yaffs large file support: Add more tests

[yaffs2.git] / linux-tests / verifybigsparse.c

diff --git a/linux-tests/verifybigsparse.c b/linux-tests/verifybigsparse.c
new file mode 100644 (file)
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;
+}