--- freem/src/shmmgr.c	2025/05/12 14:26:15	1.16
+++ freem/src/shmmgr.c	2025/05/12 18:18:00	1.17
@@ -1,5 +1,5 @@
 /*
- *   $Id: shmmgr.c,v 1.16 2025/05/12 14:26:15 snw Exp $
+ *   $Id: shmmgr.c,v 1.17 2025/05/12 18:18:00 snw Exp $
  *    shared memory manager
  *
  *  
@@ -24,6 +24,9 @@
  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
  *
  *   $Log: shmmgr.c,v $
+ *   Revision 1.17  2025/05/12 18:18:00  snw
+ *   Further work on shared memory
+ *
  *   Revision 1.16  2025/05/12 14:26:15  snw
  *   Revert bad change in shared memory manager
  *
@@ -128,7 +131,7 @@ short shm_init(const size_t seg_size)
     NULLPTRCHK(shm_config,"shm_init");    
     
     /* figure out how many pages we can fit in the segment, accounting for header size */
-    shm_config->pgct = (seg_size / pg_size) - sizeof (shm_hdr_t);
+    shm_config->pgct = (seg_size - sizeof (shm_hdr_t)) / pg_size;
     
     /* how big will the alloc map be? */
     alloc_map_size = shm_config->pgct * sizeof (shm_page_t);
@@ -175,17 +178,11 @@ short shm_init(const size_t seg_size)
         daemon_chk = kill (shm_config->hdr->first_process, 0);
 
         if (daemon_chk == -1 && errno == ESRCH) {
-
             logprintf (FM_LOG_WARNING, "shm_init:  recovering from crashed daemon pid %ld", shm_config->hdr->first_process);
-
             first_process = TRUE;
-
             shm_daemon_init ();
-
         }
         else {
-        
-
             first_process = FALSE;
 
             semid_shm = semget (shm_sk, 1, 0);
@@ -193,10 +190,7 @@ short shm_init(const size_t seg_size)
                 logprintf (FM_LOG_FATAL, "shm_init:  could not attach to shared memory semaphore [%s]", strerror (errno));         
             }
             
-
             shm_config->buf = SHMALIGN(shm_config->dta + (sizeof (shm_hdr_t) * shm_config->pgct));
-
-        
         }
 
     }