udevadm: split out control functions

1 files changed, 133 insertions, 0 deletions

diff --git a/udev/udev-control.c b/udev/udev-control.c
new file mode 100644
index 0000000000..4e339ff483
--- /dev/null
+++ b/udev/udev-control.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2005-2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation version 2 of the License.
+ * 
+ *	This program is distributed in the hope that it will be useful, but
+ *	WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *	General Public License for more details.
+ * 
+ *	You should have received a copy of the GNU General Public License along
+ *	with this program; if not, write to the Free Software Foundation, Inc.,
+ *	51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include "udev.h"
+#include "udevd.h"
+
+struct udev_ctrl {
+	int sock;
+	struct sockaddr_un saddr;
+	socklen_t addrlen;
+};
+
+struct udev_ctrl *udev_ctrl_new_from_socket(const char *socket_path)
+{
+	struct udev_ctrl *uctrl;
+
+	uctrl = malloc(sizeof(struct udev_ctrl));
+	if (uctrl == NULL)
+		return NULL;
+	memset(uctrl, 0x00, sizeof(struct udev_ctrl));
+
+	uctrl->sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
+	if (uctrl->sock < 0) {
+		err("error getting socket: %s\n", strerror(errno));
+		free(uctrl);
+		return NULL;
+	}
+
+	uctrl->saddr.sun_family = AF_LOCAL;
+	strcpy(uctrl->saddr.sun_path, socket_path);
+	uctrl->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(uctrl->saddr.sun_path);
+	/* translate leading '@' to abstract namespace */
+	if (uctrl->saddr.sun_path[0] == '@')
+		uctrl->saddr.sun_path[0] = '\0';
+	return uctrl;
+}
+
+void udev_ctrl_unref(struct udev_ctrl *uctrl)
+{
+	if (uctrl == NULL)
+		return;
+	close(uctrl->sock);
+}
+
+static int ctrl_send(struct udev_ctrl *uctrl, enum udevd_ctrl_msg_type type, int intval, const char *buf)
+{
+	struct udevd_ctrl_msg ctrl_msg;
+	int err;
+
+	memset(&ctrl_msg, 0x00, sizeof(struct udevd_ctrl_msg));
+	strcpy(ctrl_msg.magic, UDEVD_CTRL_MAGIC);
+	ctrl_msg.type = type;
+
+	if (buf != NULL)
+		strlcpy(ctrl_msg.buf, buf, sizeof(ctrl_msg.buf));
+	else
+		ctrl_msg.intval = intval;
+
+	err = sendto(uctrl->sock, &ctrl_msg, sizeof(ctrl_msg), 0, (struct sockaddr *)&uctrl->saddr, uctrl->addrlen);
+	if (err == -1) {
+		err("error sending message: %s\n", strerror(errno));
+	}
+	return err;
+}
+
+int udev_ctrl_set_log_level(struct udev_ctrl *uctrl, int priority)
+{
+	ctrl_send(uctrl, UDEVD_CTRL_SET_LOG_LEVEL, priority, NULL);
+	return 0;
+}
+
+int udev_ctrl_stop_exec_queue(struct udev_ctrl *uctrl)
+{
+	ctrl_send(uctrl, UDEVD_CTRL_STOP_EXEC_QUEUE, 0, NULL);
+	return 0;
+}
+
+int udev_ctrl_start_exec_queue(struct udev_ctrl *uctrl)
+{
+	ctrl_send(uctrl, UDEVD_CTRL_START_EXEC_QUEUE, 0, NULL);
+	return 0;
+}
+
+int udev_ctrl_reload_rules(struct udev_ctrl *uctrl)
+{
+	ctrl_send(uctrl, UDEVD_CTRL_RELOAD_RULES, 0, NULL);
+	return 0;
+}
+
+int udev_ctrl_set_env(struct udev_ctrl *uctrl, const char *key)
+{
+	ctrl_send(uctrl, UDEVD_CTRL_ENV, 0, optarg);
+	return 0;
+}
+
+int udev_ctrl_set_max_childs(struct udev_ctrl *uctrl, int count)
+{
+	ctrl_send(uctrl, UDEVD_CTRL_SET_MAX_CHILDS, count, NULL);
+	return 0;
+}
+
+int udev_ctrl_set_max_childs_running(struct udev_ctrl *uctrl, int count)
+{
+	ctrl_send(uctrl, UDEVD_CTRL_SET_MAX_CHILDS_RUNNING, count, NULL);
+	return 0;
+}