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restore_vma_archive: do not overwrite global signal handlers

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perls 'local' must be either used in front of each $SIG{...}
assignments or they must be put in a list, else it affects only the
first variable and the rest are *not* in local context.

This may cause weird behaviour where daemons seemingly do not get
terminating signals delivered correctly and thus may not shutdown
gracefully anymore.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2017-09-06 13:29:07 +02:00 committed by Wolfgang Bumiller
parent eaae66be9f
commit 5b97ef2441
1 changed files with 4 additions and 3 deletions
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7
PVE/QemuServer.pm
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@ -5482,9 +5482,10 @@ sub restore_vma_archive {
rmtree $tmpdir;
# disable interrupts (always do cleanups)
local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = sub {
warn "got interrupt - ignored\n";
};
local $SIG{INT} =
local $SIG{TERM} =
local $SIG{QUIT} =
local $SIG{HUP} = sub { warn "got interrupt - ignored\n"; };
my $mapfifo = "/var/tmp/vzdumptmp$$.fifo";
POSIX::mkfifo($mapfifo, 0600);