diff options
| author | J. Bruce Fields <bfields@citi.umich.edu> | 2010-05-18 20:01:35 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2010-05-31 12:43:55 -0400 |
| commit | 24a0111e405abeb74701ce3b7b665365c27de19e (patch) | |
| tree | 97812d2abd30aeebf9eb1d4977b34a0175665e23 /fs | |
| parent | 172c85dd5764d2766bfd68621e5b54e85c4a6cfa (diff) | |
| download | linux-3.10-24a0111e405abeb74701ce3b7b665365c27de19e.tar.gz linux-3.10-24a0111e405abeb74701ce3b7b665365c27de19e.tar.bz2 linux-3.10-24a0111e405abeb74701ce3b7b665365c27de19e.zip | |
nfsd4: fix use of op_share_access
NFSv4.1 adds additional flags to the share_access argument of the open
call. These flags need to be masked out in some of the existing code,
but current code does that inconsistently.
Tested-by: Michael Groshans <groshans@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 12f7109720c..117670864af 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -2255,6 +2255,13 @@ find_delegation_file(struct nfs4_file *fp, stateid_t *stid) return NULL; } +int share_access_to_flags(u32 share_access) +{ + share_access &= ~NFS4_SHARE_WANT_MASK; + + return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE; +} + static __be32 nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_delegation **dp) @@ -2265,8 +2272,7 @@ nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open, *dp = find_delegation_file(fp, &open->op_delegate_stateid); if (*dp == NULL) goto out; - flags = open->op_share_access == NFS4_SHARE_ACCESS_READ ? - RD_STATE : WR_STATE; + flags = share_access_to_flags(open->op_share_access); status = nfs4_check_delegmode(*dp, flags); if (status) *dp = NULL; @@ -2358,6 +2364,7 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct svc_fh *cur_fh, struct nfs4_sta struct file *filp = stp->st_vfs_file; struct inode *inode = filp->f_path.dentry->d_inode; unsigned int share_access, new_writer; + u32 op_share_access; __be32 status; set_access(&share_access, stp->st_access_bmap); @@ -2380,8 +2387,9 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct svc_fh *cur_fh, struct nfs4_sta return status; } /* remember the open */ - filp->f_mode |= open->op_share_access; - __set_bit(open->op_share_access, &stp->st_access_bmap); + op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK; + filp->f_mode |= op_share_access; + __set_bit(op_share_access, &stp->st_access_bmap); __set_bit(open->op_share_deny, &stp->st_deny_bmap); return nfs_ok; |