NFSv4: Make nfs4_state track O_RDWR, O_RDONLY and O_WRONLY separately

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A closer reading of RFC3530 reveals that OPEN_DOWNGRADE must always
 specify a access modes that have been the argument of a previous OPEN
 operation.
 IOW: doing OPEN(O_RDWR) and then OPEN_DOWNGRADE(O_WRONLY) is forbidden
 unless the user called OPEN(O_WRONLY)

 In order to fix that, we really need to track the three possible open
 states separately.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

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This commit is contained in:

Trond Myklebust 2006-01-03 09:55:13 +01:00

parent cdd4e68b5f

commit e761692381

3 changed files with 42 additions and 28 deletions

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5

fs/nfs/nfs4_fs.h

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34

fs/nfs/nfs4proc.c

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31

fs/nfs/nfs4state.c

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