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Merge pull request #4078 from mattaezell/makehosts_noclobber

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'makehosts -n' Improvement
This commit is contained in:
Yuan Bai
2017-10-11 11:05:59 +08:00
committed by GitHub
parent ac0ea2d2af 20e203cd5b
commit daaf1d747c
1 changed files with 15 additions and 22 deletions
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37
xCAT-server/lib/xcat/plugins/hosts.pm
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@ -415,39 +415,32 @@ sub process_request
my $domain;
my $lockh;
# lockfile to prevent concurrent executions
open($lockh, ">", "/tmp/xcat/hostsfile.lock");
flock($lockh, LOCK_EX);
# save a backup copy
my $bakname = "/etc/hosts.xcatbak";
copy("/etc/hosts", $bakname);
@hosts = ();
if ($REMOVE)
{
if (-e "/etc/hosts")
# add the localhost entry if trying to create the /etc/hosts from scratch
if ($^O =~ /^aix/i)
{
my $bakname = "/etc/hosts.xcatbak";
rename("/etc/hosts", $bakname);
# add the localhost entry if trying to create the /etc/hosts from scratch
if ($^O =~ /^aix/i)
{
push @hosts, "127.0.0.1 loopback localhost\n";
}
else
{
push @hosts, "127.0.0.1 localhost\n";
}
push @hosts, "127.0.0.1 loopback localhost\n";
}
else
{
push @hosts, "127.0.0.1 localhost\n";
}
}
else
{
if (-e "/etc/hosts")
{
my $bakname = "/etc/hosts.xcatbak";
copy("/etc/hosts", $bakname);
}
# the contents of the /etc/hosts file is saved in the @hosts array
# the @hosts elements are updated and used to re-create the
# /etc/hosts file at the end by the writeout subroutine.
open($lockh, ">", "/tmp/xcat/hostsfile.lock");
flock($lockh, LOCK_EX);
my $rconf;
open($rconf, "/etc/hosts"); # Read file into memory
if ($rconf)