Patch from Luc Van Oostenryck to fix a buffer overflow

in getlogin_r

diff --git a/libc/unistd/getlogin.c b/libc/unistd/getlogin.c
index c762c36..6db73ae 100644 (file)
--- a/libc/unistd/getlogin.c
+++ b/libc/unistd/getlogin.c
@@ -42,7 +42,7 @@ int getlogin_r(char *name, size_t len)
                return -1;
 
        strncpy(name, foo, len);
-       name[len] = '\0';
+       name[len-1] = '\0';
        return 0;
 }