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vmm: file mapping

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Matheus
2023-05-06 19:28:09 -03:00
parent 8ccd0bebcb
commit 46bbf60ce8
2 changed files with 72 additions and 14 deletions
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kernel-src/include/kernel/vmm.h
+23 -1
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@@ -19,6 +19,11 @@
#define VMM_ACTION_WRITE 2
#define VMM_ACTION_EXEC 4
typedef struct {
vnode_t *node;
uintmax_t offset;
} vmmfiledesc_t;
struct vmmcache_t;
typedef struct vmmrange_t{
struct vmmrange_t *next;
@@ -27,7 +32,12 @@ typedef struct vmmrange_t{
size_t size;
int flags;
mmuflags_t mmuflags;
void *private;
union {
struct {
vnode_t *vnode;
size_t offset;
};
};
} vmmrange_t;
typedef struct {
@@ -70,6 +80,18 @@ static inline mmuflags_t vnodeflagstommuflags(int flags) {
return mmuflags;
}
static inline int mmuflagstovnodeflags(mmuflags_t mmuflags) {
int flags = 0;
if (mmuflags & ARCH_MMU_FLAGS_READ)
flags |= V_FFLAGS_READ;
if (mmuflags & ARCH_MMU_FLAGS_WRITE)
flags |= V_FFLAGS_READ;
if ((mmuflags & ARCH_MMU_FLAGS_NOEXEC) == 0)
flags |= V_FFLAGS_EXEC;
return flags;
}
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);