--- freem/src/shmmgr.c	2025/03/09 19:50:47	1.4
+++ freem/src/shmmgr.c	2025/04/14 19:46:18	1.8
@@ -1,5 +1,5 @@
 /*
- *   $Id: shmmgr.c,v 1.4 2025/03/09 19:50:47 snw Exp $
+ *   $Id: shmmgr.c,v 1.8 2025/04/14 19:46:18 snw Exp $
  *    shared memory manager
  *
  *  
@@ -24,6 +24,18 @@
  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
  *
  *   $Log: shmmgr.c,v $
+ *   Revision 1.8  2025/04/14 19:46:18  snw
+ *   Add SHM_REMAP flag to shmat on FreeBSD
+ *
+ *   Revision 1.7  2025/04/09 19:52:02  snw
+ *   Eliminate as many warnings as possible while building with -Wall
+ *
+ *   Revision 1.6  2025/04/04 19:43:18  snw
+ *   Switch to using environment catalog to determine user and group for environment, and remove -u and -g flags from freem
+ *
+ *   Revision 1.5  2025/03/24 02:56:50  snw
+ *   Shared memory compatibility fixes for OS/2
+ *
  *   Revision 1.4  2025/03/09 19:50:47  snw
  *   Second phase of REUSE compliance and header reformat
  *
@@ -48,7 +60,7 @@
 #include <sys/ipc.h>
 #include <sys/sem.h>
 
-#if !defined(__OpenBSD__) && !defined(__APPLE__)
+#if !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(__OS2__)
 union semun {
     int              val;    /* Value for SETVAL */
     struct semid_ds *buf;    /* Buffer for IPC_STAT, IPC_SET */
@@ -70,10 +82,8 @@ shm_config_t *shm_config = (shm_config_t
 
 short shm_init(const size_t seg_size)
 {
-    union semun arg;
     size_t alloc_map_size;
     long pg_size;
-    register int i;
     key_t shm_sk;
 
     shm_sk = ftok (config_file, 5);    
@@ -92,7 +102,7 @@ short shm_init(const size_t seg_size)
     shm_config->key = ftok (config_file, 1);
     shm_config->pgsiz = pg_size;
     
-    shm_config->seg_id = shmget (shm_config->key, shm_config->segsiz, 0660 | IPC_CREAT);
+    shm_config->seg_id = shmget (shm_config->key, shm_config->segsiz, 0770 | IPC_CREAT);
     if (shm_config->seg_id == -1) {
         if (errno == 22) {
             fprintf (stderr, "shm_init:  cannot get shared memory segment of %ld bytes\r\n\r\n", (unsigned long) shm_config->segsiz);
@@ -162,8 +172,14 @@ short shm_init(const size_t seg_size)
                     fprintf (stderr, "shm_init:  detach failed during detach/reattach [shmdt error %s]\r\n", strerror (errno));
                     exit (1);
                 }
-                
+
+#if defined(__FreeBSD__)
+                shm_config->dta = shmat (shm_config->seg_id, new_addr, SHM_REMAP);
+#else                
                 shm_config->dta = shmat (shm_config->seg_id, new_addr, 0);
+#endif
+                
+                
 
                 if (shm_config->dta == (void *) -1) {
                     fprintf (stderr, "shm_init:  fatal error attaching shared memory segment [shmat error '%s']\r\n", strerror (errno));
@@ -194,7 +210,6 @@ short shm_init(const size_t seg_size)
 void shm_daemon_init(void)
 {
     union semun arg;
-    size_t alloc_map_size;
     key_t shm_sk;
     register int i;
 
@@ -470,7 +485,7 @@ void shm_dump(void)
     printf ("SHARED MEMORY CONFIGURATION\r\n");
     printf ("  pgsiz                   %ld\r\n", (unsigned long) shm_config->pgsiz);
     printf ("  pgct                    %d\r\n", shm_config->pgct);
-    printf ("  key                     %ld\r\n", shm_config->key);
+    printf ("  key                     %d\r\n", shm_config->key);
     printf ("  segid                   %d\r\n", shm_config->seg_id);
     printf ("  sizeof shm_page_t       %ld\r\n", (long) sizeof (shm_page_t));
     printf ("  segsiz                  %ld\r\n", (long) shm_config->segsiz);