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timerfd_create: accept CLOCK_UPTIME/CLOCK_BOOTTIME

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This is a common use case when using timerfd_create to actually use
it with CLOCK_BOOTTIME on linux which is CLOCK_UPTIME for us.

Note that currently on freebsd CLOCK_BOOTTIME is CLOCK_UPTIME, but the
semantic is supposed to be different, this has to be fixed later.

Tested with the fnott notification software

Reviewed by:	des, imp
Differential Revision:	https://reviews.freebsd.org/D44253
This commit is contained in:
Baptiste Daroussin 2024-03-06 15:11:32 +01:00
parent 32b8aac6f9
commit cf742faa39
1 changed files with 12 additions and 1 deletions
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13
sys/kern/sys_timerfd.c
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@ -26,6 +26,7 @@
* SUCH DAMAGE.
*/
#include <sys/_clock_id.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/callout.h>
@ -432,8 +433,18 @@ kern_timerfd_create(struct thread *td, int clockid, int flags)
AUDIT_ARG_VALUE(clockid);
AUDIT_ARG_FFLAGS(flags);
if (clockid != CLOCK_REALTIME && clockid != CLOCK_MONOTONIC)
switch (clockid) {
case CLOCK_REALTIME:
/* FALLTHROUGH */
case CLOCK_MONOTONIC:
/* FALLTHROUGH */
case CLOCK_UPTIME:
/* FALLTHROUGH */
case CLOCK_BOOTTIME:
break;
default:
return (EINVAL);
}
if ((flags & ~(TFD_CLOEXEC | TFD_NONBLOCK)) != 0)
return (EINVAL);