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compat.c
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compat.c
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/*
BAREOS® - Backup Archiving REcovery Open Sourced
Copyright (C) 2004-2010 Free Software Foundation Europe e.V.
Copyright (C) 2011-2012 Planets Communications B.V.
Copyright (C) 2013-2013 Bareos GmbH & Co. KG
This program is Free Software; you can redistribute it and/or
modify it under the terms of version three of the GNU Affero General Public
License as published by the Free Software Foundation and included
in the file LICENSE.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
// -*- Mode: C++ -*-
// compat.cpp -- compatibilty layer to make bareos-fd run
// natively under windows
//
// Copyright transferred from Raider Solutions, Inc to
// Kern Sibbald and John Walker by express permission.
//
// Author : Christopher S. Hull
// Created On : Sat Jan 31 15:55:00 2004
#include "bareos.h"
#include "compat.h"
#include "jcr.h"
#include "findlib/find.h"
/* Note, if you want to see what Windows variables and structures
* are defined, bareos.h includes <windows.h>, which is found in:
*
* cross-tools/mingw32/mingw32/include
* or
* cross-tools/mingw-w64/x86_64-pc-mingw32/include
*
* depending on whether we are building the 32 bit version or
* the 64 bit version.
*/
static const int dbglvl = 500;
#define b_errno_win32 (1<<29)
#define MAX_PATHLENGTH 1024
/**
UTF-8 to UCS2 path conversion is expensive,
so we cache the conversion. During backup the
conversion is called 3 times (lstat, attribs, open),
by using the cache this is reduced to 1 time
*/
static POOLMEM *g_pWin32ConvUTF8Cache = NULL;
static POOLMEM *g_pWin32ConvUCS2Cache = NULL;
static DWORD g_dwWin32ConvUTF8strlen = 0;
static pthread_mutex_t Win32Convmutex = PTHREAD_MUTEX_INITIALIZER;
static t_pVSSPathConvert g_pVSSPathConvert;
static t_pVSSPathConvertW g_pVSSPathConvertW;
/* Forward referenced functions */
static const char *errorString(void);
void SetVSSPathConvert(t_pVSSPathConvert pPathConvert, t_pVSSPathConvertW pPathConvertW)
{
g_pVSSPathConvert = pPathConvert;
g_pVSSPathConvertW = pPathConvertW;
}
static void Win32ConvInitCache()
{
if (g_pWin32ConvUTF8Cache) {
return;
}
g_pWin32ConvUTF8Cache = get_pool_memory(PM_FNAME);
g_pWin32ConvUCS2Cache = get_pool_memory(PM_FNAME);
}
void Win32ConvCleanupCache()
{
P(Win32Convmutex);
if (g_pWin32ConvUTF8Cache) {
free_pool_memory(g_pWin32ConvUTF8Cache);
g_pWin32ConvUTF8Cache = NULL;
}
if (g_pWin32ConvUCS2Cache) {
free_pool_memory(g_pWin32ConvUCS2Cache);
g_pWin32ConvUCS2Cache = NULL;
}
g_dwWin32ConvUTF8strlen = 0;
V(Win32Convmutex);
}
/* to allow the usage of the original version in this file here */
#undef fputs
//#define USE_WIN32_COMPAT_IO 1
#define USE_WIN32_32KPATHCONVERSION 1
extern DWORD g_platform_id;
extern DWORD g_MinorVersion;
/* From Microsoft SDK (KES) is the diff between Jan 1 1601 and Jan 1 1970 */
#ifdef HAVE_MINGW
#define WIN32_FILETIME_ADJUST 0x19DB1DED53E8000ULL
#else
#define WIN32_FILETIME_ADJUST 0x19DB1DED53E8000I64
#endif
#define WIN32_FILETIME_SCALE 10000000 // 100ns/second
/**
* Convert from UTF-8 to VSS Windows path/file
* Used by compatibility layer for Unix system calls
*/
static void conv_unix_to_vss_win32_path(const char *name, char *win32_name, DWORD dwSize)
{
const char *fname = name;
char *tname = win32_name;
Dmsg0(dbglvl, "Enter convert_unix_to_win32_path\n");
if (IsPathSeparator(name[0]) &&
IsPathSeparator(name[1]) &&
name[2] == '.' &&
IsPathSeparator(name[3])) {
*win32_name++ = '\\';
*win32_name++ = '\\';
*win32_name++ = '.';
*win32_name++ = '\\';
name += 4;
} else if (g_platform_id != VER_PLATFORM_WIN32_WINDOWS &&
g_pVSSPathConvert == NULL) {
/* allow path to be 32767 bytes */
*win32_name++ = '\\';
*win32_name++ = '\\';
*win32_name++ = '?';
*win32_name++ = '\\';
}
while (*name) {
/** Check for Unix separator and convert to Win32 */
if (name[0] == '/' && name[1] == '/') { /* double slash? */
name++; /* yes, skip first one */
}
if (*name == '/') {
*win32_name++ = '\\'; /* convert char */
/* If Win32 separator that is "quoted", remove quote */
} else if (*name == '\\' && name[1] == '\\') {
*win32_name++ = '\\';
name++; /* skip first \ */
} else {
*win32_name++ = *name; /* copy character */
}
name++;
}
/** Strip any trailing slash, if we stored something
* but leave "c:\" with backslash (root directory case
*/
if (*fname != 0 && win32_name[-1] == '\\' && strlen (fname) != 3) {
win32_name[-1] = 0;
} else {
*win32_name = 0;
}
/** here we convert to VSS specific file name which
can get longer because VSS will make something like
\\\\?\\GLOBALROOT\\Device\\HarddiskVolumeShadowCopy1\\bareos\\uninstall.exe
from c:\bareos\uninstall.exe
*/
Dmsg1(dbglvl, "path=%s\n", tname);
if (g_pVSSPathConvert != NULL) {
POOLMEM *pszBuf = get_pool_memory (PM_FNAME);
pszBuf = check_pool_memory_size(pszBuf, dwSize);
bstrncpy(pszBuf, tname, strlen(tname)+1);
g_pVSSPathConvert(pszBuf, tname, dwSize);
free_pool_memory(pszBuf);
}
Dmsg1(dbglvl, "Leave cvt_u_to_win32_path path=%s\n", tname);
}
/** Conversion of a Unix filename to a Win32 filename */
void unix_name_to_win32(POOLMEM **win32_name, char *name)
{
/* One extra byte should suffice, but we double it */
/* add MAX_PATH bytes for VSS shadow copy name */
DWORD dwSize = 2*strlen(name)+MAX_PATH;
*win32_name = check_pool_memory_size(*win32_name, dwSize);
conv_unix_to_vss_win32_path(name, *win32_name, dwSize);
}
/**
* This function expects an UCS-encoded standard wchar_t in pszUCSPath and
* will complete the input path to an absolue path of the form \\?\c:\path\file
*
* With this trick, it is possible to have 32K characters long paths.
*
* Optionally one can use pBIsRawPath to determine id pszUCSPath contains a path
* to a raw windows partition.
*
* created 02/27/2006 Thorsten Engel
*/
static POOLMEM*
make_wchar_win32_path(POOLMEM *pszUCSPath, BOOL *pBIsRawPath /*= NULL*/)
{
Dmsg0(dbglvl, "Enter wchar_win32_path\n");
if (pBIsRawPath) {
*pBIsRawPath = FALSE; /* Initialize, set later */
}
if (!p_GetCurrentDirectoryW) {
Dmsg0(dbglvl, "Leave wchar_win32_path no change \n");
return pszUCSPath;
}
wchar_t *name = (wchar_t *)pszUCSPath;
/* if it has already the desired form, exit without changes */
if (wcslen(name) > 3 && wcsncmp(name, L"\\\\?\\", 4) == 0) {
Dmsg0(dbglvl, "Leave wchar_win32_path no change \n");
return pszUCSPath;
}
wchar_t *pwszBuf = (wchar_t *)get_pool_memory(PM_FNAME);
wchar_t *pwszCurDirBuf = (wchar_t *)get_pool_memory(PM_FNAME);
DWORD dwCurDirPathSize = 0;
/* get buffer with enough size (name+max 6. wchars+1 null terminator */
DWORD dwBufCharsNeeded = (wcslen(name)+7);
pwszBuf = (wchar_t *)check_pool_memory_size((POOLMEM *)pwszBuf, dwBufCharsNeeded*sizeof(wchar_t));
/* add \\?\ to support 32K long filepaths
it is important to make absolute paths, so we add drive and
current path if necessary */
BOOL bAddDrive = TRUE;
BOOL bAddCurrentPath = TRUE;
BOOL bAddPrefix = TRUE;
/* does path begin with drive? if yes, it is absolute */
if (iswalpha(name[0]) && name[1] == ':' && IsPathSeparator(name[2])) {
bAddDrive = FALSE;
bAddCurrentPath = FALSE;
}
/* is path absolute? */
if (IsPathSeparator(name[0]))
bAddCurrentPath = FALSE;
/* is path relative to itself?, if yes, skip ./ */
if (name[0] == '.' && IsPathSeparator(name[1])) {
name += 2;
}
/* is path of form '//./'? */
if (IsPathSeparator(name[0]) &&
IsPathSeparator(name[1]) &&
name[2] == '.' &&
IsPathSeparator(name[3])) {
bAddDrive = FALSE;
bAddCurrentPath = FALSE;
bAddPrefix = FALSE;
if (pBIsRawPath) {
*pBIsRawPath = TRUE;
}
}
int nParseOffset = 0;
/* add 4 bytes header */
if (bAddPrefix) {
nParseOffset = 4;
wcscpy(pwszBuf, L"\\\\?\\");
}
/* get current path if needed */
if (bAddDrive || bAddCurrentPath) {
dwCurDirPathSize = p_GetCurrentDirectoryW(0, NULL);
if (dwCurDirPathSize > 0) {
/* get directory into own buffer as it may either return c:\... or \\?\C:\.... */
pwszCurDirBuf = (wchar_t *)check_pool_memory_size((POOLMEM *)pwszCurDirBuf, (dwCurDirPathSize+1)*sizeof(wchar_t));
p_GetCurrentDirectoryW(dwCurDirPathSize, pwszCurDirBuf);
} else {
/* we have no info for doing so */
bAddDrive = FALSE;
bAddCurrentPath = FALSE;
}
}
/* add drive if needed */
if (bAddDrive && !bAddCurrentPath) {
wchar_t szDrive[3];
if (IsPathSeparator(pwszCurDirBuf[0]) &&
IsPathSeparator(pwszCurDirBuf[1]) &&
pwszCurDirBuf[2] == '?' &&
IsPathSeparator(pwszCurDirBuf[3])) {
/* copy drive character */
szDrive[0] = pwszCurDirBuf[4];
} else {
/* copy drive character */
szDrive[0] = pwszCurDirBuf[0];
}
szDrive[1] = ':';
szDrive[2] = 0;
wcscat(pwszBuf, szDrive);
nParseOffset +=2;
}
/* add path if needed */
if (bAddCurrentPath) {
/* the 1 add. character is for the eventually added backslash */
dwBufCharsNeeded += dwCurDirPathSize+1;
pwszBuf = (wchar_t *)check_pool_memory_size((POOLMEM *)pwszBuf, dwBufCharsNeeded*sizeof(wchar_t));
/* get directory into own buffer as it may either return c:\... or \\?\C:\.... */
if (IsPathSeparator(pwszCurDirBuf[0]) &&
IsPathSeparator(pwszCurDirBuf[1]) &&
pwszCurDirBuf[2] == '?' &&
IsPathSeparator(pwszCurDirBuf[3])) {
/* copy complete string */
wcscpy(pwszBuf, pwszCurDirBuf);
} else {
/* append path */
wcscat(pwszBuf, pwszCurDirBuf);
}
nParseOffset = wcslen((LPCWSTR) pwszBuf);
/* check if path ends with backslash, if not, add one */
if (!IsPathSeparator(pwszBuf[nParseOffset-1])) {
wcscat(pwszBuf, L"\\");
nParseOffset++;
}
}
wchar_t *win32_name = &pwszBuf[nParseOffset];
wchar_t *name_start = name;
while (*name) {
/* Check for Unix separator and convert to Win32, eliminating
* duplicate separators.
*/
if (IsPathSeparator(*name)) {
*win32_name++ = '\\'; /* convert char */
/* Eliminate consecutive slashes, but not at the start so that
* \\.\ still works.
*/
if (name_start != name && IsPathSeparator(name[1])) {
name++;
}
} else {
*win32_name++ = *name; /* copy character */
}
name++;
}
/* null terminate string */
*win32_name = 0;
/* here we convert to VSS specific file name which
* can get longer because VSS will make something like
* \\\\?\\GLOBALROOT\\Device\\HarddiskVolumeShadowCopy1\\bareos\\uninstall.exe
* from c:\bareos\uninstall.exe
*/
if (g_pVSSPathConvertW != NULL) {
/* is output buffer large enough? */
pwszBuf = (wchar_t *)check_pool_memory_size((POOLMEM *)pwszBuf,
(dwBufCharsNeeded+MAX_PATH)*sizeof(wchar_t));
/* create temp. buffer */
wchar_t *pszBuf = (wchar_t *)get_pool_memory(PM_FNAME);
pszBuf = (wchar_t *)check_pool_memory_size((POOLMEM *)pszBuf,
(dwBufCharsNeeded+MAX_PATH)*sizeof(wchar_t));
if (bAddPrefix)
nParseOffset = 4;
else
nParseOffset = 0;
wcsncpy(pszBuf, &pwszBuf[nParseOffset], wcslen(pwszBuf)+1-nParseOffset);
g_pVSSPathConvertW(pszBuf, pwszBuf, dwBufCharsNeeded+MAX_PATH);
free_pool_memory((POOLMEM *)pszBuf);
}
free_pool_memory(pszUCSPath);
free_pool_memory((POOLMEM *)pwszCurDirBuf);
Dmsg1(dbglvl, "Leave wchar_win32_path=%s\n", pwszBuf);
return (POOLMEM *)pwszBuf;
}
/*
* Convert from WCHAR (UCS) to UTF-8
*/
int
wchar_2_UTF8(POOLMEM **pszUTF, const wchar_t *pszUCS)
{
/**
* The return value is the number of bytes written to the buffer.
* The number includes the byte for the null terminator.
*/
if (p_WideCharToMultiByte) {
int nRet = p_WideCharToMultiByte(CP_UTF8,0,pszUCS,-1,NULL,0,NULL,NULL);
*pszUTF = check_pool_memory_size(*pszUTF, nRet);
return p_WideCharToMultiByte(CP_UTF8,0,pszUCS,-1,*pszUTF,nRet,NULL,NULL);
} else {
return 0;
}
}
/*
* Convert from WCHAR (UCS) to UTF-8
*/
int
wchar_2_UTF8(char *pszUTF, const wchar_t *pszUCS, int cchChar)
{
/**
* The return value is the number of bytes written to the buffer.
* The number includes the byte for the null terminator.
*/
if (p_WideCharToMultiByte) {
int nRet = p_WideCharToMultiByte(CP_UTF8,0,pszUCS,-1,pszUTF,cchChar,NULL,NULL);
ASSERT (nRet > 0);
return nRet;
} else {
return 0;
}
}
int
UTF8_2_wchar(POOLMEM **ppszUCS, const char *pszUTF)
{
/* the return value is the number of wide characters written to the buffer. */
/* convert null terminated string from utf-8 to ucs2, enlarge buffer if necessary */
if (p_MultiByteToWideChar) {
/* strlen of UTF8 +1 is enough */
DWORD cchSize = (strlen(pszUTF)+1);
*ppszUCS = check_pool_memory_size(*ppszUCS, cchSize*sizeof (wchar_t));
int nRet = p_MultiByteToWideChar(CP_UTF8, 0, pszUTF, -1, (LPWSTR) *ppszUCS,cchSize);
ASSERT (nRet > 0);
return nRet;
} else {
return 0;
}
}
void
wchar_win32_path(const char *name, wchar_t *win32_name)
{
const char *fname = name;
while (*name) {
/* Check for Unix separator and convert to Win32 */
if (*name == '/') {
*win32_name++ = '\\'; /* convert char */
/* If Win32 separated that is "quoted", remove quote */
} else if (*name == '\\' && name[1] == '\\') {
*win32_name++ = '\\';
name++; /* skip first \ */
} else {
*win32_name++ = *name; /* copy character */
}
name++;
}
/* Strip any trailing slash, if we stored something */
if (*fname != 0 && win32_name[-1] == '\\') {
win32_name[-1] = 0;
} else {
*win32_name = 0;
}
}
int
make_win32_path_UTF8_2_wchar(POOLMEM **pszUCS, const char *pszUTF, BOOL* pBIsRawPath /*= NULL*/)
{
P(Win32Convmutex);
/* if we find the utf8 string in cache, we use the cached ucs2 version.
we compare the stringlength first (quick check) and then compare the content.
*/
if (!g_pWin32ConvUTF8Cache) {
Win32ConvInitCache();
} else if (g_dwWin32ConvUTF8strlen == strlen(pszUTF)) {
if (bstrcmp(pszUTF, g_pWin32ConvUTF8Cache)) {
/* Return cached value */
int32_t nBufSize = sizeof_pool_memory(g_pWin32ConvUCS2Cache);
*pszUCS = check_pool_memory_size(*pszUCS, nBufSize);
wcscpy((LPWSTR) *pszUCS, (LPWSTR)g_pWin32ConvUCS2Cache);
V(Win32Convmutex);
return nBufSize / sizeof (WCHAR);
}
}
/* helper to convert from utf-8 to UCS-2 and to complete a path for 32K path syntax */
int nRet = UTF8_2_wchar(pszUCS, pszUTF);
#ifdef USE_WIN32_32KPATHCONVERSION
/* add \\?\ to support 32K long filepaths */
*pszUCS = make_wchar_win32_path(*pszUCS, pBIsRawPath);
#else
if (pBIsRawPath)
*pBIsRawPath = FALSE;
#endif
/* populate cache */
g_pWin32ConvUCS2Cache = check_pool_memory_size(g_pWin32ConvUCS2Cache, sizeof_pool_memory(*pszUCS));
wcscpy((LPWSTR) g_pWin32ConvUCS2Cache, (LPWSTR) *pszUCS);
g_dwWin32ConvUTF8strlen = strlen(pszUTF);
g_pWin32ConvUTF8Cache = check_pool_memory_size(g_pWin32ConvUTF8Cache, g_dwWin32ConvUTF8strlen+2);
bstrncpy(g_pWin32ConvUTF8Cache, pszUTF, g_dwWin32ConvUTF8strlen+1);
V(Win32Convmutex);
return nRet;
}
#if !defined(_MSC_VER) || (_MSC_VER < 1400) // VC8+
int umask(int)
{
return 0;
}
#endif
#ifndef LOAD_WITH_ALTERED_SEARCH_PATH
#define LOAD_WITH_ALTERED_SEARCH_PATH 0x00000008
#endif
void *dlopen(const char *file, int mode)
{
void *handle;
handle = LoadLibraryEx(file, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
return handle;
}
void *dlsym(void *handle, const char *name)
{
void *symaddr;
symaddr = (void *)GetProcAddress((HMODULE)handle, name);
return symaddr;
}
int dlclose(void *handle)
{
if (handle && !FreeLibrary((HMODULE)handle)) {
errno = b_errno_win32;
return 1; /* failed */
}
return 0; /* OK */
}
char *dlerror(void)
{
static char buf[200];
const char *err = errorString();
bstrncpy(buf, (char *)err, sizeof(buf));
LocalFree((void *)err);
return buf;
}
int fcntl(int fd, int cmd)
{
return 0;
}
int chown(const char *k, uid_t, gid_t)
{
return 0;
}
int lchown(const char *k, uid_t, gid_t)
{
return 0;
}
long int
random(void)
{
return rand();
}
void
srandom(unsigned int seed)
{
srand(seed);
}
// /////////////////////////////////////////////////////////////////
// convert from Windows concept of time to Unix concept of time
// /////////////////////////////////////////////////////////////////
void
cvt_utime_to_ftime(const time_t &time, FILETIME &wintime)
{
uint64_t mstime = time;
mstime *= WIN32_FILETIME_SCALE;
mstime += WIN32_FILETIME_ADJUST;
#if defined(_MSC_VER)
wintime.dwLowDateTime = (DWORD)(mstime & 0xffffffffI64);
#else
wintime.dwLowDateTime = (DWORD)(mstime & 0xffffffffUL);
#endif
wintime.dwHighDateTime = (DWORD) ((mstime>>32)& 0xffffffffUL);
}
time_t
cvt_ftime_to_utime(const FILETIME &time)
{
uint64_t mstime = time.dwHighDateTime;
mstime <<= 32;
mstime |= time.dwLowDateTime;
mstime -= WIN32_FILETIME_ADJUST;
mstime /= WIN32_FILETIME_SCALE; // convert to seconds.
return (time_t) (mstime & 0xffffffff);
}
static const char *errorString(void)
{
LPVOID lpMsgBuf;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default lang
(LPTSTR) &lpMsgBuf,
0,
NULL);
/* Strip any \r or \n */
char *rval = (char *) lpMsgBuf;
char *cp = strchr(rval, '\r');
if (cp != NULL) {
*cp = 0;
} else {
cp = strchr(rval, '\n');
if (cp != NULL)
*cp = 0;
}
return rval;
}
/*
* This is only called for directories, and is used to get the directory
* attributes and find out if we have a junction point or a mount point
* or other kind of "funny" directory.
*/
static int
statDir(const char *file, struct stat *sb)
{
WIN32_FIND_DATAW info_w; // window's file info
WIN32_FIND_DATAA info_a; // window's file info
// cache some common vars to make code more transparent
DWORD *pdwFileAttributes;
DWORD *pnFileSizeHigh;
DWORD *pnFileSizeLow;
DWORD *pdwReserved0;
FILETIME *pftLastAccessTime;
FILETIME *pftLastWriteTime;
FILETIME *pftCreationTime;
HANDLE h = INVALID_HANDLE_VALUE;
/*
* Oh, cool, another exception: Microsoft doesn't let us do
* FindFile operations on a Drive, so simply fake root attibutes.
*/
if (file[1] == ':' && file[2] == 0) {
time_t now = time(NULL);
Dmsg1(dbglvl, "faking ROOT attrs(%s).\n", file);
sb->st_mode = S_IFDIR;
sb->st_mode |= S_IREAD|S_IEXEC|S_IWRITE;
sb->st_ctime = now;
sb->st_mtime = now;
sb->st_atime = now;
sb->st_rdev = 0;
return 0;
}
// use unicode
if (p_FindFirstFileW) {
POOLMEM* pwszBuf = get_pool_memory (PM_FNAME);
make_win32_path_UTF8_2_wchar(&pwszBuf, file);
Dmsg1(dbglvl, "FindFirstFileW=%s\n", file);
h = p_FindFirstFileW((LPCWSTR)pwszBuf, &info_w);
free_pool_memory(pwszBuf);
pdwFileAttributes = &info_w.dwFileAttributes;
pdwReserved0 = &info_w.dwReserved0;
pnFileSizeHigh = &info_w.nFileSizeHigh;
pnFileSizeLow = &info_w.nFileSizeLow;
pftLastAccessTime = &info_w.ftLastAccessTime;
pftLastWriteTime = &info_w.ftLastWriteTime;
pftCreationTime = &info_w.ftCreationTime;
// use ASCII
} else if (p_FindFirstFileA) {
Dmsg1(dbglvl, "FindFirstFileA=%s\n", file);
h = p_FindFirstFileA(file, &info_a);
pdwFileAttributes = &info_a.dwFileAttributes;
pdwReserved0 = &info_a.dwReserved0;
pnFileSizeHigh = &info_a.nFileSizeHigh;
pnFileSizeLow = &info_a.nFileSizeLow;
pftLastAccessTime = &info_a.ftLastAccessTime;
pftLastWriteTime = &info_a.ftLastWriteTime;
pftCreationTime = &info_a.ftCreationTime;
} else {
Dmsg0(dbglvl, "No findFirstFile A or W found\n");
}
if (h == INVALID_HANDLE_VALUE) {
const char *err = errorString();
/*
* Note, in creating leading paths, it is normal that
* the file does not exist.
*/
Dmsg2(2099, "FindFirstFile(%s):%s\n", file, err);
LocalFree((void *)err);
errno = b_errno_win32;
return -1;
} else {
FindClose(h);
}
sb->st_mode = 0777; /* start with everything */
if (*pdwFileAttributes & FILE_ATTRIBUTE_READONLY) {
sb->st_mode &= ~(S_IRUSR|S_IRGRP|S_IROTH);
}
if (*pdwFileAttributes & FILE_ATTRIBUTE_SYSTEM) {
sb->st_mode &= ~S_IRWXO; /* remove everything for other */
}
if (*pdwFileAttributes & FILE_ATTRIBUTE_HIDDEN) {
sb->st_mode |= S_ISVTX; /* use sticky user bit -> hidden */
}
if (*pdwFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) {
sb->st_mode |= S_ISGID; /* use sticky group bit -> encrypted */
}
sb->st_mode |= S_IFDIR;
/*
* Store reparse/mount point info in st_rdev. Note a
* Win32 reparse point (junction point) is like a link
* though it can have many properties (directory link,
* soft link, hard link, HSM, ...
* A mount point is a reparse point where another volume
* is mounted, so it is like a Unix mount point (change of
* filesystem).
*/
if (*pdwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
sb->st_rdev = WIN32_MOUNT_POINT;
} else {
sb->st_rdev = 0;
}
if ((*pdwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
(*pdwReserved0 & IO_REPARSE_TAG_MOUNT_POINT)) {
sb->st_rdev = WIN32_MOUNT_POINT; /* mount point */
/*
* Now to find out if the directory is a mount point or
* a reparse point, we must do a song and a dance.
* Explicitly open the file to read the reparse point, then
* call DeviceIoControl to find out if it points to a Volume
* or to a directory.
*/
h = INVALID_HANDLE_VALUE;
if (p_GetFileAttributesW) {
POOLMEM* pwszBuf = get_pool_memory(PM_FNAME);
make_win32_path_UTF8_2_wchar(&pwszBuf, file);
if (p_CreateFileW) {
h = CreateFileW((LPCWSTR)pwszBuf, GENERIC_READ,
FILE_SHARE_READ, NULL, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
NULL);
}
free_pool_memory(pwszBuf);
} else if (p_GetFileAttributesA) {
h = CreateFileA(file, GENERIC_READ,
FILE_SHARE_READ, NULL, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
NULL);
}
if (h != INVALID_HANDLE_VALUE) {
char dummy[1000];
REPARSE_DATA_BUFFER *rdb = (REPARSE_DATA_BUFFER *)dummy;
rdb->ReparseTag = IO_REPARSE_TAG_MOUNT_POINT;
DWORD bytes;
bool ok;
ok = DeviceIoControl(h, FSCTL_GET_REPARSE_POINT,
NULL, 0, /* in buffer, bytes */
(LPVOID)rdb, (DWORD)sizeof(dummy), /* out buffer, btyes */
(LPDWORD)&bytes, (LPOVERLAPPED)0);
if (ok) {
POOLMEM *utf8 = get_pool_memory(PM_NAME);
wchar_2_UTF8(&utf8, (wchar_t *)rdb->SymbolicLinkReparseBuffer.PathBuffer);
Dmsg2(dbglvl, "Junction %s points to: %s\n", file, utf8);
if (strncasecmp(utf8, "\\??\\volume{", 11) == 0) {
sb->st_rdev = WIN32_MOUNT_POINT;
} else {
/* It points to a directory so we ignore it. */
sb->st_rdev = WIN32_JUNCTION_POINT;
}
free_pool_memory(utf8);
}
CloseHandle(h);
} else {
Dmsg1(dbglvl, "Invalid handle from CreateFile(%s)\n", file);
}
}
Dmsg2(dbglvl, "st_rdev=%d file=%s\n", sb->st_rdev, file);
sb->st_size = *pnFileSizeHigh;
sb->st_size <<= 32;
sb->st_size |= *pnFileSizeLow;
sb->st_blksize = 4096;
sb->st_blocks = (uint32_t)(sb->st_size + 4095)/4096;
sb->st_atime = cvt_ftime_to_utime(*pftLastAccessTime);
sb->st_mtime = cvt_ftime_to_utime(*pftLastWriteTime);
sb->st_ctime = cvt_ftime_to_utime(*pftCreationTime);
return 0;
}
int
fstat(intptr_t fd, struct stat *sb)
{
BY_HANDLE_FILE_INFORMATION info;
if (!GetFileInformationByHandle((HANDLE)_get_osfhandle(fd), &info)) {
const char *err = errorString();
Dmsg1(2099, "GetfileInformationByHandle: %s\n", err);
LocalFree((void *)err);
errno = b_errno_win32;
return -1;
}
sb->st_dev = info.dwVolumeSerialNumber;
sb->st_ino = info.nFileIndexHigh;
sb->st_ino <<= 32;
sb->st_ino |= info.nFileIndexLow;
sb->st_nlink = (short)info.nNumberOfLinks;
if (sb->st_nlink > 1) {
Dmsg1(dbglvl, "st_nlink=%d\n", sb->st_nlink);
}
sb->st_mode = 0777; /* start with everything */
if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) {
sb->st_mode &= ~(S_IRUSR|S_IRGRP|S_IROTH);
}
if (info.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM) {
sb->st_mode &= ~S_IRWXO; /* remove everything for other */
}
if (info.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) {
sb->st_mode |= S_ISVTX; /* use sticky user bit -> hidden */
}
if (info.dwFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) {
sb->st_mode |= S_ISGID; /* use sticky group bit -> encrypted */
}
sb->st_mode |= S_IFREG;
/* Use st_rdev to store reparse attribute */
if (info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
sb->st_rdev = WIN32_REPARSE_POINT;
}
Dmsg3(dbglvl, "st_rdev=%d sizino=%d ino=%lld\n", sb->st_rdev, sizeof(sb->st_ino),
(long long)sb->st_ino);
sb->st_size = info.nFileSizeHigh;
sb->st_size <<= 32;
sb->st_size |= info.nFileSizeLow;
sb->st_blksize = 4096;
sb->st_blocks = (uint32_t)(sb->st_size + 4095)/4096;
sb->st_atime = cvt_ftime_to_utime(info.ftLastAccessTime);
sb->st_mtime = cvt_ftime_to_utime(info.ftLastWriteTime);
sb->st_ctime = cvt_ftime_to_utime(info.ftCreationTime);
return 0;
}
static int
stat2(const char *file, struct stat *sb)
{
HANDLE h = INVALID_HANDLE_VALUE;
int rval = 0;
char tmpbuf[5000];
conv_unix_to_vss_win32_path(file, tmpbuf, 5000);
DWORD attr = (DWORD)-1;
if (p_GetFileAttributesW) {
POOLMEM* pwszBuf = get_pool_memory(PM_FNAME);
make_win32_path_UTF8_2_wchar(&pwszBuf, tmpbuf);
attr = p_GetFileAttributesW((LPCWSTR) pwszBuf);
if (p_CreateFileW) {
h = CreateFileW((LPCWSTR)pwszBuf, GENERIC_READ,
FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
}
free_pool_memory(pwszBuf);
} else if (p_GetFileAttributesA) {
attr = p_GetFileAttributesA(tmpbuf);
h = CreateFileA(tmpbuf, GENERIC_READ,
FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
}
if (attr == (DWORD)-1) {
const char *err = errorString();
Dmsg2(2099, "GetFileAttributes(%s): %s\n", tmpbuf, err);
LocalFree((void *)err);
if (h != INVALID_HANDLE_VALUE) {
CloseHandle(h);
}
errno = b_errno_win32;
return -1;
}
if (h == INVALID_HANDLE_VALUE) {
const char *err = errorString();
Dmsg2(2099, "Cannot open file for stat (%s):%s\n", tmpbuf, err);
LocalFree((void *)err);
errno = b_errno_win32;
return -1;
}
rval = fstat((intptr_t)h, sb);
CloseHandle(h);
if (attr & FILE_ATTRIBUTE_DIRECTORY &&
file[1] == ':' && file[2] != 0) {
rval = statDir(file, sb);
}
return rval;
}
int
stat(const char *file, struct stat *sb)
{
WIN32_FILE_ATTRIBUTE_DATA data;
errno = 0;
memset(sb, 0, sizeof(*sb));
if (p_GetFileAttributesExW) {
/* dynamically allocate enough space for UCS2 filename */
POOLMEM *pwszBuf = get_pool_memory(PM_FNAME);
make_win32_path_UTF8_2_wchar(&pwszBuf, file);
BOOL b = p_GetFileAttributesExW((LPCWSTR)pwszBuf, GetFileExInfoStandard, &data);
free_pool_memory(pwszBuf);
if (!b) {
return stat2(file, sb);
}
} else if (p_GetFileAttributesExA) {
if (!p_GetFileAttributesExA(file, GetFileExInfoStandard, &data)) {
return stat2(file, sb);
}
} else {
return stat2(file, sb);
}
sb->st_mode = 0777; /* start with everything */
if (data.dwFileAttributes & FILE_ATTRIBUTE_READONLY) {
sb->st_mode &= ~(S_IRUSR|S_IRGRP|S_IROTH);
}
if (data.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM) {
sb->st_mode &= ~S_IRWXO; /* remove everything for other */
}
if (data.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) {
sb->st_mode |= S_ISVTX; /* use sticky user bit -> hidden */