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sys/compat/linux/linux_futex.c
| Show First 20 Lines • Show All 983 Lines • ▼ Show 20 Lines | |||||
| static int | static int | ||||
| handle_futex_death(struct thread *td, struct linux_emuldata *em, uint32_t *uaddr, | handle_futex_death(struct thread *td, struct linux_emuldata *em, uint32_t *uaddr, | ||||
| unsigned int pi) | unsigned int pi) | ||||
| { | { | ||||
| uint32_t uval, nval, mval; | uint32_t uval, nval, mval; | ||||
| int error; | int error; | ||||
| /* Check that futex address is a 32bit aligned. */ | |||||
| if (!__is_aligned(uaddr, sizeof(uint32_t))) | |||||
| return (EINVAL); | |||||
| retry: | retry: | ||||
| error = fueword32(uaddr, &uval); | error = fueword32(uaddr, &uval); | ||||
| if (error != 0) | if (error != 0) | ||||
| return (EFAULT); | return (EFAULT); | ||||
| if ((uval & FUTEX_TID_MASK) == em->em_tid) { | if ((uval & FUTEX_TID_MASK) == em->em_tid) { | ||||
| mval = (uval & FUTEX_WAITERS) | FUTEX_OWNER_DIED; | mval = (uval & FUTEX_WAITERS) | FUTEX_OWNER_DIED; | ||||
| error = casueword32(uaddr, uval, &nval, mval); | error = casueword32(uaddr, uval, &nval, mval); | ||||
| if (error == -1) | if (error == -1) | ||||
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