mirror of
https://github.com/Mathewnd/Astral.git
synced 2026-10-27 20:58:22 +00:00
Matheus
28 lines
442 B
C
28 lines
442 B
C
#include <kernel/syscalls.h>
|
|
#include <kernel/vmm.h>
|
|
#include <errno.h>
|
|
|
|
syscallret_t syscall_munmap(context_t *ctx, void *addr, size_t length) {
|
|
syscallret_t ret = {
|
|
.ret = -1,
|
|
.errno = 0
|
|
};
|
|
|
|
if (addr > USERSPACE_END) {
|
|
ret.errno = EFAULT;
|
|
return ret;
|
|
}
|
|
|
|
if (length == 0 || length % PAGE_SIZE > 0) {
|
|
ret.errno = EINVAL;
|
|
return ret;
|
|
}
|
|
|
|
vmm_unmap(addr, length / PAGE_SIZE, 0);
|
|
|
|
ret.ret = 0;
|
|
ret.errno = 0;
|
|
|
|
return ret;
|
|
}
|