Posix capabilities
See my "capwrap" module:
http://arctrix.com/nas/linux/capwrap.tar.gz
To allow SCHED_FIFO you would need to give the process the CAP_SYS_NICE capability. CAP_SYS_NICE is bit 23 (800000 in hex). Create a text file with the following line and make it root suid:
&/usr/bin/someprogram 800000
If the capwrap module is loaded the kernel will recognize the file as a "capability wrapper" and grant the specified capabilities to the executable while running with the uid of the current user.
The capwrap module isn't fancy but is works and is simple. It doesn't require any special filesystem. Since I'm no kernel hacker I don't know if it's suitable for inclusion in the main tree. I would appreciate any comments people have regarding it.
Neil
Hi!
Quoted 10 lines
See my "capwrap" module:
http://arctrix.com/nas/linux/capwrap.tar.gz
To allow
SCHED_FIFOyou would need to give the process theCAP_SYS_NICEcapability.CAP_SYS_NICEis bit 23 (800000 in hex). Create a text file with the following line and make it root suid:&/usr/bin/someprogram 800000
Quoted 8 lines
If the capwrap module is loaded the kernel will recognize the file as a "capability wrapper" and grant the specified capabilities to the executable while running with the uid of the current user.
The capwrap module isn't fancy but is works and is simple. It doesn't require any special filesystem. Since I'm no kernel hacker I don't know if it's suitable for inclusion in the main tree. I would appreciate any comments people have regarding it.
I did similar thing using elf .note section... But this seems elegant too. Perhaps you want to push it for inclusion?
Pavel
Signature · 2 lines
Worst form of spam? Adding advertisment signatures ala sourceforge.net. What goes next? Inserting advertisment *into* email?