Rename struct pvcursorstate_s to pvipccursorstate_s for clarity since it is only for IPC (#165).

src/include/pv-internal.h

@@ -60,7 +60,7 @@ extern "C" {
 /*
  * Structure for data shared between multiple "pv -c" instances.
  */
-struct pvcursorstate_s {
+struct pvipccursorstate_s {
 	int y_topmost;		/* terminal row of topmost "pv" instance */
 	bool tty_tostop_added;	/* whether any instance had to set TOSTOP on the terminal */
 };
@@ -340,7 +340,7 @@ struct pvstate_s {
 	struct pvipcstate_s {
 		char lock_file[PV_SIZEOF_CRS_LOCK_FILE];
 #ifdef HAVE_IPC
-		/*@keep@*/ /*@null@*/ struct pvcursorstate_s *shared; /* data shared between instances */
+		/*@keep@*/ /*@null@*/ struct pvipccursorstate_s *shared; /* data shared between instances */
 		int shmid;		 /* ID of our shared memory segment */
 		int pvcount;		 /* number of `pv' processes in total */
 		int pvmax;		 /* highest number of `pv's seen */

src/pv/cursor.c

@@ -315,7 +315,7 @@ static int pv_crs_ipcinit(pvstate_t state, char *ttyfile, int terminalfd)
 		return 1;
 	}
 
-	state->cursor.shmid = shmget(key, sizeof(struct pvcursorstate_s), 0600 | IPC_CREAT);
+	state->cursor.shmid = shmget(key, sizeof(struct pvipccursorstate_s), 0600 | IPC_CREAT);
 	if (state->cursor.shmid < 0) {
 		debug("%s: %s", "shmget failed", strerror(errno));
 		pv_crs_unlock(state, terminalfd);