Man page - gfs_pio_read(3)

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Manual

GFS_PIO_READ

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
SEE ALSO

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)