[libvirt] [PATCH 00/10] Console coruption with two or more clients series

This series fixes anoying console corruption if two clients try to connect at same time to the console. The current state of this is, that two/more of libvirt iohelpers are spawned on the same time that compete for data from the pty. This causes that each of the consoles get scrambled and unusable. Patches fdstream: Emit stream abort callback even if poll() doesnt. virnetclientstream: Propagate stream error messages to callback daemon: Subscribe the stream event callback for error events. add the ability to abort a stream from the daemon side. fdstream: Add internal function to check if a fdstream is open This patch adds a helper function that checks internally if a fdstream is open and working. virsh: fix console stream error reporting Add flags for virDomainOpenConsole virsh: add support for VIR_DOMAIN_CONSOLE_FORCE flag This patches add instrumentation to virsh that supports the new ability to abort streams from the daemon side and adapts the console callback to handle this. These patches also add a new flag set for virDomainOpenConsole API call that allow users to control the if the existing console connection should be left in place or killed in favor of the new one qemu: Add ability to abort existing console while creating new one lxc: Add ability to abort existing console when creating a new one uml: Add ability to abort existing console when creating a new one These patches modify the hypervisor drivers so that they are aware of existing console connections and refuse to create a new one (or kill the old). The xen driver also supports console in a similar way like the previously mentioned drivers, but lacks the means to store a stream reference permanently. I'll look in if it's possible to modify this driver to support this new functionality. For convinience, to review these patches: git checkout -b console_corruption 33b55fd85ae5435bda53c3cfcbe1385074befd01 git pull git://aeon.pipo.sk/libvirt.git console_corruption Peter Peter Krempa (10): fdstream: Emit stream abort callback even if poll() doesnt. virnetclientstream: Propagate stream error messages to callback daemon: Subscribe the stream event callback for error events. fdstream: Add internal function to check if a fdstream is open virsh: fix console stream error reporting Add flags for virDomainOpenConsole virsh: add support for VIR_DOMAIN_CONSOLE_FORCE flag qemu: Add ability to abort existing console while creating new one lxc: Add ability to abort existing console when creating a new one uml: Add ability to abort existing console when creating a new one daemon/stream.c | 2 +- include/libvirt/libvirt.h.in | 12 +++++++- src/fdstream.c | 61 ++++++++++++++++++++++++++++++++++++++--- src/fdstream.h | 2 + src/libvirt_private.syms | 1 + src/lxc/lxc_driver.c | 28 ++++++++++++++++++- src/qemu/qemu_domain.c | 3 ++ src/qemu/qemu_domain.h | 2 + src/qemu/qemu_driver.c | 23 +++++++++++++++- src/rpc/virnetclientstream.c | 12 +++++--- src/uml/uml_driver.c | 28 ++++++++++++++++++- tools/console.c | 27 ++++++++++++------ tools/console.h | 2 +- tools/virsh.c | 18 +++++++++--- 14 files changed, 192 insertions(+), 29 deletions(-) -- 1.7.3.4