From: Charles Manning <cdhmanning@gmail.com>
Date: Wed, 21 Dec 2011 03:41:57 +0000 (+1300)
Subject: yaffs large file support: Add more tests
X-Git-Tag: pre-driver-refactoring~34^2~2
X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=commitdiff_plain;h=236044674b17ac4455b44cb4bdb0ea99107d9a99

yaffs large file support: Add more tests

Signed-off-by: Charles Manning <cdhmanning@gmail.com>
---

diff --git a/linux-tests/Makefile b/linux-tests/Makefile
index 1f1d56e..5266481 100644
--- a/linux-tests/Makefile
+++ b/linux-tests/Makefile
@@ -1,6 +1,6 @@
 CFLAGS += -Wall -D_FILE_OFFSET_BITS=64
 
-TARGETS = xattrtest writebigsparse
+TARGETS = xattrtest writebigsparse verifybigsparse
 all: $(TARGETS)
 
 xattrtest: xattrtest.c
@@ -8,6 +8,9 @@ xattrtest: xattrtest.c
 
 writebigsparse: writebigsparse.c
 	gcc $(CFLAGS) -o $@ $<
+
+verifybigsparse: verifybigsparse.c
+	gcc $(CFLAGS) -o $@ $<
 	
 
 .PHONEY: clean
diff --git a/linux-tests/verifybigsparse.c b/linux-tests/verifybigsparse.c
new file mode 100644
index 0000000..84ff53b
--- /dev/null
+++ b/linux-tests/verifybigsparse.c
@@ -0,0 +1,110 @@
+#define _LARGEFILE64_SOURCE
+#include<stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+#define N_WRITES 2000
+#define STRIDE	 2000
+
+#define BUFFER_N 1100
+unsigned  xxbuffer[BUFFER_N];
+
+
+void set_buffer(int n)
+{
+	int i;
+	for(i = 0; i < BUFFER_N; i++)
+		xxbuffer[i] = i + n;
+}
+
+
+void verify_big_sparse_file(int h)
+{
+	unsigned check_buffer[BUFFER_N];
+	int i;
+	loff_t offset = 0;
+	loff_t pos;
+	int n = sizeof(check_buffer);
+	int result;
+	const char * check_type;
+	int checks_failed = 0;
+	int checks_passed = 0;
+
+	for(i = 0; i < N_WRITES * STRIDE; i++) {
+		if(i % STRIDE) {
+			check_type = "zero";
+			memset(xxbuffer,0, n);
+		} else {
+			check_type = "buffer";
+			set_buffer(i/STRIDE);
+		}
+		printf("%s checking %lld\n", check_type, offset);
+		pos = lseek64(h, offset, SEEK_SET);
+		if(pos != offset) {
+			printf("mismatched seek pos %lld offset %lld\n",
+				pos, offset);
+			perror("lseek64");
+			exit(1);
+		}
+		result = read(h, check_buffer, n);
+
+		if(result != n) {
+			printf("mismatched read result %d n %d\n", result, n);
+			exit(1);
+		}
+
+
+
+
+		if(memcmp(xxbuffer, check_buffer, n)) {
+			int j;
+
+			printf("buffer at %lld mismatches\n", pos);
+			printf("xxbuffer ");
+			for(j = 0; j < 20; j++)
+				printf(" %d",xxbuffer[j]);
+			printf("\n");
+			printf("check_buffer ");
+			for(j = 0; j < 20; j++)
+				printf(" %d",check_buffer[j]);
+			printf("\n");
+
+			checks_failed++;
+		} else {
+			checks_passed++;
+		}
+
+		offset += sizeof(xxbuffer);
+	}
+
+	printf("%d checks passed, %d checks failed\n", checks_passed, checks_failed);
+
+}
+
+
+int main(int argc, char *argv[])
+{
+	int handle;
+
+	if(argc < 2) {
+		printf("Gimme a file name!\n");
+		exit(1);
+	}
+
+	handle = open(argv[1], O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
+
+	if(handle < 0) {
+		perror("opening file");
+		exit(1);
+	}
+
+	verify_big_sparse_file(handle);
+
+	printf("Job done\n");
+	return 0;
+}
diff --git a/linux-tests/writebigsparse.c b/linux-tests/writebigsparse.c
index fab2d16..9f95d24 100644
--- a/linux-tests/writebigsparse.c
+++ b/linux-tests/writebigsparse.c
@@ -6,31 +6,31 @@
 #include <unistd.h>
 #include <stdlib.h>
 
-int handle;
 
-#define N_WRITES 8000
-#define STRIDE	 1000
+#define N_WRITES 2000
+#define STRIDE	 2000
 
-#define BUFFER_N 2000
-unsigned  buffer[BUFFER_N];
+#define BUFFER_N 1100
+unsigned  xxbuffer[BUFFER_N];
 
 
 void set_buffer(int n)
 {
 	int i;
 	for(i = 0; i < BUFFER_N; i++)
-		buffer[i] = i + n;
+		xxbuffer[i] = i + n;
 }
 
 void write_big_sparse_file(int h)
 {
 	int i;
-	off64_t offset = 0;
-	off64_t pos;
-	int n = sizeof(buffer);
+	loff_t offset = 0;
+	loff_t pos;
+	int n = sizeof(xxbuffer);
 	int wrote;
-	
-	for(i = 0; i < 4000; i++) {
+
+	for(i = 0; i < N_WRITES; i++) {
+		printf("writing at %lld\n", offset);
 		set_buffer(i);
 		pos = lseek64(h, offset, SEEK_SET);
 		if(pos != offset) {
@@ -39,43 +39,39 @@ void write_big_sparse_file(int h)
 			perror("lseek64");
 			exit(1);
 		}
-		wrote = write(h, buffer, n);
-		
+		wrote = write(h, xxbuffer, n);
+
 		if(wrote != n) {
 			printf("mismatched write wrote %d n %d\n", wrote, n);
 			exit(1);
 		}
-		
-		offset += (STRIDE * sizeof(buffer));
-	}
-}
-
 
+		offset += (STRIDE * sizeof(xxbuffer));
+	}
 
+	ftruncate(h, offset);
 
-void verify_big_sparse_file(int h)
-{
 }
 
+
 int main(int argc, char *argv[])
 {
+	int handle;
 
 	if(argc < 2) {
 		printf("Gimme a file name!\n");
 		exit(1);
 	}
-	
+
 	handle = open(argv[1], O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
-	
+
 	if(handle < 0) {
 		perror("opening file");
 		exit(1);
 	}
-	
+
 	write_big_sparse_file(handle);
-	system("sudo echo 3 > /proc/sys/vm/drop_caches");
-	verify_big_sparse_file(handle);
-	
+
 	printf("Job done\n");
 	return 0;
 }