# File Read Functions

PxIOReadRaw |

## Description

Performs a raw read system call on the specified file. For information on the exact behavior of read, refer to the OS-specific read documentation.

The read system call simply reads data from a file.

## Format

int PxIOReadRaw(PxIOFileHandle handle, void *buf, size_t *nByte);

Where:

handle | The handle of an open file
buf | On input, a storage buffer for the read data; on output, the read data.
nByte | On input, the number of bytes to read; on output, the number of bytes read.

## Return Value

If the function succeeds, a value of PXIO_SUCCESS_STATUS is returned; otherwise, an error value is returned. More information on the nature of the error can be found by calling PxIOGetError.