kvtree_io.h

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#ifndef KVTREE_IO_H
#define KVTREE_IO_H
 
#include <config.h>
#include <stdarg.h>
#include <sys/types.h>
 
/* compute crc32 */
#include <zlib.h>
 
#ifndef KVTREE_MAX_LINE
#define KVTREE_MAX_LINE (1024)
#endif
 
/* adds byte swapping routines */
#if defined(__APPLE__)
#include "machine/endian.h"
#else
#include "endian.h"
#endif
 
#ifdef HAVE_BYTESWAP_H
#include "byteswap.h"
#else
#include "kvtree_byteswap.h"
#endif
 
#if __BYTE_ORDER == __LITTLE_ENDIAN
#ifdef HAVE_BYTESWAP_H
# define kvtree_ntoh16(x) bswap_16(x)
# define kvtree_ntoh32(x) bswap_32(x)
# define kvtree_ntoh64(x) bswap_64(x)
# define kvtree_hton16(x) bswap_16(x)
# define kvtree_hton32(x) bswap_32(x)
# define kvtree_hton64(x) bswap_64(x)
#else
# define kvtree_ntoh16(x) kvtree_bswap_16(x)
# define kvtree_ntoh32(x) kvtree_bswap_32(x)
# define kvtree_ntoh64(x) kvtree_bswap_64(x)
# define kvtree_hton16(x) kvtree_bswap_16(x)
# define kvtree_hton32(x) kvtree_bswap_32(x)
# define kvtree_hton64(x) kvtree_bswap_64(x)
#endif
#else
# define kvtree_ntoh16(x) (x)
# define kvtree_ntoh32(x) (x)
# define kvtree_ntoh64(x) (x)
# define kvtree_hton16(x) (x)
# define kvtree_hton32(x) (x)
# define kvtree_hton64(x) (x)
#endif
 
#define KVTREE_OPEN_TRIES (5)
#define KVTREE_OPEN_USLEEP (100)
 
 
mode_t kvtree_getmode(int read, int write, int execute);
 
int kvtree_open(const char* file, int flags, ...);
 
int kvtree_close(const char* file, int fd);
 
int kvtree_file_lock_write(const char* file, int fd);
int kvtree_file_unlock(const char* file, int fd);
 
int kvtree_open_with_lock(const char* file, int flags, mode_t mode, int write);
 
int kvtree_close_with_unlock(const char* file, int fd);
 
int kvtree_lseek(const char* file, int fd, off_t pos, int whence);
 
ssize_t kvtree_read_attempt(const char* file, int fd, void* buf, size_t size);
 
ssize_t kvtree_write_attempt(const char* file, int fd, const void* buf, size_t size);
 
int kvtree_file_is_readable(const char* file);
 
#endif