zero: finish implementation
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@ -1,27 +1,41 @@
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#include "alloc.h"
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#include "klibc.h"
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#include "zero.h"
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#include "alloc.h"
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#include "kernel.h"
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#include "klibc.h"
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struct zeroMappedEntry {
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int refCnt;
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int refCnt;
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};
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static int zeroOpen(struct uAddrVirtualReg *vreg)
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{
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(void)vreg;
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return 0;
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struct zeroMappedEntry *ent = (struct zeroMappedEntry *)vreg->res->customData;
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ent->refCnt++;
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return 0;
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}
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static int zeroClose(struct uAddrVirtualReg *vreg)
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{
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(void)vreg;
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return 0;
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struct zeroMappedEntry *ent = (struct zeroMappedEntry *)vreg->res->customData;
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ent->refCnt--;
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return 0;
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}
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static int zeroNoPage(struct uAddrVirtualReg *vreg, uaddr_t addr, int right)
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{
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(void)vreg;
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(void)addr;
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(void)right;
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return 0;
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(void)vreg;
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int ret = 0;
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paddr_t ppage = allocPhyPage(1);
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ret = pageMap(ALIGN_DOWN(addr, PAGE_SIZE), ppage, right | PAGING_MEM_USER) ;
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unrefPhyPage(ppage);
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if (ret) {
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return ret;
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}
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memset((void *)ALIGN_DOWN(addr, PAGE_SIZE), 0, PAGE_SIZE);
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return ret;
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}
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static struct mappedRessourceOps zeroOps = {
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