#!./perl
-# $Header: pipe.t,v 4.0 91/03/20 01:51:02 lwall Locked $
+BEGIN {
+ chdir 't' if -d 't';
+ @INC = '../lib';
+ require Config; import Config;
+ unless ($Config{'d_fork'}) {
+ print "1..0 # Skip: no fork\n";
+ exit 0;
+ }
+}
$| = 1;
-print "1..8\n";
+print "1..16\n";
-open(PIPE, "|-") || (exec 'tr', '[A-Z]', '[a-z]');
-print PIPE "OK 1\n";
-print PIPE "ok 2\n";
+# External program 'tr' assumed.
+open(PIPE, "|-") || (exec 'tr', 'YX', 'ko');
+print PIPE "Xk 1\n";
+print PIPE "oY 2\n";
close PIPE;
-if (open(PIPE, "-|")) {
- while(<PIPE>) {
- s/^not //;
- print;
+if ($^O eq 'vmesa') {
+ # Doesn't work, yet.
+ for (3..6) {
+ print "ok $_ # skipped\n";
+ }
+} else {
+ if (open(PIPE, "-|")) {
+ while(<PIPE>) {
+ s/^not //;
+ print;
+ }
+ close PIPE; # avoid zombies which disrupt test 12
+ }
+ else {
+ # External program 'echo' assumed.
+ print STDOUT "not ok 3\n";
+ exec 'echo', 'not ok 4';
}
-}
-else {
- print STDOUT "not ok 3\n";
- exec 'echo', 'not ok 4';
-}
-pipe(READER,WRITER) || die "Can't open pipe";
+ pipe(READER,WRITER) || die "Can't open pipe";
-if ($pid = fork) {
- close WRITER;
- while(<READER>) {
- s/^not //;
- y/A-Z/a-z/;
- print;
+ if ($pid = fork) {
+ close WRITER;
+ while(<READER>) {
+ s/^not //;
+ y/A-Z/a-z/;
+ print;
+ }
+ close READER; # avoid zombies which disrupt test 12
+ }
+ else {
+ die "Couldn't fork" unless defined $pid;
+ close READER;
+ print WRITER "not ok 5\n";
+ open(STDOUT,">&WRITER") || die "Can't dup WRITER to STDOUT";
+ close WRITER;
+ # External program 'echo' assumed.
+ exec 'echo', 'not ok 6';
}
}
-else {
- die "Couldn't fork" unless defined $pid;
- close READER;
- print WRITER "not ok 5\n";
- open(STDOUT,">&WRITER") || die "Can't dup WRITER to STDOUT";
- close WRITER;
- exec 'echo', 'not ok 6';
-}
-
+wait; # Collect from $pid
pipe(READER,WRITER) || die "Can't open pipe";
close READER;
$SIG{'PIPE'} = 'broken_pipe';
sub broken_pipe {
+ $SIG{'PIPE'} = 'IGNORE'; # loop preventer
print "ok 7\n";
}
print WRITER "not ok 7\n";
close WRITER;
-
+sleep 1;
print "ok 8\n";
+
+# VMS doesn't like spawning subprocesses that are still connected to
+# STDOUT. Someone should modify tests #9 to #12 to work with VMS.
+
+if ($^O eq 'VMS') {
+ print "ok 9 # skipped\n";
+ print "ok 10 # skipped\n";
+ print "ok 11 # skipped\n";
+ print "ok 12 # skipped\n";
+ exit;
+}
+
+if ($Config{d_sfio} || $^O eq 'machten' || $^O eq 'beos' || $^O eq 'posix-bc') {
+ # Sfio doesn't report failure when closing a broken pipe
+ # that has pending output. Go figure. MachTen doesn't either,
+ # but won't write to broken pipes, so nothing's pending at close.
+ # BeOS will not write to broken pipes, either.
+ # Nor does POSIX-BC.
+ print "ok 9 # skipped\n";
+}
+else {
+ local $SIG{PIPE} = 'IGNORE';
+ open NIL, '|true' or die "open failed: $!";
+ sleep 5;
+ if (print NIL 'foo') {
+ # If print was allowed we had better get an error on close
+ if (close NIL) {
+ print "not ok 9\n";
+ }
+ else {
+ print "ok 9\n";
+ }
+ }
+ else {
+ # If print failed, the close should be clean
+ if (close NIL) {
+ print "ok 9\n";
+ }
+ else {
+ print "not ok 9\n";
+ }
+ }
+}
+
+if ($^O eq 'vmesa') {
+ # These don't work, yet.
+ print "ok 10 # skipped\n";
+ print "ok 11 # skipped\n";
+ print "ok 12 # skipped\n";
+ exit;
+}
+
+# check that errno gets forced to 0 if the piped program exited non-zero
+open NIL, '|exit 23;' or die "fork failed: $!";
+$! = 1;
+if (close NIL) {
+ print "not ok 10\n# successful close\n";
+}
+elsif ($! != 0) {
+ print "not ok 10\n# errno $!\n";
+}
+elsif ($? == 0) {
+ print "not ok 10\n# status 0\n";
+}
+else {
+ print "ok 10\n";
+}
+
+if ($^O eq 'mpeix') {
+ print "ok 11 # skipped\n";
+ print "ok 12 # skipped\n";
+} else {
+ # check that status for the correct process is collected
+ my $zombie = fork or exit 37;
+ my $pipe = open *FH, "sleep 2;exit 13|" or die "Open: $!\n";
+ $SIG{ALRM} = sub { return };
+ alarm(1);
+ my $close = close FH;
+ if ($? == 13*256 && ! length $close && ! $!) {
+ print "ok 11\n";
+ } else {
+ print "not ok 11\n# close $close\$?=$? \$!=", $!+0, ":$!\n";
+ };
+ my $wait = wait;
+ if ($? == 37*256 && $wait == $zombie && ! $!) {
+ print "ok 12\n";
+ } else {
+ print "not ok 12\n# pid=$wait first=$pid pipe=$pipe zombie=$zombie me=$$ \$?=$? \$!=", $!+0, ":$!\n";
+ }
+}
+
+# Test new semantics for missing command in piped open
+# 19990114 M-J. Dominus mjd@plover.com
+{ local *P;
+ print (((open P, "| " ) ? "not " : ""), "ok 13\n");
+ print (((open P, " |" ) ? "not " : ""), "ok 14\n");
+}
+
+# check that status is unaffected by implicit close
+{
+ local(*NIL);
+ open NIL, '|exit 23;' or die "fork failed: $!";
+ $? = 42;
+ # NIL implicitly closed here
+}
+if ($? != 42) {
+ print "# status $?, expected 42\nnot ";
+}
+print "ok 15\n";
+$? = 0;
+
+# check that child is reaped if the piped program can't be executed
+{
+ open NIL, '/no_such_process |';
+ close NIL;
+
+ my $child = 0;
+ eval {
+ local $SIG{ALRM} = sub { die; };
+ alarm 2;
+ $child = wait;
+ alarm 0;
+ };
+
+ print "not " if $child != -1;
+ print "ok 16\n";
+}
projects / p5sagit/p5-mst-13.2.git / blobdiff