ID: 35849
Updated by: nlopess@php.net
Reported By: sqchen at citiz dot net
-Status: Feedback
+Status: Open
Bug Type: Unknown/Other Function
Operating System: redhat 7.3
PHP Version: 5.1.1
New Comment:
I can see two bugs in this report:
* mmap()'ed fds aren't seeked() to update the position
* the length is a size_t, where it should be a ssize_t, because
PHP_STREAM_COPY_ALL is defined to -1
my patch: http://mega.ist.utl.pt/~ncpl/php_stream_mmap.txt
it makes all negative values to read all the file (to be consistent
with non-mmap'ed fds).
I can also see some long/size_t/ssize_t mixes, which can be problematic
in some platforms.
Previous Comments:
------------------------------------------------------------------------
[2005-12-30 10:25:03] tony2001@php.net
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php
If you can provide more information, feel free to add it
to this bug and change the status back to "Open".
Thank you for your interest in PHP.
------------------------------------------------------------------------
[2005-12-30 08:25:20] sqchen at citiz dot net
SORRY, I have make a mistake on the code above, Below is the right
code
Description:
------------
stream_copy_to_stream() do strange behavior when the maxlength
parameter
is negative, see the following codes:
Reproduce code:
---------------
<?php
$src = fopen("1.txt", "r"); //"hell, world" in "1.txt"
$dest1 = fopen("des1.txt", "w");
$dest2 = fopen("des2.txt", "w");
/*----seg1------*/
stream_copy_to_stream($src, $des1, -2);
readfile("des1.txt"); //hello, world
stream_copy_to_stream($src, $des2);
readfile("des2.txt"); //nothing? why?
/* please compare it with seg2*/
/*----seg2-------*/
stream_copy_to_stream($src, $des1, 2);
readfile("des1.txt"); //he
stream_copy_to_stream($src, $des2);
readfile("des2.txt"); //hello, world
?>
------------------------------------------------------------------------
[2005-12-30 07:43:17] sqchen at citiz dot net
Description:
------------
stream_copy_to_stream() do strange behavior when the maxlength
parameter is negative, see the following codes:
Reproduce code:
---------------
<?php
$src = fopen("1.txt", "r"); //"hell, world" in "1.txt"
$dest1 = fopen("des1.txt", "w");
$dest2 = fopen("des2.txt", "w");
/*----seg1------*/
stream_copy_to_stream($src, $des1, -2);
readfile("des1.txt"); //hello, world
stream_copy_to_stream($src, $des1);
readfile("des2.txt"); //nothing? why?
/* please compare it with seg2*/
/*----seg2-------*/
stream_copy_to_stream($src, $des1, 2);
readfile("des1.txt"); //he
stream_copy_to_stream($src, $des1);
readfile("des2.txt"); //hello, world
?>
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=35849&edit=1