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In Windows 10 allow creation of symlinks by unpriviliged user

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It's a new feature of Windows 10 build 14972
This commit is contained in:
Andrea Mazzoleni 2016-12-06 08:36:19 +01:00
parent d5308f4a59
commit faa3ca9bf8
1 changed files with 13 additions and 1 deletions
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14
cmdline/mingw.c
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@ -1457,16 +1457,28 @@ int windows_link(const char* existing, const char* file)
return 0;
}
/**
* In Windows 10 allow creationg of symblink by not priviliged 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];
DWORD flags = SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE;
/* 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), 0)) {
if (!CreateSymbolicLinkW(convert(conv_buf_file, file), convert_if_required(conv_buf_existing, existing), flags)) {
windows_errno(GetLastError());
return -1;
}