s4-ntvfs: Rename xattr_tdb.c to posix_eadb.c and make more generally useful

This is now a small library, to be called from ntvfs, python and
vfs_posix_eadb.  The rename makes it clear that this has a different
DB format to that used by vfs_xattr_tdb, and matches the posix:eadb
smb.conf parameter used to configure it.

Andrew Bartlett

1 files changed, 0 insertions, 256 deletions

diff --git a/source4/ntvfs/posix/xattr_tdb.c b/source4/ntvfs/posix/xattr_tdb.c
deleted file mode 100644
index 2a320ba7a6..0000000000
--- a/source4/ntvfs/posix/xattr_tdb.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-
-   POSIX NTVFS backend - xattr support using a tdb
-
-   Copyright (C) Andrew Tridgell 2004
-
-   This program 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.
-   
-   This program 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/>.
-*/
-
-#include "includes.h"
-#include "lib/tdb_wrap/tdb_wrap.h"
-#include "tdb_compat.h"
-#include "vfs_posix.h"
-
-#define XATTR_LIST_ATTR ".xattr_list"
-
-/*
-  we need to maintain a list of attributes on each file, so that unlink
-  can automatically clean them up
-*/
-static NTSTATUS xattr_tdb_add_list(struct tdb_wrap *ea_tdb, TALLOC_CTX *ctx, const char *attr_name,
-				   const char *fname, int fd)
-{
-	DATA_BLOB blob;
-	TALLOC_CTX *mem_ctx;
-	const char *s;
-	NTSTATUS status;
-	size_t len;
-
-	if (strcmp(attr_name, XATTR_LIST_ATTR) == 0) {
-		return NT_STATUS_OK;
-	}
-
-	mem_ctx = talloc_new(ctx);
-
-	status = pull_xattr_blob_tdb_raw(ea_tdb, mem_ctx, XATTR_LIST_ATTR,
-				     fname, fd, 100, &blob);
-	if (!NT_STATUS_IS_OK(status)) {
-		blob = data_blob(NULL, 0);
-	}
-
-	for (s=(const char *)blob.data; s < (const char *)(blob.data+blob.length); s += strlen(s) + 1) {
-		if (strcmp(attr_name, s) == 0) {
-			talloc_free(mem_ctx);
-			return NT_STATUS_OK;
-		}
-	}
-
-	len = strlen(attr_name) + 1;
-
-	blob.data = talloc_realloc(mem_ctx, blob.data, uint8_t, blob.length + len);
-	if (blob.data == NULL) {
-		talloc_free(mem_ctx);
-		return NT_STATUS_NO_MEMORY;		
-	}
-	memcpy(blob.data + blob.length, attr_name, len);
-	blob.length += len;
-
-	status = push_xattr_blob_tdb_raw(ea_tdb,ctx, XATTR_LIST_ATTR, fname, fd, &blob);
-	talloc_free(mem_ctx);
-
-	return status;
-}
-
-/*
-  form a key for using in the ea_tdb
-*/
-static NTSTATUS get_ea_tdb_key(TALLOC_CTX *mem_ctx,
-			      const char *attr_name,
-			      const char *fname, int fd, 
-			      TDB_DATA *key)
-{
-	struct stat st;
-	size_t len = strlen(attr_name);
-
-	if (fd == -1) {
-		if (stat(fname, &st) == -1) {
-			return NT_STATUS_NOT_FOUND;
-		}
-	} else {
-		if (fstat(fd, &st) == -1) {
-			return NT_STATUS_NOT_FOUND;
-		}
-	}
-
-	key->dptr = talloc_array(mem_ctx, uint8_t, 16 + len);
-	if (key->dptr == NULL) {
-		return NT_STATUS_NO_MEMORY;
-	}
-	key->dsize = 16 + len;
-
-	SBVAL(key->dptr, 0, st.st_dev);
-	SBVAL(key->dptr, 8, st.st_ino);
-	memcpy(key->dptr+16, attr_name, len);
-	
-	return NT_STATUS_OK;
-}
-
-
-
-/*
-  pull a xattr as a blob, using the ea_tdb_context tdb
-*/
-NTSTATUS pull_xattr_blob_tdb_raw(struct tdb_wrap *ea_tdb,
-			     TALLOC_CTX *mem_ctx,
-			     const char *attr_name,
-			     const char *fname,
-			     int fd,
-			     size_t estimated_size,
-			     DATA_BLOB *blob)
-{
-	TDB_DATA tkey, tdata;
-	NTSTATUS status;
-
-	status = get_ea_tdb_key(mem_ctx, attr_name, fname, fd, &tkey);
-	if (!NT_STATUS_IS_OK(status)) {
-		return status;
-	}
-
-	tdata = tdb_fetch_compat(ea_tdb->tdb, tkey);
-	if (tdata.dptr == NULL) {
-		return NT_STATUS_NOT_FOUND;
-	}
-
-	*blob = data_blob_talloc(mem_ctx, tdata.dptr, tdata.dsize);
-	free(tdata.dptr);
-	if (blob->data == NULL) {
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	return NT_STATUS_OK;	
-}
-
-NTSTATUS pull_xattr_blob_tdb(struct pvfs_state *pvfs,
-			     TALLOC_CTX *mem_ctx,
-			     const char *attr_name,
-			     const char *fname,
-			     int fd,
-			     size_t estimated_size,
-			     DATA_BLOB *blob)
-{
-	return pull_xattr_blob_tdb_raw(pvfs->ea_db,mem_ctx,attr_name,fname,fd,estimated_size,blob);
-}
-
-/*
-  push a xattr as a blob, using ea_tdb
-*/
-NTSTATUS push_xattr_blob_tdb_raw(struct tdb_wrap *ea_tdb,
-			     TALLOC_CTX *mem_ctx,
-			     const char *attr_name,
-			     const char *fname,
-			     int fd,
-			     const DATA_BLOB *blob)
-{
-	TDB_DATA tkey, tdata;
-	NTSTATUS status;
-
-	status = get_ea_tdb_key(mem_ctx, attr_name, fname, fd, &tkey);
-	if (!NT_STATUS_IS_OK(status)) {
-		return status;
-	}
-	
-	tdata.dptr = blob->data;
-	tdata.dsize = blob->length;
-
-	if (tdb_chainlock(ea_tdb->tdb, tkey) != 0) {
-		talloc_free(tkey.dptr);
-		return NT_STATUS_INTERNAL_DB_CORRUPTION;
-	}
-
-	status = xattr_tdb_add_list(ea_tdb,mem_ctx, attr_name, fname, fd);
-	if (!NT_STATUS_IS_OK(status)) {
-		goto done;
-	}
-
-	if (tdb_store(ea_tdb->tdb, tkey, tdata, TDB_REPLACE) != 0) {
-		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
-	}
-
-done:
-	tdb_chainunlock(ea_tdb->tdb, tkey);
-	talloc_free(tkey.dptr);
-	return status;	
-}
-NTSTATUS push_xattr_blob_tdb(struct pvfs_state *pvfs,
-			     const char *attr_name,
-			     const char *fname,
-			     int fd,
-			     const DATA_BLOB *blob)
-{
-	return push_xattr_blob_tdb_raw(pvfs->ea_db,pvfs,attr_name,fname,fd,blob);
-}
-
-
-/*
-  delete a xattr
-*/
-NTSTATUS delete_xattr_tdb(struct pvfs_state *pvfs, const char *attr_name, 
-			  const char *fname, int fd)
-{
-	TDB_DATA tkey;
-	NTSTATUS status;
-
-	status = get_ea_tdb_key(NULL, attr_name, fname, fd, &tkey);
-	if (!NT_STATUS_IS_OK(status)) {
-		return status;
-	}
-	
-	if (tdb_delete(pvfs->ea_db->tdb, tkey) != 0) {
-		talloc_free(tkey.dptr);
-		return NT_STATUS_INTERNAL_DB_CORRUPTION;
-	}
-
-	talloc_free(tkey.dptr);
-	return NT_STATUS_OK;	
-}
-
-
-
-/*
-  delete all xattrs for a file
-*/
-NTSTATUS unlink_xattr_tdb(struct pvfs_state *pvfs, const char *fname)
-{
-	TALLOC_CTX *mem_ctx = talloc_new(pvfs);
-	DATA_BLOB blob;
-	const char *s;
-	NTSTATUS status;
-
-	status = pull_xattr_blob_tdb(pvfs, mem_ctx, XATTR_LIST_ATTR,
-				     fname, -1, 100, &blob);
-	if (!NT_STATUS_IS_OK(status)) {
-		talloc_free(mem_ctx);
-		return NT_STATUS_OK;
-	}
-
-	for (s=(const char *)blob.data; s < (const char *)(blob.data+blob.length); s += strlen(s) + 1) {
-		delete_xattr_tdb(pvfs, s, fname, -1);
-	}
-
-	status = delete_xattr_tdb(pvfs, XATTR_LIST_ATTR, fname, -1);
-	talloc_free(mem_ctx);
-	return status;
-}