rename udev source files

1 files changed, 203 insertions, 0 deletions

diff --git a/udev/udev-util.c b/udev/udev-util.c
new file mode 100644
index 0000000000..4623c30caf
--- /dev/null
+++ b/udev/udev-util.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2004-2008 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <syslog.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+
+#include "udev.h"
+
+struct name_entry *name_list_add(struct udev *udev, struct list_head *name_list, const char *name, int sort)
+{
+	struct name_entry *name_loop;
+	struct name_entry *name_new;
+
+	/* avoid duplicate entries */
+	list_for_each_entry(name_loop, name_list, node) {
+		if (strcmp(name_loop->name, name) == 0) {
+			dbg(udev, "'%s' is already in the list\n", name);
+			return name_loop;
+		}
+	}
+
+	if (sort)
+		list_for_each_entry(name_loop, name_list, node) {
+			if (strcmp(name_loop->name, name) > 0)
+				break;
+		}
+
+	name_new = malloc(sizeof(struct name_entry));
+	if (name_new == NULL)
+		return NULL;
+	memset(name_new, 0x00, sizeof(struct name_entry));
+	util_strlcpy(name_new->name, name, sizeof(name_new->name));
+	dbg(udev, "adding '%s'\n", name_new->name);
+	list_add_tail(&name_new->node, &name_loop->node);
+
+	return name_new;
+}
+
+struct name_entry *name_list_key_add(struct udev *udev, struct list_head *name_list, const char *key, const char *value)
+{
+	struct name_entry *name_loop;
+	struct name_entry *name_new;
+	size_t keylen = strlen(key);
+
+	list_for_each_entry(name_loop, name_list, node) {
+		if (strncmp(name_loop->name, key, keylen) != 0)
+			continue;
+		if (name_loop->name[keylen] != '=')
+			continue;
+		dbg(udev, "key already present '%s', replace it\n", name_loop->name);
+		snprintf(name_loop->name, sizeof(name_loop->name), "%s=%s", key, value);
+		name_loop->name[sizeof(name_loop->name)-1] = '\0';
+		return name_loop;
+	}
+
+	name_new = malloc(sizeof(struct name_entry));
+	if (name_new == NULL)
+		return NULL;
+	memset(name_new, 0x00, sizeof(struct name_entry));
+	snprintf(name_new->name, sizeof(name_new->name), "%s=%s", key, value);
+	name_new->name[sizeof(name_new->name)-1] = '\0';
+	dbg(udev, "adding '%s'\n", name_new->name);
+	list_add_tail(&name_new->node, &name_loop->node);
+
+	return name_new;
+}
+
+int name_list_key_remove(struct udev *udev, struct list_head *name_list, const char *key)
+{
+	struct name_entry *name_loop;
+	struct name_entry *name_tmp;
+	size_t keylen = strlen(key);
+	int retval = 0;
+
+	list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
+		if (strncmp(name_loop->name, key, keylen) != 0)
+			continue;
+		if (name_loop->name[keylen] != '=')
+			continue;
+		list_del(&name_loop->node);
+		free(name_loop);
+		retval = 1;
+		break;
+	}
+	return retval;
+}
+
+void name_list_cleanup(struct udev *udev, struct list_head *name_list)
+{
+	struct name_entry *name_loop;
+	struct name_entry *name_tmp;
+
+	list_for_each_entry_safe(name_loop, name_tmp, name_list, node) {
+		list_del(&name_loop->node);
+		free(name_loop);
+	}
+}
+
+/* calls function for every file found in specified directory */
+int add_matching_files(struct udev *udev, struct list_head *name_list, const char *dirname, const char *suffix)
+{
+	struct dirent *ent;
+	DIR *dir;
+	char filename[UTIL_PATH_SIZE];
+
+	dbg(udev, "open directory '%s'\n", dirname);
+	dir = opendir(dirname);
+	if (dir == NULL) {
+		err(udev, "unable to open '%s': %m\n", dirname);
+		return -1;
+	}
+
+	while (1) {
+		ent = readdir(dir);
+		if (ent == NULL || ent->d_name[0] == '\0')
+			break;
+
+		if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
+			continue;
+
+		/* look for file matching with specified suffix */
+		if (suffix != NULL) {
+			const char *ext;
+
+			ext = strrchr(ent->d_name, '.');
+			if (ext == NULL)
+				continue;
+			if (strcmp(ext, suffix) != 0)
+				continue;
+		}
+		dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
+
+		snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
+		filename[sizeof(filename)-1] = '\0';
+		name_list_add(udev, name_list, filename, 1);
+	}
+
+	closedir(dir);
+	return 0;
+}
+
+uid_t lookup_user(struct udev *udev, const char *user)
+{
+	struct passwd *pw;
+	uid_t uid = 0;
+
+	errno = 0;
+	pw = getpwnam(user);
+	if (pw == NULL) {
+		if (errno == 0 || errno == ENOENT || errno == ESRCH)
+			err(udev, "specified user '%s' unknown\n", user);
+		else
+			err(udev, "error resolving user '%s': %m\n", user);
+	} else
+		uid = pw->pw_uid;
+
+	return uid;
+}
+
+extern gid_t lookup_group(struct udev *udev, const char *group)
+{
+	struct group *gr;
+	gid_t gid = 0;
+
+	errno = 0;
+	gr = getgrnam(group);
+	if (gr == NULL) {
+		if (errno == 0 || errno == ENOENT || errno == ESRCH)
+			err(udev, "specified group '%s' unknown\n", group);
+		else
+			err(udev, "error resolving group '%s': %m\n", group);
+	} else
+		gid = gr->gr_gid;
+
+	return gid;
+}
+