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foolowup: improve/add comments and spacing

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2018-06-29 11:57:49 +02:00
parent e97f807c38
commit aea06195b7
1 changed files with 4 additions and 3 deletions
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7
src/PVE/RESTEnvironment.pm
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@ -496,10 +496,11 @@ sub fork_worker {
$SIG{CHLD} = $SIG{PIPE} = 'DEFAULT';
$SIG{TTOU} = 'IGNORE';
# set sess/process group - we want to be able to kill the
# whole process group
# set session/process group allows to kill the process group
if ($sync && -t STDIN) {
POSIX::setpgid(0,0) or die "failed to setpgid: $!\n";;
# some sync'ed workers operate on the tty but setsid sessions lose
# the tty, so just create a new pgroup and give it the tty
POSIX::setpgid(0, 0) or die "failed to setpgid: $!\n";;
POSIX::tcsetpgrp(fileno(STDIN), $$) or die "failed to tcsetpgrp: $!\n";
} else {
POSIX::setsid();