[RFC PATCH 11/20] Introduce some socket util functions.

[Yoshiaki Tamura <tamura.yoshiaki@xxxxxxxxxxxxx>]

Signed-off-by: Yoshiaki Tamura <tamura.yoshiaki@xxxxxxxxxxxxx>
---
 osdep.c       |   13 +++++++++++++
 qemu-char.c   |   25 ++++++++++++++++++++++++-
 qemu_socket.h |    4 ++++
 3 files changed, 41 insertions(+), 1 deletions(-)

diff --git a/osdep.c b/osdep.c
index 3bab79a..63444e7 100644
--- a/osdep.c
+++ b/osdep.c
@@ -201,6 +201,12 @@ void socket_set_nonblock(int fd)
     ioctlsocket(fd, FIONBIO, &opt);
 }
 
+void socket_set_block(int fd)
+{
+    unsigned long opt = 0;
+    ioctlsocket(fd, FIONBIO, &opt);
+}
+
 int inet_aton(const char *cp, struct in_addr *ia)
 {
     uint32_t addr = inet_addr(cp);
@@ -223,6 +229,13 @@ void socket_set_nonblock(int fd)
     fcntl(fd, F_SETFL, f | O_NONBLOCK);
 }
 
+void socket_set_block(int fd)
+{
+    int f;
+    f = fcntl(fd, F_GETFL);
+    fcntl(fd, F_SETFL, f & ~O_NONBLOCK);
+}
+
 void qemu_set_cloexec(int fd)
 {
     int f;
diff --git a/qemu-char.c b/qemu-char.c
index 4169492..ccdf394 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2092,12 +2092,35 @@ static void tcp_chr_telnet_init(int fd)
     send(fd, (char *)buf, 3, 0);
 }
 
-static void socket_set_nodelay(int fd)
+void socket_set_delay(int fd)
+{
+    int val = 0;
+    setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
+}
+
+void socket_set_nodelay(int fd)
 {
     int val = 1;
     setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
 }
 
+void socket_set_timeout(int fd, int s)
+{
+    struct timeval tv = {
+        .tv_sec = s,
+        .tv_usec = 0
+    };
+    /* Set socket_timeout */
+    if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO,
+                   &tv, sizeof(tv)) < 0) {
+        fprintf(stderr, "failed to set SO_RCVTIMEO\n");
+    }
+    if (setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO,
+                   &tv, sizeof(tv)) < 0) {
+        fprintf(stderr, "fialed to set SO_SNDTIMEO\n");
+    }
+}
+
 static void tcp_chr_accept(void *opaque)
 {
     CharDriverState *chr = opaque;
diff --git a/qemu_socket.h b/qemu_socket.h
index 7ee46ac..8eae465 100644
--- a/qemu_socket.h
+++ b/qemu_socket.h
@@ -35,6 +35,10 @@ int inet_aton(const char *cp, struct in_addr *ia);
 int qemu_socket(int domain, int type, int protocol);
 int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
 void socket_set_nonblock(int fd);
+void socket_set_block(int fd);
+void socket_set_nodelay(int fd);
+void socket_set_delay(int fd);
+void socket_set_timeout(int fd, int s);
 int send_all(int fd, const void *buf, int len1);
 
 /* New, ipv6-ready socket helper functions, see qemu-sockets.c */
-- 
1.7.0.31.g1df487

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