diff options
Diffstat (limited to 'src/libudev-legacy/libudev-list.c')
-rw-r--r-- | src/libudev-legacy/libudev-list.c | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/src/libudev-legacy/libudev-list.c b/src/libudev-legacy/libudev-list.c deleted file mode 100644 index e828a4e4c6..0000000000 --- a/src/libudev-legacy/libudev-list.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008 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 <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <unistd.h> -#include <errno.h> -#include <string.h> - -#include "libudev.h" -#include "libudev-private.h" - -/** - * SECTION:libudev-list - * @short_description: list operation - * - * Libudev list operations. - */ - -/** - * udev_list_entry: - * - * Opaque object representing one entry in a list. An entry contains - * contains a name, and optionally a value. - */ -struct udev_list_entry { - struct udev_list_node node; - struct udev *udev; - struct udev_list_node *list; - char *name; - char *value; - int num; -}; - -/* the list's head points to itself if empty */ -void udev_list_init(struct udev_list_node *list) -{ - list->next = list; - list->prev = list; -} - -int udev_list_is_empty(struct udev_list_node *list) -{ - return list->next == list; -} - -static void udev_list_node_insert_between(struct udev_list_node *new, - struct udev_list_node *prev, - struct udev_list_node *next) -{ - next->prev = new; - new->next = next; - new->prev = prev; - prev->next = new; -} - -void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list) -{ - udev_list_node_insert_between(new, list->prev, list); -} - -void udev_list_node_remove(struct udev_list_node *entry) -{ - struct udev_list_node *prev = entry->prev; - struct udev_list_node *next = entry->next; - - next->prev = prev; - prev->next = next; - - entry->prev = NULL; - entry->next = NULL; -} - -/* return list entry which embeds this node */ -static struct udev_list_entry *list_node_to_entry(struct udev_list_node *node) -{ - char *list; - - list = (char *)node; - list -= offsetof(struct udev_list_entry, node); - return (struct udev_list_entry *)list; -} - -/* insert entry into a list as the last element */ -void udev_list_entry_append(struct udev_list_entry *new, struct udev_list_node *list) -{ - /* inserting before the list head make the node the last node in the list */ - udev_list_node_insert_between(&new->node, list->prev, list); - new->list = list; -} - -/* remove entry from a list */ -void udev_list_entry_remove(struct udev_list_entry *entry) -{ - udev_list_node_remove(&entry->node); - entry->list = NULL; -} - -/* insert entry into a list, before a given existing entry */ -void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry) -{ - udev_list_node_insert_between(&new->node, entry->node.prev, &entry->node); - new->list = entry->list; -} - -struct udev_list_entry *udev_list_entry_add(struct udev *udev, struct udev_list_node *list, - const char *name, const char *value, - unsigned int flags) -{ - struct udev_list_entry *entry_loop = NULL; - struct udev_list_entry *entry_new; - - if (flags & UDEV_LIST_UNIQUE) { - udev_list_entry_foreach(entry_loop, udev_list_get_entry(list)) { - if (strcmp(entry_loop->name, name) == 0) { - dbg(udev, "'%s' is already in the list\n", name); - free(entry_loop->value); - if (value == NULL) { - entry_loop->value = NULL; - dbg(udev, "'%s' value unset\n", name); - return entry_loop; - } - entry_loop->value = strdup(value); - if (entry_loop->value == NULL) - return NULL; - dbg(udev, "'%s' value replaced with '%s'\n", name, value); - return entry_loop; - } - } - } - - if (flags & UDEV_LIST_SORT) { - udev_list_entry_foreach(entry_loop, udev_list_get_entry(list)) { - if (strcmp(entry_loop->name, name) > 0) - break; - } - } - - entry_new = malloc(sizeof(struct udev_list_entry)); - if (entry_new == NULL) - return NULL; - memset(entry_new, 0x00, sizeof(struct udev_list_entry)); - entry_new->udev = udev; - entry_new->name = strdup(name); - if (entry_new->name == NULL) { - free(entry_new); - return NULL; - } - - if (value != NULL) { - entry_new->value = strdup(value); - if (entry_new->value == NULL) { - free(entry_new->name); - free(entry_new); - return NULL; - } - } - - if (entry_loop != NULL) - udev_list_entry_insert_before(entry_new, entry_loop); - else - udev_list_entry_append(entry_new, list); - - dbg(udev, "'%s=%s' added\n", entry_new->name, entry_new->value); - return entry_new; -} - -void udev_list_entry_delete(struct udev_list_entry *entry) -{ - udev_list_node_remove(&entry->node); - free(entry->name); - free(entry->value); - free(entry); -} - -void udev_list_cleanup_entries(struct udev *udev, struct udev_list_node *list) -{ - struct udev_list_entry *entry_loop; - struct udev_list_entry *entry_tmp; - - udev_list_entry_foreach_safe(entry_loop, entry_tmp, udev_list_get_entry(list)) - udev_list_entry_delete(entry_loop); -} - -struct udev_list_entry *udev_list_get_entry(struct udev_list_node *list) -{ - if (udev_list_is_empty(list)) - return NULL; - return list_node_to_entry(list->next); -} - -/** - * udev_list_entry_get_next: - * @list_entry: current entry - * - * Returns: the next entry from the list, #NULL is no more entries are found. - */ -UDEV_EXPORT struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry) -{ - struct udev_list_node *next; - - if (list_entry == NULL) - return NULL; - next = list_entry->node.next; - /* empty list or no more entries */ - if (next == list_entry->list) - return NULL; - return list_node_to_entry(next); -} - -/** - * udev_list_entry_get_by_name: - * @list_entry: current entry - * @name: name string to match - * - * Returns: the entry where @name matched, #NULL if no matching entry is found. - */ -UDEV_EXPORT struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name) -{ - struct udev_list_entry *entry; - - udev_list_entry_foreach(entry, list_entry) { - if (strcmp(udev_list_entry_get_name(entry), name) == 0) { - dbg(entry->udev, "found '%s=%s'\n", entry->name, entry->value); - return entry; - } - } - return NULL; -} - -/** - * udev_list_entry_get_name: - * @list_entry: current entry - * - * Returns: the name string of this entry. - */ -UDEV_EXPORT const char *udev_list_entry_get_name(struct udev_list_entry *list_entry) -{ - if (list_entry == NULL) - return NULL; - return list_entry->name; -} - -/** - * udev_list_entry_get_value: - * @list_entry: current entry - * - * Returns: the value string of this entry. - */ -UDEV_EXPORT const char *udev_list_entry_get_value(struct udev_list_entry *list_entry) -{ - if (list_entry == NULL) - return NULL; - return list_entry->value; -} - -int udev_list_entry_get_num(struct udev_list_entry *list_entry) -{ - if (list_entry == NULL) - return -EINVAL; - return list_entry->num; -} - -void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num) -{ - if (list_entry == NULL) - return; - list_entry->num = num; -} |