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xpcom/io/nsLocalFile.h@97036ab72558 (annotated)

xpcom/io/nsLocalFile.h

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0	5	*
michael@0	6	* This Original Code has been modified by IBM Corporation. Modifications made by IBM
michael@0	7	* described herein are Copyright (c) International Business Machines Corporation, 2000.
michael@0	8	* Modifications to Mozilla code or documentation identified per MPL Section 3.3
michael@0	9	*
michael@0	10	* Date Modified by Description of modification
michael@0	11	* 04/20/2000 IBM Corp. OS/2 build.
michael@0	12	*/
michael@0	13
michael@0	14	#ifndef _NS_LOCAL_FILE_H_
michael@0	15	#define _NS_LOCAL_FILE_H_
michael@0	16
michael@0	17	#include "nscore.h"
michael@0	18
michael@0	19	#define NS_LOCAL_FILE_CID {0x2e23e220, 0x60be, 0x11d3, {0x8c, 0x4a, 0x00, 0x00, 0x64, 0x65, 0x73, 0x74}}
michael@0	20
michael@0	21	#define NS_DECL_NSLOCALFILE_UNICODE_METHODS \
michael@0	22	nsresult AppendUnicode(const char16_t *aNode); \
michael@0	23	nsresult GetUnicodeLeafName(char16_t **aLeafName); \
michael@0	24	nsresult SetUnicodeLeafName(const char16_t *aLeafName); \
michael@0	25	nsresult CopyToUnicode(nsIFile *aNewParentDir, const char16_t *aNewLeafName); \
michael@0	26	nsresult CopyToFollowingLinksUnicode(nsIFile *aNewParentDir, const char16_t *aNewLeafName); \
michael@0	27	nsresult MoveToUnicode(nsIFile *aNewParentDir, const char16_t *aNewLeafName); \
michael@0	28	nsresult GetUnicodeTarget(char16_t **aTarget); \
michael@0	29	nsresult GetUnicodePath(char16_t **aPath); \
michael@0	30	nsresult InitWithUnicodePath(const char16_t *aPath); \
michael@0	31	nsresult AppendRelativeUnicodePath(const char16_t *aRelativePath);
michael@0	32
michael@0	33	// nsXPComInit needs to know about how we are implemented,
michael@0	34	// so here we will export it. Other users should not depend
michael@0	35	// on this.
michael@0	36
michael@0	37	#include <errno.h>
michael@0	38	#include "nsILocalFile.h"
michael@0	39
michael@0	40	#ifdef XP_WIN
michael@0	41	#include "nsLocalFileWin.h"
michael@0	42	#elif defined(XP_UNIX)
michael@0	43	#include "nsLocalFileUnix.h"
michael@0	44	#else
michael@0	45	#error NOT_IMPLEMENTED
michael@0	46	#endif
michael@0	47
michael@0	48	#define NSRESULT_FOR_RETURN(ret) (((ret) < 0) ? NSRESULT_FOR_ERRNO() : NS_OK)
michael@0	49
michael@0	50	inline nsresult
michael@0	51	nsresultForErrno(int err)
michael@0	52	{
michael@0	53	switch (err) {
michael@0	54	case 0:
michael@0	55	return NS_OK;
michael@0	56	#ifdef EDQUOT
michael@0	57	case EDQUOT: /* Quota exceeded */
michael@0	58	// FALLTHROUGH to return NS_ERROR_FILE_DISK_FULL
michael@0	59	#endif
michael@0	60	case ENOSPC:
michael@0	61	return NS_ERROR_FILE_DISK_FULL;
michael@0	62	#ifdef EISDIR
michael@0	63	case EISDIR: /* Is a directory. */
michael@0	64	return NS_ERROR_FILE_IS_DIRECTORY;
michael@0	65	#endif
michael@0	66	case ENAMETOOLONG:
michael@0	67	return NS_ERROR_FILE_NAME_TOO_LONG;
michael@0	68	case ENOEXEC: /* Executable file format error. */
michael@0	69	return NS_ERROR_FILE_EXECUTION_FAILED;
michael@0	70	case ENOENT:
michael@0	71	return NS_ERROR_FILE_TARGET_DOES_NOT_EXIST;
michael@0	72	case ENOTDIR:
michael@0	73	return NS_ERROR_FILE_DESTINATION_NOT_DIR;
michael@0	74	#ifdef ELOOP
michael@0	75	case ELOOP:
michael@0	76	return NS_ERROR_FILE_UNRESOLVABLE_SYMLINK;
michael@0	77	#endif /* ELOOP */
michael@0	78	#ifdef ENOLINK
michael@0	79	case ENOLINK:
michael@0	80	return NS_ERROR_FILE_UNRESOLVABLE_SYMLINK;
michael@0	81	#endif /* ENOLINK */
michael@0	82	case EEXIST:
michael@0	83	return NS_ERROR_FILE_ALREADY_EXISTS;
michael@0	84	#ifdef EPERM
michael@0	85	case EPERM:
michael@0	86	#endif /* EPERM */
michael@0	87	case EACCES:
michael@0	88	return NS_ERROR_FILE_ACCESS_DENIED;
michael@0	89	#ifdef EROFS
michael@0	90	case EROFS: /* Read-only file system. */
michael@0	91	return NS_ERROR_FILE_READ_ONLY;
michael@0	92	#endif
michael@0	93	/*
michael@0	94	* On AIX 4.3, ENOTEMPTY is defined as EEXIST,
michael@0	95	* so there can't be cases for both without
michael@0	96	* preprocessing.
michael@0	97	*/
michael@0	98	#if ENOTEMPTY != EEXIST
michael@0	99	case ENOTEMPTY:
michael@0	100	return NS_ERROR_FILE_DIR_NOT_EMPTY;
michael@0	101	#endif /* ENOTEMPTY != EEXIST */
michael@0	102	/* Note that nsIFile.createUnique() returns
michael@0	103	NS_ERROR_FILE_TOO_BIG when it cannot create a temporary
michael@0	104	file with a unique filename.
michael@0	105	See https://developer.mozilla.org/en-US/docs/Table_Of_Errors
michael@0	106	Other usages of NS_ERROR_FILE_TOO_BIG in the source tree
michael@0	107	are in line with the POSIX semantics of EFBIG.
michael@0	108	So this is a reasonably good approximation.
michael@0	109	*/
michael@0	110	case EFBIG: /* File too large. */
michael@0	111	return NS_ERROR_FILE_TOO_BIG;
michael@0	112
michael@0	113	default:
michael@0	114	return NS_ERROR_FAILURE;
michael@0	115	}
michael@0	116	}
michael@0	117
michael@0	118	#define NSRESULT_FOR_ERRNO() nsresultForErrno(errno)
michael@0	119
michael@0	120	void NS_StartupLocalFile();
michael@0	121	void NS_ShutdownLocalFile();
michael@0	122
michael@0	123	#endif