notify: cleanups

* move set_nonblock{,ing}() into utils.c since we use it
elsewhere, too
* add proper error checking to set_nonblocking()
* use os_compat.h instead of individually #includ-ing system headers

git-svn-id: https://svn.musicpd.org/mpd/trunk@7217 09075e82-0dd4-0310-85a5-a0d7c8717e4f

src/inputStream_http.c

@@ -357,7 +357,7 @@ static int initHTTPConnection(InputStream * inStream)
 	struct addrinfo *ans = NULL;
 	struct addrinfo *ap = NULL;
 	struct addrinfo hints;
-	int error, flags;
+	int error;
 	InputStreamHTTPData *data = (InputStreamHTTPData *) inStream->data;
 	/**
 	 * Setup hints
@@ -397,8 +397,7 @@ static int initHTTPConnection(InputStream * inStream)
 			return -1;
 		}
 
-		flags = fcntl(data->sock, F_GETFL, 0);
-		fcntl(data->sock, F_SETFL, flags | O_NONBLOCK);
+		set_nonblocking(data->sock);
 
 		if (connect(data->sock, ap->ai_addr, ap->ai_addrlen) >= 0
 		    || errno == EINPROGRESS) {

src/interface.c

@@ -127,8 +127,6 @@ static void set_send_buf_size(Interface * interface)
 
 static void openInterface(Interface * interface, int fd)
 {
-	int flags;
-
 	assert(interface->fd < 0);
 
 	interface->cmd_list_size = 0;
@@ -137,8 +135,7 @@ static void openInterface(Interface * interface, int fd)
 	interface->bufferLength = 0;
 	interface->bufferPos = 0;
 	interface->fd = fd;
-	while ((flags = fcntl(fd, F_GETFL)) < 0 && errno == EINTR) ;
-	while (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0 && errno == EINTR) ;
+	set_nonblocking(fd);
 	interface->lastTime = time(NULL);
 	interface->cmd_list = NULL;
 	interface->cmd_list_tail = NULL;

src/listen.c

@@ -93,7 +93,7 @@ static int establishListen(unsigned int port,
 	if ((sock = socket(pf, SOCK_STREAM, 0)) < 0)
 		FATAL("socket < 0\n");
 
-	if (fcntl(sock, F_SETFL, fcntl(sock, F_GETFL) | O_NONBLOCK) < 0) {
+	if (set_nonblocking(sock) < 0) {
 		FATAL("problems setting nonblocking on listen socket: %s\n",
 		      strerror(errno));
 	}

src/notify.c

@@ -17,40 +17,17 @@
  */
 
 #include "notify.h"
+#include "os_compat.h"
+#include "log.h"
+#include "utils.h"
 
-#include <assert.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-int set_nonblock(int fd)
+void initNotify(Notify *notify)
 {
-	int ret;
-
-	assert(fd >= 0);
-
-	ret = fcntl(fd, F_GETFL, 0);
-	if (ret < 0)
-		return ret;
-
-	return fcntl(fd, F_SETFL, ret|O_NONBLOCK);
-}
-
-int initNotify(Notify *notify)
-{
-	int ret;
-
-	ret = pipe(notify->fds);
-	if (ret < 0)
-		return -1;
-
-	ret = set_nonblock(notify->fds[1]);
-	if (ret < 0) {
-		close(notify->fds[0]);
-		close(notify->fds[1]);
-		return -1;
-	}
-
-	return 0;
+	if (pipe(notify->fds) < 0)
+		FATAL("Couldn't open pipe: %s", strerror(errno));
+	if (set_nonblocking(notify->fds[1]) < 0)
+		FATAL("Couldn't set non-blocking on notify fd: %s",
+		      strerror(errno));
 }
 
 int waitNotify(Notify *notify)

src/notify.h

@@ -38,7 +38,7 @@ typedef struct _Notify {
 	int fds[2];
 } Notify;
 
-int initNotify(Notify *notify);
+void initNotify(Notify *notify);
 
 int waitNotify(Notify *notify);
 

src/utils.c

@@ -214,3 +214,18 @@ char *parsePath(char *path)
 
 	return newPath;
 }
+
+int set_nonblocking(int fd)
+{
+	int ret, flags;
+
+	assert(fd >= 0);
+
+	while ((flags = fcntl(fd, F_GETFL)) < 0 && errno == EINTR) ;
+	if (flags < 0)
+		return flags;
+
+	flags |= O_NONBLOCK;
+	while ((ret = fcntl(fd, F_SETFL, flags)) < 0 && errno == EINTR) ;
+	return ret;
+}

src/utils.h

@@ -79,4 +79,6 @@ mpd_malloc void *xcalloc(size_t nmemb, size_t size);
 
 char *parsePath(char *path);
 
+int set_nonblocking(int fd);
+
 #endif