freebsd-src/usr.sbin/sysinstall/usb.c
Colin Percival 2245fa69bb Make sysinstall search for /dev/daXa and register such devices as USB disks.
This covers the common case of unsliced USB drives, and makes it possible to
select them as installation source media.

PR:		61152, 115197, 135016
Submitted by:	randi
MFC after:	1 month
2009-06-24 23:17:00 +00:00

89 lines
2.5 KiB
C

/*
* 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,
* verbatim and that no modifications are made prior to this
* point in the file.
* 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 JORDAN HUBBARD ``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 JORDAN HUBBARD OR HIS PETS 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, LIFE 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.
*
* used floppy.c and cdrom.c as templates, edited as necessary.
*
* $FreeBSD$
*/
#include <sys/fcntl.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <ufs/ufs/ufsmount.h>
#include "sysinstall.h"
static Boolean USBMounted;
static char mountpoint[] = "/dist";
Boolean
mediaInitUSB(Device *dev)
{
struct ufs_args ufsargs;
if (USBMounted)
return TRUE;
Mkdir(mountpoint);
memset(&ufsargs, 0, sizeof(ufsargs));
ufsargs.fspec = dev->devname;
if (mount("ufs", mountpoint, MNT_RDONLY, (caddr_t)&ufsargs) != -1) {
USBMounted = TRUE;
return TRUE;
}
msgConfirm("Error mounting USB drive %s (%s) on %s : %s",
dev->name, dev->devname, mountpoint, strerror(errno));
return FALSE;
}
FILE *
mediaGetUSB(Device *dev, char *file, Boolean probe)
{
return mediaGenericGet(mountpoint, file);
}
/*
* When sysinstall terminates, all USB drives handled by deviceRegister will
* be checked and unmounted if necessary.
*/
void
mediaShutdownUSB(Device *dev)
{
if (!USBMounted)
return;
if (unmount(mountpoint, MNT_FORCE) != 0)
msgConfirm("Could not unmount the USB drive from %s: %s",
mountpoint, strerror(errno));
else
USBMounted = FALSE;
}