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  #   ˆÆÅƒŒ³Äa–Ým_J*j"Tâ€và[¸TÅ£Ã a    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SCHED_USER_H
#define _LINUX_SCHED_USER_H

#include <linux/uidgid.h>
#include <linux/atomic.h>
#include <linux/percpu_counter.h>
#include <linux/refcount.h>
#include <linux/ratelimit.h>

#include <linux/rh_kabi.h>

/*
 * Some day this will be a full-fledged user tracking system..
 */
struct user_struct {
	refcount_t __count;	/* reference count */
#ifdef CONFIG_EPOLL
	struct percpu_counter epoll_watches; /* The number of file descriptors currently watched */
#endif
	unsigned long unix_inflight;	/* How many files in flight in unix sockets */
	atomic_long_t pipe_bufs;  /* how many pages are allocated in pipe buffers */

	/* Hash table maintenance information */
	struct hlist_node uidhash_node;
	kuid_t uid;

#if defined(CONFIG_PERF_EVENTS) || defined(CONFIG_BPF_SYSCALL) || \
	defined(CONFIG_NET) || defined(CONFIG_IO_URING) || \
	defined(CONFIG_VFIO_PCI_ZDEV_KVM) || IS_ENABLED(CONFIG_IOMMUFD)
	atomic_long_t locked_vm;
#endif
#ifdef CONFIG_WATCH_QUEUE
	atomic_t nr_watches;	/* The number of watches this user currently has */
#endif

	/* Miscellaneous per-user rate limit */
	struct ratelimit_state ratelimit;

	RH_KABI_RESERVE(1)
	RH_KABI_RESERVE(2)
};

extern int uids_sysfs_init(void);

extern struct user_struct *find_user(kuid_t);

extern struct user_struct root_user;
#define INIT_USER (&root_user)


/* per-UID process charging. */
extern struct user_struct * alloc_uid(kuid_t);
static inline struct user_struct *get_uid(struct user_struct *u)
{
	refcount_inc(&u->__count);
	return u;
}
extern void free_uid(struct user_struct *);

#endif /* _LINUX_SCHED_USER_H */
     ˆÇÆƒy·œÅ¾Ã !Š    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_VIRTIO_H
#define _LINUX_VIRTIO_H
/* Everything a virtio driver needs to work with any particular virtio
 * implementation. */
#include <linux/types.h>
#include <linux/scatterlist.h>
#include <linux/spinlock.h>
#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <linux/gfp.h>
#include <linux/dma-mapping.h>

/**
 * struct virtqueue - a queue to register buffers for sending or receiving.
 * @list: the chain of virtqueues for this device
 * @callback: the function to call when buffers are consumed (can be NULL).
 * @name: the name of this virtqueue (mainly for debugging)
 * @vdev: the virtio device this queue was created for.
 * @priv: a pointer for the virtqueue implementation to use.
 * @index: the zero-based ordinal number for this queue.
 * @num_free: number of elements we expect to be able to fit.
 * @num_max: the maximum number of elements supported by the device.
 * @reset: vq is in reset state or not.
 *
 * A note on @num_free: with indirect buffers, each buffer needs one
 * element in the queue, otherwise a buffer will need one element per
 * sg element.
 */
struct virtqueue {
	struct list_head list;
	void (*callback)(struct virtqueue *vq);
	const char *name;
	struct virtio_device *vdev;
	unsigned int index;
	unsigned int num_free;
	unsigned int num_max;
	bool reset;
	void *priv;
};

int virtqueue_add_outbuf(struct virtqueue *vq,
			 struct scatterlist sg[], unsigned int num,
			 void *data,
			 gfp_t gfp);

int virtqueue_add_inbuf(struct virtqueue *vq,
			struct scatterlist sg[], unsigned int num,
			void *data,
			gfp_t gfp);

int virtqueue_add_inbuf_ctx(struct virtqueue *vq,
			    struct scatterlist sg[], unsigned int num,
			    void *data,
			    void *ctx,
			    gfp_t gfp);

int virtqueue_add_sgs(struct virtqueue *vq,
		      struct scatterlist *sgs[],
		      unsigned int out_sgs,
		      unsigned int in_sgs,
		      void *data,
		      gfp_t gfp);

struct device *virtqueue_dma_dev(struct virtqueue *vq);

bool virtqueue_kick(struct virtqueue *vq);

bool virtqueue_kick_prepare(struct virtqueue *vq);

bool virtqueue_notify(struct virtqueue *vq);

void *virtqueue_get_buf(struct virtqueue *vq, unsigned int *len);

void *virtqueue_get_buf_ctx(struct virtqueue *vq, unsigned int *len,
			    void **ctx);

void virtqueue_disable_cb(struct virtqueue *vq);

bool