$NetBSD: patch-ab,v 1.6 2025/04/21 20:58:42 wiz Exp $

--- mmv.c.orig	1993-10-25 10:29:39.000000000 +0000
+++ mmv.c
@@ -120,13 +120,17 @@ extern unsigned _stklen = 10000;
 #else
 /* for various flavors of UN*X */
 
+#include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/file.h>
+#include <sys/param.h>
+#include <limits.h>
 
+#if !(defined(BSD) && BSD >= 199306)
 extern char *getenv();
 extern long lseek();
-extern char *malloc();
+#endif
 
 #ifdef HAS_DIRENT
 #include <dirent.h>
@@ -197,6 +201,9 @@ struct utimbuf {
 };
 #define utimes(f, t) utime((f), &(t))
 
+#endif
+
+#ifdef IS_SYSV
 #ifndef HAS_RENAME
 #ifndef MV_DIR
 # define MV_DIR "/usr/lib/mv_dir"
@@ -436,7 +443,7 @@ static CHUNK *freechunks = NULL;
 static SLICER slicer[2] = {{NULL, NULL, 0}, {NULL, NULL, 0}};
 
 static int badreps = 0, paterr = 0, direrr, failed = 0, gotsig = 0, repbad;
-static FILE *outfile = stdout;
+static FILE *outfile;
 
 static char IDF[] = "$$mmvdid.";
 static char TEMP[] = "$$mmvtmp.";
@@ -497,6 +504,8 @@ int main(argc, argv)
 {
 	char *frompat, *topat;
 
+	outfile = stdout;
+
 	init();
 	procargs(argc, argv, &frompat, &topat);
 	domatch(frompat, topat);
@@ -1415,6 +1424,9 @@ static int badname(s)
 		(*ext == '.' && strchr(ext + 1, '.') != NULL) ||
 		strlen(ext) >= MAXEXT ||
 		strncmp(s, IDF, STRLEN(IDF)) == 0
+#elif defined(NAME_MAX)
+		(*s == '.' && (s[1] == '\0' || strcmp(s, "..") == 0)) ||
+		strlen(s) > NAME_MAX
 #else
 		(*s == '.' && (s[1] == '\0' || strcmp(s, "..") == 0)) ||
 		strlen(s) > MAXNAMLEN