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This commit is contained in:
Vitaliy Filippov
2024-05-15 11:06:01 +03:00
parent 44692d148a
commit c79b38bd26
219 changed files with 465 additions and 433 deletions
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src/client/vitastor_c.h
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// Copyright (c) Vitaliy Filippov, 2019+
// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
// Simplified C client library for QEMU, fio and other external drivers
#ifndef VITASTOR_QEMU_PROXY_H
#define VITASTOR_QEMU_PROXY_H
// C API wrapper version
#define VITASTOR_C_API_VERSION 4
#ifndef POOL_ID_BITS
#define POOL_ID_BITS 16
#endif
#include <stdint.h>
#include <sys/uio.h>
#ifdef __cplusplus
extern "C" {
#endif
struct vitastor_c;
typedef struct vitastor_c vitastor_c;
typedef void VitastorReadHandler(void *opaque, long retval, uint64_t version);
typedef void VitastorIOHandler(void *opaque, long retval);
typedef void VitastorReadBitmapHandler(void *opaque, long retval, uint8_t *bitmap);
// QEMU
typedef void IOHandler(void *opaque);
// is_external and poll_fn are not required, but are here for compatibility
typedef void QEMUSetFDHandler(void *ctx, int fd, int is_external, IOHandler *fd_read, IOHandler *fd_write, void *poll_fn, void *opaque);
vitastor_c *vitastor_c_create_qemu(QEMUSetFDHandler *aio_set_fd_handler, void *aio_context,
const char *config_path, const char *etcd_host, const char *etcd_prefix,
int use_rdma, const char *rdma_device, int rdma_port_num, int rdma_gid_index, int rdma_mtu, int log_level);
vitastor_c *vitastor_c_create_qemu_uring(QEMUSetFDHandler *aio_set_fd_handler, void *aio_context,
const char *config_path, const char *etcd_host, const char *etcd_prefix,
int use_rdma, const char *rdma_device, int rdma_port_num, int rdma_gid_index, int rdma_mtu, int log_level);
vitastor_c *vitastor_c_create_uring(const char *config_path, const char *etcd_host, const char *etcd_prefix,
int use_rdma, const char *rdma_device, int rdma_port_num, int rdma_gid_index, int rdma_mtu, int log_level);
vitastor_c *vitastor_c_create_uring_json(const char **options, int options_len);
vitastor_c *vitastor_c_create_epoll_json(const char **options, int options_len);
void* vitastor_c_get_internal_client(vitastor_c *client);
void vitastor_c_destroy(vitastor_c *client);
int vitastor_c_is_ready(vitastor_c *client);
int vitastor_c_uring_register_eventfd(vitastor_c *client);
void vitastor_c_uring_wait_ready(vitastor_c *client);
void vitastor_c_uring_handle_events(vitastor_c *client);
void vitastor_c_uring_wait_events(vitastor_c *client);
int vitastor_c_uring_has_work(vitastor_c *client);
int vitastor_c_epoll_get_fd(vitastor_c *client);
void vitastor_c_epoll_handle_events(vitastor_c *client, int timeout);
void vitastor_c_read(vitastor_c *client, uint64_t inode, uint64_t offset, uint64_t len,
struct iovec *iov, int iovcnt, VitastorReadHandler cb, void *opaque);
void vitastor_c_write(vitastor_c *client, uint64_t inode, uint64_t offset, uint64_t len, uint64_t check_version,
struct iovec *iov, int iovcnt, VitastorIOHandler cb, void *opaque);
void vitastor_c_read_bitmap(vitastor_c *client, uint64_t inode, uint64_t offset, uint64_t len,
int with_parents, VitastorReadBitmapHandler cb, void *opaque);
void vitastor_c_sync(vitastor_c *client, VitastorIOHandler cb, void *opaque);
void vitastor_c_watch_inode(vitastor_c *client, char *image, VitastorIOHandler cb, void *opaque);
void vitastor_c_close_watch(vitastor_c *client, void *handle);
uint64_t vitastor_c_inode_get_size(void *handle);
uint64_t vitastor_c_inode_get_num(void *handle);
uint32_t vitastor_c_inode_get_block_size(vitastor_c *client, uint64_t inode_num);
uint32_t vitastor_c_inode_get_bitmap_granularity(vitastor_c *client, uint64_t inode_num);
int vitastor_c_inode_get_readonly(void *handle);
#ifdef __cplusplus
}
#endif
#endif