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vfs: mmap and munmap

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Matheus
2023-05-06 17:49:50 -03:00
parent eed3b390e3
commit a1919e1d36
2 changed files with 8 additions and 0 deletions
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kernel-src/include/kernel/devfs.h
+2
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@@ -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 {
kernel-src/include/kernel/vfs.h
+6
View File
@@ -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);