#include <gfarm/gfarm.h>
gfarm_error_t gfs_pio_read( |
gf, | |
buffer, | ||
size, | ||
np) ; |
GFS_File gf
;void * buffer
;int size
;int * np
;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.
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.
An error except the above occurred. The reason is shown by gfarm_error_string(3).