32 vs 64 bit SYSDIR - need some help/explanation

Brummelchen · 3rd June 2008, 12:32

myself actually works on 32bit - so all tools are working with $sysdir.

But i am not sure about 64bit.

is it "\system64" instead "\system32" or "\sysWOW64" found here?
http://forums.winamp.com/showthread....hreadid=269506

i write on a portable defragger which is available as x86 and x64.

contains $sysdir the correct path for both?

how to determine 32 or 64 bit?

WOW64???
http://forums.winamp.com/showthread....hreadid=237297

Application is for WinXP and Vista.

thx

PS registry in the work too, is this needed?
http://forums.winamp.com/showthread....hreadid=271710

kichik · 7th June 2008, 09:12

system32 is for 64-bit files and syswow64 is for 32-bit files. $SYSDIR points to them both and where it actually writes is affected by file-system redirection. x64.nsh contains macros to handle the redirection.

Brummelchen · 7th June 2008, 20:25

i assume that i have to point to syswow64 (redirection off).
thx

kichik · 8th June 2008, 01:07

That'd be $SYSDIR with redirection on. With redirection turned on (the default), files written to system32 are actually written to syswow64.

Spilly · 7th August 2008, 21:55

This presents a problem when using $SYSDIR for file paths, like in shortcut creation.

Changing the redirection has no effect on the SYSDIR var, it's always "$WINDIR\system32", but if you install a 32-bit file in SysWOW64:

EnableX64FSRedirection
SetoutPath $SYSDIR
File 32bit.dll
CreateShortcut "$SMPROGRAMS\32bit.lnk" "$SYSDIR\32bit.dll"

the shortcut will be broken. Since you can't modify the $SYSDIR variable, it has become unusable for all binaries stored in SysWOW64.

Animaether · 10th February 2010, 19:34

Linking this thread to:
http://forums.winamp.com/showthread.php?postid=2607742
Forums > Developer Center > NSIS Discussion > Copying 64-bit DLL to SYSDIR on W7-64

Edit: not related to your shortcut issue, I'm afraid - just noting that thread as this is one of the first ones to pop up in google, and that thread has some updated information on disabling filesystem redirection currently not yet implemented in the x64.nsh header file.

3rd June 2008, 12:32	#1
Brummelchen Major Dude Join Date: May 2003 Posts: 681	32 vs 64 bit SYSDIR - need some help/explanation myself actually works on 32bit - so all tools are working with $sysdir. But i am not sure about 64bit. is it "\system64" instead "\system32" or "\sysWOW64" found here? http://forums.winamp.com/showthread....hreadid=269506 i write on a portable defragger which is available as x86 and x64. contains $sysdir the correct path for both? how to determine 32 or 64 bit? WOW64??? http://forums.winamp.com/showthread....hreadid=237297 Application is for WinXP and Vista. thx PS registry in the work too, is this needed? http://forums.winamp.com/showthread....hreadid=271710 Greets, Brummelchen

7th June 2008, 09:12	#2
kichik M.I.A. [NSIS Dev, Mod] Join Date: Oct 2001 Location: Israel Posts: 11,343	system32 is for 64-bit files and syswow64 is for 32-bit files. $SYSDIR points to them both and where it actually writes is affected by file-system redirection. x64.nsh contains macros to handle the redirection. NSIS FAQ \| NSIS Home Page \| Donate $ "I hear and I forget. I see and I remember. I do and I understand." -- Confucius

7th June 2008, 20:25	#3
Brummelchen Major Dude Join Date: May 2003 Posts: 681	i assume that i have to point to syswow64 (redirection off). thx Greets, Brummelchen

8th June 2008, 01:07	#4
kichik M.I.A. [NSIS Dev, Mod] Join Date: Oct 2001 Location: Israel Posts: 11,343	That'd be $SYSDIR with redirection on. With redirection turned on (the default), files written to system32 are actually written to syswow64. NSIS FAQ \| NSIS Home Page \| Donate $ "I hear and I forget. I see and I remember. I do and I understand." -- Confucius

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7th August 2008, 21:55	#5
Spilly Junior Member Join Date: Aug 2007 Posts: 46	This presents a problem when using $SYSDIR for file paths, like in shortcut creation. Changing the redirection has no effect on the SYSDIR var, it's always "$WINDIR\system32", but if you install a 32-bit file in SysWOW64: EnableX64FSRedirection SetoutPath $SYSDIR File 32bit.dll CreateShortcut "$SMPROGRAMS\32bit.lnk" "$SYSDIR\32bit.dll" the shortcut will be broken. Since you can't modify the $SYSDIR variable, it has become unusable for all binaries stored in SysWOW64.

10th February 2010, 19:34	#6
Animaether Major Dude Join Date: Jun 2001 Posts: 1,173	Linking this thread to: http://forums.winamp.com/showthread.php?postid=2607742 Forums > Developer Center > NSIS Discussion > Copying 64-bit DLL to SYSDIR on W7-64 Edit: not related to your shortcut issue, I'm afraid - just noting that thread as this is one of the first ones to pop up in google, and that thread has some updated information on disabling filesystem redirection currently not yet implemented in the x64.nsh header file.