4  * SPDX-License-Identifier: Apache-2.0
29 	struct ext2_data *fs = filp->mp->fs_data;  in ext2_open()
31 	if (fs->open_files >= CONFIG_MAX_FILES) {  in ext2_open()
33 		return -EMFILE;  in ext2_open()
42 	const char *path = fs_impl_strip_prefix(fs_path, filp->mp);  in ext2_open()
88 	if ((found_inode->i_mode & EXT2_S_IFMT) != EXT2_S_IFREG) {  in ext2_open()
89 		ret = -EINVAL;  in ext2_open()
95 		ret = -ENOMEM;  in ext2_open()
99 	file->f_inode = found_inode;  in ext2_open()
100 	file->f_off = 0;  in ext2_open()
101 	file->f_flags = flags & (FS_O_RDWR | FS_O_APPEND);  in ext2_open()
103 	filp->filep = file;  in ext2_open()
117 	struct ext2_file *f = filp->filep;  in ext2_close()
119 	rc = ext2_inode_sync(f->f_inode);  in ext2_close()
124 	rc = ext2_inode_drop(f->f_inode);  in ext2_close()
130 	filp->filep = NULL;  in ext2_close()
137 	struct ext2_file *f = filp->filep;  in ext2_read()
139 	if ((f->f_flags & FS_O_READ) == 0) {  in ext2_read()
140 		return -EACCES;  in ext2_read()
143 	ssize_t r = ext2_inode_read(f->f_inode, dest, f->f_off, nbytes);  in ext2_read()
148 	f->f_off += r;  in ext2_read()
154 	struct ext2_file *f = filp->filep;  in ext2_write()
156 	if ((f->f_flags & FS_O_WRITE) == 0) {  in ext2_write()
157 		return -EACCES;  in ext2_write()
160 	if (f->f_flags & FS_O_APPEND) {  in ext2_write()
161 		f->f_off = f->f_inode->i_size;  in ext2_write()
164 	ssize_t r = ext2_inode_write(f->f_inode, src, f->f_off, nbytes);  in ext2_write()
170 	f->f_off += r;  in ext2_write()
176 	struct ext2_file *f = filp->filep;  in ext2_lseek()
185 		new_off = f->f_off + off;  in ext2_lseek()
189 		new_off = f->f_inode->i_size + off;  in ext2_lseek()
193 		return -EINVAL;  in ext2_lseek()
197 	if (new_off < 0 || new_off > f->f_inode->i_size) {  in ext2_lseek()
198 		return -EINVAL;  in ext2_lseek()
200 	f->f_off = new_off;  in ext2_lseek()
206 	struct ext2_file *f = filp->filep;  in ext2_tell()
208 	return f->f_off;  in ext2_tell()
213 	struct ext2_file *f = filp->filep;  in ext2_truncate()
215 	if ((f->f_flags & FS_O_WRITE) == 0) {  in ext2_truncate()
216 		return -EACCES;  in ext2_truncate()
219 	int rc = ext2_inode_trunc(f->f_inode, length);  in ext2_truncate()
229 	struct ext2_file *f = filp->filep;  in ext2_sync()
231 	int rc = ext2_inode_sync(f->f_inode);  in ext2_sync()
244 	struct ext2_data *fs = mountp->fs_data;  in ext2_mkdir()
267 		ret = -EEXIST;  in ext2_mkdir()
292 	const char *path = fs_impl_strip_prefix(fs_path, dirp->mp);  in ext2_opendir()
293 	struct ext2_data *fs = dirp->mp->fs_data;  in ext2_opendir()
307 	if (!(found_inode->i_mode & EXT2_S_IFDIR)) {  in ext2_opendir()
308 		ret = -ENOTDIR;  in ext2_opendir()
314 		ret = -ENOMEM;  in ext2_opendir()
320 		ret = -ENOMEM;  in ext2_opendir()
324 	dir->f_inode = found_inode;  in ext2_opendir()
325 	dir->f_off = 0;  in ext2_opendir()
327 	dirp->dirp = dir;  in ext2_opendir()
337 	struct ext2_file *dir = dirp->dirp;  in ext2_readdir()
349 	struct ext2_file *dir = dirp->dirp;  in ext2_closedir()
351 	ext2_inode_drop(dir->f_inode);  in ext2_closedir()
374 	bool possible_format = (mountp->flags & FS_MOUNT_FLAG_NO_FORMAT) == 0 &&  in ext2_mount()
375 				(mountp->flags & FS_MOUNT_FLAG_READ_ONLY) == 0;  in ext2_mount()
378 	ret = ext2_init_storage(&fs, mountp->storage_dev, mountp->flags);  in ext2_mount()
383 	fs->flags = 0;  in ext2_mount()
384 	if (mountp->flags & FS_MOUNT_FLAG_READ_ONLY) {  in ext2_mount()
385 		fs->flags |= EXT2_DATA_FLAGS_RO;  in ext2_mount()
388 	ret = fs->backend_ops->read_superblock(fs, &superblock);  in ext2_mount()
395 		fs->block_size = 1024 << superblock.s_log_block_size;  in ext2_mount()
397 	} else if (ret == -EROFS) {  in ext2_mount()
398 		fs->block_size = 1024 << superblock.s_log_block_size;  in ext2_mount()
399 		fs->flags |= EXT2_DATA_FLAGS_RO;  in ext2_mount()
402 	} else if (ret == -EINVAL && possible_format) {  in ext2_mount()
404 		fs->block_size = ext2_default_cfg.block_size;  in ext2_mount()
411 	if (fs->block_size % fs->write_size != 0) {  in ext2_mount()
413 				fs->block_size, fs->write_size);  in ext2_mount()
414 		ret = -ENOTSUP;  in ext2_mount()
422 		LOG_INF("Formatting the storage device");  in ext2_mount()
428 		/* We don't need to verify superblock here again. Format has succeeded hence  in ext2_mount()
439 	mountp->fs_data = fs;  in ext2_mount()
465 	fs->block_size = cfg->block_size;  in ext2_mkfs()
469 	LOG_INF("Formatting the storage device");  in ext2_mkfs()
485 	struct ext2_data *fs = mountp->fs_data;  in ext2_unmount()
496 	mountp->fs_data = NULL;  in ext2_unmount()
503 	struct ext2_data *fs = mountp->fs_data;  in ext2_unlink()
535 	struct ext2_data *fs = mountp->fs_data;  in ext2_rename()
537 	LOG_DBG("Rename: %s -> %s", from, to);  in ext2_rename()
584 	struct ext2_data *fs = mountp->fs_data;  in ext2_stat()
613 	struct ext2_data *fs = mountp->fs_data;  in ext2_statvfs()
615 	stat->f_bsize = fs->block_size;  in ext2_statvfs()
616 	stat->f_frsize = fs->block_size;  in ext2_statvfs()
617 	stat->f_blocks = fs->sblock.s_blocks_count;  in ext2_statvfs()
618 	stat->f_bfree = fs->sblock.s_free_blocks_count;  in ext2_statvfs()