Copy task of Ant sets wrong permissions under cygwin

Thread view:

Ronald Fischer - 26 Nov 2003 13:39 GMT

When executing the Ant task

<copy file="source" tofile="target" />

with Ant running under cygwin, and source has permission
0500, the resulting file has permission 0000!!!!!

Reply to this Message

Stefan Bodewig - 27 Nov 2003 09:11 GMT

> When executing the Ant task
>
> <copy file="source" tofile="target" />
>
> with Ant running under cygwin, and source has permission
> 0500, the resulting file has permission 0000!!!!!

Don't blame it on Ant, blame it on Java.

There is no way to access the permissions of a file from within Java (without
falling back to native methods, that is) and no way to change them.

Ant will create plain files while copying and they will get your default
permissions. If they are not correct, use <apply> (or <attrib> in 1.6beta)
to change them afterwards.

Stefan

Reply to this Message

Ronald Fischer - 28 Nov 2003 10:07 GMT

> > When executing the Ant task
> >
[quoted text clipped - 7 lines]
> Ant will create plain files while copying and they will get your default
> permissions.

If it only would!!! My umask displays at

0022

So the resulting files should then have permissions 0640!

> If they are not correct, use <apply>

OK ... this means I should first write a BAT-file, say CHGPROT.BAT,
containing something like

sh -c chmod 0640 %1

and then use it like this:

<apply executable="CHGPROT.BAT" os="???" >
My fileset goes here...
</apply>

But what do I put for the question marks to indicate that the task
should be executed only under cygwin?

Ronald

Reply to this Message

Stefan Bodewig - 01 Dec 2003 09:33 GMT

> > Ant will create plain files while copying and they will get your default
> > permissions.
[quoted text clipped - 4 lines]
>
> So the resulting files should then have permissions 0640!

Your Java VM doesn't know anything about Cygwin - so neither does Ant.
The permissions you see are those that any File created by Java will get.
Sorry.

> > If they are not correct, use <apply>
>
[quoted text clipped - 4 lines]
> But what do I put for the question marks to indicate that the task
> should be executed only under cygwin?

Cygwin is not an OS.

Instead of using <apply>'s os attribute, you better check for some Cygwin
indicator (like the presence of a cygwin.user.home property that gets set
by Ant's wrapper script) with <condition> and put the apply into a <target>
that's guarded by if/unless attributes.

Stefan

Signature

http://stefanbodewig.blogger.de/

Reply to this Message

Copy task of Ant sets wrong permissions under cygwin

Free Magazines