gfs_pio_sendfile3
Receive a gfarm file to local machine
Usage
#include <gfarm/gfarm.h>
gfarm_error_t gfs_pio_sendfile(GFS_File w_gf, gfarm_off_t w_off, int r_fd, gfarm_off_t r_off, gfarm_off_t len, gfarm_off_t * sentp);
Overview
Sends len bytes of data from the position specified by the offset r_off in a local file which is pointed by a file descriptor r_fd, to the position specified by the offset w_off of a Gfarm file w_gf. If len is -1, this function transfers until the end of the file. The transfered bytes will be stored to the memory pointed by sentp when sentp is not NULL. If len is a positive value, and the value pointed by sentp is less than len, that means the transfer reached EOF.
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).
Releases
5 releases since Debian 9 (Stretch); the text changed 1 time.