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authorwdenk <wdenk>2004-09-08 22:03:11 +0000
committerwdenk <wdenk>2004-09-08 22:03:11 +0000
commiteedcd078fe1434d93b84322c4e14c52f80282a41 (patch)
tree0dd7b16045dd41fbda926f929f1d7cf8edbd2ae0 /tools/ncb.c
parent7ca202f566a6e9dc3d0dd0216e82ad1a48f50f19 (diff)
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* Patch by Detlev Zundel, 08 Sep 2004:
Update etags build target * Improve NetConsole support: add support for broadcast destination address and buffered input. * Cleanup compiler warnings for GCC 3.3.x and later * Fix problem in cmd_jffs2.c introduced by CFG_JFFS_SINGLE_PART patch
Diffstat (limited to 'tools/ncb.c')
-rw-r--r--tools/ncb.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/tools/ncb.c b/tools/ncb.c
new file mode 100644
index 0000000..74deebb
--- /dev/null
+++ b/tools/ncb.c
@@ -0,0 +1,36 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <linux/in.h>
+
+int main (int argc, char *argv[])
+{
+ int s, len, o, port = 6666;
+ char buf[512];
+ struct sockaddr_in addr;
+ int addr_len = sizeof addr;
+
+ if (argc > 1)
+ port = atoi (argv[1]);
+
+ s = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
+
+ o = 1;
+ len = 4;
+ setsockopt (3, SOL_SOCKET, SO_REUSEADDR, &o, len);
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons (port);
+ addr.sin_addr.s_addr = INADDR_ANY; /* receive broadcasts */
+
+ bind (s, (struct sockaddr *) &addr, sizeof addr);
+
+ for (;;) {
+ len = recvfrom (s, buf, sizeof buf, 0, (struct sockaddr *) &addr, &addr_len);
+ if (len < 0)
+ break;
+ write (1, buf, len);
+ }
+
+ return 0;
+}