[PATCH v2 03/10] NFSD fill-in netloc4 structure

Olga Kornievskaia
2018-11-30T20:03:59Z

nfs.4 defines nfs42_netaddr structure that represents netloc4.

Populate needed fields from the sockaddr structure.

This will be used by flexfiles and 4.2 inter copy

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
---
fs/nfsd/nfsd.h | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 0668999..a8fec63 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -18,6 +18,7 @@
#include <linux/nfs4.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/msg_prot.h>
+#include <linux/sunrpc/addr.h>

#include <uapi/linux/nfsd/debug.h>

@@ -366,6 +367,37 @@ static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)

extern const u32 nfsd_suppattrs[3][3];

+static inline u32 nfsd4_set_netaddr(struct sockaddr *addr,
+ struct nfs42_netaddr *netaddr)
+{
+ struct sockaddr_in *sin = (struct sockaddr_in *)addr;
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
+ unsigned int port;
+ size_t ret_addr, ret_port;
+
+ switch (addr->sa_family) {
+ case AF_INET:
+ port = ntohs(sin->sin_port);
+ sprintf(netaddr->netid, "tcp");
+ netaddr->netid_len = 3;
+ break;
+ case AF_INET6:
+ port = ntohs(sin6->sin6_port);
+ sprintf(netaddr->netid, "tcp6");
+ netaddr->netid_len = 4;
+ break;
+ default:
+ return nfserr_inval;
+ }
+ ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr));
+ ret_port = snprintf(netaddr->addr + ret_addr,
+ RPCBIND_MAXUADDRLEN + 1 - ret_addr,
+ ".%u.%u", port >> 8, port & 0xff);
+ WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr);
+ netaddr->addr_len = ret_addr + ret_port;
+ return 0;
+}
+
static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2)
{
return !((bm1[0] & ~bm2[0]) ||
--
1.8.3.1