enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/drivers/ide/ide-floppy_ioctl.c
..
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@@ -5,6 +5,7 @@
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 #include <linux/kernel.h>
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 #include <linux/ide.h>
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+#include <linux/compat.h>
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 #include <linux/cdrom.h>
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 #include <linux/mutex.h>
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..
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@@ -302,3 +303,37 @@
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 	mutex_unlock(&ide_floppy_ioctl_mutex);
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 	return err;
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 }
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+
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+#ifdef CONFIG_COMPAT
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+int ide_floppy_compat_ioctl(ide_drive_t *drive, struct block_device *bdev,
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+			    fmode_t mode, unsigned int cmd, unsigned long arg)
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+{
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+	struct ide_atapi_pc pc;
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+	void __user *argp = compat_ptr(arg);
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+	int err;
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+
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+	mutex_lock(&ide_floppy_ioctl_mutex);
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+	if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) {
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+		err = ide_floppy_lockdoor(drive, &pc, arg, cmd);
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+		goto out;
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+	}
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+
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+	err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);
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+	if (err != -ENOTTY)
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+		goto out;
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+
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+	/*
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+	 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
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+	 * and CDROM_SEND_PACKET (legacy) ioctls
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+	 */
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+	if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
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+		err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
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+
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+	if (err == -ENOTTY)
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+		err = generic_ide_ioctl(drive, bdev, cmd, arg);
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+
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+out:
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+	mutex_unlock(&ide_floppy_ioctl_mutex);
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+	return err;
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+}
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+#endif