1 files changed, 103 insertions, 0 deletions
diff --git a/backend/epkowa_scsi.c b/backend/epkowa_scsi.c
new file mode 100644
index 0000000..9132507
--- /dev/null
+++ b/backend/epkowa_scsi.c
@@ -0,0 +1,103 @@
+#include "epkowa_scsi.h"
+
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef NEED_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#include <string.h>		/* for memset and memcpy */
+
+/*
+ * sense handler for the sanei_scsi_XXX comands
+ */
+SANE_Status
+sanei_epson_scsi_sense_handler (int scsi_fd, u_char * result, void *arg)
+{
+  /* to get rid of warnings */
+  scsi_fd = scsi_fd;
+  arg = arg;
+
+  if (result[0] && result[0] != 0x70)
+  {
+    log_data ("SCSI sense code = 0x%02x", result[0]);
+    return SANE_STATUS_IO_ERROR;
+  }
+  else
+  {
+    return SANE_STATUS_GOOD;
+  }
+}
+
+/*
+ *
+ *
+ */
+SANE_Status
+sanei_epson_scsi_inquiry (int fd, int page_code, void *buf, size_t * buf_size)
+{
+  u_char cmd[6];
+  int status;
+
+  memset (cmd, 0, 6);
+  cmd[0] = INQUIRY_COMMAND;
+  cmd[2] = page_code;
+  cmd[4] = *buf_size > 255 ? 255 : *buf_size;
+  status = sanei_scsi_cmd (fd, cmd, sizeof cmd, buf, buf_size);
+
+  return status;
+}
+
+/*
+ *
+ *
+ */
+int
+sanei_epson_scsi_read (int fd, void *buf, size_t buf_size,
+		       SANE_Status * status)
+{
+  u_char cmd[6];
+
+  memset (cmd, 0, 6);
+  cmd[0] = READ_6_COMMAND;
+  cmd[2] = buf_size >> 16;
+  cmd[3] = buf_size >> 8;
+  cmd[4] = buf_size;
+
+  if (SANE_STATUS_GOOD ==
+      (*status = sanei_scsi_cmd (fd, cmd, sizeof (cmd), buf, &buf_size)))
+    return buf_size;
+
+  return 0;
+}
+
+/*
+ *
+ *
+ */
+int
+sanei_epson_scsi_write (int fd, const void *buf, size_t buf_size,
+			SANE_Status * status)
+{
+  u_char *cmd;
+
+  cmd = t_alloca (8 + buf_size, u_char);
+  memset (cmd, 0, 8);
+  cmd[0] = WRITE_6_COMMAND;
+  cmd[2] = buf_size >> 16;
+  cmd[3] = buf_size >> 8;
+  cmd[4] = buf_size;
+  memcpy (cmd + 8, buf, buf_size);
+
+  if (SANE_STATUS_GOOD ==
+      (*status = sanei_scsi_cmd2 (fd, cmd, 6, cmd + 8, buf_size, NULL, NULL)))
+    return buf_size;
+
+  return 0;
+}