120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
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/* Copyright 2008 The Android Open Source Project
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*/
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#ifndef _BINDER_H_
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#define _BINDER_H_
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#include <sys/ioctl.h>
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#include <linux/binder.h>
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struct binder_state;
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struct binder_object
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{
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uint32_t type;
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uint32_t flags;
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void *pointer;
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void *cookie;
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};
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struct binder_txn
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{
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void *target;
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void *cookie;
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uint32_t code;
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uint32_t flags;
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uint32_t sender_pid;
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uint32_t sender_euid;
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uint32_t data_size;
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uint32_t offs_size;
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void *data;
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void *offs;
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};
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struct binder_io
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{
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char *data; /* pointer to read/write from */
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uint32_t *offs; /* array of offsets */
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uint32_t data_avail; /* bytes available in data buffer */
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uint32_t offs_avail; /* entries available in offsets array */
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char *data0; /* start of data buffer */
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uint32_t *offs0; /* start of offsets buffer */
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uint32_t flags;
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uint32_t unused;
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};
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struct binder_death {
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void (*func)(struct binder_state *bs, void *ptr);
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void *ptr;
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};
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/* the one magic object */
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#define BINDER_SERVICE_MANAGER ((void*) 0)
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#define SVC_MGR_NAME "android.os.IServiceManager"
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enum {
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SVC_MGR_GET_SERVICE = 1,
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SVC_MGR_CHECK_SERVICE,
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SVC_MGR_ADD_SERVICE,
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SVC_MGR_LIST_SERVICES,
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};
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typedef int (*binder_handler)(struct binder_state *bs,
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struct binder_txn *txn,
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struct binder_io *msg,
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struct binder_io *reply);
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struct binder_state *binder_open(unsigned mapsize);
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void binder_close(struct binder_state *bs);
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/* initiate a blocking binder call
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* - returns zero on success
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*/
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int binder_call(struct binder_state *bs,
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struct binder_io *msg, struct binder_io *reply,
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void *target, uint32_t code);
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/* release any state associate with the binder_io
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* - call once any necessary data has been extracted from the
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* binder_io after binder_call() returns
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* - can safely be called even if binder_call() fails
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*/
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void binder_done(struct binder_state *bs,
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struct binder_io *msg, struct binder_io *reply);
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/* manipulate strong references */
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void binder_acquire(struct binder_state *bs, void *ptr);
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void binder_release(struct binder_state *bs, void *ptr);
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void binder_link_to_death(struct binder_state *bs, void *ptr, struct binder_death *death);
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void binder_loop(struct binder_state *bs, binder_handler func);
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int binder_become_context_manager(struct binder_state *bs);
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/* allocate a binder_io, providing a stack-allocated working
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* buffer, size of the working buffer, and how many object
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* offset entries to reserve from the buffer
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*/
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void bio_init(struct binder_io *bio, void *data,
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uint32_t maxdata, uint32_t maxobjects);
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void bio_destroy(struct binder_io *bio);
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void bio_put_obj(struct binder_io *bio, void *ptr);
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void bio_put_ref(struct binder_io *bio, void *ptr);
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void bio_put_uint32(struct binder_io *bio, uint32_t n);
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void bio_put_string16(struct binder_io *bio, const uint16_t *str);
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void bio_put_string16_x(struct binder_io *bio, const char *_str);
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uint32_t bio_get_uint32(struct binder_io *bio);
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uint16_t *bio_get_string16(struct binder_io *bio, uint32_t *sz);
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void *bio_get_obj(struct binder_io *bio);
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void *bio_get_ref(struct binder_io *bio);
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#endif
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