unfs3: Add a NFSv3 user mode server for use with runqemu

The user mode nfs server allows the use of runqemu without any root
privileges and may even be accelerated with kvm.

Example:

runqemu-extract-sdk tmp-eglibc/deploy/images/qemux86-64/core-image-minimal-qemux86-64.tar.bz2 rootfs

runqemu qemux86-64 `pwd`/rootfs nographic slirp kvm

[YOCTO #5639]

(From OE-Core rev: 24183f5ec9c71db936e75060387941463d30d962)

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/meta/recipes-devtools/unfs3/unfs3/tcp_no_delay.patch b/meta/recipes-devtools/unfs3/unfs3/tcp_no_delay.patch
new file mode 100644
index 0000000..bc78dee
--- /dev/null
+++ b/meta/recipes-devtools/unfs3/unfs3/tcp_no_delay.patch
@@ -0,0 +1,56 @@
+daemon.c: Add option for tcp no delay
+
+Allow the NFS tcp sockets to conditionally use TCP_NODELAY
+
+Upstream-Status: Pending
+
+---
+ daemon.c |    9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+--- a/daemon.c
++++ b/daemon.c
+@@ -17,6 +17,7 @@
+ #ifndef WIN32
+ #include <sys/socket.h>
+ #include <netinet/in.h>
++#include <netinet/tcp.h>
+ #include <arpa/inet.h>
+ #include <syslog.h>
+ #else				       /* WIN32 */
+@@ -75,6 +76,7 @@ unsigned int opt_mount_port = NFS_PORT;
+ int opt_singleuser = FALSE;
+ int opt_brute_force = FALSE;
+ int opt_testconfig = FALSE;
++int opt_tcp_nodelay = FALSE;
+ struct in_addr opt_bind_addr;
+ int opt_readable_executables = FALSE;
+ char *opt_pid_file = NULL;
+@@ -208,7 +210,7 @@ static void parse_options(int argc, char
+ {
+ 
+     int opt = 0;
+-    char *optstring = "bcC:de:hl:m:n:prstTuwi:x:y:";
++    char *optstring = "bcC:de:hl:m:Nn:prstTuwi:x:y:";
+ 
+     while (opt != -1) {
+ 	opt = getopt(argc, argv, optstring);
+@@ -295,6 +297,9 @@ static void parse_options(int argc, char
+ 		    exit(1);
+ 		}
+ 		break;
++	    case 'N':
++		opt_tcp_nodelay = TRUE;
++		break;
+ 	    case 'n':
+ 		opt_nfs_port = strtol(optarg, NULL, 10);
+ 		if (opt_nfs_port == 0) {
+@@ -802,6 +807,8 @@ static SVCXPRT *create_tcp_transport(uns
+ 	sin.sin_addr.s_addr = opt_bind_addr.s_addr;
+ 	sock = socket(PF_INET, SOCK_STREAM, 0);
+ 	setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const char *) &on, sizeof(on));
++	if (opt_tcp_nodelay)
++	    setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+ 	if (bind(sock, (struct sockaddr *) &sin, sizeof(struct sockaddr))) {
+ 	    perror("bind");
+ 	    fprintf(stderr, "Couldn't bind to tcp port %d\n", port);