From 12828dfcf5a79384e6c7b854ddfbf18525c0cb56 Mon Sep 17 00:00:00 2001
From: zrj <rimvydas.jasinskas@gmail.com>
Date: Wed, 31 Jan 2018 14:08:56 +0200
Subject: [PATCH] truncate(1): Add support for T.

While there, add fallthrough.
---
 usr.bin/truncate/Makefile   |  1 -
 usr.bin/truncate/truncate.1 | 13 +++++++------
 usr.bin/truncate/truncate.c | 10 ++++++++--
 3 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/usr.bin/truncate/Makefile b/usr.bin/truncate/Makefile
index 20ce190377..bd4d30fa89 100644
--- a/usr.bin/truncate/Makefile
+++ b/usr.bin/truncate/Makefile
@@ -1,5 +1,4 @@
 # $FreeBSD: src/usr.bin/truncate/Makefile,v 1.1.2.1 2000/08/04 08:05:52 sheldonh Exp $
-# $DragonFly: src/usr.bin/truncate/Makefile,v 1.5 2008/11/03 00:25:45 pavalos Exp $
 
 PROG=		truncate
 
diff --git a/usr.bin/truncate/truncate.1 b/usr.bin/truncate/truncate.1
index 8d57ded7e0..b6fc75e6f8 100644
--- a/usr.bin/truncate/truncate.1
+++ b/usr.bin/truncate/truncate.1
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD: src/usr.bin/truncate/truncate.1,v 1.4.2.7 2001/08/16 13:17:08 ru Exp $
 .\"
-.Dd July 4, 2000
+.Dd February 2, 2018
 .Dt TRUNCATE 1
 .Os
 .Sh NAME
@@ -39,7 +39,7 @@
 .Sm off
 .Op Cm + | -
 .Ar size
-.Op Cm K | M | G
+.Op Cm K | M | G | T
 .Sm on
 .Xc
 .Ek
@@ -71,7 +71,7 @@ Truncate files to the length of the file
 .Sm off
 .Op Cm + | -
 .Ar size
-.Op Cm K | M | G
+.Op Cm K | M | G | T
 .Sm on
 .Xc
 If the
@@ -94,11 +94,12 @@ The
 .Ar size
 argument may be suffixed with one of
 .Cm K ,
-.Cm M
-or
+.Cm M ,
 .Cm G
+or
+.Cm T
 to indicate a multiple of
-Kilobytes, Megabytes or Gigabytes
+Kilobytes, Megabytes, Gigabytes or Terabytes
 respectively.
 .El
 .Pp
diff --git a/usr.bin/truncate/truncate.c b/usr.bin/truncate/truncate.c
index 8fee51661d..82dad800d5 100644
--- a/usr.bin/truncate/truncate.c
+++ b/usr.bin/truncate/truncate.c
@@ -24,7 +24,6 @@
  * SUCH DAMAGE.
  *
  * $FreeBSD: src/usr.bin/truncate/truncate.c,v 1.6.2.1 2000/08/04 08:05:52 sheldonh Exp $
- * $DragonFly: src/usr.bin/truncate/truncate.c,v 1.3 2003/10/04 20:36:53 hmp Exp $
  */
 
 #include <sys/stat.h>
@@ -158,6 +157,7 @@ parselength(char *ls, off_t *sz)
 	switch (*ls) {
 	case '-':
 		lsign = -1;
+		/* FALLTHROUGH */
 	case '+':
 		ls++;
 	}
@@ -173,12 +173,18 @@ parselength(char *ls, off_t *sz)
 	}
 
 	switch (*ls) {
+	case 'T':
+		oflow = length * 1024;
+		ASSIGN_CHK_OFLOW(oflow, length);
+		/* FALLTHROUGH */
 	case 'G':
 		oflow = length * 1024;
 		ASSIGN_CHK_OFLOW(oflow, length);
+		/* FALLTHROUGH */
 	case 'M':
 		oflow = length * 1024;
 		ASSIGN_CHK_OFLOW(oflow, length);
+		/* FALLTHROUGH */
 	case 'K':
 		if (ls[1] != '\0')
 			return -1;
@@ -198,7 +204,7 @@ static void
 usage(void)
 {
 	fprintf(stderr, "%s\n%s\n",
-	    "usage: truncate [-c] -s [+|-]size[K|M|G] file ...",
+	    "usage: truncate [-c] -s [+|-]size[K|M|G|T] file ...",
 	    "       truncate [-c] -r rfile file ...");
 	exit(EXIT_FAILURE);
 }
-- 
2.11.4.GIT