/*
* udev_db.c
*
- * Userspace devfs
- *
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
*
if (udev->test_run)
return 0;
- get_db_filename(udev->devpath, filename, sizeof(filename));
+ /* don't write anything if udev created only the node with the
+ * kernel name without any interesting data to remember
+ */
+ if (strcmp(udev->name, udev->kernel_name) == 0 &&
+ list_empty(&udev->symlink_list) && list_empty(&udev->env_list) &&
+ !udev->partitions && !udev->ignore_remove) {
+ dbg("nothing interesting to store in udevdb, skip");
+ goto exit;
+ }
+ get_db_filename(udev->devpath, filename, sizeof(filename));
create_path(filename);
-
f = fopen(filename, "w");
if (f == NULL) {
err("unable to create db file '%s'", filename);
list_for_each_entry(name_loop, &udev->symlink_list, node)
fprintf(f, "S:%s\n", name_loop->name);
fprintf(f, "M:%u:%u\n", major(udev->devt), minor(udev->devt));
- fprintf(f, "A:%u\n", udev->partitions);
- fprintf(f, "R:%u\n", udev->ignore_remove);
-
+ if (udev->partitions)
+ fprintf(f, "A:%u\n", udev->partitions);
+ if (udev->ignore_remove)
+ fprintf(f, "R:%u\n", udev->ignore_remove);
+ list_for_each_entry(name_loop, &udev->env_list, node)
+ fprintf(f, "E:%s\n", name_loop->name);
fclose(f);
+exit:
return 0;
}
case 'P':
if (count > sizeof(udev->devpath))
count = sizeof(udev->devpath);
- strlcpy(udev->devpath, &bufline[2], count-1);
+ memcpy(udev->devpath, &bufline[2], count-2);
+ udev->devpath[count-2] = '\0';
break;
case 'N':
if (count > sizeof(udev->name))
count = sizeof(udev->name);
- strlcpy(udev->name, &bufline[2], count-1);
+ memcpy(udev->name, &bufline[2], count-2);
+ udev->name[count-2] = '\0';
break;
case 'M':
if (count > sizeof(line))
count = sizeof(line);
- strlcpy(line, &bufline[2], count-1);
+ memcpy(line, &bufline[2], count-2);
+ line[count-2] = '\0';
sscanf(line, "%u:%u", &major, &minor);
udev->devt = makedev(major, minor);
break;
case 'S':
if (count > sizeof(line))
count = sizeof(line);
- strlcpy(line, &bufline[2], count-1);
+ memcpy(line, &bufline[2], count-2);
+ line[count-2] = '\0';
name_list_add(&udev->symlink_list, line, 0);
break;
case 'A':
if (count > sizeof(line))
count = sizeof(line);
- strlcpy(line, &bufline[2], count-1);
+ memcpy(line, &bufline[2], count-2);
+ line[count-2] = '\0';
udev->partitions = atoi(line);
break;
case 'R':
if (count > sizeof(line))
count = sizeof(line);
- strlcpy(line, &bufline[2], count-1);
+ memcpy(line, &bufline[2], count-2);
+ line[count-2] = '\0';
udev->ignore_remove = atoi(line);
break;
+ case 'E':
+ if (count > sizeof(line))
+ count = sizeof(line);
+ memcpy(line, &bufline[2], count-2);
+ line[count-2] = '\0';
+ name_list_add(&udev->env_list, line, 0);
+ break;
}
}
file_unmap(buf, bufsize);
case 'P':
if (count > sizeof(path))
count = sizeof(path);
- strlcpy(path, &bufline[2], count-1);
+ memcpy(path, &bufline[2], count-2);
+ path[count-2] = '\0';
break;
case 'N':
case 'S':
if (count > sizeof(nodename))
count = sizeof(nodename);
- strlcpy(nodename, &bufline[2], count-1);
+ memcpy(nodename, &bufline[2], count-2);
+ nodename[count-2] = '\0';
dbg("compare '%s' '%s'", nodename, name);
if (strcmp(nodename, name) == 0) {
- strlcpy(devpath, path, len);
+ memcpy(devpath, &bufline[2], count-2);
+ devpath[count-2] = '\0';
file_unmap(buf, bufsize);
closedir(dir);
return 0;
case 'P':
if (count > sizeof(path))
count = sizeof(path);
- strlcpy(path, &bufline[2], count-1);
+ memcpy(path, &bufline[2], count-2);
+ path[count-2] = '\0';
break;
case 'N':
if (count > sizeof(nodename))
count = sizeof(nodename);
- strlcpy(nodename, &bufline[2], count-1);
+ memcpy(nodename, &bufline[2], count-2);
+ nodename[count-2] = '\0';
break;
default:
continue;