lib/vfs/mmap.c

4  * \bug The current implementation is a thin layer over an anonymous memobj.
21 #include <barrelfish/memobj.h>
27  * \param memobj  The memory object
32 static errval_t pagefault(struct memobj *memobj, struct vregion *vregion,
36     assert(memobj->type == MEMOBJ_VFS);
37     struct memobj_vfs *mv = (struct memobj_vfs *)memobj;
81     struct memobj *tmp_memobj = NULL;
129  * \param memobj  The memory object
136 errval_t memobj_create_vfs(struct memobj_vfs *memobj, size_t size,
142     // create anon memobj
143     err = memobj_create_anon(&memobj->anon, size, flags);
149     ((struct memobj *)memobj)->f.pagefault = pagefault;
152     ((struct memobj *)memobj)->type = MEMOBJ_VFS;
154     memobj->vh = vh;
155     memobj->offset = offset;
156     memobj->filesize = filesize;
162 errval_t memobj_destroy_vfs(struct memobj *memobj)
167 // Kludge to push changes in VFS memobj back out to disk
168 errval_t memobj_flush_vfs(struct memobj *memobj, struct vregion *vregion)
172     assert(memobj->type == MEMOBJ_VFS);
174     struct memobj_vfs *mv    = (struct memobj_vfs *)memobj;
236                                          struct memobj **ret_memobj)
239     struct memobj *memobj = NULL;
243     memobj = malloc(sizeof(struct memobj_vfs));
244     if (!memobj) {
254     // Create a memobj and vregion
255     err1 = memobj_create_vfs((struct memobj_vfs *)memobj, size, 0, file, offset,
263         err1 = vregion_map_fixed(vregion, get_current_vspace(), memobj, 0, size,
266         err1 = vregion_map_aligned(vregion, get_current_vspace(), memobj, 0, size,
269         err1 = vregion_map(vregion, get_current_vspace(), memobj, 0, size, flags);
277     *ret_memobj = memobj;
282     if (memobj) {
283         err2 = memobj_destroy_vfs(memobj);
287         free(memobj);
302                          struct memobj **ret_memobj)
312                                struct memobj **ret_memobj)
323                                  struct memobj **ret_memobj)