X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Fwin32_common.c;h=abfe0a82610c476bcf143099ea4846b5c278e788;hb=036c7da59a54e9a24b1afb917b4f9f10eee176ee;hp=1768fd9bd5076371351c1e5f8fad4ac0ac4966ce;hpb=117e52b79b02f1889f1bccd9d8560b73a965c559;p=wimlib diff --git a/src/win32_common.c b/src/win32_common.c index 1768fd9b..abfe0a82 100644 --- a/src/win32_common.c +++ b/src/win32_common.c @@ -29,10 +29,7 @@ #include -#include - #include "wimlib/win32_common.h" -#include "wimlib/assert.h" #include "wimlib/error.h" #include "wimlib/util.h" @@ -305,7 +302,6 @@ win32_error_to_errno(DWORD err_code) } } - void set_errno_from_win32_error(DWORD err) { @@ -324,126 +320,6 @@ set_errno_from_nt_status(NTSTATUS status) set_errno_from_win32_error((*func_RtlNtStatusToDosError)(status)); } -/* Given a Windows-style path, return the number of characters of the prefix - * that specify the path to the root directory of a drive, or return 0 if the - * drive is relative (or at least on the current drive, in the case of - * absolute-but-not-really-absolute paths like \Windows\System32) */ -static size_t -win32_path_drive_spec_len(const wchar_t *path) -{ - size_t n = 0; - - if (!wcsncmp(path, L"\\\\?\\", 4)) { - /* \\?\-prefixed path. Check for following drive letter and - * path separator. */ - if (path[4] != L'\0' && path[5] == L':' && - is_any_path_separator(path[6])) - n = 7; - } else { - /* Not a \\?\-prefixed path. Check for an initial drive letter - * and path separator. */ - if (path[0] != L'\0' && path[1] == L':' && - is_any_path_separator(path[2])) - n = 3; - } - /* Include any additional path separators.*/ - if (n > 0) - while (is_any_path_separator(path[n])) - n++; - return n; -} - -bool -win32_path_is_root_of_drive(const wchar_t *path) -{ - size_t drive_spec_len; - wchar_t full_path[32768]; - DWORD ret; - - ret = GetFullPathName(path, ARRAY_LEN(full_path), full_path, NULL); - if (ret > 0 && ret < ARRAY_LEN(full_path)) - path = full_path; - - /* Explicit drive letter and path separator? */ - drive_spec_len = win32_path_drive_spec_len(path); - if (drive_spec_len > 0 && path[drive_spec_len] == L'\0') - return true; - - /* All path separators? */ - for (const wchar_t *p = path; *p != L'\0'; p++) - if (!is_any_path_separator(*p)) - return false; - return true; -} - - -/* Given a path, which may not yet exist, get a set of flags that describe the - * features of the volume the path is on. */ -int -win32_get_vol_flags(const wchar_t *path, unsigned *vol_flags_ret, - bool *supports_SetFileShortName_ret) -{ - wchar_t *volume; - BOOL bret; - DWORD vol_flags; - size_t drive_spec_len; - wchar_t filesystem_name[MAX_PATH + 1]; - - if (supports_SetFileShortName_ret) - *supports_SetFileShortName_ret = false; - - drive_spec_len = win32_path_drive_spec_len(path); - - if (drive_spec_len == 0) - if (path[0] != L'\0' && path[1] == L':') /* Drive-relative path? */ - drive_spec_len = 2; - - if (drive_spec_len == 0) { - /* Path does not start with a drive letter; use the volume of - * the current working directory. */ - volume = NULL; - } else { - /* Path starts with a drive letter (or \\?\ followed by a drive - * letter); use it. */ - volume = alloca((drive_spec_len + 2) * sizeof(wchar_t)); - wmemcpy(volume, path, drive_spec_len); - /* Add trailing backslash in case this was a drive-relative - * path. */ - volume[drive_spec_len] = L'\\'; - volume[drive_spec_len + 1] = L'\0'; - } - bret = GetVolumeInformation( - volume, /* lpRootPathName */ - NULL, /* lpVolumeNameBuffer */ - 0, /* nVolumeNameSize */ - NULL, /* lpVolumeSerialNumber */ - NULL, /* lpMaximumComponentLength */ - &vol_flags, /* lpFileSystemFlags */ - filesystem_name, /* lpFileSystemNameBuffer */ - ARRAY_LEN(filesystem_name)); /* nFileSystemNameSize */ - if (!bret) { - set_errno_from_GetLastError(); - WARNING_WITH_ERRNO("Failed to get volume information for " - "path \"%ls\"", path); - vol_flags = 0xffffffff; - goto out; - } - - if (wcsstr(filesystem_name, L"NTFS")) { - /* FILE_SUPPORTS_HARD_LINKS is only supported on Windows 7 and later. - * Force it on anyway if filesystem is NTFS. */ - vol_flags |= FILE_SUPPORTS_HARD_LINKS; - - if (supports_SetFileShortName_ret) - *supports_SetFileShortName_ret = true; - } - -out: - DEBUG("using vol_flags = %x", vol_flags); - *vol_flags_ret = vol_flags; - return 0; -} - static bool win32_modify_privilege(const wchar_t *privilege, bool enable) { @@ -534,13 +410,6 @@ NTSTATUS (WINAPI *func_NtReadFile) (HANDLE FileHandle, PLARGE_INTEGER ByteOffset, PULONG Key); -NTSTATUS (WINAPI *func_NtOpenFile) (PHANDLE FileHandle, - ACCESS_MASK DesiredAccess, - POBJECT_ATTRIBUTES ObjectAttributes, - PIO_STATUS_BLOCK IoStatusBlock, - ULONG ShareAccess, - ULONG OpenOptions); - NTSTATUS (WINAPI *func_NtQueryInformationFile)(HANDLE FileHandle, PIO_STATUS_BLOCK IoStatusBlock, PVOID FileInformation,