From fcaaad3317ee74f63059b957dbc8dc212728d105 Mon Sep 17 00:00:00 2001
From: Erik van der Kouwe <erik@minix3.org>
Date: Wed, 9 Dec 2009 13:42:33 +0000
Subject: [PATCH] Add Ben's test 44

---
 test/test44.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 test/test44.c

diff --git a/test/test44.c b/test/test44.c
new file mode 100644
index 000000000..4f9e73466
--- /dev/null
+++ b/test/test44.c
@@ -0,0 +1,67 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+int
+main(int argc, char *argv[])
+{
+#define CHUNKSIZE 8192
+#define CHUNKS1	3
+#define CHUNKS2	2
+#define CHUNKS (CHUNKS1+CHUNKS2)
+	int i, fd;
+	char *v[CHUNKS];
+#define STARTV 0x90000000
+	char *vaddr = (char *) STARTV;
+	ssize_t l;
+
+	printf("Test 44 ");
+	fflush(stdout);
+
+	for(i = 0; i < CHUNKS; i++) {
+		v[i] = mmap(vaddr, CHUNKSIZE, PROT_READ|PROT_WRITE, 0, -1, 0);
+		if(v[i] == MAP_FAILED) {
+			perror("mmap");
+			fprintf(stderr, "mmap failed\n");
+			exit(1);
+		}
+		if(v[i] != vaddr) {
+			fprintf(stderr, "mmap said 0x%p but i wanted 0x%p\n",
+				v[i], vaddr);
+			exit(1);
+		}
+		vaddr += CHUNKSIZE;
+	}
+
+#define DEV_ZERO "/dev/zero"
+	if((fd=open(DEV_ZERO, O_RDONLY)) < 0) {
+		perror("open");
+		fprintf(stderr, "open failed for %s\n", DEV_ZERO);
+		exit(1);
+	}
+
+#define TOTAL1 (CHUNKS1*CHUNKSIZE)
+	/* Make single read cross region boundary. */
+	if((l=read(fd, v[0], TOTAL1)) != TOTAL1) {
+		fprintf(stderr, "read %d but expected %d\n", l, TOTAL1);
+		exit(1);
+	}
+
+	/* Force single copy to cross region boundary. */
+	{
+		char *t;
+		t = v[CHUNKS1]+CHUNKSIZE-2;
+		if((l=read(fd, t, CHUNKSIZE)) != CHUNKSIZE) {
+			fprintf(stderr, "read %d but expected %d\n", l, CHUNKSIZE);
+			exit(1);
+		}
+	}
+
+	printf("ok\n");
+
+	exit(0);
+}
+
-- 
2.44.0