Public/winfsp
1
0
Fork 0
mirror of https://github.com/winfsp/winfsp.git synced 2025-07-03 09:22:57 -05:00
Code Issues Packages Projects Releases Wiki Activity

dll: fuse: extended attributes support

Browse Source
This commit is contained in:
Bill Zissimopoulos
2019-03-20 14:32:00 -07:00
parent c23aabe533
commit 8c6d037332
6 changed files with 152 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

137
src/dll/fuse/fuse_intf.c
View File

@ -666,6 +666,9 @@ static NTSTATUS fsp_fuse_intf_GetReparsePointEx(FSP_FILE_SYSTEM *FileSystem,
static NTSTATUS fsp_fuse_intf_GetReparsePointByName(
FSP_FILE_SYSTEM *FileSystem, PVOID Context,
PWSTR FileName, BOOLEAN IsDirectory, PVOID Buffer, PSIZE_T PSize);
static NTSTATUS fsp_fuse_intf_SetEaEntry(
FSP_FILE_SYSTEM *FileSystem, PVOID Context,
PFILE_FULL_EA_INFORMATION SingleEa);
static NTSTATUS fsp_fuse_intf_GetVolumeInfo(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_VOLUME_INFO *VolumeInfo)
@ -737,6 +740,7 @@ exit:
static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
PWSTR FileName, UINT32 CreateOptions, UINT32 GrantedAccess,
UINT32 FileAttributes, PSECURITY_DESCRIPTOR SecurityDescriptor, UINT64 AllocationSize,
PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength,
PVOID *PFileDesc, FSP_FSCTL_FILE_INFO *FileInfo)
{
struct fuse *f = FileSystem->UserContext;
@ -750,6 +754,16 @@ static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
int err;
NTSTATUS Result;
if (0 != Ea)
{
if (0 == f->ops.listxattr || 0 == f->ops.getxattr ||
0 == f->ops.setxattr || 0 == f->ops.removexattr)
{
Result = STATUS_EAS_NOT_SUPPORTED;
goto exit;
}
}
filedesc = MemAlloc(sizeof *filedesc);
if (0 == filedesc)
{
@ -849,6 +863,13 @@ static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
goto exit;
}
if (0 != Ea)
{
Result = FspFileSystemEnumerateEa(FileSystem,
fsp_fuse_intf_SetEaEntry, contexthdr->PosixPath, Ea, EaLength);
if (!NT_SUCCESS(Result))
goto exit;
}
/*
* Ignore fuse_file_info::direct_io, fuse_file_info::keep_cache.
* NOTE: Originally WinFsp dit not support disabling the cache manager
@ -1001,6 +1022,7 @@ exit:
static NTSTATUS fsp_fuse_intf_Overwrite(FSP_FILE_SYSTEM *FileSystem,
PVOID FileDesc, UINT32 FileAttributes, BOOLEAN ReplaceFileAttributes, UINT64 AllocationSize,
PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength,
FSP_FSCTL_FILE_INFO *FileInfo)
{
struct fuse *f = FileSystem->UserContext;
@ -1013,6 +1035,29 @@ static NTSTATUS fsp_fuse_intf_Overwrite(FSP_FILE_SYSTEM *FileSystem,
if (filedesc->IsDirectory || filedesc->IsReparsePoint)
return STATUS_ACCESS_DENIED;
if (0 != Ea)
{
char names[3 * 1024];
int namesize;
if (0 == f->ops.listxattr || 0 == f->ops.getxattr ||
0 == f->ops.setxattr || 0 == f->ops.removexattr)
return STATUS_EAS_NOT_SUPPORTED;
namesize = f->ops.listxattr(filedesc->PosixPath, names, sizeof names);
if (0 < namesize)
for (char *p = names, *endp = p + namesize; endp > p; p += namesize)
{
namesize = lstrlenA(p) + 1;
f->ops.removexattr(filedesc->PosixPath, p);
}
Result = FspFileSystemEnumerateEa(FileSystem,
fsp_fuse_intf_SetEaEntry, filedesc->PosixPath, Ea, EaLength);
if (!NT_SUCCESS(Result))
return Result;
}
if (0 != f->ops.ftruncate)
{
memset(&fi, 0, sizeof fi);
@ -2173,14 +2218,97 @@ static NTSTATUS fsp_fuse_intf_Control(FSP_FILE_SYSTEM *FileSystem,
return fsp_fuse_ntstatus_from_errno(f->env, err);
}
static NTSTATUS fsp_fuse_intf_GetEa(FSP_FILE_SYSTEM *FileSystem,
PVOID FileDesc,
PFILE_FULL_EA_INFORMATION Ea0, ULONG EaLength, PULONG PBytesTransferred)
{
struct fuse *f = FileSystem->UserContext;
struct fsp_fuse_file_desc *filedesc = FileDesc;
char names[3 * 1024];
int namesize, valuesize;
PFILE_FULL_EA_INFORMATION Ea = Ea0, PrevEa = 0;
PUINT8 EaEnd = (PUINT8)Ea + EaLength, EaValue;
if (0 == f->ops.listxattr || 0 == f->ops.getxattr)
return STATUS_INVALID_DEVICE_REQUEST;
namesize = f->ops.listxattr(filedesc->PosixPath, names, sizeof names);
if (0 >= namesize)
{
*PBytesTransferred = 0;
return fsp_fuse_ntstatus_from_errno(f->env, namesize);
}
for (char *p = names, *endp = p + namesize; endp > p; p += namesize)
{
namesize = lstrlenA(p) + 1;
EaValue = (PUINT8)Ea + FIELD_OFFSET(FILE_FULL_EA_INFORMATION, EaName) + namesize;
if (EaValue >= EaEnd)
/* if there is no space (at least 1 byte) for a value bail out */
break;
valuesize = f->ops.getxattr(filedesc->PosixPath, p, EaValue, EaEnd - EaValue);
if (0 >= valuesize)
continue;
Ea->NextEntryOffset = 0;
Ea->Flags = 0;
Ea->EaNameLength = namesize - 1;
Ea->EaValueLength = valuesize;
memcpy(Ea->EaName, p, namesize);
if (0 != PrevEa)
PrevEa->NextEntryOffset = (ULONG)((PUINT8)Ea - (PUINT8)PrevEa);
PrevEa = Ea;
*PBytesTransferred = (ULONG)((PUINT8)EaValue - (PUINT8)Ea0 + valuesize);
Ea = (PVOID)((PUINT8)EaValue + FSP_FSCTL_ALIGN_UP(valuesize, sizeof(ULONG)));
}
return STATUS_SUCCESS;
}
static NTSTATUS fsp_fuse_intf_SetEaEntry(
FSP_FILE_SYSTEM *FileSystem, PVOID Context,
PFILE_FULL_EA_INFORMATION SingleEa)
{
struct fuse *f = FileSystem->UserContext;
const char *PosixPath = Context;
int err;
if (0 != SingleEa->EaValueLength)
err = f->ops.setxattr(PosixPath,
SingleEa->EaName, SingleEa->EaName + SingleEa->EaNameLength + 1, SingleEa->EaValueLength, 0);
else
err = f->ops.removexattr(PosixPath,
SingleEa->EaName);
return fsp_fuse_ntstatus_from_errno(f->env, err);
}
static NTSTATUS fsp_fuse_intf_SetEa(FSP_FILE_SYSTEM *FileSystem,
PVOID FileDesc,
PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength)
{
struct fuse *f = FileSystem->UserContext;
struct fsp_fuse_file_desc *filedesc = FileDesc;
if (0 == f->ops.setxattr || 0 == f->ops.removexattr)
return STATUS_INVALID_DEVICE_REQUEST;
return FspFileSystemEnumerateEa(FileSystem,
fsp_fuse_intf_SetEaEntry, filedesc->PosixPath, Ea, EaLength);
}
FSP_FILE_SYSTEM_INTERFACE fsp_fuse_intf =
{
fsp_fuse_intf_GetVolumeInfo,
fsp_fuse_intf_SetVolumeLabel,
fsp_fuse_intf_GetSecurityByName,
fsp_fuse_intf_Create,
0,
fsp_fuse_intf_Open,
fsp_fuse_intf_Overwrite,
0,
fsp_fuse_intf_Cleanup,
fsp_fuse_intf_Close,
fsp_fuse_intf_Read,
@ -2201,6 +2329,11 @@ FSP_FILE_SYSTEM_INTERFACE fsp_fuse_intf =
0,
fsp_fuse_intf_GetDirInfoByName,
fsp_fuse_intf_Control,
0,
fsp_fuse_intf_Create,
fsp_fuse_intf_Overwrite,
fsp_fuse_intf_GetEa,
fsp_fuse_intf_SetEa,
};
/*