88eb5c506d
'devctl delete' can be used to delete a device that is no longer present.
As an anti-foot-shooting measure, 'delete' will not delete a device
unless it's parent bus says it is no longer present. This can be
overridden by passing the force ('-f') flag.
Note that this command should be used with care. If a device is deleted
that is actually present it can't be resurrected unless the parent bus
device's driver supports rescans.
Differential Revision: https://reviews.freebsd.org/D6019
140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
/*-
|
|
* Copyright (c) 2014 John Baldwin <jhb@FreeBSD.org>
|
|
* 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("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/bus.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include "devctl.h"
|
|
|
|
static int
|
|
devctl_request(u_long cmd, struct devreq *req)
|
|
{
|
|
static int devctl2_fd = -1;
|
|
|
|
if (devctl2_fd == -1) {
|
|
devctl2_fd = open("/dev/devctl2", O_RDONLY);
|
|
if (devctl2_fd == -1)
|
|
return (-1);
|
|
}
|
|
return (ioctl(devctl2_fd, cmd, req));
|
|
}
|
|
|
|
static int
|
|
devctl_simple_request(u_long cmd, const char *name, int flags)
|
|
{
|
|
struct devreq req;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
if (strlcpy(req.dr_name, name, sizeof(req.dr_name)) >=
|
|
sizeof(req.dr_name)) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
req.dr_flags = flags;
|
|
return (devctl_request(cmd, &req));
|
|
}
|
|
|
|
int
|
|
devctl_attach(const char *device)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_ATTACH, device, 0));
|
|
}
|
|
|
|
int
|
|
devctl_detach(const char *device, bool force)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_DETACH, device, force ?
|
|
DEVF_FORCE_DETACH : 0));
|
|
}
|
|
|
|
int
|
|
devctl_enable(const char *device)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_ENABLE, device, 0));
|
|
}
|
|
|
|
int
|
|
devctl_disable(const char *device, bool force_detach)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_DISABLE, device, force_detach ?
|
|
DEVF_FORCE_DETACH : 0));
|
|
}
|
|
|
|
int
|
|
devctl_suspend(const char *device)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_SUSPEND, device, 0));
|
|
}
|
|
|
|
int
|
|
devctl_resume(const char *device)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_RESUME, device, 0));
|
|
}
|
|
|
|
int
|
|
devctl_set_driver(const char *device, const char *driver, bool force)
|
|
{
|
|
struct devreq req;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
if (strlcpy(req.dr_name, device, sizeof(req.dr_name)) >=
|
|
sizeof(req.dr_name)) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
req.dr_data = __DECONST(char *, driver);
|
|
if (force)
|
|
req.dr_flags |= DEVF_SET_DRIVER_DETACH;
|
|
return (devctl_request(DEV_SET_DRIVER, &req));
|
|
}
|
|
|
|
int
|
|
devctl_rescan(const char *device)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_RESCAN, device, 0));
|
|
}
|
|
|
|
int
|
|
devctl_delete(const char *device, bool force)
|
|
{
|
|
|
|
return (devctl_simple_request(DEV_DELETE, device, force ?
|
|
DEVF_FORCE_DELETE : 0));
|
|
}
|