rt-thread/components/dfs/include/dfs_posix.h

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/*
* File : dfs_posix.h
* This file is part of Device File System in RT-Thread RTOS
* COPYRIGHT (C) 2004-2012, RT-Thread Development Team
*
2013-06-26 22:30:40 +08:00
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2009-05-27 Yi.qiu The first version.
* 2010-07-18 Bernard add stat and statfs structure definitions.
* 2011-05-16 Yi.qiu Change parameter name of rename, "new" is C++ key word.
*/
#ifndef __DFS_POSIX_H__
#define __DFS_POSIX_H__
#include <dfs_file.h>
#include <sys/time.h> /* for struct timeval */
#ifdef __cplusplus
extern "C" {
#endif
typedef struct
{
int fd; /* directory file */
char buf[512];
int num;
int cur;
} DIR;
/* directory api*/
int mkdir(const char *path, mode_t mode);
DIR *opendir(const char *name);
struct dirent *readdir(DIR *d);
long telldir(DIR *d);
void seekdir(DIR *d, off_t offset);
void rewinddir(DIR *d);
int closedir(DIR* d);
/* file api*/
int open(const char *file, int flags, int mode);
int close(int d);
#ifdef RT_USING_NEWLIB
_READ_WRITE_RETURN_TYPE _EXFUN(read, (int __fd, void *__buf, size_t __nbyte));
_READ_WRITE_RETURN_TYPE _EXFUN(write, (int __fd, const void *__buf, size_t __nbyte));
#else
int read(int fd, void *buf, size_t len);
int write(int fd, const void *buf, size_t len);
#endif
off_t lseek(int fd, off_t offset, int whence);
int rename(const char *from, const char *to);
int unlink(const char *pathname);
int stat(const char *file, struct stat *buf);
int fstat(int fildes, struct stat *buf);
int fsync(int fildes);
int ioctl(int fildes, int cmd, void *data);
/* directory api*/
int rmdir(const char *path);
int chdir(const char *path);
char *getcwd(char *buf, size_t size);
/* file system api */
int statfs(const char *path, struct statfs *buf);
int access(const char *path, int amode);
int pipe(int fildes[2]);
int mkfifo(const char *path, mode_t mode);
/* poll and select */
#define POLLIN (0x01)
#define POLLRDNORM (0x01)
#define POLLRDBAND (0x01)
#define POLLPRI (0x01)
#define POLLOUT (0x02)
#define POLLWRNORM (0x02)
#define POLLWRBAND (0x02)
#define POLLERR (0x04)
#define POLLHUP (0x08)
#define POLLNVAL (0x10)
#define POLLMASK_DEFAULT (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)
typedef unsigned int nfds_t;
struct pollfd
{
int fd;
short events;
short revents;
};
int poll(struct pollfd *fds, nfds_t nfds, int timeout);
#ifdef RT_USING_LWIP
/* we use lwIP's structure definitions. */
#include <lwip/sockets.h>
#else
#ifndef FD_SET
/* Get the total number of descriptors that we will have to support */
#define FD_SETSIZE (12)
/* We will use a 32-bit bitsets to represent the set of descriptors. How
* many uint32_t's do we need to span all descriptors?
*/
#if FD_SETSIZE <= 32
# define __SELECT_NUINT32 1
#elif FD_SETSIZE <= 64
# define __SELECT_NUINT32 2
#elif FD_SETSIZE <= 96
# define __SELECT_NUINT32 3
#elif FD_SETSIZE <= 128
# define __SELECT_NUINT32 4
#elif FD_SETSIZE <= 160
# define __SELECT_NUINT32 5
#elif FD_SETSIZE <= 192
# define __SELECT_NUINT32 6
#elif FD_SETSIZE <= 224
# define __SELECT_NUINT32 7
#elif FD_SETSIZE <= 256
# define __SELECT_NUINT32 8
#else
# warning "Larger fd_set needed"
#endif
/* These macros map a file descriptor to an index and bit number */
#define _FD_NDX(fd) ((fd) >> 5)
#define _FD_BIT(fd) ((fd) & 0x1f)
/* Standard helper macros */
#define FD_CLR(fd,set) \
((((fd_set*)(set))->arr)[_FD_NDX(fd)] &= ~(1 << _FD_BIT(fd)))
#define FD_SET(fd,set) \
((((fd_set*)(set))->arr)[_FD_NDX(fd)] |= (1 << _FD_BIT(fd)))
#define FD_ISSET(fd,set) \
(((((fd_set*)(set))->arr)[_FD_NDX(fd)] & (1 << _FD_BIT(fd))) != 0)
#define FD_ZERO(set) \
memset((set), 0, sizeof(fd_set))
typedef struct
{
uint32_t arr[__SELECT_NUINT32];
}fd_set;
#endif
#endif
int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
#ifdef __cplusplus
}
#endif
#endif