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 ckFilter(arg,type,name) \
62 /* printf("filtering %s\n", name) ;*/ \
64 croak("recursion detected in %s", name) ; \
65 db->filtering = TRUE ; \
66 save_defsv = newSVsv(DEFSV) ; \
67 sv_setsv(DEFSV, arg) ; \
69 (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \
70 sv_setsv(arg, DEFSV) ; \
71 sv_setsv(DEFSV, save_defsv) ; \
72 SvREFCNT_dec(save_defsv) ; \
73 db->filtering = FALSE ; \
74 /*printf("end of filtering %s\n", name) ;*/ \
78 #define odbm_FETCH(db,key) fetch(key)
79 #define odbm_STORE(db,key,value,flags) store(key,value)
80 #define odbm_DELETE(db,key) delete(key)
81 #define odbm_FIRSTKEY(db) firstkey()
82 #define odbm_NEXTKEY(db,key) nextkey(key)
84 #define MY_CXT_KEY "ODBM_File::_guts" XS_VERSION
92 #define dbmrefcnt (MY_CXT.x_dbmrefcnt)
98 MODULE = ODBM_File PACKAGE = ODBM_File PREFIX = odbm_
106 odbm_TIEHASH(dbtype, filename, flags, mode)
118 croak("Old dbm can only open one database");
119 New(0, tmpbuf, strlen(filename) + 5, char);
121 sprintf(tmpbuf,"%s.dir",filename);
122 if (stat(tmpbuf, &PL_statbuf) < 0) {
123 if (flags & O_CREAT) {
124 if (mode < 0 || close(creat(tmpbuf,mode)) < 0)
125 croak("ODBM_File: Can't create %s", filename);
126 sprintf(tmpbuf,"%s.pag",filename);
127 if (close(creat(tmpbuf,mode)) < 0)
128 croak("ODBM_File: Can't create %s", filename);
131 croak("ODBM_FILE: Can't open %s", filename);
133 dbp = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0);
134 RETVAL = (ODBM_File)safemalloc(sizeof(ODBM_File_type)) ;
135 Zero(RETVAL, 1, ODBM_File_type) ;
137 ST(0) = sv_mortalcopy(&PL_sv_undef);
138 sv_setptrobj(ST(0), RETVAL, dbtype);
157 odbm_STORE(db, key, value, flags = DBM_REPLACE)
164 if (RETVAL < 0 && errno == EPERM)
165 croak("No write permission to odbm file");
166 croak("odbm store returned %d, errno %d, key \"%s\"",
167 RETVAL,errno,key.dptr);
180 odbm_NEXTKEY(db, key)
185 #define setFilter(type) \
188 RETVAL = sv_mortalcopy(db->type) ; \
190 if (db->type && (code == &PL_sv_undef)) { \
191 SvREFCNT_dec(db->type) ; \
192 db->type = Nullsv ; \
196 sv_setsv(db->type, code) ; \
198 db->type = newSVsv(code) ; \
205 filter_fetch_key(db, code)
208 SV * RETVAL = &PL_sv_undef ;
210 setFilter(filter_fetch_key) ;
213 filter_store_key(db, code)
216 SV * RETVAL = &PL_sv_undef ;
218 setFilter(filter_store_key) ;
221 filter_fetch_value(db, code)
224 SV * RETVAL = &PL_sv_undef ;
226 setFilter(filter_fetch_value) ;
229 filter_store_value(db, code)
232 SV * RETVAL = &PL_sv_undef ;
234 setFilter(filter_store_value) ;