On Feb 4 12:08, Corinna Vinschen via Cygwin wrote:
> $ cat > mk-dev-nfs.c <<EOF
> [...]
Copy/Paste error, try this one:
#include <stdio.h>
#include <windows.h>
#include <winternl.h>
typedef struct {
DWORD ReparseTag;
WORD ReparseDataLength;
WORD Reserved;
struct {
BYTE DataBuffer[1];
} GenericReparseBuffer;
struct {
ULONGLONG Type;
union {
struct {
ULONG Major;
ULONG Minor;
} Device;
WCHAR LnkBuffer[1];
};
} NfsReparseBuffer;
} MY_REPARSE_DATA_BUFFER, *MY_PREPARSE_DATA_BUFFER;
#define NFS_SPECFILE_LNK 0x00000000014B4E4CL
#define NFS_SPECFILE_CHR 0x0000000000524843L
#define NFS_SPECFILE_BLK 0x00000000004B4C42L
#define NFS_SPECFILE_FIFO 0x000000004F464946L
#define NFS_SPECFILE_SOCK 0x000000004B434F53L
int
main (int argc, char **argv)
{
HANDLE fh;
char buf[65536];
DWORD size_ret;
MY_PREPARSE_DATA_BUFFER rp;
if (argc < 3)
{
fprintf (stderr, "usage: %s <name> b|c|f|s [major] [minor]\n", argv[0]);
return 1;
}
fh = CreateFile (argv[1],
GENERIC_WRITE,
0,
NULL,
CREATE_ALWAYS,
FILE_FLAG_BACKUP_SEMANTICS
| FILE_FLAG_OPEN_REPARSE_POINT,
NULL);
if (fh == INVALID_HANDLE_VALUE)
{
fprintf (stderr, "CreateFile: %d\n", GetLastError ());
return 1;
}
rp = (MY_PREPARSE_DATA_BUFFER) buf;
rp->ReparseTag = IO_REPARSE_TAG_NFS;
rp->ReparseDataLength = sizeof (ULONGLONG);
switch (argv[2][0])
{
case 'b':
case 'c':
if (argc != 5)
{
fprintf (stderr, "usage: %s <name> b|c|f|s [major] [minor]\n",
argv[0]);
return 1;
}
rp->ReparseDataLength += 2 * sizeof (ULONG);
rp->NfsReparseBuffer.Type = argv[2][0] == 'b' ?
NFS_SPECFILE_BLK
: NFS_SPECFILE_CHR;
rp->NfsReparseBuffer.Device.Major = strtoul (argv[3], NULL, 0);
rp->NfsReparseBuffer.Device.Minor = strtoul (argv[4], NULL, 0);
break;
case 'f':
rp->NfsReparseBuffer.Type = NFS_SPECFILE_FIFO;
break;
case 's':
rp->NfsReparseBuffer.Type = NFS_SPECFILE_SOCK;
break;
}
if (! DeviceIoControl (fh, FSCTL_SET_REPARSE_POINT,
(LPVOID) buf,
REPARSE_GUID_DATA_BUFFER_HEADER_SIZE
+ rp->ReparseDataLength,
NULL, 0, &size_ret, NULL))
{
fprintf (stderr, "DeviceIoControl: %d\n", GetLastError ());
CloseHandle (fh);
DeleteFile (argv[1]);
return 1;
}
CloseHandle (fh);
return 0;
}
--
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