SG_SET_FORCE_PACK_ID 0x227b. Assumes 3rd argument is pointing to an int. 0 (default) instructs read() to return the oldest (written) packet if multiple packets are waiting to be read. 1 instructs read() to view the sg_io_hdr::pack_id (or sg_header::pack_id) as input and return the oldest packet matching that pack_id or wait until it arrives. If the file descriptor is in O_NONBLOCK state, rather than wait this ioctl() will yield EAGAIN. As a special case the pack_id of -1 given to read() in the mode will match the oldest packet. Only the current file descriptor is affected by this command. [Academic results for Distributed computing] .:: egyptinnovate.com ::. .:: www.telerik.com ::. .:: boss.why3s.cc ::. .:: fun79bio.tinyblogging.com ::. .:: co.pinterest.com ::. .:: hosted.weblate.org ::. .:: ml007.k12.sd.us ::. .:: writeablog.net ::. .:: decidim.derechoaljuego.digital ::. [Reference: Microservices] .:: aboutpharmacistjobs.com ::. .:: app.staffmeup.com ::.