[PATCH 0/4] um: Assorted console related fixes

[Richard Weinberger]

When UML terminates (gracefully or panic) it does not always
cleanup on the host side.
Especially when fd:0,fd:1 is used as console it can leave a misconfigured
stdin/out on the host side.
Also stale processes such as port-helper can left behind.

This series fixes the console exit code to make sure UML
undoes everything it changed on the host side.

Richard Weinberger (4):
  um: Run console exit code also upon kernel panic
  um: os_set_fd_block: Return old blocking mode
  um: chan: Restore blocking mode upon exit
  um: irq: Restore O_ASYNC upon exit

 arch/um/drivers/chan.h               |  1 +
 arch/um/drivers/chan_kern.c          | 11 +++++++----
 arch/um/drivers/chan_user.c          |  2 +-
 arch/um/drivers/mconsole_kern.c      |  2 +-
 arch/um/drivers/stdio_console.c      |  4 ++--
 arch/um/drivers/ubd_user.c           |  2 +-
 arch/um/drivers/xterm.c              |  2 +-
 arch/um/include/shared/uml_console.h | 11 +++++++++++
 arch/um/kernel/irq.c                 |  5 ++++-
 arch/um/kernel/um_arch.c             |  8 +++++---
 arch/um/os-Linux/file.c              |  5 ++++-
 11 files changed, 38 insertions(+), 15 deletions(-)
 create mode 100644 arch/um/include/shared/uml_console.h

-- 
2.26.2