diff options
author | 2016-10-07 14:14:08 +0200 | |
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committer | 2016-10-07 14:14:08 +0200 | |
commit | 85f4741fcf642f52ac4fa56f0aff1728727c901b (patch) | |
tree | da8cca02913839152d2eb04c0e85a83018bcaed3 /3rdparty/libuv/src/win/fs.c | |
parent | ff01b716711b97c2fcaa709ea97f7650f106aa10 (diff) |
Remove libuv library (nw)
Diffstat (limited to '3rdparty/libuv/src/win/fs.c')
-rw-r--r-- | 3rdparty/libuv/src/win/fs.c | 2471 |
1 files changed, 0 insertions, 2471 deletions
diff --git a/3rdparty/libuv/src/win/fs.c b/3rdparty/libuv/src/win/fs.c deleted file mode 100644 index 16e3ae7cf1b..00000000000 --- a/3rdparty/libuv/src/win/fs.c +++ /dev/null @@ -1,2471 +0,0 @@ -/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ - -#include <assert.h> -#include <stdlib.h> -#include <direct.h> -#include <errno.h> -#include <fcntl.h> -#include <io.h> -#include <limits.h> -#include <sys/stat.h> -#include <sys/utime.h> -#include <stdio.h> - -#include "uv.h" -#include "internal.h" -#include "req-inl.h" -#include "handle-inl.h" - -#include <wincrypt.h> - - -#define UV_FS_FREE_PATHS 0x0002 -#define UV_FS_FREE_PTR 0x0008 -#define UV_FS_CLEANEDUP 0x0010 - - -#define QUEUE_FS_TP_JOB(loop, req) \ - do { \ - uv__req_register(loop, req); \ - uv__work_submit((loop), &(req)->work_req, uv__fs_work, uv__fs_done); \ - } while (0) - -#define SET_REQ_RESULT(req, result_value) \ - do { \ - req->result = (result_value); \ - if (req->result == -1) { \ - req->sys_errno_ = _doserrno; \ - req->result = uv_translate_sys_error(req->sys_errno_); \ - } \ - } while (0) - -#define SET_REQ_WIN32_ERROR(req, sys_errno) \ - do { \ - req->sys_errno_ = (sys_errno); \ - req->result = uv_translate_sys_error(req->sys_errno_); \ - } while (0) - -#define SET_REQ_UV_ERROR(req, uv_errno, sys_errno) \ - do { \ - req->result = (uv_errno); \ - req->sys_errno_ = (sys_errno); \ - } while (0) - -#define VERIFY_FD(fd, req) \ - if (fd == -1) { \ - req->result = UV_EBADF; \ - req->sys_errno_ = ERROR_INVALID_HANDLE; \ - return; \ - } - -#define FILETIME_TO_UINT(filetime) \ - (*((uint64_t*) &(filetime)) - 116444736000000000ULL) - -#define FILETIME_TO_TIME_T(filetime) \ - (FILETIME_TO_UINT(filetime) / 10000000ULL) - -#define FILETIME_TO_TIME_NS(filetime, secs) \ - ((FILETIME_TO_UINT(filetime) - (secs * 10000000ULL)) * 100) - -#define FILETIME_TO_TIMESPEC(ts, filetime) \ - do { \ - (ts).tv_sec = (long) FILETIME_TO_TIME_T(filetime); \ - (ts).tv_nsec = (long) FILETIME_TO_TIME_NS(filetime, (ts).tv_sec); \ - } while(0) - -#define TIME_T_TO_FILETIME(time, filetime_ptr) \ - do { \ - uint64_t bigtime = ((int64_t) (time) * 10000000LL) + \ - 116444736000000000ULL; \ - (filetime_ptr)->dwLowDateTime = bigtime & 0xFFFFFFFF; \ - (filetime_ptr)->dwHighDateTime = bigtime >> 32; \ - } while(0) - -#define IS_SLASH(c) ((c) == L'\\' || (c) == L'/') -#define IS_LETTER(c) (((c) >= L'a' && (c) <= L'z') || \ - ((c) >= L'A' && (c) <= L'Z')) - -const WCHAR JUNCTION_PREFIX[] = L"\\??\\"; -const WCHAR JUNCTION_PREFIX_LEN = 4; - -const WCHAR LONG_PATH_PREFIX[] = L"\\\\?\\"; -const WCHAR LONG_PATH_PREFIX_LEN = 4; - -const WCHAR UNC_PATH_PREFIX[] = L"\\\\?\\UNC\\"; -const WCHAR UNC_PATH_PREFIX_LEN = 8; - - -void uv_fs_init() { - _fmode = _O_BINARY; -} - - -INLINE static int fs__capture_path(uv_fs_t* req, const char* path, - const char* new_path, const int copy_path) { - char* buf; - char* pos; - ssize_t buf_sz = 0, path_len, pathw_len = 0, new_pathw_len = 0; - - /* new_path can only be set if path is also set. */ - assert(new_path == NULL || path != NULL); - - if (path != NULL) { - pathw_len = MultiByteToWideChar(CP_UTF8, - 0, - path, - -1, - NULL, - 0); - if (pathw_len == 0) { - return GetLastError(); - } - - buf_sz += pathw_len * sizeof(WCHAR); - } - - if (path != NULL && copy_path) { - path_len = 1 + strlen(path); - buf_sz += path_len; - } - - if (new_path != NULL) { - new_pathw_len = MultiByteToWideChar(CP_UTF8, - 0, - new_path, - -1, - NULL, - 0); - if (new_pathw_len == 0) { - return GetLastError(); - } - - buf_sz += new_pathw_len * sizeof(WCHAR); - } - - - if (buf_sz == 0) { - req->file.pathw = NULL; - req->fs.info.new_pathw = NULL; - req->path = NULL; - return 0; - } - - buf = (char*) uv__malloc(buf_sz); - if (buf == NULL) { - return ERROR_OUTOFMEMORY; - } - - pos = buf; - - if (path != NULL) { - DWORD r = MultiByteToWideChar(CP_UTF8, - 0, - path, - -1, - (WCHAR*) pos, - pathw_len); - assert(r == (DWORD) pathw_len); - req->file.pathw = (WCHAR*) pos; - pos += r * sizeof(WCHAR); - } else { - req->file.pathw = NULL; - } - - if (new_path != NULL) { - DWORD r = MultiByteToWideChar(CP_UTF8, - 0, - new_path, - -1, - (WCHAR*) pos, - new_pathw_len); - assert(r == (DWORD) new_pathw_len); - req->fs.info.new_pathw = (WCHAR*) pos; - pos += r * sizeof(WCHAR); - } else { - req->fs.info.new_pathw = NULL; - } - - if (!copy_path) { - req->path = path; - } else if (path) { - memcpy(pos, path, path_len); - assert(path_len == buf_sz - (pos - buf)); - req->path = pos; - } else { - req->path = NULL; - } - - req->flags |= UV_FS_FREE_PATHS; - - return 0; -} - - - -INLINE static void uv_fs_req_init(uv_loop_t* loop, uv_fs_t* req, - uv_fs_type fs_type, const uv_fs_cb cb) { - uv_req_init(loop, (uv_req_t*) req); - - req->type = UV_FS; - req->loop = loop; - req->flags = 0; - req->fs_type = fs_type; - req->result = 0; - req->ptr = NULL; - req->path = NULL; - req->cb = cb; -} - - -static int fs__wide_to_utf8(WCHAR* w_source_ptr, - DWORD w_source_len, - char** target_ptr, - uint64_t* target_len_ptr) { - int r; - int target_len; - char* target; - target_len = WideCharToMultiByte(CP_UTF8, - 0, - w_source_ptr, - w_source_len, - NULL, - 0, - NULL, - NULL); - - if (target_len == 0) { - return -1; - } - - if (target_len_ptr != NULL) { - *target_len_ptr = target_len; - } - - if (target_ptr == NULL) { - return 0; - } - - target = uv__malloc(target_len + 1); - if (target == NULL) { - SetLastError(ERROR_OUTOFMEMORY); - return -1; - } - - r = WideCharToMultiByte(CP_UTF8, - 0, - w_source_ptr, - w_source_len, - target, - target_len, - NULL, - NULL); - assert(r == target_len); - target[target_len] = '\0'; - *target_ptr = target; - return 0; -} - - -INLINE static int fs__readlink_handle(HANDLE handle, char** target_ptr, - uint64_t* target_len_ptr) { - char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; - REPARSE_DATA_BUFFER* reparse_data = (REPARSE_DATA_BUFFER*) buffer; - WCHAR* w_target; - DWORD w_target_len; - DWORD bytes; - - if (!DeviceIoControl(handle, - FSCTL_GET_REPARSE_POINT, - NULL, - 0, - buffer, - sizeof buffer, - &bytes, - NULL)) { - return -1; - } - - if (reparse_data->ReparseTag == IO_REPARSE_TAG_SYMLINK) { - /* Real symlink */ - w_target = reparse_data->SymbolicLinkReparseBuffer.PathBuffer + - (reparse_data->SymbolicLinkReparseBuffer.SubstituteNameOffset / - sizeof(WCHAR)); - w_target_len = - reparse_data->SymbolicLinkReparseBuffer.SubstituteNameLength / - sizeof(WCHAR); - - /* Real symlinks can contain pretty much everything, but the only thing */ - /* we really care about is undoing the implicit conversion to an NT */ - /* namespaced path that CreateSymbolicLink will perform on absolute */ - /* paths. If the path is win32-namespaced then the user must have */ - /* explicitly made it so, and we better just return the unmodified */ - /* reparse data. */ - if (w_target_len >= 4 && - w_target[0] == L'\\' && - w_target[1] == L'?' && - w_target[2] == L'?' && - w_target[3] == L'\\') { - /* Starts with \??\ */ - if (w_target_len >= 6 && - ((w_target[4] >= L'A' && w_target[4] <= L'Z') || - (w_target[4] >= L'a' && w_target[4] <= L'z')) && - w_target[5] == L':' && - (w_target_len == 6 || w_target[6] == L'\\')) { - /* \??\<drive>:\ */ - w_target += 4; - w_target_len -= 4; - - } else if (w_target_len >= 8 && - (w_target[4] == L'U' || w_target[4] == L'u') && - (w_target[5] == L'N' || w_target[5] == L'n') && - (w_target[6] == L'C' || w_target[6] == L'c') && - w_target[7] == L'\\') { - /* \??\UNC\<server>\<share>\ - make sure the final path looks like */ - /* \\<server>\<share>\ */ - w_target += 6; - w_target[0] = L'\\'; - w_target_len -= 6; - } - } - - } else if (reparse_data->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT) { - /* Junction. */ - w_target = reparse_data->MountPointReparseBuffer.PathBuffer + - (reparse_data->MountPointReparseBuffer.SubstituteNameOffset / - sizeof(WCHAR)); - w_target_len = reparse_data->MountPointReparseBuffer.SubstituteNameLength / - sizeof(WCHAR); - - /* Only treat junctions that look like \??\<drive>:\ as symlink. */ - /* Junctions can also be used as mount points, like \??\Volume{<guid>}, */ - /* but that's confusing for programs since they wouldn't be able to */ - /* actually understand such a path when returned by uv_readlink(). */ - /* UNC paths are never valid for junctions so we don't care about them. */ - if (!(w_target_len >= 6 && - w_target[0] == L'\\' && - w_target[1] == L'?' && - w_target[2] == L'?' && - w_target[3] == L'\\' && - ((w_target[4] >= L'A' && w_target[4] <= L'Z') || - (w_target[4] >= L'a' && w_target[4] <= L'z')) && - w_target[5] == L':' && - (w_target_len == 6 || w_target[6] == L'\\'))) { - SetLastError(ERROR_SYMLINK_NOT_SUPPORTED); - return -1; - } - - /* Remove leading \??\ */ - w_target += 4; - w_target_len -= 4; - - } else { - /* Reparse tag does not indicate a symlink. */ - SetLastError(ERROR_SYMLINK_NOT_SUPPORTED); - return -1; - } - - return fs__wide_to_utf8(w_target, w_target_len, target_ptr, target_len_ptr); -} - - -void fs__open(uv_fs_t* req) { - DWORD access; - DWORD share; - DWORD disposition; - DWORD attributes = 0; - HANDLE file; - int fd, current_umask; - int flags = req->fs.info.file_flags; - - /* Obtain the active umask. umask() never fails and returns the previous */ - /* umask. */ - current_umask = umask(0); - umask(current_umask); - - /* convert flags and mode to CreateFile parameters */ - switch (flags & (_O_RDONLY | _O_WRONLY | _O_RDWR)) { - case _O_RDONLY: - access = FILE_GENERIC_READ; - attributes |= FILE_FLAG_BACKUP_SEMANTICS; - break; - case _O_WRONLY: - access = FILE_GENERIC_WRITE; - break; - case _O_RDWR: - access = FILE_GENERIC_READ | FILE_GENERIC_WRITE; - break; - default: - goto einval; - } - - if (flags & _O_APPEND) { - access &= ~FILE_WRITE_DATA; - access |= FILE_APPEND_DATA; - attributes &= ~FILE_FLAG_BACKUP_SEMANTICS; - } - - /* - * Here is where we deviate significantly from what CRT's _open() - * does. We indiscriminately use all the sharing modes, to match - * UNIX semantics. In particular, this ensures that the file can - * be deleted even whilst it's open, fixing issue #1449. - */ - share = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE; - - switch (flags & (_O_CREAT | _O_EXCL | _O_TRUNC)) { - case 0: - case _O_EXCL: - disposition = OPEN_EXISTING; - break; - case _O_CREAT: - disposition = OPEN_ALWAYS; - break; - case _O_CREAT | _O_EXCL: - case _O_CREAT | _O_TRUNC | _O_EXCL: - disposition = CREATE_NEW; - break; - case _O_TRUNC: - case _O_TRUNC | _O_EXCL: - disposition = TRUNCATE_EXISTING; - break; - case _O_CREAT | _O_TRUNC: - disposition = CREATE_ALWAYS; - break; - default: - goto einval; - } - - attributes |= FILE_ATTRIBUTE_NORMAL; - if (flags & _O_CREAT) { - if (!((req->fs.info.mode & ~current_umask) & _S_IWRITE)) { - attributes |= FILE_ATTRIBUTE_READONLY; - } - } - - if (flags & _O_TEMPORARY ) { - attributes |= FILE_FLAG_DELETE_ON_CLOSE | FILE_ATTRIBUTE_TEMPORARY; - access |= DELETE; - } - - if (flags & _O_SHORT_LIVED) { - attributes |= FILE_ATTRIBUTE_TEMPORARY; - } - - switch (flags & (_O_SEQUENTIAL | _O_RANDOM)) { - case 0: - break; - case _O_SEQUENTIAL: - attributes |= FILE_FLAG_SEQUENTIAL_SCAN; - break; - case _O_RANDOM: - attributes |= FILE_FLAG_RANDOM_ACCESS; - break; - default: - goto einval; - } - - /* Setting this flag makes it possible to open a directory. */ - attributes |= FILE_FLAG_BACKUP_SEMANTICS; - - file = CreateFileW(req->file.pathw, - access, - share, - NULL, - disposition, - attributes, - NULL); - if (file == INVALID_HANDLE_VALUE) { - DWORD error = GetLastError(); - if (error == ERROR_FILE_EXISTS && (flags & _O_CREAT) && - !(flags & _O_EXCL)) { - /* Special case: when ERROR_FILE_EXISTS happens and O_CREAT was */ - /* specified, it means the path referred to a directory. */ - SET_REQ_UV_ERROR(req, UV_EISDIR, error); - } else { - SET_REQ_WIN32_ERROR(req, GetLastError()); - } - return; - } - - fd = _open_osfhandle((intptr_t) file, flags); - if (fd < 0) { - /* The only known failure mode for _open_osfhandle() is EMFILE, in which - * case GetLastError() will return zero. However we'll try to handle other - * errors as well, should they ever occur. - */ - if (errno == EMFILE) - SET_REQ_UV_ERROR(req, UV_EMFILE, ERROR_TOO_MANY_OPEN_FILES); - else if (GetLastError() != ERROR_SUCCESS) - SET_REQ_WIN32_ERROR(req, GetLastError()); - else - SET_REQ_WIN32_ERROR(req, UV_UNKNOWN); - CloseHandle(file); - return; - } - - SET_REQ_RESULT(req, fd); - return; - - einval: - SET_REQ_UV_ERROR(req, UV_EINVAL, ERROR_INVALID_PARAMETER); -} - -void fs__close(uv_fs_t* req) { - int fd = req->file.fd; - int result; - - VERIFY_FD(fd, req); - - if (fd > 2) - result = _close(fd); - else - result = 0; - - /* _close doesn't set _doserrno on failure, but it does always set errno - * to EBADF on failure. - */ - if (result == -1) { - assert(errno == EBADF); - SET_REQ_UV_ERROR(req, UV_EBADF, ERROR_INVALID_HANDLE); - } else { - req->result = 0; - } -} - - -void fs__read(uv_fs_t* req) { - int fd = req->file.fd; - int64_t offset = req->fs.info.offset; - HANDLE handle; - OVERLAPPED overlapped, *overlapped_ptr; - LARGE_INTEGER offset_; - DWORD bytes; - DWORD error; - int result; - unsigned int index; - - VERIFY_FD(fd, req); - - handle = uv__get_osfhandle(fd); - - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, ERROR_INVALID_HANDLE); - return; - } - - if (offset != -1) { - memset(&overlapped, 0, sizeof overlapped); - overlapped_ptr = &overlapped; - } else { - overlapped_ptr = NULL; - } - - index = 0; - bytes = 0; - do { - DWORD incremental_bytes; - - if (offset != -1) { - offset_.QuadPart = offset + bytes; - overlapped.Offset = offset_.LowPart; - overlapped.OffsetHigh = offset_.HighPart; - } - - result = ReadFile(handle, - req->fs.info.bufs[index].base, - req->fs.info.bufs[index].len, - &incremental_bytes, - overlapped_ptr); - bytes += incremental_bytes; - ++index; - } while (result && index < req->fs.info.nbufs); - - if (result || bytes > 0) { - SET_REQ_RESULT(req, bytes); - } else { - error = GetLastError(); - if (error == ERROR_HANDLE_EOF) { - SET_REQ_RESULT(req, bytes); - } else { - SET_REQ_WIN32_ERROR(req, error); - } - } -} - - -void fs__write(uv_fs_t* req) { - int fd = req->file.fd; - int64_t offset = req->fs.info.offset; - HANDLE handle; - OVERLAPPED overlapped, *overlapped_ptr; - LARGE_INTEGER offset_; - DWORD bytes; - int result; - unsigned int index; - - VERIFY_FD(fd, req); - - handle = uv__get_osfhandle(fd); - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, ERROR_INVALID_HANDLE); - return; - } - - if (offset != -1) { - memset(&overlapped, 0, sizeof overlapped); - overlapped_ptr = &overlapped; - } else { - overlapped_ptr = NULL; - } - - index = 0; - bytes = 0; - do { - DWORD incremental_bytes; - - if (offset != -1) { - offset_.QuadPart = offset + bytes; - overlapped.Offset = offset_.LowPart; - overlapped.OffsetHigh = offset_.HighPart; - } - - result = WriteFile(handle, - req->fs.info.bufs[index].base, - req->fs.info.bufs[index].len, - &incremental_bytes, - overlapped_ptr); - bytes += incremental_bytes; - ++index; - } while (result && index < req->fs.info.nbufs); - - if (result || bytes > 0) { - SET_REQ_RESULT(req, bytes); - } else { - SET_REQ_WIN32_ERROR(req, GetLastError()); - } -} - - -void fs__rmdir(uv_fs_t* req) { - int result = _wrmdir(req->file.pathw); - SET_REQ_RESULT(req, result); -} - - -void fs__unlink(uv_fs_t* req) { - const WCHAR* pathw = req->file.pathw; - HANDLE handle; - BY_HANDLE_FILE_INFORMATION info; - FILE_DISPOSITION_INFORMATION disposition; - IO_STATUS_BLOCK iosb; - NTSTATUS status; - - handle = CreateFileW(pathw, - FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES | DELETE, - FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, - NULL, - OPEN_EXISTING, - FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, - NULL); - - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - if (!GetFileInformationByHandle(handle, &info)) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - CloseHandle(handle); - return; - } - - if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { - /* Do not allow deletion of directories, unless it is a symlink. When */ - /* the path refers to a non-symlink directory, report EPERM as mandated */ - /* by POSIX.1. */ - - /* Check if it is a reparse point. If it's not, it's a normal directory. */ - if (!(info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) { - SET_REQ_WIN32_ERROR(req, ERROR_ACCESS_DENIED); - CloseHandle(handle); - return; - } - - /* Read the reparse point and check if it is a valid symlink. */ - /* If not, don't unlink. */ - if (fs__readlink_handle(handle, NULL, NULL) < 0) { - DWORD error = GetLastError(); - if (error == ERROR_SYMLINK_NOT_SUPPORTED) - error = ERROR_ACCESS_DENIED; - SET_REQ_WIN32_ERROR(req, error); - CloseHandle(handle); - return; - } - } - - if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) { - /* Remove read-only attribute */ - FILE_BASIC_INFORMATION basic = { 0 }; - - basic.FileAttributes = info.dwFileAttributes & ~(FILE_ATTRIBUTE_READONLY); - - status = pNtSetInformationFile(handle, - &iosb, - &basic, - sizeof basic, - FileBasicInformation); - if (!NT_SUCCESS(status)) { - SET_REQ_WIN32_ERROR(req, pRtlNtStatusToDosError(status)); - CloseHandle(handle); - return; - } - } - - /* Try to set the delete flag. */ - disposition.DeleteFile = TRUE; - status = pNtSetInformationFile(handle, - &iosb, - &disposition, - sizeof disposition, - FileDispositionInformation); - if (NT_SUCCESS(status)) { - SET_REQ_SUCCESS(req); - } else { - SET_REQ_WIN32_ERROR(req, pRtlNtStatusToDosError(status)); - } - - CloseHandle(handle); -} - - -void fs__mkdir(uv_fs_t* req) { - /* TODO: use req->mode. */ - int result = _wmkdir(req->file.pathw); - SET_REQ_RESULT(req, result); -} - - -/* OpenBSD original: lib/libc/stdio/mktemp.c */ -void fs__mkdtemp(uv_fs_t* req) { - static const WCHAR *tempchars = - L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; - static const size_t num_chars = 62; - static const size_t num_x = 6; - WCHAR *cp, *ep; - unsigned int tries, i; - size_t len; - HCRYPTPROV h_crypt_prov; - uint64_t v; - BOOL released; - - len = wcslen(req->file.pathw); - ep = req->file.pathw + len; - if (len < num_x || wcsncmp(ep - num_x, L"XXXXXX", num_x)) { - SET_REQ_UV_ERROR(req, UV_EINVAL, ERROR_INVALID_PARAMETER); - return; - } - - if (!CryptAcquireContext(&h_crypt_prov, NULL, NULL, PROV_RSA_FULL, - CRYPT_VERIFYCONTEXT)) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - tries = TMP_MAX; - do { - if (!CryptGenRandom(h_crypt_prov, sizeof(v), (BYTE*) &v)) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - break; - } - - cp = ep - num_x; - for (i = 0; i < num_x; i++) { - *cp++ = tempchars[v % num_chars]; - v /= num_chars; - } - - if (_wmkdir(req->file.pathw) == 0) { - len = strlen(req->path); - wcstombs((char*) req->path + len - num_x, ep - num_x, num_x); - SET_REQ_RESULT(req, 0); - break; - } else if (errno != EEXIST) { - SET_REQ_RESULT(req, -1); - break; - } - } while (--tries); - - released = CryptReleaseContext(h_crypt_prov, 0); - assert(released); - if (tries == 0) { - SET_REQ_RESULT(req, -1); - } -} - - -void fs__scandir(uv_fs_t* req) { - static const size_t dirents_initial_size = 32; - - HANDLE dir_handle = INVALID_HANDLE_VALUE; - - uv__dirent_t** dirents = NULL; - size_t dirents_size = 0; - size_t dirents_used = 0; - - IO_STATUS_BLOCK iosb; - NTSTATUS status; - - /* Buffer to hold directory entries returned by NtQueryDirectoryFile. - * It's important that this buffer can hold at least one entry, regardless - * of the length of the file names present in the enumerated directory. - * A file name is at most 256 WCHARs long. - * According to MSDN, the buffer must be aligned at an 8-byte boundary. - */ -#if _MSC_VER - __declspec(align(8)) char buffer[8192]; -#else - __attribute__ ((aligned (8))) char buffer[8192]; -#endif - - STATIC_ASSERT(sizeof buffer >= - sizeof(FILE_DIRECTORY_INFORMATION) + 256 * sizeof(WCHAR)); - - /* Open the directory. */ - dir_handle = - CreateFileW(req->file.pathw, - FILE_LIST_DIRECTORY | SYNCHRONIZE, - FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, - NULL, - OPEN_EXISTING, - FILE_FLAG_BACKUP_SEMANTICS, - NULL); - if (dir_handle == INVALID_HANDLE_VALUE) - goto win32_error; - - /* Read the first chunk. */ - status = pNtQueryDirectoryFile(dir_handle, - NULL, - NULL, - NULL, - &iosb, - &buffer, - sizeof buffer, - FileDirectoryInformation, - FALSE, - NULL, - TRUE); - - /* If the handle is not a directory, we'll get STATUS_INVALID_PARAMETER. - * This should be reported back as UV_ENOTDIR. - */ - if (status == STATUS_INVALID_PARAMETER) - goto not_a_directory_error; - - while (NT_SUCCESS(status)) { - char* position = buffer; - size_t next_entry_offset = 0; - - do { - FILE_DIRECTORY_INFORMATION* info; - uv__dirent_t* dirent; - - size_t wchar_len; - size_t utf8_len; - - /* Obtain a pointer to the current directory entry. */ - position += next_entry_offset; - info = (FILE_DIRECTORY_INFORMATION*) position; - - /* Fetch the offset to the next directory entry. */ - next_entry_offset = info->NextEntryOffset; - - /* Compute the length of the filename in WCHARs. */ - wchar_len = info->FileNameLength / sizeof info->FileName[0]; - - /* Skip over '.' and '..' entries. */ - if (wchar_len == 1 && info->FileName[0] == L'.') - continue; - if (wchar_len == 2 && info->FileName[0] == L'.' && - info->FileName[1] == L'.') - continue; - - /* Compute the space required to store the filename as UTF-8. */ - utf8_len = WideCharToMultiByte( - CP_UTF8, 0, &info->FileName[0], wchar_len, NULL, 0, NULL, NULL); - if (utf8_len == 0) - goto win32_error; - - /* Resize the dirent array if needed. */ - if (dirents_used >= dirents_size) { - size_t new_dirents_size = - dirents_size == 0 ? dirents_initial_size : dirents_size << 1; - uv__dirent_t** new_dirents = - uv__realloc(dirents, new_dirents_size * sizeof *dirents); - - if (new_dirents == NULL) - goto out_of_memory_error; - - dirents_size = new_dirents_size; - dirents = new_dirents; - } - - /* Allocate space for the uv dirent structure. The dirent structure - * includes room for the first character of the filename, but `utf8_len` - * doesn't count the NULL terminator at this point. - */ - dirent = uv__malloc(sizeof *dirent + utf8_len); - if (dirent == NULL) - goto out_of_memory_error; - - dirents[dirents_used++] = dirent; - - /* Convert file name to UTF-8. */ - if (WideCharToMultiByte(CP_UTF8, - 0, - &info->FileName[0], - wchar_len, - &dirent->d_name[0], - utf8_len, - NULL, - NULL) == 0) - goto win32_error; - - /* Add a null terminator to the filename. */ - dirent->d_name[utf8_len] = '\0'; - - /* Fill out the type field. */ - if (info->FileAttributes & FILE_ATTRIBUTE_DEVICE) - dirent->d_type = UV__DT_CHAR; - else if (info->FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) - dirent->d_type = UV__DT_LINK; - else if (info->FileAttributes & FILE_ATTRIBUTE_DIRECTORY) - dirent->d_type = UV__DT_DIR; - else - dirent->d_type = UV__DT_FILE; - } while (next_entry_offset != 0); - - /* Read the next chunk. */ - status = pNtQueryDirectoryFile(dir_handle, - NULL, - NULL, - NULL, - &iosb, - &buffer, - sizeof buffer, - FileDirectoryInformation, - FALSE, - NULL, - FALSE); - - /* After the first pNtQueryDirectoryFile call, the function may return - * STATUS_SUCCESS even if the buffer was too small to hold at least one - * directory entry. - */ - if (status == STATUS_SUCCESS && iosb.Information == 0) - status = STATUS_BUFFER_OVERFLOW; - } - - if (status != STATUS_NO_MORE_FILES) - goto nt_error; - - CloseHandle(dir_handle); - - /* Store the result in the request object. */ - req->ptr = dirents; - if (dirents != NULL) - req->flags |= UV_FS_FREE_PTR; - - SET_REQ_RESULT(req, dirents_used); - - /* `nbufs` will be used as index by uv_fs_scandir_next. */ - req->fs.info.nbufs = 0; - - return; - -nt_error: - SET_REQ_WIN32_ERROR(req, pRtlNtStatusToDosError(status)); - goto cleanup; - -win32_error: - SET_REQ_WIN32_ERROR(req, GetLastError()); - goto cleanup; - -not_a_directory_error: - SET_REQ_UV_ERROR(req, UV_ENOTDIR, ERROR_DIRECTORY); - goto cleanup; - -out_of_memory_error: - SET_REQ_UV_ERROR(req, UV_ENOMEM, ERROR_OUTOFMEMORY); - goto cleanup; - -cleanup: - if (dir_handle != INVALID_HANDLE_VALUE) - CloseHandle(dir_handle); - while (dirents_used > 0) - uv__free(dirents[--dirents_used]); - if (dirents != NULL) - uv__free(dirents); -} - - -INLINE static int fs__stat_handle(HANDLE handle, uv_stat_t* statbuf) { - FILE_ALL_INFORMATION file_info; - FILE_FS_VOLUME_INFORMATION volume_info; - NTSTATUS nt_status; - IO_STATUS_BLOCK io_status; - - nt_status = pNtQueryInformationFile(handle, - &io_status, - &file_info, - sizeof file_info, - FileAllInformation); - - /* Buffer overflow (a warning status code) is expected here. */ - if (NT_ERROR(nt_status)) { - SetLastError(pRtlNtStatusToDosError(nt_status)); - return -1; - } - - nt_status = pNtQueryVolumeInformationFile(handle, - &io_status, - &volume_info, - sizeof volume_info, - FileFsVolumeInformation); - - /* Buffer overflow (a warning status code) is expected here. */ - if (io_status.Status == STATUS_NOT_IMPLEMENTED) { - statbuf->st_dev = 0; - } else if (NT_ERROR(nt_status)) { - SetLastError(pRtlNtStatusToDosError(nt_status)); - return -1; - } else { - statbuf->st_dev = volume_info.VolumeSerialNumber; - } - - /* Todo: st_mode should probably always be 0666 for everyone. We might also - * want to report 0777 if the file is a .exe or a directory. - * - * Currently it's based on whether the 'readonly' attribute is set, which - * makes little sense because the semantics are so different: the 'read-only' - * flag is just a way for a user to protect against accidental deletion, and - * serves no security purpose. Windows uses ACLs for that. - * - * Also people now use uv_fs_chmod() to take away the writable bit for good - * reasons. Windows however just makes the file read-only, which makes it - * impossible to delete the file afterwards, since read-only files can't be - * deleted. - * - * IOW it's all just a clusterfuck and we should think of something that - * makes slightly more sense. - * - * And uv_fs_chmod should probably just fail on windows or be a total no-op. - * There's nothing sensible it can do anyway. - */ - statbuf->st_mode = 0; - - if (file_info.BasicInformation.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { - statbuf->st_mode |= S_IFLNK; - if (fs__readlink_handle(handle, NULL, &statbuf->st_size) != 0) - return -1; - - } else if (file_info.BasicInformation.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) { - statbuf->st_mode |= _S_IFDIR; - statbuf->st_size = 0; - - } else { - statbuf->st_mode |= _S_IFREG; - statbuf->st_size = file_info.StandardInformation.EndOfFile.QuadPart; - } - - if (file_info.BasicInformation.FileAttributes & FILE_ATTRIBUTE_READONLY) - statbuf->st_mode |= _S_IREAD | (_S_IREAD >> 3) | (_S_IREAD >> 6); - else - statbuf->st_mode |= (_S_IREAD | _S_IWRITE) | ((_S_IREAD | _S_IWRITE) >> 3) | - ((_S_IREAD | _S_IWRITE) >> 6); - - FILETIME_TO_TIMESPEC(statbuf->st_atim, file_info.BasicInformation.LastAccessTime); - FILETIME_TO_TIMESPEC(statbuf->st_ctim, file_info.BasicInformation.ChangeTime); - FILETIME_TO_TIMESPEC(statbuf->st_mtim, file_info.BasicInformation.LastWriteTime); - FILETIME_TO_TIMESPEC(statbuf->st_birthtim, file_info.BasicInformation.CreationTime); - - statbuf->st_ino = file_info.InternalInformation.IndexNumber.QuadPart; - - /* st_blocks contains the on-disk allocation size in 512-byte units. */ - statbuf->st_blocks = - file_info.StandardInformation.AllocationSize.QuadPart >> 9ULL; - - statbuf->st_nlink = file_info.StandardInformation.NumberOfLinks; - - /* The st_blksize is supposed to be the 'optimal' number of bytes for reading - * and writing to the disk. That is, for any definition of 'optimal' - it's - * supposed to at least avoid read-update-write behavior when writing to the - * disk. - * - * However nobody knows this and even fewer people actually use this value, - * and in order to fill it out we'd have to make another syscall to query the - * volume for FILE_FS_SECTOR_SIZE_INFORMATION. - * - * Therefore we'll just report a sensible value that's quite commonly okay - * on modern hardware. - */ - statbuf->st_blksize = 2048; - - /* Todo: set st_flags to something meaningful. Also provide a wrapper for - * chattr(2). - */ - statbuf->st_flags = 0; - - /* Windows has nothing sensible to say about these values, so they'll just - * remain empty. - */ - statbuf->st_gid = 0; - statbuf->st_uid = 0; - statbuf->st_rdev = 0; - statbuf->st_gen = 0; - - return 0; -} - - -INLINE static void fs__stat_prepare_path(WCHAR* pathw) { - size_t len = wcslen(pathw); - - /* TODO: ignore namespaced paths. */ - if (len > 1 && pathw[len - 2] != L':' && - (pathw[len - 1] == L'\\' || pathw[len - 1] == L'/')) { - pathw[len - 1] = '\0'; - } -} - - -INLINE static void fs__stat_impl(uv_fs_t* req, int do_lstat) { - HANDLE handle; - DWORD flags; - - flags = FILE_FLAG_BACKUP_SEMANTICS; - if (do_lstat) { - flags |= FILE_FLAG_OPEN_REPARSE_POINT; - } - - handle = CreateFileW(req->file.pathw, - FILE_READ_ATTRIBUTES, - FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, - NULL, - OPEN_EXISTING, - flags, - NULL); - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - if (fs__stat_handle(handle, &req->statbuf) != 0) { - DWORD error = GetLastError(); - if (do_lstat && error == ERROR_SYMLINK_NOT_SUPPORTED) { - /* We opened a reparse point but it was not a symlink. Try again. */ - fs__stat_impl(req, 0); - - } else { - /* Stat failed. */ - SET_REQ_WIN32_ERROR(req, GetLastError()); - } - - CloseHandle(handle); - return; - } - - req->ptr = &req->statbuf; - req->result = 0; - CloseHandle(handle); -} - - -static void fs__stat(uv_fs_t* req) { - fs__stat_prepare_path(req->file.pathw); - fs__stat_impl(req, 0); -} - - -static void fs__lstat(uv_fs_t* req) { - fs__stat_prepare_path(req->file.pathw); - fs__stat_impl(req, 1); -} - - -static void fs__fstat(uv_fs_t* req) { - int fd = req->file.fd; - HANDLE handle; - - VERIFY_FD(fd, req); - - handle = uv__get_osfhandle(fd); - - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, ERROR_INVALID_HANDLE); - return; - } - - if (fs__stat_handle(handle, &req->statbuf) != 0) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - req->ptr = &req->statbuf; - req->result = 0; -} - - -static void fs__rename(uv_fs_t* req) { - if (!MoveFileExW(req->file.pathw, req->fs.info.new_pathw, MOVEFILE_REPLACE_EXISTING)) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - SET_REQ_RESULT(req, 0); -} - - -INLINE static void fs__sync_impl(uv_fs_t* req) { - int fd = req->file.fd; - int result; - - VERIFY_FD(fd, req); - - result = FlushFileBuffers(uv__get_osfhandle(fd)) ? 0 : -1; - if (result == -1) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - } else { - SET_REQ_RESULT(req, result); - } -} - - -static void fs__fsync(uv_fs_t* req) { - fs__sync_impl(req); -} - - -static void fs__fdatasync(uv_fs_t* req) { - fs__sync_impl(req); -} - - -static void fs__ftruncate(uv_fs_t* req) { - int fd = req->file.fd; - HANDLE handle; - NTSTATUS status; - IO_STATUS_BLOCK io_status; - FILE_END_OF_FILE_INFORMATION eof_info; - - VERIFY_FD(fd, req); - - handle = uv__get_osfhandle(fd); - - eof_info.EndOfFile.QuadPart = req->fs.info.offset; - - status = pNtSetInformationFile(handle, - &io_status, - &eof_info, - sizeof eof_info, - FileEndOfFileInformation); - - if (NT_SUCCESS(status)) { - SET_REQ_RESULT(req, 0); - } else { - SET_REQ_WIN32_ERROR(req, pRtlNtStatusToDosError(status)); - } -} - - -static void fs__sendfile(uv_fs_t* req) { - int fd_in = req->file.fd, fd_out = req->fs.info.fd_out; - size_t length = req->fs.info.bufsml[0].len; - int64_t offset = req->fs.info.offset; - const size_t max_buf_size = 65536; - size_t buf_size = length < max_buf_size ? length : max_buf_size; - int n, result = 0; - int64_t result_offset = 0; - char* buf = (char*) uv__malloc(buf_size); - if (!buf) { - uv_fatal_error(ERROR_OUTOFMEMORY, "uv__malloc"); - } - - if (offset != -1) { - result_offset = _lseeki64(fd_in, offset, SEEK_SET); - } - - if (result_offset == -1) { - result = -1; - } else { - while (length > 0) { - n = _read(fd_in, buf, length < buf_size ? length : buf_size); - if (n == 0) { - break; - } else if (n == -1) { - result = -1; - break; - } - - length -= n; - - n = _write(fd_out, buf, n); - if (n == -1) { - result = -1; - break; - } - - result += n; - } - } - - uv__free(buf); - - SET_REQ_RESULT(req, result); -} - - -static void fs__access(uv_fs_t* req) { - DWORD attr = GetFileAttributesW(req->file.pathw); - - if (attr == INVALID_FILE_ATTRIBUTES) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - /* - * Access is possible if - * - write access wasn't requested, - * - or the file isn't read-only, - * - or it's a directory. - * (Directories cannot be read-only on Windows.) - */ - if (!(req->flags & W_OK) || - !(attr & FILE_ATTRIBUTE_READONLY) || - (attr & FILE_ATTRIBUTE_DIRECTORY)) { - SET_REQ_RESULT(req, 0); - } else { - SET_REQ_WIN32_ERROR(req, UV_EPERM); - } - -} - - -static void fs__chmod(uv_fs_t* req) { - int result = _wchmod(req->file.pathw, req->fs.info.mode); - SET_REQ_RESULT(req, result); -} - - -static void fs__fchmod(uv_fs_t* req) { - int fd = req->file.fd; - HANDLE handle; - NTSTATUS nt_status; - IO_STATUS_BLOCK io_status; - FILE_BASIC_INFORMATION file_info; - - VERIFY_FD(fd, req); - - handle = uv__get_osfhandle(fd); - - nt_status = pNtQueryInformationFile(handle, - &io_status, - &file_info, - sizeof file_info, - FileBasicInformation); - - if (!NT_SUCCESS(nt_status)) { - SET_REQ_WIN32_ERROR(req, pRtlNtStatusToDosError(nt_status)); - return; - } - - if (req->fs.info.mode & _S_IWRITE) { - file_info.FileAttributes &= ~FILE_ATTRIBUTE_READONLY; - } else { - file_info.FileAttributes |= FILE_ATTRIBUTE_READONLY; - } - - nt_status = pNtSetInformationFile(handle, - &io_status, - &file_info, - sizeof file_info, - FileBasicInformation); - - if (!NT_SUCCESS(nt_status)) { - SET_REQ_WIN32_ERROR(req, pRtlNtStatusToDosError(nt_status)); - return; - } - - SET_REQ_SUCCESS(req); -} - - -INLINE static int fs__utime_handle(HANDLE handle, double atime, double mtime) { - FILETIME filetime_a, filetime_m; - - TIME_T_TO_FILETIME((time_t) atime, &filetime_a); - TIME_T_TO_FILETIME((time_t) mtime, &filetime_m); - - if (!SetFileTime(handle, NULL, &filetime_a, &filetime_m)) { - return -1; - } - - return 0; -} - - -static void fs__utime(uv_fs_t* req) { - HANDLE handle; - - handle = CreateFileW(req->file.pathw, - FILE_WRITE_ATTRIBUTES, - FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, - NULL, - OPEN_EXISTING, - FILE_FLAG_BACKUP_SEMANTICS, - NULL); - - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - if (fs__utime_handle(handle, req->fs.time.atime, req->fs.time.mtime) != 0) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - CloseHandle(handle); - return; - } - - CloseHandle(handle); - - req->result = 0; -} - - -static void fs__futime(uv_fs_t* req) { - int fd = req->file.fd; - HANDLE handle; - VERIFY_FD(fd, req); - - handle = uv__get_osfhandle(fd); - - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, ERROR_INVALID_HANDLE); - return; - } - - if (fs__utime_handle(handle, req->fs.time.atime, req->fs.time.mtime) != 0) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - req->result = 0; -} - - -static void fs__link(uv_fs_t* req) { - DWORD r = CreateHardLinkW(req->fs.info.new_pathw, req->file.pathw, NULL); - if (r == 0) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - } else { - req->result = 0; - } -} - - -static void fs__create_junction(uv_fs_t* req, const WCHAR* path, - const WCHAR* new_path) { - HANDLE handle = INVALID_HANDLE_VALUE; - REPARSE_DATA_BUFFER *buffer = NULL; - int created = 0; - int target_len; - int is_absolute, is_long_path; - int needed_buf_size, used_buf_size, used_data_size, path_buf_len; - int start, len, i; - int add_slash; - DWORD bytes; - WCHAR* path_buf; - - target_len = wcslen(path); - is_long_path = wcsncmp(path, LONG_PATH_PREFIX, LONG_PATH_PREFIX_LEN) == 0; - - if (is_long_path) { - is_absolute = 1; - } else { - is_absolute = target_len >= 3 && IS_LETTER(path[0]) && - path[1] == L':' && IS_SLASH(path[2]); - } - - if (!is_absolute) { - /* Not supporting relative paths */ - SET_REQ_UV_ERROR(req, UV_EINVAL, ERROR_NOT_SUPPORTED); - return; - } - - /* Do a pessimistic calculation of the required buffer size */ - needed_buf_size = - FIELD_OFFSET(REPARSE_DATA_BUFFER, MountPointReparseBuffer.PathBuffer) + - JUNCTION_PREFIX_LEN * sizeof(WCHAR) + - 2 * (target_len + 2) * sizeof(WCHAR); - - /* Allocate the buffer */ - buffer = (REPARSE_DATA_BUFFER*)uv__malloc(needed_buf_size); - if (!buffer) { - uv_fatal_error(ERROR_OUTOFMEMORY, "uv__malloc"); - } - - /* Grab a pointer to the part of the buffer where filenames go */ - path_buf = (WCHAR*)&(buffer->MountPointReparseBuffer.PathBuffer); - path_buf_len = 0; - - /* Copy the substitute (internal) target path */ - start = path_buf_len; - - wcsncpy((WCHAR*)&path_buf[path_buf_len], JUNCTION_PREFIX, - JUNCTION_PREFIX_LEN); - path_buf_len += JUNCTION_PREFIX_LEN; - - add_slash = 0; - for (i = is_long_path ? LONG_PATH_PREFIX_LEN : 0; path[i] != L'\0'; i++) { - if (IS_SLASH(path[i])) { - add_slash = 1; - continue; - } - - if (add_slash) { - path_buf[path_buf_len++] = L'\\'; - add_slash = 0; - } - - path_buf[path_buf_len++] = path[i]; - } - path_buf[path_buf_len++] = L'\\'; - len = path_buf_len - start; - - /* Set the info about the substitute name */ - buffer->MountPointReparseBuffer.SubstituteNameOffset = start * sizeof(WCHAR); - buffer->MountPointReparseBuffer.SubstituteNameLength = len * sizeof(WCHAR); - - /* Insert null terminator */ - path_buf[path_buf_len++] = L'\0'; - - /* Copy the print name of the target path */ - start = path_buf_len; - add_slash = 0; - for (i = is_long_path ? LONG_PATH_PREFIX_LEN : 0; path[i] != L'\0'; i++) { - if (IS_SLASH(path[i])) { - add_slash = 1; - continue; - } - - if (add_slash) { - path_buf[path_buf_len++] = L'\\'; - add_slash = 0; - } - - path_buf[path_buf_len++] = path[i]; - } - len = path_buf_len - start; - if (len == 2) { - path_buf[path_buf_len++] = L'\\'; - len++; - } - - /* Set the info about the print name */ - buffer->MountPointReparseBuffer.PrintNameOffset = start * sizeof(WCHAR); - buffer->MountPointReparseBuffer.PrintNameLength = len * sizeof(WCHAR); - - /* Insert another null terminator */ - path_buf[path_buf_len++] = L'\0'; - - /* Calculate how much buffer space was actually used */ - used_buf_size = FIELD_OFFSET(REPARSE_DATA_BUFFER, MountPointReparseBuffer.PathBuffer) + - path_buf_len * sizeof(WCHAR); - used_data_size = used_buf_size - - FIELD_OFFSET(REPARSE_DATA_BUFFER, MountPointReparseBuffer); - - /* Put general info in the data buffer */ - buffer->ReparseTag = IO_REPARSE_TAG_MOUNT_POINT; - buffer->ReparseDataLength = used_data_size; - buffer->Reserved = 0; - - /* Create a new directory */ - if (!CreateDirectoryW(new_path, NULL)) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - goto error; - } - created = 1; - - /* Open the directory */ - handle = CreateFileW(new_path, - GENERIC_WRITE, - 0, - NULL, - OPEN_EXISTING, - FILE_FLAG_BACKUP_SEMANTICS | - FILE_FLAG_OPEN_REPARSE_POINT, - NULL); - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - goto error; - } - - /* Create the actual reparse point */ - if (!DeviceIoControl(handle, - FSCTL_SET_REPARSE_POINT, - buffer, - used_buf_size, - NULL, - 0, - &bytes, - NULL)) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - goto error; - } - - /* Clean up */ - CloseHandle(handle); - uv__free(buffer); - - SET_REQ_RESULT(req, 0); - return; - -error: - uv__free(buffer); - - if (handle != INVALID_HANDLE_VALUE) { - CloseHandle(handle); - } - - if (created) { - RemoveDirectoryW(new_path); - } -} - - -static void fs__symlink(uv_fs_t* req) { - WCHAR* pathw = req->file.pathw; - WCHAR* new_pathw = req->fs.info.new_pathw; - int flags = req->fs.info.file_flags; - int result; - - - if (flags & UV_FS_SYMLINK_JUNCTION) { - fs__create_junction(req, pathw, new_pathw); - } else if (pCreateSymbolicLinkW) { - result = pCreateSymbolicLinkW(new_pathw, - pathw, - flags & UV_FS_SYMLINK_DIR ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0) ? 0 : -1; - if (result == -1) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - } else { - SET_REQ_RESULT(req, result); - } - } else { - SET_REQ_UV_ERROR(req, UV_ENOSYS, ERROR_NOT_SUPPORTED); - } -} - - -static void fs__readlink(uv_fs_t* req) { - HANDLE handle; - - handle = CreateFileW(req->file.pathw, - 0, - 0, - NULL, - OPEN_EXISTING, - FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, - NULL); - - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - if (fs__readlink_handle(handle, (char**) &req->ptr, NULL) != 0) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - CloseHandle(handle); - return; - } - - req->flags |= UV_FS_FREE_PTR; - SET_REQ_RESULT(req, 0); - - CloseHandle(handle); -} - - -static size_t fs__realpath_handle(HANDLE handle, char** realpath_ptr) { - int r; - DWORD w_realpath_len; - WCHAR* w_realpath_ptr = NULL; - WCHAR* w_realpath_buf; - - w_realpath_len = pGetFinalPathNameByHandleW(handle, NULL, 0, VOLUME_NAME_DOS); - if (w_realpath_len == 0) { - return -1; - } - - w_realpath_buf = uv__malloc((w_realpath_len + 1) * sizeof(WCHAR)); - if (w_realpath_buf == NULL) { - SetLastError(ERROR_OUTOFMEMORY); - return -1; - } - w_realpath_ptr = w_realpath_buf; - - if (pGetFinalPathNameByHandleW(handle, - w_realpath_ptr, - w_realpath_len, - VOLUME_NAME_DOS) == 0) { - uv__free(w_realpath_buf); - SetLastError(ERROR_INVALID_HANDLE); - return -1; - } - - /* convert UNC path to long path */ - if (wcsncmp(w_realpath_ptr, - UNC_PATH_PREFIX, - UNC_PATH_PREFIX_LEN) == 0) { - w_realpath_ptr += 6; - *w_realpath_ptr = L'\\'; - w_realpath_len -= 6; - } else if (wcsncmp(w_realpath_ptr, - LONG_PATH_PREFIX, - LONG_PATH_PREFIX_LEN) == 0) { - w_realpath_ptr += 4; - w_realpath_len -= 4; - } else { - uv__free(w_realpath_buf); - SetLastError(ERROR_INVALID_HANDLE); - return -1; - } - - r = fs__wide_to_utf8(w_realpath_ptr, w_realpath_len, realpath_ptr, NULL); - uv__free(w_realpath_buf); - return r; -} - -static void fs__realpath(uv_fs_t* req) { - HANDLE handle; - - if (!pGetFinalPathNameByHandleW) { - SET_REQ_UV_ERROR(req, UV_ENOSYS, ERROR_NOT_SUPPORTED); - return; - } - - handle = CreateFileW(req->file.pathw, - 0, - 0, - NULL, - OPEN_EXISTING, - FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS, - NULL); - if (handle == INVALID_HANDLE_VALUE) { - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - if (fs__realpath_handle(handle, (char**) &req->ptr) == -1) { - CloseHandle(handle); - SET_REQ_WIN32_ERROR(req, GetLastError()); - return; - } - - CloseHandle(handle); - req->flags |= UV_FS_FREE_PTR; - SET_REQ_RESULT(req, 0); -} - - -static void fs__chown(uv_fs_t* req) { - req->result = 0; -} - - -static void fs__fchown(uv_fs_t* req) { - req->result = 0; -} - - -static void uv__fs_work(struct uv__work* w) { - uv_fs_t* req; - - req = container_of(w, uv_fs_t, work_req); - assert(req->type == UV_FS); - -#define XX(uc, lc) case UV_FS_##uc: fs__##lc(req); break; - switch (req->fs_type) { - XX(OPEN, open) - XX(CLOSE, close) - XX(READ, read) - XX(WRITE, write) - XX(SENDFILE, sendfile) - XX(STAT, stat) - XX(LSTAT, lstat) - XX(FSTAT, fstat) - XX(FTRUNCATE, ftruncate) - XX(UTIME, utime) - XX(FUTIME, futime) - XX(ACCESS, access) - XX(CHMOD, chmod) - XX(FCHMOD, fchmod) - XX(FSYNC, fsync) - XX(FDATASYNC, fdatasync) - XX(UNLINK, unlink) - XX(RMDIR, rmdir) - XX(MKDIR, mkdir) - XX(MKDTEMP, mkdtemp) - XX(RENAME, rename) - XX(SCANDIR, scandir) - XX(LINK, link) - XX(SYMLINK, symlink) - XX(READLINK, readlink) - XX(REALPATH, realpath) - XX(CHOWN, chown) - XX(FCHOWN, fchown); - default: - assert(!"bad uv_fs_type"); - } -} - - -static void uv__fs_done(struct uv__work* w, int status) { - uv_fs_t* req; - - req = container_of(w, uv_fs_t, work_req); - uv__req_unregister(req->loop, req); - - if (status == UV_ECANCELED) { - assert(req->result == 0); - req->result = UV_ECANCELED; - } - - req->cb(req); -} - - -void uv_fs_req_cleanup(uv_fs_t* req) { - if (req->flags & UV_FS_CLEANEDUP) - return; - - if (req->flags & UV_FS_FREE_PATHS) - uv__free(req->file.pathw); - - if (req->flags & UV_FS_FREE_PTR) - uv__free(req->ptr); - - req->path = NULL; - req->file.pathw = NULL; - req->fs.info.new_pathw = NULL; - req->ptr = NULL; - - req->flags |= UV_FS_CLEANEDUP; -} - - -int uv_fs_open(uv_loop_t* loop, uv_fs_t* req, const char* path, int flags, - int mode, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_OPEN, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - req->fs.info.file_flags = flags; - req->fs.info.mode = mode; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__open(req); - return req->result; - } -} - - -int uv_fs_close(uv_loop_t* loop, uv_fs_t* req, uv_file fd, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_CLOSE, cb); - req->file.fd = fd; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__close(req); - return req->result; - } -} - - -int uv_fs_read(uv_loop_t* loop, - uv_fs_t* req, - uv_file fd, - const uv_buf_t bufs[], - unsigned int nbufs, - int64_t offset, - uv_fs_cb cb) { - if (bufs == NULL || nbufs == 0) - return UV_EINVAL; - - uv_fs_req_init(loop, req, UV_FS_READ, cb); - - req->file.fd = fd; - - req->fs.info.nbufs = nbufs; - req->fs.info.bufs = req->fs.info.bufsml; - if (nbufs > ARRAY_SIZE(req->fs.info.bufsml)) - req->fs.info.bufs = uv__malloc(nbufs * sizeof(*bufs)); - - if (req->fs.info.bufs == NULL) - return UV_ENOMEM; - - memcpy(req->fs.info.bufs, bufs, nbufs * sizeof(*bufs)); - - req->fs.info.offset = offset; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__read(req); - return req->result; - } -} - - -int uv_fs_write(uv_loop_t* loop, - uv_fs_t* req, - uv_file fd, - const uv_buf_t bufs[], - unsigned int nbufs, - int64_t offset, - uv_fs_cb cb) { - if (bufs == NULL || nbufs == 0) - return UV_EINVAL; - - uv_fs_req_init(loop, req, UV_FS_WRITE, cb); - - req->file.fd = fd; - - req->fs.info.nbufs = nbufs; - req->fs.info.bufs = req->fs.info.bufsml; - if (nbufs > ARRAY_SIZE(req->fs.info.bufsml)) - req->fs.info.bufs = uv__malloc(nbufs * sizeof(*bufs)); - - if (req->fs.info.bufs == NULL) - return UV_ENOMEM; - - memcpy(req->fs.info.bufs, bufs, nbufs * sizeof(*bufs)); - - req->fs.info.offset = offset; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__write(req); - return req->result; - } -} - - -int uv_fs_unlink(uv_loop_t* loop, uv_fs_t* req, const char* path, - uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_UNLINK, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__unlink(req); - return req->result; - } -} - - -int uv_fs_mkdir(uv_loop_t* loop, uv_fs_t* req, const char* path, int mode, - uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_MKDIR, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - req->fs.info.mode = mode; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__mkdir(req); - return req->result; - } -} - - -int uv_fs_mkdtemp(uv_loop_t* loop, uv_fs_t* req, const char* tpl, - uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_MKDTEMP, cb); - - err = fs__capture_path(req, tpl, NULL, TRUE); - if (err) - return uv_translate_sys_error(err); - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__mkdtemp(req); - return req->result; - } -} - - -int uv_fs_rmdir(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_RMDIR, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__rmdir(req); - return req->result; - } -} - - -int uv_fs_scandir(uv_loop_t* loop, uv_fs_t* req, const char* path, int flags, - uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_SCANDIR, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - req->fs.info.file_flags = flags; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__scandir(req); - return req->result; - } -} - - -int uv_fs_link(uv_loop_t* loop, uv_fs_t* req, const char* path, - const char* new_path, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_LINK, cb); - - err = fs__capture_path(req, path, new_path, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__link(req); - return req->result; - } -} - - -int uv_fs_symlink(uv_loop_t* loop, uv_fs_t* req, const char* path, - const char* new_path, int flags, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_SYMLINK, cb); - - err = fs__capture_path(req, path, new_path, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - req->fs.info.file_flags = flags; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__symlink(req); - return req->result; - } -} - - -int uv_fs_readlink(uv_loop_t* loop, uv_fs_t* req, const char* path, - uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_READLINK, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__readlink(req); - return req->result; - } -} - - -int uv_fs_realpath(uv_loop_t* loop, uv_fs_t* req, const char* path, - uv_fs_cb cb) { - int err; - - if (!req || !path) { - return UV_EINVAL; - } - - uv_fs_req_init(loop, req, UV_FS_REALPATH, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__realpath(req); - return req->result; - } -} - - -int uv_fs_chown(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_uid_t uid, - uv_gid_t gid, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_CHOWN, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__chown(req); - return req->result; - } -} - - -int uv_fs_fchown(uv_loop_t* loop, uv_fs_t* req, uv_file fd, uv_uid_t uid, - uv_gid_t gid, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FCHOWN, cb); - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__fchown(req); - return req->result; - } -} - - -int uv_fs_stat(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_STAT, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__stat(req); - return req->result; - } -} - - -int uv_fs_lstat(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_LSTAT, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__lstat(req); - return req->result; - } -} - - -int uv_fs_fstat(uv_loop_t* loop, uv_fs_t* req, uv_file fd, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FSTAT, cb); - req->file.fd = fd; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__fstat(req); - return req->result; - } -} - - -int uv_fs_rename(uv_loop_t* loop, uv_fs_t* req, const char* path, - const char* new_path, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_RENAME, cb); - - err = fs__capture_path(req, path, new_path, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__rename(req); - return req->result; - } -} - - -int uv_fs_fsync(uv_loop_t* loop, uv_fs_t* req, uv_file fd, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FSYNC, cb); - req->file.fd = fd; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__fsync(req); - return req->result; - } -} - - -int uv_fs_fdatasync(uv_loop_t* loop, uv_fs_t* req, uv_file fd, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FDATASYNC, cb); - req->file.fd = fd; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__fdatasync(req); - return req->result; - } -} - - -int uv_fs_ftruncate(uv_loop_t* loop, uv_fs_t* req, uv_file fd, - int64_t offset, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FTRUNCATE, cb); - - req->file.fd = fd; - req->fs.info.offset = offset; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__ftruncate(req); - return req->result; - } -} - - - -int uv_fs_sendfile(uv_loop_t* loop, uv_fs_t* req, uv_file fd_out, - uv_file fd_in, int64_t in_offset, size_t length, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_SENDFILE, cb); - - req->file.fd = fd_in; - req->fs.info.fd_out = fd_out; - req->fs.info.offset = in_offset; - req->fs.info.bufsml[0].len = length; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__sendfile(req); - return req->result; - } -} - - -int uv_fs_access(uv_loop_t* loop, - uv_fs_t* req, - const char* path, - int flags, - uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_ACCESS, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) - return uv_translate_sys_error(err); - - req->flags = flags; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } - - fs__access(req); - return req->result; -} - - -int uv_fs_chmod(uv_loop_t* loop, uv_fs_t* req, const char* path, int mode, - uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_CHMOD, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - req->fs.info.mode = mode; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__chmod(req); - return req->result; - } -} - - -int uv_fs_fchmod(uv_loop_t* loop, uv_fs_t* req, uv_file fd, int mode, - uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FCHMOD, cb); - - req->file.fd = fd; - req->fs.info.mode = mode; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__fchmod(req); - return req->result; - } -} - - -int uv_fs_utime(uv_loop_t* loop, uv_fs_t* req, const char* path, double atime, - double mtime, uv_fs_cb cb) { - int err; - - uv_fs_req_init(loop, req, UV_FS_UTIME, cb); - - err = fs__capture_path(req, path, NULL, cb != NULL); - if (err) { - return uv_translate_sys_error(err); - } - - req->fs.time.atime = atime; - req->fs.time.mtime = mtime; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__utime(req); - return req->result; - } -} - - -int uv_fs_futime(uv_loop_t* loop, uv_fs_t* req, uv_file fd, double atime, - double mtime, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FUTIME, cb); - - req->file.fd = fd; - req->fs.time.atime = atime; - req->fs.time.mtime = mtime; - - if (cb) { - QUEUE_FS_TP_JOB(loop, req); - return 0; - } else { - fs__futime(req); - return req->result; - } -} |