1 files changed, 122 insertions, 0 deletions
diff --git a/contrib/perl5/ext/ODBM_File/ODBM_File.xs b/contrib/perl5/ext/ODBM_File/ODBM_File.xs
new file mode 100644
index 000000000000..892c038a9ced
--- /dev/null
+++ b/contrib/perl5/ext/ODBM_File/ODBM_File.xs
@@ -0,0 +1,122 @@
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
+
+#ifdef NULL
+#undef NULL  /* XXX Why? */
+#endif
+#ifdef I_DBM
+#  include <dbm.h>
+#else
+#  ifdef I_RPCSVC_DBM
+#    include <rpcsvc/dbm.h>
+#  endif
+#endif
+
+#ifdef DBM_BUG_DUPLICATE_FREE 
+/*
+ * DBM on at least Ultrix and HPUX call dbmclose() from dbminit(),
+ * resulting in duplicate free() because dbmclose() does *not*
+ * check if it has already been called for this DBM.
+ * If some malloc/free calls have been done between dbmclose() and
+ * the next dbminit(), the memory might be used for something else when
+ * it is freed.
+ * Verified to work on ultrix4.3.  Probably will work on HP/UX.
+ * Set DBM_BUG_DUPLICATE_FREE in the extension hint file.
+ */
+/* Close the previous dbm, and fail to open a new dbm */
+#define dbmclose()	((void) dbminit("/tmp/x/y/z/z/y"))
+#endif
+
+#include <fcntl.h>
+
+typedef void* ODBM_File;
+
+#define odbm_FETCH(db,key)			fetch(key)
+#define odbm_STORE(db,key,value,flags)		store(key,value)
+#define odbm_DELETE(db,key)			delete(key)
+#define odbm_FIRSTKEY(db)			firstkey()
+#define odbm_NEXTKEY(db,key)			nextkey(key)
+
+static int dbmrefcnt;
+
+#ifndef DBM_REPLACE
+#define DBM_REPLACE 0
+#endif
+
+MODULE = ODBM_File	PACKAGE = ODBM_File	PREFIX = odbm_
+
+#ifndef NULL
+#  define NULL 0
+#endif
+
+ODBM_File
+odbm_TIEHASH(dbtype, filename, flags, mode)
+	char *		dbtype
+	char *		filename
+	int		flags
+	int		mode
+	CODE:
+	{
+	    char *tmpbuf;
+	    if (dbmrefcnt++)
+		croak("Old dbm can only open one database");
+	    New(0, tmpbuf, strlen(filename) + 5, char);
+	    SAVEFREEPV(tmpbuf);
+	    sprintf(tmpbuf,"%s.dir",filename);
+	    if (stat(tmpbuf, &PL_statbuf) < 0) {
+		if (flags & O_CREAT) {
+		    if (mode < 0 || close(creat(tmpbuf,mode)) < 0)
+			croak("ODBM_File: Can't create %s", filename);
+		    sprintf(tmpbuf,"%s.pag",filename);
+		    if (close(creat(tmpbuf,mode)) < 0)
+			croak("ODBM_File: Can't create %s", filename);
+		}
+		else
+		    croak("ODBM_FILE: Can't open %s", filename);
+	    }
+	    RETVAL = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0);
+	    ST(0) = sv_mortalcopy(&PL_sv_undef);
+	    sv_setptrobj(ST(0), RETVAL, dbtype);
+	}
+
+void
+DESTROY(db)
+	ODBM_File	db
+	CODE:
+	dbmrefcnt--;
+	dbmclose();
+
+datum
+odbm_FETCH(db, key)
+	ODBM_File	db
+	datum		key
+
+int
+odbm_STORE(db, key, value, flags = DBM_REPLACE)
+	ODBM_File	db
+	datum		key
+	datum		value
+	int		flags
+    CLEANUP:
+	if (RETVAL) {
+	    if (RETVAL < 0 && errno == EPERM)
+		croak("No write permission to odbm file");
+	    croak("odbm store returned %d, errno %d, key \"%s\"",
+			RETVAL,errno,key.dptr);
+	}
+
+int
+odbm_DELETE(db, key)
+	ODBM_File	db
+	datum		key
+
+datum
+odbm_FIRSTKEY(db)
+	ODBM_File	db
+
+datum
+odbm_NEXTKEY(db, key)
+	ODBM_File	db
+	datum		key
+