/************************************************************** * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * *************************************************************/ /** @HTML */ #ifndef _OSL_FILE_H_ #define _OSL_FILE_H_ #include # include #ifdef __cplusplus extern "C" { #endif /** @file Main goals and usage hints The main intentention of this interface is to provide an universal portable and high performance access to file system issues on any operating system.

There are a few main goals:

1.The path specifications always has to be absolut. Any usage of relative path specifications is forbidden. Exceptions are osl_getSystemPathFromFileURL, osl_getFileURLFromSystemPath and osl_getAbsoluteFileURL. Most operating systems provide a "Current Directory" per process. This is the reason why relative path specifications can cause problems in multithreading environments.

2.Proprietary notations of file paths are not supported. Every path notation must the file URL specification. File URLs must be encoded in UTF8 and after that escaped. Although the URL parameter is a unicode string, the must contain only ASCII characters

3.The caller cannot get any information whether a file system is case sensitive, case preserving or not. The operating system implementation itself should determine if it can map case-insensitive paths. The case correct notation of a filename or file path is part of the "File Info". This case correct name can be used as a unique key if neccessary.

4. Obtaining information about files or volumes is controlled by a bitmask which specifies which fields are of interest. Due to performance issues it is not recommended to obtain information which is not needed. But if the operating system provides more information anyway the implementation can set more fields on output as were requested. It is in the responsibility of the caller to decide if he uses this additional information or not. But he should do so to prevent further unnecessary calls if the information is already there.
The input bitmask supports a flag osl_FileStatus_Mask_Validate which can be used to force retrieving uncached validated information. Setting this flag when calling osl_getFileStatus in combination with no other flag is a synonym for a "FileExists". This should only be done when processing a single file (f.e. before opening) and NEVER during enumeration of directory contents on any step of information processing. This would change the runtime behaviour from O(n) to O(n*n/2) on nearly every file system.
On Windows NT reading the contents of an directory with 7000 entries and getting full information about every file only takes 0.6 seconds. Specifying the flag osl_FileStatus_Mask_Validate for each entry will increase the time to 180 seconds (!!!). */ /* Error codes according to errno */ typedef enum { osl_File_E_None, osl_File_E_PERM, osl_File_E_NOENT, osl_File_E_SRCH, osl_File_E_INTR, osl_File_E_IO, osl_File_E_NXIO, osl_File_E_2BIG, osl_File_E_NOEXEC, osl_File_E_BADF, osl_File_E_CHILD, osl_File_E_AGAIN, osl_File_E_NOMEM, osl_File_E_ACCES, osl_File_E_FAULT, osl_File_E_BUSY, osl_File_E_EXIST, osl_File_E_XDEV, osl_File_E_NODEV, osl_File_E_NOTDIR, osl_File_E_ISDIR, osl_File_E_INVAL, osl_File_E_NFILE, osl_File_E_MFILE, osl_File_E_NOTTY, osl_File_E_FBIG, osl_File_E_NOSPC, osl_File_E_SPIPE, osl_File_E_ROFS, osl_File_E_MLINK, osl_File_E_PIPE, osl_File_E_DOM, osl_File_E_RANGE, osl_File_E_DEADLK, osl_File_E_NAMETOOLONG, osl_File_E_NOLCK, osl_File_E_NOSYS, osl_File_E_NOTEMPTY, osl_File_E_LOOP, osl_File_E_ILSEQ, osl_File_E_NOLINK, osl_File_E_MULTIHOP, osl_File_E_USERS, osl_File_E_OVERFLOW, osl_File_E_NOTREADY, osl_File_E_invalidError, /* unmapped error: always last entry in enum! */ osl_File_E_TIMEDOUT, osl_File_E_NETWORK, osl_File_E_FORCE_EQUAL_SIZE, osl_File_E_LOCKED = SAL_MAX_ENUM } oslFileError; typedef void *oslDirectory; typedef void *oslDirectoryItem; /** Open a directory for enumerating its contents. @param pustrDirectoryURL [in] The full qualified URL of the directory. @param pDirectory [out] On success it receives a handle used for subsequent calls by osl_getNextDirectoryItem(). The handle has to be released by a call to osl_closeDirectory(). @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOENT the specified path doesn't exist
osl_File_E_NOTDIR the specified path is not an directory
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_ACCES permission denied
osl_File_E_MFILE too many open files used by the process
osl_File_E_NFILE too many open files in the system
osl_File_E_NAMETOOLONG File name too long
osl_File_E_LOOP Too many symbolic links encountered

@see osl_getNextDirectoryItem() @see osl_closeDirectory() */ oslFileError SAL_CALL osl_openDirectory( rtl_uString *pustrDirectoryURL, oslDirectory *pDirectory); /** Retrieve the next item of a previously opened directory. Retrieves the next item of a previously opened directory. All handles have an initial refcount of 1. @param Directory [in] A directory handle received from a previous call to osl_openDirectory(). @param pItem [out] On success it receives a handle that can be used for subsequent calls to osl_getFileStatus(). The handle has to be released by a call to osl_releaseDirectoryItem(). @param uHint [in] With this parameter the caller can tell the implementation that (s)he is going to call this function uHint times afterwards. This enables the implementation to get the information for more than one file and cache it until the next calls. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_NOENT no more entries in this directory
osl_File_E_BADF invalid oslDirectory parameter
osl_File_E_OVERFLOW the value too large for defined data type @see osl_releaseDirectoryItem() @see osl_acquireDirectoryItem() @see osl_getDirectoryItem() @see osl_getFileStatus() */ oslFileError SAL_CALL osl_getNextDirectoryItem( oslDirectory Directory, oslDirectoryItem *pItem, sal_uInt32 uHint ); /** Release a directory handle. @param Directory [in] A handle received by a call to osl_openDirectory(). @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_BADF invalid oslDirectory parameter
osl_File_E_INTR the function call was interrupted

@see osl_openDirectory() */ oslFileError SAL_CALL osl_closeDirectory(oslDirectory Directory); /** Retrieve a single directory item. Retrieves a single directory item. The returned handle has an initial refcount of 1. Due to performance issues it is not recommended to use this function while enumerating the contents of a directory. In this case use osl_getNextDirectoryItem() instead. @param pustrFileURL [in] An absolute file URL. @param pItem [out] On success it receives a handle which can be used for subsequent calls to osl_getFileStatus(). The handle has to be released by a call to osl_releaseDirectoryItem(). @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_ACCES permission denied
osl_File_E_MFILE too many open files used by the process
osl_File_E_NFILE too many open files in the system
osl_File_E_NOENT no such file or directory
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_NAMETOOLONG the file name is too long
osl_File_E_NOTDIR a component of the path prefix of path is not a directory
osl_File_E_IO on I/O errors
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
osl_File_E_FAULT bad address
osl_File_E_INTR the function call was interrupted

@see osl_releaseDirectoryItem() @see osl_acquireDirectoryItem() @see osl_getFileStatus() @see osl_getNextDirectoryItem() */ oslFileError SAL_CALL osl_getDirectoryItem( rtl_uString *pustrFileURL, oslDirectoryItem *pItem ); /** Increase the refcount of a directory item handle. The caller responsible for releasing the directory item handle using osl_releaseDirectoryItem(). @param Item [in] A handle received by a call to osl_getDirectoryItem() or osl_getNextDirectoryItem(). @return osl_File_E_None on success
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_INVAL the format of the parameters was not valid
@see osl_getDirectoryItem() @see osl_getNextDirectoryItem() @see osl_releaseDirectoryItem() */ oslFileError SAL_CALL osl_acquireDirectoryItem( oslDirectoryItem Item ); /** Decrease the refcount of a directory item handle. Decreases the refcount of a directory item handle. If the refcount reaches 0 the data associated with this directory item handle will be released. @param Item [in] A handle received by a call to osl_getDirectoryItem() or osl_getNextDirectoryItem(). @return osl_File_E_None on success
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_INVAL the format of the parameters was not valid
@see osl_getDirectoryItem() @see osl_getNextDirectoryItem() @see osl_acquireDirectoryItem() */ oslFileError SAL_CALL osl_releaseDirectoryItem( oslDirectoryItem Item ); /* File types */ typedef enum { osl_File_Type_Directory, osl_File_Type_Volume, osl_File_Type_Regular, osl_File_Type_Fifo, osl_File_Type_Socket, osl_File_Type_Link, osl_File_Type_Special, osl_File_Type_Unknown } oslFileType; /* File attributes */ #define osl_File_Attribute_ReadOnly 0x00000001 #define osl_File_Attribute_Hidden 0x00000002 #define osl_File_Attribute_Executable 0x00000010 #define osl_File_Attribute_GrpWrite 0x00000020 #define osl_File_Attribute_GrpRead 0x00000040 #define osl_File_Attribute_GrpExe 0x00000080 #define osl_File_Attribute_OwnWrite 0x00000100 #define osl_File_Attribute_OwnRead 0x00000200 #define osl_File_Attribute_OwnExe 0x00000400 #define osl_File_Attribute_OthWrite 0x00000800 #define osl_File_Attribute_OthRead 0x00001000 #define osl_File_Attribute_OthExe 0x00002000 /* Flags specifying which fields to retreive by osl_getFileStatus */ #define osl_FileStatus_Mask_Type 0x00000001 #define osl_FileStatus_Mask_Attributes 0x00000002 #define osl_FileStatus_Mask_CreationTime 0x00000010 #define osl_FileStatus_Mask_AccessTime 0x00000020 #define osl_FileStatus_Mask_ModifyTime 0x00000040 #define osl_FileStatus_Mask_FileSize 0x00000080 #define osl_FileStatus_Mask_FileName 0x00000100 #define osl_FileStatus_Mask_FileURL 0x00000200 #define osl_FileStatus_Mask_LinkTargetURL 0x00000400 #define osl_FileStatus_Mask_All 0x7FFFFFFF #define osl_FileStatus_Mask_Validate 0x80000000 typedef /** Structure containing information about files and directories @see osl_getFileStatus() @see oslFileType */ struct _oslFileStatus { /** Must be initialized with the size in bytes of the structure before passing it to any function */ sal_uInt32 uStructSize; /** Determines which members of the structure contain valid data */ sal_uInt32 uValidFields; /** The type of the file (file, directory, volume). */ oslFileType eType; /** File attributes */ sal_uInt64 uAttributes; /** First creation time in nanoseconds since 1/1/1970. Can be the last modify time depending on platform or file system. */ TimeValue aCreationTime; /** Last access time in nanoseconds since 1/1/1970. Can be the last modify time depending on platform or file system. */ TimeValue aAccessTime; /** Last modify time in nanoseconds since 1/1/1970. */ TimeValue aModifyTime; /** Size in bytes of the file. Zero for directories and volumes. */ sal_uInt64 uFileSize; /** Case correct name of the file. Should be set to zero before calling osl_getFileStatus and released after usage. */ rtl_uString *ustrFileName; /** Full URL of the file. Should be set to zero before calling osl_getFileStatus and released after usage. */ rtl_uString *ustrFileURL; /** Full URL of the target file if the file itself is a link. Should be set to zero before calling osl_getFileStatus and released after usage. */ rtl_uString *ustrLinkTargetURL; } oslFileStatus; /** Retrieve information about a single file or directory. @param Item [in] A handle received by a previous call to osl_getDirectoryItem() or osl_getNextDirectoryItem(). @param pStatus [in|out] Points to a structure which receives the information of the file or directory represented by the handle Item. The member uStructSize has to be initialized to sizeof(oslFileStatus) before calling this function. @param uFieldMask [in] Specifies which fields of the structure pointed to by pStatus are of interest to the caller. @return osl_File_E_None on success
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_ACCES permission denied
osl_File_E_NOENT no such file or directory
osl_File_E_NAMETOOLONG file name too long
osl_File_E_BADF invalid oslDirectoryItem parameter
osl_File_E_FAULT bad address
osl_File_E_OVERFLOW value too large for defined data type
osl_File_E_INTR function call was interrupted
osl_File_E_NOLINK link has been severed
osl_File_E_MULTIHOP components of path require hopping to multiple remote machines and the file system does not allow it
osl_File_E_MFILE too many open files used by the process
osl_File_E_NFILE too many open files in the system
osl_File_E_NOSPC no space left on device
osl_File_E_NXIO no such device or address
osl_File_E_IO on I/O errors
osl_File_E_NOSYS function not implemented

@see osl_getDirectoryItem() @see osl_getNextDirectoryItem() @see oslFileStatus */ oslFileError SAL_CALL osl_getFileStatus( oslDirectoryItem Item, oslFileStatus *pStatus, sal_uInt32 uFieldMask ); typedef void *oslVolumeDeviceHandle; /** Unmount a volume device. Unmount the volume specified by the given oslVolumeDeviceHandle. @param Handle [in] An oslVolumeDeviceHandle received by a call to osl_getVolumeInformation(). @return osl_File_E_None on success
@todo specify all error codes that may be returned @see osl_getVolumeInformation() */ oslFileError SAL_CALL osl_unmountVolumeDevice( oslVolumeDeviceHandle Handle ); /** Automount a volume device. Automount the volume device specified by the given oslVolumeDeviceHandle. @param Handle [in] An oslVolumeDeviceHandle received by a call to osl_getVolumeInformation(). @return osl_File_E_None on success
@todo specify all error codes that may be returned @see osl_getVolumeInformation() */ oslFileError SAL_CALL osl_automountVolumeDevice( oslVolumeDeviceHandle Handle ); /** Release a volume device handle. Releases the given oslVolumeDeviceHandle which was acquired by a call to osl_getVolumeInformation() or osl_acquireVolumeDeviceHandle(). @param Handle [in] An oslVolumeDeviceHandle received by a call to osl_getVolumeInformation(). @return osl_File_E_None on success
@todo specify all error codes that may be returned @see osl_acquireVolumeDeviceHandle() @see osl_getVolumeInformation() */ oslFileError SAL_CALL osl_releaseVolumeDeviceHandle( oslVolumeDeviceHandle Handle ); /** Acquire a volume device handle. Acquires the given oslVolumeDeviceHandle which was acquired by a call to osl_getVolumeInformation(). The caller is responsible for releasing the acquired handle by calling osl_releaseVolumeDeviceHandle(). @param Handle [in] An oslVolumeDeviceHandle received by a call to osl_getVolumeInformation(). @return osl_File_E_None on success
@todo specify all error codes that may be returned @see osl_getVolumeInformation() */ oslFileError SAL_CALL osl_acquireVolumeDeviceHandle( oslVolumeDeviceHandle Handle ); /** Get the full qualified URL where a device is mounted to. @param Handle [in] An oslVolumeDeviceHandle received by a call to osl_getVolumeInformation(). @param ppustrDirectoryURL [out] Receives the full qualified URL where the device is mounted to. @return osl_File_E_None on success
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_ACCES permission denied
osl_File_E_NXIO no such device or address
osl_File_E_NODEV no such device
osl_File_E_NOENT no such file or directory
osl_File_E_FAULT bad address
osl_FilE_E_INTR function call was interrupted
osl_File_E_IO on I/O errors
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
osl_File_E_EOVERFLOW value too large for defined data type
@see osl_getVolumeInformation() @see osl_automountVolumeDevice() @see osl_unmountVolumeDevice() */ oslFileError SAL_CALL osl_getVolumeDeviceMountPath( oslVolumeDeviceHandle Handle, rtl_uString **ppustrDirectoryURL); /* Volume attributes */ #define osl_Volume_Attribute_Removeable 0x00000001L #define osl_Volume_Attribute_Remote 0x00000002L #define osl_Volume_Attribute_CompactDisc 0x00000004L #define osl_Volume_Attribute_FixedDisk 0x00000008L #define osl_Volume_Attribute_RAMDisk 0x00000010L #define osl_Volume_Attribute_FloppyDisk 0x00000020L #define osl_Volume_Attribute_Case_Is_Preserved 0x00000040L #define osl_Volume_Attribute_Case_Sensitive 0x00000080L /* Flags specifying which fields to retreive by osl_getVolumeInfo */ #define osl_VolumeInfo_Mask_Attributes 0x00000001L #define osl_VolumeInfo_Mask_TotalSpace 0x00000002L #define osl_VolumeInfo_Mask_UsedSpace 0x00000004L #define osl_VolumeInfo_Mask_FreeSpace 0x00000008L #define osl_VolumeInfo_Mask_MaxNameLength 0x00000010L #define osl_VolumeInfo_Mask_MaxPathLength 0x00000020L #define osl_VolumeInfo_Mask_FileSystemName 0x00000040L #define osl_VolumeInfo_Mask_DeviceHandle 0x00000080L #define osl_VolumeInfo_Mask_FileSystemCaseHandling 0x00000100L typedef /** Structure containing information about volumes @see osl_getVolumeInformation() @see oslFileType */ struct _oslVolumeInfo { /** Must be initialized with the size in bytes of the structure before passing it to any function */ sal_uInt32 uStructSize; /** Determines which members of the structure contain valid data */ sal_uInt32 uValidFields; /** Attributes of the volume (remote and/or removable) */ sal_uInt32 uAttributes; /** Total availiable space on the volume for the current process/user */ sal_uInt64 uTotalSpace; /** Used space on the volume for the current process/user */ sal_uInt64 uUsedSpace; /** Free space on the volume for the current process/user */ sal_uInt64 uFreeSpace; /** Maximum length of file name of a single item */ sal_uInt32 uMaxNameLength; /** Maximum length of a full quallified path in system notation */ sal_uInt32 uMaxPathLength; /** Points to a string that receives the name of the file system type. String should be set to zero before calling osl_getVolumeInformation and released after usage. */ rtl_uString *ustrFileSystemName; /** Pointer to handle the receives underlying device. Handle should be set to zero before calling osl_getVolumeInformation*/ oslVolumeDeviceHandle *pDeviceHandle; } oslVolumeInfo; /** Retrieve information about a volume. Retrieves information about a volume. A volume can either be a mount point, a network resource or a drive depending on Operating System and File System. Before calling this function osl_getFileStatus() should be called to determine if the type is osl_file_Type_Volume. @param pustrDirectoryURL [in] Full qualified URL of the volume @param pInfo [out] On success it receives information about the volume. @param uFieldMask [in] Specifies which members of the structure should be filled @return osl_File_E_None on success
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOTDIR not a directory
osl_File_E_NAMETOOLONG file name too long
osl_File_E_NOENT no such file or directory
osl_File_E_ACCES permission denied
osl_File_E_LOOP too many symbolic links encountered
ols_File_E_FAULT Bad address
osl_File_E_IO on I/O errors
osl_File_E_NOSYS function not implemented
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
osl_File_E_INTR function call was interrupted
@see osl_getFileStatus() @see oslVolumeInfo */ oslFileError SAL_CALL osl_getVolumeInformation( rtl_uString *pustrDirectoryURL, oslVolumeInfo *pInfo, sal_uInt32 uFieldMask ); typedef void *oslFileHandle; /* Open flags */ #define osl_File_OpenFlag_Read 0x00000001L #define osl_File_OpenFlag_Write 0x00000002L #define osl_File_OpenFlag_Create 0x00000004L #define osl_File_OpenFlag_NoLock 0x00000008L /** Open a regular file. Open a file. Only regular files can be openend. @param pustrFileURL [in] The full qualified URL of the file to open. @param pHandle [out] On success it receives a handle to the open file. @param uFlags [in] Specifies the open mode. @return osl_File_E_None on success
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NAMETOOLONG pathname was too long
osl_File_E_NOENT no such file or directory
osl_File_E_ACCES permission denied
osl_File_E_AGAIN a write lock could not be established
osl_File_E_NOTDIR not a directory
osl_File_E_NXIO no such device or address
osl_File_E_NODEV no such device
osl_File_E_ROFS read-only file system
osl_File_E_TXTBSY text file busy
osl_File_E_FAULT bad address
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_NOSPC no space left on device
osl_File_E_ISDIR is a directory
osl_File_E_MFILE too many open files used by the process
osl_File_E_NFILE too many open files in the system
osl_File_E_DQUOT quota exceeded
osl_File_E_EXIST file exists
osl_FilE_E_INTR function call was interrupted
osl_File_E_IO on I/O errors
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
osl_File_E_EOVERFLOW value too large for defined data type
@see osl_closeFile() @see osl_setFilePos() @see osl_getFilePos() @see osl_readFile() @see osl_writeFile() @see osl_setFileSize() @see osl_getFileSize() */ oslFileError SAL_CALL osl_openFile( rtl_uString *pustrFileURL, oslFileHandle *pHandle, sal_uInt32 uFlags ); #define osl_Pos_Absolut 1 #define osl_Pos_Current 2 #define osl_Pos_End 3 /** Set the internal position pointer of an open file. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param uHow [in] Distance to move the internal position pointer (from uPos). @param uPos [in] Absolute position from the beginning of the file. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files
@see osl_openFile() @see osl_getFilePos() */ oslFileError SAL_CALL osl_setFilePos( oslFileHandle Handle, sal_uInt32 uHow, sal_Int64 uPos ); /** Retrieve the current position of the internal pointer of an open file. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param pPos [out] On success receives the current position of the file pointer. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files
@see osl_openFile() @see osl_setFilePos() @see osl_readFile() @see osl_writeFile() */ oslFileError SAL_CALL osl_getFilePos( oslFileHandle Handle, sal_uInt64 *pPos ); /** Set the file size of an open file. Sets the file size of an open file. The file can be truncated or enlarged by the function. The position of the file pointer is not affeced by this function. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param uSize [in] New size in bytes. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files
@see osl_openFile() @see osl_setFilePos() @see osl_getFileStatus() @see osl_getFileSize() */ oslFileError SAL_CALL osl_setFileSize( oslFileHandle Handle, sal_uInt64 uSize ); /** Get the file size of an open file. Gets the file size of an open file. The position of the file pointer is not affeced by this function. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param pSize [out] Current size in bytes. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files
@see osl_openFile() @see osl_setFilePos() @see osl_getFileStatus() */ oslFileError SAL_CALL osl_getFileSize( oslFileHandle Handle, sal_uInt64 *pSize ); /** Map flags. @since UDK 3.2.10 */ #define osl_File_MapFlag_RandomAccess ((sal_uInt32)(0x1)) /** Map flag denoting that the mapped address space will be accessed by the process soon (and it is advantageous for the operating system to already start paging in the data). @since UDK 3.2.12 */ #define osl_File_MapFlag_WillNeed ((sal_uInt32)(0x2)) /** Map a shared file into memory. @since UDK 3.2.10 */ oslFileError SAL_CALL osl_mapFile ( oslFileHandle Handle, void** ppAddr, sal_uInt64 uLength, sal_uInt64 uOffset, sal_uInt32 uFlags ); /** Unmap a shared file from memory. @since UDK 3.2.10 */ oslFileError SAL_CALL osl_unmapFile ( void* pAddr, sal_uInt64 uLength ); /** Read a number of bytes from a file. Reads a number of bytes from a file. The internal file pointer is increased by the number of bytes read. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param pBuffer [out] Points to a buffer which receives data. The buffer must be large enough to hold uBytesRequested bytes. @param uBytesRequested [in] Number of bytes which should be retrieved. @param pBytesRead [out] On success the number of bytes which have actually been retrieved. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_INTR function call was interrupted
osl_File_E_IO on I/O errors
osl_File_E_ISDIR is a directory
osl_File_E_BADF bad file
osl_File_E_FAULT bad address
osl_File_E_AGAIN operation would block
osl_File_E_NOLINK link has been severed
@see osl_openFile() @see osl_writeFile() @see osl_readLine() @see osl_setFilePos() */ oslFileError SAL_CALL osl_readFile( oslFileHandle Handle, void *pBuffer, sal_uInt64 uBytesRequested, sal_uInt64 *pBytesRead ); /** Test if the end of a file is reached. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param pIsEOF [out] Points to a variable that receives the end-of-file status. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_INTR function call was interrupted
osl_File_E_IO on I/O errors
osl_File_E_ISDIR is a directory
osl_File_E_BADF bad file
osl_File_E_FAULT bad address
osl_File_E_AGAIN operation would block
osl_File_E_NOLINK link has been severed

@see osl_openFile() @see osl_readFile() @see osl_readLine() @see osl_setFilePos() */ oslFileError SAL_CALL osl_isEndOfFile( oslFileHandle Handle, sal_Bool *pIsEOF ); /** Write a number of bytes to a file. Writes a number of bytes to a file. The internal file pointer is increased by the number of bytes read. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param pBuffer [in] Points to a buffer which contains the data. @param uBytesToWrite [in] Number of bytes which should be written. @param pBytesWritten [out] On success the number of bytes which have actually been written. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_FBIG file too large
osl_File_E_DQUOT quota exceeded

osl_File_E_AGAIN operation would block
osl_File_E_BADF bad file
osl_File_E_FAULT bad address
osl_File_E_INTR function call was interrupted
osl_File_E_IO on I/O errosr
osl_File_E_NOLCK no record locks available
osl_File_E_NOLINK link has been severed
osl_File_E_NOSPC no space left on device
osl_File_E_NXIO no such device or address
@see osl_openFile() @see osl_readFile() @see osl_setFilePos() */ oslFileError SAL_CALL osl_writeFile( oslFileHandle Handle, const void *pBuffer, sal_uInt64 uBytesToWrite, sal_uInt64 *pBytesWritten ); /** Read a number of bytes from a specified offset in a file. The current position of the internal file pointer may or may not be changed. @since UDK 3.2.10 */ oslFileError SAL_CALL osl_readFileAt( oslFileHandle Handle, sal_uInt64 uOffset, void* pBuffer, sal_uInt64 uBytesRequested, sal_uInt64* pBytesRead ); /** Write a number of bytes to a specified offset in a file. The current position of the internal file pointer may or may not be changed. @since UDK 3.2.10 */ oslFileError SAL_CALL osl_writeFileAt( oslFileHandle Handle, sal_uInt64 uOffset, const void* pBuffer, sal_uInt64 uBytesToWrite, sal_uInt64* pBytesWritten ); /** Read a line from a file. Reads a line from a file. The new line delimiter is NOT returned! @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @param ppSequence [in/out] A pointer pointer to a sal_Sequence that will hold the line read on success. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_INTR function call was interrupted
osl_File_E_IO on I/O errors
osl_File_E_ISDIR is a directory
osl_File_E_BADF bad file
osl_File_E_FAULT bad address
osl_File_E_AGAIN operation would block
osl_File_E_NOLINK link has been severed

@see osl_openFile() @see osl_readFile() @see osl_writeFile() @see osl_setFilePos() */ oslFileError SAL_CALL osl_readLine( oslFileHandle Handle, sal_Sequence** ppSequence ); /** Synchronize the memory representation of a file with that on the physical medium. The function ensures that all modified data and attributes of the file associated with the given file handle have been written to the physical medium. In case the hard disk has a write cache enabled, the data may not really be on permanent storage when osl_syncFile returns. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @return

osl_File_E_None
On success
osl_File_E_INVAL
The value of the input parameter is invalid

In addition to these error codes others may occur as well, for instance:


osl_File_E_BADF
The file associated with the given file handle is not open for writing
osl_File_E_IO
An I/O error occurred
osl_File_E_NOSPC
There is no enough space on the target device
osl_File_E_ROFS
The file associated with the given file handle is located on a read only file system
osl_File_E_TIMEDOUT
A remote connection timed out. This may happen when a file is on a remote location
@see osl_openFile() @see osl_writeFile() */ oslFileError SAL_CALL osl_syncFile(oslFileHandle Handle); /** Close an open file. @param Handle [in] Handle to a file received by a previous call to osl_openFile(). @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_BADF Bad file
osl_File_E_INTR function call was interrupted
osl_File_E_NOLINK link has been severed
osl_File_E_NOSPC no space left on device
osl_File_E_IO on I/O errors
@see osl_openFile() */ oslFileError SAL_CALL osl_closeFile( oslFileHandle Handle ); /** Create a directory. @param pustrDirectoryURL [in] Full qualified URL of the directory to create. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_EXIST file exists
osl_File_E_ACCES permission denied
osl_File_E_NAMETOOLONG file name too long
osl_File_E_NOENT no such file or directory
osl_File_E_NOTDIR not a directory
osl_File_E_ROFS read-only file system
osl_File_E_NOSPC no space left on device
osl_File_E_DQUOT quota exceeded
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_FAULT bad address
osl_FileE_IO on I/O errors
osl_File_E_MLINK too many links
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
@see osl_removeDirectory() */ oslFileError SAL_CALL osl_createDirectory( rtl_uString* pustrDirectoryURL ); /** Remove an empty directory. @param pustrDirectoryURL [in] Full qualified URL of the directory. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_PERM operation not permitted
osl_File_E_ACCES permission denied
osl_File_E_NOENT no such file or directory
osl_File_E_NOTDIR not a directory
osl_File_E_NOTEMPTY directory not empty
osl_File_E_FAULT bad address
osl_File_E_NAMETOOLONG file name too long
osl_File_E_BUSY device or resource busy
osl_File_E_ROFS read-only file system
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_BUSY device or resource busy
osl_File_E_EXIST file exists
osl_File_E_IO on I/O errors
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
@see osl_createDirectory() */ oslFileError SAL_CALL osl_removeDirectory( rtl_uString* pustrDirectoryURL ); /** Function pointer representing a function that will be called by osl_createDirectoryPath if a directory has been created. To avoid unpredictable results the callee must not access the directory whose creation is just notified. @param pData [in] User specified data given in osl_createDirectoryPath. @param aDirectoryUrl [in] The absolute file URL of the directory that was just created by osl_createDirectoryPath. @see osl_createDirectoryPath */ typedef void (SAL_CALL *oslDirectoryCreationCallbackFunc)(void* pData, rtl_uString* aDirectoryUrl); /** Create a directory path. The osl_createDirectoryPath function creates a specified directory path. All nonexisting sub directories will be created.

PLEASE NOTE: You cannot rely on getting the error code osl_File_E_EXIST for existing directories. Programming against this error code is in general a strong indication of a wrong usage of osl_createDirectoryPath.

@param aDirectoryUrl [in] The absolute file URL of the directory path to create. A relative file URL will not be accepted. @param aDirectoryCreationFunc [in] Pointer to a function that will be called synchronously for each sub directory that was created. The value of this parameter may be NULL, in this case notifications will not be sent. @param pData [in] User specified data to be passed to the directory creation callback function. The value of this parameter may be arbitrary and will not be interpreted by osl_createDirectoryPath. @return
osl_File_E_None
On success
osl_File_E_INVAL
The format of the parameters was not valid
osl_File_E_ACCES
Permission denied
osl_File_E_EXIST
The final node of the specified directory path already exist
osl_File_E_NAMETOOLONG
The name of the specified directory path exceeds the maximum allowed length
osl_File_E_NOTDIR
A component of the specified directory path already exist as file in any part of the directory path
osl_File_E_ROFS
Read-only file system
osl_File_E_NOSPC
No space left on device
osl_File_E_DQUOT
Quota exceeded
osl_File_E_FAULT
Bad address
osl_File_E_IO
I/O error
osl_File_E_LOOP
Too many symbolic links encountered
osl_File_E_NOLINK
Link has been severed
osl_File_E_invalidError
An unknown error occurred
@see oslDirectoryCreationFunc @see oslFileError @see osl_createDirectory */ oslFileError SAL_CALL osl_createDirectoryPath( rtl_uString* aDirectoryUrl, oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc, void* pData); /** Remove a regular file. @param pustrFileURL [in] Full qualified URL of the file to remove. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_ACCES permission denied
osl_File_E_PERM operation not permitted
osl_File_E_NAMETOOLONG file name too long
osl_File_E_NOENT no such file or directory
osl_File_E_ISDIR is a directory
osl_File_E_ROFS read-only file system
osl_File_E_FAULT bad address
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_IO on I/O errors
osl_File_E_BUSY device or resource busy
osl_File_E_INTR function call was interrupted
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
osl_File_E_TXTBSY text file busy
@see osl_openFile() */ oslFileError SAL_CALL osl_removeFile( rtl_uString* pustrFileURL ); /** Copy a file to a new destination. Copies a file to a new destination. Copies only files not directories. No assumptions should be made about preserving attributes or file time. @param pustrSourceFileURL [in] Full qualified URL of the source file. @param pustrDestFileURL [in] Full qualified URL of the destination file. A directory is NOT a valid destination file! @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_ACCES permission denied
osl_File_E_PERM operation not permitted
osl_File_E_NAMETOOLONG file name too long
osl_File_E_NOENT no such file or directory
osl_File_E_ISDIR is a directory
osl_File_E_ROFS read-only file system

@see osl_moveFile() @see osl_removeFile() */ oslFileError SAL_CALL osl_copyFile( rtl_uString* pustrSourceFileURL, rtl_uString *pustrDestFileURL ); /** Move a file or directory to a new destination or renames it. Moves a file or directory to a new destination or renames it. File time and attributes are preserved. @param pustrSourceFileURL [in] Full qualified URL of the source file. @param pustrDestFileURL [in] Full qualified URL of the destination file. An existing directory is NOT a valid destination ! @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_ACCES permission denied
osl_File_E_PERM operation not permitted
osl_File_E_NAMETOOLONG file name too long
osl_File_E_NOENT no such file or directory
osl_File_E_ROFS read-only file system
@see osl_copyFile() */ oslFileError SAL_CALL osl_moveFile( rtl_uString* pustrSourceFileURL, rtl_uString *pustrDestFileURL ); /** Determine a valid unused canonical name for a requested name. Determines a valid unused canonical name for a requested name. Depending on the Operating System and the File System the illegal characters are replaced by valid ones. If a file or directory with the requested name already exists a new name is generated following the common rules on the actual Operating System and File System. @param pustrRequestedURL [in] Requested name of a file or directory. @param ppustrValidURL [out] On success receives a name which is unused and valid on the actual Operating System and File System. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
@see osl_getFileStatus() */ oslFileError SAL_CALL osl_getCanonicalName( rtl_uString *pustrRequestedURL, rtl_uString **ppustrValidURL); /** Convert a path relative to a given directory into an full qualified file URL. Convert a path relative to a given directory into an full qualified file URL. The function resolves symbolic links if possible and path ellipses, so on success the resulting absolute path is fully resolved. @param pustrBaseDirectoryURL [in] Base directory URL to which the relative path is related to. @param pustrRelativeFileURL [in] An URL of a file or directory relative to the directory path specified by pustrBaseDirectoryURL or an absolute path. If pustrRelativeFileURL denotes an absolute path pustrBaseDirectoryURL will be ignored. @param ppustrAbsoluteFileURL [out] On success it receives the full qualified absoulte file URL. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOMEM not enough memory for allocating structures
osl_File_E_NOTDIR not a directory
osl_File_E_ACCES permission denied
osl_File_E_NOENT no such file or directory
osl_File_E_NAMETOOLONG file name too long
osl_File_E_OVERFLOW value too large for defined data type
osl_File_E_FAULT bad address
osl_File_E_INTR function call was interrupted
osl_File_E_LOOP too many symbolic links encountered
osl_File_E_MULTIHOP multihop attempted
osl_File_E_NOLINK link has been severed
@see osl_getFileStatus() */ oslFileError SAL_CALL osl_getAbsoluteFileURL( rtl_uString* pustrBaseDirectoryURL, rtl_uString *pustrRelativeFileURL, rtl_uString **ppustrAbsoluteFileURL ); /** Convert a system dependend path into a file URL. @param pustrSystemPath [in] A System dependent path of a file or directory. @param ppustrFileURL [out] On success it receives the file URL. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
@see osl_getSystemPathFromFileURL() */ oslFileError SAL_CALL osl_getFileURLFromSystemPath( rtl_uString *pustrSystemPath, rtl_uString **ppustrFileURL); /** Searche a full qualified system path or a file URL. @param pustrFileName [in] A system dependent path, a file URL, a file or relative directory. @param pustrSearchPath [in] A list of system paths, in which a given file has to be searched. The Notation of a path list is system dependend, e.g. on UNIX system "/usr/bin:/bin" and on Windows "C:\BIN;C:\BATCH". These paths are only for the search of a file or a relative path, otherwise it will be ignored. If pustrSearchPath is NULL or while using the search path the search failed, the function searches for a matching file in all system directories and in the directories listed in the PATH environment variable. The value of an environment variable should be used (e.g. LD_LIBRARY_PATH) if the caller is not aware of the Operating System and so doesn't know which path list delimiter to use. @param ppustrFileURL [out] On success it receives the full qualified file URL. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOTDIR not a directory
osl_File_E_NOENT no such file or directory not found
@see osl_getFileURLFromSystemPath() @see osl_getSystemPathFromFileURL() */ oslFileError SAL_CALL osl_searchFileURL( rtl_uString *pustrFileName, rtl_uString *pustrSearchPath, rtl_uString **ppustrFileURL ); /** Convert a file URL into a system dependend path. @param pustrFileURL [in] A File URL. @param ppustrSystemPath [out] On success it receives the system path. @return osl_File_E_None on success osl_File_E_INVAL the format of the parameters was not valid @see osl_getFileURLFromSystemPath() */ oslFileError SAL_CALL osl_getSystemPathFromFileURL( rtl_uString *pustrFileURL, rtl_uString **ppustrSystemPath); /** Function pointer representing the function called back from osl_abbreviateSystemPath @param ustrText [in] Text to calculate the width for @return The width of the text specified by ustrText, e.g. it can return the width in pixel or the width in character count. @see osl_abbreviateSystemPath() */ typedef sal_uInt32 (SAL_CALL *oslCalcTextWidthFunc)( rtl_uString *ustrText ); /** Abbreviate a system notation path. @param ustrSystemPath [in] The full system path to abbreviate @param pustrCompacted [out] Receives the compacted system path on output @param pfnCalcWidth [in] Function ptr that calculates the width of a string. Can be zero. @param uMaxWidth [in] Maximum width allowed that is retunrned from pfnCalcWidth. If pfnCalcWidth is zero the character count is assumed as width. @return osl_File_E_None on success
@see oslCalcTextWidthFunc */ oslFileError SAL_CALL osl_abbreviateSystemPath( rtl_uString *ustrSystemPath, rtl_uString **pustrCompacted, sal_uInt32 uMaxWidth, oslCalcTextWidthFunc pCalcWidth ); /** Set file attributes. @param pustrFileURL [in] The full qualified file URL. @param uAttributes [in] Attributes of the file to be set. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
@see osl_getFileStatus() */ oslFileError SAL_CALL osl_setFileAttributes( rtl_uString *pustrFileURL, sal_uInt64 uAttributes ); /** Set the file time. @param pustrFileURL [in] The full qualified URL of the file. @param aCreationTime [in] Creation time of the given file. @param aLastAccessTime [in] Time of the last access of the given file. @param aLastWriteTime [in] Time of the last modifying of the given file. @return osl_File_E_None on success
osl_File_E_INVAL the format of the parameters was not valid
osl_File_E_NOENT no such file or directory not found
@see osl_getFileStatus() */ oslFileError SAL_CALL osl_setFileTime( rtl_uString *pustrFileURL, const TimeValue *aCreationTime, const TimeValue *aLastAccessTime, const TimeValue *aLastWriteTime); /** Retrieves the file URL of the system's temporary directory path @param pustrTempDirURL[out] On success receives the URL of system's temporary directory path. @return osl_File_E_None on success osl_File_E_NOENT no such file or directory not found */ oslFileError SAL_CALL osl_getTempDirURL( rtl_uString **pustrTempDirURL ); /** Creates a temporary file in the directory provided by the caller or the directory returned by osl_getTempDirURL. Creates a temporary file in the directory provided by the caller or the directory returned by osl_getTempDirURL. Under UNIX Operating Systems the file will be created with read and write access for the user exclusively. If the caller requests only a handle to the open file but not the name of it, the file will be automatically removed on close else the caller is responsible for removing the file on success. @param pustrDirectoryURL [in] Specifies the full qualified URL where the temporary file should be created. If pustrDirectoryURL is 0 the path returned by osl_getTempDirURL will be used. @param pHandle [out] On success receives a handle to the open file. If pHandle is 0 the file will be closed on return, in this case ppustrTempFileURL must not be 0. @param ppustrTempFileURL [out] On success receives the full qualified URL of the temporary file. If ppustrTempFileURL is 0 the file will be automatically removed on close, in this case pHandle must not be 0. If ppustrTempFileURL is not 0 the caller receives the name of the created file and is responsible for removing the file, in this case *ppustrTempFileURL must be 0 or must point to a valid rtl_uString. @descr Description of the different pHandle, ppustrTempFileURL parameter combinations. pHandle is 0 and ppustrTempDirURL is 0 - this combination is invalid pHandle is not 0 and ppustrTempDirURL is 0 - a handle to the open file will be returned on success and the file will be automatically removed on close. pHandle is 0 and ppustrTempDirURL is not 0 - the name of the file will be returned, the caller is responsible for opening, closing and removing the file. pHandle is not 0 and ppustrTempDirURL is not 0 - a handle to the open file as well as the file name will be returned, the caller is responsible for closing and removing the file. @return osl_File_E_None on success osl_File_E_INVAL the format of the parameter is invalid osl_File_E_NOMEM not enough memory for allocating structures osl_File_E_ACCES Permission denied osl_File_E_NOENT No such file or directory osl_File_E_NOTDIR Not a directory osl_File_E_ROFS Read-only file system osl_File_E_NOSPC No space left on device osl_File_E_DQUOT Quota exceeded @see osl_getTempDirURL() */ oslFileError SAL_CALL osl_createTempFile( rtl_uString* pustrDirectoryURL, oslFileHandle* pHandle, rtl_uString** ppustrTempFileURL); #ifdef __cplusplus } #endif #endif /* _OSL_FILE_H_ */