diff options
Diffstat (limited to 'sys/kern/kern_resource.c')
| -rw-r--r-- | sys/kern/kern_resource.c | 60 |
1 files changed, 59 insertions, 1 deletions
diff --git a/sys/kern/kern_resource.c b/sys/kern/kern_resource.c index a6b11c0..06d749c 100644 --- a/sys/kern/kern_resource.c +++ b/sys/kern/kern_resource.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)kern_resource.c 8.5 (Berkeley) 1/21/94 - * $Id$ + * $Id: kern_resource.c,v 1.3 1994/08/02 07:42:10 davidg Exp $ */ #include <sys/param.h> @@ -193,6 +193,64 @@ donice(curp, chgp, n) return (0); } +/* rtprio system call */ +struct rtprio_args { + int who; + pid_t rtprio; +}; + +/* + * Set realtime priority + */ + +/* ARGSUSED */ +int +rtprio(curp, uap, retval) + struct proc *curp; + register struct rtprio_args *uap; + int *retval; +{ + register struct proc *p; + register int n = uap->rtprio; + register struct pcred *pcred = curp->p_cred; + + if (uap->who == 0) + p = curp; + else + p = pfind(uap->who); + + if (p == 0) + return (ESRCH); + + if (n == RTPRIO_NOCHG) { + *retval = (int)p->p_rtprio; + return(0); } + + if (pcred->pc_ucred->cr_uid && pcred->p_ruid && + pcred->pc_ucred->cr_uid != p->p_ucred->cr_uid && + pcred->p_ruid != p->p_ucred->cr_uid) + return (EPERM); + + if (n == RTPRIO_RTOFF) { + if(suser(pcred->pc_ucred, &curp->p_acflag)&& !uap->who) + return (EPERM); + p->p_rtprio = RTPRIO_RTOFF; + *retval = RTPRIO_RTOFF; + return (0); } + + if (n > RTPRIO_MAX) + return (EINVAL); + if (n < RTPRIO_MIN) + return (EINVAL); + if (suser(pcred->pc_ucred, &curp->p_acflag)) + return (EPERM); + + p->p_rtprio = n; + + *retval = (int)p->p_rtprio; + return (0); +}; + #if defined(COMPAT_43) || defined(COMPAT_SUNOS) struct setrlimit_args { u_int which; |
