OHHHHH

CODE/linux/build_initrd.sh

@@ -0,0 +1,68 @@
+#!/bin/bash
+# Build initramfs only (assumes bzImage already built)
+set -e
+
+SCRIPT_DIR="/mnt/d/Code/Deshab/CODE/linux"
+PROJECT_ROOT="/mnt/d/Code/Deshab"
+OUTPUT_DIR="$PROJECT_ROOT/SYSTEM/boot"
+INITRAMFS_DIR="$SCRIPT_DIR/initramfs"
+LINUX_SRC="$HOME/linux-6.6"
+INITRAMFS_TMP="$SCRIPT_DIR/initramfs.tmp"
+
+rm -rf "$INITRAMFS_TMP"
+mkdir -p "$INITRAMFS_TMP/bin"
+cp -a "$INITRAMFS_DIR"/* "$INITRAMFS_TMP"/
+
+# Download static busybox
+BUSYBOX_CACHE="$SCRIPT_DIR/.cache/busybox"
+BUSYBOX_URL="https://busybox.net/downloads/binaries/1.35.0-x86_64-linux-musl/busybox"
+if [ ! -x "$BUSYBOX_CACHE" ]; then
+    echo "[initrd] Downloading static busybox..."
+    mkdir -p "$(dirname "$BUSYBOX_CACHE")"
+    curl -fL --retry 3 -o "$BUSYBOX_CACHE" "$BUSYBOX_URL"
+    chmod +x "$BUSYBOX_CACHE"
+fi
+cp "$BUSYBOX_CACHE" "$INITRAMFS_TMP/bin/busybox"
+chmod +x "$INITRAMFS_TMP/bin/busybox"
+echo "[initrd] busybox copied"
+
+# Build utsm_exec_daemon
+DAEMON_SRC="$INITRAMFS_DIR/bin/utsm_exec_daemon.c"
+if [ -f "$DAEMON_SRC" ]; then
+    echo "[initrd] Compiling utsm_exec_daemon..."
+    cc -static -O2 -Wall "-I$PROJECT_ROOT/CODE/utsm-ipc" \
+        -o "$INITRAMFS_TMP/bin/utsm_exec_daemon" "$DAEMON_SRC"
+    strip "$INITRAMFS_TMP/bin/utsm_exec_daemon" 2>/dev/null || true
+    echo "[initrd] daemon compiled"
+fi
+
+# gen_init_cpio
+GEN_INIT_CPIO="$LINUX_SRC/usr/gen_init_cpio"
+if [ ! -x "$GEN_INIT_CPIO" ]; then
+    echo "[initrd] Building gen_init_cpio..."
+    cd "$LINUX_SRC" && make usr/ >/dev/null
+fi
+
+SPEC="$SCRIPT_DIR/initramfs.tmp.spec"
+{
+    echo "dir /bin 755 0 0"
+    echo "dir /dev 755 0 0"
+    echo "dir /proc 755 0 0"
+    echo "dir /sys 755 0 0"
+    echo "nod /dev/console 600 0 0 c 5 1"
+    echo "nod /dev/null 666 0 0 c 1 3"
+    echo "nod /dev/ttyS0 600 0 0 c 4 64"
+    echo "file /init $INITRAMFS_TMP/init 755 0 0"
+    echo "file /bin/busybox $INITRAMFS_TMP/bin/busybox 755 0 0"
+    if [ -f "$INITRAMFS_TMP/bin/utsm_exec_daemon" ]; then
+        echo "file /bin/utsm_exec_daemon $INITRAMFS_TMP/bin/utsm_exec_daemon 755 0 0"
+    fi
+    for app in sh mount umount echo sleep uname ls cat ps setsid cttyhack; do
+        echo "slink /bin/$app /bin/busybox 777 0 0"
+    done
+} > "$SPEC"
+
+"$GEN_INIT_CPIO" "$SPEC" | gzip -9 > "$OUTPUT_DIR/linux-initrd.img"
+echo "[initrd] Done: $OUTPUT_DIR/linux-initrd.img"
+ls -lh "$OUTPUT_DIR/linux-initrd.img"
+rm -rf "$INITRAMFS_TMP" "$SPEC"

CODE/linux/patches/utsm_hcall.c

@@ -27,7 +27,9 @@
 #include <linux/wait.h>
 #include <linux/poll.h>
 
-/* Shared IPC protocol header (included via build.sh -I flag) */
+/* Shared IPC protocol header (included via build.sh -I flag).
+ * We provide our own hypercall wrappers, so skip the inline ones. */
+#define UTSM_NO_INLINE_HCALL
 #include <ipc_proto.h>
 
 #define UTSM_DEV_NAME "utsm"
@@ -382,7 +384,7 @@ static int __init utsm_hcall_init(void)
 	/* 3. Query shared memory info */
 	ret = utsm_hcall_shm_info(&shm_gpa, &shm_size);
 	if (ret != 0) {
-		pr_err("[utsm] SHM_INFO hypercall failed: %ld\n", ret);
+		pr_err("[utsm] SHM_INFO hypercall failed: %d\n", ret);
 		goto err_no_shm;
 	}