# Synopsis

PDX_MSGT dof_ReadWrite(int io_type, DOF_FILE *file, long nbytes, DOF_OFF_T loc, void *buf)

# Purpose

Read/write a buffered file.

# Description

The specified amount of data will be read/written to/from file.

# Input

## io_type

### DOF_READ

Read data

### DOF_WRITE

Write data

## file

File to read/write

## nbytes

Number of bytes to read/write

## loc

Location within file read/write

## buf

Data buffer (if writing)

# Output

## buf

Data buffer (if reading)

# Return

DOF error code