splice_from_pipe_feed (9) Linux Manual Page
splice_from_pipe_feed – feed available data from a pipe to a file
Synopsis
int splice_from_pipe_feed(struct pipe_inode_info *pipe, struct splice_desc *sd, splice_actor *actor);Arguments
pipe
-
- pipe to splice from
sd
- information to actor
actor
- handler that splices the data
Description
This function loops over the pipe and calls actor to do the actual moving of a single struct pipe_buffer to the desired destination. It returns when there’s no more buffers left in the pipe or if the requested number of bytes (sd->total_len) have been copied. It returns a positive number (one) if the pipe needs to be filled with more data, zero if the required number of bytes have been copied and -errno on error.
This, together with splice_from_pipe_{begin,end,next}, may be used to implement the functionality of __splice_from_pipe when locking is required around copying the pipe buffers to the destination.