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Matheus
33 lines
481 B
C
33 lines
481 B
C
#include <kernel/vmm.h>
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#include <kernel/syscalls.h>
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#include <arch/cls.h>
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syscallret syscall_munmap(void* addr, size_t length){
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syscallret retv;
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retv.ret = -1;
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if(length == 0 || length % PAGE_SIZE > 0){
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retv.errno = EINVAL;
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return retv;
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}
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if(addr > USER_SPACE_END){
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retv.errno = EFAULT;
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return retv;
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}
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bool res = vmm_unmap(addr, length / PAGE_SIZE);
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retv.ret = 0;
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retv.errno = 0;
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if(!res){
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retv.errno = ENOMEM;
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retv.ret = -1;
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}
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return retv;
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}
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