osal_fileops

函数
void *	osal_klib_fopen (const char *file, int flags, int mode)
	open file and return file pointer.
void	osal_klib_fclose (void *filp)
	close file.
int	osal_klib_fwrite (const char *buf, unsigned long size, void *filp)
	kernel write function.
int	osal_klib_fread (char *buf, unsigned long size, void *filp)
	Kernel read function.
void	osal_klib_fsync (void *filp)
	Perform a fsync or fdatasync on a file
int	osal_klib_fseek (long long offset, int whence, void *filp)
	Kernel file seek function.
int	osal_klib_unlink (const char *path)
	Removes a file or directory.
int	osal_klib_ftruncate (void *filp, unsigned long len)
	Truncates the size of the file to the specified size.

详细描述

函数说明

osal_klib_fclose()

void osal_klib_fclose

(

void *

filp

)

close file.

参数

filp	[in] the result of osal_klib_fopen

Support System:

linux liteos seliteos freertos.

osal_klib_fopen()

void * osal_klib_fopen	(	const char *	file,
		int	flags,
		int	mode
	)

open file and return file pointer.

参数

file	[in] the filename of file
flags	[in] the opreation flag example: OSAL_O_CREAT
mode	[in] the mode example: OSAL_O_RDONLY

返回

void* / null

Support System:

linux liteos seliteos freertos.

osal_klib_fread()

int osal_klib_fread	(	char *	buf,
		unsigned long	size,
		void *	filp
	)

Kernel read function.

参数

buf	[out] the buffer you want to read in
size	[in] the size of buffer
filp	[in] the result of osal_klib_fopen

返回

The length that has been read.

Support System:

linux liteos seliteos freertos.

osal_klib_fseek()

int osal_klib_fseek	(	long long	offset,
		int	whence,
		void *	filp
	)

Kernel file seek function.

参数

offset	[in] the new position of file
whence	[in] the method of lseek,example:OSAL_SEEK_SET
filp	[in] the result of osal_klib_fopen

Support System:

linux liteos seliteos freertos.

osal_klib_fsync()

void osal_klib_fsync

(

void *

filp

)

Perform a fsync or fdatasync on a file

参数

filp	[in] the result of osal_klib_fopen

返回

The value 0 indicates success, and other values indicate failure.

Support System:

linux liteos.

osal_klib_ftruncate()

int osal_klib_ftruncate	(	void *	filp,
		unsigned long	len
	)

Truncates the size of the file to the specified size.

参数

filp	[in] the result of osal_klib_fopen
len	[in] the len of ftruncate

返回

The value 0 indicates success, and other values indicate failure.

Support System:

seliteos.

osal_klib_fwrite()

int osal_klib_fwrite	(	const char *	buf,
		unsigned long	size,
		void *	filp
	)

kernel write function.

参数

buf	[in] the buffer you want to write
size	[in] the size of buffer
filp	[in] the result of osal_klib_fopen

返回

The length that has been written.

Support System:

linux liteos seliteos freertos.

osal_klib_unlink()

int osal_klib_unlink

(

const char *

path

)

Removes a file or directory.

参数

path	[in] the file path of file

注意

If removing a directory, the directory must be empty.

返回

The value 0 indicates success, and other values indicate failure.

Support System:

seliteos.