Does anyone know how to write a program which can change its user privileges on runtime? Like the suexec wrapper of apache?
Thanks for help...
Mailing lists / fpc-pascal / 2006-08
su (switch user) application
6 messages · 2 people · –
- Johannes Nohl 3
- Michael Van Canneyt 3
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Johannes Nohl wroteDoes anyone know how to write a program which can change its user privileges on runtime? Like the suexec wrapper of apache? Thanks for help...
This is not possible unless it runs as root.
(which can be forced by setting the executable file setuid root)
In that case you can use the fpSetUID call.
This call can be used only once.
Michael.
Hello!
In that case you can use the fpSetUID call. This call can be used only once.
Thanks for your help. But I never saw this function. Can you tell me which unit it is in?
Johannes
Johannes Nohl wrote 7 lines
Hello!
> In that case you can use the fpSetUID call.
> This call can be used only once.
Thanks for your help. But I never saw this function. Can you tell me
which unit it is in?
Baseunix.
See the documentation:
http://www.freepascal.org/docs-html/rtl/baseunix/fpsetuid.html
Michael.
Baseunix.
Great! I found it. Is there a Windows-way, too? Something like basewindows? Thanks...
Johannes Nohl wrote> Baseunix. Great! I found it. Is there a Windows-way, too? Something like basewindows? Thanks...
As far as I know, there is no way to change the user-id of a running process. It is possible to start a process with a different set of credentials; This mechanism (CreateProcessEx or CreateProcess or so) could be used to start the same process once more with the desired credentials.
Michael.