read (Debugging with ROCGDB)

Next: write, Previous: close, Up: List of Supported Calls [Contents][Index]

#### read

Synopsis:

      int read(int fd, void *buf, unsigned int count);

Request:

  ‘`Fread,fd,bufptr,count`’

Return value:

  On success, the number of bytes read is returned. Zero indicates end of file. If count is zero, read returns zero as well. On error, -1 is returned.

Errors:
  `EBADF`

    fd is not a valid file descriptor or is not open for reading.

  `EFAULT`

    bufptr is an invalid pointer value.

  `EINTR`

    The call was interrupted by the user.