Add a driver return code parameter to mmc_get_get_disc_erasable.

include/cdio/mmc.h

@@ -540,11 +540,13 @@ mmc_audio_read_subchannel (CdIo_t *p_cdio,
   /**
      Detects if a disc (CD or DVD) is erasable or not.
      @param p_user_data the CD object to be acted upon.
+     @param i_status on return will be set indicate whether the operation
+     was a success (DRIVER_OP_SUCCESS) or if not to some other value.
      @return true if the disc is detected as erasable (rewritable), false
      otherwise.
   */
-    bool
-    mmc_get_disc_erasable( const CdIo_t *p_cdio );
+  bool mmc_get_disc_erasable( const CdIo_t *p_cdio, 
+                              driver_return_code_t *i_status );
 
   /**
     Get the lsn of the end of the CD
@@ -620,7 +622,8 @@ mmc_audio_read_subchannel (CdIo_t *p_cdio,
     @return DRIVER_OP_SUCCESS (0) if we got the status.
     return codes are the same as driver_return_code_t
    */
-  int mmc_get_event_status(const CdIo_t *p_cdio, uint8_t out_buf[2]);
+  driver_return_code_t mmc_get_event_status(const CdIo_t *p_cdio, 
+                                            uint8_t out_buf[2]);
 
   /**
     Find out if media tray is open or closed.

lib/driver/mmc.c

@@ -683,21 +683,22 @@ mmc_get_cmd_len(uint8_t scsi_cmd)
 /**
   Detects if a disc (CD or DVD) is erasable or not.
   @param p_user_data the CD object to be acted upon.
+  @param i_status on return will be set indicate whether the operation
+  was a success (DRIVER_OP_SUCCESS) or if not to some other value.
   @return true if the disc is detected as erasable (rewritable), false
 otherwise.
  */
 bool
-mmc_get_disc_erasable( const CdIo_t *p_cdio ) {
+    mmc_get_disc_erasable( const CdIo_t *p_cdio, driver_return_code_t *i_status ) {
     mmc_cdb_t cdb = {{0, }};
     uint8_t buf[42] = { 0, };
-    int i_status;
 
     CDIO_MMC_SET_COMMAND (cdb.field, CDIO_MMC_GPCMD_READ_DISC_INFO);
     CDIO_MMC_SET_READ_LENGTH8 (cdb.field, sizeof(buf));
     
-    i_status = mmc_run_cmd (p_cdio, 0, &cdb, SCSI_MMC_DATA_READ, 
+    *i_status = mmc_run_cmd (p_cdio, 0, &cdb, SCSI_MMC_DATA_READ, 
                             sizeof(buf), &buf);
-    if (i_status == 0) {
+    if (*i_status == 0) {
         if (buf[2] & 0x10)
             return true;
         else
@@ -960,7 +961,8 @@ mmc_get_hwinfo ( const CdIo_t *p_cdio,
   @return DRIVER_OP_SUCCESS (0) if we got the status.
   return codes are the same as driver_return_code_t
 */
-int mmc_get_event_status(const CdIo_t *p_cdio, uint8_t out_buf[2])
+driver_return_code_t 
+mmc_get_event_status(const CdIo_t *p_cdio, uint8_t out_buf[2])
 {
   mmc_cdb_t cdb = {{0, }};
   uint8_t buf[8] = { 0, };
@@ -981,12 +983,11 @@ int mmc_get_event_status(const CdIo_t *p_cdio, uint8_t out_buf[2])
                                     mmc_get_cmd_len(cdb.field[0]), 
                                     &cdb, SCSI_MMC_DATA_READ, 
                                     sizeof(buf), buf);
-  if(i_status == 0) {
+  if(i_status == DRIVER_OP_SUCCESS) {
     out_buf[0] = buf[4];
     out_buf[1] = buf[5];
-    return DRIVER_OP_SUCCESS;
   }
-  return DRIVER_OP_ERROR;
+  return i_status;
 }
 
 /**

test/driver/mmc.c

@@ -45,7 +45,8 @@ static int tmmc_eject_load_cycle(CdIo_t *p_cdio, int flag);
 
 static int tmmc_eject_test_load(CdIo_t *p_cdio, int flag);
 
-static void tmmc_get_disc_erasable(const CdIo_t *p_cdio, const char *psz_source,
+static driver_return_code_t tmmc_get_disc_erasable(const CdIo_t *p_cdio, 
+						   const char *psz_source,
 						   int verbose);
 
 static int tmmc_handle_outcome(CdIo_t *p_cdio, int i_status,
@@ -78,12 +79,14 @@ static int tmmc_test(char *drive_path, int flag);
 /* ------------------------- Helper functions ---------------------------- */
 
 
-static void
+static driver_return_code_t
 tmmc_get_disc_erasable(const CdIo_t *p_cdio, const char *psz_source,
 		       int verbose) 
 {
-    bool b_erasable = mmc_get_disc_erasable(p_cdio);
+    driver_return_code_t drc;
+    bool b_erasable = mmc_get_disc_erasable(p_cdio, &drc);
     printf("disk is %serasable.\n", b_erasable ? "" : "not ");
+    return drc;
 }
 
 
@@ -743,7 +746,10 @@ main(int argc, const char *argv[])
   char **ppsz_drives=NULL;
   const char *psz_source = NULL;
   int ret;
+  int exitrc = 0;
   bool b_verbose = (argc > 1);
+  driver_return_code_t drc;
+  
 
   cdio_loglevel_default = b_verbose ? CDIO_LOG_DEBUG : CDIO_LOG_INFO;
 
@@ -769,7 +775,11 @@ main(int argc, const char *argv[])
       exit(1);
     }
 
-    tmmc_get_disc_erasable(p_cdio, psz_source, b_verbose);
+    drc = tmmc_get_disc_erasable(p_cdio, psz_source, b_verbose);
+    if (DRIVER_OP_SUCCESS != drc) {
+	printf("Got status %d back from get_disc_erasable(%s)\n",
+	       drc, psz_source);
+    }
 	
     if ( psz_have_mmc 
 	 && 0 == strncmp("true", psz_have_mmc, sizeof("true"))
@@ -797,7 +807,7 @@ main(int argc, const char *argv[])
 
   cdio_free_device_list(ppsz_drives);
 
-  return 0;
+  return exitrc;
 }