Messages in this thread | | | Date | Tue, 2 Dec 2008 10:31:20 -0600 | From | "Steve French" <> | Subject | Support for applications which need NFS or CIFS "share_deny" flags on open |
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Some of the Wine community posted last month to the cifs mailing list asking about a change needed for Wine for working properly over network mounts, but the change is not really cifs specific and would help other file systems as well so I wanted to mention it here. The original post was: http://marc.info/?l=linux-cifs-client&m=122505569315992&w=2
Support for the flags they suggest would be easy for cifs (the protocol has a field for this, and cifs clients on various other OS set it), and should be fairly easy for NFSv4 (the RFC for NFSv4 specifies the "share_deny" field within the NFS open request, and various clients, but not Linux, set it), and would allow WINE to function properly over a network mount.
>we proffer to add into the file /usr/include/asm-generic/fcntl.h > following flags: > >#define O_DENYREAD 004000000 /* Do not permit read access */ >#define O_DENYWRITE 010000000 /* Do not permit write access */ >#define O_DENYDELETE 020000000 /* Do not permit delete or rename > operations*/
Presumably for applications on local mounts, wine mediates their own mandatory locks, but this is impossible on network mounts without this change (and can lead to data corruption).
-- Thanks,
Steve
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