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tmpfs: mmap and munmap

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Matheus
2023-05-06 17:51:10 -03:00
parent a1919e1d36
commit 87313086a4
2 changed files with 58 additions and 2 deletions
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kernel-src/include/kernel/vmm.h
+13
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@@ -3,6 +3,7 @@
#include <arch/mmu.h>
#include <spinlock.h>
#include <kernel/vfs.h>
#define VMM_FLAGS_PAGESIZE 1
#define VMM_FLAGS_ALLOCATE 2
@@ -57,6 +58,18 @@ typedef struct {
extern vmmcontext_t vmm_kernelctx;
static inline mmuflags_t vnodeflagstommuflags(int flags) {
mmuflags_t mmuflags = 0;
if (flags & V_FFLAGS_READ)
mmuflags |= ARCH_MMU_FLAGS_READ;
if (flags & V_FFLAGS_WRITE)
mmuflags |= ARCH_MMU_FLAGS_WRITE;
if ((flags & V_FFLAGS_EXEC) == 0)
mmuflags |= ARCH_MMU_FLAGS_NOEXEC;
return mmuflags;
}
void *vmm_map(void *addr, size_t size, int flags, mmuflags_t mmuflags, void *private);
void vmm_unmap(void *addr, size_t size, int flags);
bool vmm_pagefault(void *addr, bool user, int actions);