91 lines
3.5 KiB
C
91 lines
3.5 KiB
C
/****************************************************************************
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* fs/mount/mount.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __FS_MOUNT_MOUNT_H
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#define __FS_MOUNT_MOUNT_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#ifndef CONFIG_DISABLE_MOUNTPOINT
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct statfs; /* Forward reference */
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/* Callback used by foreach_mountpoints to traverse all mountpoints in the
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* pseudo-file system.
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*/
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typedef int (*foreach_mountpoint_t)(FAR const char *mountpoint,
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FAR struct statfs *statbuf,
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FAR void *arg);
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: foreach_mountpoint
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*
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* Description:
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* Visit each mountpoint in the pseudo-file system. The traversal is
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* terminated when the callback 'handler' returns a non-zero value, or when
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* all of the mountpoints have been visited.
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*
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* This is just a front end "filter" to foreach_inode() that forwards only
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* mountpoint inodes. It is intended to support the mount() command to
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* when the mount command is used to enumerate mounts.
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*
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* NOTE 1: Use with caution... The pseudo-file system is locked throughout
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* the traversal.
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* NOTE 2: The search algorithm is recursive and could, in principle, use
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* an indeterminant amount of stack space. This will not usually be a
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* real work issue.
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*
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****************************************************************************/
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int foreach_mountpoint(foreach_mountpoint_t handler, FAR void *arg);
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/****************************************************************************
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* Name: fs_gettype
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*
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* Description:
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* Given the result of statfs(), return a string representing the type of
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* the file system.
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*
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* Input Parameters:
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* statbuf - The result of a previouis statbuf statfs on the file system.
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*
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* Returned Value:
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* A reference to a string representing the type of the file system.
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*
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****************************************************************************/
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FAR const char *fs_gettype(FAR struct statfs *statbuf);
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#endif /* CONFIG_DISABLE_MOUNTPOINT */
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#endif /* __FS_MOUNT_MOUNT_H */
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