From 40fb7f8a45bba5aa9e4c87fe5440bed5a84888c8 Mon Sep 17 00:00:00 2001
From: gi8 <giottolino@gmail.com>
Date: Wed, 20 Nov 2024 16:15:45 +0100
Subject: [PATCH] remove wrapper

---
 Dockerfile | 15 +-----------
 wrapper.c  | 67 ------------------------------------------------------
 2 files changed, 1 insertion(+), 81 deletions(-)
 delete mode 100644 wrapper.c

diff --git a/Dockerfile b/Dockerfile
index 23a0755..0a2f44c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,3 @@
-# Step 1: Build the wrapper
-FROM alpine:3.20 as wrapper-builder
-
-RUN apk add --no-cache gcc musl-dev make
-
-COPY wrapper.c /src/wrapper.c
-
-RUN gcc -o /wrapper /src/wrapper.c -static && chmod +x /wrapper
-
-# Step 2: Download kubectl binary
 FROM alpine:3.20 as downloader
 
 # renovate: datasource=github-tags depName=kubernetes/kubectl extractVersion=^kubernetes-(?<version>.*)$
@@ -17,11 +7,8 @@ RUN apk add --no-cache curl && \
   curl -LO "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl" && \
   chmod +x kubectl
 
-# Step 3: Create the final minimal image
 FROM gcr.io/distroless/static-debian12:nonroot
 
 COPY --from=downloader /kubectl /usr/local/bin/kubectl
-COPY --from=wrapper-builder /wrapper /usr/local/bin/wrapper
 
-ENTRYPOINT ["/usr/local/bin/wrapper"]
-CMD [ "kubectl" ]
+ENTRYPOINT ["/usr/local/bin/kubectl"]
diff --git a/wrapper.c b/wrapper.c
deleted file mode 100644
index 8bf0f06..0000000
--- a/wrapper.c
+++ /dev/null
@@ -1,67 +0,0 @@
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-volatile sig_atomic_t terminate = 0;
-
-void handle_signal(int sig) {
-    terminate = 1;
-}
-
-int main(int argc, char *argv[]) {
-    if (argc < 2) {
-        fprintf(stderr, "Usage: %s <command> [arguments...]\n", argv[0]);
-        return EXIT_FAILURE;
-    }
-
-    // Set up signal handling for SIGINT and SIGTERM
-    struct sigaction sa = {0};
-    sa.sa_handler = handle_signal;
-    sa.sa_flags = SA_RESTART; // Automatically restart interrupted system calls
-    if (sigaction(SIGINT, &sa, NULL) == -1 || sigaction(SIGTERM, &sa, NULL) == -1) {
-        perror("Failed to set signal handlers");
-        return EXIT_FAILURE;
-    }
-
-    // Fork the process to execute the command
-    pid_t pid = fork();
-    if (pid < 0) {
-        perror("Failed to fork");
-        return EXIT_FAILURE;
-    }
-
-    if (pid == 0) {
-        // Child process: Execute the command
-        execvp(argv[1], &argv[1]);
-        perror("Failed to execute command");
-        _exit(EXIT_FAILURE);
-    }
-
-    // Parent process: Monitor the child process
-    int status;
-    while (!terminate) {
-        if (waitpid(pid, &status, 0) == -1) {
-            if (terminate) break; // Exit loop if signal was caught
-            perror("Error while waiting for child process");
-            return EXIT_FAILURE;
-        }
-
-        if (WIFEXITED(status)) {
-            return WEXITSTATUS(status); // Child exited normally
-        }
-
-        if (WIFSIGNALED(status)) {
-            fprintf(stderr, "Child process terminated by signal %d\n", WTERMSIG(status));
-            return EXIT_FAILURE;
-        }
-    }
-
-    // Handle termination signal
-    kill(pid, SIGTERM);
-    waitpid(pid, &status, 0); // Ensure child is reaped
-    return EXIT_FAILURE;
-}
-