forked from Minki/linux
2425c08b37
The problem with remembering a user space process by its pid is that it is possible that the process will exit, pid wrap around will occur. Converting to a struct pid avoid that problem, and paves the way for implementing a pid namespace. Also since usb is the only user of kill_proc_info_as_uid rename kill_proc_info_as_uid to kill_pid_info_as_uid and have the new version take a struct pid. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/* Functions local to drivers/usb/core/ */
|
|
|
|
extern int usb_create_sysfs_dev_files (struct usb_device *dev);
|
|
extern void usb_remove_sysfs_dev_files (struct usb_device *dev);
|
|
extern int usb_create_sysfs_intf_files (struct usb_interface *intf);
|
|
extern void usb_remove_sysfs_intf_files (struct usb_interface *intf);
|
|
extern int usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint,
|
|
struct usb_device *udev);
|
|
extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint);
|
|
|
|
extern void usb_disable_endpoint (struct usb_device *dev, unsigned int epaddr);
|
|
extern void usb_disable_interface (struct usb_device *dev,
|
|
struct usb_interface *intf);
|
|
extern void usb_release_interface_cache(struct kref *ref);
|
|
extern void usb_disable_device (struct usb_device *dev, int skip_ep0);
|
|
|
|
extern int usb_get_device_descriptor(struct usb_device *dev,
|
|
unsigned int size);
|
|
extern char *usb_cache_string(struct usb_device *udev, int index);
|
|
extern int usb_set_configuration(struct usb_device *dev, int configuration);
|
|
|
|
extern void usb_kick_khubd(struct usb_device *dev);
|
|
extern void usb_resume_root_hub(struct usb_device *dev);
|
|
|
|
extern int usb_hub_init(void);
|
|
extern void usb_hub_cleanup(void);
|
|
extern int usb_major_init(void);
|
|
extern void usb_major_cleanup(void);
|
|
extern int usb_host_init(void);
|
|
extern void usb_host_cleanup(void);
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
|
|
extern int usb_resume_both(struct usb_device *udev);
|
|
extern int usb_port_suspend(struct usb_device *dev);
|
|
extern int usb_port_resume(struct usb_device *dev);
|
|
|
|
static inline void usb_pm_lock(struct usb_device *udev)
|
|
{
|
|
mutex_lock_nested(&udev->pm_mutex, udev->level);
|
|
}
|
|
|
|
static inline void usb_pm_unlock(struct usb_device *udev)
|
|
{
|
|
mutex_unlock(&udev->pm_mutex);
|
|
}
|
|
|
|
#else
|
|
|
|
#define usb_suspend_both(udev, msg) 0
|
|
static inline int usb_resume_both(struct usb_device *udev)
|
|
{
|
|
return 0;
|
|
}
|
|
#define usb_port_suspend(dev) 0
|
|
#define usb_port_resume(dev) 0
|
|
static inline void usb_pm_lock(struct usb_device *udev) {}
|
|
static inline void usb_pm_unlock(struct usb_device *udev) {}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_SUSPEND
|
|
|
|
#define USB_AUTOSUSPEND_DELAY (HZ*2)
|
|
|
|
extern void usb_autosuspend_device(struct usb_device *udev, int dec_busy_cnt);
|
|
extern int usb_autoresume_device(struct usb_device *udev, int inc_busy_cnt);
|
|
|
|
#else
|
|
|
|
#define usb_autosuspend_device(udev, dec_busy_cnt) do {} while (0)
|
|
static inline int usb_autoresume_device(struct usb_device *udev,
|
|
int inc_busy_cnt)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
extern struct workqueue_struct *ksuspend_usb_wq;
|
|
extern struct bus_type usb_bus_type;
|
|
extern struct usb_device_driver usb_generic_driver;
|
|
|
|
/* Here's how we tell apart devices and interfaces. Luckily there's
|
|
* no such thing as a platform USB device, so we can steal the use
|
|
* of the platform_data field. */
|
|
|
|
static inline int is_usb_device(const struct device *dev)
|
|
{
|
|
return dev->platform_data == &usb_generic_driver;
|
|
}
|
|
|
|
/* Do the same for device drivers and interface drivers. */
|
|
|
|
static inline int is_usb_device_driver(struct device_driver *drv)
|
|
{
|
|
return container_of(drv, struct usbdrv_wrap, driver)->
|
|
for_devices;
|
|
}
|
|
|
|
/* Interfaces and their "power state" are owned by usbcore */
|
|
|
|
static inline void mark_active(struct usb_interface *f)
|
|
{
|
|
f->is_active = 1;
|
|
}
|
|
|
|
static inline void mark_quiesced(struct usb_interface *f)
|
|
{
|
|
f->is_active = 0;
|
|
}
|
|
|
|
static inline int is_active(const struct usb_interface *f)
|
|
{
|
|
return f->is_active;
|
|
}
|
|
|
|
|
|
/* for labeling diagnostics */
|
|
extern const char *usbcore_name;
|
|
|
|
/* usbfs stuff */
|
|
extern struct mutex usbfs_mutex;
|
|
extern struct usb_driver usbfs_driver;
|
|
extern const struct file_operations usbfs_devices_fops;
|
|
extern const struct file_operations usbfs_device_file_operations;
|
|
extern void usbfs_conn_disc_event(void);
|
|
|
|
extern int usbdev_init(void);
|
|
extern void usbdev_cleanup(void);
|
|
|
|
struct dev_state {
|
|
struct list_head list; /* state list */
|
|
struct usb_device *dev;
|
|
struct file *file;
|
|
spinlock_t lock; /* protects the async urb lists */
|
|
struct list_head async_pending;
|
|
struct list_head async_completed;
|
|
wait_queue_head_t wait; /* wake up if a request completed */
|
|
unsigned int discsignr;
|
|
struct pid *disc_pid;
|
|
uid_t disc_uid, disc_euid;
|
|
void __user *disccontext;
|
|
unsigned long ifclaimed;
|
|
u32 secid;
|
|
};
|
|
|
|
/* internal notify stuff */
|
|
extern void usb_notify_add_device(struct usb_device *udev);
|
|
extern void usb_notify_remove_device(struct usb_device *udev);
|
|
extern void usb_notify_add_bus(struct usb_bus *ubus);
|
|
extern void usb_notify_remove_bus(struct usb_bus *ubus);
|
|
|