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/*
* udev_utils.c - generic stuff used by udev
*
* Copyright (C) 2004, 2005 Kay Sievers <kay.sievers@vrfy.org>
*
* 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 <stdio.h>
#include <stddef.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#include <syslog.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/utsname.h>
#include "udev_libc_wrapper.h"
#include "udev.h"
#include "logging.h"
#include "udev_utils.h"
#include "udev_sysfs.h"
#include "list.h"
int udev_init_device(struct udevice *udev, const char* devpath, const char *subsystem, const char *action)
{
char *pos;
memset(udev, 0x00, sizeof(struct udevice));
INIT_LIST_HEAD(&udev->symlink_list);
INIT_LIST_HEAD(&udev->run_list);
INIT_LIST_HEAD(&udev->env_list);
if (subsystem)
strlcpy(udev->subsystem, subsystem, sizeof(udev->subsystem));
if (action)
strlcpy(udev->action, action, sizeof(udev->action));
if (devpath) {
strlcpy(udev->devpath, devpath, sizeof(udev->devpath));
remove_trailing_chars(udev->devpath, '/');
if (strncmp(udev->devpath, "/block/", 7) == 0)
udev->type = DEV_BLOCK;
else if (strncmp(udev->devpath, "/class/net/", 11) == 0)
udev->type = DEV_NET;
else if (strncmp(udev->devpath, "/class/", 7) == 0)
udev->type = DEV_CLASS;
else if (strncmp(udev->devpath, "/devices/", 9) == 0)
udev->type = DEV_DEVICE;
/* get kernel name */
pos = strrchr(udev->devpath, '/');
if (pos) {
strlcpy(udev->kernel_name, &pos[1], sizeof(udev->kernel_name));
dbg("kernel_name='%s'", udev->kernel_name);
/* Some block devices have '!' in their name, change that to '/' */
pos = udev->kernel_name;
while (pos[0] != '\0') {
if (pos[0] == '!')
pos[0] = '/';
pos++;
}
/* get kernel number */
pos = &udev->kernel_name[strlen(udev->kernel_name)];
while (isdigit(pos[-1]))
pos--;
strlcpy(udev->kernel_number, pos, sizeof(udev->kernel_number));
dbg("kernel_number='%s'", udev->kernel_number);
}
}
if (udev->type == DEV_BLOCK || udev->type == DEV_CLASS) {
udev->mode = 0660;
strcpy(udev->owner, "root");
strcpy(udev->group, "root");
}
return 0;
}
void udev_cleanup_device(struct udevice *udev)
{
name_list_cleanup(&udev->symlink_list);
name_list_cleanup(&udev->run_list);
name_list_cleanup(&udev->env_list);
}
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