#include <linux/hrtimer.h>
#include <linux/anon_inodes.h>
#include <linux/timerfd.h>
+#include <linux/syscalls.h>
struct timerfd_ctx {
struct hrtimer tmr;
static ktime_t timerfd_get_remaining(struct timerfd_ctx *ctx)
{
- ktime_t now, remaining;
-
- now = ctx->tmr.base->get_time();
- remaining = ktime_sub(ctx->tmr.expires, now);
+ ktime_t remaining;
+ remaining = hrtimer_expires_remaining(&ctx->tmr);
return remaining.tv64 < 0 ? ktime_set(0, 0): remaining;
}
ctx->ticks = 0;
ctx->tintv = timespec_to_ktime(ktmr->it_interval);
hrtimer_init(&ctx->tmr, ctx->clockid, htmode);
- ctx->tmr.expires = texp;
+ hrtimer_set_expires(&ctx->tmr, texp);
ctx->tmr.function = timerfd_tmrproc;
if (texp.tv64 != 0)
hrtimer_start(&ctx->tmr, texp, htmode);
asmlinkage long sys_timerfd_create(int clockid, int flags)
{
- int error, ufd;
+ int ufd;
struct timerfd_ctx *ctx;
- struct file *file;
- struct inode *inode;
- if (flags)
+ /* Check the TFD_* constants for consistency. */
+ BUILD_BUG_ON(TFD_CLOEXEC != O_CLOEXEC);
+ BUILD_BUG_ON(TFD_NONBLOCK != O_NONBLOCK);
+
+ if (flags & ~(TFD_CLOEXEC | TFD_NONBLOCK))
return -EINVAL;
if (clockid != CLOCK_MONOTONIC &&
clockid != CLOCK_REALTIME)
ctx->clockid = clockid;
hrtimer_init(&ctx->tmr, clockid, HRTIMER_MODE_ABS);
- error = anon_inode_getfd(&ufd, &inode, &file, "[timerfd]",
- &timerfd_fops, ctx);
- if (error) {
+ ufd = anon_inode_getfd("[timerfd]", &timerfd_fops, ctx,
+ flags & (O_CLOEXEC | O_NONBLOCK));
+ if (ufd < 0)
kfree(ctx);
- return error;
- }
return ufd;
}