Remove some unused code that fails to compile with -Wundef

src/trusted/service_runtime/fs/fs.h

Index: src/trusted/service_runtime/fs/fs.h
diff --git a/src/trusted/service_runtime/fs/fs.h b/src/trusted/service_runtime/fs/fs.h
deleted file mode 100644
index 50ffca86049a17607f0175be2ab6576eea863c87..0000000000000000000000000000000000000000
--- a/src/trusted/service_runtime/fs/fs.h
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- * Copyright 2008 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can
- * be found in the LICENSE file.
- */
-
-/*
- * NaCl Service Runtime Virtual Filesystem Support Interface.
- *
- * NB: this code has not been integrated with the rest of NaCl, and is
- * likely to change.
- *
- * We *really* need the low-level IMC module (../../src/shared/imc)
- * to provide a robust non-blocking / asynchronous interface.  Current
- * NACL_DONT_WAIT flag is completely bogus, since on some platforms
- * (e.g, OSX and Windows) the flag is ignored.
- *
- * For now, we burn a thread per server-based filesystem.  If that
- * thread has problems, we can time out in the upper-layer's
- * condition wait, leaving the thread stuck.
- *
- * Much of the design is patterned after NFSv2, except using an IMC
- * transport instead of UDP.
- */
-
-#ifndef NATIVE_CLIENT_SERVICE_RUNTIME_FS_FS_H_
-#define NATIVE_CLIENT_SERVICE_RUNTIME_FS_FS_H_
-
-#include "native_client/src/include/nacl_base.h"
-
-#include "native_client/src/trusted/service_runtime/include/machine/_types.h"
-
-#include "native_client/src/trusted/desc/nacl_desc_base.h"
-
-EXTERN_C_BEGIN
-
-#define NACL_MAXDATA      (64 << 10)
-#define NACL_MAXPATHLEN   1024
-#define NACL_MAXNAMLEN    255
-#define NACL_COOKIESIZE   4
-#define NACL_FHSIZE       32
-/*
- * 256 bits, so 2 AES blocks if encryption is desired.  also a random
- * value is good enough for some use cases.  we assume a secure
- * channel in any case, so only unspoofability by the client is needed
- * -- so if encryption is used, semantically secure encryption is
- * required.  since clients are service runtime implementations, and
- * NaCl modules cannot directly access this channel, spoofing is not a
- * threat.  (if we allow NaCl modules to get the IMC socket and invoke
- * the nacl_mount operation itself, then this becomes an issue.)
- */
-
-struct NaClFileSystem;
-
-/*
- * An inode within the context of a NaClFileSystem.  Essentialy
- * contains the (implemented) fields of nacl_abi_stat.  This is
- * essentially what is read from/written to filesystems, though when
- * using SRPC sans XDR or protobufs, the structure members are
- * manually serialized/deserialized.
- */
-struct NaClFileAttr {
-  nacl_abi_dev_t        dev;    /* fsid */
-  nacl_abi_ino_t        ino;    /* fileid; a per filesystem value */
-  nacl_abi_mode_t       mode;
-  nacl_abi_uid_t        uid;    /* origin ID?  presistent mapping to URI? */
-  nacl_abi_gid_t        gid;    /* ??? */
-  nacl_abi_nlink_t      nlink;  /* on-disk ref count */
-  nacl_abi_off_t        size;
-  nacl_abi_time_t       atime;  /* access time */
-  nacl_abi_time_t       mtime;  /* modification time */
-  nacl_abi_time_t       ctime;  /* inode change time */
-  /*
-   * no need to ensure padding / structure size is the same on all
-   * platforms, since we won't be running over a real network.
-   */
-};
-
-/*
- * some fs/inodes tuples are mount points, so whenever we see an inode
- * number in a directory read operation, we need to check the
- * per-filesystem list of mount points.  when a filesystem is
- * unmounted, there should be no mount points within that file system.
- */
-
-/*
- * Runtime / in-memory representation of an inode.  The filesystem in
- * which the inode is contained is determined by using the dev member
- * of the inode.
- */
-struct NaClMemFileAttr {
-  struct NaClFileAttr     fa;
-  struct NaClDescConnCap  *cc;  /* if an IMC-based device */
-
-  /*
-   * NB: instead of mounting a filesystem, we can associate an existing
-   * connection capability with an inode and make that appear to be a
-   * filesystem object.  this is just a special kind of filesystem
-   * object that contains a single entry.  this allows (some) servers
-   * to advertise their availability, using the filesystem as a name
-   * server.  the client is responsible for figuring out what the
-   * service is via service discovery, and of course the client should
-   * not necessarily trust the server.
-   */
-};
-
-/*
- * First, a NaClFileSystem base class.  We will have the in-memory
- * filesystem for the root, with files made available to the NaCl
- * module from the browser plugin (via the secure command channel), as
- * well as external file servers that provide filesystem services via
- * SRPC.  We must not trust such servers even though they normally would
- * nominally be trusted processes -- all input should be validated.
- */
-
-struct NaClFileSystemVtbl;  /* fwd */
-struct Container;  /* fwd */
-
-struct NaClFileSystem {
-  struct NaClFileSystemVtbl *vtbl;
-  struct NaClMutex          mu;
-  uint32_t                  ref_count;
-  uint64_t                  open_files_count;
-  /*
-   * device number is assigned by NaCl, do not depend on it having a
-   * particular value.  in particular, no major/minor device number
-   * encoding should be assumed.  (NB: do not make available to user
-   * apps for now.)
-   */
-  nacl_abi_dev_t            dev;
-  /* where is filesystem mounted? mountpt is NULL for the root filesystem */
-  struct NaClMemInode       *mountpt;
-  /*
-   * What inodes are mount points?
-   */
-  struct Container          *mountpt_inos;
-};
-
-void NaClFileSystemIncRef(struct NaClFileSystem *fsp);
-void NaClFileSystemDecRef(struct NaClFileSystem *fsp);
-
-struct NaClFileSystemVtbl {
-  void              (*Dtor)(struct NaClFileSystem *fsp);
-
-  void              (*IncRef)(struct NaClFileSystem *fsp);
-  /* used when mounting */
-  void              (*DecRef)(struct NaClFileSystem *fsp);
-  /* used when unmounting */
-
-  /*
-   * On-disk ref count, deletion/gc, esp if file server has multiple
-   * clients.  These are used, for example, for open(..., O_CREAT) and
-   * unlink syscalls.  We inc refcount before modifying the containing
-   * directory, and dec the refcount after modifying the containing
-   * directory -- assuming no re-ordering of filesystem operations,
-   * this ensures that if an object's refcount is inconsistent, it
-   * would just result in an inode (and associated data blocks) which
-   * is inaccessible, rather than being put into a free list while it
-   * is still accessible.
-   */
-  int               (*RefIno)(struct NaClFileSystem  *fsp,
-                              nacl_abi_ino_t         inum);
-  int               (*UnrefIno)(struct NaClFileSystem *fsp,
-                                nacl_abi_ino_t        inum);
-
-  /*
-   * In-memory refcount.  Can prevent freeing of data blocks
-   * associated with an inode, even though the on-disk ref count is
-   * zero.  These are used, for example, for open and close syscalls,
-   * so that open followed by unlink would not gc the inode and
-   * associated data blocks.  If the inode has been unlinked between
-   * the directory lookup and the unlink, DynRefIno may return
-   * -NACL_ABI_EACCES.
-   */
-  int               (*DynRefIno)(struct NaClFileSystem  *fsp,
-                                 nacl_abi_ino_t         inum);
-  int               (*DynUnrefIno)(struct NaClFileSystem  *fsp,
-                                   nacl_abi_ino_t         inum);
-
-  /* meta data */
-  int               (*ReadIno)(struct NaClFileSystem  *fsp,
-                               nacl_abi_ino_t         inum,
-                               struct NaClFileAttr    *nfap);
-  int               (*WriteIno)(struct NaClFileSystem *fsp,
-                                nacl_abi_ino_t        inum,
-                                struct NaClFileSystem *nfap);
-
-  /*
-   * data, pread/pwrite-like interface.  there's no notion of current
-   * file pointer/seek, since offset is explicit
-   */
-  nacl_abi_ssize_t  (*Read)(struct NaClFileSystem *fsp,
-                            nacl_abi_ino_t        inum,
-                            void                  *buf,
-                            nacl_abi_size_t       count,
-                            nacl_abi_off_t        offset);
-  nacl_abi_ssize_t  (*Write)(struct NaClFileSystem  *fsp,
-                             nacl_abi_ino_t         inum,
-                             void const             *buf,
-                             nacl_abi_size_t        count,
-                             nacl_abi_off_t         offset);
-  /* mmap?, mount? */
-};
-
-EXTERN_C_END
-
-#endif