[CRIU] [PATCH] lib: add inherit_fd

[Ruslan Kuprieiev]

It is already present in CLI and RPC, so libcriu should reflect it too.

Signed-off-by: Ruslan Kuprieiev <rkuprieiev at cloudlinux.com>
---
 lib/c/criu.c | 41 +++++++++++++++++++++++++++++++++++++++++
 lib/c/criu.h |  2 ++
 2 files changed, 43 insertions(+)

diff --git a/lib/c/criu.c b/lib/c/criu.c
index 5c65d9f..a7df66a 100644
--- a/lib/c/criu.c
+++ b/lib/c/criu.c
@@ -799,6 +799,47 @@ int criu_add_irmap_path(char *path)
 	return criu_local_add_irmap_path(global_opts, path);
 }
 
+int criu_local_add_inherit_fd(criu_opts *opts, int fd, char *key)
+{
+	int nr;
+	InheritFd **a, *f;
+
+	/* Inheriting is only supported with swrk mode */
+	if (opts->service_comm != CRIU_COMM_BIN)
+		return -1;
+
+	f = malloc(sizeof(*f));
+	if (!f)
+		goto er;
+	inherit_fd__init(f);
+
+	f->fd = fd;
+	f->key = strdup(key);
+	if (!f->key)
+		goto er_f;
+
+	nr = opts->rpc->n_inherit_fd + 1;
+	a = realloc(opts->rpc->inherit_fd, nr * sizeof(f));
+	if (!a)
+		goto err_k;
+
+	a[nr - 1] = f;
+	opts->rpc->inherit_fd = a;
+	opts->rpc->n_inherit_fd = nr;
+	return 0;
+err_k:
+	free(f->key);
+er_f:
+	free(f);
+er:
+	return -ENOMEM;
+}
+
+int criu_add_inherit_fd(int fd, char *key)
+{
+	return criu_local_add_inherit_fd(global_opts, fd, key);
+}
+
 static CriuResp *recv_resp(int socket_fd)
 {
 	unsigned char *buf = NULL;
diff --git a/lib/c/criu.h b/lib/c/criu.h
index 5755782..5785044 100644
--- a/lib/c/criu.h
+++ b/lib/c/criu.h
@@ -92,6 +92,7 @@ int criu_add_enable_fs(char *fs);
 int criu_add_skip_mnt(char *mnt);
 void criu_set_ghost_limit(unsigned int limit);
 int criu_add_irmap_path(char *path);
+int criu_add_inherit_fd(int fd, char *key);
 
 /*
  * The criu_notify_arg_t na argument is an opaque
@@ -200,6 +201,7 @@ int criu_local_add_irmap_path(criu_opts *opts, char *path);
 int criu_local_add_cg_props(criu_opts *opts, char *stream);
 int criu_local_add_cg_props_file(criu_opts *opts, char *path);
 int criu_local_add_cg_dump_controller(criu_opts *opts, char *name);
+int criu_local_add_inherit_fd(criu_opts *opts, int fd, char *key);
 
 void criu_local_set_notify_cb(criu_opts *opts, int (*cb)(char *action, criu_notify_arg_t na));
 
-- 
2.5.5