merge udev/, libudev/, systemd/ files in src/; move extras/ to src/

1 files changed, 185 insertions, 0 deletions

diff --git a/src/libudev-device-private.c b/src/libudev-device-private.c
new file mode 100644
index 0000000000..487d39bb5b
--- /dev/null
+++ b/src/libudev-device-private.c
@@ -0,0 +1,185 @@
+/*
+ * libudev - interface to udev device information
+ *
+ * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "libudev.h"
+#include "libudev-private.h"
+
+static void udev_device_tag(struct udev_device *dev, const char *tag, bool add)
+{
+	const char *id;
+	struct udev *udev = udev_device_get_udev(dev);
+	char filename[UTIL_PATH_SIZE];
+
+	id = udev_device_get_id_filename(dev);
+	if (id == NULL)
+		return;
+	util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/tags/", tag, "/", id, NULL);
+
+	if (add) {
+		int fd;
+
+		util_create_path(udev, filename);
+		fd = open(filename, O_WRONLY|O_CREAT|O_CLOEXEC|O_TRUNC|O_NOFOLLOW, 0444);
+		if (fd >= 0)
+			close(fd);
+	} else {
+		unlink(filename);
+	}
+}
+
+int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add)
+{
+	struct udev_list_entry *list_entry;
+	bool found;
+
+	if (add && dev_old != NULL) {
+		/* delete possible left-over tags */
+		udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev_old)) {
+			const char *tag_old = udev_list_entry_get_name(list_entry);
+			struct udev_list_entry *list_entry_current;
+
+			found = false;
+			udev_list_entry_foreach(list_entry_current, udev_device_get_tags_list_entry(dev)) {
+				const char *tag = udev_list_entry_get_name(list_entry_current);
+
+				if (strcmp(tag, tag_old) == 0) {
+					found = true;
+					break;
+				}
+			}
+			if (!found)
+				udev_device_tag(dev_old, tag_old, false);
+		}
+	}
+
+	udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev))
+		udev_device_tag(dev, udev_list_entry_get_name(list_entry), add);
+
+	return 0;
+}
+
+static bool device_has_info(struct udev_device *udev_device)
+{
+	struct udev_list_entry *list_entry;
+
+	if (udev_device_get_devlinks_list_entry(udev_device) != NULL)
+		return true;
+	if (udev_device_get_devlink_priority(udev_device) != 0)
+		return true;
+	udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device))
+		if (udev_list_entry_get_num(list_entry))
+			return true;
+	if (udev_device_get_tags_list_entry(udev_device) != NULL)
+		return true;
+	if (udev_device_get_watch_handle(udev_device) >= 0)
+		return true;
+	return false;
+}
+
+int udev_device_update_db(struct udev_device *udev_device)
+{
+	bool has_info;
+	const char *id;
+	struct udev *udev = udev_device_get_udev(udev_device);
+	char filename[UTIL_PATH_SIZE];
+	char filename_tmp[UTIL_PATH_SIZE];
+	FILE *f;
+
+	id = udev_device_get_id_filename(udev_device);
+	if (id == NULL)
+		return -1;
+
+	has_info = device_has_info(udev_device);
+	util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL);
+
+	/* do not store anything for otherwise empty devices */
+	if (!has_info &&
+	    major(udev_device_get_devnum(udev_device)) == 0 &&
+	    udev_device_get_ifindex(udev_device) == 0) {
+		unlink(filename);
+		return 0;
+	}
+
+	/* write a database file */
+	util_strscpyl(filename_tmp, sizeof(filename_tmp), filename, ".tmp", NULL);
+	util_create_path(udev, filename_tmp);
+	f = fopen(filename_tmp, "we");
+	if (f == NULL) {
+		err(udev, "unable to create temporary db file '%s': %m\n", filename_tmp);
+		return -1;
+	}
+
+	/*
+	 * set 'sticky' bit to indicate that we should not clean the
+	 * database when we transition from initramfs to the real root
+	 */
+	if (udev_device_get_db_persist(udev_device))
+		fchmod(fileno(f), 01644);
+
+	if (has_info) {
+		struct udev_list_entry *list_entry;
+
+		if (major(udev_device_get_devnum(udev_device)) > 0) {
+			size_t devlen = strlen(udev_get_dev_path(udev))+1;
+
+			udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(udev_device))
+				fprintf(f, "S:%s\n", &udev_list_entry_get_name(list_entry)[devlen]);
+			if (udev_device_get_devlink_priority(udev_device) != 0)
+				fprintf(f, "L:%i\n", udev_device_get_devlink_priority(udev_device));
+			if (udev_device_get_watch_handle(udev_device) >= 0)
+				fprintf(f, "W:%i\n", udev_device_get_watch_handle(udev_device));
+		}
+
+		if (udev_device_get_usec_initialized(udev_device) > 0)
+			fprintf(f, "I:%llu\n", udev_device_get_usec_initialized(udev_device));
+
+		udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
+			if (!udev_list_entry_get_num(list_entry))
+				continue;
+			fprintf(f, "E:%s=%s\n",
+				udev_list_entry_get_name(list_entry),
+				udev_list_entry_get_value(list_entry));
+		}
+
+		udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device))
+			fprintf(f, "G:%s\n", udev_list_entry_get_name(list_entry));
+	}
+
+	fclose(f);
+	rename(filename_tmp, filename);
+	info(udev, "created %s file '%s' for '%s'\n", has_info ? "db" : "empty",
+	     filename, udev_device_get_devpath(udev_device));
+	return 0;
+}
+
+int udev_device_delete_db(struct udev_device *udev_device)
+{
+	const char *id;
+	struct udev *udev = udev_device_get_udev(udev_device);
+	char filename[UTIL_PATH_SIZE];
+
+	id = udev_device_get_id_filename(udev_device);
+	if (id == NULL)
+		return -1;
+	util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL);
+	unlink(filename);
+	return 0;
+}