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authorLinus Torvalds <torvalds@linux-foundation.org>2018-02-08 15:18:32 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-08 15:18:32 -0800
commitf1517df8701c9f12dae9ce7f43a5d300a6917619 (patch)
treeb7ba72e70fcdf17306d2a488b5b245e578ad52aa /fs
parent9d21874da8ec0e0043c85cde8dda173e74ffc24d (diff)
parent175e03101d36c3034f3c80038d4c28838351a7f2 (diff)
Merge tag 'nfsd-4.16' of git://linux-nfs.org/~bfields/linux
Pull nfsd update from Bruce Fields: "A fairly small update this time around. Some cleanup, RDMA fixes, overlayfs fixes, and a fix for an NFSv4 state bug. The bigger deal for nfsd this time around was Jeff Layton's already-merged i_version patches" * tag 'nfsd-4.16' of git://linux-nfs.org/~bfields/linux: svcrdma: Fix Read chunk round-up NFSD: hide unused svcxdr_dupstr() nfsd: store stat times in fill_pre_wcc() instead of inode times nfsd: encode stat->mtime for getattr instead of inode->i_mtime nfsd: return RESOURCE not GARBAGE_ARGS on too many ops nfsd4: don't set lock stateid's sc_type to CLOSED nfsd: Detect unhashed stids in nfsd4_verify_open_stid() sunrpc: remove dead code in svc_sock_setbufsize svcrdma: Post Receives in the Receive completion handler nfsd4: permit layoutget of executable-only files lockd: convert nlm_rqst.a_count from atomic_t to refcount_t lockd: convert nlm_lockowner.count from atomic_t to refcount_t lockd: convert nsm_handle.sm_count from atomic_t to refcount_t
Diffstat (limited to 'fs')
-rw-r--r--fs/locks.c6
-rw-r--r--fs/nfsd/nfs3xdr.c31
-rw-r--r--fs/nfsd/nfs4proc.c9
-rw-r--r--fs/nfsd/nfs4state.c6
-rw-r--r--fs/nfsd/nfs4xdr.c16
-rw-r--r--fs/nfsd/nfsfh.h28
-rw-r--r--fs/nfsd/nfsxdr.c1
7 files changed, 57 insertions, 40 deletions
diff --git a/fs/locks.c b/fs/locks.c
index 21b4dfa289ee..d6ff4beb70ce 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1554,9 +1554,9 @@ out:
EXPORT_SYMBOL(__break_lease);
/**
- * lease_get_mtime - get the last modified time of an inode
+ * lease_get_mtime - update modified time of an inode with exclusive lease
* @inode: the inode
- * @time: pointer to a timespec which will contain the last modified time
+ * @time: pointer to a timespec which contains the last modified time
*
* This is to force NFS clients to flush their caches for files with
* exclusive leases. The justification is that if someone has an
@@ -1580,8 +1580,6 @@ void lease_get_mtime(struct inode *inode, struct timespec *time)
if (has_lease)
*time = current_time(inode);
- else
- *time = inode->i_mtime;
}
EXPORT_SYMBOL(lease_get_mtime);
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 2758480555fa..1a70581e1cb2 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -251,6 +251,34 @@ encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
}
/*
+ * Fill in the pre_op attr for the wcc data
+ */
+void fill_pre_wcc(struct svc_fh *fhp)
+{
+ struct inode *inode;
+ struct kstat stat;
+ __be32 err;
+
+ if (fhp->fh_pre_saved)
+ return;
+
+ inode = d_inode(fhp->fh_dentry);
+ err = fh_getattr(fhp, &stat);
+ if (err) {
+ /* Grab the times from inode anyway */
+ stat.mtime = inode->i_mtime;
+ stat.ctime = inode->i_ctime;
+ stat.size = inode->i_size;
+ }
+
+ fhp->fh_pre_mtime = stat.mtime;
+ fhp->fh_pre_ctime = stat.ctime;
+ fhp->fh_pre_size = stat.size;
+ fhp->fh_pre_change = nfsd4_change_attribute(&stat, inode);
+ fhp->fh_pre_saved = true;
+}
+
+/*
* Fill in the post_op attr for the wcc data
*/
void fill_post_wcc(struct svc_fh *fhp)
@@ -261,7 +289,8 @@ void fill_post_wcc(struct svc_fh *fhp)
printk("nfsd: inode locked twice during operation.\n");
err = fh_getattr(fhp, &fhp->fh_post_attr);
- fhp->fh_post_change = nfsd4_change_attribute(d_inode(fhp->fh_dentry));
+ fhp->fh_post_change = nfsd4_change_attribute(&fhp->fh_post_attr,
+ d_inode(fhp->fh_dentry));
if (err) {
fhp->fh_post_saved = false;
/* Grab the ctime anyway - set_change_info might use it */
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 008ea0b627d0..a0bed2b2004d 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1363,14 +1363,14 @@ nfsd4_layoutget(struct svc_rqst *rqstp,
const struct nfsd4_layout_ops *ops;
struct nfs4_layout_stateid *ls;
__be32 nfserr;
- int accmode;
+ int accmode = NFSD_MAY_READ_IF_EXEC;
switch (lgp->lg_seg.iomode) {
case IOMODE_READ:
- accmode = NFSD_MAY_READ;
+ accmode |= NFSD_MAY_READ;
break;
case IOMODE_RW:
- accmode = NFSD_MAY_READ | NFSD_MAY_WRITE;
+ accmode |= NFSD_MAY_READ | NFSD_MAY_WRITE;
break;
default:
dprintk("%s: invalid iomode %d\n",
@@ -1703,6 +1703,9 @@ nfsd4_proc_compound(struct svc_rqst *rqstp)
status = nfserr_minor_vers_mismatch;
if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0)
goto out;
+ status = nfserr_resource;
+ if (args->opcnt > NFSD_MAX_OPS_PER_COMPOUND)
+ goto out;
status = nfs41_check_op_ordering(args);
if (status) {
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b29b5a185a2c..150521c9671b 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3590,6 +3590,7 @@ nfsd4_verify_open_stid(struct nfs4_stid *s)
switch (s->sc_type) {
default:
break;
+ case 0:
case NFS4_CLOSED_STID:
case NFS4_CLOSED_DELEG_STID:
ret = nfserr_bad_stateid;
@@ -5182,7 +5183,6 @@ nfsd4_free_lock_stateid(stateid_t *stateid, struct nfs4_stid *s)
lockowner(stp->st_stateowner)))
goto out;
- stp->st_stid.sc_type = NFS4_CLOSED_STID;
release_lock_stateid(stp);
ret = nfs_ok;
@@ -6078,10 +6078,8 @@ out:
* If this is a new, never-before-used stateid, and we are
* returning an error, then just go ahead and release it.
*/
- if (status && new) {
- lock_stp->st_stid.sc_type = NFS4_CLOSED_STID;
+ if (status && new)
release_lock_stateid(lock_stp);
- }
mutex_unlock(&lock_stp->st_mutex);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 2c61c6b8ae09..e502fd16246b 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -455,8 +455,8 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
}
label->len = 0;
-#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
- if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
+ if (IS_ENABLED(CONFIG_NFSD_V4_SECURITY_LABEL) &&
+ bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
READ_BUF(4);
len += 4;
dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */
@@ -476,7 +476,6 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
if (!label->data)
return nfserr_jukebox;
}
-#endif
if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
if (!umask)
goto xdr_error;
@@ -1918,8 +1917,13 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
if (argp->taglen > NFSD4_MAX_TAGLEN)
goto xdr_error;
- if (argp->opcnt > 100)
- goto xdr_error;
+ /*
+ * NFS4ERR_RESOURCE is a more helpful error than GARBAGE_ARGS
+ * here, so we return success at the xdr level so that
+ * nfsd4_proc can handle this is an NFS-level error.
+ */
+ if (argp->opcnt > NFSD_MAX_OPS_PER_COMPOUND)
+ return 0;
if (argp->opcnt > ARRAY_SIZE(argp->iops)) {
argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL);
@@ -1991,7 +1995,7 @@ static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode,
*p++ = cpu_to_be32(convert_to_wallclock(exp->cd->flush_time));
*p++ = 0;
} else if (IS_I_VERSION(inode)) {
- p = xdr_encode_hyper(p, nfsd4_change_attribute(inode));
+ p = xdr_encode_hyper(p, nfsd4_change_attribute(stat, inode));
} else {
*p++ = cpu_to_be32(stat->ctime.tv_sec);
*p++ = cpu_to_be32(stat->ctime.tv_nsec);
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index b8444189223b..755e256a9103 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -253,36 +253,20 @@ fh_clear_wcc(struct svc_fh *fhp)
* By using both ctime and the i_version counter we guarantee that as
* long as time doesn't go backwards we never reuse an old value.
*/
-static inline u64 nfsd4_change_attribute(struct inode *inode)
+static inline u64 nfsd4_change_attribute(struct kstat *stat,
+ struct inode *inode)
{
u64 chattr;
- chattr = inode->i_ctime.tv_sec;
+ chattr = stat->ctime.tv_sec;
chattr <<= 30;
- chattr += inode->i_ctime.tv_nsec;
+ chattr += stat->ctime.tv_nsec;
chattr += inode_query_iversion(inode);
return chattr;
}
-/*
- * Fill in the pre_op attr for the wcc data
- */
-static inline void
-fill_pre_wcc(struct svc_fh *fhp)
-{
- struct inode *inode;
-
- inode = d_inode(fhp->fh_dentry);
- if (!fhp->fh_pre_saved) {
- fhp->fh_pre_mtime = inode->i_mtime;
- fhp->fh_pre_ctime = inode->i_ctime;
- fhp->fh_pre_size = inode->i_size;
- fhp->fh_pre_change = nfsd4_change_attribute(inode);
- fhp->fh_pre_saved = true;
- }
-}
-
-extern void fill_post_wcc(struct svc_fh *);
+extern void fill_pre_wcc(struct svc_fh *fhp);
+extern void fill_post_wcc(struct svc_fh *fhp);
#else
#define fh_clear_wcc(ignored)
#define fill_pre_wcc(ignored)
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 644a0342f0e0..79b6064f8977 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -188,6 +188,7 @@ encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
*p++ = htonl((u32) stat->ino);
*p++ = htonl((u32) stat->atime.tv_sec);
*p++ = htonl(stat->atime.tv_nsec ? stat->atime.tv_nsec / 1000 : 0);
+ time = stat->mtime;
lease_get_mtime(d_inode(dentry), &time);
*p++ = htonl((u32) time.tv_sec);
*p++ = htonl(time.tv_nsec ? time.tv_nsec / 1000 : 0);