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Second phase of REUSE compliance and header reformat

/*
 *   $Id: locktab.h,v 1.3 2025/03/09 19:50:47 snw Exp $
 *    lock table data structures
 *
 *  
 *   Author: Serena Willis <snw@coherent-logic.com>
 *    Copyright (C) 1998 MUG Deutschland
 *    Copyright (C) 2021, 2025 Coherent Logic Development LLC
 *
 *
 *   This file is part of FreeM.
 *
 *   FreeM is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Affero Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   FreeM is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Affero Public License for more details.
 *
 *   You should have received a copy of the GNU Affero Public License
 *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
 *
 *   $Log: locktab.h,v $
 *   Revision 1.3  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
 **/

#if !defined(__FREEM_LOCKTAB_H)
# define __FREEM_LOCKTAB_H

#define NREF_MAXLEN 800

typedef struct locktab_ent_t {

    char namespace[255];
    char nref[NREF_MAXLEN];

    int tp_level;
    pid_t owner_job;
    int ct;
    
    struct locktab_ent_t *next;
    
} locktab_ent_t;

/* function prototypes */
extern void locktab_init(void);
extern void lock(char *lockarg, long time_out, char type);
extern void locktab_increment(char *key, long lck_timeout, short old_lock);
extern void locktab_decrement(char *key, long lck_timeout);
extern void locktab_unlock_all(void);
extern locktab_ent_t *locktab_find(char *key);
extern locktab_ent_t *locktab_insert(char *key);
extern int locktab_count(char *key);
extern unsigned long locktab_pages(void);
extern unsigned long locktab_bytes(void);
extern short locktab_get_sem(void);
extern void locktab_release_sem(void);
extern void locktab_dump(void);

#endif