From: exe at travian dot org
Operating system: GNU/Linux Kernel 2.6.18
PHP version: 5.2.5
PHP Bug Type: Filesystem function related
Bug description: Output after stdout/stderr cause immediate exit
Description:
------------
If STDOUT and/or STDERR are closed, output by the php script cause the
interpreter to exit immediately.
According to strace output, php tries to write to the closed STDOUT file
handle, causing a "Bad file descriptor" error and exit of the interpreter:
[...]
close(1) = 0
[...]
write(1, "foo", 3) = -1 EBADF (Bad file descriptor)
close(0) = 0
close(2) = 0
[...]
exit_group(0) = ?
Process 19177 detached
Reproduce code:
---------------
<?php
fclose(STDOUT);
print "foo";
sleep(10);
?>
Expected result:
----------------
No output, php sleeping for 10 seconds.
Actual result:
--------------
php exits immediately, strace shows an "Bad file descriptor" on the
write() try to STDOUT:
[...]
read(3, "<?php\nfclose(STDOUT);\n\nprint \"fo"..., 8192) = 51
read(3, "", 4096) = 0
read(3, "", 8192) = 0
close(3) = 0
munmap(0x2b1dce200000, 4096) = 0
close(1) = 0
munmap(0x2b1dce202000, 4096) = 0
write(1, "foo", 3) = -1 EBADF (Bad file descriptor)
close(2) = 0
close(0) = 0
munmap(0x2b1dce201000, 4096) = 0
munmap(0x2b1dce1bf000, 266240) = 0
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x2b1dce1bf000
setitimer(ITIMER_PROF, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
munmap(0x2b1dce1bf000, 266240) = 0
brk(0xd36000) = 0xd36000
exit_group(0) = ?
Process 19196 detached
--
Edit bug report at http://bugs.php.net/?id=44217&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=44217&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=44217&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=44217&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=44217&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=44217&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=44217&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=44217&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=44217&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=44217&r=support
Expected behavior: http://bugs.php.net/fix.php?id=44217&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=44217&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=44217&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=44217&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=44217&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=44217&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=44217&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=44217&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=44217&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=44217&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=44217&r=mysqlcfg
