Allow saving to/restoring from a file without shell redirection

Mathieu Bridon suggested that in some environments where there is no
access to a full shell with input/output redirection, it'd be useful
to read from/write to directly a file (bugzilla #788).

The patch adds the new "-file" option to specify a filename to print
into when listing/saving sets or read from when restoring sets.

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/session.c b/lib/session.c
index 6700ea1..3803bfa 100644
--- a/lib/session.c
+++ b/lib/session.c
@@ -1941,6 +1941,19 @@ cleanup:
 }
 
 /**
+ * ipset_session_outfn - set session output printing function
+ *
+ * Set the session printing function.
+ *
+ */
+int
+ipset_session_outfn(struct ipset_session *session, ipset_outfn outfn)
+{
+	session->outfn = outfn ? outfn : printf;
+	return 0;
+}
+
+/**
  * ipset_session_init - initialize an ipset session
  *
  * Initialize an ipset session by allocating a session structure