Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Jim Reisert AD1C wrote: I can't control how the ZIP file gets created, but I do expect that when I unzip a file, that the .exe will actually execute without having to change permissions! I guess it comes down to a question of whether *.exe implies chmod +x. It doesn't in any native *ix packaging format, like tar or cpio. Doing this would thus be a break from expected behavior for some. I can see your point, Jim, but I don't think the answer is obvious. Should unzip do this for *.sh? *.pl? *.insert-yfl-extension? Before you answer, have you looked at a programming language list lately? There are only about 750 on this index page in Wikipedia: http://en.wikipedia.org/wiki/List_of_programming_languages I've seen other lists that put the count at more like 2,500. Obviously we don't have to handle them all, as some may re-use extensions, and others aren't directly executable from a shell, like C code. We're still left with hundreds, surely? If we don't have to handle them all, what's the razor that describes which get this special treatment and which don't? How do you deal with conflicts among file name extensions? Now throw in shebang magic. Does unzip have to set the executable bit on files with a shebang line at the start? What if it's binary data that just happens to start with those two bytes? Now does unzip have to parse the line and check for the existence of an interpreter? Should unzip have this special-case code only if it doesn't see an ACL, or does it override explicit settings? This isn't Cygwin-specific. I use a package on Linux that uses zip for its distributed binary packages (yeah, yech, I know), and has a bunch of chmod hackery in its post-unpack installation instructions. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
On 08/17/2009 12:32 PM, Warren Young wrote: Jim Reisert AD1C wrote: I can't control how the ZIP file gets created, but I do expect that when I unzip a file, that the .exe will actually execute without having to change permissions! I guess it comes down to a question of whether *.exe implies chmod +x. It doesn't in any native *ix packaging format, like tar or cpio. Doing this would thus be a break from expected behavior for some. I can see your point, Jim, but I don't think the answer is obvious. Should unzip do this for *.sh? *.pl? *.insert-yfl-extension? Sure, why not? Before you answer, have you looked at a programming language list lately? There are only about 750 on this index page in Wikipedia: http://en.wikipedia.org/wiki/List_of_programming_languages I've seen other lists that put the count at more like 2,500. Obviously we don't have to handle them all, as some may re-use extensions, and others aren't directly executable from a shell, like C code. We're still left with hundreds, surely? If we don't have to handle them all, what's the razor that describes which get this special treatment and which don't? How do you deal with conflicts among file name extensions? Computers are good at handling large lists of things... Now throw in shebang magic. Does unzip have to set the executable bit on files with a shebang line at the start? Great idea! What if it's binary data that just happens to start with those two bytes? You obviously need to look at more than just those two... Now does unzip have to parse the line and check for the existence of an interpreter? Another good idea! Should unzip have this special-case code only if it doesn't see an ACL, or does it override explicit settings? This isn't Cygwin-specific. I use a package on Linux that uses zip for its distributed binary packages (yeah, yech, I know), and has a bunch of chmod hackery in its post-unpack installation instructions. Only 1/2 a smiley smirk... -- Andrew DeFaria http://defaria.com What happened to Preparations A through G? -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
On Aug 15 00:39, Charles Wilson wrote: Andrew DeFaria wrote: Why would DLLs need execute? because otherwise windows will refuse to load them, and the application you just launched which needs that DLL will fail with an ugly message about Failed to initialize: 0xc005. 0xc022, STATUS_ACCESS_DENIED. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Jim Reisert AD1C wrote: Here's an example: CYGWIN: c:\test\cygwin\bin\unzip \dx4w801\dx4win_regexp.zip Archive: \dx4w801\dx4win_regexp.zip inflating: pcre3.dll inflating: regexp/freq1.txt inflating: regexp/qth1.txt inflating: Dx4win.exe c:\testls -l total 3296 -rw-r--r-- 1 reisert Domain Users 3229184 Aug 14 00:20 Dx4win.exe -rw-r--r-- 1 reisert Domain Users 140288 Mar 17 2007 pcre3.dll drwxr-xr-x 1 reisert Domain Users 0 Aug 14 10:57 regexp GNUWIN32: c:\testunzip \dx4w801\dx4win_regexp.zip Archive: /dx4w801/dx4win_regexp.zip inflating: pcre3.dll inflating: regexp/freq1.txt inflating: regexp/qth1.txt inflating: Dx4win.exe c:\testls -l total 3296 -rwx--+ 1 reisert Domain Users 3229184 Aug 14 00:20 Dx4win.exe -rwx--+ 1 reisert Domain Users 140288 Mar 17 2007 pcre3.dll drwx--+ 1 reisert Domain Users 0 Aug 14 10:58 regexp So, which version of zip did you use to create the archive in the first place? It looks like what's going on here is that Gnuwin and Cygwin have different notions on how to represent the permissions on a windows file in a zip archive. Gnuwin is storing the full windows ACL - note the '+' at the end of the file perms when you unpack using that unzip. Cygwin's zip presumably stores and expects to find perms in the unix rwx format, and is maybe picking some default perms when it doesn't find any unixy ones. Potentially Cygwin's zip could be extended to understand the windows ACL format and unpack it, but for now I guess you need to make sure you pack and unpack with a matching pair of zip/unzip, or accept that in the unixy cygwin world, a bunch of files from a windows zip archive simply aren't going to come with unixy perms because windows zip doesn't know about them. cheers, DaveK -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Dave Korn asked: So, which version of zip did you use to create the archive in the first place? I got the ZIP file from someone else. I don't know what program he used, could have been WINZIP or something else. I can't control how the ZIP file gets created, but I do expect that when I unzip a file, that the .exe will actually execute without having to change permissions! - Jim -- Jim Reisert AD1C, jjreis...@alum.mit.edu, http://www.ad1c.us -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
UNZIP: Why don't .exe/.dll files get eXecute privs?
Something has been bugging me about Cygwin UNZIP for years. When I unzip a file, the extracted .exe and .dll files no longer have execute privs. I have to manually chmod +x them. This always occurs when I'm in a DOS prompt and using the Cygwin unzip. The same unzip from http://gnuwin32.sourceforge.net doesn't have this problem. Why is Cygwin different? Thanks - Jim -- Jim Reisert AD1C, jjreis...@alum.mit.edu, http://www.ad1c.us -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Jim Reisert AD1C wrote: Something has been bugging me about Cygwin UNZIP for years. When I unzip a file, the extracted .exe and .dll files no longer have execute privs. I have to manually chmod +x them. This always occurs when I'm in a DOS prompt and using the Cygwin unzip. The same unzip from http://gnuwin32.sourceforge.net doesn't have this problem. Why is Cygwin different? It's not: ad...@ubik /tmp/unzip $ cp /bin/ls.exe . ad...@ubik /tmp/unzip $ ls -la total 216 drwxr-xr-x 1 DKAdmin None 0 Aug 14 17:59 . drwxrwxrwt 1 DKAdmin None 90112 Aug 14 17:58 .. -rwxr-xr-x 1 DKAdmin None 129536 Aug 14 17:59 ls.exe ad...@ubik /tmp/unzip $ zip -m test.zip ls.exe adding: ls.exe (deflated 51%) ad...@ubik /tmp/unzip $ unzip -tvv test.zip Archive: test.zip testing: ls.exe OK No errors detected in compressed data of test.zip. ad...@ubik /tmp/unzip $ ls -la total 152 drwxr-xr-x 1 DKAdmin None 0 Aug 14 18:00 . drwxrwxrwt 1 DKAdmin None 90112 Aug 14 17:58 .. -rw-r--r-- 1 DKAdmin None 63625 Aug 14 18:00 test.zip ad...@ubik /tmp/unzip $ unzip test.zip Archive: test.zip inflating: ls.exe ad...@ubik /tmp/unzip $ ls -la total 280 drwxr-xr-x 1 DKAdmin None 0 Aug 14 18:00 . drwxrwxrwt 1 DKAdmin None 90112 Aug 14 17:58 .. -rwxr-xr-x 1 DKAdmin None 129536 Aug 14 17:59 ls.exe -rw-r--r-- 1 DKAdmin None 63625 Aug 14 18:00 test.zip ad...@ubik /tmp/unzip $ Can you show an example? cheers, DaveK -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Here's an example: CYGWIN: c:\test\cygwin\bin\unzip \dx4w801\dx4win_regexp.zip Archive: \dx4w801\dx4win_regexp.zip inflating: pcre3.dll inflating: regexp/freq1.txt inflating: regexp/qth1.txt inflating: Dx4win.exe c:\testls -l total 3296 -rw-r--r-- 1 reisert Domain Users 3229184 Aug 14 00:20 Dx4win.exe -rw-r--r-- 1 reisert Domain Users 140288 Mar 17 2007 pcre3.dll drwxr-xr-x 1 reisert Domain Users 0 Aug 14 10:57 regexp GNUWIN32: c:\testunzip \dx4w801\dx4win_regexp.zip Archive: /dx4w801/dx4win_regexp.zip inflating: pcre3.dll inflating: regexp/freq1.txt inflating: regexp/qth1.txt inflating: Dx4win.exe c:\testls -l total 3296 -rwx--+ 1 reisert Domain Users 3229184 Aug 14 00:20 Dx4win.exe -rwx--+ 1 reisert Domain Users 140288 Mar 17 2007 pcre3.dll drwx--+ 1 reisert Domain Users 0 Aug 14 10:58 regexp On Fri, Aug 14, 2009 at 10:43 AM, Jim Reisert AD1Cjjreis...@alum.mit.edu wrote: Something has been bugging me about Cygwin UNZIP for years. When I unzip a file, the extracted .exe and .dll files no longer have execute privs. I have to manually chmod +x them. This always occurs when I'm in a DOS prompt and using the Cygwin unzip. The same unzip from http://gnuwin32.sourceforge.net doesn't have this problem. Why is Cygwin different? Thanks - Jim -- Jim Reisert AD1C, jjreis...@alum.mit.edu, http://www.ad1c.us -- Jim Reisert AD1C, jjreis...@alum.mit.edu, http://www.ad1c.us -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Jim Reisert AD1C wrote: Something has been bugging me about Cygwin UNZIP for years. When I unzip a file, the extracted .exe and .dll files no longer have execute privs. I have to manually chmod +x them. This always occurs when I'm in a DOS prompt and using the Cygwin unzip. Why would DLLs need execute? -- Andrew DeFaria http://defaria.com ... File not found. Should I fake it? (Y/N) -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Andrew DeFaria wrote: Why would DLLs need execute? because otherwise windows will refuse to load them, and the application you just launched which needs that DLL will fail with an ugly message about Failed to initialize: 0xc005. -- Chuck -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: UNZIP: Why don't .exe/.dll files get eXecute privs?
Charles Wilson wrote: Andrew DeFaria wrote: Why would DLLs need execute? because otherwise windows will refuse to load them, and the application you just launched which needs that DLL will fail with an ugly message about Failed to initialize: 0xc005. Really? I did not know that! -- Andrew DeFaria http://defaria.com All generalizations are false -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
