5.10-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit 7cf96b6d0104b12aa30961901879e428884b1695 ]
Signed-off-by: Chuck Lever chuck.lever@oracle.com Signed-off-by: J. Bruce Fields bfields@redhat.com Signed-off-by: Chuck Lever chuck.lever@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/lockd/xdr4.c | 99 +++++++++++++------------------------------------ 1 file changed, 26 insertions(+), 73 deletions(-)
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c index 2dbf82c2726be..e6bab1d1e41fb 100644 --- a/fs/lockd/xdr4.c +++ b/fs/lockd/xdr4.c @@ -42,37 +42,6 @@ loff_t_to_s64(loff_t offset) return res; }
-/* - * XDR functions for basic NLM types - */ -static __be32 * -nlm4_decode_cookie(__be32 *p, struct nlm_cookie *c) -{ - unsigned int len; - - len = ntohl(*p++); - - if(len==0) - { - c->len=4; - memset(c->data, 0, 4); /* hockeypux brain damage */ - } - else if(len<=NLM_MAXCOOKIELEN) - { - c->len=len; - memcpy(c->data, p, len); - p+=XDR_QUADLEN(len); - } - else - { - dprintk("lockd: bad cookie size %d (only cookies under " - "%d bytes are supported.)\n", - len, NLM_MAXCOOKIELEN); - return NULL; - } - return p; -} - static __be32 * nlm4_encode_cookie(__be32 *p, struct nlm_cookie *c) { @@ -82,20 +51,6 @@ nlm4_encode_cookie(__be32 *p, struct nlm_cookie *c) return p; }
-static __be32 * -nlm4_decode_fh(__be32 *p, struct nfs_fh *f) -{ - memset(f->data, 0, sizeof(f->data)); - f->size = ntohl(*p++); - if (f->size > NFS_MAXFHSIZE) { - dprintk("lockd: bad fhandle size %d (should be <=%d)\n", - f->size, NFS_MAXFHSIZE); - return NULL; - } - memcpy(f->data, p, f->size); - return p + XDR_QUADLEN(f->size); -} - /* * NLM file handles are defined by specification to be a variable-length * XDR opaque no longer than 1024 bytes. However, this implementation @@ -122,15 +77,6 @@ svcxdr_decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh) return true; }
-/* - * Encode and decode owner handle - */ -static __be32 * -nlm4_decode_oh(__be32 *p, struct xdr_netobj *oh) -{ - return xdr_decode_netobj(p, oh); -} - static bool svcxdr_decode_lock(struct xdr_stream *xdr, struct nlm_lock *lock) { @@ -335,35 +281,42 @@ nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p) return 1; }
-int -nlm4svc_encode_testres(struct svc_rqst *rqstp, __be32 *p) -{ - struct nlm_res *resp = rqstp->rq_resp; - - if (!(p = nlm4_encode_testres(p, resp))) - return 0; - return xdr_ressize_check(rqstp, p); -} - int nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p) { + struct xdr_stream *xdr = &rqstp->rq_arg_stream; struct nlm_args *argp = rqstp->rq_argp; struct nlm_lock *lock = &argp->lock;
memset(lock, 0, sizeof(*lock)); locks_init_lock(&lock->fl); - lock->svid = ~(u32) 0; + lock->svid = ~(u32)0;
- if (!(p = nlm4_decode_cookie(p, &argp->cookie)) - || !(p = xdr_decode_string_inplace(p, &lock->caller, - &lock->len, NLM_MAXSTRLEN)) - || !(p = nlm4_decode_fh(p, &lock->fh)) - || !(p = nlm4_decode_oh(p, &lock->oh))) + if (!svcxdr_decode_cookie(xdr, &argp->cookie)) return 0; - argp->fsm_mode = ntohl(*p++); - argp->fsm_access = ntohl(*p++); - return xdr_argsize_check(rqstp, p); + if (!svcxdr_decode_string(xdr, &lock->caller, &lock->len)) + return 0; + if (!svcxdr_decode_fhandle(xdr, &lock->fh)) + return 0; + if (!svcxdr_decode_owner(xdr, &lock->oh)) + return 0; + /* XXX: Range checks are missing in the original code */ + if (xdr_stream_decode_u32(xdr, &argp->fsm_mode) < 0) + return 0; + if (xdr_stream_decode_u32(xdr, &argp->fsm_access) < 0) + return 0; + + return 1; +} + +int +nlm4svc_encode_testres(struct svc_rqst *rqstp, __be32 *p) +{ + struct nlm_res *resp = rqstp->rq_resp; + + if (!(p = nlm4_encode_testres(p, resp))) + return 0; + return xdr_ressize_check(rqstp, p); }
int