Provided by: libgfarm-dev_2.7.11+dfsg-1.1_amd64
gfs_pio_recvfile - receive a Gfarm file to local machine
#include <gfarm/gfarm.h> gfarm_error_t gfs_pio_recvfile(GFS_File r_gf, gfarm_off_t r_off, int w_fd, gfarm_off_t w_off, gfarm_off_t len, gfarm_off_t * recvp);
Receives len bytes of data from the position specified by the offset r_off in a Gfarm file r_gf, to the position specified by the offset w_off of a local file which is pointed by a file descriptor w_fd. If len is -1, this function transfers until the end of the file. The transfered bytes will be stored to the memory pointed by recvp when recvp is not NULL. If len is a positive value, and the value pointed by recvp is less than len, that means the transfer reached EOF.
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).
gfs_pio_create(3), gfs_pio_open(3), gfs_pio_read(3), gfs_pio_sendfile(3)