From a1919e1d365e65063b7968b5b6189a1ea6bc702f Mon Sep 17 00:00:00 2001
From: Matheus <matheusuky@gmail.com>
Date: Sat, 6 May 2023 17:49:50 -0300
Subject: [PATCH] vfs: mmap and munmap

---
 kernel-src/include/kernel/devfs.h | 2 ++
 kernel-src/include/kernel/vfs.h   | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/kernel-src/include/kernel/devfs.h b/kernel-src/include/kernel/devfs.h
index d3de0887..685c657d 100644
--- a/kernel-src/include/kernel/devfs.h
+++ b/kernel-src/include/kernel/devfs.h
@@ -14,6 +14,8 @@ typedef struct {
 	int (*read)(int minor, void *buffer, size_t size, uintmax_t offset, int flags, size_t *readc);
 	int (*write)(int minor, void *buffer, size_t size, uintmax_t offset, int flags, size_t *writec);
 	int (*poll)(int minor, int events);
+	int (*mmap)(int minor, void *addr, uintmax_t offset, int flags);
+	int (*munmap)(int minor, void *addr, uintmax_t offset, int flags);
 } devops_t;
 
 typedef struct devnode_t {
diff --git a/kernel-src/include/kernel/vfs.h b/kernel-src/include/kernel/vfs.h
index 859af2ad..80171f8e 100644
--- a/kernel-src/include/kernel/vfs.h
+++ b/kernel-src/include/kernel/vfs.h
@@ -51,6 +51,8 @@ typedef struct vfs_t {
 #define V_FFLAGS_READ 1
 #define V_FFLAGS_WRITE 2
 #define V_FFLAGS_NONBLOCKING 4
+#define V_FFLAGS_SHARED 8
+#define V_FFLAGS_EXEC 16
 
 typedef struct vnode_t {
 	struct vops_t *ops;
@@ -85,6 +87,8 @@ typedef struct vops_t {
 	int (*symlink)(vnode_t *parent, char *name, vattr_t *attr, char *path, cred_t *cred);
 	int (*readlink)(vnode_t *parent, char **link, cred_t *cred);
 	int (*inactive)(vnode_t *node);
+	int (*mmap)(vnode_t *node, void *addr, uintmax_t offset, int flags, cred_t *cred);
+	int (*munmap)(vnode_t *node, void *addr, uintmax_t offset, int flags, cred_t *cred);
 } vops_t;
 
 #define VFS_MOUNT(vfs, mp, b, d) (vfs)->ops->mount(vfs, mp, b, d)
@@ -109,6 +113,8 @@ typedef struct vops_t {
 #define VOP_LINK(v, d, n, c) (v)->ops->link(v, d, n, c)
 #define VOP_SYMLINK(v, n, a, p, c) (v)->ops->symlink(v, n, a, p, c)
 #define VOP_READLINK(v, l, c) (v)->ops->readlink(v, l, c)
+#define VOP_MMAP(v, a, o, f, c) (v)->ops->mmap(v, a, o, f, c)
+#define VOP_MUNMAP(v, a, o, f, c) (v)->ops->munmap(v, a, o, f, c)
 
 // lock not needed unless atomicity is desired
 #define VOP_POLL(v, p) (v)->ops->poll(v, p);