Hmm.  I find this diff in my local source tree.  it allow interpreter
names (incl arguments) to the the max path length.

I recall sending it off to somebody, i don't remember who, for
review/comment, but don't recall hearing anything back.

Anyway, enjoy; do with it what you will.


cgd
--
Index: kern/exec_conf.c
===================================================================
RCS file: /cvsroot/syssrc/sys/kern/exec_conf.c,v
retrieving revision 1.77
diff -u -p -r1.77 exec_conf.c
--- kern/exec_conf.c	2002/11/13 15:16:27	1.77
+++ kern/exec_conf.c	2002/11/23 05:33:33
@@ -189,7 +189,7 @@ extern const struct emul emul_netbsd_aou
 const struct execsw execsw_builtin[] = {
 #ifdef EXEC_SCRIPT
 	/* Shell scripts */
-	{ MAXINTERP,
+	{ SCRIPT_HDR_SIZE,
 	  exec_script_makecmds,
 	  { NULL },
 	  NULL,
Index: kern/exec_script.c
===================================================================
RCS file: /cvsroot/syssrc/sys/kern/exec_script.c,v
retrieving revision 1.32
diff -u -p -r1.32 exec_script.c
--- kern/exec_script.c	2002/10/29 12:31:23	1.32
+++ kern/exec_script.c	2002/11/23 05:33:33
@@ -96,7 +96,7 @@ exec_script_makecmds(struct proc *p, str
 	 * (The latter requirement means that we have to check
 	 * for both spaces and tabs later on.)
 	 */
-	hdrlinelen = min(epp->ep_hdrvalid, MAXINTERP);
+	hdrlinelen = min(epp->ep_hdrvalid, SCRIPT_HDR_SIZE);
 	for (cp = hdrstr + EXEC_SCRIPT_MAGICLEN; cp < hdrstr + hdrlinelen;
 	    cp++) {
 		if (*cp == '\n') {
Index: sys/exec_script.h
===================================================================
RCS file: /cvsroot/syssrc/sys/sys/exec_script.h,v
retrieving revision 1.7
diff -u -p -r1.7 exec_script.h
--- sys/exec_script.h	1997/01/22 07:09:15	1.7
+++ sys/exec_script.h	2002/11/23 05:33:33
@@ -36,6 +36,9 @@
 #define	EXEC_SCRIPT_MAGIC	"#!"
 #define	EXEC_SCRIPT_MAGICLEN	2
 
+/* Extra 2 are for possible space between #! and shell name, and newline.  */
+#define SCRIPT_HDR_SIZE		(EXEC_SCRIPT_MAGICLEN + MAXINTERP + 2)
+
 #ifdef _KERNEL
 
 /* the shell script handler's entry in the exec switch */
Index: sys/param.h
===================================================================
RCS file: /cvsroot/syssrc/sys/sys/param.h,v
retrieving revision 1.153
diff -u -p -r1.153 param.h
--- sys/param.h	2002/11/17 22:53:46	1.153
+++ sys/param.h	2002/11/23 05:33:34
@@ -100,7 +100,7 @@
 #include <sys/syslimits.h>
 
 #define	MAXCOMLEN	16		/* max command name remembered */
-#define	MAXINTERP	64		/* max interpreter file name length */
+#define	MAXINTERP	PATH_MAX	/* max interpreter file name length */
 /* DEPRECATED: use LOGIN_NAME_MAX instead. */
 #define	MAXLOGNAME	(LOGIN_NAME_MAX - 1) /* max login name length */
 #define	NCARGS		ARG_MAX		/* max bytes for an exec function */