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authorJ. Bruce Fields <bfields@redhat.com>2011-10-13 11:37:11 -0400
committerJ. Bruce Fields <bfields@redhat.com>2011-10-17 17:50:08 -0400
commit856121b2e83bd64bffdc8de449d24c9295e92ff3 (patch)
treed60a777368fa48120a878407dd7abdcc780d2eba
parent4cdc951b8611de4ce25e35c9fb8c0656150c9245 (diff)
nfsd4: warn on open failure after create
If we create the object and then return failure to the client, we're left with an unexpected file in the filesystem. I'm trying to eliminate such cases but not 100% sure I have so an assertion might be helpful for now. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
-rw-r--r--fs/nfsd/nfs4proc.c7
-rw-r--r--fs/nfsd/vfs.c2
-rw-r--r--fs/nfsd/vfs.h2
-rw-r--r--fs/nfsd/xdr4.h3
4 files changed, 8 insertions, 6 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 10b50d78bdc..710b97b7a2f 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -194,7 +194,6 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
{
struct svc_fh resfh;
__be32 status;
- int created = 0;
fh_init(&resfh, NFS4_FHSIZE);
open->op_truncate = 0;
@@ -223,7 +222,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
open->op_fname.len, &open->op_iattr,
&resfh, open->op_createmode,
(u32 *)open->op_verf.data,
- &open->op_truncate, &created);
+ &open->op_truncate, &open->op_created);
/*
* Following rfc 3530 14.2.16, use the returned bitmask
@@ -253,7 +252,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
/* set reply cache */
fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
&resfh.fh_handle);
- if (!created)
+ if (!open->op_created)
status = do_open_permission(rqstp, current_fh, open,
NFSD_MAY_NOP);
@@ -318,6 +317,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
/* We don't yet support WANT bits: */
open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
+ open->op_created = 0;
/*
* RFC5661 18.51.3
* Before RECLAIM_COMPLETE done, server should deny new lock
@@ -408,6 +408,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* set, (2) sets open->op_stateid, (3) sets open->op_delegation.
*/
status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
+ WARN_ON(status && open->op_created);
out:
nfsd4_cleanup_open_state(open, status);
if (open->op_openowner)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 4dd91283d03..7a2e442623c 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1370,7 +1370,7 @@ __be32
do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
char *fname, int flen, struct iattr *iap,
struct svc_fh *resfhp, int createmode, u32 *verifier,
- int *truncp, int *created)
+ bool *truncp, bool *created)
{
struct dentry *dentry, *dchild = NULL;
struct inode *dirp;
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index 503f3bf11ab..3f54ad03bb2 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -62,7 +62,7 @@ __be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
__be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *,
char *name, int len, struct iattr *attrs,
struct svc_fh *res, int createmode,
- u32 *verifier, int *truncp, int *created);
+ u32 *verifier, bool *truncp, bool *created);
__be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
loff_t, unsigned long);
#endif /* CONFIG_NFSD_V3 */
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index ce8c59196b4..e3057350eea 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -226,7 +226,8 @@ struct nfsd4_open {
u32 op_recall; /* recall */
struct nfsd4_change_info op_cinfo; /* response */
u32 op_rflags; /* response */
- int op_truncate; /* used during processing */
+ bool op_truncate; /* used during processing */
+ bool op_created; /* used during processing */
struct nfs4_openowner *op_openowner; /* used during processing */
struct nfs4_file *op_file; /* used during processing */
struct nfs4_ol_stateid *op_stp; /* used during processing */