123 lines
2.6 KiB
Plaintext
123 lines
2.6 KiB
Plaintext
#include "EXTERN.h"
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#include "perl.h"
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#include "XSUB.h"
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#ifdef NULL
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#undef NULL /* XXX Why? */
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#endif
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#ifdef I_DBM
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# include <dbm.h>
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#else
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# ifdef I_RPCSVC_DBM
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# include <rpcsvc/dbm.h>
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# endif
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#endif
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#ifdef DBM_BUG_DUPLICATE_FREE
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/*
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* DBM on at least Ultrix and HPUX call dbmclose() from dbminit(),
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* resulting in duplicate free() because dbmclose() does *not*
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* check if it has already been called for this DBM.
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* If some malloc/free calls have been done between dbmclose() and
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* the next dbminit(), the memory might be used for something else when
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* it is freed.
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* Verified to work on ultrix4.3. Probably will work on HP/UX.
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* Set DBM_BUG_DUPLICATE_FREE in the extension hint file.
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*/
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/* Close the previous dbm, and fail to open a new dbm */
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#define dbmclose() ((void) dbminit("/tmp/x/y/z/z/y"))
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#endif
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#include <fcntl.h>
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typedef void* ODBM_File;
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#define odbm_FETCH(db,key) fetch(key)
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#define odbm_STORE(db,key,value,flags) store(key,value)
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#define odbm_DELETE(db,key) delete(key)
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#define odbm_FIRSTKEY(db) firstkey()
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#define odbm_NEXTKEY(db,key) nextkey(key)
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static int dbmrefcnt;
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#ifndef DBM_REPLACE
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#define DBM_REPLACE 0
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#endif
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MODULE = ODBM_File PACKAGE = ODBM_File PREFIX = odbm_
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#ifndef NULL
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# define NULL 0
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#endif
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ODBM_File
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odbm_TIEHASH(dbtype, filename, flags, mode)
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char * dbtype
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char * filename
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int flags
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int mode
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CODE:
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{
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char *tmpbuf;
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if (dbmrefcnt++)
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croak("Old dbm can only open one database");
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New(0, tmpbuf, strlen(filename) + 5, char);
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SAVEFREEPV(tmpbuf);
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sprintf(tmpbuf,"%s.dir",filename);
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if (stat(tmpbuf, &PL_statbuf) < 0) {
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if (flags & O_CREAT) {
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if (mode < 0 || close(creat(tmpbuf,mode)) < 0)
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croak("ODBM_File: Can't create %s", filename);
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sprintf(tmpbuf,"%s.pag",filename);
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if (close(creat(tmpbuf,mode)) < 0)
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croak("ODBM_File: Can't create %s", filename);
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}
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else
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croak("ODBM_FILE: Can't open %s", filename);
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}
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RETVAL = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0);
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ST(0) = sv_mortalcopy(&PL_sv_undef);
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sv_setptrobj(ST(0), RETVAL, dbtype);
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}
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void
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DESTROY(db)
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ODBM_File db
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CODE:
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dbmrefcnt--;
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dbmclose();
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datum
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odbm_FETCH(db, key)
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ODBM_File db
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datum key
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int
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odbm_STORE(db, key, value, flags = DBM_REPLACE)
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ODBM_File db
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datum key
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datum value
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int flags
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CLEANUP:
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if (RETVAL) {
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if (RETVAL < 0 && errno == EPERM)
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croak("No write permission to odbm file");
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croak("odbm store returned %d, errno %d, key \"%s\"",
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RETVAL,errno,key.dptr);
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}
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int
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odbm_DELETE(db, key)
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ODBM_File db
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datum key
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datum
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odbm_FIRSTKEY(db)
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ODBM_File db
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datum
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odbm_NEXTKEY(db, key)
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ODBM_File db
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datum key
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