linux-master/fs/splice.c

3  * "splice": joining two ropes together by interweaving their strands.
9  * The traditional unix read/write is extended with a "splice()" operation
25 #include <linux/splice.h>
45  * here if set to avoid blocking other users of this pipe if splice is
130 		 * splice, if this is the first page.
302  * copy_splice_read -  Copy data from a file and splice the copy into a pipe
305  * @pipe: The pipe to splice into
306  * @len: The amount to splice
427  * @pipe:	pipe to splice from
511  * splice_from_pipe_next - wait for some data to splice from
512  * @pipe:	pipe to splice from
513  * @sd:		information about the splice operation
559  * @sd:		information about the splice operation
574  * @pipe:	pipe to splice from
575  * @sd:		information about the splice operation
589  * __splice_from_pipe - splice data from a pipe to given actor
590  * @pipe:	pipe to splice from
620  * splice_from_pipe - splice data from a pipe to a file
621  * @pipe:	pipe to splice from
622  * @out:	file to splice to
624  * @len:	how many bytes to splice
625  * @flags:	splice modifier flags
653  * iter_file_splice_write - splice data from a pipe to a file
657  * @len:	number of bytes to splice
658  * @flags:	splice modifier flags
787  * splice_to_socket - splice data from a pipe to a socket
788  * @pipe:	pipe to splice from
791  * @len:	number of bytes to splice
792  * @flags:	splice modifier flags
928 		"splice %s not supported for file %pD4 (pid: %d comm: %.20s)\n",
934  * Attempt to initiate a splice from pipe to file.
981 	 * buffer, copy into it and splice that into the pipe.
989  * vfs_splice_read - Read data from a file and splice it into a pipe
990  * @in:		File to splice from
992  * @pipe:	Pipe to splice to
993  * @len:	Number of bytes to splice
1019  * @in:		file to splice from
1020  * @sd:		actor information on where to splice to
1024  *    This is a special case helper to splice directly between two
1067 	 * Do the splice.
1215  * @in:		file to splice from
1217  * @out:	file to splice to
1219  * @len:	number of bytes to splice
1220  * @flags:	splice modifier flags
1223  *    For use by do_sendfile(). splice can easily emulate sendfile, but
1225  *    (splice in + splice out, as compared to just sendfile()). So this helper
1226  *    can splice directly through a process-private pipe.
1240  * @in:		file to splice from
1242  * @out:	file to splice to
1244  * @len:	number of bytes to splice
1303  * Determine where to splice to/from.
1536  * as splice-from-memory, where the regular splice is splice-from-file (or
1634 SYSCALL_DEFINE6(splice, int, fd_in, loff_t __user *, off_in,