mirror of https://github.com/containers/podman.git
add kubernetes pause
Add the k8s pause binary to `pause/pause.c` and do the plumbing in the Makefile to install it in $libexec/podman/pause/pause. It is intended to replace the k8s pause image and hence the need for network connectivity when creating pods. [NO NEW TESTS NEEDED] since it will be tested in a following commit. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This commit is contained in:
Valentin Rothberg
parent
e86549b18d
commit
9d2b8d2791
23
Makefile
23
Makefile
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@ -185,6 +185,10 @@ ifdef HOMEBREW_PREFIX
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endif
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endif
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# For building pause/pause.c
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GCC ?= gcc
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PAUSE_CFLAGS = -Os -static -Wall -Werror -DVERSION=v$(RELEASE_VERSION)
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###
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### Primary entry-point targets
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###
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@ -196,7 +200,7 @@ default: all
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all: binaries docs
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.PHONY: binaries
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binaries: podman podman-remote rootlessport ## Build podman, podman-remote and rootlessport binaries
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binaries: podman podman-remote rootlessport pause
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# Extract text following double-# for targets, as their description for
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# the `help` target. Otherwise These simple-substitutions are resolved
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@ -374,6 +378,12 @@ bin/rootlessport: .gopathok $(SOURCES) go.mod go.sum
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.PHONY: rootlessport
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rootlessport: bin/rootlessport
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bin/pause: pause/pause.c
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$(GCC) $(PAUSE_CFLAGS) pause/pause.c -o bin/pause
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.PHONY: pause
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pause: bin/pause
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###
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### Secondary binary-build targets
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###
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@ -733,7 +743,7 @@ install.remote-nobuild:
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install.remote: podman-remote install.remote-nobuild
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.PHONY: install.bin-nobuild
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install.bin-nobuild:
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install.bin-nobuild: install.pause
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install ${SELINUXOPT} -d -m 755 $(DESTDIR)$(BINDIR)
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install ${SELINUXOPT} -m 755 bin/podman $(DESTDIR)$(BINDIR)/podman
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test -z "${SELINUXOPT}" || chcon --verbose --reference=$(DESTDIR)$(BINDIR)/podman bin/podman
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@ -787,8 +797,10 @@ install.docker-docs-nobuild:
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.PHONY: install.docker-docs
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install.docker-docs: docker-docs install.docker-docs-nobuild
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.PHONY: install.docker-full
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install.docker-full: install.docker install.docker-docs
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.PHONY: install.pause
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install.pause: pause
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install ${SELINUXOPT} -m 755 -d $(DESTDIR)$(LIBEXECPODMAN)/pause
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install ${SELINUXOPT} -m 755 bin/pause $(DESTDIR)$(LIBEXECPODMAN)/pause/pause
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.PHONY: install.systemd
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ifneq (,$(findstring systemd,$(BUILDTAGS)))
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@ -819,6 +831,9 @@ else
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install.systemd:
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endif
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.PHONY: install.pause
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install.pause: pause
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.PHONY: install.tools
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install.tools: .install.goimports .install.gitvalidation .install.md2man .install.ginkgo .install.golangci-lint .install.bats ## Install needed tools
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@ -528,6 +528,7 @@ export GOPATH=%{buildroot}/%{gopath}:$(pwd)/vendor:%{gopath}
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%{_usr}/lib/tmpfiles.d/podman.conf
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%dir %{_libexecdir}/%{name}
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%{_libexecdir}/%{name}/rootlessport
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%{_libexecdir}/%{name}/pause/pause
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%if 0%{?with_devel}
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%files -n libpod-devel -f devel.file-list
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@ -0,0 +1,69 @@
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/*
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Copyright 2016 The Kubernetes Authors.
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Copyright 2021 The Podman Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#define STRINGIFY(x) #x
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#define VERSION_STRING(x) STRINGIFY(x)
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#ifndef VERSION
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#define VERSION HEAD
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#endif
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static void sigdown(int signo) {
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psignal(signo, "Shutting down, got signal");
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exit(0);
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}
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static void sigreap(int signo) {
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while (waitpid(-1, NULL, WNOHANG) > 0)
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;
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}
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int main(int argc, char **argv) {
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int i;
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for (i = 1; i < argc; ++i) {
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if (!strcasecmp(argv[i], "-v")) {
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printf("pause.c %s\n", VERSION_STRING(VERSION));
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return 0;
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}
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}
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if (getpid() != 1)
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/* Not an error because pause sees use outside of infra containers. */
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fprintf(stderr, "Warning: pause should be the first process\n");
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if (sigaction(SIGINT, &(struct sigaction){.sa_handler = sigdown}, NULL) < 0)
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return 1;
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if (sigaction(SIGTERM, &(struct sigaction){.sa_handler = sigdown}, NULL) < 0)
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return 2;
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if (sigaction(SIGCHLD, &(struct sigaction){.sa_handler = sigreap,
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.sa_flags = SA_NOCLDSTOP},
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NULL) < 0)
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return 3;
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for (;;)
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pause();
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fprintf(stderr, "Error: infinite loop terminated\n");
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return 42;
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}
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