NAME

       gfs_pio_read - binary stream input

SYNOPSIS

       #include <gfarm/gfarm.h>

       gfarm_error_t gfs_pio_read (GFS_File gf, void * buffer, int size, int * np);

DESCRIPTION

       gfs_pio_read()  attempts  to read up to size bytes from the file referenced by gf into the
       buffer starting at buffer, and returns the number of bytes read to the address pointed  by
       np.  On end of file, the number of bytes read is zero.

RETURN VALUES

       GFARM_ERR_NO_ERROR
              The function terminated successfully.

       GFARM_ERR_OPERATION_NOT_PERMITTED
              gf does not specify a regular file.

       GFARM_ERR_BAD_FILE_DESCRIPTOR
              The file descripter specified by gf is not a valid or is not open for reading.

       GFARM_ERR_NO_FILE_SYSTEM_NODE
              There is no available file system node.

       GFARM_ERR_NO_MEMORY
              Insufficient memory was available.

       Others An error except the above occurred.  The reason is shown by gfarm_error_string(3).

SEE ALSO

       gfs_pio_create(3), gfs_pio_open(3)