1 // SPDX-License-Identifier: GPL-2.0
35 	return -EIO;  in coda_return_EIO()
43 	struct super_block *sb = dir->i_sb;  in coda_lookup()
44 	const char *name = entry->d_name.name;  in coda_lookup()
45 	size_t length = entry->d_name.len;  in coda_lookup()
52 		return ERR_PTR(-ENAMETOOLONG);  in coda_lookup()
69 	if (inode == ERR_PTR(-ENOENT))  in coda_lookup()
82 		return -ECHILD;  in coda_permission()
90 		return -EACCES;  in coda_permission()
95 	error = venus_access(inode->i_sb, coda_i2f(inode), mask);  in coda_permission()
112 	 * granularity of the mtime is coarse anyways so we might actually be  in coda_dir_update_mtime()
114 	dir->i_mtime = dir->i_ctime = current_time(dir);  in coda_dir_update_mtime()
119  * trick to fool GNU find's optimizations. If we can't be sure of the link
125 	if (dir->i_nlink >= 2)  in coda_dir_inc_nlink()
131 	if (dir->i_nlink > 2)  in coda_dir_drop_nlink()
137 		       struct dentry *de, umode_t mode, bool excl)  in coda_create()  argument
140 	const char *name=de->d_name.name;  in coda_create()
141 	int length=de->d_name.len;  in coda_create()
147 		return -EPERM;  in coda_create()
149 	error = venus_create(dir->i_sb, coda_i2f(dir), name, length,   in coda_create()
154 	inode = coda_iget(dir->i_sb, &newfid, &attrs);  in coda_create()
162 	d_instantiate(de, inode);  in coda_create()
165 	d_drop(de);  in coda_create()
170 		      struct dentry *de, umode_t mode)  in coda_mkdir()  argument
174 	const char *name = de->d_name.name;  in coda_mkdir()
175 	int len = de->d_name.len;  in coda_mkdir()
180 		return -EPERM;  in coda_mkdir()
183 	error = venus_mkdir(dir->i_sb, coda_i2f(dir),   in coda_mkdir()
188 	inode = coda_iget(dir->i_sb, &newfid, &attrs);  in coda_mkdir()
197 	d_instantiate(de, inode);  in coda_mkdir()
200 	d_drop(de);  in coda_mkdir()
204 /* try to make de an entry in dir_inodde linked to source_de */ 
206 	  struct dentry *de)  in coda_link()  argument
209         const char * name = de->d_name.name;  in coda_link()
210 	int len = de->d_name.len;  in coda_link()
214 		return -EPERM;  in coda_link()
216 	error = venus_link(dir_inode->i_sb, coda_i2f(inode),  in coda_link()
219 		d_drop(de);  in coda_link()
225 	d_instantiate(de, inode);  in coda_link()
232 			struct inode *dir_inode, struct dentry *de,  in coda_symlink()  argument
235 	const char *name = de->d_name.name;  in coda_symlink()
236 	int len = de->d_name.len;  in coda_symlink()
241 		return -EPERM;  in coda_symlink()
245 		return -ENAMETOOLONG;  in coda_symlink()
251 	d_drop(de);  in coda_symlink()
252 	error = venus_symlink(dir_inode->i_sb, coda_i2f(dir_inode), name, len,  in coda_symlink()
263 static int coda_unlink(struct inode *dir, struct dentry *de)  in coda_unlink()  argument
266 	const char *name = de->d_name.name;  in coda_unlink()
267 	int len = de->d_name.len;  in coda_unlink()
269 	error = venus_remove(dir->i_sb, coda_i2f(dir), name, len);  in coda_unlink()
274 	drop_nlink(d_inode(de));  in coda_unlink()
278 static int coda_rmdir(struct inode *dir, struct dentry *de)  in coda_rmdir()  argument
280 	const char *name = de->d_name.name;  in coda_rmdir()
281 	int len = de->d_name.len;  in coda_rmdir()
284 	error = venus_rmdir(dir->i_sb, coda_i2f(dir), name, len);  in coda_rmdir()
287 		if (d_really_is_positive(de))  in coda_rmdir()
288 			clear_nlink(d_inode(de));  in coda_rmdir()
302 	const char *old_name = old_dentry->d_name.name;  in coda_rename()
303 	const char *new_name = new_dentry->d_name.name;  in coda_rename()
304 	int old_length = old_dentry->d_name.len;  in coda_rename()
305 	int new_length = new_dentry->d_name.len;  in coda_rename()
309 		return -EINVAL;  in coda_rename()
311 	error = venus_rename(old_dir->i_sb, coda_i2f(old_dir),  in coda_rename()
361 	host_file = cfi->cfi_container;  in coda_venus_readdir()
366 	if (!vdir) return -ENOMEM;  in coda_venus_readdir()
372 		loff_t pos = ctx->pos - 2;  in coda_venus_readdir()
378 			       __func__, coda_f2s(&cii->c_fid), ret);  in coda_venus_readdir()
384 		if (ret < vdir_size || ret < vdir_size + vdir->d_namlen) {  in coda_venus_readdir()
386 			       __func__, coda_f2s(&cii->c_fid));  in coda_venus_readdir()
387 			ret = -EBADF;  in coda_venus_readdir()
391 		if (vdir->d_reclen < vdir_size + vdir->d_namlen) {  in coda_venus_readdir()
393 			       __func__, coda_f2s(&cii->c_fid));  in coda_venus_readdir()
394 			ret = -EBADF;  in coda_venus_readdir()
398 		name.len = vdir->d_namlen;  in coda_venus_readdir()
399 		name.name = vdir->d_name;  in coda_venus_readdir()
404 			vdir->d_fileno = name.len = 0;  in coda_venus_readdir()
407 		if (vdir->d_fileno && name.len) {  in coda_venus_readdir()
408 			ino = vdir->d_fileno;  in coda_venus_readdir()
409 			type = CDT2DT(vdir->d_type);  in coda_venus_readdir()
414 		 * we've already established it is non-zero. */  in coda_venus_readdir()
415 		ctx->pos += vdir->d_reclen;  in coda_venus_readdir()
430 	host_file = cfi->cfi_container;  in coda_readdir()
432 	if (host_file->f_op->iterate || host_file->f_op->iterate_shared) {  in coda_readdir()
434 		ret = -ENOENT;  in coda_readdir()
436 			if (host_file->f_op->iterate_shared) {  in coda_readdir()
438 				ret = host_file->f_op->iterate_shared(host_file, ctx);  in coda_readdir()
443 				ret = host_file->f_op->iterate(host_file, ctx);  in coda_readdir()
455 static int coda_dentry_revalidate(struct dentry *de, unsigned int flags)  in coda_dentry_revalidate()  argument
461 		return -ECHILD;  in coda_dentry_revalidate()
463 	inode = d_inode(de);  in coda_dentry_revalidate()
469 	cii = ITOC(d_inode(de));  in coda_dentry_revalidate()
470 	if (!(cii->c_flags & (C_PURGE | C_FLUSH)))  in coda_dentry_revalidate()
473 	shrink_dcache_parent(de);  in coda_dentry_revalidate()
476 	if (cii->c_flags & C_FLUSH)   in coda_dentry_revalidate()
479 	if (d_count(de) > 1)  in coda_dentry_revalidate()
484 	spin_lock(&cii->c_lock);  in coda_dentry_revalidate()
485 	cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);  in coda_dentry_revalidate()
486 	spin_unlock(&cii->c_lock);  in coda_dentry_revalidate()
510 	if (cii->c_flags & C_PURGE)  in coda_dentry_delete()
532 	if (!cii->c_flags)  in coda_revalidate_inode()
535 	if (cii->c_flags & (C_VATTR | C_PURGE | C_FLUSH)) {  in coda_revalidate_inode()
536 		error = venus_getattr(inode->i_sb, &(cii->c_fid), &attr);  in coda_revalidate_inode()
538 			return -EIO;  in coda_revalidate_inode()
540 		/* this inode may be lost if:  in coda_revalidate_inode()
541 		   - it's ino changed   in coda_revalidate_inode()
542 		   - type changes must be permitted for repair and  in coda_revalidate_inode()
545 		old_mode = inode->i_mode;  in coda_revalidate_inode()
546 		old_ino = inode->i_ino;  in coda_revalidate_inode()
549 		if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) {  in coda_revalidate_inode()
551 				inode->i_ino, coda_f2s(&(cii->c_fid)));  in coda_revalidate_inode()
556 		if (inode->i_ino != old_ino)  in coda_revalidate_inode()
557 			return -EIO;  in coda_revalidate_inode()
561 		spin_lock(&cii->c_lock);  in coda_revalidate_inode()
562 		cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);  in coda_revalidate_inode()
563 		spin_unlock(&cii->c_lock);  in coda_revalidate_inode()