fix(ci): extract QEMU interceptor to dedicated C file to fix YAML indentation

.github/workflows/build-apk.yaml

@@ -47,96 +47,6 @@ jobs:
             export QEMU_LD_PREFIX=/usr/x86_64-linux-gnu
             echo "QEMU_LD_PREFIX=/usr/x86_64-linux-gnu" >> "$GITHUB_ENV"
 
-            # Create transparent execve/posix_spawn interceptor to route ALL x86_64 binaries to QEMU
-            cat << 'EOF' > /tmp/qemu_intercept.c
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <dlfcn.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <spawn.h>
-
-static int is_x86_64_elf(const char *path) {
-    if (!path) return 0;
-    int fd = open(path, O_RDONLY);
-    if (fd < 0) return 0;
-    unsigned char header[20];
-    ssize_t n = read(fd, header, sizeof(header));
-    close(fd);
-    if (n < 20) return 0;
-    if (header[0] != 0x7f || header[1] != 'E' || header[2] != 'L' || header[3] != 'F') return 0;
-    if (header[4] != 2 || header[5] != 1) return 0;
-    uint16_t machine = (uint16_t)(header[18] | (header[19] << 8));
-    return machine == 62;
-}
-
-static char **build_qemu_argv(const char *pathname, char *const argv[]) {
-    int argc = 0;
-    while (argv && argv[argc]) argc++;
-    char **new_argv = malloc((argc + 4) * sizeof(char *));
-    new_argv[0] = "/usr/bin/qemu-x86_64-static";
-    new_argv[1] = "-L";
-    new_argv[2] = "/usr/x86_64-linux-gnu";
-    new_argv[3] = (char *)pathname;
-    for (int i = 1; i < argc; i++) {
-        new_argv[i + 3] = argv[i];
-    }
-    new_argv[argc + 3] = NULL;
-    return new_argv;
-}
-
-int execve(const char *pathname, char *const argv[], char *const envp[]) {
-    static int (*real_execve)(const char *, char *const [], char *const []) = NULL;
-    if (!real_execve) real_execve = dlsym(RTLD_NEXT, "execve");
-    if (pathname && is_x86_64_elf(pathname)) {
-        char **new_argv = build_qemu_argv(pathname, argv);
-        return real_execve("/usr/bin/qemu-x86_64-static", new_argv, envp);
-    }
-    return real_execve(pathname, argv, envp);
-}
-
-int execv(const char *pathname, char *const argv[]) {
-    extern char **environ;
-    return execve(pathname, argv, environ);
-}
-
-int execvp(const char *file, char *const argv[]) {
-    extern char **environ;
-    return execve(file, argv, environ);
-}
-
-int execvpe(const char *file, char *const argv[], char *const envp[]) {
-    return execve(file, argv, envp);
-}
-
-int posix_spawn(pid_t *pid, const char *path,
-                const posix_spawn_file_actions_t *file_actions,
-                const posix_spawnattr_t *attrp,
-                char *const argv[], char *const envp[]) {
-    static int (*real_posix_spawn)(pid_t *, const char *, const posix_spawn_file_actions_t *,
-                                  const posix_spawnattr_t *, char *const [], char *const []) = NULL;
-    if (!real_posix_spawn) real_posix_spawn = dlsym(RTLD_NEXT, "posix_spawn");
-    if (path && is_x86_64_elf(path)) {
-        char **new_argv = build_qemu_argv(path, argv);
-        return real_posix_spawn(pid, "/usr/bin/qemu-x86_64-static", file_actions, attrp, new_argv, envp);
-    }
-    return real_posix_spawn(pid, path, file_actions, attrp, argv, envp);
-}
-
-int posix_spawnp(pid_t *pid, const char *file,
-                 const posix_spawn_file_actions_t *file_actions,
-                 const posix_spawnattr_t *attrp,
-                 char *const argv[], char *const envp[]) {
-    return posix_spawn(pid, file, file_actions, attrp, argv, envp);
-}
-EOF
-            gcc -O2 -shared -fPIC -o /usr/local/lib/libqemu_intercept.so /tmp/qemu_intercept.c -ldl
-            echo "/usr/local/lib/libqemu_intercept.so" > /etc/ld.so.preload
-            echo "Installed transparent QEMU execution interceptor into /etc/ld.so.preload"
-
             QEMU_BIN=$(command -v qemu-x86_64-static || command -v qemu-x86_64)
 
             # Dummy fallbacks for FEX binaries/sockets
@@ -159,6 +69,16 @@ EOF
       - name: Checkout Repository
         uses: actions/checkout@v4
 
+      - name: Setup QEMU Interceptor
+        run: |
+          ARCH=$(uname -m)
+          if [ "$ARCH" = "aarch64" ] || [ "$ARCH" = "arm64" ]; then
+            echo "Compiling and installing transparent QEMU execution interceptor..."
+            gcc -O2 -shared -fPIC -o /usr/local/lib/libqemu_intercept.so scripts/ci/qemu_intercept.c -ldl
+            echo "/usr/local/lib/libqemu_intercept.so" > /etc/ld.so.preload
+            echo "Installed transparent QEMU execution interceptor into /etc/ld.so.preload"
+          fi
+
       - name: Make Gradlew Executable
         run: |
           if [ -f android/gradlew ]; then