compel: plugins -- Add prologue.h from compel, drop hand-made prologue_init_args

Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

compel/arch/x86/plugins/include/asm/prologue.h

+#ifndef __ASM_PROLOGUE_H__
+#define __ASM_PROLOGUE_H__
+
+#ifndef __ASSEMBLY__
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <errno.h>
+
+#define sys_recv(sockfd, ubuf, size, flags)	\
+	sys_recvfrom(sockfd, ubuf, size, flags, NULL, NULL)
+
+typedef struct prologue_init_args {
+	struct sockaddr_un	ctl_sock_addr;
+	unsigned int		ctl_sock_addr_len;
+
+	unsigned int		arg_s;
+	void			*arg_p;
+
+	void			*sigframe;
+} prologue_init_args_t;
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Reserve enough space for sigframe.
+ *
+ * FIXME It is rather should be taken from sigframe header.
+ */
+#define PROLOGUE_SGFRAME_SIZE	4096
+
+#define PROLOGUE_INIT_ARGS_SIZE	1024
+
+#endif /* __ASM_PROLOGUE_H__ */

compel/plugins/include/uapi/plugin-std.h

@@ -4,12 +4,4 @@
 #include "uapi/plugins.h"
 #include "uapi/std/syscall.h"
 
-struct prologue_init_args {
-	struct sockaddr		*ctl_sock_addr;
-	socklen_t		ctl_sock_addr_len;
-
-	unsigned int		arg_s;
-	void			*arg_p;
-};
-
 #endif /* COMPEL_PLUGIN_STD_STD_H__ */

compel/plugins/std/std.c

@@ -4,6 +4,8 @@
 #include "uapi/plugins.h"
 #include "uapi/plugin-std.h"
 
+#include "asm/prologue.h"
+
 extern int main(void *arg_p, unsigned int arg_s);
 
 static struct prologue_init_args *init_args;