>>> Ok send me the example again (I didnt keep it - I should have)
>>> I'll look at it this end
>>
>> #!/bin/sh
>>
>> file1=${1-/mnt/kernel/temp}
>> user=hanneke
>>
>> # Now execute a suid program by some other user.
>> su $user -c date > $file1
>
> What do you expect?
The FSUID is carried with the file descriptor, so that I can freely pass
file descriptors around.
> The file gets opened by the shell here, and gets written to by
> $user. That might fail on NFS, indeed.
>
> Use
> su $user -c "date > $file1"
> or something like that to let $user open the file.
No, because $user may not have permission to open the file.
The file may be mode 600, owned by the original user.
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