Fix _user_entry_ref_to_path() in chroot

* Add "bool kernel" parameter to vfs_entry_ref_to_path(), so it can be
  specified for which I/O context the entry ref shall be translated.
* _user_entry_ref_to_path(): Use the calling team's I/O context instead
  of the kernel's. Fixes the bug that in a chroot the syscall would
  return a path for outside the chroot.

headers/private/kernel/vfs.h

@@ -119,7 +119,7 @@ status_t	vfs_stat_node_ref(dev_t device, ino_t inode, struct stat *stat);
 status_t	vfs_get_vnode_name(struct vnode *vnode, char *name,
 				size_t nameSize);
 status_t	vfs_entry_ref_to_path(dev_t device, ino_t inode, const char *leaf,
-				char *path, size_t pathLength);
+				bool kernel, char *path, size_t pathLength);
 status_t	vfs_get_cwd(dev_t *_mountID, ino_t *_vnodeID);
 void		vfs_unlock_vnode_if_locked(struct file_descriptor *descriptor);
 status_t	vfs_unmount(dev_t mountID, uint32 flags);

src/add-ons/kernel/file_systems/packagefs/Volume.cpp

@@ -162,7 +162,7 @@ struct Volume::PackagesDirectory {
 			RETURN_ERROR(normalizedPath.InitCheck());
 
 		char* normalizedPathBuffer = normalizedPath.LockBuffer();
-		error = vfs_entry_ref_to_path(fDeviceID, fNodeID, NULL,
+		error = vfs_entry_ref_to_path(fDeviceID, fNodeID, NULL, true,
 			normalizedPathBuffer, normalizedPath.BufferSize());
 		if (error != B_OK)
 			RETURN_ERROR(error);

src/system/kernel/device_manager/legacy_drivers.cpp

@@ -1086,7 +1086,7 @@ DirectoryWatcher::EventOccurred(NotificationService& service,
 
 	KPath path(B_PATH_NAME_LENGTH + 1);
 	if (path.InitCheck() != B_OK || vfs_entry_ref_to_path(device, directory,
-			name, path.LockBuffer(), path.BufferSize()) != B_OK)
+			name, true, path.LockBuffer(), path.BufferSize()) != B_OK)
 		return;
 
 	path.UnlockBuffer();

src/system/kernel/disk_device_manager/KDiskDeviceManager.cpp

@@ -201,8 +201,8 @@ public:
 			KPath path(B_PATH_NAME_LENGTH + 1);
 			if (path.InitCheck() != B_OK
 				|| vfs_entry_ref_to_path(event->device, event->directory,
-						event->name, path.LockBuffer(),
+					event->name, true, path.LockBuffer(),
-				path.BufferSize()) != B_OK) {
+					path.BufferSize()) != B_OK) {
 				delete event;
 				return B_ERROR;
 			}

src/system/kernel/fs/vfs.cpp

@@ -4664,7 +4664,7 @@ vfs_get_vnode_name(struct vnode* vnode, char* name, size_t nameSize)
 
 status_t
 vfs_entry_ref_to_path(dev_t device, ino_t inode, const char* leaf,
-	char* path, size_t pathLength)
+	bool kernel, char* path, size_t pathLength)
 {
 	struct vnode* vnode;
 	status_t status;
@@ -4677,7 +4677,7 @@ vfs_entry_ref_to_path(dev_t device, ino_t inode, const char* leaf,
 	if (leaf && (strcmp(leaf, ".") == 0 || strcmp(leaf, "..") == 0)) {
 		// special cases "." and "..": we can directly get the vnode of the
 		// referenced directory
-		status = entry_ref_to_vnode(device, inode, leaf, false, true, &vnode);
+		status = entry_ref_to_vnode(device, inode, leaf, false, kernel, &vnode);
 		leaf = NULL;
 	} else
 		status = get_vnode(device, inode, &vnode, true, false);
@@ -4685,7 +4685,7 @@ vfs_entry_ref_to_path(dev_t device, ino_t inode, const char* leaf,
 		return status;
 
 	// get the directory path
-	status = dir_vnode_to_path(vnode, path, pathLength, true);
+	status = dir_vnode_to_path(vnode, path, pathLength, kernel);
 	put_vnode(vnode);
 		// we don't need the vnode anymore
 	if (status != B_OK)
@@ -8708,7 +8708,7 @@ _user_entry_ref_to_path(dev_t device, ino_t inode, const char* leaf,
 	}
 
 	status_t status = vfs_entry_ref_to_path(device, inode, leaf,
-		path.LockBuffer(), path.BufferSize());
+		false, path.LockBuffer(), path.BufferSize());
 	if (status != B_OK)
 		return status;
 

src/system/kernel/module.cpp

@@ -1412,7 +1412,7 @@ ModuleNotificationService::_AddModuleNode(dev_t device, ino_t node, int fd,
 	KPath path;
 	status = path.InitCheck();
 	if (status == B_OK) {
-		status = vfs_entry_ref_to_path(device, directory, name,
+		status = vfs_entry_ref_to_path(device, directory, name, true,
 			path.LockBuffer(), path.BufferSize());
 	}
 	if (status != B_OK)
@@ -1583,7 +1583,7 @@ ModuleNotificationService::_Notify(int32 opcode, dev_t device, ino_t directory,
 	if (name != NULL) {
 		// we have an entry ref
 		if (pathBuffer.InitCheck() != B_OK
-			|| vfs_entry_ref_to_path(device, directory, name,
+			|| vfs_entry_ref_to_path(device, directory, name, true,
 				pathBuffer.LockBuffer(), pathBuffer.BufferSize()) != B_OK)
 			return;
 

src/tools/fs_shell/vfs.cpp

@@ -2690,7 +2690,7 @@ vfs_get_vnode_name(void *_vnode, char *name, fssh_size_t nameSize)
 
 fssh_status_t
 vfs_entry_ref_to_path(fssh_dev_t device, fssh_ino_t inode, const char *leaf,
-	char *path, fssh_size_t pathLength)
+	bool kernel, char *path, fssh_size_t pathLength)
 {
 	struct vnode *vnode;
 	fssh_status_t status;
@@ -5691,7 +5691,7 @@ fssh_status_t
 _kern_entry_ref_to_path(fssh_dev_t device, fssh_ino_t inode, const char *leaf,
 	char* path, fssh_size_t pathLength)
 {
-	return vfs_entry_ref_to_path(device, inode, leaf, path, pathLength);
+	return vfs_entry_ref_to_path(device, inode, leaf, true, path, pathLength);
 }