64 	struct shm_obj *shm;  in shm_obj_find()  local
66 	SYS_DLIST_FOR_EACH_CONTAINER(&shm_list, shm, node) {  in shm_obj_find()
67 		if (shm->hash == key) {  in shm_obj_find()
68 			return shm;  in shm_obj_find()
75 static void shm_obj_add(struct shm_obj *shm)  in shm_obj_add()  argument
77 	sys_dlist_init(&shm->node);  in shm_obj_add()
78 	sys_dlist_append(&shm_list, &shm->node);  in shm_obj_add()
81 static void shm_obj_remove(struct shm_obj *shm)  in shm_obj_remove()  argument
83 	sys_dlist_remove(&shm->node);  in shm_obj_remove()
84 	if (shm->size > 0) {  in shm_obj_remove()
88 			if (arch_page_phys_get(shm->mem, &phys) == 0) {  in shm_obj_remove()
89 				k_mem_unmap(shm->mem, ROUND_UP(shm->size, _page_size));  in shm_obj_remove()
92 			k_free(shm->mem);  in shm_obj_remove()
95 	k_free(shm);  in shm_obj_remove()
98 static int shm_fstat(struct shm_obj *shm, struct stat *st)  in shm_fstat()  argument
102 	st->st_size = shm->size;  in shm_fstat()
107 static int shm_ftruncate(struct shm_obj *shm, off_t length)  in shm_ftruncate()  argument
117 		if (shm->size != 0) {  in shm_ftruncate()
137 	shm->mem = virt;  in shm_ftruncate()
138 	shm->size = length;  in shm_ftruncate()
143 static off_t shm_lseek(struct shm_obj *shm, off_t offset, int whence, size_t cur)  in shm_lseek()  argument
155 		addend = shm->size;  in shm_lseek()
176 static int shm_mmap(struct shm_obj *shm, void *addr, size_t len, int prot, int flags, off_t off,  in shm_mmap()  argument
184 	    ((off & (_page_size - 1)) != 0) || ((len + off) > shm->size)) {  in shm_mmap()
194 	if (shm->mem == NULL) {  in shm_mmap()
204 	*virt = shm->mem + off;  in shm_mmap()
209 static ssize_t shm_rw(struct shm_obj *shm, void *buf, size_t size, bool is_write, size_t offset)  in shm_rw()  argument
211 	if (offset >= shm->size) {  in shm_rw()
214 		size = MIN(size, shm->size - offset);  in shm_rw()
219 			memcpy(&shm->mem[offset], buf, size);  in shm_rw()
221 			memcpy(buf, &shm->mem[offset], size);  in shm_rw()
240 	struct shm_obj *shm = obj;  in shm_close()  local
242 	shm->refs -= (shm->refs > 0) ? 1 : 0;  in shm_close()
243 	if (shm->unlinked && (shm->refs == 0)) {  in shm_close()
244 		shm_obj_remove(shm);  in shm_close()
252 	struct shm_obj *shm = obj;  in shm_ioctl()  local
260 		return shm_lseek(shm, offset, whence, cur);  in shm_ioctl()
270 		return shm_mmap(shm, addr, len, prot, flags, off, maddr);  in shm_ioctl()
277 		return shm_fstat(shm, st);  in shm_ioctl()
282 		return shm_ftruncate(shm, length);  in shm_ioctl()
303 	struct shm_obj *shm;  in shm_open()  local
339 	shm = shm_obj_find(key);  in shm_open()
340 	if ((shm != NULL) && shm->unlinked) {  in shm_open()
347 		if ((shm != NULL) && excl) {  in shm_open()
353 		if (shm == NULL) {  in shm_open()
354 			shm = k_calloc(1, sizeof(*shm));  in shm_open()
355 			if (shm == NULL) {  in shm_open()
361 			shm->hash = key;  in shm_open()
362 			shm_obj_add(shm);  in shm_open()
364 	} else if (shm == NULL) {  in shm_open()
369 	++shm->refs;  in shm_open()
370 	zvfs_finalize_typed_fd(fd, shm, &shm_vtable, ZVFS_MODE_IFSHM);  in shm_open()
378 	struct shm_obj *shm;  in shm_unlink()  local
387 	shm = shm_obj_find(key);  in shm_unlink()
388 	if ((shm == NULL) || shm->unlinked) {  in shm_unlink()
393 	shm->unlinked = true;  in shm_unlink()
394 	if (shm->refs == 0) {  in shm_unlink()
395 		shm_obj_remove(shm);  in shm_unlink()