 PM, Antonio Diaz Diaz wrote: The problem, IMO, is in the xcpio() function of unmkinitramfs. It should use 'gzip -t' instead of 'zcat -t', just as it already uses 'bzip2 -t' and 'lzop -t'. Think that posix zcat does not document a -t option[3] and therefore 'zcat -t' is not a portable way to check file integrity. indeed, thank you for your help. I've commented and reassigned the bug accordingly. Thank you. I have sent a trivial patch to http://bugs.debian.org/903931 replacing also xzcat, as advised in the xz man page. Best regards, Antonio. ___ Zutils-bug mailing list Zutils-bug@nongnu.org https://lists.nongnu.org/mailman/listinfo/zutils-bug
Re: [Zutils-bug] zcat: misses -t option
Hi Antonio, On 07/26/2018 06:53 PM, Antonio Diaz Diaz wrote: > The problem, IMO, is in the xcpio() function of unmkinitramfs. It should > use 'gzip -t' instead of 'zcat -t', just as it already uses 'bzip2 -t' > and 'lzop -t'. Think that posix zcat does not document a -t option[3] > and therefore 'zcat -t' is not a portable way to check file integrity. indeed, thank you for your help. I've commented and reassigned the bug accordingly. Regards, Daniel ___ Zutils-bug mailing list Zutils-bug@nongnu.org https://lists.nongnu.org/mailman/listinfo/zutils-bug
Re: [Zutils-bug] zcat: misses -t option
Hi Daniel, Daniel Baumann wrote: I recently got the following bug-report in Debian, where there's a problem that zcat from zutils doesn't implement the -t option: https://bugs.debian.org/903931 Do you think, such an option could be added to zutils? But the zcat from zutils does implement the -t option[1]. [1] http://www.nongnu.org/zutils/manual/zutils_manual.html#Zcat It seems that there are two ways of implementing *zcat programs out there. The zcat from zutils is a complete implementation of a cat program like the one from GNU coreutils[2] but with transparent decompression. I have invested a lot of work to make it work well. [2] http://www.gnu.org/software/coreutils/manual/html_node/cat-invocation.html#cat-invocation The rest of the *zcat programs out there seem to be just wrapper scripts. The zcat from gzip boils down to 'exec gzip -cd "$@"'. The problem, IMO, is in the xcpio() function of unmkinitramfs. It should use 'gzip -t' instead of 'zcat -t', just as it already uses 'bzip2 -t' and 'lzop -t'. Think that posix zcat does not document a -t option[3] and therefore 'zcat -t' is not a portable way to check file integrity. [3] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/zcat.html Best regards, Antonio. ___ Zutils-bug mailing list Zutils-bug@nongnu.org https://lists.nongnu.org/mailman/listinfo/zutils-bug
