+int is_removable(char *devpath)
+{
+ char fnbuf[256];
+ int len;
+ char *ptr;
+ int fd;
+
+ len = snprintf(fnbuf, sizeof(fnbuf), "/sys%s", devpath);
+ if(len+10>=(int)sizeof(fnbuf))
+ return 0;
+
+ for(ptr=fnbuf+len; (ptr>fnbuf && *ptr!='/'); --ptr) ;
+ strcpy(ptr, "/removable");
+ fd = open(fnbuf, O_RDONLY);
+ if(fd!=-1)
+ {
+ char c;
+ read(fd, &c, 1);
+ close(fd);
+ if(c=='1')
+ {
+ if(verbosity>=2)
+ printf(" Removable\n");
+ return 1;
+ }
+ if(verbosity>=2)
+ printf(" Not removable\n");
+ }
+
+ return 0;
+}
+
+int check_buses(char *devpath, char **buses)
+{
+ char fnbuf[256];
+ char *ptr;
+ int len;
+
+ len = snprintf(fnbuf, sizeof(fnbuf), "/sys%s", devpath);
+ if(len+10>=(int)sizeof(fnbuf))
+ return 0;
+
+ for(ptr=fnbuf+len; ptr>fnbuf+12; --ptr)
+ if(*ptr=='/')
+ {
+ char linkbuf[256];
+ strcpy(ptr, "/subsystem");
+ len = readlink(fnbuf, linkbuf, sizeof(linkbuf)-1);
+
+ if(len!=-1)
+ {
+ linkbuf[len] = 0;
+ for(; (len>0 && linkbuf[len-1]!='/'); --len) ;
+ if(verbosity>=2)
+ {
+ *ptr = 0;
+ printf(" Subsystem of %s is %s\n", fnbuf, linkbuf+len);
+ }
+ if(is_in_array(buses, linkbuf+len))
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int can_mount(Property *props, char **allowed)
+{
+ static char *removable_buses[] = { "usb", "firewire", 0 };
+ char *devname;
+ char *devpath;
+ char *bus;
+
+ devname = get_property_value(props, "DEVNAME");
+ if(is_in_array(allowed, devname))
+ return 1;
+
+ if(match_property_value(props, "ID_TYPE", "cd") && match_property_value(props, "ID_CDROM_MEDIA", "1"))
+ return 1;
+
+ if(!match_property_value(props, "DEVTYPE", "partition"))
+ return 0;
+
+ devpath = get_property_value(props, "DEVPATH");
+ if(is_removable(devpath))
+ return 1;
+
+ bus = get_property_value(props, "ID_BUS");
+ if(is_in_array(removable_buses, bus))
+ return 1;
+
+ return check_buses(devpath, removable_buses);
+}
+
+char **get_device_nodes(char *dirname)