5  * SPDX-License-Identifier: Apache-2.0
34 	struct k_mutex lock;  member
37 	uint32_t mode;  member
55 		.lock = Z_MUTEX_INITIALIZER(fdtable[0].lock),
62 		.lock = Z_MUTEX_INITIALIZER(fdtable[1].lock),
69 		.lock = Z_MUTEX_INITIALIZER(fdtable[2].lock),
98 	} while (!atomic_cas(&fdtable[fd].refcount, old_rc, old_rc - 1));  in z_fd_unref()
101 		return old_rc - 1;  in z_fd_unref()
121 	return -1;  in _find_fd_entry()
128 		return -1;  in _check_fd()
135 		return -1;  in _check_fd()
151 	ref_lock = (struct k_mutex)Z_MUTEX_INITIALIZER(fdtable[fd].lock);  in fdtable_fd_is_initialized()
152 	if (memcmp(&ref_lock, &fdtable[fd].lock, sizeof(ref_lock)) != 0) {  in fdtable_fd_is_initialized()
175 	if ((vtable != NULL) && (entry->vtable != vtable)) {  in zvfs_get_fd_obj()
180 	return entry->obj;  in zvfs_get_fd_obj()
194 	return -1;  in z_get_fd_by_obj_and_vtable()
197 bool zvfs_get_obj_lock_and_cond(void *obj, const struct fd_op_vtable *vtable, struct k_mutex **lock,  in zvfs_get_obj_lock_and_cond()  argument
210 	if (lock) {  in zvfs_get_obj_lock_and_cond()
211 		*lock = &entry->lock;  in zvfs_get_obj_lock_and_cond()
215 		*cond = &entry->cond;  in zvfs_get_obj_lock_and_cond()
222 			      struct k_mutex **lock)  in zvfs_get_fd_obj_and_vtable()  argument
231 	*vtable = entry->vtable;  in zvfs_get_fd_obj_and_vtable()
233 	if (lock != NULL) {  in zvfs_get_fd_obj_and_vtable()
234 		*lock = &entry->lock;  in zvfs_get_fd_obj_and_vtable()
237 	return entry->obj;  in zvfs_get_fd_obj_and_vtable()
252 		k_mutex_init(&fdtable[fd].lock);  in zvfs_reserve_fd()
261 void zvfs_finalize_typed_fd(int fd, void *obj, const struct fd_op_vtable *vtable, uint32_t mode)  in zvfs_finalize_typed_fd()  argument
263 	/* Assumes fd was already bounds-checked. */  in zvfs_finalize_typed_fd()
269 	 * This call is a no-op if obj is invalid or points to something  in zvfs_finalize_typed_fd()
276 	fdtable[fd].mode = mode;  in zvfs_finalize_typed_fd()
278 	/* Let the object know about the lock just in case it needs it  in zvfs_finalize_typed_fd()
279 	 * for something. For BSD sockets, the lock is used with condition  in zvfs_finalize_typed_fd()
280 	 * variables to avoid keeping the lock for a long period of time.  in zvfs_finalize_typed_fd()
282 	if (vtable && vtable->ioctl) {  in zvfs_finalize_typed_fd()
284 					   &fdtable[fd].lock);  in zvfs_finalize_typed_fd()
290 	/* Assumes fd was already bounds-checked. */  in zvfs_free_fd()
306 static bool supports_pread_pwrite(uint32_t mode)  in supports_pread_pwrite()  argument
308 	switch (mode & ZVFS_MODE_IFMT) {  in supports_pread_pwrite()
323 		return -1;  in zvfs_rw()
326 	(void)k_mutex_lock(&fdtable[fd].lock, K_FOREVER);  in zvfs_rw()
328 	prw = supports_pread_pwrite(fdtable[fd].mode);  in zvfs_rw()
331 		 * Seekable file types should support pread() / pwrite() and per-fd offset passing.  in zvfs_rw()
335 		res = -1;  in zvfs_rw()
343 		if (fdtable[fd].vtable->write_offs == NULL) {  in zvfs_rw()
344 			res = -1;  in zvfs_rw()
347 			res = fdtable[fd].vtable->write_offs(fdtable[fd].obj, buf, sz, *off);  in zvfs_rw()
350 		if (fdtable[fd].vtable->read_offs == NULL) {  in zvfs_rw()
351 			res = -1;  in zvfs_rw()
354 			res = fdtable[fd].vtable->read_offs(fdtable[fd].obj, buf, sz, *off);  in zvfs_rw()
366 	k_mutex_unlock(&fdtable[fd].lock);  in zvfs_rw()
386 		return -1;  in zvfs_close()
389 	(void)k_mutex_lock(&fdtable[fd].lock, K_FOREVER);  in zvfs_close()
390 	if (fdtable[fd].vtable->close != NULL) {  in zvfs_close()
391 		/* close() is optional - e.g. stdinout_fd_op_vtable */  in zvfs_close()
392 		if (fdtable[fd].mode & ZVFS_MODE_IFSOCK) {  in zvfs_close()
396 			res = fdtable[fd].vtable->close2(fdtable[fd].obj, fd);  in zvfs_close()
398 			res = fdtable[fd].vtable->close(fdtable[fd].obj);  in zvfs_close()
401 	k_mutex_unlock(&fdtable[fd].lock);  in zvfs_close()
408 FILE *zvfs_fdopen(int fd, const char *mode)  in zvfs_fdopen()  argument
410 	ARG_UNUSED(mode);  in zvfs_fdopen()
423 		return -1;  in zvfs_fileno()
426 	return (struct fd_entry *)file - fdtable;  in zvfs_fileno()
432 		return -1;  in zvfs_fstat()
441 		return -1;  in zvfs_fsync()
454 	(void)k_mutex_lock(&fdtable[fd].lock, K_FOREVER);  in zvfs_lseek_wrap()
456 	res = fdtable[fd].vtable->ioctl(fdtable[fd].obj, cmd, args);  in zvfs_lseek_wrap()
459 		switch (fdtable[fd].mode & ZVFS_MODE_IFMT) {  in zvfs_lseek_wrap()
470 	k_mutex_unlock(&fdtable[fd].lock);  in zvfs_lseek_wrap()
478 		return -1;  in zvfs_lseek()
489 		return -1;  in zvfs_fcntl()
492 	/* The rest of commands are per-fd, handled by ioctl vmethod. */  in zvfs_fcntl()
493 	res = fdtable[fd].vtable->ioctl(fdtable[fd].obj, cmd, args);  in zvfs_fcntl()
505 	(void)k_mutex_lock(&fdtable[fd].lock, K_FOREVER);  in zvfs_ftruncate_wrap()
507 	res = fdtable[fd].vtable->ioctl(fdtable[fd].obj, cmd, args);  in zvfs_ftruncate_wrap()
509 	k_mutex_unlock(&fdtable[fd].lock);  in zvfs_ftruncate_wrap()
517 		return -1;  in zvfs_ftruncate()
526 		return -1;  in zvfs_ioctl()
529 	return fdtable[fd].vtable->ioctl(fdtable[fd].obj, request, args);  in zvfs_ioctl()
559 	return -1;  in stdinout_ioctl_vmeth()