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_key_copy ;
57 typedef datum datum_value ;
59 #define odbm_FETCH(db,key) fetch(key)
60 #define odbm_STORE(db,key,value,flags) store(key,value)
61 #define odbm_DELETE(db,key) delete(key)
62 #define odbm_FIRSTKEY(db) firstkey()
63 #define odbm_NEXTKEY(db,key) nextkey(key)
65 #define MY_CXT_KEY "ODBM_File::_guts" XS_VERSION
73 #define dbmrefcnt (MY_CXT.x_dbmrefcnt)
79 MODULE = ODBM_File PACKAGE = ODBM_File PREFIX = odbm_
87 odbm_TIEHASH(dbtype, filename, flags, mode)
99 croak("Old dbm can only open one database");
100 New(0, tmpbuf, strlen(filename) + 5, char);
102 sprintf(tmpbuf,"%s.dir",filename);
103 if (stat(tmpbuf, &PL_statbuf) < 0) {
104 if (flags & O_CREAT) {
105 if (mode < 0 || close(creat(tmpbuf,mode)) < 0)
106 croak("ODBM_File: Can't create %s", filename);
107 sprintf(tmpbuf,"%s.pag",filename);
108 if (close(creat(tmpbuf,mode)) < 0)
109 croak("ODBM_File: Can't create %s", filename);
112 croak("ODBM_FILE: Can't open %s", filename);
114 dbp = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0);
115 RETVAL = (ODBM_File)safemalloc(sizeof(ODBM_File_type)) ;
116 Zero(RETVAL, 1, ODBM_File_type) ;
118 ST(0) = sv_mortalcopy(&PL_sv_undef);
119 sv_setptrobj(ST(0), RETVAL, dbtype);
138 odbm_STORE(db, key, value, flags = DBM_REPLACE)
145 if (RETVAL < 0 && errno == EPERM)
146 croak("No write permission to odbm file");
147 croak("odbm store returned %d, errno %d, key \"%s\"",
148 RETVAL,errno,key.dptr);
161 odbm_NEXTKEY(db, key)
166 #define setFilter(type) \
169 RETVAL = sv_mortalcopy(db->type) ; \
171 if (db->type && (code == &PL_sv_undef)) { \
172 SvREFCNT_dec(db->type) ; \
173 db->type = Nullsv ; \
177 sv_setsv(db->type, code) ; \
179 db->type = newSVsv(code) ; \
186 filter_fetch_key(db, code)
189 SV * RETVAL = &PL_sv_undef ;
191 DBM_setFilter(db->filter_fetch_key, code) ;
194 filter_store_key(db, code)
197 SV * RETVAL = &PL_sv_undef ;
199 DBM_setFilter(db->filter_store_key, code) ;
202 filter_fetch_value(db, code)
205 SV * RETVAL = &PL_sv_undef ;
207 DBM_setFilter(db->filter_fetch_value, code) ;
210 filter_store_value(db, code)
213 SV * RETVAL = &PL_sv_undef ;
215 DBM_setFilter(db->filter_store_value, code) ;