Add "file_walk_table" to do stuff with all open files

2 files changed, 26 insertions, 0 deletions

diff --git a/source3/include/proto.h b/source3/include/proto.h
index 81fc1c061f3..5b5f9098e02 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -6285,6 +6285,10 @@ void file_close_pid(uint16 smbpid, int vuid);
 void file_init(void);
 void file_close_user(int vuid);
 void file_dump_open_table(void);
+struct files_struct *file_walk_table(
+	struct files_struct *(*fn)(struct files_struct *fsp,
+				   void *private_data),
+	void *private_data);
 files_struct *file_find_fd(int fd);
 files_struct *file_find_dif(struct file_id id, unsigned long gen_id);
 files_struct *file_find_fsp(files_struct *orig_fsp);
diff --git a/source3/smbd/files.c b/source3/smbd/files.c
index d2ea520146c..0e6dd7e457e 100644
--- a/source3/smbd/files.c
+++ b/source3/smbd/files.c
@@ -204,6 +204,28 @@ void file_close_user(int vuid)
 	}
 }
 
+/*
+ * Walk the files table until "fn" returns non-NULL
+ */
+
+struct files_struct *file_walk_table(
+	struct files_struct *(*fn)(struct files_struct *fsp,
+				   void *private_data),
+	void *private_data)
+{
+	struct files_struct *fsp, *next;
+
+	for (fsp = Files; fsp; fsp = next) {
+		struct files_struct *ret;
+		next = fsp->next;
+		ret = fn(fsp, private_data);
+		if (ret != NULL) {
+			return ret;
+		}
+	}
+	return NULL;
+}
+
 /****************************************************************************
  Debug to enumerate all open files in the smbd.
 ****************************************************************************/