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Annotation of freem/src/ssvn_lock.c, revision 1.1

1.1     ! snw         1: /*
        !             2:  *                            *
        !             3:  *                           * *
        !             4:  *                          *   *
        !             5:  *                     ***************
        !             6:  *                      * *       * *
        !             7:  *                       *  MUMPS  *
        !             8:  *                      * *       * *
        !             9:  *                     ***************
        !            10:  *                          *   *
        !            11:  *                           * *
        !            12:  *                            *
        !            13:  *
        !            14:  *   ssvn_lock.c
        !            15:  *    ^$LOCK ssv
        !            16:  *
        !            17:  *  
        !            18:  *   Author: Serena Willis <jpw@coherent-logic.com>
        !            19:  *    Copyright (C) 1998 MUG Deutschland
        !            20:  *    Copyright (C) 2020 Coherent Logic Development LLC
        !            21:  *
        !            22:  *
        !            23:  *   This file is part of FreeM.
        !            24:  *
        !            25:  *   FreeM is free software: you can redistribute it and/or modify
        !            26:  *   it under the terms of the GNU Affero Public License as published by
        !            27:  *   the Free Software Foundation, either version 3 of the License, or
        !            28:  *   (at your option) any later version.
        !            29:  *
        !            30:  *   FreeM is distributed in the hope that it will be useful,
        !            31:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            32:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            33:  *   GNU Affero Public License for more details.
        !            34:  *
        !            35:  *   You should have received a copy of the GNU Affero Public License
        !            36:  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
        !            37:  *
        !            38:  **/
        !            39: 
        !            40: #include <stdio.h>
        !            41: #include <stdlib.h>
        !            42: #include <string.h>
        !            43: 
        !            44: #include "mpsdef.h"
        !            45: #include "mref.h"
        !            46: 
        !            47: void ssvn_lock_add(char *key, pid_t owner_job, int count)
        !            48: {
        !            49:     register int i;
        !            50: 
        !            51:     char *t_buf;
        !            52:     char *k_buf;
        !            53:     char *d_buf;
        !            54:     freem_ref_t *r;
        !            55:     
        !            56:     t_buf = (char *) malloc (STRLEN * sizeof (char));
        !            57:     NULLPTRCHK(t_buf,"ssvn_lock_add");
        !            58:     
        !            59:     k_buf = (char *) malloc (STRLEN * sizeof (char));
        !            60:     NULLPTRCHK(k_buf,"ssvn_lock_add");
        !            61: 
        !            62:     d_buf = (char *) malloc (STRLEN * sizeof (char));
        !            63:     NULLPTRCHK(d_buf,"ssvn_lock_add");
        !            64:     
        !            65:     r = (freem_ref_t *) malloc (sizeof (freem_ref_t));
        !            66:     NULLPTRCHK(r,"ssvn_lock_add");
        !            67: 
        !            68:     mref_init (r, MREF_RT_GLOBAL, "");
        !            69:     internal_to_mref (r, key);
        !            70:     mref_to_external (r, t_buf);
        !            71: 
        !            72:     //printf ("key = '%s'\r\n", key);
        !            73:     //printf ("r = '%s'\r\n", t_buf);
        !            74:     
        !            75:     for (i = 0; i < strlen (t_buf); i++) {
        !            76: 
        !            77:         if (t_buf[i] == '\001') {
        !            78:             t_buf[i] = '\0';
        !            79:             break;
        !            80:         }
        !            81: 
        !            82:     }
        !            83:     
        !            84:     snprintf (k_buf, STRLEN - 1, "^$LOCK\202%s\201", t_buf);
        !            85:     snprintf (d_buf, STRLEN - 1, "%ld,%d\201\0", owner_job, count);
        !            86: 
        !            87:     symtab_shm (set_sym, k_buf, d_buf);
        !            88: 
        !            89:     free (t_buf);
        !            90:     free (k_buf);
        !            91:     free (d_buf);
        !            92:     free (r);
        !            93:     
        !            94: }
        !            95: 
        !            96: void ssvn_lock_remove(char *key)
        !            97: {
        !            98:     register int i;
        !            99: 
        !           100:     char *t_buf;
        !           101:     char *k_buf;
        !           102:     char *d_buf;
        !           103:     freem_ref_t *r;
        !           104:     
        !           105:     t_buf = (char *) malloc (STRLEN * sizeof (freem_ref_t));
        !           106:     NULLPTRCHK(t_buf,"ssvn_lock_add");
        !           107:     
        !           108:     k_buf = (char *) malloc (STRLEN * sizeof (freem_ref_t));
        !           109:     NULLPTRCHK(k_buf,"ssvn_lock_add");
        !           110: 
        !           111:     d_buf = (char *) malloc (STRLEN * sizeof (freem_ref_t));
        !           112:     NULLPTRCHK(d_buf,"ssvn_lock_add");
        !           113:     
        !           114:     r = (freem_ref_t *) malloc (sizeof (freem_ref_t));
        !           115:     NULLPTRCHK(r,"ssvn_lock_add");
        !           116: 
        !           117:     mref_init (r, MREF_RT_GLOBAL, "");
        !           118:     internal_to_mref (r, key);
        !           119:     mref_to_external (r, t_buf);
        !           120: 
        !           121:     for (i = 0; i < strlen (t_buf); i++) {
        !           122: 
        !           123:         if (t_buf[i] == '\001') {
        !           124:             t_buf[i] = '\0';
        !           125:             break;
        !           126:         }
        !           127: 
        !           128:     }
        !           129:     
        !           130:     snprintf (k_buf, STRLEN - 1, "^$LOCK\202%s\201", t_buf);
        !           131:     snprintf (d_buf, STRLEN - 1, " \201");
        !           132: 
        !           133:     symtab_shm (kill_sym, k_buf, d_buf);
        !           134:     
        !           135: }
        !           136: 
        !           137: void ssvn_lock(short action, char *key, char *data)
        !           138: {
        !           139: 
        !           140:     switch (action) {
        !           141: 
        !           142:         case set_sym:       
        !           143:         case kill_sym:
        !           144:             //TODO: remove lock            
        !           145:             merr_raise (M29);
        !           146:             return;
        !           147:             
        !           148:         default:
        !           149:             symtab_shm (action, key, data);
        !           150:             break;
        !           151: 
        !           152:     }
        !           153:     
        !           154:     return;
        !           155: }