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dll: fuse: refactor fuse_op to fuse_intf
This commit is contained in:
Bill Zissimopoulos
353
src/dll/fuse/fuseintf.c
Normal file
353
src/dll/fuse/fuseintf.c
Normal file
@@ -0,0 +1,353 @@
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/**
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* @file dll/fuse/fuseintf.c
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*
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* @copyright 2015-2016 Bill Zissimopoulos
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*/
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/*
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* This file is part of WinFsp.
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*
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* You can redistribute it and/or modify it under the terms of the
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* GNU Affero General Public License version 3 as published by the
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* Free Software Foundation.
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*
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* Licensees holding a valid commercial license may use this file in
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* accordance with the commercial license agreement provided with the
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* software.
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*/
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#include <dll/fuse/library.h>
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static NTSTATUS fsp_fuse_intf_set_context(FSP_FILE_SYSTEM *FileSystem, HANDLE Token)
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{
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struct fuse_context *context;
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UINT32 Uid = -1, Gid = -1;
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union
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{
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TOKEN_USER V;
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UINT8 B[128];
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} UserInfoBuf;
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PTOKEN_USER UserInfo = &UserInfoBuf.V;
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union
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{
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TOKEN_PRIMARY_GROUP V;
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UINT8 B[128];
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} GroupInfoBuf;
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PTOKEN_PRIMARY_GROUP GroupInfo = &GroupInfoBuf.V;
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DWORD Size;
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NTSTATUS Result;
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context = fsp_fuse_get_context(0);
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if (0 == context)
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{
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Result = STATUS_INSUFFICIENT_RESOURCES;
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goto exit;
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}
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if (0 != Token)
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{
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if (!GetTokenInformation(Token, TokenUser, UserInfo, sizeof UserInfoBuf, &Size))
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{
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if (ERROR_INSUFFICIENT_BUFFER != GetLastError())
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{
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Result = FspNtStatusFromWin32(GetLastError());
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goto exit;
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}
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UserInfo = MemAlloc(Size);
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if (0 == UserInfo)
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{
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Result = STATUS_INSUFFICIENT_RESOURCES;
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goto exit;
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}
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if (!GetTokenInformation(Token, TokenUser, UserInfo, Size, &Size))
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{
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Result = FspNtStatusFromWin32(GetLastError());
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goto exit;
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}
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}
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if (!GetTokenInformation(Token, TokenPrimaryGroup, GroupInfo, sizeof GroupInfoBuf, &Size))
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{
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if (ERROR_INSUFFICIENT_BUFFER != GetLastError())
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{
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Result = FspNtStatusFromWin32(GetLastError());
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goto exit;
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}
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GroupInfo = MemAlloc(Size);
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if (0 == UserInfo)
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{
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Result = STATUS_INSUFFICIENT_RESOURCES;
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goto exit;
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}
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if (!GetTokenInformation(Token, TokenPrimaryGroup, GroupInfo, Size, &Size))
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{
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Result = FspNtStatusFromWin32(GetLastError());
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goto exit;
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}
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}
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Result = FspPosixMapSidToUid(UserInfo->User.Sid, &Uid);
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if (!NT_SUCCESS(Result))
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goto exit;
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Result = FspPosixMapSidToUid(GroupInfo->PrimaryGroup, &Gid);
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if (!NT_SUCCESS(Result))
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goto exit;
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}
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context->fuse = FileSystem->UserContext;
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context->uid = Uid;
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context->gid = Gid;
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Result = STATUS_SUCCESS;
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exit:
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if (UserInfo != &UserInfoBuf.V)
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MemFree(UserInfo);
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if (GroupInfo != &GroupInfoBuf.V)
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MemFree(GroupInfo);
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return Result;
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}
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NTSTATUS fsp_fuse_intf_GetVolumeInfo(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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FSP_FSCTL_VOLUME_INFO *VolumeInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_SetVolumeLabel(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PWSTR VolumeLabel,
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FSP_FSCTL_VOLUME_INFO *VolumeInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_GetSecurityByName(FSP_FILE_SYSTEM *FileSystem,
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PWSTR FileName, PUINT32 PFileAttributes,
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PSECURITY_DESCRIPTOR SecurityDescriptorBuf, SIZE_T *PSecurityDescriptorSize)
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{
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struct fuse *f = FileSystem->UserContext;
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char *PosixPath = 0;
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PSECURITY_DESCRIPTOR SecurityDescriptor = 0;
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SIZE_T SecurityDescriptorSize;
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struct fuse_stat stbuf;
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int err;
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NTSTATUS Result;
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if (0 == f->ops.getattr)
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return STATUS_INVALID_DEVICE_REQUEST;
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Result = FspPosixMapWindowsToPosixPath(FileName, &PosixPath);
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if (!NT_SUCCESS(Result))
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goto exit;
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memset(&stbuf, 0, sizeof stbuf);
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err = f->ops.getattr(PosixPath, (void *)&stbuf);
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if (0 != err)
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{
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Result = fsp_fuse_ntstatus_from_errno(f->env, err);
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goto exit;
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}
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if (0 != PFileAttributes)
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*PFileAttributes = (stbuf.st_mode & 0040000) ?
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FILE_ATTRIBUTE_DIRECTORY : FILE_ATTRIBUTE_NORMAL;
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if (0 != PSecurityDescriptorSize)
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{
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Result = FspPosixMapPermissionsToSecurityDescriptor(
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stbuf.st_uid, stbuf.st_gid, stbuf.st_mode, &SecurityDescriptor);
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if (!NT_SUCCESS(Result))
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goto exit;
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SecurityDescriptorSize = GetSecurityDescriptorLength(SecurityDescriptor);
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if (SecurityDescriptorSize > *PSecurityDescriptorSize)
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{
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*PSecurityDescriptorSize = SecurityDescriptorSize;
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Result = STATUS_BUFFER_OVERFLOW;
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goto exit;
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}
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*PSecurityDescriptorSize = SecurityDescriptorSize;
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if (0 != SecurityDescriptorBuf)
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memcpy(SecurityDescriptorBuf, SecurityDescriptor, SecurityDescriptorSize);
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}
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Result = STATUS_SUCCESS;
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exit:
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if (0 != SecurityDescriptor)
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FspDeleteSecurityDescriptor(SecurityDescriptor,
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FspPosixMapPermissionsToSecurityDescriptor);
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if (0 != PosixPath)
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FspPosixDeletePath(PosixPath);
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return Result;
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}
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NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PWSTR FileName, BOOLEAN CaseSensitive, UINT32 CreateOptions,
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UINT32 FileAttributes, PSECURITY_DESCRIPTOR SecurityDescriptor, UINT64 AllocationSize,
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PVOID *PFileNode, FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_Open(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PWSTR FileName, BOOLEAN CaseSensitive, UINT32 CreateOptions,
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PVOID *PFileNode, FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_Overwrite(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, UINT32 FileAttributes, BOOLEAN ReplaceFileAttributes,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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VOID fsp_fuse_intf_Cleanup(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, PWSTR FileName, BOOLEAN Delete)
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{
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}
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VOID fsp_fuse_intf_Close(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode)
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{
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}
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NTSTATUS fsp_fuse_intf_Read(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, PVOID Buffer, UINT64 Offset, ULONG Length,
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PULONG PBytesTransferred)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_Write(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, PVOID Buffer, UINT64 Offset, ULONG Length,
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BOOLEAN WriteToEndOfFile, BOOLEAN ConstrainedIo,
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PULONG PBytesTransferred, FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_Flush(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_GetFileInfo(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_SetBasicInfo(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, UINT32 FileAttributes,
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UINT64 CreationTime, UINT64 LastAccessTime, UINT64 LastWriteTime,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_SetAllocationSize(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, UINT64 AllocationSize,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_SetFileSize(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, UINT64 FileSize,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_CanDelete(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, PWSTR FileName)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_Rename(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode,
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PWSTR FileName, PWSTR NewFileName, BOOLEAN ReplaceIfExists)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_GetSecurity(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode,
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PSECURITY_DESCRIPTOR SecurityDescriptor, SIZE_T *PSecurityDescriptorSize)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_SetSecurity(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode,
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SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR SecurityDescriptor)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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NTSTATUS fsp_fuse_intf_ReadDirectory(FSP_FILE_SYSTEM *FileSystem,
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FSP_FSCTL_TRANSACT_REQ *Request,
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PVOID FileNode, PVOID Buffer, UINT64 Offset, ULONG Length,
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PWSTR Pattern,
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PULONG PBytesTransferred)
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{
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return STATUS_INVALID_DEVICE_REQUEST;
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}
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FSP_FILE_SYSTEM_INTERFACE fsp_fuse_intf =
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{
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fsp_fuse_intf_GetVolumeInfo,
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fsp_fuse_intf_SetVolumeLabel,
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fsp_fuse_intf_GetSecurityByName,
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fsp_fuse_intf_Create,
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fsp_fuse_intf_Open,
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fsp_fuse_intf_Overwrite,
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fsp_fuse_intf_Cleanup,
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fsp_fuse_intf_Close,
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fsp_fuse_intf_Read,
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fsp_fuse_intf_Write,
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fsp_fuse_intf_Flush,
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fsp_fuse_intf_GetFileInfo,
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fsp_fuse_intf_SetBasicInfo,
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fsp_fuse_intf_SetAllocationSize,
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fsp_fuse_intf_SetFileSize,
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fsp_fuse_intf_CanDelete,
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fsp_fuse_intf_Rename,
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fsp_fuse_intf_GetSecurity,
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fsp_fuse_intf_SetSecurity,
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fsp_fuse_intf_ReadDirectory,
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};
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