freem/src/shmmgr.c - diff

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Diff for /freem/src/shmmgr.c between versions 1.3 and 1.8

version 1.3, 2025/03/09 15:20:18	version 1.8, 2025/04/14 19:46:18
Line 1	Line 1
/*	/*
* *	* $Id$
* * *
* * *
* ***************
* * * * *
* * MUMPS *
* * * * *
* ***************
* * *
* * *
* *
*
* shmmgr.c
* shared memory manager	* shared memory manager
*	*
*	*
* Author: Serena Willis <snw@coherent-logic.com>	* Author: Serena Willis <snw@coherent-logic.com>
* Copyright (C) 1998 MUG Deutschland	* Copyright (C) 1998 MUG Deutschland
* Copyright (C) 2020 Coherent Logic Development LLC	* Copyright (C) 2020, 2025 Coherent Logic Development LLC
*	*
*	*
* This file is part of FreeM.	* This file is part of FreeM.
Line 35	Line 23
* You should have received a copy of the GNU Affero Public License	* You should have received a copy of the GNU Affero Public License
* along with FreeM. If not, see <https://www.gnu.org/licenses/>.	* along with FreeM. If not, see <https://www.gnu.org/licenses/>.
*	*
	* $Log$
	* 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
	*
	*
	* SPDX-FileCopyrightText: (C) 2025 Coherent Logic Development LLC
	* SPDX-License-Identifier: AGPL-3.0-or-later
**/	**/

#include <stdlib.h>	#include <stdlib.h>
Line 53	Line 60
#include <sys/ipc.h>	#include <sys/ipc.h>
#include <sys/sem.h>	#include <sys/sem.h>

#if !defined(__OpenBSD__) && !defined(__APPLE__)	#if !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(__OS2__)
union semun {	union semun {
int val; /* Value for SETVAL */	int val; /* Value for SETVAL */
struct semid_ds buf; / Buffer for IPC_STAT, IPC_SET */	struct semid_ds buf; / Buffer for IPC_STAT, IPC_SET */
Line 75 shm_config_t *shm_config = (shm_config_t	Line 82 shm_config_t *shm_config = (shm_config_t

short shm_init(const size_t seg_size)	short shm_init(const size_t seg_size)
{	{
union semun arg;
size_t alloc_map_size;	size_t alloc_map_size;
long pg_size;	long pg_size;
register int i;
key_t shm_sk;	key_t shm_sk;

shm_sk = ftok (config_file, 5);	shm_sk = ftok (config_file, 5);
Line 97 short shm_init(const size_t seg_size)	Line 102 short shm_init(const size_t seg_size)
shm_config->key = ftok (config_file, 1);	shm_config->key = ftok (config_file, 1);
shm_config->pgsiz = pg_size;	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 (shm_config->seg_id == -1) {
if (errno == 22) {	if (errno == 22) {
fprintf (stderr, "shm_init: cannot get shared memory segment of %ld bytes\r\n\r\n", (unsigned long) shm_config->segsiz);	fprintf (stderr, "shm_init: cannot get shared memory segment of %ld bytes\r\n\r\n", (unsigned long) shm_config->segsiz);
Line 167 short shm_init(const size_t seg_size)	Line 172 short shm_init(const size_t seg_size)
fprintf (stderr, "shm_init: detach failed during detach/reattach [shmdt error %s]\r\n", strerror (errno));	fprintf (stderr, "shm_init: detach failed during detach/reattach [shmdt error %s]\r\n", strerror (errno));
exit (1);	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);	shm_config->dta = shmat (shm_config->seg_id, new_addr, 0);
	#endif



if (shm_config->dta == (void *) -1) {	if (shm_config->dta == (void *) -1) {
fprintf (stderr, "shm_init: fatal error attaching shared memory segment [shmat error '%s']\r\n", strerror (errno));	fprintf (stderr, "shm_init: fatal error attaching shared memory segment [shmat error '%s']\r\n", strerror (errno));
Line 199 short shm_init(const size_t seg_size)	Line 210 short shm_init(const size_t seg_size)
void shm_daemon_init(void)	void shm_daemon_init(void)
{	{
union semun arg;	union semun arg;
size_t alloc_map_size;
key_t shm_sk;	key_t shm_sk;
register int i;	register int i;

Line 475 void shm_dump(void)	Line 485 void shm_dump(void)
printf ("SHARED MEMORY CONFIGURATION\r\n");	printf ("SHARED MEMORY CONFIGURATION\r\n");
printf (" pgsiz %ld\r\n", (unsigned long) shm_config->pgsiz);	printf (" pgsiz %ld\r\n", (unsigned long) shm_config->pgsiz);
printf (" pgct %d\r\n", shm_config->pgct);	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 (" segid %d\r\n", shm_config->seg_id);
printf (" sizeof shm_page_t %ld\r\n", (long) sizeof (shm_page_t));	printf (" sizeof shm_page_t %ld\r\n", (long) sizeof (shm_page_t));
printf (" segsiz %ld\r\n", (long) shm_config->segsiz);	printf (" segsiz %ld\r\n", (long) shm_config->segsiz);

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