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1f7c89fb07
snapraid/cmdline/mingw.c
Mario Fetka 1f7c89fb07 Imported Upstream version 11.6
2021-10-03 10:04:53 +02:00

2911 lines
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/*
* Copyright (C) 2011 Andrea Mazzoleni
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "portable.h"
#ifdef __MINGW32__ /* Only for MingW */
#include "support.h"
/**
* Exit codes.
*/
int exit_success = 0;
int exit_failure = 1;
int exit_sync_needed = 2;
/* Add missing Windows declaration */
/* For SetThreadExecutionState */
#define WIN32_ES_SYSTEM_REQUIRED 0x00000001L
#define WIN32_ES_DISPLAY_REQUIRED 0x00000002L
#define WIN32_ES_USER_PRESENT 0x00000004L
#define WIN32_ES_AWAYMODE_REQUIRED 0x00000040L
#define WIN32_ES_CONTINUOUS 0x80000000L
/* File Index */
#define FILE_INVALID_FILE_ID ((ULONGLONG)-1LL)
/**
* Direct access to RtlGenRandom().
* This function is accessible only with LoadLibrary() and it's available from Windows XP.
*/
static BOOLEAN (WINAPI* ptr_RtlGenRandom)(PVOID, ULONG);
/**
* Direct access to GetTickCount64().
* This function is available only from Windows Vista.
*/
static ULONGLONG (WINAPI* ptr_GetTickCount64)(void);
/**
* Description of the last error.
* It's stored in the thread local storage.
*/
static windows_key_t last_error;
/**
* Monotone tick counter
*/
static windows_mutex_t tick_lock;
static uint64_t tick_last;
/**
* If we are running in Wine.
*/
static int is_wine;
/**
* If we should use the legacy FindFirst/Next way to list directories.
*/
static int is_scan_winfind;
/**
* Loaded ADVAPI32.DLL.
*/
static HMODULE dll_advapi32;
/**
* Executable dir.
*
* Or empty or terminating with '\'.
*/
static WCHAR exedir[MAX_PATH];
/**
* Set the executable dir.
*/
static void exedir_init(void)
{
DWORD size;
WCHAR* slash;
size = GetModuleFileNameW(0, exedir, MAX_PATH);
if (size == 0 || size == MAX_PATH) {
/* use empty dir */
exedir[0] = 0;
return;
}
slash = wcsrchr(exedir, L'\\');
if (!slash) {
/* use empty dir */
exedir[0] = 0;
return;
}
/* cut exe name */
slash[1] = 0;
}
void os_init(int opt)
{
HMODULE ntdll, kernel32;
is_scan_winfind = opt != 0;
/* initialize the thread local storage for strerror(), using free() as destructor */
if (windows_key_create(&last_error, free) != 0) {
log_fatal("Error calling windows_key_create().\n");
exit(EXIT_FAILURE);
}
tick_last = 0;
if (windows_mutex_init(&tick_lock, 0) != 0) {
log_fatal("Error calling windows_mutex_init().\n");
exit(EXIT_FAILURE);
}
ntdll = GetModuleHandle("NTDLL.DLL");
if (!ntdll) {
log_fatal("Error loading the NTDLL module.\n");
exit(EXIT_FAILURE);
}
kernel32 = GetModuleHandle("KERNEL32.DLL");
if (!kernel32) {
log_fatal("Error loading the KERNEL32 module.\n");
exit(EXIT_FAILURE);
}
dll_advapi32 = LoadLibrary("ADVAPI32.DLL");
if (!dll_advapi32) {
log_fatal("Error loading the ADVAPI32 module.\n");
exit(EXIT_FAILURE);
}
/* check for Wine presence */
is_wine = GetProcAddress(ntdll, "wine_get_version") != 0;
/* setup the standard random generator used as fallback */
srand(GetTickCount());
/* get pointer to RtlGenRandom, note that it was reported missing in some cases */
ptr_RtlGenRandom = (void*)GetProcAddress(dll_advapi32, "SystemFunction036");
/* get pointer to RtlGenRandom, note that it was reported missing in some cases */
ptr_GetTickCount64 = (void*)GetProcAddress(kernel32, "GetTickCount64");
/* set the thread execution level to avoid sleep */
/* first try for Windows 7 */
if (SetThreadExecutionState(WIN32_ES_CONTINUOUS | WIN32_ES_SYSTEM_REQUIRED | WIN32_ES_AWAYMODE_REQUIRED) == 0) {
/* retry with the XP variant */
SetThreadExecutionState(WIN32_ES_CONTINUOUS | WIN32_ES_SYSTEM_REQUIRED);
}
exedir_init();
}
void os_done(void)
{
/* delete the thread local storage for strerror() */
windows_key_delete(last_error);
windows_mutex_destroy(&tick_lock);
/* restore the normal execution level */
SetThreadExecutionState(WIN32_ES_CONTINUOUS);
FreeLibrary(dll_advapi32);
}
void os_abort(void)
{
void* stack[32];
size_t size;
unsigned i;
printf("Stacktrace of " PACKAGE " v" VERSION);
printf(", mingw");
#ifdef __GNUC__
printf(", gcc " __VERSION__);
#endif
printf(", %d-bit", (int)sizeof(void *) * 8);
printf(", PATH_MAX=%d", PATH_MAX);
printf("\n");
/* get stackstrace, but without symbols */
size = CaptureStackBackTrace(0, 32, stack, NULL);
for (i = 0; i < size; ++i)
printf("[bt] %02u: %p\n", i, stack[i]);
printf("Please report this error to the SnapRAID Forum:\n");
printf("https://sourceforge.net/p/snapraid/discussion/1677233/\n");
/* use exit() and not abort to avoid the Windows abort dialog */
exit(EXIT_FAILURE);
}
void os_clear(void)
{
HANDLE console;
CONSOLE_SCREEN_BUFFER_INFO screen;
COORD coord;
DWORD written;
/* get the console */
console = GetStdHandle(STD_OUTPUT_HANDLE);
if (console == INVALID_HANDLE_VALUE)
return;
/* get the screen size */
if (!GetConsoleScreenBufferInfo(console, &screen))
return;
/* fill the screen with spaces */
coord.X = 0;
coord.Y = 0;
FillConsoleOutputCharacterA(console, ' ', screen.dwSize.X * screen.dwSize.Y, coord, &written);
/* set the cursor at the top left corner */
SetConsoleCursorPosition(console, coord);
}
/**
* Size in chars of conversion buffers for u8to16() and u16to8().
*/
#define CONV_MAX PATH_MAX
/**
* Convert a generic string from UTF8 to UTF16.
*/
static wchar_t* u8tou16(wchar_t* conv_buf, const char* src)
{
int ret;
ret = MultiByteToWideChar(CP_UTF8, 0, src, -1, conv_buf, CONV_MAX);
if (ret <= 0) {
log_fatal("Error converting name '%s' from UTF-8 to UTF-16\n", src);
exit(EXIT_FAILURE);
}
return conv_buf;
}
/**
* Convert a generic string from UTF16 to UTF8.
*/
static char* u16tou8ex(char* conv_buf, const wchar_t* src, size_t number_of_wchar, size_t* result_length_without_terminator)
{
int ret;
ret = WideCharToMultiByte(CP_UTF8, 0, src, number_of_wchar, conv_buf, CONV_MAX, 0, 0);
if (ret <= 0) {
log_fatal("Error converting from UTF-16 to UTF-8\n");
exit(EXIT_FAILURE);
}
*result_length_without_terminator = ret;
return conv_buf;
}
static char* u16tou8(char* conv_buf, const wchar_t* src)
{
size_t len;
/* convert also the 0 terminator */
return u16tou8ex(conv_buf, src, wcslen(src) + 1, &len);
}
/**
* Check if the char is a forward or back slash.
*/
static int is_slash(char c)
{
return c == '/' || c == '\\';
}
/**
* Convert a path to the Windows format.
*
* If only_is_required is 1, the extended-length format is used only if required.
*
* The exact operation done is:
* - If it's a '\\?\' or '\\.\' path, convert any '/' to '\'.
* - If it's a disk designator path, like 'D:\' or 'D:/', it prepends '\\?\' to the path and convert any '/' to '\'.
* - If it's a UNC path, like ''\\server'', it prepends '\\?\UNC\' to the path and convert any '/' to '\'.
* - Otherwise, only the UTF conversion is done. In this case Windows imposes a limit of 260 chars, and automatically convert any '/' to '\'.
*
* For more details see:
* Naming Files, Paths, and Namespaces
* http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx#maxpath
*/
static wchar_t* convert_arg(wchar_t* conv_buf, const char* src, int only_if_required)
{
int ret;
wchar_t* dst;
int count;
dst = conv_buf;
/* note that we always check for both / and \ because the path is blindly */
/* converted to unix format by path_import() */
if (only_if_required && strlen(src) < 260 - 12) {
/* it's a short path */
/* 260 is the MAX_PATH, note that it includes the space for the terminating NUL */
/* 12 is an additional space for filename, required when creating directory */
/* do nothing */
} else if (is_slash(src[0]) && is_slash(src[1]) && (src[2] == '?' || src[2] == '.') && is_slash(src[3])) {
/* if it's already a '\\?\' or '\\.\' path */
/* do nothing */
} else if (is_slash(src[0]) && is_slash(src[1])) {
/* if it is a UNC path, like '\\server' */
/* prefix with '\\?\UNC\' */
*dst++ = L'\\';
*dst++ = L'\\';
*dst++ = L'?';
*dst++ = L'\\';
*dst++ = L'U';
*dst++ = L'N';
*dst++ = L'C';
*dst++ = L'\\';
/* skip initial '\\' */
src += 2;
} else if (src[0] != 0 && src[1] == ':' && is_slash(src[2])) {
/* if it is a disk designator path, like 'D:\' or 'D:/' */
/* prefix with '\\?\' */
*dst++ = L'\\';
*dst++ = L'\\';
*dst++ = L'?';
*dst++ = L'\\';
}
/* chars already used */
count = dst - conv_buf;
ret = MultiByteToWideChar(CP_UTF8, 0, src, -1, dst, CONV_MAX - count);
if (ret <= 0) {
log_fatal("Error converting name '%s' from UTF-8 to UTF-16\n", src);
exit(EXIT_FAILURE);
}
/* convert any / to \ */
/* note that in UTF-16, it's not possible to have '/' used as part */
/* of a pair of codes representing a single UNICODE char */
/* See: http://en.wikipedia.org/wiki/UTF-16 */
while (*dst) {
if (*dst == L'/')
*dst = L'\\';
++dst;
}
return conv_buf;
}
#define convert(buf, a) convert_arg(buf, a, 0)
#define convert_if_required(buf, a) convert_arg(buf, a, 1)
static BOOL GetReparseTagInfoByHandle(HANDLE hFile, FILE_ATTRIBUTE_TAG_INFO* lpFileAttributeTagInfo, DWORD dwFileAttributes)
{
/* if not a reparse point, return no info */
if ((dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) == 0) {
lpFileAttributeTagInfo->FileAttributes = dwFileAttributes;
lpFileAttributeTagInfo->ReparseTag = 0;
return TRUE;
}
/* do the real call */
return GetFileInformationByHandleEx(hFile, FileAttributeTagInfo, lpFileAttributeTagInfo, sizeof(FILE_ATTRIBUTE_TAG_INFO));
}
/**
* Convert Windows attr to the Unix stat format.
*/
static void windows_attr2stat(DWORD FileAttributes, DWORD ReparseTag, struct windows_stat* st)
{
/* Convert special attributes */
if ((FileAttributes & FILE_ATTRIBUTE_DEVICE) != 0) {
st->st_mode = S_IFBLK;
st->st_desc = "device";
} else if ((FileAttributes & FILE_ATTRIBUTE_OFFLINE) != 0) { /* Offline */
st->st_mode = S_IFCHR;
st->st_desc = "offline";
} else if ((FileAttributes & FILE_ATTRIBUTE_TEMPORARY) != 0) { /* Temporary */
st->st_mode = S_IFCHR;
st->st_desc = "temporary";
} else if ((FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) != 0) { /* Reparse point */
switch (ReparseTag) {
/* if we don't have the ReparseTag information */
case 0 :
/* don't set the st_mode, to set it later calling lstat_sync() */
st->st_mode = 0;
st->st_desc = "unknown";
break;
/* for deduplicated files, assume that they are regular ones */
case IO_REPARSE_TAG_DEDUP :
if ((FileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) {
st->st_mode = S_IFDIR;
st->st_desc = "directory-dedup";
} else {
st->st_mode = S_IFREG;
st->st_desc = "regular-dedup";
}
break;
case IO_REPARSE_TAG_SYMLINK :
if ((FileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) {
st->st_mode = S_IFLNKDIR;
st->st_desc = "reparse-point-symlink-dir";
} else {
st->st_mode = S_IFLNK;
st->st_desc = "reparse-point-symlink-file";
}
break;
/* all the other are skipped as reparse-point */
case IO_REPARSE_TAG_MOUNT_POINT :
st->st_mode = S_IFCHR;
st->st_desc = "reparse-point-mount";
break;
case IO_REPARSE_TAG_NFS :
st->st_mode = S_IFCHR;
st->st_desc = "reparse-point-nfs";
break;
default :
st->st_mode = S_IFCHR;
st->st_desc = "reparse-point";
break;
}
} else if ((FileAttributes & FILE_ATTRIBUTE_SYSTEM) != 0) { /* System */
if ((FileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) {
st->st_mode = S_IFCHR;
st->st_desc = "system-directory";
} else {
st->st_mode = S_IFREG;
st->st_desc = "system-file";
}
} else {
if ((FileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) {
st->st_mode = S_IFDIR;
st->st_desc = "directory";
} else {
st->st_mode = S_IFREG;
st->st_desc = "regular";
}
}
/* store the HIDDEN attribute in a separate field */
st->st_hidden = (FileAttributes & FILE_ATTRIBUTE_HIDDEN) != 0;
}
/**
* Convert Windows info to the Unix stat format.
*/
static int windows_info2stat(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ATTRIBUTE_TAG_INFO* tag, struct windows_stat* st)
{
uint64_t mtime;
windows_attr2stat(info->dwFileAttributes, tag->ReparseTag, st);
st->st_size = info->nFileSizeHigh;
st->st_size <<= 32;
st->st_size |= info->nFileSizeLow;
mtime = info->ftLastWriteTime.dwHighDateTime;
mtime <<= 32;
mtime |= info->ftLastWriteTime.dwLowDateTime;
/*
* Convert to unix time
*
* How To Convert a UNIX time_t to a Win32 FILETIME or SYSTEMTIME
* http://support.microsoft.com/kb/167296
*/
mtime -= 116444736000000000LL;
st->st_mtime = mtime / 10000000;
st->st_mtimensec = (mtime % 10000000) * 100;
st->st_ino = info->nFileIndexHigh;
st->st_ino <<= 32;
st->st_ino |= info->nFileIndexLow;
st->st_nlink = info->nNumberOfLinks;
st->st_dev = info->dwVolumeSerialNumber;
/* GetFileInformationByHandle() ensures to return synced information */
st->st_sync = 1;
/**
* In ReFS the IDs are 128 bit, and the 64 bit interface may fail.
*
* From Microsoft "Application Compatibility with ReFS"
* http://download.microsoft.com/download/C/B/3/CB3561DC-6BF6-443D-B5B9-9676ACDF7F75/Application%20Compatibility%20with%20ReFS.docx
* "64-bit file identifier can be obtained from GetFileInformationByHandle in"
* "the nFileIndexHigh and nFileIndexLow members. This API is an extended version"
* "that includes 128-bit file identifiers. If GetFileInformationByHandle returns"
* "FILE_INVALID_FILE_ID, the identifier may only be described in 128 bit form."
*/
if (st->st_ino == FILE_INVALID_FILE_ID) {
log_fatal("Invalid inode number! Is this ReFS?\n");
errno = EINVAL;
return -1;
}
return 0;
}
/**
* Convert Windows info to the Unix stat format.
*/
static int windows_stream2stat(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ID_BOTH_DIR_INFO* stream, struct windows_stat* st)
{
uint64_t mtime;
/* The FILE_ID_BOTH_DIR_INFO doesn't have the ReparseTag information */
/* we could use instead FILE_ID_EXTD_DIR_INFO, but it's available only */
/* from Windows Server 2012 */
windows_attr2stat(stream->FileAttributes, 0, st);
st->st_size = stream->EndOfFile.QuadPart;
mtime = stream->LastWriteTime.QuadPart;
/*
* Convert to unix time
*
* How To Convert a UNIX time_t to a Win32 FILETIME or SYSTEMTIME
* http://support.microsoft.com/kb/167296
*/
mtime -= 116444736000000000LL;
st->st_mtime = mtime / 10000000;
st->st_mtimensec = (mtime % 10000000) * 100;
st->st_ino = stream->FileId.QuadPart;
st->st_nlink = info->nNumberOfLinks;
st->st_dev = info->dwVolumeSerialNumber;
/* directory listing doesn't ensure to return synced information */
st->st_sync = 0;
/* in ReFS the IDs are 128 bit, and the 64 bit interface may fail */
if (st->st_ino == FILE_INVALID_FILE_ID) {
log_fatal("Invalid inode number! Is this ReFS?\n");
errno = EINVAL;
return -1;
}
return 0;
}
/**
* Convert Windows findfirst info to the Unix stat format.
*/
static void windows_finddata2stat(const WIN32_FIND_DATAW* info, struct windows_stat* st)
{
uint64_t mtime;
windows_attr2stat(info->dwFileAttributes, info->dwReserved0, st);
st->st_size = info->nFileSizeHigh;
st->st_size <<= 32;
st->st_size |= info->nFileSizeLow;
mtime = info->ftLastWriteTime.dwHighDateTime;
mtime <<= 32;
mtime |= info->ftLastWriteTime.dwLowDateTime;
/*
* Convert to unix time
*
* How To Convert a UNIX time_t to a Win32 FILETIME or SYSTEMTIME
* http://support.microsoft.com/kb/167296
*/
mtime -= 116444736000000000LL;
st->st_mtime = mtime / 10000000;
st->st_mtimensec = (mtime % 10000000) * 100;
/* No inode information available */
st->st_ino = 0;
/* No link information available */
st->st_nlink = 0;
/* No device information available */
st->st_dev = 0;
/* directory listing doesn't ensure to return synced information */
st->st_sync = 0;
}
static void windows_finddata2dirent(const WIN32_FIND_DATAW* info, struct windows_dirent* dirent)
{
char conv_buf[CONV_MAX];
const char* name;
size_t len;
name = u16tou8ex(conv_buf, info->cFileName, wcslen(info->cFileName), &len);
if (len + 1 >= sizeof(dirent->d_name)) {
log_fatal("Name too long\n");
exit(EXIT_FAILURE);
}
memcpy(dirent->d_name, name, len);
dirent->d_name[len] = 0;
windows_finddata2stat(info, &dirent->d_stat);
}
static int windows_stream2dirent(const BY_HANDLE_FILE_INFORMATION* info, const FILE_ID_BOTH_DIR_INFO* stream, struct windows_dirent* dirent)
{
char conv_buf[CONV_MAX];
const char* name;
size_t len;
name = u16tou8ex(conv_buf, stream->FileName, stream->FileNameLength / 2, &len);
if (len + 1 >= sizeof(dirent->d_name)) {
log_fatal("Name too long\n");
exit(EXIT_FAILURE);
}
memcpy(dirent->d_name, name, len);
dirent->d_name[len] = 0;
return windows_stream2stat(info, stream, &dirent->d_stat);
}
/**
* Convert Windows error to errno.
*/
static void windows_errno(DWORD error)
{
switch (error) {
case ERROR_INVALID_HANDLE :
/* we check for a bad handle calling _get_osfhandle() */
/* and in such case we return EBADF */
/* Other cases are here identified with EINVAL */
errno = EINVAL;
break;
case ERROR_HANDLE_EOF : /* in ReadFile() over the end of the file */
errno = EINVAL;
break;
case ERROR_FILE_NOT_FOUND :
case ERROR_PATH_NOT_FOUND : /* in GetFileAttributeW() if internal path not found */
errno = ENOENT;
break;
case ERROR_ACCESS_DENIED : /* in CreateDirectoryW() if dir is scheduled for deletion */
case ERROR_CURRENT_DIRECTORY : /* in RemoveDirectoryW() if removing the current directory */
case ERROR_SHARING_VIOLATION : /* in RemoveDirectoryW() if in use */
case ERROR_WRITE_PROTECT : /* when dealing with read-only media/snapshot and trying to write to them */
errno = EACCES;
break;
case ERROR_ALREADY_EXISTS : /* in CreateDirectoryW() if already exists */
errno = EEXIST;
break;
case ERROR_DISK_FULL :
errno = ENOSPC;
break;
case ERROR_BUFFER_OVERFLOW :
errno = ENAMETOOLONG;
break;
case ERROR_NOT_ENOUGH_MEMORY :
errno = ENOMEM;
break;
case ERROR_NOT_SUPPORTED : /* in CreateSymlinkW() if not present in kernel32 */
errno = ENOSYS;
break;
case ERROR_PRIVILEGE_NOT_HELD : /* in CreateSymlinkW() if no SeCreateSymbolicLinkPrivilige permission */
errno = EPERM;
break;
case ERROR_IO_DEVICE : /* in ReadFile() and WriteFile() */
case ERROR_CRC : /* in ReadFile() */
errno = EIO;
break;
default :
log_fatal("Unexpected Windows error %d.\n", (int)error);
errno = EIO;
break;
}
}
int windows_fstat(int fd, struct windows_stat* st)
{
BY_HANDLE_FILE_INFORMATION info;
FILE_ATTRIBUTE_TAG_INFO tag;
HANDLE h;
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
if (!GetFileInformationByHandle(h, &info)) {
windows_errno(GetLastError());
return -1;
}
if (!GetReparseTagInfoByHandle(h, &tag, info.dwFileAttributes)) {
windows_errno(GetLastError());
return -1;
}
return windows_info2stat(&info, &tag, st);
}
int windows_lstat(const char* file, struct windows_stat* st)
{
wchar_t conv_buf[CONV_MAX];
HANDLE h;
WIN32_FIND_DATAW data;
/* FindFirstFileW by default gets information of symbolic links and not of their targets */
h = FindFirstFileW(convert(conv_buf, file), &data);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
if (!FindClose(h)) {
windows_errno(GetLastError());
return -1;
}
windows_finddata2stat(&data, st);
return 0;
}
void windows_dirent_lstat(const struct windows_dirent* dd, struct windows_stat* st)
{
memcpy(st, &dd->d_stat, sizeof(struct windows_stat));
}
int windows_mkdir(const char* file)
{
wchar_t conv_buf[CONV_MAX];
if (!CreateDirectoryW(convert(conv_buf, file), 0)) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
int windows_rmdir(const char* file)
{
wchar_t conv_buf[CONV_MAX];
if (!RemoveDirectoryW(convert(conv_buf, file))) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
static BOOL GetFilePhysicalOffset(HANDLE h, uint64_t* physical)
{
STARTING_VCN_INPUT_BUFFER svib;
unsigned char rpb_buffer[sizeof(RETRIEVAL_POINTERS_BUFFER)];
RETRIEVAL_POINTERS_BUFFER* rpb = (RETRIEVAL_POINTERS_BUFFER*)&rpb_buffer;
BOOL ret;
DWORD n;
/* in Wine FSCTL_GET_RETRIVIAL_POINTERS is not supported */
if (is_wine) {
*physical = FILEPHY_UNREPORTED_OFFSET;
return TRUE;
}
/* set the output variable, just to be safe */
rpb->ExtentCount = 0;
/* read the physical address */
svib.StartingVcn.QuadPart = 0;
ret = DeviceIoControl(h, FSCTL_GET_RETRIEVAL_POINTERS, &svib, sizeof(svib), rpb_buffer, sizeof(rpb_buffer), &n, 0);
if (!ret) {
DWORD error = GetLastError();
if (error == ERROR_MORE_DATA) {
/* we ignore ERROR_MODE_DATA because we are interested only at the first entry */
/* and this is the expected error if the files has more entries */
} else if (error == ERROR_HANDLE_EOF) {
/* if the file is small, it can be stored in the Master File Table (MFT) */
/* and then it doesn't have a physical address */
/* In such case we report a specific fake address, to report this special condition */
/* that it's different from the 0 offset reported by the underline file system */
*physical = FILEPHY_WITHOUT_OFFSET;
return TRUE;
} else if (error == ERROR_NOT_SUPPORTED) {
/* for disks shared on network this operation is not supported */
*physical = FILEPHY_UNREPORTED_OFFSET;
return TRUE;
} else {
return FALSE;
}
}
if (rpb->ExtentCount < 1)
*physical = FILEPHY_UNREPORTED_OFFSET;
else
*physical = rpb->Extents[0].Lcn.QuadPart + FILEPHY_REAL_OFFSET;
return TRUE;
}
int lstat_sync(const char* file, struct windows_stat* st, uint64_t* physical)
{
wchar_t conv_buf[CONV_MAX];
BY_HANDLE_FILE_INFORMATION info;
FILE_ATTRIBUTE_TAG_INFO tag;
HANDLE h;
/*
* Open the handle of the file.
*
* Use FILE_FLAG_BACKUP_SEMANTICS to open directories (it's just ignored for files).
* Use FILE_FLAG_OPEN_REPARSE_POINT to open symbolic links and not the their target.
*
* Note that even with FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
* and FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT some paths
* cannot be opened like "C:\System Volume Information" resulting
* in error ERROR_ACCESS_DENIED.
*/
h = CreateFileW(convert(conv_buf, file), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 0);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
if (!GetFileInformationByHandle(h, &info)) {
DWORD error = GetLastError();
CloseHandle(h);
windows_errno(error);
return -1;
}
if (!GetReparseTagInfoByHandle(h, &tag, info.dwFileAttributes)) {
DWORD error = GetLastError();
CloseHandle(h);
windows_errno(error);
return -1;
}
/* read the physical offset, only if a pointer is provided */
if (physical != 0) {
if (!GetFilePhysicalOffset(h, physical)) {
DWORD error = GetLastError();
CloseHandle(h);
windows_errno(error);
return -1;
}
}
if (!CloseHandle(h)) {
windows_errno(GetLastError());
return -1;
}
return windows_info2stat(&info, &tag, st);
}
int windows_stat(const char* file, struct windows_stat* st)
{
wchar_t conv_buf[CONV_MAX];
BY_HANDLE_FILE_INFORMATION info;
FILE_ATTRIBUTE_TAG_INFO tag;
HANDLE h;
/*
* Open the handle of the file.
*
* Use FILE_FLAG_BACKUP_SEMANTICS to open directories (it's just ignored for files).
*/
h = CreateFileW(convert(conv_buf, file), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
if (!GetFileInformationByHandle(h, &info)) {
DWORD error = GetLastError();
CloseHandle(h);
windows_errno(error);
return -1;
}
if (!GetReparseTagInfoByHandle(h, &tag, info.dwFileAttributes)) {
DWORD error = GetLastError();
CloseHandle(h);
windows_errno(error);
return -1;
}
if (!CloseHandle(h)) {
windows_errno(GetLastError());
return -1;
}
return windows_info2stat(&info, &tag, st);
}
int windows_ftruncate(int fd, off64_t off)
{
HANDLE h;
LARGE_INTEGER pos;
if (fd == -1) {
errno = EBADF;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
pos.QuadPart = off;
if (!SetFilePointerEx(h, pos, 0, FILE_BEGIN)) {
windows_errno(GetLastError());
return -1;
}
/*
* Windows effectively reserves space, but it doesn't initialize it.
* It's then important to write starting from the begin to the end,
* to avoid to have Windows to fill the holes writing zeros.
*
* See:
* "Why does my single-byte write take forever?"
* http://blogs.msdn.com/b/oldnewthing/archive/2011/09/22/10215053.aspx
*/
if (!SetEndOfFile(h)) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
int windows_fallocate(int fd, int mode, off64_t off, off64_t len)
{
if (mode != 0)
return -1;
/* no difference with ftruncate because Windows doesn't use sparse files */
return windows_ftruncate(fd, off + len);
}
int windows_fsync(int fd)
{
HANDLE h;
if (fd == -1) {
errno = EBADF;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
/*
* "The FlushFileBuffers API can be used to flush all the outstanding data
* and metadata on a single file or a whole volume. However, frequent use
* of this API can cause reduced throughput. Internally, Windows uses the
* SCSI Synchronize Cache or the IDE/ATAPI Flush cache commands."
*
* From:
* "Windows Write Caching - Part 2 An overview for Application Developers"
* http://winntfs.com/2012/11/29/windows-write-caching-part-2-an-overview-for-application-developers/
*/
if (!FlushFileBuffers(h)) {
DWORD error = GetLastError();
switch (error) {
case ERROR_INVALID_HANDLE :
/*
* FlushFileBuffers returns this error if the handle
* doesn't support buffering, like the console output.
*
* We had a report that also ATA-over-Ethernet returns
* this error, but not enough sure to ignore it.
* So, we use now an extended error reporting.
*/
log_fatal("Unexpected Windows INVALID_HANDLE error in FlushFileBuffers().\n");
log_fatal("Are you using ATA-over-Ethernet ? Please report it.\n");
/* normal error processing */
windows_errno(error);
return -1;
case ERROR_ACCESS_DENIED :
/*
* FlushFileBuffers returns this error for read-only
* data, that cannot have to be flushed.
*/
return 0;
default :
windows_errno(error);
return -1;
}
}
return 0;
}
int windows_futimens(int fd, struct windows_timespec tv[2])
{
HANDLE h;
FILETIME ft;
uint64_t mtime;
if (fd == -1) {
errno = EBADF;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
/*
* Convert to windows time
*
* How To Convert a UNIX time_t to a Win32 FILETIME or SYSTEMTIME
* http://support.microsoft.com/kb/167296
*/
mtime = tv[0].tv_sec;
mtime *= 10000000;
mtime += tv[0].tv_nsec / 100;
mtime += 116444736000000000;
ft.dwHighDateTime = mtime >> 32;
ft.dwLowDateTime = mtime;
if (!SetFileTime(h, 0, 0, &ft)) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
int windows_utimensat(int fd, const char* file, struct windows_timespec tv[2], int flags)
{
wchar_t conv_buf[CONV_MAX];
HANDLE h;
FILETIME ft;
uint64_t mtime;
DWORD wflags;
/*
* Support only the absolute paths
*/
if (fd != AT_FDCWD) {
errno = EBADF;
return -1;
}
/*
* Open the handle of the file.
*
* Use FILE_FLAG_BACKUP_SEMANTICS to open directories (it's just ignored for files).
* Use FILE_FLAG_OPEN_REPARSE_POINT to open symbolic links and not the their target.
*
* Note that even with FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
* and FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT some paths
* cannot be opened like "C:\System Volume Information" resulting
* in error ERROR_ACCESS_DENIED.
*/
wflags = FILE_FLAG_BACKUP_SEMANTICS;
if ((flags & AT_SYMLINK_NOFOLLOW) != 0)
wflags |= FILE_FLAG_OPEN_REPARSE_POINT;
h = CreateFileW(convert(conv_buf, file), FILE_WRITE_ATTRIBUTES, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, wflags, 0);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
/*
* Convert to windows time
*
* How To Convert a UNIX time_t to a Win32 FILETIME or SYSTEMTIME
* http://support.microsoft.com/kb/167296
*/
mtime = tv[0].tv_sec;
mtime *= 10000000;
mtime += tv[0].tv_nsec / 100;
mtime += 116444736000000000;
ft.dwHighDateTime = mtime >> 32;
ft.dwLowDateTime = mtime;
if (!SetFileTime(h, 0, 0, &ft)) {
windows_errno(GetLastError());
CloseHandle(h);
return -1;
}
if (!CloseHandle(h)) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
int windows_rename(const char* from, const char* to)
{
wchar_t conv_buf_from[CONV_MAX];
wchar_t conv_buf_to[CONV_MAX];
/*
* Implements an atomic rename in Windows.
* Not really atomic at now to support XP.
*
* Is an atomic file rename (with overwrite) possible on Windows?
* http://stackoverflow.com/questions/167414/is-an-atomic-file-rename-with-overwrite-possible-on-windows
*/
if (!MoveFileExW(convert(conv_buf_from, from), convert(conv_buf_to, to), MOVEFILE_REPLACE_EXISTING)) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
int windows_remove(const char* file)
{
wchar_t conv_buf[CONV_MAX];
if (!DeleteFileW(convert(conv_buf, file))) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
FILE* windows_fopen(const char* file, const char* mode)
{
wchar_t conv_buf_file[CONV_MAX];
wchar_t conv_buf_mode[CONV_MAX];
return _wfopen(convert(conv_buf_file, file), u8tou16(conv_buf_mode, mode));
}
int windows_open(const char* file, int flags, ...)
{
wchar_t conv_buf[CONV_MAX];
HANDLE h;
int f;
DWORD access;
DWORD share;
DWORD create;
DWORD attr;
switch (flags & O_ACCMODE) {
case O_RDONLY :
access = GENERIC_READ;
break;
case O_WRONLY :
access = GENERIC_WRITE;
break;
case O_RDWR :
access = GENERIC_READ | GENERIC_WRITE;
break;
default:
errno = EINVAL;
return -1;
}
share = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
switch (flags & (O_CREAT | O_EXCL | O_TRUNC)) {
case 0 :
create = OPEN_EXISTING;
break;
case O_CREAT :
create = OPEN_ALWAYS;
break;
case O_CREAT | O_EXCL :
case O_CREAT | O_EXCL | O_TRUNC :
create = CREATE_NEW;
break;
case O_CREAT | O_TRUNC :
create = CREATE_ALWAYS;
break;
case O_TRUNC :
create = TRUNCATE_EXISTING;
break;
default:
errno = EINVAL;
return -1;
}
attr = FILE_ATTRIBUTE_NORMAL;
if ((flags & O_DIRECT) != 0)
attr |= FILE_FLAG_NO_BUFFERING;
if ((flags & O_DSYNC) != 0)
attr |= FILE_FLAG_WRITE_THROUGH;
if ((flags & O_RANDOM) != 0)
attr |= FILE_FLAG_RANDOM_ACCESS;
if ((flags & O_SEQUENTIAL) != 0)
attr |= FILE_FLAG_SEQUENTIAL_SCAN;
if ((flags & _O_SHORT_LIVED) != 0)
attr |= FILE_ATTRIBUTE_TEMPORARY;
if ((flags & O_TEMPORARY) != 0)
attr |= FILE_FLAG_DELETE_ON_CLOSE;
h = CreateFileW(convert(conv_buf, file), access, share, 0, create, attr, 0);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
/* mask out flags unknown by Windows */
flags &= ~(O_DIRECT | O_DSYNC);
f = _open_osfhandle((intptr_t)h, flags);
if (f == -1) {
CloseHandle(h);
return -1;
}
return f;
}
struct windows_dir_struct {
BY_HANDLE_FILE_INFORMATION info;
WIN32_FIND_DATAW find;
HANDLE h;
struct windows_dirent entry;
unsigned char* buffer;
unsigned buffer_size;
unsigned buffer_pos;
int state;
};
#define DIR_STATE_EOF -1 /**< End of the dir stream */
#define DIR_STATE_EMPTY 0 /**< The entry is empty. */
#define DIR_STATE_FILLED 1 /**< The entry is valid. */
static windows_dir* windows_opendir_find(const char* dir)
{
wchar_t conv_buf[CONV_MAX];
wchar_t* wdir;
windows_dir* dirstream;
size_t len;
dirstream = malloc(sizeof(windows_dir));
if (!dirstream) {
log_fatal("Low memory\n");
exit(EXIT_FAILURE);
}
wdir = convert(conv_buf, dir);
/* add final / and * */
len = wcslen(wdir);
if (len != 0 && wdir[len - 1] != '\\')
wdir[len++] = L'\\';
wdir[len++] = L'*';
wdir[len++] = 0;
dirstream->h = FindFirstFileW(wdir, &dirstream->find);
if (dirstream->h == INVALID_HANDLE_VALUE) {
DWORD error = GetLastError();
if (error == ERROR_FILE_NOT_FOUND) {
dirstream->state = DIR_STATE_EOF;
return dirstream;
}
free(dirstream);
windows_errno(error);
return 0;
}
windows_finddata2dirent(&dirstream->find, &dirstream->entry);
dirstream->state = DIR_STATE_FILLED;
return dirstream;
}
static struct windows_dirent* windows_readdir_find(windows_dir* dirstream)
{
if (dirstream->state == DIR_STATE_EMPTY) {
if (!FindNextFileW(dirstream->h, &dirstream->find)) {
DWORD error = GetLastError();
if (error != ERROR_NO_MORE_FILES) {
windows_errno(error);
return 0;
}
dirstream->state = DIR_STATE_EOF;
} else {
windows_finddata2dirent(&dirstream->find, &dirstream->entry);
dirstream->state = DIR_STATE_FILLED;
}
}
if (dirstream->state == DIR_STATE_FILLED) {
dirstream->state = DIR_STATE_EMPTY;
return &dirstream->entry;
}
/* otherwise it's the end of stream */
assert(dirstream->state == DIR_STATE_EOF);
errno = 0;
return 0;
}
static int windows_closedir_find(windows_dir* dirstream)
{
if (dirstream->h != INVALID_HANDLE_VALUE) {
if (!FindClose(dirstream->h)) {
DWORD error = GetLastError();
free(dirstream);
windows_errno(error);
return -1;
}
}
free(dirstream);
return 0;
}
static int windows_first_stream(windows_dir* dirstream)
{
FILE_ID_BOTH_DIR_INFO* fd;
if (!GetFileInformationByHandleEx(dirstream->h, FileIdBothDirectoryInfo, dirstream->buffer, dirstream->buffer_size)) {
DWORD error = GetLastError();
if (error == ERROR_NO_MORE_FILES) {
dirstream->state = DIR_STATE_EOF;
return 0;
}
windows_errno(error);
return -1;
}
/* get the first entry */
dirstream->state = DIR_STATE_FILLED;
dirstream->buffer_pos = 0;
fd = (FILE_ID_BOTH_DIR_INFO*)dirstream->buffer;
return windows_stream2dirent(&dirstream->info, fd, &dirstream->entry);
}
static int windows_next_stream(windows_dir* dirstream)
{
FILE_ID_BOTH_DIR_INFO* fd;
/* last entry read */
fd = (FILE_ID_BOTH_DIR_INFO*)(dirstream->buffer + dirstream->buffer_pos);
/* check if there is a next one */
if (fd->NextEntryOffset == 0) {
/* if not, fill it up again */
if (windows_first_stream(dirstream) != 0)
return -1;
return 0;
}
/* go to the next one */
dirstream->state = DIR_STATE_FILLED;
dirstream->buffer_pos += fd->NextEntryOffset;
fd = (FILE_ID_BOTH_DIR_INFO*)(dirstream->buffer + dirstream->buffer_pos);
return windows_stream2dirent(&dirstream->info, fd, &dirstream->entry);
}
static windows_dir* windows_opendir_stream(const char* dir)
{
wchar_t conv_buf[CONV_MAX];
windows_dir* dirstream;
WCHAR* wdir;
dirstream = malloc(sizeof(windows_dir));
if (!dirstream) {
log_fatal("Low memory\n");
exit(EXIT_FAILURE);
}
wdir = convert(conv_buf, dir);
/* uses a 64 kB buffer for reading directory */
dirstream->buffer_size = 64 * 1024;
dirstream->buffer = malloc(dirstream->buffer_size);
if (!dirstream->buffer) {
log_fatal("Low memory\n");
exit(EXIT_FAILURE);
}
dirstream->h = CreateFileW(wdir, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
if (dirstream->h == INVALID_HANDLE_VALUE) {
DWORD error = GetLastError();
free(dirstream->buffer);
free(dirstream);
windows_errno(error);
return 0;
}
/* get dir information for the VolumeSerialNumber */
/* this value is used for all the files in the dir */
if (!GetFileInformationByHandle(dirstream->h, &dirstream->info)) {
DWORD error = GetLastError();
CloseHandle(dirstream->h);
free(dirstream->buffer);
free(dirstream);
windows_errno(error);
return 0;
}
if (windows_first_stream(dirstream) != 0) {
CloseHandle(dirstream->h);
free(dirstream->buffer);
free(dirstream);
return 0;
}
return dirstream;
}
static struct windows_dirent* windows_readdir_stream(windows_dir* dirstream)
{
if (dirstream->state == DIR_STATE_EMPTY) {
if (windows_next_stream(dirstream) != 0) {
free(dirstream->buffer);
free(dirstream);
return 0;
}
}
if (dirstream->state == DIR_STATE_FILLED) {
dirstream->state = DIR_STATE_EMPTY;
return &dirstream->entry;
}
/* otherwise it's the end of stream */
assert(dirstream->state == DIR_STATE_EOF);
errno = 0;
return 0;
}
static int windows_closedir_stream(windows_dir* dirstream)
{
if (dirstream->h != INVALID_HANDLE_VALUE) {
if (!CloseHandle(dirstream->h)) {
DWORD error = GetLastError();
free(dirstream->buffer);
free(dirstream);
windows_errno(error);
return -1;
}
}
free(dirstream->buffer);
free(dirstream);
return 0;
}
windows_dir* windows_opendir(const char* dir)
{
if (!is_scan_winfind)
return windows_opendir_stream(dir);
else
return windows_opendir_find(dir);
}
struct windows_dirent* windows_readdir(windows_dir* dirstream)
{
if (!is_scan_winfind)
return windows_readdir_stream(dirstream);
else
return windows_readdir_find(dirstream);
}
int windows_closedir(windows_dir* dirstream)
{
if (!is_scan_winfind)
return windows_closedir_stream(dirstream);
else
return windows_closedir_find(dirstream);
}
int windows_dirent_hidden(struct dirent* dd)
{
return dd->d_stat.st_hidden;
}
const char* windows_stat_desc(struct stat* st)
{
return st->st_desc;
}
void windows_sleep(unsigned seconds)
{
Sleep(seconds * 1000);
}
int windows_link(const char* existing, const char* file)
{
wchar_t conv_buf_file[CONV_MAX];
wchar_t conv_buf_existing[CONV_MAX];
if (!CreateHardLinkW(convert(conv_buf_file, file), convert(conv_buf_existing, existing), 0)) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
/**
* In Windows 10 allow creation of symblink by not privileged user.
*
* See: Symlinks in Windows 10!
* https://blogs.windows.com/buildingapps/2016/12/02/symlinks-windows-10/#cQG7cx48oGH86lkI.97
* "Specify this flag to allow creation of symbolic links when the process is not elevated"
*/
#ifndef SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
#define SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE 0x2
#endif
int windows_symlink(const char* existing, const char* file)
{
wchar_t conv_buf_file[CONV_MAX];
wchar_t conv_buf_existing[CONV_MAX];
/* We must convert to the extended-length \\?\ format if the path is too long */
/* otherwise the link creation fails. */
/* But we don't want to always convert it, to avoid to recreate */
/* user symlinks different than they were before */
if (!CreateSymbolicLinkW(convert(conv_buf_file, file), convert_if_required(conv_buf_existing, existing),
SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE)
) {
DWORD error = GetLastError();
if (GetLastError() != ERROR_INVALID_PARAMETER) {
windows_errno(error);
return -1;
}
/* retry without the new flag SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE */
if (!CreateSymbolicLinkW(convert(conv_buf_file, file), convert_if_required(conv_buf_existing, existing), 0)) {
windows_errno(GetLastError());
return -1;
}
}
return 0;
}
/* Adds missing definitions in MingW winnt.h */
#ifndef FSCTL_GET_REPARSE_POINT
#define FSCTL_GET_REPARSE_POINT 0x000900a8
#endif
#ifndef REPARSE_DATA_BUFFER_HEADER_SIZE
typedef struct _REPARSE_DATA_BUFFER {
DWORD ReparseTag;
WORD ReparseDataLength;
WORD Reserved;
_ANONYMOUS_UNION union {
struct {
WORD SubstituteNameOffset;
WORD SubstituteNameLength;
WORD PrintNameOffset;
WORD PrintNameLength;
ULONG Flags;
WCHAR PathBuffer[1];
} SymbolicLinkReparseBuffer;
struct {
WORD SubstituteNameOffset;
WORD SubstituteNameLength;
WORD PrintNameOffset;
WORD PrintNameLength;
WCHAR PathBuffer[1];
} MountPointReparseBuffer;
struct {
BYTE DataBuffer[1];
} GenericReparseBuffer;
} DUMMYUNIONNAME;
} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
#endif
int windows_readlink(const char* file, char* buffer, size_t size)
{
wchar_t conv_buf_file[CONV_MAX];
char conv_buf_name[CONV_MAX];
HANDLE h;
const char* name;
size_t len;
unsigned char rdb_buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
REPARSE_DATA_BUFFER* rdb = (REPARSE_DATA_BUFFER*)rdb_buffer;
BOOL ret;
DWORD n;
/*
* Open the handle of the file.
*
* Use FILE_FLAG_BACKUP_SEMANTICS to open directories (it's just ignored for files).
* Use FILE_FLAG_OPEN_REPARSE_POINT to open symbolic links and not the their target.
*/
h = CreateFileW(convert(conv_buf_file, file), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 0);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
/* read the reparse point */
ret = DeviceIoControl(h, FSCTL_GET_REPARSE_POINT, 0, 0, rdb_buffer, sizeof(rdb_buffer), &n, 0);
if (!ret) {
windows_errno(GetLastError());
CloseHandle(h);
return -1;
}
CloseHandle(h);
/* check if it's really a symbolic link */
if (rdb->ReparseTag != IO_REPARSE_TAG_SYMLINK) {
errno = EINVAL;
return -1;
}
/* convert the name to UTF-8 */
name = u16tou8ex(conv_buf_name,
rdb->SymbolicLinkReparseBuffer.PathBuffer + rdb->SymbolicLinkReparseBuffer.PrintNameOffset,
rdb->SymbolicLinkReparseBuffer.PrintNameLength / 2, &len);
/* check for overflow */
if (len > size) {
len = size;
}
memcpy(buffer, name, len);
return len;
}
int devuuid(uint64_t device, char* uuid, size_t uuid_size)
{
/* just use the volume serial number returned in the device parameter */
snprintf(uuid, uuid_size, "%08x", (unsigned)device);
log_tag("uuid:windows:%u:%s:\n", (unsigned)device, uuid);
return 0;
}
int filephy(const char* file, uint64_t size, uint64_t* physical)
{
wchar_t conv_buf[CONV_MAX];
HANDLE h;
(void)size;
/* open the handle of the file */
h = CreateFileW(convert(conv_buf, file), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, 0, 0);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
if (!GetFilePhysicalOffset(h, physical)) {
DWORD error = GetLastError();
CloseHandle(h);
windows_errno(error);
return -1;
}
CloseHandle(h);
return 0;
}
int fsinfo(const char* path, int* has_persistent_inode, int* has_syncronized_hardlinks, uint64_t* total_space, uint64_t* free_space)
{
wchar_t conv_buf[CONV_MAX];
/* all FAT/exFAT/NTFS when managed from Windows have persistent inodes */
if (has_persistent_inode)
*has_persistent_inode = 1;
/* NTFS doesn't synchronize hardlinks metadata */
if (has_syncronized_hardlinks)
*has_syncronized_hardlinks = 0;
if (free_space || total_space) {
ULARGE_INTEGER total_bytes;
ULARGE_INTEGER total_free_bytes;
DWORD attr;
char dir[PATH_MAX];
if (strlen(path) + 1 > sizeof(dir)) {
windows_errno(ERROR_BUFFER_OVERFLOW);
return -1;
}
strcpy(dir, path);
/* get the file attributes */
attr = GetFileAttributesW(convert(conv_buf, dir));
if (attr == INVALID_FILE_ATTRIBUTES) {
DWORD error = GetLastError();
if (error != ERROR_FILE_NOT_FOUND) {
windows_errno(error);
return -1;
}
/* if it doesn't exist, we assume a file */
/* and we check for the containing dir */
attr = 0;
}
/* if it's not a directory, truncate the file name */
if ((attr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
char* slash = strrchr(dir, '/');
/**
* Cut the file name, but leave the last slash.
*
* This is done because a MSDN comment about using of UNC paths.
*
* MSDN 'GetDiskFreeSpaceEx function'
* http://msdn.microsoft.com/en-us/library/windows/desktop/aa364937%28v=vs.85%29.aspx
* If this parameter is a UNC name, it must include a trailing backslash,
* for example, "\\MyServer\MyShare\".
*/
if (slash)
slash[1] = 0;
}
/* get the free space of the directory */
/* note that it must be a directory */
if (!GetDiskFreeSpaceExW(convert(conv_buf, dir), 0, &total_bytes, &total_free_bytes)) {
windows_errno(GetLastError());
return -1;
}
if (total_space)
*total_space = total_bytes.QuadPart;
if (free_space)
*free_space = total_free_bytes.QuadPart;
}
return 0;
}
/* ensure to call the real C strerror() */
#undef strerror
const char* windows_strerror(int err)
{
/* get the normal C error from the specified err */
char* error;
char* previous;
const char* str = strerror(err);
size_t len = strlen(str);
/* adds space for GetLastError() */
len += 32;
/* allocate a new one */
error = malloc(len);
if (!error)
return str;
snprintf(error, len, "%s [%d/%u]", str, err, (unsigned)GetLastError());
/* get previous one, if any */
previous = windows_getspecific(last_error);
/* store in the thread local storage */
if (windows_setspecific(last_error, error) != 0) {
free(error);
return str;
}
free(previous);
return error;
}
ssize_t windows_read(int fd, void* buffer, size_t size)
{
HANDLE h;
DWORD count;
if (fd == -1) {
errno = EBADF;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
if (!ReadFile(h, buffer, size, &count, 0)) {
windows_errno(GetLastError());
return -1;
}
return count;
}
ssize_t windows_write(int fd, const void* buffer, size_t size)
{
HANDLE h;
DWORD count;
if (fd == -1) {
errno = EBADF;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
if (!WriteFile(h, buffer, size, &count, 0)) {
windows_errno(GetLastError());
return -1;
}
return count;
}
off_t windows_lseek(int fd, off_t offset, int whence)
{
HANDLE h;
LARGE_INTEGER pos;
LARGE_INTEGER ret;
if (fd == -1) {
errno = EBADF;
return -1;
}
/* we support only SEEK_SET */
if (whence != SEEK_SET) {
errno = EINVAL;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
pos.QuadPart = offset;
if (!SetFilePointerEx(h, pos, &ret, FILE_BEGIN)) {
windows_errno(GetLastError());
return -1;
}
return ret.QuadPart;
}
ssize_t windows_pread(int fd, void* buffer, size_t size, off_t offset)
{
HANDLE h;
OVERLAPPED overlapped;
DWORD count;
if (fd == -1) {
errno = EBADF;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
retry:
memset(&overlapped, 0, sizeof(overlapped));
overlapped.Offset = offset & 0xFFFFFFFF;
overlapped.OffsetHigh = offset >> 32;
if (!ReadFile(h, buffer, size, &count, &overlapped)) {
DWORD err = GetLastError();
/*
* If Windows is not able to allocate memory from the PagedPool for the disk cache
* it could return the ERROR_NO_SYSTEM_RESOURCES error.
* In this case, the only possibility is to retry after a wait of few milliseconds.
*
* SQL Server reports operating system error 1450 or 1452 or 665 (retries)
* http://blogs.msdn.com/b/psssql/archive/2008/07/10/sql-server-reports-operating-system-error-1450-or-1452-or-665-retries.aspx
*
* 03-12-09 - ERROR_NO_SYSTEM_RESOURCES
* http://cbloomrants.blogspot.it/2009/03/03-12-09-errornosystemresources.html
*
* From SnapRAID Discussion Forum:
*
* Error reading file
* https://sourceforge.net/p/snapraid/discussion/1677233/thread/6657fdbf/
*
* Unexpected Windows ERROR_NO_SYSTEM_RESOURCES in pwrite(), retrying...
* https://sourceforge.net/p/snapraid/discussion/1677233/thread/a7c25ba9/
*/
if (err == ERROR_NO_SYSTEM_RESOURCES) {
log_fatal("Unexpected Windows ERROR_NO_SYSTEM_RESOURCES in pread(), retrying...\n");
Sleep(50);
goto retry;
}
windows_errno(err);
return -1;
}
return count;
}
ssize_t windows_pwrite(int fd, const void* buffer, size_t size, off_t offset)
{
HANDLE h;
OVERLAPPED overlapped;
DWORD count;
if (fd == -1) {
errno = EBADF;
return -1;
}
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
retry:
memset(&overlapped, 0, sizeof(overlapped));
overlapped.Offset = offset & 0xFFFFFFFF;
overlapped.OffsetHigh = offset >> 32;
if (!WriteFile(h, buffer, size, &count, &overlapped)) {
DWORD err = GetLastError();
/* See windows_pread() for comments on this error management */
if (err == ERROR_NO_SYSTEM_RESOURCES) {
log_fatal("Unexpected Windows ERROR_NO_SYSTEM_RESOURCES in pwrite(), retrying...\n");
Sleep(50);
goto retry;
}
windows_errno(err);
return -1;
}
return count;
}
size_t windows_direct_size(void)
{
SYSTEM_INFO si;
GetSystemInfo(&si);
/*
* MSDN 'File Buffering'
* https://msdn.microsoft.com/en-us/library/windows/desktop/cc644950%28v=vs.85%29.aspx
*
* "Therefore, in most situations, page-aligned memory will also be sector-aligned,"
* "because the case where the sector size is larger than the page size is rare."
*/
return si.dwPageSize;
}
uint64_t tick(void)
{
LARGE_INTEGER t;
uint64_t r;
/*
* Ensure to return a strict monotone tick counter.
*
* We had reports of invalid stats due faulty High Precision Event Timer.
* See: https://sourceforge.net/p/snapraid/discussion/1677233/thread/a2122fd6/
*/
windows_mutex_lock(&tick_lock);
/*
* MSDN 'QueryPerformanceCounter'
* "On systems that run Windows XP or later, the function"
* "will always succeed and will thus never return zero."
*/
r = 0;
if (QueryPerformanceCounter(&t))
r = t.QuadPart;
if (r < tick_last)
r = tick_last;
tick_last = r;
windows_mutex_unlock(&tick_lock);
return r;
}
uint64_t tick_ms(void)
{
/* GetTickCount64() isn't supported in Windows XP */
if (ptr_GetTickCount64 != 0)
return ptr_GetTickCount64();
return GetTickCount();
}
int randomize(void* void_ptr, size_t size)
{
size_t i;
unsigned char* ptr = void_ptr;
/* try RtlGenRandom */
if (ptr_RtlGenRandom != 0 && ptr_RtlGenRandom(ptr, size) != 0)
return 0;
/* try rand_s */
for (i = 0; i < size; ++i) {
unsigned v = 0;
if (rand_s(&v) != 0)
break;
ptr[i] = v;
}
if (i == size)
return 0;
/* fallback to standard rand */
for (i = 0; i < size; ++i)
ptr[i] = rand();
return 0;
}
/**
* Get the device file from a path inside the device.
*/
static int devresolve(const char* mount, char* file, size_t file_size, char* wfile, size_t wfile_size)
{
wchar_t conv_buf_mount[CONV_MAX];
char conv_buf_volume_guid[CONV_MAX];
WCHAR volume_mount[MAX_PATH];
WCHAR volume_guid[MAX_PATH];
DWORD i;
char* p;
/* get the volume mount point from the disk path */
if (!GetVolumePathNameW(convert(conv_buf_mount, mount), volume_mount, sizeof(volume_mount) / sizeof(WCHAR))) {
windows_errno(GetLastError());
return -1;
}
/* get the volume GUID path from the mount point */
if (!GetVolumeNameForVolumeMountPointW(volume_mount, volume_guid, sizeof(volume_guid) / sizeof(WCHAR))) {
windows_errno(GetLastError());
return -1;
}
/* remove the final slash, otherwise CreateFile() opens the file-system */
/* and not the volume */
i = 0;
while (volume_guid[i] != 0)
++i;
if (i != 0 && volume_guid[i - 1] == '\\')
volume_guid[i - 1] = 0;
pathcpy(wfile, wfile_size, u16tou8(conv_buf_volume_guid, volume_guid));
/* get the GUID start { */
p = strchr(wfile, '{');
if (!p)
p = wfile;
else
++p;
pathprint(file, file_size, "/dev/vol%s", p);
/* cut GUID end } */
p = strrchr(file, '}');
if (p)
*p = 0;
return 0;
}
/**
* Read a device tree filling the specified list of disk_t entries.
*/
static int devtree(const char* name, const char* custom, const char* wfile, devinfo_t* parent, tommy_list* list)
{
wchar_t conv_buf[CONV_MAX];
HANDLE h;
unsigned char vde_buffer[sizeof(VOLUME_DISK_EXTENTS)];
VOLUME_DISK_EXTENTS* vde = (VOLUME_DISK_EXTENTS*)&vde_buffer;
unsigned vde_size = sizeof(vde_buffer);
void* vde_alloc = 0;
BOOL ret;
DWORD n;
DWORD i;
/* open the volume */
h = CreateFileW(convert(conv_buf, wfile), 0, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0);
if (h == INVALID_HANDLE_VALUE) {
windows_errno(GetLastError());
return -1;
}
/* get the physical extents of the volume */
ret = DeviceIoControl(h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, 0, 0, vde, vde_size, &n, 0);
if (!ret) {
DWORD error = GetLastError();
if (error != ERROR_MORE_DATA) {
CloseHandle(h);
windows_errno(error);
}
/* more than one extends, allocate more space */
vde_size = sizeof(VOLUME_DISK_EXTENTS) + vde->NumberOfDiskExtents * sizeof(DISK_EXTENT);
vde_alloc = malloc_nofail(vde_size);
vde = vde_alloc;
/* retry with more space */
ret = DeviceIoControl(h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, 0, 0, vde, vde_size, &n, 0);
}
if (!ret) {
DWORD error = GetLastError();
CloseHandle(h);
windows_errno(error);
return -1;
}
for (i = 0; i < vde->NumberOfDiskExtents; ++i) {
devinfo_t* devinfo;
devinfo = calloc_nofail(1, sizeof(devinfo_t));
pathcpy(devinfo->name, sizeof(devinfo->name), name);
pathcpy(devinfo->smartctl, sizeof(devinfo->smartctl), custom);
devinfo->device = vde->Extents[i].DiskNumber;
pathprint(devinfo->file, sizeof(devinfo->file), "/dev/pd%" PRIu64, devinfo->device);
pathprint(devinfo->wfile, sizeof(devinfo->wfile), "\\\\.\\PhysicalDrive%" PRIu64, devinfo->device);
devinfo->parent = parent;
/* insert in the list */
tommy_list_insert_tail(list, &devinfo->node, devinfo);
}
if (!CloseHandle(h)) {
windows_errno(GetLastError());
return -1;
}
free(vde_alloc);
return 0;
}
/**
* Read smartctl --scan from a stream.
* Return 0 on success.
*/
static int smartctl_scan(FILE* f, tommy_list* list)
{
while (1) {
char buf[256];
char* s;
s = fgets(buf, sizeof(buf), f);
if (s == 0)
break;
/* remove extraneous chars */
s = strpolish(buf);
log_tag("smartctl:scan::text: %s\n", s);
if (*s == '/') {
char* sep = strchr(s, ' ');
if (sep) {
tommy_node* i;
const char* number;
uint64_t device;
/* clear everything after the first space */
*sep = 0;
/* get the device number from the device file */
/* note that this is Windows specific */
/* for the format /dev/pdX of smartmontools */
number = s;
while (*number != 0 && !isdigit(*number))
++number;
device = atoi(number);
/* check if already present */
/* comparing the device file */
for (i = tommy_list_head(list); i != 0; i = i->next) {
devinfo_t* devinfo = i->data;
if (devinfo->device == device)
break;
}
/* if not found */
if (i == 0) {
devinfo_t* devinfo;
devinfo = calloc_nofail(1, sizeof(devinfo_t));
devinfo->device = device;
pathprint(devinfo->file, sizeof(devinfo->file), "/dev/pd%" PRIu64, devinfo->device);
pathprint(devinfo->wfile, sizeof(devinfo->wfile), "\\\\.\\PhysicalDrive%" PRIu64, devinfo->device);
/* insert in the list */
tommy_list_insert_tail(list, &devinfo->node, devinfo);
}
}
}
}
return 0;
}
/**
* Scan all the devices.
*/
static int devscan(tommy_list* list)
{
char conv_buf[CONV_MAX];
WCHAR cmd[MAX_PATH + 128];
FILE* f;
int ret;
snwprintf(cmd, sizeof(cmd), L"\"%lssmartctl.exe\" --scan-open -d pd", exedir);
log_tag("smartctl:scan::run: %s\n", u16tou8(conv_buf, cmd));
f = _wpopen(cmd, L"rt");
if (!f) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' (from popen).\n", u16tou8(conv_buf, cmd));
return -1;
/* LCOV_EXCL_STOP */
}
if (smartctl_scan(f, list) != 0) {
/* LCOV_EXCL_START */
pclose(f);
return -1;
/* LCOV_EXCL_STOP */
}
ret = pclose(f);
log_tag("smartctl:scan::ret: %x\n", ret);
if (ret == -1) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' (from pclose).\n", u16tou8(conv_buf, cmd));
return -1;
/* LCOV_EXCL_STOP */
}
if (ret != 0) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' with return code %xh.\n", u16tou8(conv_buf, cmd), ret);
return -1;
/* LCOV_EXCL_STOP */
}
return 0;
}
/**
* Get SMART attributes.
*/
static int devsmart(uint64_t device, const char* name, const char* custom, uint64_t* smart, char* serial, char* vendor, char* model)
{
char conv_buf[CONV_MAX];
WCHAR cmd[MAX_PATH + 128];
char file[128];
FILE* f;
int ret;
int count;
snprintf(file, sizeof(file), "/dev/pd%" PRIu64, device);
/* if there is a custom command */
if (custom[0]) {
char option[128];
snprintf(option, sizeof(option), custom, file);
snwprintf(cmd, sizeof(cmd), L"\"%lssmartctl.exe\" -a %s", exedir, option);
} else {
snwprintf(cmd, sizeof(cmd), L"\"%lssmartctl.exe\" -a %s", exedir, file);
}
count = 0;
retry:
log_tag("smartctl:%s:%s:run: %s\n", file, name, u16tou8(conv_buf, cmd));
f = _wpopen(cmd, L"rt");
if (!f) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' (from popen).\n", u16tou8(conv_buf, cmd));
return -1;
/* LCOV_EXCL_STOP */
}
if (smartctl_attribute(f, file, name, smart, serial, vendor, model) != 0) {
/* LCOV_EXCL_START */
pclose(f);
return -1;
/* LCOV_EXCL_STOP */
}
ret = pclose(f);
log_tag("smartctl:%s:%s:ret: %x\n", file, name, ret);
if (ret == -1) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' (from pclose).\n", u16tou8(conv_buf, cmd));
return -1;
/* LCOV_EXCL_STOP */
}
/* if first try without custom command */
if (count == 0 && custom[0] == 0) {
/*
* Handle some common cases in Windows.
*
* Sometimes the "type" autodetection is wrong, and the command fails at identification
* stage, returning with error 2, or even with error 0, and with no info at all.
* We detect this condition checking the PowerOnHours, Size and RotationRate attributes.
*
* In such conditions we retry using the "sat" type, that often allows to proceed.
*
* Note that getting error 4 is instead very common, even with full info gathering.
*/
if ((ret == 0 || ret == 2)
&& smart[9] == SMART_UNASSIGNED
&& smart[SMART_SIZE] == SMART_UNASSIGNED
&& smart[SMART_ROTATION_RATE] == SMART_UNASSIGNED
) {
/* retry using the "sat" type */
snwprintf(cmd, sizeof(cmd), L"\"%lssmartctl.exe\" -a -d sat %s", exedir, file);
++count;
goto retry;
}
}
/* store the smartctl return value */
smart[SMART_FLAGS] = ret;
return 0;
}
/**
* Spin down a specific device.
*/
static int devdown(uint64_t device, const char* name, const char* custom)
{
char conv_buf[CONV_MAX];
WCHAR cmd[MAX_PATH + 128];
char file[128];
FILE* f;
int ret;
int count;
snprintf(file, sizeof(file), "/dev/pd%" PRIu64, device);
/* if there is a custom command */
if (custom[0]) {
char option[128];
snprintf(option, sizeof(option), custom, file);
snwprintf(cmd, sizeof(cmd), L"\"%lssmartctl.exe\" -s standby,now %s", exedir, option);
} else {
snwprintf(cmd, sizeof(cmd), L"\"%lssmartctl.exe\" -s standby,now %s", exedir, file);
}
count = 0;
retry:
log_tag("smartctl:%s:%s:run: %s\n", file, name, u16tou8(conv_buf, cmd));
f = _wpopen(cmd, L"rt");
if (!f) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' (from popen).\n", u16tou8(conv_buf, cmd));
return -1;
/* LCOV_EXCL_STOP */
}
if (smartctl_flush(f, file, name) != 0) {
/* LCOV_EXCL_START */
pclose(f);
return -1;
/* LCOV_EXCL_STOP */
}
ret = pclose(f);
log_tag("smartctl:%s:%s:ret: %x\n", file, name, ret);
if (ret == -1) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' (from pclose).\n", u16tou8(conv_buf, cmd));
return -1;
/* LCOV_EXCL_STOP */
}
/* if first try without custom command */
if (count == 0 && custom[0] == 0) {
/*
* Handle some common cases in Windows.
*
* Sometimes the "type" autodetection is wrong, and the command fails at identification
* stage, returning with error 2.
*
* In such conditions we retry using the "sat" type, that often allows to proceed.
*/
if (ret == 2) {
/* retry using the "sat" type */
snwprintf(cmd, sizeof(cmd), L"\"%lssmartctl.exe\" -s standby,now -d sat %s", exedir, file);
++count;
goto retry;
}
}
if (ret != 0) {
/* LCOV_EXCL_START */
log_fatal("Failed to run '%s' with return code %xh.\n", u16tou8(conv_buf, cmd), ret);
return -1;
/* LCOV_EXCL_STOP */
}
return 0;
}
/**
* Spin up a device.
*
* There isn't a defined way to spin up a device,
* so we just do a generic write.
*/
static int devup(const char* mount)
{
wchar_t conv_buf[CONV_MAX];
int f;
char path[PATH_MAX];
/* add a temporary name used for writing */
pathprint(path, sizeof(path), "%s.snapraid-spinup.tmp", mount);
/* create a temporary file, automatically deleted on close */
f = _wopen(convert(conv_buf, path), _O_CREAT | _O_TEMPORARY | _O_RDWR, _S_IREAD | _S_IWRITE);
if (f != -1)
close(f);
return 0;
}
/**
* Thread for spinning up.
*
* Note that filling up the devinfo object is done inside this thread,
* to avoid to block the main thread if the device need to be spin up
* to handle stat/resolve requests.
*/
static void* thread_spinup(void* arg)
{
devinfo_t* devinfo = arg;
struct stat st;
uint64_t start;
start = tick_ms();
/* uses lstat_sync() that maps to CreateFile */
/* we cannot use FindFirstFile because it doesn't allow to open the root dir */
if (lstat_sync(devinfo->mount, &st, 0) != 0) {
/* LCOV_EXCL_START */
log_fatal("Failed to stat path '%s'. %s.\n", devinfo->mount, strerror(errno));
return (void*)-1;
/* LCOV_EXCL_STOP */
}
/* set the device number */
devinfo->device = st.st_dev;
if (devresolve(devinfo->mount, devinfo->file, sizeof(devinfo->file), devinfo->wfile, sizeof(devinfo->wfile)) != 0) {
/* LCOV_EXCL_START */
log_fatal("Failed to resolve path '%s'.\n", devinfo->mount);
return (void*)-1;
/* LCOV_EXCL_STOP */
}
if (devup(devinfo->mount) != 0) {
/* LCOV_EXCL_START */
return (void*)-1;
/* LCOV_EXCL_STOP */
}
msg_status("Spunup device '%s' for disk '%s' in %" PRIu64 " ms.\n", devinfo->file, devinfo->name, tick_ms() - start);
return 0;
}
/**
* Thread for spinning down.
*/
static void* thread_spindown(void* arg)
{
devinfo_t* devinfo = arg;
uint64_t start;
start = tick_ms();
if (devdown(devinfo->device, devinfo->name, devinfo->smartctl) != 0) {
/* LCOV_EXCL_START */
return (void*)-1;
/* LCOV_EXCL_STOP */
}
msg_status("Spundown device '%s' for disk '%s' in %" PRIu64 " ms.\n", devinfo->file, devinfo->name, tick_ms() - start);
return 0;
}
/**
* Thread for getting smart info.
*/
static void* thread_smart(void* arg)
{
devinfo_t* devinfo = arg;
if (devsmart(devinfo->device, devinfo->name, devinfo->smartctl, devinfo->smart, devinfo->smart_serial, devinfo->smart_vendor, devinfo->smart_model) != 0) {
/* LCOV_EXCL_START */
return (void*)-1;
/* LCOV_EXCL_STOP */
}
return 0;
}
static int device_thread(tommy_list* list, void* (*func)(void* arg))
{
int fail = 0;
tommy_node* i;
/* starts all threads */
for (i = tommy_list_head(list); i != 0; i = i->next) {
devinfo_t* devinfo = i->data;
thread_create(&devinfo->thread, func, devinfo);
}
/* joins all threads */
for (i = tommy_list_head(list); i != 0; i = i->next) {
devinfo_t* devinfo = i->data;
void* retval;
thread_join(devinfo->thread, &retval);
if (retval != 0)
++fail;
}
if (fail != 0) {
/* LCOV_EXCL_START */
return -1;
/* LCOV_EXCL_STOP */
}
return 0;
}
int devquery(tommy_list* high, tommy_list* low, int operation, int others)
{
tommy_node* i;
void* (*func)(void* arg) = 0;
if (operation != DEVICE_UP) {
/* for each device */
for (i = tommy_list_head(high); i != 0; i = i->next) {
devinfo_t* devinfo = i->data;
if (devresolve(devinfo->mount, devinfo->file, sizeof(devinfo->file), devinfo->wfile, sizeof(devinfo->wfile)) != 0) {
/* LCOV_EXCL_START */
log_fatal("Failed to resolve path '%s'.\n", devinfo->mount);
return -1;
/* LCOV_EXCL_STOP */
}
/* expand the tree of devices */
if (devtree(devinfo->name, devinfo->smartctl, devinfo->wfile, devinfo, low) != 0) {
/* LCOV_EXCL_START */
log_fatal("Failed to expand device '%s'.\n", devinfo->file);
return -1;
/* LCOV_EXCL_STOP */
}
}
}
if (operation == DEVICE_UP) {
/* duplicate the high */
for (i = tommy_list_head(high); i != 0; i = i->next) {
devinfo_t* devinfo = i->data;
devinfo_t* entry;
entry = calloc_nofail(1, sizeof(devinfo_t));
entry->device = devinfo->device;
pathcpy(entry->name, sizeof(entry->name), devinfo->name);
pathcpy(entry->mount, sizeof(entry->mount), devinfo->mount);
/* insert in the high */
tommy_list_insert_tail(low, &entry->node, entry);
}
}
/* add other devices */
if (others) {
if (devscan(low) != 0) {
/* LCOV_EXCL_START */
log_fatal("Failed to list other devices.\n");
return -1;
/* LCOV_EXCL_STOP */
}
}
switch (operation) {
case DEVICE_UP : func = thread_spinup; break;
case DEVICE_DOWN : func = thread_spindown; break;
case DEVICE_SMART : func = thread_smart; break;
}
if (!func)
return 0;
return device_thread(low, func);
}
/****************************************************************************/
/* pthread like interface */
int windows_mutex_init(windows_mutex_t* mutex, void* attr)
{
(void)attr;
InitializeCriticalSection(mutex);
return 0;
}
int windows_mutex_destroy(windows_mutex_t* mutex)
{
DeleteCriticalSection(mutex);
return 0;
}
int windows_mutex_lock(windows_mutex_t* mutex)
{
EnterCriticalSection(mutex);
return 0;
}
int windows_mutex_unlock(windows_mutex_t* mutex)
{
LeaveCriticalSection(mutex);
return 0;
}
int windows_cond_init(windows_cond_t* cond, void* attr)
{
(void)attr;
InitializeConditionVariable(cond);
return 0;
}
int windows_cond_destroy(windows_cond_t* cond)
{
/* note that in Windows there is no DeleteConditionVariable() to call */
(void)cond;
return 0;
}
int windows_cond_signal(windows_cond_t* cond)
{
WakeConditionVariable(cond);
return 0;
}
int windows_cond_broadcast(windows_cond_t* cond)
{
WakeAllConditionVariable(cond);
return 0;
}
int windows_cond_wait(windows_cond_t* cond, windows_mutex_t* mutex)
{
if (!SleepConditionVariableCS(cond, mutex, INFINITE))
return -1;
return 0;
}
struct windows_key_context {
void (* func)(void *);
DWORD key;
tommy_node node;
};
/* list of all keys with destructor */
static tommy_list windows_key_list = { 0 };
int windows_key_create(windows_key_t* key, void(* destructor)(void*))
{
struct windows_key_context* context;
context = malloc(sizeof(struct windows_key_context));
if (!context)
return -1;
context->func = destructor;
context->key = TlsAlloc();
if (context->key == 0xFFFFFFFF) {
windows_errno(GetLastError());
free(context);
return -1;
}
/* insert in the list of destructors */
if (context->func)
tommy_list_insert_tail(&windows_key_list, &context->node, context);
*key = context;
return 0;
}
int windows_key_delete(windows_key_t key)
{
struct windows_key_context* context = key;
/* remove from the list of destructors */
if (context->func)
tommy_list_remove_existing(&windows_key_list, &context->node);
TlsFree(context->key);
free(context);
return 0;
}
void* windows_getspecific(windows_key_t key)
{
struct windows_key_context* context = key;
return TlsGetValue(context->key);
}
int windows_setspecific(windows_key_t key, void* value)
{
struct windows_key_context* context = key;
if (!TlsSetValue(context->key, value)) {
windows_errno(GetLastError());
return -1;
}
return 0;
}
struct windows_thread_context {
HANDLE h;
unsigned id;
void* (* func)(void *);
void* arg;
void* ret;
};
/* forwarder to change the function declaration */
static unsigned __stdcall windows_thread_func(void* arg)
{
struct windows_thread_context* context = arg;
tommy_node* i;
context->ret = context->func(context->arg);
/* call the destructor of all the keys */
i = tommy_list_head(&windows_key_list);
while (i) {
struct windows_key_context* key = i->data;
if (key->func) {
void* value = windows_getspecific(key);
if (value)
key->func(value);
}
i = i->next;
}
return 0;
}
int windows_create(thread_id_t* thread, void* attr, void* (* func)(void *), void* arg)
{
struct windows_thread_context* context;
(void)attr;
context = malloc(sizeof(struct windows_thread_context));
if (!context)
return -1;
context->func = func;
context->arg = arg;
context->ret = 0;
context->h = (void*)_beginthreadex(0, 0, windows_thread_func, context, 0, &context->id);
if (context->h == 0) {
free(context);
return -1;
}
*thread = context;
return 0;
}
int windows_join(thread_id_t thread, void** retval)
{
struct windows_thread_context* context = thread;
if (WaitForSingleObject(context->h, INFINITE) != WAIT_OBJECT_0) {
windows_errno(GetLastError());
return -1;
}
if (!CloseHandle(context->h)) {
windows_errno(GetLastError());
return -1;
}
*retval = context->ret;
free(context);
return 0;
}
#endif
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