From: ntang at communityconnect dot com
Operating system: Red Hat Enterprise 5.1
PHP version: 5.2.6
PHP Bug Type: Filesystem function related
Bug description: 64 bit inode stat fails (ex: recursive mkdir)
Description:
------------
Using a filesystem w/ 64 bit inodes fails on Linux. Functions that
require stat'ing files (such as a recursive mkdir) fail - even when stat64
returns a 0 it overflows and sees it as non-existant... the end result is
that if directory /x/y/z exists on a filesystem w/ 64 bit inodes, and you
do a recursive mkdir of /x/y/z/a/b/c, c b and a will all return "does not
exist" properly, but then it will keep going past z and y and try to create
x (at which point it returns an error saying that x already exists).
What we found from testing and then googling, is that after you include
<stdio.h>, you need to add this define for 64 bit inodes to be recognized
by the gnu libraries:
#define __USE_FILE_OFFSET64
Here's some c code to test, you can run it with and without the define to
see what happens:
#include <stdio.h>
#define __USE_FILE_OFFSET64
#include <sys/stat.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/statvfs.h>
int main(int argc, char** argv)
{
struct stat buf;
if (stat(argv[1], &buf) != 0)
{
printf("stat failed!\n");
return 2;
}
printf("inode is %llu\n", buf.st_ino);
return 0;
}
Long story short: the define above needs to be baked into PHP anytime it
makes filesystem calls (or at least be added as a flag as a compile-time
option for ./configure).
Reproduce code:
---------------
To test:
#!/usr/local/bin/php
<?php
mkdir('/mnt/test/blarg/bagga/booga/zim/zam/zoo',0755,true);
?>
Expected result:
----------------
It should create /mnt/test/blarg/bagga/booga/zim/zam/zoo.
Actual result:
--------------
It doesn't create the directory. Note that even when stat64 succeeds and
returns 0, it still keeps going.
stat64("/mnt/test/blarg/bagga/booga/zim/zam", 0xbff6f2f0) = -1 ENOENT (No
such file or directory)
write(2, "stat(\"/mnt/test/blarg/bagga/boog"...,
49stat("/mnt/test/blarg/bagga/booga/zim/zam") = -1
) = 49
stat64("/mnt/test/blarg/bagga/booga/zim", 0xbff6f2f0) = -1 ENOENT (No such
file or directory)
write(2, "stat(\"/mnt/test/blarg/bagga/boog"...,
45stat("/mnt/test/blarg/bagga/booga/zim") = -1
) = 45
stat64("/mnt/test/blarg/bagga/booga", 0xbff6f2f0) = -1 ENOENT (No such
file or directory)
write(2, "stat(\"/mnt/test/blarg/bagga/boog"...,
41stat("/mnt/test/blarg/bagga/booga") = -1
) = 41
stat64("/mnt/test/blarg/bagga", 0xbff6f2f0) = -1 ENOENT (No such file or
directory)
write(2, "stat(\"/mnt/test/blarg/bagga\") = "...,
35stat("/mnt/test/blarg/bagga") = -1
) = 35
stat64("/mnt/test/blarg", 0xbff6f2f0) = -1 ENOENT (No such file or
directory)
write(2, "stat(\"/mnt/test/blarg\") = -1\n", 29stat("/mnt/test/blarg") =
-1
) = 29
stat64("/mnt/test", {st_dev=makedev(0, 54), st_ino=4294967298,
st_mode=S_IFDIR|0755, st_nlink=19, st_uid=99, st_gid=98, st_blksize=4096,
st_blocks=8, st_size=4096, st_atime=2008/05/16-18:10:05,
st_mtime=2008/05/16-17:20:29, st_ctime=2008/05/16-17:20:29}) = 0
write(2, "stat(\"/mnt/test\") = -1\n", 23stat("/mnt/test") = -1
) = 23
stat64("/mnt", {st_dev=makedev(8, 7), st_ino=98306, st_mode=S_IFDIR|0755,
st_nlink=5, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=16,
st_size=4096, st_atime=2008/05/16-18:10:03, st_mtime=2008/05/16-16:55:20,
st_ctime=2008/05/16-16:55:20}) = 0
write(2, "stat(\"/mnt\") = 0\n", 17stat("/mnt") = 0
) = 17
mkdir("/mnt/test", 0755) = -1 EEXIST (File exists)
write(1, "\nWarning: mkdir(): File exists i"..., 57
--
Edit bug report at http://bugs.php.net/?id=45040&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=45040&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=45040&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=45040&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=45040&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=45040&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=45040&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=45040&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=45040&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=45040&r=support
Expected behavior: http://bugs.php.net/fix.php?id=45040&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=45040&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=45040&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=45040&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45040&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=45040&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=45040&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=45040&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=45040&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=45040&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=45040&r=mysqlcfg
