#44217 [Fbk]: Output after stdout/stderr closed cause immediate exit

ID: 44217 Updated by: jani@php.net Reported By: exe at travian dot org Status: Feedback Bug Type: Filesystem function related Operating System: GNU/Linux Kernel 2.6.18 PHP Version: 5.2.5 New Comment: Another bug #44218 describes some more expected behaviour caused by closing the input/output streams. NOTE: Correct manual page: http://www.php.net/manual/en/wrappers.php.php Previous Comments: ------------------------------------------------------------------------ [2008-02-24 00:34:08] jani@php.net That's quite expected since you're still trying to output to STDOUT. Why do you want to close STDOUT anyway? See also: http://www.php.net/wrappers.php ------------------------------------------------------------------------ [2008-02-22 17:32:15] exe at travian dot org 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 this bug report at http://bugs.php.net/?id=44217&edit=1