Split helpers for child processes

Moves several functions out of providers/krb5 hierarchy into a separate
module so it can be shared by the ldap child.

1 files changed, 60 insertions, 0 deletions

diff --git a/server/providers/child_common.h b/server/providers/child_common.h
new file mode 100644
index 000000000..75cb3a6fc
--- /dev/null
+++ b/server/providers/child_common.h
@@ -0,0 +1,60 @@
+/*
+    SSSD
+
+    Common helper functions to be used in child processes
+
+    Authors:
+        Sumit Bose   <sbose@redhat.com>
+
+    Copyright (C) 2009 Red Hat
+
+    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/>.
+*/
+
+#ifndef __CHILD_COMMON_H__
+#define __CHILD_COMMON_H__
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <tevent.h>
+
+#define IN_BUF_SIZE         512
+#define MAX_CHILD_MSG_SIZE  255
+
+struct response {
+    size_t max_size;
+    size_t size;
+    uint8_t *buf;
+};
+
+uint8_t *copy_buffer_and_add_zero(TALLOC_CTX *mem_ctx,
+                                  const uint8_t *src, size_t len);
+
+/* Async communication with the child process via a pipe */
+struct read_pipe_state;
+
+struct tevent_req *read_pipe_send(TALLOC_CTX *mem_ctx,
+                                  struct tevent_context *ev, int fd);
+
+int read_pipe_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+                   uint8_t **buf, ssize_t *len);
+
+/* The pipes to communicate with the child must be nonblocking */
+void fd_nonblocking(int fd);
+
+void child_sig_handler(struct tevent_context *ev,
+                       struct tevent_signal *sige, int signum,
+                       int count, void *__siginfo, void *pvt);
+
+#endif /* __CHILD_COMMON_H__ */