screen-4.6.2-cygwin-sock-permission.patch

--- screen-v.4.6.2/src/screen.c.orig	2017-10-23 20:18:26.000000000 +0800
+++ screen-v.4.6.2/src/screen.c	2018-09-21 20:36:34.581125000 +0800
@@ -1106,12 +1106,14 @@
           Panic(0, "'%s' must be a directory.", SockDir);
         if (eff_uid == 0 && real_uid && (int)st.st_uid != eff_uid)
           Panic(0, "Directory '%s' must be owned by root.", SockDir);
         n = (eff_uid == 0 && (real_uid || (st.st_mode & 0775) != 0775)) ? 0755 :
             (eff_gid == (int)st.st_gid && eff_gid != real_gid) ? 0775 : 0777;
+#if !defined(__CYGWIN__)
         if (((int)st.st_mode & 0777) != n)
           Panic(0, "Directory '%s' must have mode %03o.", SockDir, n);
+#endif
       }
       sprintf(SockPath, "%s/S-%s", SockDir, LoginName);
       if (access(SockPath, F_OK)) {
         if (mkdir(SockPath, 0700) == -1 && errno != EEXIST)
           Panic(errno, "Cannot make directory '%s'", SockPath);
@@ -1142,12 +1144,14 @@
     if ((int)st.st_uid != real_uid)
       Panic(0, "You are not the owner of %s.", SockPath);
 #endif
   }
 
+#if !defined(__CYGWIN__)
   if ((st.st_mode & 0777) != 0700)
     Panic(0, "Directory %s must have mode 700.", SockPath);
+#endif
   if (SockMatch && index(SockMatch, '/'))
     Panic(0, "Bad session name '%s'", SockMatch);
   SockName = SockPath + strlen(SockPath) + 1;
   *SockName = 0;
   (void) umask(oumask);