Use different accept handlers for TCP and unix socket connections

src/anet.c

@@ -307,15 +307,10 @@ int anetUnixServer(char *err, char *path)
     return s;
 }
 
-int anetAccept(char *err, int serversock, char *ip, int *port)
-{
+static int anetGenericAccept(char *err, int s, struct sockaddr *sa, socklen_t *len) {
     int fd;
-    struct sockaddr_in sa;
-    unsigned int saLen;
-
     while(1) {
-        saLen = sizeof(sa);
-        fd = accept(serversock, (struct sockaddr*)&sa, &saLen);
+        fd = accept(s,sa,len);
         if (fd == -1) {
             if (errno == EINTR)
                 continue;
@@ -326,7 +321,31 @@ int anetAccept(char *err, int serversock, char *ip, int *port)
         }
         break;
     }
+    return fd;
+}
+
+int anetTcpAccept(char *err, int s, char *ip, int *port) {
+    int fd;
+    struct sockaddr_in sa;
+    socklen_t salen = sizeof(sa);
+    if ((fd = anetGenericAccept(err,s,(struct sockaddr*)&sa,&salen)) == ANET_ERR)
+        return ANET_ERR;
+
     if (ip) strcpy(ip,inet_ntoa(sa.sin_addr));
     if (port) *port = ntohs(sa.sin_port);
     return fd;
 }
+
+int anetUnixAccept(char *err, int s, char *path, int len) {
+    int fd;
+    struct sockaddr_un sa;
+    socklen_t salen = sizeof(sa);
+    if ((fd = anetGenericAccept(err,s,(struct sockaddr*)&sa,&salen)) == ANET_ERR)
+        return ANET_ERR;
+
+    if (path) {
+        strncpy(path,sa.sun_path,len-1);
+        path[len-1] = 0;
+    }
+    return fd;
+}

src/anet.h

@@ -43,7 +43,8 @@ int anetRead(int fd, char *buf, int count);
 int anetResolve(char *err, char *host, char *ipbuf);
 int anetTcpServer(char *err, int port, char *bindaddr);
 int anetUnixServer(char *err, char *path);
-int anetAccept(char *err, int serversock, char *ip, int *port);
+int anetTcpAccept(char *err, int serversock, char *ip, int *port);
+int anetUnixAccept(char *err, int serversock, char *path, int len);
 int anetWrite(int fd, char *buf, int count);
 int anetNonBlock(char *err, int fd);
 int anetTcpNoDelay(char *err, int fd);

src/networking.c

@@ -157,23 +157,11 @@ void addReplyBulkCString(redisClient *c, char *s) {
     }
 }
 
-void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
-    int cport, cfd;
-    char cip[128];
+static void acceptCommonHandler(int fd) {
     redisClient *c;
-    REDIS_NOTUSED(el);
-    REDIS_NOTUSED(mask);
-    REDIS_NOTUSED(privdata);
-
-    cfd = anetAccept(server.neterr, fd, cip, &cport);
-    if (cfd == AE_ERR) {
-        redisLog(REDIS_VERBOSE,"Accepting client connection: %s", server.neterr);
-        return;
-    }
-    redisLog(REDIS_VERBOSE,"Accepted %s:%d", cip, cport);
-    if ((c = createClient(cfd)) == NULL) {
+    if ((c = createClient(fd)) == NULL) {
         redisLog(REDIS_WARNING,"Error allocating resoures for the client");
-        close(cfd); /* May be already closed, just ingore errors */
+        close(fd); /* May be already closed, just ingore errors */
         return;
     }
     /* If maxclient directive is set and this is one client more... close the
@@ -193,6 +181,39 @@ void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
     server.stat_numconnections++;
 }
 
+void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
+    int cport, cfd;
+    char cip[128];
+    REDIS_NOTUSED(el);
+    REDIS_NOTUSED(mask);
+    REDIS_NOTUSED(privdata);
+
+    cfd = anetTcpAccept(server.neterr, fd, cip, &cport);
+    if (cfd == AE_ERR) {
+        redisLog(REDIS_VERBOSE,"Accepting client connection: %s", server.neterr);
+        return;
+    }
+    redisLog(REDIS_VERBOSE,"Accepted %s:%d", cip, cport);
+    acceptCommonHandler(cfd);
+}
+
+void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
+    int cfd;
+    char cpath[128];
+    REDIS_NOTUSED(el);
+    REDIS_NOTUSED(mask);
+    REDIS_NOTUSED(privdata);
+
+    cfd = anetUnixAccept(server.neterr, fd, cpath, sizeof(cpath));
+    if (cfd == AE_ERR) {
+        redisLog(REDIS_VERBOSE,"Accepting client connection: %s", server.neterr);
+        return;
+    }
+    redisLog(REDIS_VERBOSE,"Accepted connection to %s", server.unixsocket);
+    acceptCommonHandler(cfd);
+}
+
+
 static void freeClientArgv(redisClient *c) {
     int j;
 

src/redis.c

@@ -820,9 +820,9 @@ void initServer() {
     server.unixtime = time(NULL);
     aeCreateTimeEvent(server.el, 1, serverCron, NULL, NULL);
     if (server.ipfd > 0 && aeCreateFileEvent(server.el,server.ipfd,AE_READABLE,
-        acceptHandler,NULL) == AE_ERR) oom("creating file event");
+        acceptTcpHandler,NULL) == AE_ERR) oom("creating file event");
     if (server.sofd > 0 && aeCreateFileEvent(server.el,server.sofd,AE_READABLE,
-        acceptHandler,NULL) == AE_ERR) oom("creating file event");
+        acceptUnixHandler,NULL) == AE_ERR) oom("creating file event");
 
     if (server.appendonly) {
         server.appendfd = open(server.appendfilename,O_WRONLY|O_APPEND|O_CREAT,0644);

src/redis.h

@@ -579,7 +579,8 @@ void sendReplyToClientWritev(aeEventLoop *el, int fd, void *privdata, int mask);
 void addReply(redisClient *c, robj *obj);
 void addReplySds(redisClient *c, sds s);
 void processInputBuffer(redisClient *c);
-void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
+void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
+void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 void addReplyBulk(redisClient *c, robj *obj);
 void addReplyBulkCString(redisClient *c, char *s);