struct udev_device {
int refcount;
struct udev *udev;
- char *devpath;
char *syspath;
+ const char *devpath;
+ const char *sysname;
char *devname;
char *subsystem;
struct list_head link_list;
util_strlcpy(path, udev_get_sys_path(udev), sizeof(path));
util_strlcat(path, devpath, sizeof(path));
- if (stat(path, &statbuf) != 0)
- return NULL;
- if (!S_ISDIR(statbuf.st_mode))
+ util_strlcat(path, "/uevent", sizeof(path));
+ if (stat(path, &statbuf) != 0) {
+ info(udev, "not a device :%s\n", path);
return NULL;
+ }
udev_device = device_init(udev);
if (udev_device == NULL)
return udev_device;
}
+struct udev_device *udev_device_new_from_parent(struct udev_device *udev_device)
+{
+ struct udev_device *udev_device_parent = NULL;
+ char path[UTIL_PATH_SIZE];
+ char *pos;
+
+ if (udev_device == NULL)
+ return NULL;
+
+ util_strlcpy(path, udev_device_get_devpath(udev_device), sizeof(path));
+ while (1) {
+ pos = strrchr(path, '/');
+ if (pos == NULL)
+ break;
+ pos[0] = '\0';
+ udev_device_parent = udev_device_new_from_devpath(udev_device->udev, path);
+ if (udev_device_parent != NULL)
+ break;
+ }
+ return udev_device_parent;
+}
+
/**
* udev_device_get_udev:
* @udev_device: udev device
return udev_device->syspath;
}
+const char *udev_device_get_sysname(struct udev_device *udev_device)
+{
+ if (udev_device == NULL)
+ return NULL;
+ return udev_device->sysname;
+}
+
/**
* udev_device_get_devname:
* @udev_device: udev device
if (asprintf(&udev_device->syspath, "%s%s", udev_get_sys_path(udev_device->udev), devpath) < 0)
return -ENOMEM;
udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))];
+ udev_device->sysname = strrchr(udev_device->syspath, '/');
+ if (udev_device->sysname != NULL)
+ udev_device->sysname = &udev_device->sysname[1];
return 0;
}
/*
- * Based on list.h in the Linux kernel source tree.
+ * Simple doubly linked list implementation.
+ *
+ * Based on list.h in the Linux kernel source tree, licensed under
+ * the GNU GPL version 2.
*/
#ifndef _LIST_H
#define _LIST_H
/**
- * container_of - cast a member of a structure out to the containing structure
- *
+ * container_of:
* @ptr: the pointer to the member.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*
+ * cast a member of a structure out to the containing structure
*/
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
#define LIST_POISON1 ((void *) 0x00100100)
#define LIST_POISON2 ((void *) 0x00200200)
-/*
- * Simple doubly linked list implementation.
- *
- * Some of the internal functions ("__xxx") are useful when
- * manipulating whole lists rather than single entries, as
- * sometimes we already know the next/prev entries and we can
- * generate better code by using them directly rather than
- * using the generic single-entry routines.
- */
-
struct list_head {
struct list_head *next, *prev;
};
(ptr)->next = (ptr); (ptr)->prev = (ptr); \
} while (0)
-/*
- * Insert a new entry between two known consecutive entries.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
+/* Insert a new entry between two known consecutive entries. */
static inline void __list_add(struct list_head *new,
struct list_head *prev,
struct list_head *next)
}
/**
- * list_add - add a new entry
+ * list_add:
* @new: new entry to be added
* @head: list head to add it after
*
}
/**
- * list_add_tail - add a new entry
+ * list_add_tail:
* @new: new entry to be added
* @head: list head to add it before
*
/*
* Delete a list entry by making the prev/next entries
* point to each other.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
*/
static inline void __list_del(struct list_head * prev, struct list_head * next)
{
}
/**
- * list_del - deletes entry from list.
+ * list_del:
* @entry: the element to delete from the list.
+ *
+ * deletes entry from list.
+ *
* Note: list_empty on entry does not return true after this, the entry is
* in an undefined state.
*/
}
/**
- * list_del_init - deletes entry from list and reinitialize it.
- * @entry: the element to delete from the list.
- */
-static inline void list_del_init(struct list_head *entry)
-{
- __list_del(entry->prev, entry->next);
- INIT_LIST_HEAD(entry);
-}
-
-/**
- * list_move - delete from one list and add as another's head
+ * list_move
* @list: the entry to move
* @head: the head that will precede our entry
+ * delete from one list and add as another's head
*/
static inline void list_move(struct list_head *list, struct list_head *head)
{
}
/**
- * list_move_tail - delete from one list and add as another's tail
+ * list_move_tail
* @list: the entry to move
* @head: the head that will follow our entry
+ *
+ * delete from one list and add as another's tail
*/
static inline void list_move_tail(struct list_head *list,
struct list_head *head)
}
/**
- * list_empty - tests whether a list is empty
+ * list_empty:
* @head: the list to test.
+ *
+ * tests whether a list is empty
*/
static inline int list_empty(struct list_head *head)
{
return head->next == head;
}
-static inline void __list_splice(struct list_head *list,
- struct list_head *head)
-{
- struct list_head *first = list->next;
- struct list_head *last = list->prev;
- struct list_head *at = head->next;
-
- first->prev = head;
- head->next = first;
-
- last->next = at;
- at->prev = last;
-}
-
-/**
- * list_splice - join two lists
- * @list: the new list to add.
- * @head: the place to add it in the first list.
- */
-static inline void list_splice(struct list_head *list, struct list_head *head)
-{
- if (!list_empty(list))
- __list_splice(list, head);
-}
-
/**
- * list_splice_init - join two lists and reinitialise the emptied list.
- * @list: the new list to add.
- * @head: the place to add it in the first list.
- *
- * The list at @list is reinitialised
- */
-static inline void list_splice_init(struct list_head *list,
- struct list_head *head)
-{
- if (!list_empty(list)) {
- __list_splice(list, head);
- INIT_LIST_HEAD(list);
- }
-}
-
-/**
- * list_entry - get the struct for this entry
+ * list_entry:
* @ptr: the &struct list_head pointer.
* @type: the type of the struct this is embedded in.
* @member: the name of the list_struct within the struct.
+ *
+ * get the struct for this entry
*/
#define list_entry(ptr, type, member) \
container_of(ptr, type, member)
/**
- * list_for_each - iterate over a list
- * @pos: the &struct list_head to use as a loop counter.
- * @head: the head for your list.
- */
-#define list_for_each(pos, head) \
- for (pos = (head)->next; pos != (head); \
- pos = pos->next)
-
-/**
- * __list_for_each - iterate over a list
- * @pos: the &struct list_head to use as a loop counter.
- * @head: the head for your list.
- *
- * This variant differs from list_for_each() in that it's the
- * simplest possible list iteration code.
- * Use this for code that knows the list to be very short (empty
- * or 1 entry) most of the time.
- */
-#define __list_for_each(pos, head) \
- for (pos = (head)->next; pos != (head); pos = pos->next)
-
-/**
- * list_for_each_prev - iterate over a list backwards
- * @pos: the &struct list_head to use as a loop counter.
- * @head: the head for your list.
- */
-#define list_for_each_prev(pos, head) \
- for (pos = (head)->prev; pos != (head); pos = pos->prev)
-
-/**
- * list_for_each_safe - iterate over a list safe against removal of list entry
- * @pos: the &struct list_head to use as a loop counter.
- * @n: another &struct list_head to use as temporary storage
- * @head: the head for your list.
- */
-#define list_for_each_safe(pos, n, head) \
- for (pos = (head)->next, n = pos->next; pos != (head); \
- pos = n, n = pos->next)
-
-/**
- * list_for_each_entry - iterate over list of given type
+ * list_for_each_entry:
* @pos: the type * to use as a loop counter.
* @head: the head for your list.
* @member: the name of the list_struct within the struct.
+ *
+ * iterate over list of given type
*/
#define list_for_each_entry(pos, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member); \
pos = list_entry(pos->member.next, typeof(*pos), member))
/**
- * list_for_each_entry_reverse - iterate backwards over list of given type.
- * @pos: the type * to use as a loop counter.
- * @head: the head for your list.
- * @member: the name of the list_struct within the struct.
- */
-#define list_for_each_entry_reverse(pos, head, member) \
- for (pos = list_entry((head)->prev, typeof(*pos), member); \
- &pos->member != (head); \
- pos = list_entry(pos->member.prev, typeof(*pos), member))
-
-/**
- * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * list_for_each_entry_safe:
* @pos: the type * to use as a loop counter.
* @n: another type * to use as temporary storage
* @head: the head for your list.
* @member: the name of the list_struct within the struct.
+ *
+ * iterate over list of given type safe against removal of list entry
*/
#define list_for_each_entry_safe(pos, n, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member), \
printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value);
}
+ closedir(dir);
}
printf("\n");
}
static int print_device_chain(struct udev *udev, const char *devpath)
{
- struct sysfs_device *dev;
+ struct udev_device *device;
+ const char *str;
- dev = sysfs_device_get(udev, devpath);
- if (dev == NULL)
+ device = udev_device_new_from_devpath(udev, devpath);
+ if (device == NULL)
return -1;
printf("\n"
"and the attributes from one single parent device.\n"
"\n");
- printf(" looking at device '%s':\n", dev->devpath);
- printf(" KERNEL==\"%s\"\n", dev->kernel);
- printf(" SUBSYSTEM==\"%s\"\n", dev->subsystem);
- printf(" DRIVER==\"%s\"\n", dev->driver);
- print_all_attributes(udev, dev->devpath, "ATTR");
-
- /* walk up the chain of devices */
- while (1) {
- dev = sysfs_device_get_parent(udev, dev);
- if (dev == NULL)
+ printf(" looking at device '%s':\n", udev_device_get_devpath(device));
+ printf(" KERNEL==\"%s\"\n", udev_device_get_sysname(device));
+ str = udev_device_get_subsystem(device);
+ if (str == NULL)
+ str = "";
+ printf(" SUBSYSTEM==\"%s\"\n", str);
+ str = udev_device_get_driver(device);
+ if (str == NULL)
+ str = "";
+ printf(" DRIVER==\"%s\"\n", str);
+ print_all_attributes(udev, udev_device_get_devpath(device), "ATTR");
+
+ while (device != NULL) {
+ struct udev_device *device_parent;
+
+ device_parent = udev_device_new_from_parent(device);
+ udev_device_unref(device);
+ if (device_parent == NULL)
break;
- printf(" looking at parent device '%s':\n", dev->devpath);
- printf(" KERNELS==\"%s\"\n", dev->kernel);
- printf(" SUBSYSTEMS==\"%s\"\n", dev->subsystem);
- printf(" DRIVERS==\"%s\"\n", dev->driver);
-
- print_all_attributes(udev, dev->devpath, "ATTRS");
+ device = device_parent;
+ printf(" looking at parent device '%s':\n", udev_device_get_devpath(device));
+ printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device));
+ str = udev_device_get_subsystem(device);
+ if (str == NULL)
+ str = "";
+ printf(" SUBSYSTEMS==\"%s\"\n", str);
+ str = udev_device_get_driver(device);
+ if (str == NULL)
+ str = "";
+ printf(" DRIVERS==\"%s\"\n", str);
+ print_all_attributes(udev, udev_device_get_devpath(device), "ATTRS");
}
return 0;
projects / systemd / commitdiff