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Kataoka Katsuki
d66c39d5c5
Live handoff refused any session with more than 64 panes. The pane count was checked twice against MAX_FDS_PER_HANDOFF, and the transfer itself put every pane's pty master into one SCM_RIGHTS control message, so the guard was the only thing keeping the send inside the kernel's per-message limit. A session past the limit could only be updated by closing panes or by a normal restart, which ends every pane process. Send the descriptors in batches of 64 instead and drop both guards. The receiving side accumulates across recvmsg calls until the expected count arrives, bounds every SCM_RIGHTS payload it reads by the control bytes the kernel returned, rejects a batch that carries more descriptors than it asked for, and closes the descriptors it already holds on any failure. A session of 64 panes or fewer still produces one batch, so the bytes on the wire are unchanged and HANDOFF_VERSION stays at 1. refs #3393 Co-authored-by: kataokatsuki <kataokatsuki@users.noreply.github.com> Co-authored-by: JJ Liebig <jonathan.liebig@gmail.com>