Re: [Pharo-dev] FileSystem Permissions
Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? Sven Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
Re: [Pharo-dev] FileSystem Permissions
On 2013-07-02, at 11:44, Sven Van Caekenberghe s...@stfx.eu wrote: Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? The problem is deeper that the mere permissions. The permissions only look at the POSIX permissions returned by fstat/stat, but it does not respect the current user. The problem you find is rather that all the other FS primitives do not know how to deal with permissions. The following code yields an error since the primitive signals a Directory Not Found which should not happen: (FileSystem root / 'lost+found') exists ifTrue: [ (FileSystem root / 'lost+found') hasChildren ].
Re: [Pharo-dev] FileSystem Permissions
Le 02/07/2013 11:44, Sven Van Caekenberghe a écrit : Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? No, it's not. There are no primitives I could see in FilePlugin (at least the ones used) to write correct permissions in Pharo... In short, no isReadable, isWriteable can be made correct in Pharo at the moment. I wrote test code expecting this to work :( Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
Re: [Pharo-dev] FileSystem Permissions
Le 02/07/2013 11:44, Sven Van Caekenberghe a écrit : Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? No, it's not. There are no primitives I could see in FilePlugin (at least the ones used) to write correct permissions in Pharo... In short, no isReadable, isWriteable can be made correct in Pharo at the moment. I wrote test code expecting this to work :( nope there is indeed no code for this. We modified the VM to support the permission reading, but we didn't add support for writing it. Maybe this is again a nice usecase for NativeBoost?
Re: [Pharo-dev] FileSystem Permissions
Le 02/07/2013 12:48, Camillo Bruni a écrit : On 2013-07-02, at 11:44, Sven Van Caekenberghe s...@stfx.eu wrote: Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? The problem is deeper that the mere permissions. The permissions only look at the POSIX permissions returned by fstat/stat, but it does not respect the current user. Yes, it's something like that. The problem you find is rather that all the other FS primitives do not know how to deal with permissions. The following code yields an error since the primitive signals a Directory Not Found which should not happen: (FileSystem root / 'lost+found') exists ifTrue: [ (FileSystem root / 'lost+found') hasChildren ]. No, they do work, but the base permission information (as far as I could see, it's only retrieved with getting directory entries) is unusable. It's the overall POSIX data, but without the ownership and anyway to correlate pharo ownership and file ownership. Anybody to explain me how to write NB code to call directly stat/fstat? I find this failure to be really embarassing for Pharo. Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
Re: [Pharo-dev] FileSystem Permissions
The problem is deeper that the mere permissions. The permissions only look at the POSIX permissions returned by fstat/stat, but it does not respect the current user. Yes, it's something like that. The problem you find is rather that all the other FS primitives do not know how to deal with permissions. The following code yields an error since the primitive signals a Directory Not Found which should not happen: (FileSystem root / 'lost+found') exists ifTrue: [ (FileSystem root / 'lost+found') hasChildren ]. No, they do work, but the base permission information (as far as I could see, it's only retrieved with getting directory entries) is unusable. It's the overall POSIX data, but without the ownership and anyway to correlate pharo ownership and file ownership. Anybody to explain me how to write NB code to call directly stat/fstat? I find this failure to be really embarassing for Pharo. be lucky that there even IS support for permissions ;), but yeah for me this is also hard to understand that for years there hasn't been support for this :/
Re: [Pharo-dev] FileSystem Permissions
Le 02/07/2013 15:08, Camillo Bruni a écrit : The problem is deeper that the mere permissions. The permissions only look at the POSIX permissions returned by fstat/stat, but it does not respect the current user. Yes, it's something like that. The problem you find is rather that all the other FS primitives do not know how to deal with permissions. The following code yields an error since the primitive signals a Directory Not Found which should not happen: (FileSystem root / 'lost+found') exists ifTrue: [ (FileSystem root / 'lost+found') hasChildren ]. No, they do work, but the base permission information (as far as I could see, it's only retrieved with getting directory entries) is unusable. It's the overall POSIX data, but without the ownership and anyway to correlate pharo ownership and file ownership. Anybody to explain me how to write NB code to call directly stat/fstat? I find this failure to be really embarassing for Pharo. be lucky that there even IS support for permissions ;), but yeah for me this is also hard to understand that for years there hasn't been support for this :/ It's as if there are none, at the moment. It only works on files you own :) I could write OSProcess-based code, I'm becoming good at that ;) Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
Re: [Pharo-dev] FileSystem Permissions
On 2013-07-02, at 15:11, Goubier Thierry thierry.goub...@cea.fr wrote: Le 02/07/2013 15:02, Camillo Bruni a écrit : Le 02/07/2013 11:44, Sven Van Caekenberghe a écrit : Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? No, it's not. There are no primitives I could see in FilePlugin (at least the ones used) to write correct permissions in Pharo... In short, no isReadable, isWriteable can be made correct in Pharo at the moment. I wrote test code expecting this to work :( nope there is indeed no code for this. We modified the VM to support the permission reading, but we didn't add support for writing it. Maybe this is again a nice usecase for NativeBoost? I'm ready to try. Anybody to explain me how to use NativeBoost for that? You can check the OSEnvironment classes, they use getenv / setenv to accomplish simple callouts. But I think fstat is more complex than that since it returns a struct and pass in the proper file descriptors :/... As an immediate ver short term solution under linux I suggest using OSProcess + a chmod call :(
Re: [Pharo-dev] FileSystem Permissions
Le 02/07/2013 15:12, Camillo Bruni a écrit : On 2013-07-02, at 15:11, Goubier Thierry thierry.goub...@cea.fr wrote: Le 02/07/2013 15:02, Camillo Bruni a écrit : Le 02/07/2013 11:44, Sven Van Caekenberghe a écrit : Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? No, it's not. There are no primitives I could see in FilePlugin (at least the ones used) to write correct permissions in Pharo... In short, no isReadable, isWriteable can be made correct in Pharo at the moment. I wrote test code expecting this to work :( nope there is indeed no code for this. We modified the VM to support the permission reading, but we didn't add support for writing it. Maybe this is again a nice usecase for NativeBoost? I'm ready to try. Anybody to explain me how to use NativeBoost for that? You can check the OSEnvironment classes, they use getenv / setenv to accomplish simple callouts. Ok. Thanks. But I think fstat is more complex than that since it returns a struct and pass in the proper file descriptors :/... As an immediate ver short term solution under linux I suggest using OSProcess + a chmod call :( No, what I really want is to get permission reading right... At the moment I can't even add a file based repository to a Pharo 3.0 image :(:( Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
Re: [Pharo-dev] FileSystem Permissions
I think I have what is needed. ACCESS(2) Linux Programmer's Manual ACCESS(2) NAME access - check real user's permissions for a file SYNOPSIS #include unistd.h int access(const char *pathname, int mode); Thierry Le 02/07/2013 15:12, Camillo Bruni a écrit : On 2013-07-02, at 15:11, Goubier Thierry thierry.goub...@cea.fr wrote: Le 02/07/2013 15:02, Camillo Bruni a écrit : Le 02/07/2013 11:44, Sven Van Caekenberghe a écrit : Hi Thierry, On 02 Jul 2013, at 11:34, Goubier Thierry thierry.goub...@cea.fr wrote: Hi all, it seems FileSystem permissions are not working at all like intended in Linux, and it's the case in both 2.0 and 3.0 (but it 3.0 it has the elegance of rendering the file browser and all file dialogs unusable :(). https://pharo.fogbugz.com/f/cases/11102/FileSystemError-Path-root (an entry like drwx-- 10 root root 4096 mai 15 13:26 /root is readable according to FileReference :() Is there any point in the vm to do a fstat/stat ? I think the basic information is there, see FileSystemDirectoryEntryposixPermissions. It seems that the way that information is subsequently handled in Pharo is wrong, or at least way too simple. The question is of course, what is a good cross platform API. Mac OS X Linux will be quite similar, but Windows ? No, it's not. There are no primitives I could see in FilePlugin (at least the ones used) to write correct permissions in Pharo... In short, no isReadable, isWriteable can be made correct in Pharo at the moment. I wrote test code expecting this to work :( nope there is indeed no code for this. We modified the VM to support the permission reading, but we didn't add support for writing it. Maybe this is again a nice usecase for NativeBoost? I'm ready to try. Anybody to explain me how to use NativeBoost for that? You can check the OSEnvironment classes, they use getenv / setenv to accomplish simple callouts. But I think fstat is more complex than that since it returns a struct and pass in the proper file descriptors :/... As an immediate ver short term solution under linux I suggest using OSProcess + a chmod call :( -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
Re: [Pharo-dev] FileSystem Permissions
On 2013-07-02, at 15:27, Goubier Thierry thierry.goub...@cea.fr wrote: I think I have what is needed. ACCESS(2) Linux Programmer's Manual ACCESS(2) NAME access - check real user's permissions for a file SYNOPSIS #include unistd.h int access(const char *pathname, int mode); that looks doable in NativeBoost :)
Re: [Pharo-dev] FileSystem Permissions
Done: SLICE-Issue-11102-FileSystemError-Path--root-ThierryGoubier.1 In http://ss3.gemstone.com/ss/PharoInbox (It's for 2.0 at the moment. I'll try on 3.0 to port the same code). Thierry Le 02/07/2013 15:24, Camillo Bruni a écrit : On 2013-07-02, at 15:27, Goubier Thierry thierry.goub...@cea.fr wrote: I think I have what is needed. ACCESS(2) Linux Programmer's Manual ACCESS(2) NAME access - check real user's permissions for a file SYNOPSIS #include unistd.h int access(const char *pathname, int mode); that looks doable in NativeBoost :) -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
