misc std/os for windows

[timotheecour]

links

improve windows support for symlinks · Issue #16784 · nim-lang/Nim

[timotheecour]

• symbolic links

But Windows Vista and up have a different softlink called a symbolic link, and that is recommended over Junctions any day. – unixman83 Oct 27 '11 at 16:51

https://github.com/googleprojectzero/symboliclink-testing-tools/blob/master/CommonUtils/ReparsePoint.cpp

bool ReparsePoint::IsSymlink(const std::wstring& path)
{
	return IsReparseTag(path, IO_REPARSE_TAG_SYMLINK);
}

2.1.2.4 Symbolic Link Reparse Data Buffer

https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/b41f1cbf-10df-4a47-98d4-1c52a833d913

https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/c8e77b37-3909-4fe6-a4ea-2b9d423b1ee4

https://stackoverflow.com/questions/1447575/symlinks-on-windows

Symlinks as they were introduced in Vista are implemented as reparse points and thus closer to symlinks in POSIX. Hardlinks got nothing to do with that. – 0xC0000022L Nov 11 '14 at 13:56

• https://blogs.windows.com/windowsdeveloper/2016/12/02/symlinks-windows-10/

Starting with Windows 10 Insiders build 14972, symlinks can be created without needing to elevate the console as administrator. This will allow developers, tools and projects, that previously struggled to work effectively on Windows due to symlink issues, to behave just as efficiently and reliably as they do on Linux or OSX.

Now in Windows 10 Creators Update, a user (with admin rights) can first enable Developer Mode, and then any user on the machine can run the mklink command without elevating a command-line console.

SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE 0x2	Specify this flag to allow creation of symbolic links when the process is not elevated

SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE0x2	Specify this flag to allow creation of symbolic links when the process is not elevated. Developer Mode must first be enabled on the machine before this option will function.

https://en.wikipedia.org/wiki/Symbolic_link

https://stackoverflow.com/questions/43355180/windows-command-line-dectect-if-there-is-symlink-folder-in-path

https://en.cppreference.com/w/cpp/filesystem/is_symlink

dotnet/runtime#24271

https://stackoverflow.com/questions/32525393/finding-where-a-symbolic-link-points-to-windows

https://docs.microsoft.com/en-us/windows/win32/fileio/symbolic-link-effects-on-file-systems-functions

https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/fsutil

[timotheecour]

• realpath https://stackoverflow.com/a/26354331/1426932

void realpath(const char *filename, wchar_t *pathbuf, int size)
{
    OFSTRUCT of;
    HANDLE file = (HANDLE)OpenFile(filename,&of,OF_READ);
    GetFinalPathNameByHandle(file,pathbuf,size,FILE_NAME_OPENED);
    CloseHandle(file);
}