mirror of
https://github.com/qemu/qemu.git
synced 2026-02-04 05:35:39 +00:00
886898baad
Libguestfs wants to use qemu to run a captive appliance. When the program linked to libguestfs exits, we want qemu to be cleaned up. Libguestfs goes to great lengths to do this at the moment: it either forks a separate process to ensure clean-up is done, or it asks libvirt to clean up the qemu process. However this is complicated and not totally reliable. On Linux, FreeBSD and macOS, there are mechanisms to ensure a signal or message is delivered to a process when its parent process goes away. The qemu test suite even uses this mechanism on Linux (see PR_SET_PDEATHSIG in tests/qtest/libqtest.c). In nbdkit we have long had the concept of running nbdkit captively, and we have the nbdkit --exit-with-parent flag to help (https://libguestfs.org/nbdkit-captive.1.html#EXIT-WITH-PARENT) This commit adds the same mechanism. The syntax is: qemu -run-with exit-with-parent=on [...] This is not a feature that most typical users of qemu (for running general purpose, long-lived VMs) should use, so it defaults to off. The exit-with-parent.[ch] files are copied from nbdkit, where they have a 3-clause BSD license which is compatible with qemu: https://gitlab.com/nbdkit/nbdkit/-/tree/master/common/utils?ref_type=heads Thanks: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Richard W.M. Jones <rjones@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
46 lines
917 B
Meson
46 lines
917 B
Meson
specific_ss.add(when: 'CONFIG_SYSTEM_ONLY', if_true: [files(
|
|
'arch_init.c',
|
|
'globals-target.c',
|
|
)])
|
|
|
|
system_ss.add(files(
|
|
'vl.c',
|
|
), sdl, libpmem, libdaxctl)
|
|
|
|
system_ss.add(files(
|
|
'balloon.c',
|
|
'bootdevice.c',
|
|
'cpus.c',
|
|
'cpu-timers.c',
|
|
'datadir.c',
|
|
'dirtylimit.c',
|
|
'dma-helpers.c',
|
|
'exit-with-parent.c',
|
|
'globals.c',
|
|
'ioport.c',
|
|
'ram-block-attributes.c',
|
|
'memory_mapping.c',
|
|
'memory.c',
|
|
'physmem.c',
|
|
'qdev-monitor.c',
|
|
'qtest.c',
|
|
'rtc.c',
|
|
'runstate-action.c',
|
|
'runstate-hmp-cmds.c',
|
|
'runstate.c',
|
|
'tpm-hmp-cmds.c',
|
|
'watchpoint.c',
|
|
))
|
|
|
|
if have_tpm
|
|
system_ss.add(files('tpm.c'))
|
|
endif
|
|
|
|
system_ss.add(when: seccomp, if_true: files('qemu-seccomp.c'))
|
|
system_ss.add(when: 'CONFIG_DEVICE_TREE',
|
|
if_true: [fdt, files('device_tree.c')],
|
|
if_false: files('device_tree-stub.c'))
|
|
if host_os == 'linux'
|
|
system_ss.add(files('async-teardown.c'))
|
|
endif
|