1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
#!./perl
# $RCSfile: pipe.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:31 $
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require Config; import Config;
unless ($Config{'d_fork'}) {
print "1..0\n";
exit 0;
}
}
$| = 1;
print "1..10\n";
open(PIPE, "|-") || (exec 'tr', 'YX', 'ko');
print PIPE "Xk 1\n";
print PIPE "oY 2\n";
close PIPE;
if (open(PIPE, "-|")) {
while(<PIPE>) {
s/^not //;
print;
}
}
else {
print STDOUT "not ok 3\n";
exec 'echo', 'not ok 4';
}
pipe(READER,WRITER) || die "Can't open pipe";
if ($pid = fork) {
close WRITER;
while(<READER>) {
s/^not //;
y/A-Z/a-z/;
print;
}
}
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';
}
pipe(READER,WRITER) || die "Can't open pipe";
close READER;
$SIG{'PIPE'} = 'broken_pipe';
sub broken_pipe {
print "ok 7\n";
}
print WRITER "not ok 7\n";
close WRITER;
print "ok 8\n";
# VMS doesn't like spawning subprocesses that are still connected to
# STDOUT. Someone should modify tests #9 and #10 to work with VMS.
if ($^O eq 'VMS') {
print "ok 9\n";
print "ok 10\n";
exit;
}
if ($Config{d_sfio} || $^O eq machten) {
# 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.
print "ok 9\n";
}
else {
local $SIG{PIPE} = 'IGNORE';
open NIL, '|true' or die "open failed: $!";
sleep 2;
print NIL 'foo' or die "print failed: $!";
if (close NIL) {
print "not ok 9\n";
}
else {
print "ok 9\n";
}
}
# 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";
}
|
