From: Andrew Tridgell <tridge@samba.org>
Date: Mon, 26 May 2008 04:59:58 +0000 (+1000)
Subject: allow larger streams using the TDB backend
X-Git-Tag: samba-4.0.0alpha4~24^2~43^2~4
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8c0d756eb887477da867e069dbde3a7ad98d4ae0;p=thirdparty%2Fsamba.git

allow larger streams using the TDB backend
---

diff --git a/source/librpc/idl/xattr.idl b/source/librpc/idl/xattr.idl
index 2010d51ce10..520341e6aaf 100644
--- a/source/librpc/idl/xattr.idl
+++ b/source/librpc/idl/xattr.idl
@@ -86,7 +86,8 @@ interface xattr
 	/* stream data is stored in attributes with the given prefix */
 	const char *XATTR_DOSSTREAM_PREFIX = "user.DosStream.";
 
-	const int XATTR_MAX_STREAM_SIZE = 0x4000;
+	const int XATTR_MAX_STREAM_SIZE     = 0x4000;
+	const int XATTR_MAX_STREAM_SIZE_TDB = 0x100000;
 
 	typedef struct {
 		uint32     flags;
diff --git a/source/ntvfs/posix/pvfs_streams.c b/source/ntvfs/posix/pvfs_streams.c
index 3cd9952fd5b..30d7ce24772 100644
--- a/source/ntvfs/posix/pvfs_streams.c
+++ b/source/ntvfs/posix/pvfs_streams.c
@@ -276,9 +276,12 @@ ssize_t pvfs_stream_write(struct pvfs_state *pvfs,
 	if (count == 0) {
 		return 0;
 	}
-	if (offset > XATTR_MAX_STREAM_SIZE) {
-		errno = ENOSPC;
-		return -1;
+
+	if (count+offset > XATTR_MAX_STREAM_SIZE) {
+		if (!pvfs->ea_db || count+offset > XATTR_MAX_STREAM_SIZE_TDB) {
+			errno = ENOSPC;
+			return -1;
+		}
 	}
 
 	/* we have to load the existing stream, then modify, then save */
@@ -332,7 +335,9 @@ NTSTATUS pvfs_stream_truncate(struct pvfs_state *pvfs,
 	DATA_BLOB blob;
 
 	if (length > XATTR_MAX_STREAM_SIZE) {
-		return NT_STATUS_DISK_FULL;
+		if (!pvfs->ea_db || length > XATTR_MAX_STREAM_SIZE_TDB) {
+			return NT_STATUS_DISK_FULL;
+		}
 	}
 
 	/* we have to load the existing stream, then modify, then save */