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https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
ee3ac3aa66
This adds a small C binary for fighting zombies. It is mounted under
`/dev/init` and is prepended to the args specified by the user. You
enable it via a daemon flag, `dockerd --init`, as it is disable by
default for backwards compat.
You can also override the daemon option or specify this on a per
container basis with `docker run --init=true|false`.
You can test this by running a process like this as the pid 1 in a
container and see the extra zombie that appears in the container as it
is running.
```c
int main(int argc, char ** argv) {
pid_t pid = fork();
if (pid == 0) {
pid = fork();
if (pid == 0) {
exit(0);
}
sleep(3);
exit(0);
}
printf("got pid %d and exited\n", pid);
sleep(20);
}
```
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
82 lines
2.3 KiB
Bash
82 lines
2.3 KiB
Bash
#!/bin/bash
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CROSS="$DEST/../cross"
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set -e
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if [ ! -d "$CROSS/linux/amd64" ]; then
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echo >&2 'error: binary and cross must be run before tgz'
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false
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fi
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(
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for d in "$CROSS/"*/*; do
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export GOARCH="$(basename "$d")"
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export GOOS="$(basename "$(dirname "$d")")"
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source "${MAKEDIR}/.binary-setup"
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BINARY_NAME="${DOCKER_CLIENT_BINARY_NAME}-$VERSION"
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DAEMON_BINARY_NAME="${DOCKER_DAEMON_BINARY_NAME}-$VERSION"
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PROXY_BINARY_NAME="${DOCKER_PROXY_BINARY_NAME}-$VERSION"
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BINARY_EXTENSION="$(export GOOS && binary_extension)"
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if [ "$GOOS" = 'windows' ]; then
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# if windows use a zip, not tgz
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BUNDLE_EXTENSION=".zip"
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IS_TAR="false"
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else
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BUNDLE_EXTENSION=".tgz"
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IS_TAR="true"
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fi
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BINARY_FULLNAME="$BINARY_NAME$BINARY_EXTENSION"
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DAEMON_BINARY_FULLNAME="$DAEMON_BINARY_NAME$BINARY_EXTENSION"
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PROXY_BINARY_FULLNAME="$PROXY_BINARY_NAME$BINARY_EXTENSION"
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mkdir -p "$DEST/$GOOS/$GOARCH"
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TGZ="$DEST/$GOOS/$GOARCH/$BINARY_NAME$BUNDLE_EXTENSION"
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# The staging directory for the files in the tgz
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BUILD_PATH="$DEST/build"
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# The directory that is at the root of the tar file
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TAR_BASE_DIRECTORY="docker"
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# $DEST/build/docker
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TAR_PATH="$BUILD_PATH/$TAR_BASE_DIRECTORY"
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# Copy the correct docker binary
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mkdir -p $TAR_PATH
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cp -L "$d/$BINARY_FULLNAME" "$TAR_PATH/${DOCKER_CLIENT_BINARY_NAME}${BINARY_EXTENSION}"
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if [ -f "$d/$DAEMON_BINARY_FULLNAME" ]; then
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cp -L "$d/$DAEMON_BINARY_FULLNAME" "$TAR_PATH/${DOCKER_DAEMON_BINARY_NAME}${BINARY_EXTENSION}"
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fi
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if [ -f "$d/$PROXY_BINARY_FULLNAME" ]; then
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cp -L "$d/$PROXY_BINARY_FULLNAME" "$TAR_PATH/${DOCKER_PROXY_BINARY_NAME}${BINARY_EXTENSION}"
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fi
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# copy over all the extra binaries
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copy_binaries $TAR_PATH
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if [ "$IS_TAR" == "true" ]; then
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echo "Creating tgz from $BUILD_PATH and naming it $TGZ"
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tar --numeric-owner --owner 0 -C "$BUILD_PATH" -czf "$TGZ" $TAR_BASE_DIRECTORY
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else
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# ZIP needs to full absolute dir path, not the absolute path
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ZIP=`pwd`"/$TGZ"
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# keep track of where we are, for later.
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pushd .
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# go into the BUILD_PATH since zip does not have a -C equivalent.
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cd $BUILD_PATH
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echo "Creating zip from $BUILD_PATH and naming it $ZIP"
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zip -q -r $ZIP $TAR_BASE_DIRECTORY
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# go back to where we started
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popd
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fi
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hash_files "$TGZ"
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# cleanup after ourselves
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rm -rf "$BUILD_PATH"
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echo "Created tgz: $TGZ"
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done
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)
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