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tst: passthrough-fuse3: xattr

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This commit is contained in:
Bill Zissimopoulos 2019-03-26 17:36:02 -07:00
parent 4e7d2fd204
commit d2381f3425
No known key found for this signature in database
GPG Key ID: 3D4F95D52C7B3EA3
3 changed files with 293 additions and 0 deletions
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34
tst/passthrough-fuse3/passthrough-fuse3.c
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@ -182,6 +182,36 @@ static int ptfs_fsync(const char *path, int datasync, struct fuse_file_info *fi)
return -1 != fsync(fd) ? 0 : -errno;
}
static int ptfs_setxattr(const char *path, const char *name, const char *value, size_t size, int flags)
{
ptfs_impl_fullpath(path);
return -1 != lsetxattr(path, name, value, size, flags) ? 0 : -errno;
}
static int ptfs_getxattr(const char *path, const char *name, char *value, size_t size)
{
ptfs_impl_fullpath(path);
int nb;
return -1 != (nb = lgetxattr(path, name, value, size)) ? nb : -errno;
}
static int ptfs_listxattr(const char *path, char *namebuf, size_t size)
{
ptfs_impl_fullpath(path);
int nb;
return -1 != (nb = llistxattr(path, namebuf, size)) ? nb : -errno;
}
static int ptfs_removexattr(const char *path, const char *name)
{
ptfs_impl_fullpath(path);
return -1 != lremovexattr(path, name) ? 0 : -errno;
}
static int ptfs_opendir(const char *path, struct fuse_file_info *fi)
{
ptfs_impl_fullpath(path);
@ -262,6 +292,10 @@ static struct fuse_operations ptfs_ops =
.statfs = ptfs_statfs,
.release = ptfs_release,
.fsync = ptfs_fsync,
.setxattr = ptfs_setxattr,
.getxattr = ptfs_getxattr,
.listxattr = ptfs_listxattr,
.removexattr = ptfs_removexattr,
.opendir = ptfs_opendir,
.readdir = ptfs_readdir,
.releasedir = ptfs_releasedir,

254
tst/passthrough-fuse3/winposix.c
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@ -33,6 +33,33 @@
#include <fuse.h>
#include "winposix.h"
#pragma comment(lib, "ntdll.lib")
typedef struct _FILE_GET_EA_INFORMATION
{
ULONG NextEntryOffset;
UCHAR EaNameLength;
CHAR EaName[1];
} FILE_GET_EA_INFORMATION, *PFILE_GET_EA_INFORMATION;
NTSYSAPI NTSTATUS NTAPI NtQueryEaFile(
IN HANDLE FileHandle,
OUT PIO_STATUS_BLOCK IoStatusBlock,
OUT PVOID Buffer,
IN ULONG Length,
IN BOOLEAN ReturnSingleEntry,
IN PVOID EaList OPTIONAL,
IN ULONG EaListLength,
IN PULONG EaIndex OPTIONAL,
IN BOOLEAN RestartScan);
NTSYSAPI NTSTATUS NTAPI NtSetEaFile(
IN HANDLE FileHandle,
OUT PIO_STATUS_BLOCK IoStatusBlock,
IN PVOID EaBuffer,
IN ULONG EaBufferSize);
#define NEXT_EA(Ea, EaEnd) \
(0 != (Ea)->NextEntryOffset ? (PVOID)((PUINT8)(Ea) + (Ea)->NextEntryOffset) : (EaEnd))
struct _DIR
{
HANDLE h, fh;
@ -419,6 +446,233 @@ int rename(const char *oldpath, const char *newpath)
return 0;
}
static int lsetea(const char *path, PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength)
{
HANDLE h = CreateFileA(path,
FILE_WRITE_EA | SYNCHRONIZE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
0,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
if (INVALID_HANDLE_VALUE == h)
return error();
IO_STATUS_BLOCK Iosb;
NTSTATUS Status = NtSetEaFile(h, &Iosb, Ea, EaLength);
CloseHandle(h);
if (!NT_SUCCESS(Status))
switch (Status)
{
case STATUS_INVALID_EA_NAME:
case STATUS_EA_LIST_INCONSISTENT:
case STATUS_EA_CORRUPT_ERROR:
case STATUS_NONEXISTENT_EA_ENTRY:
case STATUS_NO_MORE_EAS:
case STATUS_NO_EAS_ON_FILE:
errno = EINVAL;
return -1;
default:
SetLastError(RtlNtStatusToDosError(Status));
return error();
}
return 0;
}
static int lgetea(const char *path,
PFILE_GET_EA_INFORMATION GetEa, ULONG GetEaLength,
PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength)
{
HANDLE h = CreateFileA(path,
FILE_READ_EA | SYNCHRONIZE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
0,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
if (INVALID_HANDLE_VALUE == h)
return error();
IO_STATUS_BLOCK Iosb;
NTSTATUS Status = NtQueryEaFile(h, &Iosb, Ea, EaLength, FALSE, GetEa, GetEaLength, 0, TRUE);
CloseHandle(h);
if (!NT_SUCCESS(Status))
switch (Status)
{
case STATUS_INVALID_EA_NAME:
case STATUS_EA_LIST_INCONSISTENT:
case STATUS_EA_CORRUPT_ERROR:
case STATUS_NONEXISTENT_EA_ENTRY:
case STATUS_NO_MORE_EAS:
errno = EINVAL;
return -1;
case STATUS_NO_EAS_ON_FILE:
if (0 == GetEa)
return 0;
else
{
errno = ENODATA;
return -1;
}
default:
SetLastError(RtlNtStatusToDosError(Status));
return error();
}
else if (0 == GetEa &&
(FIELD_OFFSET(FILE_FULL_EA_INFORMATION, EaName) > Iosb.Information || 0 == Ea->EaValueLength))
{
errno = ENODATA;
return -1;
}
return (ULONG)Iosb.Information;
}
int lsetxattr(const char *path, const char *name, const void *value, size_t size, int flags)
{
union
{
FILE_FULL_EA_INFORMATION V;
UINT8 B[1024];
} EaBuf;
PFILE_FULL_EA_INFORMATION Ea = &EaBuf.V;
ULONG EaLength;
size_t namelen = strlen(name);
if (254 < namelen || 0xffff < size)
{
errno = EINVAL;
return -1;
}
EaLength = (ULONG)(FIELD_OFFSET(FILE_FULL_EA_INFORMATION, EaName) + namelen + 1 + size);
if (sizeof EaBuf < EaLength)
{
Ea = malloc(EaLength); /* sets errno */
if (0 == Ea)
return -1;
}
memset(Ea, 0, sizeof(FILE_FULL_EA_INFORMATION));
Ea->EaNameLength = (UCHAR)namelen;
Ea->EaValueLength = (USHORT)size;
memcpy(Ea->EaName, name, namelen + 1);
memcpy(Ea->EaName + namelen + 1, value, size);
int res = lsetea(path, Ea, EaLength); /* sets errno */
if (&EaBuf.V != Ea)
free(Ea);
return res;
}
int lgetxattr(const char *path, const char *name, void *value, size_t size0)
{
size_t size = 0 == size0 || 0xffff < size0 ? 0xffff : size0;
union
{
FILE_GET_EA_INFORMATION V;
UINT8 B[FIELD_OFFSET(FILE_GET_EA_INFORMATION, EaName) + 255];
} GetEaBuf;
PFILE_GET_EA_INFORMATION GetEa = &GetEaBuf.V;
union
{
FILE_FULL_EA_INFORMATION V;
UINT8 B[1024];
} EaBuf;
PFILE_FULL_EA_INFORMATION Ea = &EaBuf.V;
ULONG GetEaLength, EaLength;
size_t namelen = strlen(name);
if (254 < namelen)
{
errno = EINVAL;
return -1;
}
EaLength = (ULONG)(FIELD_OFFSET(FILE_FULL_EA_INFORMATION, EaName) + namelen + 1 + size);
if (sizeof EaBuf < EaLength)
{
Ea = malloc(EaLength); /* sets errno */
if (0 == Ea)
return -1;
}
GetEaLength = (ULONG)(FIELD_OFFSET(FILE_GET_EA_INFORMATION, EaName) + namelen + 1);
memset(GetEa, 0, sizeof(FILE_GET_EA_INFORMATION));
GetEa->EaNameLength = (UCHAR)namelen;
memcpy(GetEa->EaName, name, namelen + 1);
int res = lgetea(path, GetEa, GetEaLength, Ea, EaLength);
if (0 < res)
{
res = Ea->EaValueLength;
if (0 == size0)
;
else if (res <= size0)
memcpy(value, Ea->EaName + Ea->EaNameLength + 1, res);
else
{
errno = ERANGE;
res = -1;
}
}
else if (0 == res) /* should not happen! */
{
}
if (&EaBuf.V != Ea)
free(Ea);
return res;
}
int llistxattr(const char *path, char *namebuf, size_t size)
{
PFILE_FULL_EA_INFORMATION Ea = 0;
ULONG EaLength;
EaLength = (ULONG)(FIELD_OFFSET(FILE_FULL_EA_INFORMATION, EaName) + 254 + 1 + 0xffff);
Ea = malloc(EaLength); /* sets errno */
if (0 == Ea)
return -1;
int res = lgetea(path, 0, 0, Ea, EaLength);
if (0 < res)
{
PFILE_FULL_EA_INFORMATION EaEnd = (PVOID)((PUINT8)Ea + res);
res = 0;
for (PFILE_FULL_EA_INFORMATION EaPtr = Ea; EaEnd > EaPtr; EaPtr = NEXT_EA(EaPtr, EaEnd))
res += EaPtr->EaNameLength + 1;
if (0 == size)
;
else if (res <= size)
{
char *p = namebuf;
for (PFILE_FULL_EA_INFORMATION EaPtr = Ea; EaEnd > EaPtr; EaPtr = NEXT_EA(EaPtr, EaEnd))
{
memcpy(p, EaPtr->EaName, EaPtr->EaNameLength + 1);
p += EaPtr->EaNameLength + 1;
}
}
else
{
errno = ERANGE;
res = -1;
}
}
free(Ea);
return res;
}
int lremovexattr(const char *path, const char *name)
{
return lsetxattr(path, name, 0, 0, 0);
}
int mkdir(const char *path, fuse_mode_t mode)
{
if (!CreateDirectoryA(path, 0/* default security */))

5
tst/passthrough-fuse3/winposix.h
View File

@ -64,6 +64,11 @@ int setcrtime(const char *path, const struct fuse_timespec *tv);
int unlink(const char *path);
int rename(const char *oldpath, const char *newpath);
int lsetxattr(const char *path, const char *name, const void *value, size_t size, int flags);
int lgetxattr(const char *path, const char *name, void *value, size_t size);
int llistxattr(const char *path, char *namebuf, size_t size);
int lremovexattr(const char *path, const char *name);
int mkdir(const char *path, fuse_mode_t mode);
int rmdir(const char *path);