2003-07-21 10:48:48 +07:00
|
|
|
/*
|
|
|
|
* udev-remove.c
|
|
|
|
*
|
|
|
|
* Userspace devfs
|
|
|
|
*
|
|
|
|
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
|
|
|
|
*
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
|
|
* under the terms of the GNU General Public License as published by the
|
|
|
|
* Free Software Foundation version 2 of the License.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful, but
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License along
|
|
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <fcntl.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <errno.h>
|
|
|
|
|
|
|
|
#include "udev.h"
|
|
|
|
#include "udev_version.h"
|
|
|
|
#include "namedev.h"
|
2003-08-06 13:57:23 +07:00
|
|
|
#include "udevdb.h"
|
2003-07-21 10:48:48 +07:00
|
|
|
#include "libsysfs/libsysfs.h"
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
2003-10-21 10:28:42 +07:00
|
|
|
* Look up the sysfs path in the database to see if we have named this device
|
|
|
|
* something different from the kernel name. If we have, us it. If not, use
|
|
|
|
* the default kernel name for lack of anything else to know to do.
|
2003-07-21 10:48:48 +07:00
|
|
|
*/
|
2003-10-21 12:48:44 +07:00
|
|
|
static char *get_name(char *path, int major, int minor)
|
2003-07-21 10:48:48 +07:00
|
|
|
{
|
|
|
|
static char name[100];
|
2003-10-21 12:48:44 +07:00
|
|
|
struct udevice *dev;
|
2003-07-21 10:48:48 +07:00
|
|
|
char *temp;
|
|
|
|
|
2003-10-21 12:48:44 +07:00
|
|
|
dev = udevdb_get_dev(path);
|
|
|
|
if (dev != NULL) {
|
|
|
|
strcpy(name, dev->name);
|
2003-10-21 10:28:42 +07:00
|
|
|
goto exit;
|
2003-10-21 12:48:44 +07:00
|
|
|
}
|
2003-10-21 10:28:42 +07:00
|
|
|
|
2003-10-21 12:48:44 +07:00
|
|
|
dbg("%s not found in database, falling back on default name", path);
|
|
|
|
temp = strrchr(path, '/');
|
2003-07-21 10:48:48 +07:00
|
|
|
if (temp == NULL)
|
|
|
|
return NULL;
|
|
|
|
strncpy(name, &temp[1], sizeof(name));
|
|
|
|
|
2003-10-21 10:28:42 +07:00
|
|
|
exit:
|
2003-07-21 10:48:48 +07:00
|
|
|
dbg("name is %s", name);
|
|
|
|
return &name[0];
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We also want to clean up any symlinks that were created in create_node()
|
|
|
|
*/
|
|
|
|
static int delete_node(char *name)
|
|
|
|
{
|
|
|
|
char filename[255];
|
|
|
|
|
2003-10-22 10:19:09 +07:00
|
|
|
strncpy(filename, udev_root, sizeof(filename));
|
2003-07-21 10:48:48 +07:00
|
|
|
strncat(filename, name, sizeof(filename));
|
|
|
|
|
|
|
|
dbg("unlinking %s", filename);
|
|
|
|
return unlink(filename);
|
|
|
|
}
|
|
|
|
|
|
|
|
int udev_remove_device(char *device, char *subsystem)
|
|
|
|
{
|
|
|
|
char *name;
|
|
|
|
int retval = 0;
|
|
|
|
|
|
|
|
name = get_name(device, 0, 0);
|
|
|
|
if (name == NULL) {
|
|
|
|
dbg ("get_name failed");
|
|
|
|
retval = -ENODEV;
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
2003-10-21 10:28:42 +07:00
|
|
|
udevdb_delete_dev(device);
|
2003-08-06 13:57:23 +07:00
|
|
|
|
2003-07-21 10:48:48 +07:00
|
|
|
return delete_node(name);
|
|
|
|
|
|
|
|
exit:
|
|
|
|
return retval;
|
|
|
|
}
|