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| author | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2017-07-26 12:00:21 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2017-10-16 13:51:27 -0400 |
| commit | 1750d929b08764dd293d5bdddaa9bc4d3f94d228 (patch) | |
| tree | 92832c1be321397bd8ead4d530bda3889db87160 /fs/nfs/dir.c | |
| parent | 3c1818275cc65c6d53e0adfde0c989bfe89ab8d7 (diff) | |
| download | linux-1750d929b08764dd293d5bdddaa9bc4d3f94d228.tar.bz2 | |
NFS: Don't compare apples to elephants to determine access bits
The NFS_ACCESS_* flags aren't a 1:1 mapping to the MAY_* flags, so
checking for MAY_WHATEVER might have surprising results in
nfs*_proc_access(). Let's simplify this check when determining which
bits to ask for, and do it in a generic place instead of copying code
for each NFS version.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/dir.c')
| -rw-r--r-- | fs/nfs/dir.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 80f397dc96bb..db482d4c15d5 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2425,9 +2425,14 @@ static int nfs_do_access(struct inode *inode, struct rpc_cred *cred, int mask) if (!may_block) goto out; - /* Be clever: ask server to check for all possible rights */ - cache.mask = NFS_MAY_LOOKUP | NFS_MAY_EXECUTE - | NFS_MAY_WRITE | NFS_MAY_READ; + /* + * Determine which access bits we want to ask for... + */ + cache.mask = NFS_ACCESS_READ | NFS_ACCESS_MODIFY | NFS_ACCESS_EXTEND; + if (S_ISDIR(inode->i_mode)) + cache.mask |= NFS_ACCESS_DELETE | NFS_ACCESS_LOOKUP; + else + cache.mask |= NFS_ACCESS_EXECUTE; cache.cred = cred; status = NFS_PROTO(inode)->access(inode, &cache); if (status != 0) { |