From 47143c3868ceeb04c15444633089282d87647742 Mon Sep 17 00:00:00 2001
From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Wed, 2 May 2007 03:13:55 +0900
Subject: [PATCH] add bogus bidi test utility

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 Makefile    |    5 ++-
 bidi_test.c |  125 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 129 insertions(+), 1 deletions(-)

diff --git a/Makefile b/Makefile
index 16ed0c5..738598b 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ KSRC ?= /lib/modules/$(KERNELRELEASE)/bu
 
 CFLAGS += -O2 -fno-inline -Wall -Wstrict-prototypes -g -I$(KSRC)/include
 
-PROGRAMS = sgv4_dd sgv4_bench smp_rep_manufacturer
+PROGRAMS = sgv4_dd sgv4_bench smp_rep_manufacturer bidi_test
 
 all: $(PROGRAMS)
 
@@ -16,5 +16,8 @@ sgv4_bench: sgv4_bench.o libbsg.o
 smp_rep_manufacturer: smp_rep_manufacturer.o libbsg.o
 	$(CC) $^ -o $@
 
+bidi_test: bidi_test.o libbsg.o
+	$(CC) $^ -o $@
+
 clean:
 	rm -f *.o $(PROGRAMS)
diff --git a/bidi_test.c b/bidi_test.c
new file mode 100644
index 0000000..c420b77
--- /dev/null
+++ b/bidi_test.c
@@ -0,0 +1,125 @@
+/*
+ * makeshift tool to send bogus bidi requests via bsg
+ *
+ * Copyright (C) 2007 FUJITA Tomonori <tomof@acm.org>
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <scsi/scsi.h>
+#include <scsi/sg.h>
+#include <linux/bsg.h>
+
+#include "libbsg.h"
+
+#define SECTOR_SIZE 512
+
+#ifndef VARLEN_CDB
+#define VARLEN_CDB            0x7f
+#endif
+
+static char pname[] = "osd_list";
+
+static struct option const long_options[] =
+{
+	{"help", no_argument, 0, 'h'},
+	{0, 0, 0, 0},
+};
+
+static void usage(int status)
+{
+	if (status)
+		fprintf(stderr, "Try `%s --help' for more information.\n", pname);
+	else {
+		printf("Usage: %s [DEVICE]\n", pname);
+		printf("\
+  -h, --help              display this help and exit\n\
+");
+	}
+	exit(status);
+}
+
+static int do_bsg(int bsg_fd)
+{
+	struct sg_io_v4 hdr;
+/* 	char scb[250], sense[32], *buf; */
+	char scb[16], sense[32], *buf;
+	int bufsize = 1024, ret;
+
+	buf = valloc(bufsize * 2);
+
+	memset(&hdr, 0, sizeof(hdr));
+	memset(&scb, 0, sizeof(scb));
+
+	/* XDWRITEREAD(10) */
+	scb[0] = 0x50;
+/* 	scb[0] = VARLEN_CDB; */
+/* 	scb[7] = 200 - 8; */
+	scb[7] = (unsigned char)(((bufsize / SECTOR_SIZE) >> 8) & 0xff);
+	scb[8] = (unsigned char)((bufsize / SECTOR_SIZE) & 0xff);
+
+	hdr.guard = 'Q';
+	hdr.request_len = sizeof(scb);
+	hdr.request = (unsigned long) scb;
+	hdr.max_response_len = sizeof(sense);
+	hdr.response = (unsigned long) sense;
+
+	hdr.din_xfer_len = bufsize;
+	hdr.din_xferp = (unsigned long) buf;
+
+	hdr.dout_xfer_len = bufsize;
+	hdr.dout_xferp = (unsigned long) (buf + bufsize);
+
+	ret = write(bsg_fd, &hdr, sizeof(hdr));
+	if (ret != sizeof(hdr)) {
+		fprintf(stderr, "Can't send a bsg request, %m\n");
+		goto out;
+	}
+
+	ret = read(bsg_fd, &hdr, sizeof(hdr));
+	if (ret != sizeof(hdr))
+		fprintf(stderr, "Can't get a bsg response, %m\n");
+
+out:
+	free(buf);
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
+	int longindex, ch;
+	int bsg_fd;
+
+	while ((ch = getopt_long(argc, argv, "h", long_options,
+				 &longindex)) >= 0) {
+		switch (ch) {
+		case 'h':
+			usage(0);
+			break;
+		default:
+			usage(1);
+			break;
+		}
+	}
+
+	bsg_fd = open_bsg_dev(argv[optind]);
+	if (bsg_fd < 0) {
+		fprintf(stderr, "Can't open %s's bsg device.\n", argv[optind]);
+	}
+
+	do_bsg(bsg_fd);
+
+	close(bsg_fd);
+
+	return 0;
+}
-- 
1.4.3.2