rmtfs/rmtfs.h
Bjorn Andersson c35633ab23 storage: Allow read only backing storage
Add a new argument '-r' to prevent writes back to the backing storage.
This is useful for experimenting with the remote storage, without having
the files overwritten.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2019-07-17 12:23:02 -07:00

39 lines
1.2 KiB
C

#ifndef __RMTFS_H__
#define __RMTFS_H__
#include <stdint.h>
#include "qmi_rmtfs.h"
#define SECTOR_SIZE 512
struct qmi_packet {
uint8_t flags;
uint16_t txn_id;
uint16_t msg_id;
uint16_t msg_len;
uint8_t data[];
} __attribute__((__packed__));
struct rmtfs_mem;
struct rmtfs_mem *rmtfs_mem_open(void);
void rmtfs_mem_close(struct rmtfs_mem *rmem);
int64_t rmtfs_mem_alloc(struct rmtfs_mem *rmem, size_t size);
void rmtfs_mem_free(struct rmtfs_mem *rmem);
ssize_t rmtfs_mem_read(struct rmtfs_mem *rmem, unsigned long phys_address, void *buf, ssize_t len);
ssize_t rmtfs_mem_write(struct rmtfs_mem *rmem, unsigned long phys_address, const void *buf, ssize_t len);
struct rmtfd;
int storage_init(const char *storage_root, bool read_only);
struct rmtfd *storage_open(unsigned node, const char *path);
struct rmtfd *storage_get(unsigned node, int caller_id);
void storage_close(struct rmtfd *rmtfd);
int storage_get_caller_id(const struct rmtfd *rmtfd);
int storage_get_error(const struct rmtfd *rmtfd);
void storage_exit(void);
ssize_t storage_pread(const struct rmtfd *rmtfd, void *buf, size_t nbyte, off_t offset);
ssize_t storage_pwrite(struct rmtfd *rmtfd, const void *buf, size_t nbyte, off_t offset);
#endif