Hi,
We use fedora at work and are trying to port our driver from F7 to F9.
I am acting as gopher for our system architect so please be liberal with
any commentary. I won't be able to post his feedback to any
comments/questions (as necc.) until Tuesday evening.
I believe he wants our applications (running as non-root user) to be
able to open his driver, and the driver to be able to run at real-time
priority. We did this in F7 without any apparent issues.
Any help, comments, suggestions are greatly appreciated.
---
John
code and issues :
struct sched_param param = {70};
kernel_cap_t effective, inheritable, permitted, all;
cap_set_full(all); // be sure we have enough permissions to call
// sched_setscheduler.
// probably only need CAP_SYS_NICE, but let's be
// "(un)safe"
// save old permissions
cap_capget(current,&effective, &inheritable, &permitted);
// setup permissions to do this
cap_capset_set(current,&all, &all, &all);
// setup realtime priority
ret=sched_setscheduler(current,SCHED_RR,¶m);
// restore permissions
cap_capset_set(current,&effective, &inheritable, &permitted);
used to be able to do this in f7 / 2.6.23 kernel, now we get:
WARNING: "cap_capset_set" [/usr/CSM/src/ONI/oni_driver/oni.ko] undefined!
WARNING: "cap_capget" [/usr/CSM/src/ONI/oni_driver/oni.ko] undefined!
when building and of course:
ion: Unknown symbol cap_capget
ion: Unknown symbol cap_capset_set
when insmod'ing under f9 / 2.6.25
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