From: Theodore Tso <tytso@mit.edu>
Date: Sat, 2 Feb 1991 01:34:20 +0000 (+0000)
Subject: Added kdb_db_destroy() function
X-Git-Tag: krb5-1.0-alpha4~325
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=71461cc249f1ad760260bf790a05abb1011f4499;p=krb5.git

Added kdb_db_destroy() function

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@1647 dc483132-0cff-0310-8789-dd5450dbe970
---

diff --git a/src/lib/kdb/kdb_dbm.c b/src/lib/kdb/kdb_dbm.c
index ff448b3c3..291670220 100644
--- a/src/lib/kdb/kdb_dbm.c
+++ b/src/lib/kdb/kdb_dbm.c
@@ -20,6 +20,7 @@ static char rcsid_krb_dbm_c[] =
 #include <krb5/kdb_dbm.h>
 #include <krb5/ext-proto.h>
 #include <krb5/sysincl.h>
+#include <stdio.h>
 
 #define KRB5_DBM_MAX_RETRY 5
 
@@ -644,6 +645,66 @@ char *db_name;
     return retval;
 }
 
+/*
+ * Destroy the database.  Zero's out all of the files, just to be sure.
+ */
+krb5_error_code
+destroy_file_suffix(dbname, suffix)
+	char	*dbname;
+	char	*suffix;
+{
+	char	*filename;
+	struct stat	statb;
+	int		nb,fd,i;
+	char		buf[BUFSIZ];
+
+	filename = gen_dbsuffix(dbname, suffix);
+	if (stat(filename, &statb)) {
+		free(filename);
+		if (errno == ENOENT)
+			return(0);
+		else
+			return(errno);
+	}
+	if ((fd = open(filename, O_RDWR, 0)) < 0) {
+		free(filename);
+		return(errno);
+	}
+	i = 0;
+	while (i < statb.st_size) {
+		nb = write(fd, buf, BUFSIZ);
+		if (nb < 0) {
+			free(filename);
+			return(errno);
+		}
+		i += nb;
+	}
+	fsync(fd);
+	close(fd);
+
+	if (unlink(filename)) {
+		free(filename);
+		return(errno);
+	}
+	free(filename);
+	return(0);
+}
+
+krb5_error_code
+krb5_dbm_db_destroy(dbname)
+	char	*dbname;
+{
+	krb5_error_code	retval;
+
+	if (retval = destroy_file_suffix(dbname, ".pag"))
+		return(retval);
+	if (retval = destroy_file_suffix(dbname, ".dir"))
+		return(retval);
+	if (retval = destroy_file_suffix(dbname, ".ok"))
+		return(retval);
+	return(0);
+}
+
 /*
  * "Atomically" rename the database in a way that locks out read
  * access in the middle of the rename.