From 38101a6c906212e4ae34857fcd015c44243487f0 Mon Sep 17 00:00:00 2001
From: Erez Zadok <ezk@cs.sunysb.edu>
Date: Tue, 29 Mar 2011 23:45:35 -0400
Subject: [PATCH] ftruncate tests

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---
 progs/Makefile           |  2 +-
 progs/ftruncate-unlink.c | 64 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 progs/ftruncate-unlink.c

diff --git a/progs/Makefile b/progs/Makefile
index b2c448a..bfcb5c1 100644
--- a/progs/Makefile
+++ b/progs/Makefile
@@ -19,7 +19,7 @@
 CFLAGS=-g -Wall # -Werror # -lefence
 MOUNTPOINT=.
 BINS=open-unlink flock-copyup fsync truncate bug418 rmdircheckinode \
-	creat-open rename mapper queryfile mapper2
+	creat-open rename mapper queryfile mapper2 ftruncate-unlink
 
 all: $(BINS)
 
diff --git a/progs/ftruncate-unlink.c b/progs/ftruncate-unlink.c
new file mode 100644
index 0000000..380e8aa
--- /dev/null
+++ b/progs/ftruncate-unlink.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2003-2007 Erez Zadok
+ * Copyright (c) 2003-2006 Charles P. Wright
+ * Copyright (c) 2005-2007 Josef 'Jeff' Sipek
+ * Copyright (c) 2005-2006 Junjiro Okajima
+ * Copyright (c) 2005      Arun M. Krishnakumar
+ * Copyright (c) 2004-2006 David P. Quigley
+ * Copyright (c) 2003-2004 Mohammad Nayyer Zubair
+ * Copyright (c) 2003      Puja Gupta
+ * Copyright (c) 2003      Harikesavan Krishnan
+ * Copyright (c) 2003-2007 Stony Brook University
+ * Copyright (c) 2003-2007 The Research Foundation of SUNY
+ *
+ * For specific licensing information, see the COPYING file distributed with
+ * this package.
+ *
+ * This Copyright notice must be kept intact and distributed with all sources.
+ */
+
+/* ftruncate() an open but unlink'ed file */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+
+
+void usage(const char *argv) {
+	fprintf(stderr, "%s file size\n", argv);
+	exit(1);
+}
+
+int main(int argc, char *argv[]) {
+	off_t size;
+	char *end;
+	int fd;
+
+	if (argc != 3) {
+		usage(argv[0]);
+	}
+	fd = open(argv[1], O_RDWR);
+	if (fd == -1) {
+		perror("open");
+		exit(1);
+	}
+	size = strtoul(argv[2], &end, 0);
+	if (*end) {
+		usage(argv[0]);
+	}
+	if (unlink(argv[1]) == -1) {
+		perror("unlink");
+		exit(1);
+	}
+	if (ftruncate(fd, size) == -1) {
+		perror("ftruncate");
+		exit(1);
+	}
+	if (close(fd) == -1) {
+		perror("close");
+		exit(1);
+	}
+	exit(0);
+}
-- 
2.43.0