Added all files

1 files changed, 157 insertions, 0 deletions

diff --git a/libglusterfs/src/gf-dirent.c b/libglusterfs/src/gf-dirent.c
new file mode 100644
index 00000000000..28d1ab42595
--- /dev/null
+++ b/libglusterfs/src/gf-dirent.c
@@ -0,0 +1,157 @@
+/*
+  Copyright (c) 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+  This file is part of GlusterFS.
+
+  GlusterFS is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include "compat.h"
+#include "xlator.h"
+#include "byte-order.h"
+
+
+struct gf_dirent_nb {
+	uint64_t    d_ino;
+	uint64_t    d_off;
+	uint32_t    d_len;
+	uint32_t    d_type;
+	char        d_name[0];
+} __attribute__((packed));
+
+
+int
+gf_dirent_nb_size (gf_dirent_t *entries)
+{
+	return (sizeof (struct gf_dirent_nb) + strlen (entries->d_name) + 1);
+}
+
+
+gf_dirent_t *
+gf_dirent_for_name (const char *name)
+{
+	gf_dirent_t *gf_dirent = NULL;
+
+	/* TODO: use mem-pool */
+	gf_dirent = CALLOC (gf_dirent_size (name), 1);
+	if (!gf_dirent)
+		return NULL;
+
+	INIT_LIST_HEAD (&gf_dirent->list);
+	strcpy (gf_dirent->d_name, name);
+
+	gf_dirent->d_off = 0;
+	gf_dirent->d_ino = -1;
+	gf_dirent->d_type = 0;
+	gf_dirent->d_len = strlen (name);
+
+	return gf_dirent;
+}
+
+
+void
+gf_dirent_free (gf_dirent_t *entries)
+{
+	gf_dirent_t *entry = NULL;
+	gf_dirent_t *tmp = NULL;
+
+	list_for_each_entry_safe (entry, tmp, &entries->list, list) {
+		list_del (&entry->list);
+		FREE (entry);
+	}
+}
+
+
+int
+gf_dirent_serialize (gf_dirent_t *entries, char *buf, size_t buf_size)
+{
+	struct gf_dirent_nb *entry_nb = NULL;
+	gf_dirent_t         *entry = NULL;
+	int                  size = 0;
+	int                  entry_size = 0;
+
+
+	list_for_each_entry (entry, &entries->list, list) {
+		entry_size = gf_dirent_nb_size (entry);
+
+		if (buf && (size + entry_size <= buf_size)) {
+			entry_nb = (void *) (buf + size);
+
+			entry_nb->d_ino  = hton64 (entry->d_ino);
+			entry_nb->d_off  = hton64 (entry->d_off);	
+			entry_nb->d_len  = hton32 (entry->d_len);
+			entry_nb->d_type = hton32 (entry->d_type);
+
+			strcpy (entry_nb->d_name, entry->d_name);
+		}
+		size += entry_size;
+	}
+
+	return size;
+}
+
+
+int
+gf_dirent_unserialize (gf_dirent_t *entries, const char *buf, size_t buf_size)
+{
+	struct gf_dirent_nb *entry_nb = NULL;
+	int                  remaining_size = 0;
+	int                  least_dirent_size = 0;
+	int                  count = 0;
+	gf_dirent_t         *entry = NULL;
+	int                  entry_strlen = 0;
+	int                  entry_len = 0;
+
+
+	remaining_size = buf_size;
+	least_dirent_size = (sizeof (struct gf_dirent_nb) + 2);
+
+	while (remaining_size >= least_dirent_size) {
+		entry_nb = (void *)(buf + (buf_size - remaining_size));
+
+		entry_strlen = strnlen (entry_nb->d_name, remaining_size);
+		if (entry_strlen == remaining_size) {
+			break;
+		}
+
+		entry_len = sizeof (gf_dirent_t) + entry_strlen + 1;
+		entry = CALLOC (1, entry_len);
+		if (!entry) {
+			break;
+		}
+
+		entry->d_ino  = ntoh64 (entry_nb->d_ino);
+		entry->d_off  = ntoh64 (entry_nb->d_off);
+		entry->d_len  = ntoh32 (entry_nb->d_len);
+		entry->d_type = ntoh32 (entry_nb->d_type);
+		strcpy (entry->d_name, entry_nb->d_name);
+
+		list_add_tail (&entry->list, &entries->list);
+
+		remaining_size -= (sizeof (*entry_nb) + entry_strlen + 1);
+		count++;
+	}
+
+	return count;
+}