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authorJ. Bruce Fields <bfields@citi.umich.edu>2010-05-19 04:01:35 +0400
committerJ. Bruce Fields <bfields@citi.umich.edu>2010-05-31 20:43:55 +0400
commit24a0111e405abeb74701ce3b7b665365c27de19e (patch)
tree97812d2abd30aeebf9eb1d4977b34a0175665e23 /fs/nfsd
parent172c85dd5764d2766bfd68621e5b54e85c4a6cfa (diff)
downloadlinux-24a0111e405abeb74701ce3b7b665365c27de19e.tar.xz
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/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 12f7109720c2..117670864af0 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;