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authorTill Kamppeter <tkamppeter@mandriva.com>2002-01-28 23:19:40 +0000
committerTill Kamppeter <tkamppeter@mandriva.com>2002-01-28 23:19:40 +0000
commit8de8e2529e3f8742014d2a3fffb851eb036a9da9 (patch)
tree8f28274ec5016580d8eca7568662f98ce51b89ce /perl-install/printer.pm
parent0da9a4e3256d2bd1e2351cdc06a26ab0d001cba5 (diff)
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Replaced "sleep" commands by a subroutine which waits exactly until CUPS is ready.
CUPS >= 1.1.12 needs to "know" all devices, let CUPS restart if a device is not "known" to it.
Diffstat (limited to 'perl-install/printer.pm')
-rw-r--r--perl-install/printer.pm71
1 files changed, 66 insertions, 5 deletions
diff --git a/perl-install/printer.pm b/perl-install/printer.pm
index 8e50cc043..7ebf478d5 100644
--- a/perl-install/printer.pm
+++ b/perl-install/printer.pm
@@ -126,13 +126,29 @@ sub set_permissions {
sub restart_service ($) {
my ($service) = @_;
run_program::rooted($prefix, "/etc/rc.d/init.d/$service", "restart");
- if (($? >> 8) != 0) {return 0;} else {return 1;}
+ if (($? >> 8) != 0) {
+ return 0;
+ } else {
+ # CUPS needs some time to come up.
+ if ($service eq "cups") {
+ wait_for_cups();
+ }
+ return 1;
+ }
}
sub start_service ($) {
my ($service) = @_;
run_program::rooted($prefix, "/etc/rc.d/init.d/$service", "start");
- if (($? >> 8) != 0) {return 0;} else {return 1;}
+ if (($? >> 8) != 0) {
+ return 0;
+ } else {
+ # CUPS needs some time to come up.
+ if ($service eq "cups") {
+ wait_for_cups();
+ }
+ return 1;
+ }
}
sub stop_service ($) {
@@ -182,17 +198,62 @@ sub SIGHUP_daemon {
} elsif ($service eq "devfs") {
$daemon = "devfsd";
} else {
- return 1;
+ $daemon = $service;
}
# Send the SIGHUP
run_program::rooted($prefix, "/usr/bin/killall", "-HUP", $daemon);
# CUPS needs some time to come up.
if ($service eq "cups") {
- sleep 5;
+ wait_for_cups();
}
return 1;
}
+sub wait_for_cups {
+ # CUPS needs some time to come up. Wait up to 30 seconds, checking
+ # whether CUPS is ready.
+ my $cupsready = 0;
+ my $i;
+ for ($i = 0; $i < 30; $i++) {
+ run_program::rooted($prefix, "/usr/bin/lpstat", "-r");
+ if (($? >> 8) != 0) {
+ # CUPS is not ready, continue
+ sleep 1;
+ } else {
+ # CUPS is ready, quit
+ $cupsready = 1;
+ last;
+ }
+ }
+ return cupsready;
+}
+
+sub assure_device_is_available_for_cups {
+ # Checks whether CUPS already "knows" a certain port, it does not
+ # know it usually when the appropriate kernel module is loaded
+ # after CUPS was started or when the printer is turned on after
+ # CUPS was started. CUPS 1.1.12 and newer refuses to set up queues
+ # on devices which it does not know, it points these queues to
+ # file:/dev/null instead. Restart CUPS if necessary to assure that
+ # CUPS knows the device.
+ my ($device) = @_;
+ local *F;
+ open F, ($::testing ? "$prefix" : "chroot $prefix/ ") .
+ "/bin/sh -c \"export LC_ALL=C; /usr/sbin/lpinfo -v\" |" ||
+ die "Could not run \"lpinfo\"!";
+ while (<F>) {
+ print "##### $device $_";
+ if ($_ =~ /$device/) { # Found a line containing the device name,
+ # so CUPS knows it.
+ close F;
+ return 1;
+ }
+ }
+ close F;
+ return SIGHUP_daemon("cups");
+}
+
+
sub network_running {
# If the network is not running return 0, otherwise 1.
local *F;
@@ -1168,7 +1229,7 @@ sub restart_queue($) {
for ($printer->{SPOOLER}) {
/cups/ && do {
#- restart cups.
- restart_service("cups"); sleep 1;
+ restart_service("cups");
last };
/lpr|lprng/ && do {
#- restart lpd.