75 static char *get_dname(struct dentry *dentry)  in get_dname()  argument
79 	int len = dentry->d_name.len;  in get_dname()
81 	dname = dentry->d_name.name;  in get_dname()
91 				 struct inode *inode, struct dentry *dentry,  in tracefs_syscall_mkdir()  argument
97 	name = get_dname(dentry);  in tracefs_syscall_mkdir()
115 static int tracefs_syscall_rmdir(struct inode *inode, struct dentry *dentry)  in tracefs_syscall_rmdir()  argument
120 	name = get_dname(dentry);  in tracefs_syscall_rmdir()
132 	inode_unlock(d_inode(dentry));  in tracefs_syscall_rmdir()
137 	inode_lock(d_inode(dentry));  in tracefs_syscall_rmdir()
186 static void change_gid(struct dentry *dentry, kgid_t gid)  in change_gid()  argument
188 	if (!dentry->d_inode)  in change_gid()
190 	dentry->d_inode->i_gid = gid;  in change_gid()
200 static void set_gid(struct dentry *parent, kgid_t gid)  in set_gid()
202 	struct dentry *this_parent;  in set_gid()
214 		struct dentry *dentry = list_entry(tmp, struct dentry, d_child);  in set_gid()  local
217 		spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);  in set_gid()
219 		change_gid(dentry, gid);  in set_gid()
221 		if (!list_empty(&dentry->d_subdirs)) {  in set_gid()
223 			spin_release(&dentry->d_lock.dep_map, _RET_IP_);  in set_gid()
224 			this_parent = dentry;  in set_gid()
228 		spin_unlock(&dentry->d_lock);  in set_gid()
236 		struct dentry *child = this_parent;  in set_gid()
247 			child = list_entry(next, struct dentry, d_child);  in set_gid()
353 static int tracefs_show_options(struct seq_file *m, struct dentry *root)  in tracefs_show_options()
379 static void tracefs_dentry_iput(struct dentry *dentry, struct inode *inode)  in tracefs_dentry_iput()  argument
383 	if (!dentry || !inode)  in tracefs_dentry_iput()
388 		eventfs_set_ef_status_free(ti, dentry);  in tracefs_dentry_iput()
430 static struct dentry *trace_mount(struct file_system_type *fs_type,  in trace_mount()
445 struct dentry *tracefs_start_creating(const char *name, struct dentry *parent)  in tracefs_start_creating()
447 	struct dentry *dentry;  in tracefs_start_creating()  local
467 		dentry = ERR_PTR(-ENOENT);  in tracefs_start_creating()
469 		dentry = lookup_one_len(name, parent, strlen(name));  in tracefs_start_creating()
470 	if (!IS_ERR(dentry) && d_inode(dentry)) {  in tracefs_start_creating()
471 		dput(dentry);  in tracefs_start_creating()
472 		dentry = ERR_PTR(-EEXIST);  in tracefs_start_creating()
475 	if (IS_ERR(dentry)) {  in tracefs_start_creating()
480 	return dentry;  in tracefs_start_creating()
483 struct dentry *tracefs_failed_creating(struct dentry *dentry)  in tracefs_failed_creating()  argument
485 	inode_unlock(d_inode(dentry->d_parent));  in tracefs_failed_creating()
486 	dput(dentry);  in tracefs_failed_creating()
491 struct dentry *tracefs_end_creating(struct dentry *dentry)  in tracefs_end_creating()  argument
493 	inode_unlock(d_inode(dentry->d_parent));  in tracefs_end_creating()
494 	return dentry;  in tracefs_end_creating()
507 struct dentry *eventfs_start_creating(const char *name, struct dentry *parent)  in eventfs_start_creating()
509 	struct dentry *dentry;  in eventfs_start_creating()  local
527 		dentry = ERR_PTR(-ENOENT);  in eventfs_start_creating()
529 		dentry = lookup_one_len(name, parent, strlen(name));  in eventfs_start_creating()
531 	if (!IS_ERR(dentry) && dentry->d_inode) {  in eventfs_start_creating()
532 		dput(dentry);  in eventfs_start_creating()
533 		dentry = ERR_PTR(-EEXIST);  in eventfs_start_creating()
536 	if (IS_ERR(dentry))  in eventfs_start_creating()
539 	return dentry;  in eventfs_start_creating()
550 struct dentry *eventfs_failed_creating(struct dentry *dentry)  in eventfs_failed_creating()  argument
552 	dput(dentry);  in eventfs_failed_creating()
566 struct dentry *eventfs_end_creating(struct dentry *dentry)  in eventfs_end_creating()  argument
568 	return dentry;  in eventfs_end_creating()
597 struct dentry *tracefs_create_file(const char *name, umode_t mode,  in tracefs_create_file()
598 				   struct dentry *parent, void *data,  in tracefs_create_file()
601 	struct dentry *dentry;  in tracefs_create_file()  local
610 	dentry = tracefs_start_creating(name, parent);  in tracefs_create_file()
612 	if (IS_ERR(dentry))  in tracefs_create_file()
615 	inode = tracefs_get_inode(dentry->d_sb);  in tracefs_create_file()
617 		return tracefs_failed_creating(dentry);  in tracefs_create_file()
622 	inode->i_uid = d_inode(dentry->d_parent)->i_uid;  in tracefs_create_file()
623 	inode->i_gid = d_inode(dentry->d_parent)->i_gid;  in tracefs_create_file()
624 	d_instantiate(dentry, inode);  in tracefs_create_file()
625 	fsnotify_create(d_inode(dentry->d_parent), dentry);  in tracefs_create_file()
626 	return tracefs_end_creating(dentry);  in tracefs_create_file()
629 static struct dentry *__create_dir(const char *name, struct dentry *parent,  in __create_dir()
632 	struct dentry *dentry = tracefs_start_creating(name, parent);  in __create_dir()  local
635 	if (IS_ERR(dentry))  in __create_dir()
638 	inode = tracefs_get_inode(dentry->d_sb);  in __create_dir()
640 		return tracefs_failed_creating(dentry);  in __create_dir()
646 	inode->i_uid = d_inode(dentry->d_parent)->i_uid;  in __create_dir()
647 	inode->i_gid = d_inode(dentry->d_parent)->i_gid;  in __create_dir()
651 	d_instantiate(dentry, inode);  in __create_dir()
652 	inc_nlink(d_inode(dentry->d_parent));  in __create_dir()
653 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in __create_dir()
654 	return tracefs_end_creating(dentry);  in __create_dir()
674 struct dentry *tracefs_create_dir(const char *name, struct dentry *parent)  in tracefs_create_dir()
699 __init struct dentry *tracefs_create_instance_dir(const char *name,  in tracefs_create_instance_dir()
700 					  struct dentry *parent,  in tracefs_create_instance_dir()
704 	struct dentry *dentry;  in tracefs_create_instance_dir()  local
710 	dentry = __create_dir(name, parent, &tracefs_dir_inode_operations);  in tracefs_create_instance_dir()
711 	if (!dentry)  in tracefs_create_instance_dir()
717 	return dentry;  in tracefs_create_instance_dir()
720 static void remove_one(struct dentry *victim)  in remove_one()
733 void tracefs_remove(struct dentry *dentry)  in tracefs_remove()  argument
735 	if (IS_ERR_OR_NULL(dentry))  in tracefs_remove()
739 	simple_recursive_removal(dentry, remove_one);  in tracefs_remove()