Subversion Repositories HelenOS

/*
 * Copyright (c) 2005 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup libc
 * @{
 */
/** @file
 */

#ifndef LIBC_UNISTD_H_
#define LIBC_UNISTD_H_

#include <sys/types.h>
#include <libarch/config.h>

#ifndef NULL
#define NULL 0
#endif

#define getpagesize()     (PAGE_SIZE)

#ifndef SEEK_SET
    #define SEEK_SET    0
    #define SEEK_CUR    1
    #define SEEK_END    2
#endif

extern ssize_t write(int, const void *, size_t);
extern ssize_t read(int, void *, size_t);
extern off_t lseek(int, off_t, int);
extern int ftruncate(int, off_t);
extern int close(int);
extern int unlink(const char *);
extern int rmdir(const char *);
extern int chdir(const char *);
extern char *getcwd(char *buf, size_t);

extern void _exit(int status);
extern void *sbrk(ssize_t incr);
extern int usleep(unsigned long usec);
extern unsigned int sleep(unsigned int seconds);

#endif

/** @}
 */