40n8.me/baseimage-docker
1
0
Fork 0
mirror of /repos/baseimage-docker.git synced 2026-02-27 17:41:59 +01:00
Code Issues Releases Wiki Activity

Correctly reap child processes that are adopted during invocation of init scripts.

Browse Source
This commit is contained in:
Hongli Lai (Phusion)
2014-02-13 15:36:01 +01:00
parent 67c6b089e3
commit c22f8804ad
2 changed files with 18 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
image/my_init
View File

@@ -29,8 +29,7 @@ def reap_child(signum, frame):
except OSError:
pass
def stop_child_process(name):
global pid
def stop_child_process(name, pid):
print("*** Shutting down %s (PID %d)..." % (name, pid))
try:
os.kill(pid, signal.SIGHUP)
@@ -41,15 +40,19 @@ def run_command_killable(*argv):
global pid
filename = argv[0]
pid = os.spawnvp(os.P_NOWAIT, filename, argv)
signal.signal(signal.SIGINT, lambda signum, frame: stop_child_process(filename))
signal.signal(signal.SIGTERM, lambda signum, frame: stop_child_process(filename))
signal.signal(signal.SIGINT, lambda signum, frame: stop_child_process(filename, pid))
signal.signal(signal.SIGTERM, lambda signum, frame: stop_child_process(filename, pid))
try:
this_pid, status = os.waitpid(pid, 0)
except OSError as e:
if e.errno == errno.EINTR:
sys.exit(2)
else:
raise
done = False
while not done:
try:
this_pid, status = os.waitpid(-1, 0)
done = this_pid == pid
except OSError as e:
if e.errno == errno.EINTR:
sys.exit(2)
else:
raise
finally:
signal.signal(signal.SIGINT, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
@@ -74,7 +77,7 @@ signal.signal(signal.SIGCHLD, reap_child)
print("*** Booting runit...")
pid = os.spawnl(os.P_NOWAIT, "/usr/bin/runsvdir", "/usr/bin/runsvdir", "-P", "/etc/service", "log: %s" % ('.' * 395))
print("*** Runit started as PID %d" % pid)
signal.signal(signal.SIGTERM, lambda signum, frame: stop_child_process("runit"))
signal.signal(signal.SIGTERM, lambda signum, frame: stop_child_process("runit", pid))
# Wait for runit, and while waiting, reap any adopted orphans.
done = False