gecko-dev/xpcom/io/nsLocalFileUnix.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
 * Implementation of nsIFile for ``Unixy'' systems.
 */

#ifndef _nsLocalFileUNIX_H_
#define _nsLocalFileUNIX_H_

#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include "nscore.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsIHashable.h"
#include "nsIClassInfoImpl.h"
#include "mozilla/Attributes.h"
#ifdef MOZ_WIDGET_COCOA
#include "nsILocalFileMac.h"
#endif

/** 
 *  we need these for statfs()
 */
#ifdef HAVE_SYS_STATVFS_H
    #if defined(__osf__) && defined(__DECCXX)
        extern "C" int statvfs(const char *, struct statvfs *);
    #endif
    #include <sys/statvfs.h>
#endif

#ifdef HAVE_SYS_STATFS_H
    #include <sys/statfs.h>
#endif

#ifdef HAVE_SYS_VFS_H
    #include <sys/vfs.h>
#endif

#ifdef HAVE_SYS_MOUNT_H
    #include <sys/param.h>
    #include <sys/mount.h>
#endif

#if defined(HAVE_STATVFS64) && (!defined(LINUX) && !defined(__osf__))
    #define STATFS statvfs64
    #define F_BSIZE f_frsize
#elif defined(HAVE_STATVFS) && (!defined(LINUX) && !defined(__osf__))
    #define STATFS statvfs
    #define F_BSIZE f_frsize
#elif defined(HAVE_STATFS64)
    #define STATFS statfs64
    #define F_BSIZE f_bsize
#elif defined(HAVE_STATFS)
    #define STATFS statfs
    #define F_BSIZE f_bsize
#endif

// stat64 and lstat64 are deprecated on OS X. Normal stat and lstat are
// 64-bit by default on OS X 10.6+.
#if defined(HAVE_STAT64) && defined(HAVE_LSTAT64) && !defined(XP_MACOSX)
    #if defined (AIX)
        #if defined STAT
            #undef STAT
        #endif
    #endif
    #define STAT stat64
    #define LSTAT lstat64
    #define HAVE_STATS64 1
#else
    #define STAT stat
    #define LSTAT lstat
#endif


class nsLocalFile MOZ_FINAL :
#ifdef MOZ_WIDGET_COCOA
                           public nsILocalFileMac,
#else
                           public nsILocalFile,
#endif
                           public nsIHashable
{
public:
    NS_DEFINE_STATIC_CID_ACCESSOR(NS_LOCAL_FILE_CID)
    
    nsLocalFile();

    static nsresult nsLocalFileConstructor(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);

    NS_DECL_THREADSAFE_ISUPPORTS
    NS_DECL_NSIFILE
    NS_DECL_NSILOCALFILE
#ifdef MOZ_WIDGET_COCOA
    NS_DECL_NSILOCALFILEMAC
#endif
    NS_DECL_NSIHASHABLE

public:
    static void GlobalInit();
    static void GlobalShutdown();

private:
    nsLocalFile(const nsLocalFile& other);
    ~nsLocalFile() {}

protected:
    // This stat cache holds the *last stat* - it does not invalidate.
    // Call "FillStatCache" whenever you want to stat our file.
    struct STAT  mCachedStat;
    nsCString    mPath;

    void LocateNativeLeafName(nsACString::const_iterator &,
                              nsACString::const_iterator &);

    nsresult CopyDirectoryTo(nsIFile *newParent);
    nsresult CreateAllAncestors(uint32_t permissions);
    nsresult GetNativeTargetPathName(nsIFile *newParent,
                                     const nsACString &newName,
                                     nsACString &_retval);

    bool FillStatCache();

    nsresult CreateAndKeepOpen(uint32_t type, int flags,
                               uint32_t permissions, PRFileDesc **_retval);
};

#endif /* _nsLocalFileUNIX_H_ */