mfsRamWriteFile

mfsRamWriteFile

Syntax

s32 mfsRamWriteFile(MfsDirID dirID, void* buf, s32 offset,u32 len)

Arguments

dirID Directory ID of file

*buf Buffer in which data to be written is stored

offset Write starting position

len Size to be written

Return value

Size of data that was written (a negative value is an error)

Function

Writes data to file

Description

This function writes data to the file specified by dirID. If the address specified by buf is not at a 16-byte boundary, the speed will decrease somewhat because the data is written after being copied to an internal buffer. If the offset value is greater than the file size, an error will occur.

Main errors

MFS_ERR_NOTFOUND Specified file not found

MFS_ERR_DEVICE Device error
An error occurred in an internally called Leo function.
Since a Leo function error is stored in the variable mfsError, check this variable to perform processing.

MFS_ERR_PROTECT Write protected
The file attribute is write protected, or the volume attribute is write protected, or the parent directory is write protected.

MFS_ERR_NOTFOUND	Specified file not found
MFS_ERR_DEVICE	Device error An error occurred in an internally called Leo function. Since a Leo function error is stored in the variable mfsError, check this variable to perform processing.
MFS_ERR_PROTECT	Write protected The file attribute is write protected, or the volume attribute is write protected, or the parent directory is write protected.