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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-11-04 21:33:38 +0100 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-11-04 21:33:38 +0100 |
| commit | d530838bfa507d67b40d13b00d9cbd7a46a47e78 (patch) | |
| tree | f4b2be26c0a7b9ed3233a2be016b7e97427f8705 /fs/nfs/read.c | |
| parent | NFSv4: Fix a race between open() and close() (diff) | |
| download | linux-d530838bfa507d67b40d13b00d9cbd7a46a47e78.tar.xz linux-d530838bfa507d67b40d13b00d9cbd7a46a47e78.zip | |
NFSv4: Fix problem with OPEN_DOWNGRADE
RFC 3530 states that for OPEN_DOWNGRADE "The share_access and share_deny
bits specified must be exactly equal to the union of the share_access and
share_deny bits specified for some subset of the OPENs in effect for
current openowner on the current file.
Setattr is currently violating the NFSv4 rules for OPEN_DOWNGRADE in that
it may cause a downgrade from OPEN4_SHARE_ACCESS_BOTH to
OPEN4_SHARE_ACCESS_WRITE despite the fact that there exists no open file
with O_WRONLY access mode.
Fix the problem by replacing nfs4_find_state() with a modified version of
nfs_find_open_context().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/read.c')
| -rw-r--r-- | fs/nfs/read.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 43b03b19731b..5f20eafba8ec 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -507,7 +507,7 @@ int nfs_readpage(struct file *file, struct page *page) goto out_error; if (file == NULL) { - ctx = nfs_find_open_context(inode, FMODE_READ); + ctx = nfs_find_open_context(inode, NULL, FMODE_READ); if (ctx == NULL) return -EBADF; } else @@ -576,7 +576,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, nr_pages); if (filp == NULL) { - desc.ctx = nfs_find_open_context(inode, FMODE_READ); + desc.ctx = nfs_find_open_context(inode, NULL, FMODE_READ); if (desc.ctx == NULL) return -EBADF; } else |