New bit1 with API call Xorriso_change_is_pending() issues a note if return is 0 and indev and outdev point to different drives

xorriso/base_obj.c

@@ -238,6 +238,10 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
  m->indev_off_adr[0]= 0;
  m->isofs_st_in= 0;
  m->volset_change_pending= 0;
+ m->commit_attempts= 0;
+ m->print_size_attempts= 0;
+ m->write_session_counter= 0;
+ m->print_size_counter= 0;
  m->no_volset_present= 0;
  m->in_sector_map= NULL;
  m->check_media_default= NULL;

xorriso/iso_img.c

@@ -995,12 +995,32 @@ int Xorriso_get_volume(struct XorrisO *xorriso, IsoImage **volume,
 
 
 /* @param flag bit0= do not return 1 on volset_change_pending != 1
+               bit1= issue NOTE if return is 0,
+                     indev and outdev point to different drives,
+                     and no write run or size run has happened
 */
 int Xorriso_change_is_pending(struct XorrisO *xorriso, int flag)
 {
+ int ret;
+
  if(flag & 1)
-   return(xorriso->volset_change_pending == 1);
- return(!!xorriso->volset_change_pending);
+   ret= (xorriso->volset_change_pending == 1);
+ else
+   ret= !!xorriso->volset_change_pending;
+
+ if((flag & 2) && xorriso->volset_change_pending == 0 &&
+     xorriso->commit_attempts <= 0 &&
+     xorriso->print_size_attempts <= 0 &&
+     xorriso->write_session_counter <= 0 &&
+     xorriso->print_size_counter <= 0) {
+   if(xorriso->indev[0] != 0 && xorriso->outdev[0] != 0 &&
+      strcmp(xorriso->indev, xorriso->outdev) != 0) {
+     Xorriso_msgs_submit(xorriso, 0,
+              "-indev and -outdev differ. But no pending image modifications.",
+                         0, "NOTE", 0);
+   }
+ }
+ return(ret);
 }
 
 

xorriso/opts_a_c.c

@@ -2343,6 +2343,7 @@ int Xorriso_option_commit(struct XorrisO *xorriso, int flag)
  int ret;
  char eternal_problem_status_text_mem[80];
 
+ xorriso->commit_attempts++;
  if(!Xorriso_change_is_pending(xorriso, 0)) {
    sprintf(xorriso->info_text, "-commit: No image modifications pending");
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);

xorriso/opts_p_z.c

@@ -335,6 +335,7 @@ int Xorriso_option_print_size(struct XorrisO *xorriso, int flag)
 {
  int ret, fd;
 
+ xorriso->print_size_attempts++;
  if(!Xorriso_change_is_pending(xorriso, 0)) {
    sprintf(xorriso->info_text,"-print_size: No image modifications pending");
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);

xorriso/write_run.c

@@ -1488,6 +1488,8 @@ int Xorriso_write_session(struct XorrisO *xorriso, int flag)
      Xorriso_set_image_severities(xorriso, 2);
    if(flag&1) /* reset queue severity */
      Xorriso_set_image_severities(xorriso, 0);
+   if(flag & 1)
+     xorriso->print_size_counter++;
    goto cancel_iso;
  }
 
@@ -1571,6 +1573,7 @@ int Xorriso_write_session(struct XorrisO *xorriso, int flag)
  sprintf(xorriso->info_text, "Writing to %s completed successfully.\n\n",
          Text_shellsafe(xorriso->outdev,sfe,0));
  Xorriso_info(xorriso, 0);
+ xorriso->write_session_counter++;
  ret= 1;
 ex:;
  xorriso->run_state= 0; /* Indicate that burning has ended */

xorriso/xorriso.h

@@ -214,9 +214,13 @@ int Xorriso_startup_libraries(struct XorrisO *xorriso, int flag);
 
 /* Inquire whether option -commit would make sense.
    @param xorriso The context object to inquire.
-   @param flag    @since 0.6.6
-                  bit0= do not return 1 if -as mkisofs -print-size was
+   @param flag    bit0= do not return 1 if -as mkisofs -print-size was
                         performed on the current image.
+                        @since 0.6.6
+                  bit1= issue NOTE if return is 0, 
+                        indev and outdev point to different drives,
+                        and no write run has happened
+                        @since 1.5.8
    @return        0= -commit would have nothing to do
                   1= a new image session would emerge at -commit
 */

xorriso/xorriso_private.h

@@ -357,6 +357,11 @@ struct XorrisO { /* the global context of xorriso */
                                3= change pending, but the attempt to write it
                                   failed
                              */
+ int commit_attempts;       /* For Xorriso_change_is_pending bit1 */
+ int print_size_attempts;   /* For Xorriso_change_is_pending bit1 */
+ int write_session_counter; /* For Xorriso_change_is_pending bit1 */
+ int print_size_counter;    /* For Xorriso_change_is_pending bit1 */
+
  int no_volset_present;     /* set to 1 on first failure */
 
  struct CheckmediajoB *check_media_default;

xorriso/xorriso_timestamp.h

@@ -1 +1 @@
-#define Xorriso_timestamP "2023.08.07.132608"
+#define Xorriso_timestamP "2023.08.08.114313"