a little futzing around with sockets while reading through the linux programming interface book

.gitignore

@@ -1,4 +1,6 @@
-gowrikumar/bin
+*
-gdbtut/bin
+!gowrikumar/bin
-*.i
+!gdbtut/bin
-*.s
+!*.i
+!*.s
+!*.c

Makefile

@@ -4,10 +4,12 @@ RM = rm -v
 CC := gcc
 CFLAGS := -std=c99 -Wall -g
 
+ALL_TARGETS := $(patsubst %.c,%,$(wildcard *.c))
+
 export CD RM CFLAGS
 
 
-all:
+all: $(ALL_TARGETS)
 	$(CD) gowrikumar && $(MAKE)
 	$(CD) gdbtut && $(MAKE)
 

socky.c

@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/un.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+const char *SOCKNAME = "/tmp/socky";
+int sfd;
+struct sockaddr_un addr;
+
+
+int main(int argc, char *argv[])
+{
+    sfd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (sfd == -1) {
+        fprintf(stderr, "FAILED TO ALLOCATE SOCKET\n");
+        goto error;
+    }
+
+    memset(&addr, 0, sizeof(struct sockaddr_un));
+    addr.sun_family = AF_UNIX;
+    strncpy(addr.sun_path, SOCKNAME, sizeof(addr.sun_path) - 1);
+
+    if (bind(sfd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) == -1) {
+        fprintf(stderr, "FAILED TO BIND SOCKET TO ADDRESS\n");
+        goto error;
+    }
+
+    if (listen(sfd, 128) == -1) {
+        fprintf(stderr, "FAILED TO LISTEN ON ADDRESS\n");
+        goto error;
+    }
+
+    for (;;) {
+        fprintf(stdout, "ATTEMPTING TO WAIT FOR REQUEST ON %s\n", SOCKNAME);
+        if (accept(sfd, NULL, NULL) == -1) {
+            fprintf(stderr, "FAILED TO ACCEPT REQUEST ON ADDRESS\n");
+            goto error;
+        }
+    }
+
+    return 0;
+
+error:
+    return 1;
+
+}