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Matheus
28 lines
437 B
C
28 lines
437 B
C
#include <kernel/syscalls.h>
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#include <kernel/mm.h>
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#include <errno.h>
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syscallret_t syscall_munmap(context_t *ctx, void *addr, size_t length) {
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syscallret_t ret = {
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.ret = -1,
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.errno = 0
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};
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if (addr > USERSPACE_END) {
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ret.errno = EFAULT;
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return ret;
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}
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if (length == 0 || (uintptr_t)addr % PAGE_SIZE > 0) {
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ret.errno = EINVAL;
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return ret;
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}
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mm_unmap(addr, length, 0);
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ret.ret = 0;
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ret.errno = 0;
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return ret;
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}
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