udev: remove configuration options for /dev, /sys, /run directories

8 files changed, 63 insertions, 193 deletions

diff --git a/src/libudev/libudev-device-private.c b/src/libudev/libudev-device-private.c
index 91fd06c025..c58cde2ff6 100644
--- a/src/libudev/libudev-device-private.c
+++ b/src/libudev/libudev-device-private.c
@@ -31,7 +31,7 @@ static void udev_device_tag(struct udev_device *dev, const char *tag, bool add)
         id = udev_device_get_id_filename(dev);
         if (id == NULL)
                 return;
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/tags/", tag, "/", id, NULL);
+        util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/run/udev/tags/", tag, "/", id, NULL);
 
         if (add) {
                 int fd;
@@ -108,7 +108,7 @@ int udev_device_update_db(struct udev_device *udev_device)
                 return -1;
 
         has_info = device_has_info(udev_device);
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL);
+        util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/run/udev/data/", id, NULL);
 
         /* do not store anything for otherwise empty devices */
         if (!has_info &&
@@ -138,10 +138,8 @@ int udev_device_update_db(struct udev_device *udev_device)
                 struct udev_list_entry *list_entry;
 
                 if (major(udev_device_get_devnum(udev_device)) > 0) {
-                        size_t devlen = strlen(udev_get_dev_path(udev))+1;
-
                         udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(udev_device))
-                                fprintf(f, "S:%s\n", &udev_list_entry_get_name(list_entry)[devlen]);
+                                fprintf(f, "S:%s\n", udev_list_entry_get_name(list_entry) + strlen(TEST_PREFIX "/dev/"));
                         if (udev_device_get_devlink_priority(udev_device) != 0)
                                 fprintf(f, "L:%i\n", udev_device_get_devlink_priority(udev_device));
                         if (udev_device_get_watch_handle(udev_device) >= 0)
@@ -173,13 +171,12 @@ int udev_device_update_db(struct udev_device *udev_device)
 int udev_device_delete_db(struct udev_device *udev_device)
 {
         const char *id;
-        struct udev *udev = udev_device_get_udev(udev_device);
         char filename[UTIL_PATH_SIZE];
 
         id = udev_device_get_id_filename(udev_device);
         if (id == NULL)
                 return -1;
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL);
+        util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/run/udev/data/", id, NULL);
         unlink(filename);
         return 0;
 }
diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index 257d6355fe..212163bb92 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -356,7 +356,7 @@ void udev_device_add_property_from_string_parse(struct udev_device *udev_device,
         if (strncmp(property, "DEVPATH=", 8) == 0) {
                 char path[UTIL_PATH_SIZE];
 
-                util_strscpyl(path, sizeof(path), udev_get_sys_path(udev_device->udev), &property[8], NULL);
+                util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys", &property[8], NULL);
                 udev_device_set_syspath(udev_device, path);
         } else if (strncmp(property, "SUBSYSTEM=", 10) == 0) {
                 udev_device_set_subsystem(udev_device, &property[10]);
@@ -473,7 +473,7 @@ int udev_device_read_db(struct udev_device *udev_device, const char *dbfile)
                 id = udev_device_get_id_filename(udev_device);
                 if (id == NULL)
                         return -1;
-                util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_device->udev), "/data/", id, NULL);
+                util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/run/udev/data/", id, NULL);
                 dbfile = filename;
         }
 
@@ -496,7 +496,7 @@ int udev_device_read_db(struct udev_device *udev_device, const char *dbfile)
                 val = &line[2];
                 switch(line[0]) {
                 case 'S':
-                        util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/", val, NULL);
+                        util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/dev/", val, NULL);
                         udev_device_add_devlink(udev_device, filename, 0);
                         break;
                 case 'L':
@@ -624,7 +624,6 @@ struct udev_device *udev_device_new(struct udev *udev)
  **/
 _public_ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath)
 {
-        size_t len;
         const char *subdir;
         char path[UTIL_PATH_SIZE];
         char *pos;
@@ -637,14 +636,13 @@ _public_ struct udev_device *udev_device_new_from_syspath(struct udev *udev, con
                 return NULL;
 
         /* path starts in sys */
-        len = strlen(udev_get_sys_path(udev));
-        if (strncmp(syspath, udev_get_sys_path(udev), len) != 0) {
+        if (strncmp(syspath, TEST_PREFIX "/sys", strlen(TEST_PREFIX "/sys")) != 0) {
                 dbg(udev, "not in sys :%s\n", syspath);
                 return NULL;
         }
 
         /* path is not a root directory */
-        subdir = &syspath[len+1];
+        subdir = syspath + strlen(TEST_PREFIX "/sys");
         pos = strrchr(subdir, '/');
         if (pos == NULL || pos[1] == '\0' || pos < &subdir[2])
                 return NULL;
@@ -653,7 +651,7 @@ _public_ struct udev_device *udev_device_new_from_syspath(struct udev *udev, con
         util_strscpy(path, sizeof(path), syspath);
         util_resolve_sys_link(udev, path, sizeof(path));
 
-        if (strncmp(&path[len], "/devices/", 9) == 0) {
+        if (strncmp(path + strlen(TEST_PREFIX "/sys"), "/devices/", 9) == 0) {
                 char file[UTIL_PATH_SIZE];
 
                 /* all "devices" require a "uevent" file */
@@ -705,8 +703,8 @@ _public_ struct udev_device *udev_device_new_from_devnum(struct udev *udev, char
                 return NULL;
 
         /* use /sys/dev/{block,char}/<maj>:<min> link */
-        snprintf(path, sizeof(path), "%s/dev/%s/%u:%u",
-                 udev_get_sys_path(udev), type_str, major(devnum), minor(devnum));
+        snprintf(path, sizeof(path), TEST_PREFIX "/sys/dev/%s/%u:%u",
+                 type_str, major(devnum), minor(devnum));
         return udev_device_new_from_syspath(udev, path);
 }
 
@@ -782,32 +780,27 @@ struct udev_device *udev_device_new_from_id_filename(struct udev *udev, char *id
  **/
 _public_ struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname)
 {
-        char path_full[UTIL_PATH_SIZE];
-        char *path;
-        size_t l;
+        char path[UTIL_PATH_SIZE];
         struct stat statbuf;
 
-        path = path_full;
-        l = util_strpcpyl(&path, sizeof(path_full), udev_get_sys_path(udev), NULL);
-
         if (strcmp(subsystem, "subsystem") == 0) {
-                util_strscpyl(path, l, "/subsystem/", sysname, NULL);
-                if (stat(path_full, &statbuf) == 0)
+                util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/subsystem/", sysname, NULL);
+                if (stat(path, &statbuf) == 0)
                         goto found;
 
-                util_strscpyl(path, l, "/bus/", sysname, NULL);
-                if (stat(path_full, &statbuf) == 0)
+                util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/bus/", sysname, NULL);
+                if (stat(path, &statbuf) == 0)
                         goto found;
 
-                util_strscpyl(path, l, "/class/", sysname, NULL);
-                if (stat(path_full, &statbuf) == 0)
+                util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/class/", sysname, NULL);
+                if (stat(path, &statbuf) == 0)
                         goto found;
                 goto out;
         }
 
         if (strcmp(subsystem, "module") == 0) {
-                util_strscpyl(path, l, "/module/", sysname, NULL);
-                if (stat(path_full, &statbuf) == 0)
+                util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/module/", sysname, NULL);
+                if (stat(path, &statbuf) == 0)
                         goto found;
                 goto out;
         }
@@ -822,32 +815,32 @@ _public_ struct udev_device *udev_device_new_from_subsystem_sysname(struct udev
                         driver[0] = '\0';
                         driver = &driver[1];
 
-                        util_strscpyl(path, l, "/subsystem/", subsys, "/drivers/", driver, NULL);
-                        if (stat(path_full, &statbuf) == 0)
+                        util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/subsystem/", subsys, "/drivers/", driver, NULL);
+                        if (stat(path, &statbuf) == 0)
                                 goto found;
 
-                        util_strscpyl(path, l, "/bus/", subsys, "/drivers/", driver, NULL);
-                        if (stat(path_full, &statbuf) == 0)
+                        util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/bus/", subsys, "/drivers/", driver, NULL);
+                        if (stat(path, &statbuf) == 0)
                                 goto found;
                 }
                 goto out;
         }
 
-        util_strscpyl(path, l, "/subsystem/", subsystem, "/devices/", sysname, NULL);
-        if (stat(path_full, &statbuf) == 0)
+        util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/subsystem/", subsystem, "/devices/", sysname, NULL);
+        if (stat(path, &statbuf) == 0)
                 goto found;
 
-        util_strscpyl(path, l, "/bus/", subsystem, "/devices/", sysname, NULL);
-        if (stat(path_full, &statbuf) == 0)
+        util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/bus/", subsystem, "/devices/", sysname, NULL);
+        if (stat(path, &statbuf) == 0)
                 goto found;
 
-        util_strscpyl(path, l, "/class/", subsystem, "/", sysname, NULL);
-        if (stat(path_full, &statbuf) == 0)
+        util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/class/", subsystem, "/", sysname, NULL);
+        if (stat(path, &statbuf) == 0)
                 goto found;
 out:
         return NULL;
 found:
-        return udev_device_new_from_syspath(udev, path_full);
+        return udev_device_new_from_syspath(udev, path);
 }
 
 /**
@@ -893,7 +886,7 @@ static struct udev_device *device_new_from_parent(struct udev_device *udev_devic
         const char *subdir;
 
         util_strscpy(path, sizeof(path), udev_device->syspath);
-        subdir = &path[strlen(udev_get_sys_path(udev_device->udev))+1];
+        subdir = path + strlen(TEST_PREFIX "/sys/");
         for (;;) {
                 char *pos;
 
@@ -1438,7 +1431,7 @@ int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath
         udev_device->syspath = strdup(syspath);
         if (udev_device->syspath ==  NULL)
                 return -ENOMEM;
-        udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))];
+        udev_device->devpath = udev_device->syspath + strlen(TEST_PREFIX "/sys");
         udev_device_add_property(udev_device, "DEVPATH", udev_device->devpath);
 
         pos = strrchr(udev_device->syspath, '/');
@@ -1471,7 +1464,7 @@ int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode
 {
         free(udev_device->devnode);
         if (devnode[0] != '/') {
-                if (asprintf(&udev_device->devnode, "%s/%s", udev_get_dev_path(udev_device->udev), devnode) < 0)
+                if (asprintf(&udev_device->devnode, TEST_PREFIX "/dev/%s", devnode) < 0)
                         udev_device->devnode = NULL;
         } else {
                 udev_device->devnode = strdup(devnode);
diff --git a/src/libudev/libudev-enumerate.c b/src/libudev/libudev-enumerate.c
index 7b9a732ce6..ed4f62c66c 100644
--- a/src/libudev/libudev-enumerate.c
+++ b/src/libudev/libudev-enumerate.c
@@ -204,12 +204,10 @@ static bool devices_delay_end(struct udev *udev, const char *syspath)
                 "/block/dm-",
                 NULL
         };
-        size_t len;
         int i;
 
-        len = strlen(udev_get_sys_path(udev));
         for (i = 0; delay_device_list[i] != NULL; i++) {
-                if (strstr(&syspath[len], delay_device_list[i]) != NULL)
+                if (strstr(syspath + strlen("/sys"), delay_device_list[i]) != NULL)
                         return true;
         }
         return false;
@@ -624,7 +622,6 @@ static bool match_sysname(struct udev_enumerate *udev_enumerate, const char *sys
 static int scan_dir_and_add_devices(struct udev_enumerate *udev_enumerate,
                                     const char *basedir, const char *subdir1, const char *subdir2)
 {
-        struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
         char path[UTIL_PATH_SIZE];
         size_t l;
         char *s;
@@ -632,7 +629,7 @@ static int scan_dir_and_add_devices(struct udev_enumerate *udev_enumerate,
         struct dirent *dent;
 
         s = path;
-        l = util_strpcpyl(&s, sizeof(path), udev_get_sys_path(udev), "/", basedir, NULL);
+        l = util_strpcpyl(&s, sizeof(path), "/sys/", basedir, NULL);
         if (subdir1 != NULL)
                 l = util_strpcpyl(&s, l, "/", subdir1, NULL);
         if (subdir2 != NULL)
@@ -707,13 +704,11 @@ static bool match_subsystem(struct udev_enumerate *udev_enumerate, const char *s
 
 static int scan_dir(struct udev_enumerate *udev_enumerate, const char *basedir, const char *subdir, const char *subsystem)
 {
-        struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
-
         char path[UTIL_PATH_SIZE];
         DIR *dir;
         struct dirent *dent;
 
-        util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), "/", basedir, NULL);
+        util_strscpyl(path, sizeof(path), "/sys/", basedir, NULL);
         dir = opendir(path);
         if (dir == NULL)
                 return -1;
@@ -756,7 +751,6 @@ _public_ int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, c
 
 static int scan_devices_tags(struct udev_enumerate *udev_enumerate)
 {
-        struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
         struct udev_list_entry *list_entry;
 
         /* scan only tagged devices, use tags reverse-index, instead of searching all devices in /sys */
@@ -765,8 +759,7 @@ static int scan_devices_tags(struct udev_enumerate *udev_enumerate)
                 struct dirent *dent;
                 char path[UTIL_PATH_SIZE];
 
-                util_strscpyl(path, sizeof(path), udev_get_run_path(udev), "/tags/",
-                              udev_list_entry_get_name(list_entry), NULL);
+                util_strscpyl(path, sizeof(path), "/run/udev/tags/", udev_list_entry_get_name(list_entry), NULL);
                 dir = opendir(path);
                 if (dir == NULL)
                         continue;
@@ -861,12 +854,9 @@ static int scan_devices_children(struct udev_enumerate *enumerate)
 
 static int scan_devices_all(struct udev_enumerate *udev_enumerate)
 {
-        struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
-        char base[UTIL_PATH_SIZE];
         struct stat statbuf;
 
-        util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/subsystem", NULL);
-        if (stat(base, &statbuf) == 0) {
+        if (stat("/sys/subsystem", &statbuf) == 0) {
                 /* we have /subsystem/, forget all the old stuff */
                 scan_dir(udev_enumerate, "subsystem", "devices", NULL);
         } else {
@@ -907,8 +897,6 @@ _public_ int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate)
  **/
 _public_ int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate)
 {
-        struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
-        char base[UTIL_PATH_SIZE];
         struct stat statbuf;
         const char *subsysdir;
 
@@ -919,8 +907,7 @@ _public_ int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerat
         if (match_subsystem(udev_enumerate, "module"))
                 scan_dir_and_add_devices(udev_enumerate, "module", NULL, NULL);
 
-        util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/subsystem", NULL);
-        if (stat(base, &statbuf) == 0)
+        if (stat("/sys/subsystem", &statbuf) == 0)
                 subsysdir = "subsystem";
         else
                 subsysdir = "bus";
diff --git a/src/libudev/libudev-private.h b/src/libudev/libudev-private.h
index 91f92264dd..986c40c91e 100644
--- a/src/libudev/libudev-private.h
+++ b/src/libudev/libudev-private.h
@@ -19,9 +19,13 @@
 #include "macro.h"
 #include "libudev.h"
 
-#define READ_END 0
+#define READ_END  0
 #define WRITE_END 1
 
+#ifndef TEST_PREFIX
+#define TEST_PREFIX ""
+#endif
+
 /* avoid (sometimes expensive) calculations of parameters for debug output */
 #define udev_log_cond(udev, prio, arg...) \
   do { \
diff --git a/src/libudev/libudev-queue-private.c b/src/libudev/libudev-queue-private.c
index ca6d229a2c..f653e6db4c 100644
--- a/src/libudev/libudev-queue-private.c
+++ b/src/libudev/libudev-queue-private.c
@@ -101,14 +101,10 @@ struct udev_queue_export *udev_queue_export_unref(struct udev_queue_export *udev
 
 void udev_queue_export_cleanup(struct udev_queue_export *udev_queue_export)
 {
-        char filename[UTIL_PATH_SIZE];
-
         if (udev_queue_export == NULL)
                 return;
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.tmp", NULL);
-        unlink(filename);
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.bin", NULL);
-        unlink(filename);
+        unlink("/run/udev/queue.tmp");
+        unlink("/run/udev/queue.bin");
 }
 
 static int skip_to(FILE *file, long offset)
@@ -201,8 +197,6 @@ static int rebuild_queue_file(struct udev_queue_export *udev_queue_export)
 {
         unsigned long long int seqnum;
         struct queue_devpaths *devpaths = NULL;
-        char filename[UTIL_PATH_SIZE];
-        char filename_tmp[UTIL_PATH_SIZE];
         FILE *new_queue_file = NULL;
         unsigned int i;
 
@@ -218,8 +212,7 @@ static int rebuild_queue_file(struct udev_queue_export *udev_queue_export)
         }
 
         /* create new queue file */
-        util_strscpyl(filename_tmp, sizeof(filename_tmp), udev_get_run_path(udev_queue_export->udev), "/queue.tmp", NULL);
-        new_queue_file = fopen(filename_tmp, "w+");
+        new_queue_file = fopen("/run/udev/queue.tmp", "w+");
         if (new_queue_file == NULL)
                 goto error;
         seqnum = udev_queue_export->seqnum_max;
@@ -252,8 +245,7 @@ static int rebuild_queue_file(struct udev_queue_export *udev_queue_export)
                 goto error;
 
         /* rename the new file on top of the old one */
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.bin", NULL);
-        if (rename(filename_tmp, filename) != 0)
+        if (rename("/run/udev/queue.tmp", "/run/udev/queue.bin") != 0)
                 goto error;
 
         if (udev_queue_export->queue_file != NULL)
diff --git a/src/libudev/libudev-queue.c b/src/libudev/libudev-queue.c
index 0e0df8597d..ca23002307 100644
--- a/src/libudev/libudev-queue.c
+++ b/src/libudev/libudev-queue.c
@@ -121,14 +121,12 @@ _public_ struct udev *udev_queue_get_udev(struct udev_queue *udev_queue)
 
 unsigned long long int udev_get_kernel_seqnum(struct udev *udev)
 {
-        char filename[UTIL_PATH_SIZE];
         unsigned long long int seqnum;
         int fd;
         char buf[32];
         ssize_t len;
 
-        util_strscpyl(filename, sizeof(filename), udev_get_sys_path(udev), "/kernel/uevent_seqnum", NULL);
-        fd = open(filename, O_RDONLY|O_CLOEXEC);
+        fd = open("/sys/kernel/uevent_seqnum", O_RDONLY|O_CLOEXEC);
         if (fd < 0)
                 return 0;
         len = read(fd, buf, sizeof(buf));
@@ -210,7 +208,7 @@ static FILE *open_queue_file(struct udev_queue *udev_queue, unsigned long long i
         char filename[UTIL_PATH_SIZE];
         FILE *queue_file;
 
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue->udev), "/queue.bin", NULL);
+        util_strscpyl(filename, sizeof(filename), "/run/udev/queue.bin", NULL);
         queue_file = fopen(filename, "re");
         if (queue_file == NULL)
                 return NULL;
@@ -437,7 +435,7 @@ _public_ struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_qu
                 snprintf(seqnum_str, sizeof(seqnum_str), "%llu", seqnum);
 
                 s = syspath;
-                l = util_strpcpyl(&s, sizeof(syspath), udev_get_sys_path(udev_queue->udev), NULL);
+                l = util_strpcpy(&s, sizeof(syspath), "/sys");
                 len = udev_queue_read_devpath(queue_file, s, l);
                 if (len < 0)
                         break;
diff --git a/src/libudev/libudev-selinux-private.c b/src/libudev/libudev-selinux-private.c
index d68097f991..e9e65ad41d 100644
--- a/src/libudev/libudev-selinux-private.c
+++ b/src/libudev/libudev-selinux-private.c
@@ -29,7 +29,7 @@ void udev_selinux_init(struct udev *udev)
         dbg(udev, "selinux=%i\n", selinux_enabled);
         if (!selinux_enabled)
                 return;
-        matchpathcon_init_prefix(NULL, udev_get_dev_path(udev));
+        matchpathcon_init_prefix(NULL, TEST_PREFIX "/dev");
         if (getfscreatecon(&selinux_prev_scontext) < 0) {
                 err(udev, "getfscreatecon failed\n");
                 selinux_prev_scontext = NULL;
diff --git a/src/libudev/libudev.c b/src/libudev/libudev.c
index 74b53cbf1b..212c5fdd75 100644
--- a/src/libudev/libudev.c
+++ b/src/libudev/libudev.c
@@ -41,12 +41,6 @@ struct udev {
                        int priority, const char *file, int line, const char *fn,
                        const char *format, va_list args);
         void *userdata;
-        char *sys_path;
-        char *dev_path;
-        char *rules_path[4];
-        unsigned long long rules_path_ts[4];
-        int rules_path_count;
-        char *run_path;
         struct udev_list properties_list;
         int log_priority;
 };
@@ -100,14 +94,6 @@ _public_ void udev_set_userdata(struct udev *udev, void *userdata)
         udev->userdata = userdata;
 }
 
-static char *set_value(char **s, const char *v)
-{
-        free(*s);
-        *s = strdup(v);
-        util_remove_trailing_chars(*s, '/');
-        return *s;
-}
-
 /**
  * udev_new:
  *
@@ -123,7 +109,6 @@ _public_ struct udev *udev_new(void)
 {
         struct udev *udev;
         const char *env;
-        char *config_file = NULL;
         FILE *f;
 
         udev = calloc(1, sizeof(struct udev));
@@ -134,21 +119,7 @@ _public_ struct udev *udev_new(void)
         udev->log_priority = LOG_ERR;
         udev_list_init(udev, &udev->properties_list, true);
 
-        /* custom config file */
-        env = getenv("UDEV_CONFIG_FILE");
-        if (env != NULL) {
-                if (set_value(&config_file, env) == NULL)
-                        goto err;
-                udev_add_property(udev, "UDEV_CONFIG_FILE", config_file);
-        }
-
-        /* default config file */
-        if (config_file == NULL)
-                config_file = strdup(SYSCONFDIR "/udev/udev.conf");
-        if (config_file == NULL)
-                goto err;
-
-        f = fopen(config_file, "re");
+        f = fopen(SYSCONFDIR "/udev/udev.conf", "re");
         if (f != NULL) {
                 char line[UTIL_LINE_SIZE];
                 int line_nr = 0;
@@ -172,7 +143,7 @@ _public_ struct udev *udev_new(void)
                         /* split key/value */
                         val = strchr(key, '=');
                         if (val == NULL) {
-                                err(udev, "missing <key>=<value> in '%s'[%i], skip line\n", config_file, line_nr);
+                                err(udev, "missing <key>=<value> in " SYSCONFDIR "/udev/udev.conf[%i]; skip line\n", line_nr);
                                 continue;
                         }
                         val[0] = '\0';
@@ -204,7 +175,7 @@ _public_ struct udev *udev_new(void)
                         /* unquote */
                         if (val[0] == '"' || val[0] == '\'') {
                                 if (val[len-1] != val[0]) {
-                                        err(udev, "inconsistent quoting in '%s'[%i], skip line\n", config_file, line_nr);
+                                        err(udev, "inconsistent quoting in " SYSCONFDIR "/udev/udev.conf[%i]; skip line\n", line_nr);
                                         continue;
                                 }
                                 val[len-1] = '\0';
@@ -215,23 +186,6 @@ _public_ struct udev *udev_new(void)
                                 udev_set_log_priority(udev, util_log_priority(val));
                                 continue;
                         }
-                        if (strcmp(key, "udev_root") == 0) {
-                                set_value(&udev->dev_path, val);
-                                continue;
-                        }
-                        if (strcmp(key, "udev_run") == 0) {
-                                set_value(&udev->run_path, val);
-                                continue;
-                        }
-                        if (strcmp(key, "udev_sys") == 0) {
-                                set_value(&udev->sys_path, val);
-                                continue;
-                        }
-                        if (strcmp(key, "udev_rules") == 0) {
-                                set_value(&udev->rules_path[0], val);
-                                udev->rules_path_count = 1;
-                                continue;
-                        }
                 }
                 fclose(f);
         }
@@ -241,44 +195,7 @@ _public_ struct udev *udev_new(void)
         if (env != NULL)
                 udev_set_log_priority(udev, util_log_priority(env));
 
-        /* set defaults */
-        if (udev->dev_path == NULL)
-                if (set_value(&udev->dev_path, "/dev") == NULL)
-                        goto err;
-
-        if (udev->sys_path == NULL)
-                if (set_value(&udev->sys_path, "/sys") == NULL)
-                        goto err;
-
-        if (udev->run_path == NULL)
-                if (set_value(&udev->run_path, "/run/udev") == NULL)
-                        goto err;
-
-        if (udev->rules_path[0] == NULL) {
-                /* /usr/lib/udev -- system rules */
-                udev->rules_path[0] = strdup(UDEVLIBEXECDIR "/rules.d");
-                if (!udev->rules_path[0])
-                        goto err;
-
-                /* /run/udev -- runtime rules */
-                if (asprintf(&udev->rules_path[1], "%s/rules.d", udev->run_path) < 0)
-                        goto err;
-
-                /* /etc/udev -- local administration rules */
-                udev->rules_path[2] = strdup(SYSCONFDIR "/udev/rules.d");
-                if (!udev->rules_path[2])
-                        goto err;
-
-                udev->rules_path_count = 3;
-        }
-
-        free(config_file);
         return udev;
-err:
-        free(config_file);
-        err(udev, "context creation failed\n");
-        udev_unref(udev);
-        return NULL;
 }
 
 /**
@@ -313,12 +230,6 @@ _public_ void udev_unref(struct udev *udev)
         if (udev->refcount > 0)
                 return;
         udev_list_cleanup(&udev->properties_list);
-        free(udev->dev_path);
-        free(udev->sys_path);
-        free(udev->rules_path[0]);
-        free(udev->rules_path[1]);
-        free(udev->rules_path[2]);
-        free(udev->run_path);
         free(udev);
 }
 
@@ -372,21 +283,11 @@ _public_ void udev_set_log_priority(struct udev *udev, int priority)
         udev_add_property(udev, "UDEV_LOG", num);
 }
 
-int udev_get_rules_path(struct udev *udev, char **path[], unsigned long long *stamp_usec[])
-{
-        *path = udev->rules_path;
-        if (stamp_usec)
-                *stamp_usec = udev->rules_path_ts;
-        return udev->rules_path_count;
-}
-
 /**
  * udev_get_sys_path:
  * @udev: udev library context
  *
- * Retrieve the sysfs mount point. The default is "/sys". For
- * testing purposes, it can be overridden with udev_sys=
- * in the udev configuration file.
+ * Returns always "/sys"; deprecated, will be removed in a future version.
  *
  * Returns: the sys mount point
  **/
@@ -394,16 +295,14 @@ _public_ const char *udev_get_sys_path(struct udev *udev)
 {
         if (udev == NULL)
                 return NULL;
-        return udev->sys_path;
+        return "/sys";
 }
 
 /**
  * udev_get_dev_path:
  * @udev: udev library context
  *
- * Retrieve the device directory path. The default value is "/dev",
- * the actual value may be overridden in the udev configuration
- * file.
+ * Returns always "/dev"; deprecated, will be removed in a future version.
  *
  * Returns: the device directory path
  **/
@@ -411,14 +310,14 @@ _public_ const char *udev_get_dev_path(struct udev *udev)
 {
         if (udev == NULL)
                 return NULL;
-        return udev->dev_path;
+        return "/dev";
 }
 
 /**
  * udev_get_run_path:
  * @udev: udev library context
  *
- * Retrieve the udev runtime directory path. The default is "/run/udev".
+ * Returns always "/run/udev"; deprecated, will be removed in a future version.
  *
  * Returns: the runtime directory path
  **/
@@ -426,7 +325,7 @@ _public_ const char *udev_get_run_path(struct udev *udev)
 {
         if (udev == NULL)
                 return NULL;
-        return udev->run_path;
+        return "/run/udev";
 }
 
 struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value)