[Bug 884004] New: bzip2 -dcf skips the first block if fed uncompressed data
https://bugzilla.novell.com/show_bug.cgi?id=884004 https://bugzilla.novell.com/show_bug.cgi?id=884004#c0 Summary: bzip2 -dcf skips the first block if fed uncompressed data Classification: openSUSE Product: openSUSE 13.1 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: jnweiger@gmail.com QAContact: qa-bugs@suse.de Found By: --- Blocker: --- $ echo hello world | bzip2 -dcf returns nothing. I'd expect to see 'hello world'. According to the manual, the effects of -f include: "bzip2 normally declines to decompress files which don't have the correct magic header bytes. If forced (-f), however, it will pass such files through unmodified. This is how GNU gzip behaves. strace includes: read(0, "hello world\n", 4096) = 12 read(0, "", 4096) = 0 lseek(0, 0, SEEK_SET) = -1 ESPIPE (Illegal seek) read(0, "", 4096) = 0 close(0) = 0 I assume, the failing lseek() should be acted on. Possibly already an upstream issue? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=884004 https://bugzilla.novell.com/show_bug.cgi?id=884004#c1 --- Comment #1 from Juergen Weigert <jnweiger@gmail.com> 2014-06-24 12:38:00 UTC --- Seen with $ bzip2 -V bzip2, a block-sorting file compressor. Version 1.0.6, 6-Sept-2010. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=884004 https://bugzilla.novell.com/show_bug.cgi?id=884004#c2 Bernhard Wiedemann <bwiedemann@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bwiedemann@suse.com AssignedTo|bnc-team-screening@forge.pr |vdziewiecki@suse.com |ovo.novell.com | --- Comment #2 from Bernhard Wiedemann <bwiedemann@suse.com> 2014-07-10 11:53:44 CEST --- I guess bzip2 devs never tried this with pipes but should be fixable by reacting to ESPIPE or just never trying to seek and instead using the buffer that was already read. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=884004 https://bugzilla.novell.com/show_bug.cgi?id=884004#c3 --- Comment #3 from Vitezslav Cizek <vcizek@suse.com> 2014-07-31 16:29:29 CEST --- Created an attachment (id=600588) --> (http://bugzilla.novell.com/attachment.cgi?id=600588) this patch does essentially what Bernhard suggested -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=884004 https://bugzilla.novell.com/show_bug.cgi?id=884004#c Vitezslav Cizek <vcizek@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED CC| |vcizek@suse.com AssignedTo|vdziewiecki@suse.com |vcizek@suse.com -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=884004 https://bugzilla.novell.com/show_bug.cgi?id=884004#c4 --- Comment #4 from Bernhard Wiedemann <bwiedemann@suse.com> 2014-08-06 13:00:20 CEST --- This is an autogenerated message for OBS integration: This bug (884004) was mentioned in https://build.opensuse.org/request/show/243760 Factory / bzip2 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=884004 https://bugzilla.novell.com/show_bug.cgi?id=884004#c5 --- Comment #5 from Bernhard Wiedemann <bwiedemann@suse.com> 2014-09-02 19:00:13 CEST --- This is an autogenerated message for OBS integration: This bug (884004) was mentioned in https://build.opensuse.org/request/show/247247 Factory / bzip2 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=884004 SMASH SMASH <smash_bz@suse.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Whiteboard| | maint:planned:update -- You are receiving this mail because: You are on the CC list for the bug.
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