diff --git a/cr-restore.c b/cr-restore.c
index ce4ff4729..e96f741d4 100644
--- a/cr-restore.c
+++ b/cr-restore.c
@@ -49,6 +49,9 @@
 #include "inotify.h"
 #include "pstree.h"
 
+#include "protobuf.h"
+#include "protobuf/sa.pb-c.h"
+
 static struct pstree_item *me;
 
 static int restore_task_with_children(void *);
@@ -194,7 +197,7 @@ static int prepare_sigactions(int pid)
 {
 	rt_sigaction_t act, oact;
 	int fd_sigact;
-	struct sa_entry e;
+	SaEntry *e;
 	int sig;
 	int ret = -1;
 
@@ -206,14 +209,16 @@ static int prepare_sigactions(int pid)
 		if (sig == SIGKILL || sig == SIGSTOP)
 			continue;
 
-		ret = read_img(fd_sigact, &e);
+		ret = pb_read(fd_sigact, &e, sa_entry);
 		if (ret < 0)
 			break;
 
-		ASSIGN_TYPED(act.rt_sa_handler, e.sigaction);
-		ASSIGN_TYPED(act.rt_sa_flags, e.flags);
-		ASSIGN_TYPED(act.rt_sa_restorer, e.restorer);
-		ASSIGN_TYPED(act.rt_sa_mask.sig[0], e.mask);
+		ASSIGN_TYPED(act.rt_sa_handler, e->sigaction);
+		ASSIGN_TYPED(act.rt_sa_flags, e->flags);
+		ASSIGN_TYPED(act.rt_sa_restorer, e->restorer);
+		ASSIGN_TYPED(act.rt_sa_mask.sig[0], e->mask);
+
+		sa_entry__free_unpacked(e, NULL);
 
 		if (sig == SIGCHLD) {
 			sigchld_act = act;
diff --git a/cr-show.c b/cr-show.c
index 8bdfd31f3..f058aff42 100644
--- a/cr-show.c
+++ b/cr-show.c
@@ -35,6 +35,7 @@
 #include "protobuf/pstree.pb-c.h"
 #include "protobuf/pipe.pb-c.h"
 #include "protobuf/pipe-data.pb-c.h"
+#include "protobuf/sa.pb-c.h"
 
 #define DEF_PAGES_PER_LINE	6
 
@@ -359,22 +360,23 @@ out:
 
 void show_sigacts(int fd_sigacts, struct cr_options *o)
 {
-	struct sa_entry e;
+	SaEntry *e;
 
 	pr_img_head(CR_FD_SIGACT);
 
 	while (1) {
 		int ret;
 
-		ret = read_img_eof(fd_sigacts, &e);
+		ret = pb_read_eof(fd_sigacts, &e, sa_entry);
 		if (ret <= 0)
 			goto out;
 		pr_msg("sigaction: 0x%016lx mask: 0x%08lx "
 		       "flags: 0x%016lx restorer: 0x%016lx\n",
-		       (long)e.sigaction,
-		       (long)e.mask,
-		       (long)e.flags,
-		       (long)e.restorer);
+		       (long)e->sigaction,
+		       (long)e->mask,
+		       (long)e->flags,
+		       (long)e->restorer);
+		sa_entry__free_unpacked(e, NULL);
 	}
 
 out:
diff --git a/include/image.h b/include/image.h
index 36d4f6c9c..2e6a06e90 100644
--- a/include/image.h
+++ b/include/image.h
@@ -201,13 +201,6 @@ struct page_entry {
 	u8	data[PAGE_IMAGE_SIZE];
 } __packed;
 
-struct sa_entry {
-	u64		sigaction;
-	u64		flags;
-	u64		restorer;
-	u64		mask;
-} __packed;
-
 struct itimer_entry {
 	u64		isec;
 	u64		iusec;
diff --git a/parasite-syscall.c b/parasite-syscall.c
index 9838f1527..5900d85da 100644
--- a/parasite-syscall.c
+++ b/parasite-syscall.c
@@ -12,6 +12,9 @@
 #include "parasite.h"
 #include "crtools.h"
 
+#include "protobuf.h"
+#include "protobuf/sa.pb-c.h"
+
 #include <string.h>
 #include <stdlib.h>
 
@@ -431,7 +434,7 @@ int parasite_dump_sigacts_seized(struct parasite_ctl *ctl, struct cr_fdset *cr_f
 {
 	struct parasite_dump_sa_args args;
 	int ret, i, fd;
-	struct sa_entry se;
+	SaEntry se = SA_ENTRY__INIT;
 
 	ret = parasite_execute(PARASITE_CMD_DUMP_SIGACTS, ctl, &args, sizeof(args));
 	if (ret < 0)
@@ -448,7 +451,7 @@ int parasite_dump_sigacts_seized(struct parasite_ctl *ctl, struct cr_fdset *cr_f
 		ASSIGN_TYPED(se.restorer, args.sas[i].rt_sa_restorer);
 		ASSIGN_TYPED(se.mask, args.sas[i].rt_sa_mask.sig[0]);
 
-		if (write_img(fd, &se) < 0)
+		if (pb_write(fd, &se, sa_entry) < 0)
 			return -1;
 	}
 
diff --git a/protobuf/Makefile b/protobuf/Makefile
index 4b7c5202d..e18f93ac1 100644
--- a/protobuf/Makefile
+++ b/protobuf/Makefile
@@ -36,6 +36,7 @@ PROTO_FILES	+= tcp-stream.proto
 PROTO_FILES	+= sk-packet.proto
 PROTO_FILES	+= mnt.proto
 PROTO_FILES	+= pipe-data.proto
+PROTO_FILES	+= sa.proto
 
 HDRS	:= $(patsubst %.proto,%.pb-c.h,$(PROTO_FILES))
 SRCS	:= $(patsubst %.proto,%.pb-c.c,$(PROTO_FILES))
diff --git a/protobuf/sa.proto b/protobuf/sa.proto
new file mode 100644
index 000000000..d5e5a49c2
--- /dev/null
+++ b/protobuf/sa.proto
@@ -0,0 +1,6 @@
+message sa_entry {
+	required uint64	sigaction	= 1;
+	required uint64	flags		= 2;
+	required uint64	restorer	= 3;
+	required uint64	mask		= 4;
+}