6 /* If using the DB3 emulation, ENTER is defined both
7 * by DB3 and Perl. We drop the Perl definition now.
8 * See also INSTALL section on DB3.
9 * -- Stanislav Brabec <utx@penguin.cz> */
14 # include <rpcsvc/dbm.h>
18 #ifndef HAS_DBMINIT_PROTO
19 int dbminit(char* filename);
21 datum fetch(datum key);
22 int store(datum key, datum dat);
23 int delete(datum key);
25 datum nextkey(datum key);
28 #ifdef DBM_BUG_DUPLICATE_FREE
30 * DBM on at least Ultrix and HPUX call dbmclose() from dbminit(),
31 * resulting in duplicate free() because dbmclose() does *not*
32 * check if it has already been called for this DBM.
33 * If some malloc/free calls have been done between dbmclose() and
34 * the next dbminit(), the memory might be used for something else when
36 * Verified to work on ultrix4.3. Probably will work on HP/UX.
37 * Set DBM_BUG_DUPLICATE_FREE in the extension hint file.
39 /* Close the previous dbm, and fail to open a new dbm */
40 #define dbmclose() ((void) dbminit("/tmp/x/y/z/z/y"))
47 SV * filter_fetch_key ;
48 SV * filter_store_key ;
49 SV * filter_fetch_value ;
50 SV * filter_store_value ;
54 typedef ODBM_File_type * ODBM_File ;
55 typedef datum datum_key ;
56 typedef datum datum_value ;
58 #define ckFilter(arg,type,name) \
61 /* printf("filtering %s\n", name) ;*/ \
63 croak("recursion detected in %s", name) ; \
64 db->filtering = TRUE ; \
65 save_defsv = newSVsv(DEFSV) ; \
66 sv_setsv(DEFSV, arg) ; \
68 (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \
69 sv_setsv(arg, DEFSV) ; \
70 sv_setsv(DEFSV, save_defsv) ; \
71 SvREFCNT_dec(save_defsv) ; \
72 db->filtering = FALSE ; \
73 /*printf("end of filtering %s\n", name) ;*/ \
77 #define odbm_FETCH(db,key) fetch(key)
78 #define odbm_STORE(db,key,value,flags) store(key,value)
79 #define odbm_DELETE(db,key) delete(key)
80 #define odbm_FIRSTKEY(db) firstkey()
81 #define odbm_NEXTKEY(db,key) nextkey(key)
89 MODULE = ODBM_File PACKAGE = ODBM_File PREFIX = odbm_
92 odbm_TIEHASH(dbtype, filename, flags, mode)
102 croak("Old dbm can only open one database");
103 New(0, tmpbuf, strlen(filename) + 5, char);
105 sprintf(tmpbuf,"%s.dir",filename);
106 if (stat(tmpbuf, &PL_statbuf) < 0) {
107 if (flags & O_CREAT) {
108 if (mode < 0 || close(creat(tmpbuf,mode)) < 0)
109 croak("ODBM_File: Can't create %s", filename);
110 sprintf(tmpbuf,"%s.pag",filename);
111 if (close(creat(tmpbuf,mode)) < 0)
112 croak("ODBM_File: Can't create %s", filename);
115 croak("ODBM_FILE: Can't open %s", filename);
117 dbp = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0);
118 RETVAL = (ODBM_File)safemalloc(sizeof(ODBM_File_type)) ;
119 Zero(RETVAL, 1, ODBM_File_type) ;
121 ST(0) = sv_mortalcopy(&PL_sv_undef);
122 sv_setptrobj(ST(0), RETVAL, dbtype);
139 odbm_STORE(db, key, value, flags = DBM_REPLACE)
146 if (RETVAL < 0 && errno == EPERM)
147 croak("No write permission to odbm file");
148 croak("odbm store returned %d, errno %d, key \"%s\"",
149 RETVAL,errno,key.dptr);
162 odbm_NEXTKEY(db, key)
167 #define setFilter(type) \
170 RETVAL = sv_mortalcopy(db->type) ; \
172 if (db->type && (code == &PL_sv_undef)) { \
173 SvREFCNT_dec(db->type) ; \
174 db->type = Nullsv ; \
178 sv_setsv(db->type, code) ; \
180 db->type = newSVsv(code) ; \
187 filter_fetch_key(db, code)
190 SV * RETVAL = &PL_sv_undef ;
192 setFilter(filter_fetch_key) ;
195 filter_store_key(db, code)
198 SV * RETVAL = &PL_sv_undef ;
200 setFilter(filter_store_key) ;
203 filter_fetch_value(db, code)
206 SV * RETVAL = &PL_sv_undef ;
208 setFilter(filter_fetch_value) ;
211 filter_store_value(db, code)
214 SV * RETVAL = &PL_sv_undef ;
216 setFilter(filter_store_value) ;