id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
12866	tmpfile() may use non-writable directory causing upgrades to fail	dd32	dd32	"According to ocean90's investigation of a core upgrade issue in #8668, and verified by php.net, tmpfile() may use a temporary directory which is not writable.

The temporary directory may be non-writable due to ACL's, or due to open_basedir restrictions - Both bad server configurations.

Example error:
{{{
Warning: tmpfile() [function.tmpfile]: open_basedir restriction in effect.
File(/tmp) is not within the allowed path(s): (
/var/www/web39/html/:
/var/www/web39/phptmp/:/var/www/web39/files/:
/var/www/web39/atd/
)in
/var/www/web39/html/blog/wp-admin/includes/class-wp-filesystem-ftpext.php
on line 116
}}}

commit coming up replaced tmpfile() with a wp_tempname()+fopen() call.

Commit also adds static caching to get_temp_dir() as it may be called rather often with this cod branch. In addition to that, to protect against more bad server environments, the temporary directory is checked to be writable in all given branches."	defect (bug)	closed	normal	3.0	Upgrade/Install		normal	fixed	has-patch