Add stuff to support upcoming BMC/IPMI flashing of newer Dell machine

via the Linux tool.
     -  Add Linux shim to ipmi(4)
     -  Create a partitions file to linprocfs to make Linux fdisk see
        disks.  This file is dynamic so we can see disks come and go.
     -  Convert msdosfs to vfat in mtab since Linux uses that for
        msdosfs.
     -  In the Linux mount path convert vfat passed in to msdosfs
        so Linux mount works on FreeBSD.  Note that tasting works
        so that if da0 is a msdos file system
                /compat/linux/bin/mount /dev/da0 /mnt
        works.
     -  fix a 64it bug for l_off_t.
Grabing sh, mount, fdisk, df from Linux, creating a symlink of mtab to
/compat/linux/etc/mtab and then some careful unpacking of the Linux bmc
update tool and hacking makes it work on newer Dell boxes.  Note, probably
if you can't figure out how to do this, then you probably shouldn't be
doing it :-)

1 files changed, 113 insertions, 0 deletions

diff --git a/sys/dev/ipmi/ipmi_linux.c b/sys/dev/ipmi/ipmi_linux.c
new file mode 100644
index 0000000..fcf2bd5
--- /dev/null
+++ b/sys/dev/ipmi/ipmi_linux.c
@@ -0,0 +1,113 @@
+/*-
+ * Copyright (c) 2009 IronPort Systems Inc. <ambrisko@ironport.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Linux ioctl handler for the ipmi device driver
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/file.h>
+#include <sys/proc.h>
+#ifdef __amd64__
+#include <machine/../linux32/linux.h>
+#include <machine/../linux32/linux32_proto.h>
+#else
+#include <machine/../linux/linux.h>
+#include <machine/../linux/linux_proto.h>
+#endif
+#include <compat/linux/linux_ioctl.h>
+#include <sys/ioccom.h>
+#include <sys/ipmi.h>
+
+/* There are multiple ioctl number ranges that need to be handled */
+#define IPMI_LINUX_IOCTL_MIN  0x690b
+#define IPMI_LINUX_IOCTL_MAX  0x6915
+
+/* Linux versions of ioctl's */
+#define L_IPMICTL_RECEIVE_MSG_TRUNC       _IOWR(IPMI_IOC_MAGIC, 11, struct ipmi_recv)
+#define L_IPMICTL_RECEIVE_MSG             _IOWR(IPMI_IOC_MAGIC, 12, struct ipmi_recv)
+#define L_IPMICTL_SEND_COMMAND            _IOW(IPMI_IOC_MAGIC, 13, struct ipmi_req)
+#define L_IPMICTL_REGISTER_FOR_CMD        _IOW(IPMI_IOC_MAGIC, 14, struct ipmi_cmdspec)
+#define L_IPMICTL_UNREGISTER_FOR_CMD      _IOW(IPMI_IOC_MAGIC, 15, struct ipmi_cmdspec)
+#define L_IPMICTL_SET_GETS_EVENTS_CMD     _IOW(IPMI_IOC_MAGIC, 16, int)
+#define L_IPMICTL_SET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 17, unsigned int)
+#define L_IPMICTL_GET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 18, unsigned int)
+#define L_IPMICTL_SET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 19, unsigned int)
+#define L_IPMICTL_GET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 20, unsigned int)
+
+static linux_ioctl_function_t ipmi_linux_ioctl;
+static struct linux_ioctl_handler ipmi_linux_handler = {ipmi_linux_ioctl,
+						       IPMI_LINUX_IOCTL_MIN,
+						       IPMI_LINUX_IOCTL_MAX};
+
+SYSINIT  (ipmi_linux_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_ioctl_register_handler, &ipmi_linux_handler);
+SYSUNINIT(ipmi_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_ioctl_unregister_handler, &ipmi_linux_handler);
+
+static int
+ipmi_linux_modevent(module_t mod, int type, void *data)
+{
+	/* Do we care about any specific load/unload actions? */
+	return (0);
+}
+
+DEV_MODULE(ipmi_linux, ipmi_linux_modevent, NULL);
+MODULE_DEPEND(ipmi_linux, linux, 1, 1, 1);
+
+static int
+ipmi_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
+{
+	struct file *fp;
+	u_long cmd;
+	int error;
+
+	if ((error = fget(td, args->fd, &fp)) != 0)
+		return (error);
+	cmd = args->cmd;
+
+	switch(cmd) {
+	case L_IPMICTL_GET_MY_ADDRESS_CMD:
+		cmd = IPMICTL_GET_MY_ADDRESS_CMD;
+		break;
+	case L_IPMICTL_GET_MY_LUN_CMD:
+		cmd = IPMICTL_GET_MY_LUN_CMD;
+		break;
+	}
+	/*
+	 * Pass the ioctl off to our standard handler.
+	 */
+	error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
+	fdrop(fp, td);
+	return (error);
+}