From c1c696460b74fa3dd381f3903ec0281f6f1865a9 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Mon, 25 Oct 2004 01:29:31 +0000
Subject: r3174: added pvfs_is_open() to allow us to check for open files on
 unlink. We now pass BASE-UNLINK. (This used to be commit
 f23a2f8538bda8f6790e86c93ee22436388b2975)

---
 source4/ntvfs/common/opendb.c     | 20 ++++++++++++++++++++
 source4/ntvfs/posix/pvfs_open.c   | 17 +++++++++++++++++
 source4/ntvfs/posix/pvfs_unlink.c |  4 ++++
 3 files changed, 41 insertions(+)

diff --git a/source4/ntvfs/common/opendb.c b/source4/ntvfs/common/opendb.c
index 3def23f190..5c962fbad0 100644
--- a/source4/ntvfs/common/opendb.c
+++ b/source4/ntvfs/common/opendb.c
@@ -335,3 +335,23 @@ NTSTATUS odb_set_create_options(struct odb_lock *lck,
 
 	return status;
 }
+
+
+/*
+  determine if a file is open
+*/
+BOOL odb_is_open(struct odb_context *odb, DATA_BLOB *key)
+{
+	TDB_DATA dbuf;
+	TDB_DATA kbuf;
+
+	kbuf.dptr = key->data;
+	kbuf.dsize = key->length;
+
+	dbuf = tdb_fetch(odb->w->tdb, kbuf);
+	if (dbuf.dptr == NULL) {
+		return False;
+	}
+	free(dbuf.dptr);
+	return True;
+}
diff --git a/source4/ntvfs/posix/pvfs_open.c b/source4/ntvfs/posix/pvfs_open.c
index e587ebbf95..7f06626706 100644
--- a/source4/ntvfs/posix/pvfs_open.c
+++ b/source4/ntvfs/posix/pvfs_open.c
@@ -703,3 +703,20 @@ NTSTATUS pvfs_change_create_options(struct pvfs_state *pvfs,
 
 	return status;
 }
+
+
+/*
+  determine if a file is open - used to prevent some operations on open files
+*/
+BOOL pvfs_is_open(struct pvfs_state *pvfs, struct pvfs_filename *name)
+{
+	NTSTATUS status;
+	DATA_BLOB key;
+
+	status = pvfs_locking_key(name, name, &key);
+	if (!NT_STATUS_IS_OK(status)) {
+		return False;
+	}
+
+	return odb_is_open(pvfs->odb_context, &key);
+}
diff --git a/source4/ntvfs/posix/pvfs_unlink.c b/source4/ntvfs/posix/pvfs_unlink.c
index 0f4ff8b148..d5e25b5622 100644
--- a/source4/ntvfs/posix/pvfs_unlink.c
+++ b/source4/ntvfs/posix/pvfs_unlink.c
@@ -80,6 +80,10 @@ NTSTATUS pvfs_unlink(struct ntvfs_module_context *ntvfs,
 		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 	}
 
+	if (pvfs_is_open(pvfs, name)) {
+		return NT_STATUS_SHARING_VIOLATION;
+	}
+
 	dir = talloc_p(req, struct pvfs_dir);
 	if (dir == NULL) {
 		return NT_STATUS_NO_MEMORY;
-- 
cgit