Introduce g_io_channel_set_flags to eglib.

2 files changed, 74 insertions, 15 deletions

diff --git a/eglib/gmain.c b/eglib/gmain.c
index b51da600..8071c62b 100644
--- a/eglib/gmain.c
+++ b/eglib/gmain.c
@@ -201,6 +201,52 @@ gint g_io_channel_unix_get_fd(GIOChannel *channel)
 	return channel->fd;
 }
 
+static int set_flags(int fd, long flags)
+{
+	long arg;
+
+	arg = fcntl(fd, F_GETFL);
+	if (arg < 0)
+		return -errno;
+
+	/* Return if already set */
+	if ((arg & flags) == flags)
+		return 0;
+
+	arg |= flags;
+	if (fcntl(fd, F_SETFL, arg) < 0)
+		return -errno;
+
+	return 0;
+}
+
+GIOStatus g_io_channel_set_flags(GIOChannel *channel, GIOFlags flags,
+				GError **error)
+{
+	int err, fd;
+	long fd_flags = 0;
+
+	if (!channel || channel->closed)
+		return G_IO_STATUS_ERROR;
+
+	fd = g_io_channel_unix_get_fd(channel);
+
+	if (flags & G_IO_FLAG_APPEND)
+		fd_flags |= O_APPEND;
+	if (flags & G_IO_FLAG_NONBLOCK)
+		fd_flags |= O_NONBLOCK;
+
+	err = set_flags(fd, fd_flags);
+	if (err < 0) {
+		if (error)
+			g_set_error(error, 0, 0, "Unable to set flags: %s",
+					strerror(-err));
+		return G_IO_STATUS_ERROR;
+	}
+
+	return G_IO_STATUS_NORMAL;
+}
+
 struct io_watch {
 	guint id;
 	GIOChannel *channel;
diff --git a/eglib/gmain.h b/eglib/gmain.h
index 15b6c072..b7b93072 100644
--- a/eglib/gmain.h
+++ b/eglib/gmain.h
@@ -58,6 +58,17 @@ typedef enum {
 	G_IO_STATUS_AGAIN	= 2
 } GIOStatus;
 
+typedef enum {
+	G_IO_FLAG_APPEND	= 1 << 0,
+	G_IO_FLAG_NONBLOCK	= 1 << 1,
+	G_IO_FLAG_IS_READABLE	= 1 << 2,
+	G_IO_FLAG_IS_WRITEABLE	= 1 << 3,
+	G_IO_FLAG_IS_SEEKABLE	= 1 << 4,
+	G_IO_FLAG_MASK		= (1 << 5) - 1,
+	G_IO_FLAG_GET_MASK	= G_IO_FLAG_MASK,
+	G_IO_FLAG_SET_MASK	= G_IO_FLAG_APPEND | G_IO_FLAG_NONBLOCK
+} GIOFlags;
+
 #ifndef FALSE
 #define FALSE (0)
 #endif
@@ -78,6 +89,21 @@ typedef enum {
 #undef CLAMP
 #define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
 
+/* GError */
+
+typedef guint32 GQuark;
+
+typedef struct {
+	GQuark       domain;
+	gint         code;
+	gchar       *message;
+} GError;
+
+void g_set_error(GError **err, GQuark domain, gint code,
+			const gchar *format, ...);
+GError* g_error_new_literal(GQuark domain, gint code, const gchar *message);
+void g_error_free(GError *err);
+
 typedef enum {
 	G_IO_IN		= POLLIN,
 	G_IO_OUT	= POLLOUT,
@@ -109,6 +135,8 @@ GIOChannel *g_io_channel_ref(GIOChannel *channel);
 void g_io_channel_unref(GIOChannel *channel);
 void g_io_channel_set_close_on_unref(GIOChannel *channel, gboolean do_close);
 gint g_io_channel_unix_get_fd(GIOChannel *channel);
+GIOStatus g_io_channel_set_flags(GIOChannel *channel, GIOFlags flags,
+				GError **error);
 guint g_io_add_watch(GIOChannel *channel, GIOCondition condition,
 					GIOFunc func, gpointer user_data);
 guint g_io_add_watch_full(GIOChannel *channel, gint priority,
@@ -123,21 +151,6 @@ guint g_timeout_add(guint interval, GSourceFunc function, gpointer data);
 guint g_idle_add(GSourceFunc function, gpointer data);
 gboolean g_source_remove(guint tag);
 
-/* GError */
-
-typedef guint32 GQuark;
-
-typedef struct {
-	GQuark       domain;
-	gint         code;
-	gchar       *message;
-} GError;
-
-void g_set_error(GError **err, GQuark domain, gint code,
-			const gchar *format, ...);
-GError* g_error_new_literal(GQuark domain, gint code, const gchar *message);
-void g_error_free(GError *err);
-
 /* Spawning related functions */
 
 typedef enum {