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dd kern_getpriority(), make Linuxulator use it.

Browse Source 
Reviewed by:	kib, emaste
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D22842
This commit is contained in:
Edward Tomasz Napierala 2020-01-12 14:25:44 +00:00
parent 7a0ef283e6
commit ca603bb1ee
3 changed files with 17 additions and 12 deletions
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5
sys/compat/linux/linux_misc.c
View File

@ -1613,12 +1613,9 @@ linux_nosys(struct thread *td, struct nosys_args *ignore)
int
linux_getpriority(struct thread *td, struct linux_getpriority_args *args)
{
struct getpriority_args bsd_args;
int error;
bsd_args.which = args->which;
bsd_args.who = args->who;
error = sys_getpriority(td, &bsd_args);
error = kern_getpriority(td, args->which, args->who);
td->td_retval[0] = 20 - td->td_retval[0];
return (error);
}

23
sys/kern/kern_resource.c
View File

@ -91,6 +91,13 @@ struct getpriority_args {
#endif
int
sys_getpriority(struct thread *td, struct getpriority_args *uap)
{
return (kern_getpriority(td, uap->which, uap->who));
}
int
kern_getpriority(struct thread *td, int which, int who)
{
struct proc *p;
struct pgrp *pg;
@ -98,13 +105,13 @@ sys_getpriority(struct thread *td, struct getpriority_args *uap)
error = 0;
low = PRIO_MAX + 1;
switch (uap->which) {
switch (which) {
case PRIO_PROCESS:
if (uap->who == 0)
if (who == 0)
low = td->td_proc->p_nice;
else {
p = pfind(uap->who);
p = pfind(who);
if (p == NULL)
break;
if (p_cansee(td, p) == 0)
@ -115,11 +122,11 @@ sys_getpriority(struct thread *td, struct getpriority_args *uap)
case PRIO_PGRP:
sx_slock(&proctree_lock);
if (uap->who == 0) {
if (who == 0) {
pg = td->td_proc->p_pgrp;
PGRP_LOCK(pg);
} else {
pg = pgfind(uap->who);
pg = pgfind(who);
if (pg == NULL) {
sx_sunlock(&proctree_lock);
break;
@ -139,14 +146,14 @@ sys_getpriority(struct thread *td, struct getpriority_args *uap)
break;
case PRIO_USER:
if (uap->who == 0)
uap->who = td->td_ucred->cr_uid;
if (who == 0)
who = td->td_ucred->cr_uid;
sx_slock(&allproc_lock);
FOREACH_PROC_IN_SYSTEM(p) {
PROC_LOCK(p);
if (p->p_state == PRS_NORMAL &&
p_cansee(td, p) == 0 &&
p->p_ucred->cr_uid == uap->who) {
p->p_ucred->cr_uid == who) {
if (p->p_nice < low)
low = p->p_nice;
}

1
sys/sys/syscallsubr.h
View File

@ -141,6 +141,7 @@ int kern_getitimer(struct thread *, u_int, struct itimerval *);
int kern_getppid(struct thread *);
int kern_getpeername(struct thread *td, int fd, struct sockaddr **sa,
socklen_t *alen);
int kern_getpriority(struct thread *td, int which, int who);
int kern_getrusage(struct thread *td, int who, struct rusage *rup);
int kern_getsid(struct thread *td, pid_t pid);
int kern_getsockname(struct thread *td, int fd, struct sockaddr **sa,