Making a disk image that opens a Finder window on mount.

jutus

Anyone know how to make a .dmg image file in OS X that automatically opens the volume when you mount it? Apple's MacOS X update images do this, but I can't figure out how they do it for the life of me.



In OS 9 it was straightforward since the window formatting was preserved on the image, but not so in OS X. I even tried making an image with open window on OS 9 and bringing it over to X with no success.

ghost_user_name

I don't think that is possible in OSX.

jutus

I figured it out. It involves modifying the HFS+ volume header bits.



It most definitely cannot be done with conventional OS X tools.

zo

care to share?

jutus

Sure thing!



Here's the code:

[code]



/*

* Copyright (c) 2001 Apple Computer, Inc. All rights reserved.

*

* @APPLE_LICENSE_HEADER_START@

*

* The contents of this file constitute Original Code as defined in and

* are subject to the Apple Public Source License Version 1.1 (the

* "License"). You may not use this file except in compliance with the

* License. Please obtain a copy of the License at

* <a href="http://www.apple.com/publicsource"; target="_blank">http://www.apple.com/publicsource</a>; and read it before using this file.

*

* This Original Code and all software distributed under the License are

* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER

* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,

* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the

* License for the specific language governing rights and limitations

* under the License.

*

* @APPLE_LICENSE_HEADER_END@

*/

/*

* Shantonu Sen &lt;[email protected]&gt;

* openUp.c - program to set the "first-open-window" field of a volume

*

* Get the directory ID for the first argument, and set it as word 2

* of the Finder Info fields for the volume it lives on

*

* cc -o openUp openUp.c

* Usage: openUp /Volumes/Foo/OpenMe/

*

*/



#include &lt;stdio.h&gt;

#include &lt;unistd.h&gt;

#include &lt;sys/attr.h&gt;

#include &lt;sys/stat.h&gt;

#include &lt;sys/mount.h&gt;



struct directoryinfo {

unsigned long length;

u_int32_t dirid;

};



struct volumeinfo {

unsigned long length;

u_int32_t finderinfo[8];

};





int main(int argc, char *argv[]) {



char *path = NULL;

struct attrlist alist;

struct directoryinfo dirinfo;

struct volumeinfo volinfo;

struct statfs sfs;



path = argv[1];



bzero(&alist, sizeof(alist));

alist.bitmapcount = 5;

alist.commonattr = ATTR_CMN_OBJID;



getattrlist(path, &alist, &dirinfo, sizeof(dirinfo), 0);



printf("directory id: %lu\

", dirinfo.dirid);



statfs(path, &sfs);



printf("mountpoint: %s\

", sfs.f_mntonname);



alist.commonattr = ATTR_CMN_FNDRINFO;

alist.volattr = ATTR_VOL_INFO;



getattrlist(sfs.f_mntonname, &alist, &volinfo, sizeof(volinfo), 0);

volinfo.finderinfo[2] = dirinfo.dirid;

setattrlist(sfs.f_mntonname, &alist, volinfo.finderinfo,

sizeof(volinfo.finderinfo), 0);



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