+static void test16(BattFsSuper *disk)
+{
+ kprintf("Test16: multiple write on file\n");
+
+ FILE *fpt = fopen(test_filename, "w+");
+
+ for (int i = 0; i < FILE_SIZE; i++)
+ fputc(0xff, fpt);
+ fclose(fpt);
+
+ BattFs fd1;
+ unsigned int INODE = 0;
+ unsigned int MODE = BATTFS_CREATE;
+ uint8_t buf[1000];
+
+ ASSERT(battfs_init(disk));
+ ASSERT(battfs_fileopen(disk, &fd1, INODE, MODE));
+
+ int j;
+ for (j = 1; j < 1013; j++)
+ {
+ for (int i = 0; i < sizeof(buf); i++)
+ buf[i] = j+i;
+
+ ASSERT(kfile_write(&fd1.fd, buf, sizeof(buf)) == sizeof(buf));
+ ASSERT(fd1.fd.seek_pos == sizeof(buf));
+ ASSERT(fd1.fd.size == sizeof(buf));
+ ASSERT(kfile_seek(&fd1.fd, 0, KSM_SEEK_SET) == 0);
+ memset(buf, 0, sizeof(buf));
+ ASSERT(kfile_read(&fd1.fd, buf, sizeof(buf)) == sizeof(buf));
+ ASSERT(fd1.fd.seek_pos == sizeof(buf));
+ for (int i = 0; i < sizeof(buf); i++)
+ ASSERT(buf[i] == ((j+i) & 0xff));
+ ASSERT(kfile_seek(&fd1.fd, 0, KSM_SEEK_SET) == 0);
+ ASSERT(disk->free_bytes == disk->disk_size - sizeof(buf));
+ }
+ ASSERT(kfile_close(&fd1.fd) == 0);
+ ASSERT(battfs_close(disk));
+
+ ASSERT(battfs_init(disk));
+ ASSERT(disk->free_bytes == disk->disk_size - sizeof(buf));
+ ASSERT(battfs_fileopen(disk, &fd1, INODE, 0));
+ ASSERT(fd1.fd.size == sizeof(buf));
+ memset(buf, 0, sizeof(buf));
+ ASSERT(kfile_read(&fd1.fd, buf, sizeof(buf)) == sizeof(buf));
+ for (int i = 0; i < sizeof(buf); i++)
+ ASSERT(buf[i] == ((j-1+i) & 0xff));
+ ASSERT(kfile_close(&fd1.fd) == 0);
+ ASSERT(battfs_close(disk));
+
+ kprintf("Test16: passed\n");
+}
+