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kernel: usercopy functions

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Matheus
2024-06-09 19:31:26 -03:00
parent 429f56aced
commit 50b4b45d00
53 changed files with 712 additions and 260 deletions
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kernel-src/sys/syscalls/futex.c
+5 -2
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@@ -74,12 +74,14 @@ syscallret_t syscall_futex(context_t *, uint32_t *futexp, int op, uint32_t value
MUTEX_ACQUIRE(&futexmutex, false);
bool doleave = true;
uint32_t word;
__atomic_load(futexp, &word, __ATOMIC_RELAXED);
ret.errno = usercopy_fromuseratomic32(futexp, &word);
if (ret.errno)
goto cleanup;
uint32_t *physical = vmm_getphysical(futexp);
futex_t *futex = getfutex(physical);
bool doleave = true;
switch (op) {
case FUTEX_WAKE:
@@ -161,6 +163,7 @@ syscallret_t syscall_futex(context_t *, uint32_t *futexp, int op, uint32_t value
ret.errno = ENOSYS;
}
cleanup:
if (doleave)
poll_leave(&desc);