1 files changed, 33 insertions, 0 deletions
diff --git a/gnu/libexec/uucp/libunix/app4.c b/gnu/libexec/uucp/libunix/app4.c
new file mode 100644
index 000000000000..a3b3787f68fd
--- /dev/null
+++ b/gnu/libexec/uucp/libunix/app4.c
@@ -0,0 +1,33 @@
+/* app4.c
+   Stick three directories and a file name together.  */
+
+#include "uucp.h"
+
+#include "uudefs.h"
+#include "sysdep.h"
+
+char *
+zsappend4 (zdir1, zdir2, zdir3, zfile)
+     const char *zdir1;
+     const char *zdir2;
+     const char *zdir3;
+     const char *zfile;
+{
+  size_t cdir1, cdir2, cdir3, cfile;
+  char *zret;
+
+  cdir1 = strlen (zdir1);
+  cdir2 = strlen (zdir2);
+  cdir3 = strlen (zdir3);
+  cfile = strlen (zfile);
+  zret = zbufalc (cdir1 + cdir2 + cdir3 + cfile + 4);
+  memcpy (zret, zdir1, cdir1);
+  memcpy (zret + cdir1 + 1, zdir2, cdir2);
+  memcpy (zret + cdir1 + cdir2 + 2, zdir3, cdir3);
+  memcpy (zret + cdir1 + cdir2 + cdir3 + 3, zfile, cfile);
+  zret[cdir1] = '/';
+  zret[cdir1 + cdir2 + 1] = '/';
+  zret[cdir1 + cdir2 + cdir3 + 2] = '/';
+  zret[cdir1 + cdir2 + cdir3 + cfile + 3] = '\0';
+  return zret;
+}