[libvirt] [PATCH v2 0/6] 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 threads compete for the data from the PTY. This causes that each of the consoles get scrambled and unusable. These patches add mutual exclusion for opening consoles with two different approaches and a option to terminate existing console streams. A sample implementation is done using qemu driver, but i'll add more of them if this will be OK. (They're basicaly the same as in qemu). For convinience, to review these patches: git checkout -b console_corruption 8d16201fe0e63afb5416a8eb7c6478f582ccccc0 git pull git://aeon.pipo.sk/libvirt.git console_dup (The machine should be up most of time) Peter Peter Krempa (6): Add flags for virDomainOpenConsole virsh: add support for VIR_DOMAIN_CONSOLE_FORCE flag fdstream: Emit stream abort callback even if poll() doesnt. fdstream: Add internal callback on stream close util: Add helpers for safe domain console operations qemu: Add ability to abort existing console while creating new one configure.ac | 37 +++- include/libvirt/libvirt.h.in | 12 +- src/Makefile.am | 5 +- src/fdstream.c | 95 +++++++++- src/fdstream.h | 11 + src/libvirt_private.syms | 6 + src/qemu/qemu_domain.c | 5 + src/qemu/qemu_domain.h | 3 + src/qemu/qemu_driver.c | 21 ++- src/util/domain_safe_console.c | 399 ++++++++++++++++++++++++++++++++++++++++ src/util/domain_safe_console.h | 28 +++ tools/console.c | 5 +- tools/console.h | 3 +- tools/virsh.c | 18 ++- 14 files changed, 614 insertions(+), 34 deletions(-) create mode 100644 src/util/domain_safe_console.c create mode 100644 src/util/domain_safe_console.h -- 1.7.3.4