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compel: Add fds plugin (v2)

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This is just export by reasonable name of the existing
code, that sends and receives FDs via compel RPC socket.

v2:
 Rebase on recent criu-dev
 Fix parallel build

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Pavel Emelyanov 2017-03-06 21:38:17 +03:00 committed by Andrei Vagin
parent b502d7fd6b
commit 6794c8c2a9
4 changed files with 42 additions and 2 deletions
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7
Makefile.compel
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@ -22,7 +22,7 @@ compel-deps += compel/include/asm
compel-deps += $(COMPEL_VERSION_HEADER)
compel-deps += $(CONFIG_HEADER)
compel-deps += include/common/asm
compel-plugins += compel/plugins/std.built-in.o
compel-plugins += compel/plugins/std.built-in.o compel/plugins/fds.built-in.o
LIBCOMPEL_SO := libcompel.so
LIBCOMPEL_A := libcompel.a
@ -50,7 +50,10 @@ compel/plugins/%: $(compel-deps) .FORCE
compel/plugins/std.built-in.o: $(compel-deps) .FORCE
$(Q) $(MAKE) $(build)=compel/plugins $@
compel/plugins/shmem.built-in.o: $(compel-deps) .FORCE
compel/plugins/shmem.built-in.o: $(compel-deps) compel/plugins/std.built-in.o .FORCE
$(Q) $(MAKE) $(build)=compel/plugins $@
compel/plugins/fds.built-in.o: $(compel-deps) compel/plugins/std.built-in.o .FORCE
$(Q) $(MAKE) $(build)=compel/plugins $@
compel/compel: compel/built-in.o compel/$(LIBCOMPEL_A) | $(compel-deps)

5
compel/plugins/Makefile
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@ -48,6 +48,11 @@ std-obj-y += std/string.o
std-obj-y += std/infect.o
std-obj-y += ./$(PLUGIN_ARCH_DIR)/std/parasite-head.o
#
# FDS plugin
target += fds
fds-obj-y += fds/fds.o
ifeq ($(SRCARCH),x86)
std-obj-y += ./$(PLUGIN_ARCH_DIR)/std/memcpy.o
endif

25
compel/plugins/fds/fds.c Normal file
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@ -0,0 +1,25 @@
#include <errno.h>
#include "uapi/plugins.h"
#include "uapi/plugins/std.h"
#include <compel/plugins/std/infect.h>
#define pr_err(fmt, ...)
#include "common/compiler.h"
#include "common/bug.h"
#define __sys(foo) sys_##foo
#define __sys_err(ret) ret
#include "common/scm.h"
int fds_send_fd(int fd)
{
return send_fd(parasite_get_rpc_sock(), NULL, 0, fd);
}
int fds_recv_fd(void)
{
return recv_fd(parasite_get_rpc_sock());
}

7
compel/plugins/include/uapi/plugin-fds.h Normal file
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@ -0,0 +1,7 @@
#ifndef COMPEL_PLUGIN_STD_STD_H__
#define COMPEL_PLUGIN_STD_STD_H__
extern int fds_send_fd(int fd);
extern int fds_recv_fd(void);
#endif /* COMPEL_PLUGIN_STD_STD_H__ */