FAT | RFS | XFS | ZFS

setvbuf()

PROTOTYPE

#include <stdio.h>

int setvbuf(FILE *file, char *buf, int mode, size_t size);

DESCRIPTION

setvbuf() is used in some environments to control how a stream is buffered. buf points to a user-allocated buffer. size is the size of this buffer. mode is one of:

_IOFBF - for fully buffered I/O _IOLBF - for line buffered I/O _IONBF - for unbuffered I/O

For Blunk’s file systems, the buffer size is set at compile time, so setvbuf() has no effect.

If successful, setvbuf() returns 0. Otherwise, it sets errno and returns a non-zero value.

ERROR CODES

EBADF	file is not the handle of an open file.
EFAULT	buf equals NULL.
EINVAL	mode is invalid or the request cannot be honored.
EISDIR	file refers to a directory.