/ is writable on mac... leading to lots of awkward msi droppings?

Charles Davis cdavis at mymail.mines.edu
Wed Jan 5 02:18:33 CST 2011

On 1/5/11 12:31 AM, Dan Kegel wrote:
> Quentin Paris informs me that the root directory is
> user-writable on MacOSX (shudder), which means
> our beloved z: mapping leads to lots of garbage
> directories named e.g. /fd91216cc2ce81eb2ce16a058619
> after running msi installers.
Now where would he get that idea from?

chips-computer:~ chip$ uname # show that this is Darwin (Mac OS X)
chips-computer:~ chip$ ls -ld / # show permissions of root directory
drwxr-xr-x  39 root  admin  1394 Nov 15 09:00 /
chips-computer:~ chip$ mkdir /a # try to create something in /
mkdir: /a: Permission denied

At least on my Mac, only root gets to write to /.


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