Document changes to mhbuild.

[nmh] / uip / slocal.c

diff --git a/uip/slocal.c b/uip/slocal.c
index a807d816b29a8f17e8ee7ad3f1df98bf1eb0fbc7..fb21c88015faed6b40ea8f58cef52c1ba9004104 100644 (file)
--- a/uip/slocal.c
+++ b/uip/slocal.c
@@ -34,6 +34,10 @@
 #include <sys/ioctl.h>
 #include <fcntl.h>
 
+/* Hopefully, grp.h declares initgroups().  If we run into a platform
+   where it doesn't, we could consider declaring it here as well. */
+#include <grp.h>
+
 /* This define is needed for Berkeley db v2 and above to
  * make the header file expose the 'historical' ndbm APIs.
  * We define it unconditionally because this is simple and
@@ -278,6 +282,16 @@ main (int argc, char **argv)
        chdir ("/");
     umask (0077);
 
+    if (geteuid() == 0) {
+       if (setgid (pw->pw_gid) != 0) {
+           adios ("setgid", "unable to set group to %ld", (long) pw->pw_gid);
+       }
+       initgroups (pw->pw_name, pw->pw_gid);
+       if (setuid (pw->pw_uid) != 0) {
+           adios ("setuid", "unable to set user to %ld", (long) pw->pw_uid);
+       }
+    }
+
     if (info == NULL)
        info = "";