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-rw-r--r--fs/nfsd/nfs4recover.c2
-rw-r--r--fs/nfsd/nfs4state.c33
-rw-r--r--include/linux/sunrpc/cache.h22
-rw-r--r--include/linux/sunrpc/svc.h1
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_upcall.c26
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_xdr.c41
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_xdr.h5
7 files changed, 91 insertions, 39 deletions
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 105a3b0..e0a65a9 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -173,8 +173,6 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
int status;
struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);
- dprintk("NFSD: nfsd4_create_clid_dir for \"%s\"\n", dname);
-
if (test_and_set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
return;
if (!nn->rec_file)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 43f4229..0874998 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -368,11 +368,8 @@ static struct nfs4_delegation *
alloc_init_deleg(struct nfs4_client *clp, struct nfs4_ol_stateid *stp, struct svc_fh *current_fh)
{
struct nfs4_delegation *dp;
- struct nfs4_file *fp = stp->st_file;
dprintk("NFSD alloc_init_deleg\n");
- if (fp->fi_had_conflict)
- return NULL;
if (num_delegations > max_delegations)
return NULL;
dp = delegstateid(nfs4_alloc_stid(clp, deleg_slab));
@@ -389,8 +386,7 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_ol_stateid *stp, struct sv
INIT_LIST_HEAD(&dp->dl_perfile);
INIT_LIST_HEAD(&dp->dl_perclnt);
INIT_LIST_HEAD(&dp->dl_recall_lru);
- get_nfs4_file(fp);
- dp->dl_file = fp;
+ dp->dl_file = NULL;
dp->dl_type = NFS4_OPEN_DELEGATE_READ;
fh_copy_shallow(&dp->dl_fh, &current_fh->fh_handle);
dp->dl_time = 0;
@@ -3035,7 +3031,7 @@ static int nfs4_setlease(struct nfs4_delegation *dp)
if (status) {
list_del_init(&dp->dl_perclnt);
locks_free_lock(fl);
- return -ENOMEM;
+ return status;
}
fp->fi_lease = fl;
fp->fi_deleg_file = get_file(fl->fl_file);
@@ -3044,22 +3040,35 @@ static int nfs4_setlease(struct nfs4_delegation *dp)
return 0;
}
-static int nfs4_set_delegation(struct nfs4_delegation *dp)
+static int nfs4_set_delegation(struct nfs4_delegation *dp, struct nfs4_file *fp)
{
- struct nfs4_file *fp = dp->dl_file;
+ int status;
- if (!fp->fi_lease)
- return nfs4_setlease(dp);
+ if (fp->fi_had_conflict)
+ return -EAGAIN;
+ get_nfs4_file(fp);
+ dp->dl_file = fp;
+ if (!fp->fi_lease) {
+ status = nfs4_setlease(dp);
+ if (status)
+ goto out_free;
+ return 0;
+ }
spin_lock(&recall_lock);
if (fp->fi_had_conflict) {
spin_unlock(&recall_lock);
- return -EAGAIN;
+ status = -EAGAIN;
+ goto out_free;
}
atomic_inc(&fp->fi_delegees);
list_add(&dp->dl_perfile, &fp->fi_delegations);
spin_unlock(&recall_lock);
list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
return 0;
+out_free:
+ put_nfs4_file(fp);
+ dp->dl_file = fp;
+ return status;
}
static void nfsd4_open_deleg_none_ext(struct nfsd4_open *open, int status)
@@ -3134,7 +3143,7 @@ nfs4_open_delegation(struct net *net, struct svc_fh *fh,
dp = alloc_init_deleg(oo->oo_owner.so_client, stp, fh);
if (dp == NULL)
goto out_no_deleg;
- status = nfs4_set_delegation(dp);
+ status = nfs4_set_delegation(dp, stp->st_file);
if (status)
goto out_free;
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 6ce690d..437ddb6 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -264,12 +264,30 @@ static inline int get_uint(char **bpp, unsigned int *anint)
return 0;
}
+static inline int get_time(char **bpp, time_t *time)
+{
+ char buf[50];
+ long long ll;
+ int len = qword_get(bpp, buf, sizeof(buf));
+
+ if (len < 0)
+ return -EINVAL;
+ if (len == 0)
+ return -ENOENT;
+
+ if (kstrtoll(buf, 0, &ll))
+ return -EINVAL;
+
+ *time = (time_t)ll;
+ return 0;
+}
+
static inline time_t get_expiry(char **bpp)
{
- int rv;
+ time_t rv;
struct timespec boot;
- if (get_int(bpp, &rv))
+ if (get_time(bpp, &rv))
return 0;
if (rv < 0)
return 0;
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 1f0216b..6eecfc2 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -243,7 +243,6 @@ struct svc_rqst {
struct xdr_buf rq_res;
struct page * rq_pages[RPCSVC_MAXPAGES];
struct page * *rq_respages; /* points into rq_pages */
- int rq_resused; /* number of pages used for result */
struct page * *rq_next_page; /* next reply page to use */
struct kvec rq_vec[RPCSVC_MAXPAGES]; /* generally useful.. */
diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c
index af7ffd4..f1eb0d1 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.c
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c
@@ -213,6 +213,26 @@ static int gssp_call(struct net *net, struct rpc_message *msg)
return status;
}
+static void gssp_free_receive_pages(struct gssx_arg_accept_sec_context *arg)
+{
+ int i;
+
+ for (i = 0; i < arg->npages && arg->pages[i]; i++)
+ __free_page(arg->pages[i]);
+}
+
+static int gssp_alloc_receive_pages(struct gssx_arg_accept_sec_context *arg)
+{
+ arg->npages = DIV_ROUND_UP(NGROUPS_MAX * 4, PAGE_SIZE);
+ arg->pages = kzalloc(arg->npages * sizeof(struct page *), GFP_KERNEL);
+ /*
+ * XXX: actual pages are allocated by xdr layer in
+ * xdr_partial_copy_from_skb.
+ */
+ if (!arg->pages)
+ return -ENOMEM;
+ return 0;
+}
/*
* Public functions
@@ -261,10 +281,16 @@ int gssp_accept_sec_context_upcall(struct net *net,
arg.context_handle = &ctxh;
res.output_token->len = GSSX_max_output_token_sz;
+ ret = gssp_alloc_receive_pages(&arg);
+ if (ret)
+ return ret;
+
/* use nfs/ for targ_name ? */
ret = gssp_call(net, &msg);
+ gssp_free_receive_pages(&arg);
+
/* we need to fetch all data even in case of error so
* that we can free special strctures is they have been allocated */
data->major_status = res.status.major_status;
diff --git a/net/sunrpc/auth_gss/gss_rpc_xdr.c b/net/sunrpc/auth_gss/gss_rpc_xdr.c
index 3c85d1c..f0f78c5 100644
--- a/net/sunrpc/auth_gss/gss_rpc_xdr.c
+++ b/net/sunrpc/auth_gss/gss_rpc_xdr.c
@@ -166,14 +166,15 @@ static int dummy_dec_opt_array(struct xdr_stream *xdr,
return 0;
}
-static int get_s32(void **p, void *max, s32 *res)
+static int get_host_u32(struct xdr_stream *xdr, u32 *res)
{
- void *base = *p;
- void *next = (void *)((char *)base + sizeof(s32));
- if (unlikely(next > max || next < base))
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (!p)
return -EINVAL;
- memcpy(res, base, sizeof(s32));
- *p = next;
+ /* Contents of linux creds are all host-endian: */
+ memcpy(res, p, sizeof(u32));
return 0;
}
@@ -182,9 +183,9 @@ static int gssx_dec_linux_creds(struct xdr_stream *xdr,
{
u32 length;
__be32 *p;
- void *q, *end;
- s32 tmp;
- int N, i, err;
+ u32 tmp;
+ u32 N;
+ int i, err;
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
@@ -192,33 +193,28 @@ static int gssx_dec_linux_creds(struct xdr_stream *xdr,
length = be32_to_cpup(p);
- /* FIXME: we do not want to use the scratch buffer for this one
- * may need to use functions that allows us to access an io vector
- * directly */
- p = xdr_inline_decode(xdr, length);
- if (unlikely(p == NULL))
+ if (length > (3 + NGROUPS_MAX) * sizeof(u32))
return -ENOSPC;
- q = p;
- end = q + length;
-
/* uid */
- err = get_s32(&q, end, &tmp);
+ err = get_host_u32(xdr, &tmp);
if (err)
return err;
creds->cr_uid = make_kuid(&init_user_ns, tmp);
/* gid */
- err = get_s32(&q, end, &tmp);
+ err = get_host_u32(xdr, &tmp);
if (err)
return err;
creds->cr_gid = make_kgid(&init_user_ns, tmp);
/* number of additional gid's */
- err = get_s32(&q, end, &tmp);
+ err = get_host_u32(xdr, &tmp);
if (err)
return err;
N = tmp;
+ if ((3 + N) * sizeof(u32) != length)
+ return -EINVAL;
creds->cr_group_info = groups_alloc(N);
if (creds->cr_group_info == NULL)
return -ENOMEM;
@@ -226,7 +222,7 @@ static int gssx_dec_linux_creds(struct xdr_stream *xdr,
/* gid's */
for (i = 0; i < N; i++) {
kgid_t kgid;
- err = get_s32(&q, end, &tmp);
+ err = get_host_u32(xdr, &tmp);
if (err)
goto out_free_groups;
err = -EINVAL;
@@ -784,6 +780,9 @@ void gssx_enc_accept_sec_context(struct rpc_rqst *req,
/* arg->options */
err = dummy_enc_opt_array(xdr, &arg->options);
+ xdr_inline_pages(&req->rq_rcv_buf,
+ PAGE_SIZE/2 /* pretty arbitrary */,
+ arg->pages, 0 /* page base */, arg->npages * PAGE_SIZE);
done:
if (err)
dprintk("RPC: gssx_enc_accept_sec_context: %d\n", err);
diff --git a/net/sunrpc/auth_gss/gss_rpc_xdr.h b/net/sunrpc/auth_gss/gss_rpc_xdr.h
index 1c98b27..685a688 100644
--- a/net/sunrpc/auth_gss/gss_rpc_xdr.h
+++ b/net/sunrpc/auth_gss/gss_rpc_xdr.h
@@ -147,6 +147,8 @@ struct gssx_arg_accept_sec_context {
struct gssx_cb *input_cb;
u32 ret_deleg_cred;
struct gssx_option_array options;
+ struct page **pages;
+ unsigned int npages;
};
struct gssx_res_accept_sec_context {
@@ -240,7 +242,8 @@ int gssx_dec_accept_sec_context(struct rpc_rqst *rqstp,
2 * GSSX_max_princ_sz + \
8 + 8 + 4 + 4 + 4)
#define GSSX_max_output_token_sz 1024
-#define GSSX_max_creds_sz (4 + 4 + 4 + NGROUPS_MAX * 4)
+/* grouplist not included; we allocate separate pages for that: */
+#define GSSX_max_creds_sz (4 + 4 + 4 /* + NGROUPS_MAX*4 */)
#define GSSX_RES_accept_sec_context_sz (GSSX_default_status_sz + \
GSSX_default_ctx_sz + \
GSSX_max_output_token_sz + \
generated by cgit v0.10.2 at 2024-11-10 18:04:53 (GMT)