Revert "add kubernetes pause"

This reverts commit 9d2b8d2791 since
catatonit's new pause functionality can replace the `pause` binary
entirely.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Makefile

@@ -186,10 +186,6 @@ ifdef HOMEBREW_PREFIX
 endif
 endif
 
-# For building pause/pause.c
-GCC ?= gcc
-PAUSE_CFLAGS = -Os -static -Wall -Werror -DVERSION=v$(RELEASE_VERSION)
-
 ###
 ### Primary entry-point targets
 ###
@@ -201,7 +197,7 @@ default: all
 all: binaries docs
 
 .PHONY: binaries
-binaries: podman podman-remote rootlessport pause
+binaries: podman podman-remote rootlessport ## Build podman, podman-remote and rootlessport binaries
 
 # Extract text following double-# for targets, as their description for
 # the `help` target.  Otherwise These simple-substitutions are resolved
@@ -379,12 +375,6 @@ bin/rootlessport: .gopathok $(SOURCES) go.mod go.sum
 .PHONY: rootlessport
 rootlessport: bin/rootlessport
 
-bin/pause: pause/pause.c
-	$(GCC) $(PAUSE_CFLAGS) pause/pause.c -o bin/pause
-
-.PHONY: pause
-pause: bin/pause
-
 ###
 ### Secondary binary-build targets
 ###
@@ -744,7 +734,7 @@ install.remote-nobuild:
 install.remote: podman-remote install.remote-nobuild
 
 .PHONY: install.bin-nobuild
-install.bin-nobuild: install.pause
+install.bin-nobuild:
 	install ${SELINUXOPT} -d -m 755 $(DESTDIR)$(BINDIR)
 	install ${SELINUXOPT} -m 755 bin/podman $(DESTDIR)$(BINDIR)/podman
 	test -z "${SELINUXOPT}" || chcon --verbose --reference=$(DESTDIR)$(BINDIR)/podman bin/podman
@@ -798,10 +788,8 @@ install.docker-docs-nobuild:
 .PHONY: install.docker-docs
 install.docker-docs: docker-docs install.docker-docs-nobuild
 
-.PHONY: install.pause
+.PHONY: install.docker-full
-install.pause: pause
+install.docker-full: install.docker install.docker-docs
-	install ${SELINUXOPT} -m 755 -d $(DESTDIR)$(LIBEXECPODMAN)/pause
-	install ${SELINUXOPT} -m 755 bin/pause $(DESTDIR)$(LIBEXECPODMAN)/pause/pause
 
 .PHONY: install.systemd
 ifneq (,$(findstring systemd,$(BUILDTAGS)))
@@ -832,9 +820,6 @@ else
 install.systemd:
 endif
 
-.PHONY: install.pause
-install.pause: pause
-
 .PHONY: install.tools
 install.tools: .install.goimports .install.gitvalidation .install.md2man .install.ginkgo .install.golangci-lint .install.bats ## Install needed tools
 

contrib/spec/podman.spec.in

@@ -529,7 +529,6 @@ export GOPATH=%{buildroot}/%{gopath}:$(pwd)/vendor:%{gopath}
 %{_usr}/lib/tmpfiles.d/podman.conf
 %dir %{_libexecdir}/%{name}
 %{_libexecdir}/%{name}/rootlessport
-%{_libexecdir}/%{name}/pause/pause
 
 %if 0%{?with_devel}
 %files -n libpod-devel -f devel.file-list

pause/pause.c

@@ -1,69 +0,0 @@
-/*
-Copyright 2016 The Kubernetes Authors.
-Copyright 2021 The Podman Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#define STRINGIFY(x) #x
-#define VERSION_STRING(x) STRINGIFY(x)
-
-#ifndef VERSION
-#define VERSION HEAD
-#endif
-
-static void sigdown(int signo) {
-  psignal(signo, "Shutting down, got signal");
-  exit(0);
-}
-
-static void sigreap(int signo) {
-  while (waitpid(-1, NULL, WNOHANG) > 0)
-    ;
-}
-
-int main(int argc, char **argv) {
-  int i;
-  for (i = 1; i < argc; ++i) {
-    if (!strcasecmp(argv[i], "-v")) {
-      printf("pause.c %s\n", VERSION_STRING(VERSION));
-      return 0;
-    }
-  }
-
-  if (getpid() != 1)
-    /* Not an error because pause sees use outside of infra containers. */
-    fprintf(stderr, "Warning: pause should be the first process\n");
-
-  if (sigaction(SIGINT, &(struct sigaction){.sa_handler = sigdown}, NULL) < 0)
-    return 1;
-  if (sigaction(SIGTERM, &(struct sigaction){.sa_handler = sigdown}, NULL) < 0)
-    return 2;
-  if (sigaction(SIGCHLD, &(struct sigaction){.sa_handler = sigreap,
-                                             .sa_flags = SA_NOCLDSTOP},
-                NULL) < 0)
-    return 3;
-
-  for (;;)
-    pause();
-  fprintf(stderr, "Error: infinite loop terminated\n");
-  return 42;
-}