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authorThomas Schwinge <thomas@codesourcery.com>2012-05-24 23:08:09 +0200
committerThomas Schwinge <thomas@codesourcery.com>2012-05-24 23:08:09 +0200
commit2910b7c5b1d55bc304344b584a25ea571a9075fb (patch)
treebfbfbc98d4c0e205d2726fa44170a16e8421855e /hurd/interface/fs/14.mdwn
parent35b719f54c96778f571984065579625bc9f15bf5 (diff)
Prepare toolchain/logs/master branch.
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-[[!meta copyright="Copyright © 1994, 1995, 1996, 1997, 1998, 1999, 2002, 2009
-Free Software Foundation, Inc."]]
-
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
-is included in the section entitled [[GNU Free Documentation
-License|/fdl]]."]]"""]]
-
-[[!meta title="file_syncfs"]]
-
- routine file_syncfs (
- file: file_t;
- RPT
- wait: int;
- do_children: int);
-
-Synchronize the entire filesystem.
-
-This function has a companion in [[`fsys_syncfs`|fsys_syncfs]], which is
-invoked on the server's control port instead of an arbitrary node. Both of
-them are usually implemented in equivalent ways.
-
-# Implementation Examples
-
-Servers that either don't keep any unsynchronized state (or don't have a
-backing store at all) can simply `return 0`. Examples: [[translator/nfs]].
-
-The implementation typically doesn't care on which specific node (as exported
-by the implementing server) [[`file_syncfs`|file_syncfs]] is being invoked on.
-
-## [[libtrivfs]]
-
-Invoke [[`file_sync`|file_sync]] on the underlying node. Rationale: the
-underlying node represents this filesystem's backend, and once this node is
-synchronized, the whole [[libtrivfs]]-based filesystem is to be considered
-synchronized.
-
-### [[storeio]] / [[streamio]]
-
-Instead of the to underlying node, pass the call through to the backend
-(device).
-
-## [[libnetfs]]
-
-Invoke `netfs_attempt_syncfs`.
-
-## [[libdiskfs]]
-
-Invoke [[`fsys_syncfs`|fsys_syncfs]] on all active children, and invoke
-`diskfs_sync_everything` and `diskfs_set_hypermetadata`.
-
-# Usage Examples
-
-## [[glibc]]
-
- * `sync`
-
- `file_syncfs ("/", false, true)` -- invoke it on the process' root directory
- (`INIT_PORT_CRDIR`), don't wait for completion, do synchronize child
- filesystems.
-
-## [[Hurd]]
-
- * [[`syncfs`|syncfs]]