chiark / gitweb /
libudev: enumerate - scan devices and subsystems, add subsystem and attribute filter
authorKay Sievers <kay.sievers@vrfy.org>
Tue, 30 Sep 2008 11:42:26 +0000 (13:42 +0200)
committerKay Sievers <kay.sievers@vrfy.org>
Tue, 30 Sep 2008 11:42:26 +0000 (13:42 +0200)
udev/lib/exported_symbols
udev/lib/libudev-device.c
udev/lib/libudev-enumerate.c
udev/lib/libudev.h
udev/lib/test-libudev.c
udev/udevadm-info.c

index 21b433e..edd3c76 100644 (file)
@@ -32,12 +32,17 @@ udev_device_get_devnum
 udev_device_get_seqnum
 udev_device_get_attr_value
 udev_enumerate_new
-udev_enumerate_scan_devices
-udev_enumerate_scan_subsystems
 udev_enumerate_ref
 udev_enumerate_unref
 udev_enumerate_get_udev
 udev_enumerate_get_list_entry
+udev_enumerate_add_match_subsystem
+udev_enumerate_add_nomatch_subsystem
+udev_enumerate_add_match_attr
+udev_enumerate_add_nomatch_attr
+udev_enumerate_scan_devices
+udev_enumerate_scan_subsystems
+udev_enumerate_add_device
 udev_monitor_new_from_socket
 udev_monitor_new_from_netlink
 udev_monitor_enable_receiving
index 4cdc957..f5465e9 100644 (file)
@@ -318,21 +318,19 @@ struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, de
 
        /* fallback to search sys devices for the major/minor */
        if (type == 'b')
-               udev_enumerate_scan_devices(udev_enumerate, "block", NULL);
+               udev_enumerate_add_match_subsystem(udev_enumerate, "block");
        else if (type == 'c')
-               udev_enumerate_scan_devices(udev_enumerate, "!block", NULL);
+               udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block");
+       udev_enumerate_scan_devices(udev_enumerate);
        udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) {
                struct udev_device *device_loop;
 
                device_loop = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry));
                if (device_loop != NULL) {
                        if (udev_device_get_devnum(device_loop) == devnum) {
-                               const char *subsystem;
-
-                               subsystem = udev_device_get_subsystem(device_loop);
-                               if (type == 'b' && strcmp(subsystem, "block") != 0)
+                               if (type == 'b' && strcmp(udev_device_get_subsystem(device_loop), "block") != 0)
                                        continue;
-                               if (type == 'c' && strcmp(subsystem, "block") == 0)
+                               if (type == 'c' && strcmp(udev_device_get_subsystem(device_loop), "block") == 0)
                                        continue;
                                device = device_loop;
                                break;
index 266164a..0377649 100644 (file)
@@ -24,6 +24,7 @@
 #include <errno.h>
 #include <string.h>
 #include <dirent.h>
+#include <fnmatch.h>
 #include <sys/stat.h>
 
 #include "libudev.h"
 struct udev_enumerate {
        struct udev *udev;
        int refcount;
+       struct list_node attr_match_list;
+       struct list_node attr_nomatch_list;
+       struct list_node subsystem_match_list;
+       struct list_node subsystem_nomatch_list;
        struct list_node devices_list;
 };
 
+/**
+ * udev_enumerate_new:
+ * @udev: udev library context
+ *
+ * Returns: an enumeration context
+ **/
+struct udev_enumerate *udev_enumerate_new(struct udev *udev)
+{
+       struct udev_enumerate *udev_enumerate;
+
+       udev_enumerate = malloc(sizeof(struct udev_enumerate));
+       if (udev_enumerate == NULL)
+               return NULL;
+       memset(udev_enumerate, 0x00, (sizeof(struct udev_enumerate)));
+       udev_enumerate->refcount = 1;
+       udev_enumerate->udev = udev;
+       list_init(&udev_enumerate->devices_list);
+       list_init(&udev_enumerate->attr_match_list);
+       list_init(&udev_enumerate->attr_nomatch_list);
+       list_init(&udev_enumerate->subsystem_match_list);
+       list_init(&udev_enumerate->subsystem_nomatch_list);
+       return udev_enumerate;
+}
+
 struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate)
 {
        if (udev_enumerate == NULL)
@@ -51,6 +80,10 @@ void udev_enumerate_unref(struct udev_enumerate *udev_enumerate)
        if (udev_enumerate->refcount > 0)
                return;
        list_cleanup(udev_enumerate->udev, &udev_enumerate->devices_list);
+       list_cleanup(udev_enumerate->udev, &udev_enumerate->attr_match_list);
+       list_cleanup(udev_enumerate->udev, &udev_enumerate->attr_nomatch_list);
+       list_cleanup(udev_enumerate->udev, &udev_enumerate->subsystem_match_list);
+       list_cleanup(udev_enumerate->udev, &udev_enumerate->subsystem_nomatch_list);
        free(udev_enumerate);
 }
 
@@ -68,22 +101,123 @@ struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *ude
        return list_get_entry(&udev_enumerate->devices_list);
 }
 
-static int devices_scan_subsystem(struct udev *udev,
-                                 const char *basedir, const char *subsystem, const char *subdir,
-                                 struct list_node *devices_list)
+int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem)
 {
+       if (udev_enumerate == NULL)
+               return -EINVAL;
+       if (subsystem == NULL)
+               return 0;
+       if (list_entry_add(udev_enumerate_get_udev(udev_enumerate),
+                          &udev_enumerate->subsystem_match_list, subsystem, NULL, 1, 0) == NULL)
+               return -ENOMEM;
+       return 0;
+}
+
+int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem)
+{
+       if (udev_enumerate == NULL)
+               return -EINVAL;
+       if (subsystem == NULL)
+               return 0;
+       if (list_entry_add(udev_enumerate_get_udev(udev_enumerate),
+                          &udev_enumerate->subsystem_nomatch_list, subsystem, NULL, 1, 0) == NULL)
+               return -ENOMEM;
+       return 0;
+}
+
+int udev_enumerate_add_match_attr(struct udev_enumerate *udev_enumerate, const char *attr, const char *value)
+{
+       if (udev_enumerate == NULL)
+               return -EINVAL;
+       if (attr == NULL)
+               return 0;
+       if (list_entry_add(udev_enumerate_get_udev(udev_enumerate),
+                          &udev_enumerate->attr_match_list, attr, value, 1, 0) == NULL)
+               return -ENOMEM;
+       return 0;
+}
+
+int udev_enumerate_add_nomatch_attr(struct udev_enumerate *udev_enumerate, const char *attr, const char *value)
+{
+       if (udev_enumerate == NULL)
+               return -EINVAL;
+       if (attr == NULL)
+               return 0;
+       if (list_entry_add(udev_enumerate_get_udev(udev_enumerate),
+                          &udev_enumerate->attr_nomatch_list, attr, value, 1, 0) == NULL)
+               return -ENOMEM;
+       return 0;
+}
+
+static int match_attr_value(struct udev *udev, const char *syspath, const char *attr, const char *match_val)
+{
+       struct udev_device *device;
+       const char *val = NULL;
+       int match = 0;
+
+       device = udev_device_new_from_syspath(udev, syspath);
+       if (device == NULL)
+               return -EINVAL;
+       val = udev_device_get_attr_value(device, attr);
+       if (val == NULL)
+               goto exit;
+       if (match_val == NULL) {
+               match = 1;
+               goto exit;
+       }
+       if (fnmatch(match_val, val, 0) == 0) {
+               match = 1;
+               goto exit;
+       }
+exit:
+       udev_device_unref(device);
+       return match;
+}
+
+static int match_attr(struct udev_enumerate *udev_enumerate, const char *syspath)
+{
+       struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
+       struct udev_list_entry *list_entry;
+
+       /* skip list */
+       udev_list_entry_foreach(list_entry, list_get_entry(&udev_enumerate->attr_nomatch_list)) {
+               if (match_attr_value(udev, syspath,
+                                    udev_list_entry_get_name(list_entry),
+                                    udev_list_entry_get_value(list_entry)))
+                       return 0;
+       }
+       /* include list */
+       if (list_get_entry(&udev_enumerate->attr_match_list) != NULL) {
+               udev_list_entry_foreach(list_entry, list_get_entry(&udev_enumerate->attr_match_list)) {
+                       /* anything that does not match, will make it FALSE */
+                       if (!match_attr_value(udev, syspath,
+                                             udev_list_entry_get_name(list_entry),
+                                             udev_list_entry_get_value(list_entry)))
+                               return 0;
+               }
+               return 1;
+       }
+       return 1;
+}
+
+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];
        DIR *dir;
        struct dirent *dent;
 
        util_strlcpy(path, udev_get_sys_path(udev), sizeof(path));
+       util_strlcat(path, "/", sizeof(path));
        util_strlcat(path, basedir, sizeof(path));
-       if (subsystem != NULL) {
+       if (subdir1 != NULL) {
                util_strlcat(path, "/", sizeof(path));
-               util_strlcat(path, subsystem, sizeof(path));
+               util_strlcat(path, subdir1, sizeof(path));
+       }
+       if (subdir2 != NULL) {
+               util_strlcat(path, "/", sizeof(path));
+               util_strlcat(path, subdir2, sizeof(path));
        }
-       if (subdir != NULL)
-               util_strlcat(path, subdir, sizeof(path));
        dir = opendir(path);
        if (dir == NULL)
                return -1;
@@ -102,47 +236,54 @@ static int devices_scan_subsystem(struct udev *udev,
                if (stat(filename, &statbuf) != 0)
                        continue;
                util_resolve_sys_link(udev, syspath, sizeof(syspath));
-               list_entry_add(udev, devices_list, syspath, NULL, 1, 1);
+               if (!match_attr(udev_enumerate, syspath))
+                       continue;
+               list_entry_add(udev, &udev_enumerate->devices_list, syspath, NULL, 1, 1);
        }
        closedir(dir);
        return 0;
 }
 
-static int devices_scan_subsystems(struct udev *udev,
-                                  const char *basedir, const char *subdir,
-                                  struct udev_list_entry *subsystem_include_list,
-                                  struct udev_list_entry *subsystem_exclude_list,
-                                  struct list_node *devices_list)
+static int match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem)
 {
-       if (subsystem_include_list != NULL) {
-               struct udev_list_entry *list_entry;
-
-               /* if list of subsystems to scan is given, just use this list */
-               udev_list_entry_foreach(list_entry, subsystem_include_list) {
-                       if (udev_list_entry_get_by_name(subsystem_exclude_list, udev_list_entry_get_name(list_entry)) != NULL)
-                                       continue;
-                       devices_scan_subsystem(udev, basedir, udev_list_entry_get_name(list_entry), subdir, devices_list);
-               }
-       } else {
-               char path[UTIL_PATH_SIZE];
-               DIR *dir;
-               struct dirent *dent;
-
-               /* if no list of subsystems to scan is given, scan all, and possible exclude some subsystems */
-               util_strlcpy(path, udev_get_sys_path(udev), sizeof(path));
-               util_strlcat(path, basedir, sizeof(path));
-               dir = opendir(path);
-               if (dir == NULL)
-                       return -1;
-               for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
-                       if (dent->d_name[0] == '.')
-                               continue;
-                       if (udev_list_entry_get_by_name(subsystem_exclude_list, dent->d_name) != NULL)
-                                       continue;
-                       devices_scan_subsystem(udev, basedir, dent->d_name, subdir, devices_list);
+       struct udev_list_entry *list_entry;
+
+       udev_list_entry_foreach(list_entry, list_get_entry(&udev_enumerate->subsystem_nomatch_list)) {
+               if (fnmatch(udev_list_entry_get_name(list_entry), subsystem, 0) == 0)
+                       return 0;
+       }
+       if (list_get_entry(&udev_enumerate->subsystem_match_list) != NULL) {
+               udev_list_entry_foreach(list_entry, list_get_entry(&udev_enumerate->subsystem_match_list)) {
+                       if (fnmatch(udev_list_entry_get_name(list_entry), subsystem, 0) == 0)
+                               return 1;
                }
-               closedir(dir);
+               return 0;
        }
+       return 1;
+}
+
+static int scan_dir(struct udev_enumerate *udev_enumerate, const char *basedir, const char *subdir, const char *match)
+{
+       struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
+
+       char path[UTIL_PATH_SIZE];
+       DIR *dir;
+       struct dirent *dent;
+
+       util_strlcpy(path, udev_get_sys_path(udev), sizeof(path));
+       util_strlcat(path, "/", sizeof(path));
+       util_strlcat(path, basedir, sizeof(path));
+       dir = opendir(path);
+       if (dir == NULL)
+               return -1;
+       for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+               if (dent->d_name[0] == '.')
+                       continue;
+               if (!match_subsystem(udev_enumerate, match != NULL ? match : dent->d_name))
+                       continue;
+               scan_dir_and_add_devices(udev_enumerate, basedir, dent->d_name, subdir);
+       }
+       closedir(dir);
        return 0;
 }
 
@@ -157,7 +298,6 @@ static int devices_delay(struct udev *udev, const char *syspath)
        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) {
                        info(udev, "delaying: %s\n", syspath);
@@ -167,103 +307,66 @@ static int devices_delay(struct udev *udev, const char *syspath)
        return 0;
 }
 
-/**
- * udev_enumerate_new:
- * @udev: udev library context
- *
- * Returns: an enumeration context
- **/
-struct udev_enumerate *udev_enumerate_new(struct udev *udev)
+int udev_enumerate_add_device(struct udev_enumerate *udev_enumerate, struct udev_device *udev_device)
 {
-       struct udev_enumerate *udev_enumerate;
+       struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
+       struct udev_list_entry *list_entry;
 
-       udev_enumerate = malloc(sizeof(struct udev_enumerate));
        if (udev_enumerate == NULL)
-               return NULL;
-       memset(udev_enumerate, 0x00, (sizeof(struct udev_enumerate)));
-       udev_enumerate->refcount = 1;
-       udev_enumerate->udev = udev;
-       list_init(&udev_enumerate->devices_list);
-       return udev_enumerate;
+               return -EINVAL;
+       if (udev_device == NULL)
+               return 0;
+       list_entry_add(udev,
+                      &udev_enumerate->devices_list,
+                      udev_device_get_syspath(udev_device), NULL, 1, 1);
+       /* sort delayed devices to the end of the list */
+       udev_list_entry_foreach(list_entry, list_get_entry(&udev_enumerate->devices_list)) {
+               if (devices_delay(udev, udev_list_entry_get_name(list_entry)))
+                       list_entry_move_to_end(list_entry);
+       }
+       return 0;
 }
 
 /**
  * udev_enumerate_scan_devices:
  * @udev_enumerate: udev enumeration context
- * @subsystem: the list of names of subsystems to look for devices
  *
- * Returns: 0 on success.
+ * Returns: a negative value on error.
  **/
-int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate, const char *subsystem, ...)
+int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate)
 {
        struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
-       va_list vargs;
-       const char *arg;
        char base[UTIL_PATH_SIZE];
        struct stat statbuf;
-       struct list_node subsystem_include_list;
-       struct list_node subsystem_exclude_list;
        struct udev_list_entry *list_entry;
 
        if (udev_enumerate == NULL)
                return -EINVAL;
-
-       va_start(vargs, subsystem);
-       list_init(&subsystem_include_list);
-       list_init(&subsystem_exclude_list);
-       for (arg = subsystem; arg != NULL; arg = va_arg(vargs, const char *)) {
-               if (arg[0] != '!')
-                       list_entry_add(udev, &subsystem_include_list, arg, NULL, 1, 0);
-               else
-                       list_entry_add(udev, &subsystem_exclude_list, &arg[1], NULL, 1, 0);
-       }
-       va_end(vargs);
-
        util_strlcpy(base, udev_get_sys_path(udev), sizeof(base));
        util_strlcat(base, "/subsystem", sizeof(base));
        if (stat(base, &statbuf) == 0) {
                /* we have /subsystem/, forget all the old stuff */
                info(udev, "searching '/subsystem/*/devices/*' dir\n");
-               devices_scan_subsystems(udev, "/subsystem", "/devices",
-                                       list_get_entry(&subsystem_include_list),
-                                       list_get_entry(&subsystem_exclude_list),
-                                       &udev_enumerate->devices_list);
+               scan_dir(udev_enumerate, "subsystem", "devices", NULL);
        } else {
                info(udev, "searching '/bus/*/devices/*' dir\n");
-               devices_scan_subsystems(udev, "/bus", "/devices",
-                                       list_get_entry(&subsystem_include_list),
-                                       list_get_entry(&subsystem_exclude_list),
-                                       &udev_enumerate->devices_list);
+               scan_dir(udev_enumerate, "bus", "devices", NULL);
                info(udev, "searching '/class/*' dir\n");
-               devices_scan_subsystems(udev, "/class", NULL,
-                                       list_get_entry(&subsystem_include_list),
-                                       list_get_entry(&subsystem_exclude_list),
-                                       &udev_enumerate->devices_list);
+               scan_dir(udev_enumerate, "class", NULL, NULL);
                /* if block isn't a class, scan /block/ */
                util_strlcpy(base, udev_get_sys_path(udev), sizeof(base));
                util_strlcat(base, "/class/block", sizeof(base));
                if (stat(base, &statbuf) != 0) {
-                       struct udev_list_entry *include_list = list_get_entry(&subsystem_include_list);
-                       struct udev_list_entry *exclude_list = list_get_entry(&subsystem_exclude_list);
-                       int include_block = (include_list == NULL || udev_list_entry_get_by_name(include_list, "block") != NULL);
-                       int exclude_block = (udev_list_entry_get_by_name(exclude_list, "block") != NULL);
-
-                       if (include_block && !exclude_block) {
+                       if (match_subsystem(udev_enumerate, "block")) {
                                info(udev, "searching '/block/*' dir\n");
                                /* scan disks */
-                               devices_scan_subsystem(udev, "/block", NULL, NULL, &udev_enumerate->devices_list);
+                               scan_dir_and_add_devices(udev_enumerate, "block", NULL, NULL);
                                /* scan partitions */
                                info(udev, "searching '/block/*/*' dir\n");
-                               devices_scan_subsystems(udev, "/block", NULL,
-                                                       NULL, NULL,
-                                                       &udev_enumerate->devices_list);
+                               scan_dir(udev_enumerate, "block", NULL, "block");
                        }
                }
        }
-
-       list_cleanup(udev, &subsystem_include_list);
-       list_cleanup(udev, &subsystem_exclude_list);
-
        /* sort delayed devices to the end of the list */
        udev_list_entry_foreach(list_entry, list_get_entry(&udev_enumerate->devices_list)) {
                if (devices_delay(udev, udev_list_entry_get_name(list_entry)))
@@ -276,7 +379,7 @@ int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate, const cha
  * udev_enumerate_scan_subsystems:
  * @udev_enumerate: udev enumeration context
  *
- * Returns: 0 on success.
+ * Returns: a negative value on error.
  **/
 int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate)
 {
@@ -287,18 +390,17 @@ int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate)
 
        if (udev_enumerate == NULL)
                return -EINVAL;
-
        util_strlcpy(base, udev_get_sys_path(udev), sizeof(base));
        util_strlcat(base, "/subsystem", sizeof(base));
        if (stat(base, &statbuf) == 0)
-               subsysdir = "/subsystem";
+               subsysdir = "subsystem";
        else
-               subsysdir = "/bus";
-       info(udev, "searching '%s/*' dir\n", subsysdir);
-       devices_scan_subsystem(udev, subsysdir, NULL, NULL, &udev_enumerate->devices_list);
+               subsysdir = "bus";
+       if (match_subsystem(udev_enumerate, "subsystem")) {
+               info(udev, "searching '%s/*' dir\n", subsysdir);
+               scan_dir_and_add_devices(udev_enumerate, subsysdir, NULL, NULL);
+       }
        info(udev, "searching '%s/*/drivers/*' dir\n", subsysdir);
-       devices_scan_subsystems(udev, subsysdir, "/drivers",
-                               NULL, NULL,
-                               &udev_enumerate->devices_list);
+       scan_dir(udev_enumerate, subsysdir, "drivers", "drivers");
        return 0;
 }
index 427fed7..49d24f1 100644 (file)
@@ -98,7 +98,12 @@ extern struct udev_enumerate *udev_enumerate_new(struct udev *udev);
 extern struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate);
 extern struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate);
 extern void udev_enumerate_unref(struct udev_enumerate *udev_enumerate);
-extern int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate, const char *subsystem, ...);
+extern int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem);
+extern int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem);
+extern int udev_enumerate_add_match_attr(struct udev_enumerate *udev_enumerate, const char *attr, const char *value);
+extern int udev_enumerate_add_nomatch_attr(struct udev_enumerate *udev_enumerate, const char *attr, const char *value);
+extern int udev_enumerate_add_device(struct udev_enumerate *udev_enumerate, struct udev_device *udev_device);
+extern int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate);
 extern int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate);
 extern struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate);
 
index 0f45413..5e9897c 100644 (file)
@@ -309,7 +309,8 @@ int main(int argc, char *argv[], char *envp[])
        udev_enumerate = udev_enumerate_new(udev);
        if (udev_enumerate == NULL)
                return -1;
-       udev_enumerate_scan_devices(udev_enumerate, subsystem, NULL);
+       udev_enumerate_add_match_subsystem(udev_enumerate, subsystem);
+       udev_enumerate_scan_devices(udev_enumerate);
        test_enumerate_print_list(udev_enumerate);
        udev_enumerate_unref(udev_enumerate);
 
@@ -317,7 +318,8 @@ int main(int argc, char *argv[], char *envp[])
        udev_enumerate = udev_enumerate_new(udev);
        if (udev_enumerate == NULL)
                return -1;
-       udev_enumerate_scan_devices(udev_enumerate, "block", NULL);
+       udev_enumerate_add_match_subsystem(udev_enumerate,"block");
+       udev_enumerate_scan_devices(udev_enumerate);
        test_enumerate_print_list(udev_enumerate);
        udev_enumerate_unref(udev_enumerate);
 
@@ -325,7 +327,8 @@ int main(int argc, char *argv[], char *envp[])
        udev_enumerate = udev_enumerate_new(udev);
        if (udev_enumerate == NULL)
                return -1;
-       udev_enumerate_scan_devices(udev_enumerate, "!block", NULL);
+       udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block");
+       udev_enumerate_scan_devices(udev_enumerate);
        test_enumerate_print_list(udev_enumerate);
        udev_enumerate_unref(udev_enumerate);
 
@@ -333,7 +336,10 @@ int main(int argc, char *argv[], char *envp[])
        udev_enumerate = udev_enumerate_new(udev);
        if (udev_enumerate == NULL)
                return -1;
-       udev_enumerate_scan_devices(udev_enumerate, "pci", "mem", "vc", NULL);
+       udev_enumerate_add_match_subsystem(udev_enumerate, "pci");
+       udev_enumerate_add_match_subsystem(udev_enumerate, "mem");
+       udev_enumerate_add_match_subsystem(udev_enumerate, "vc");
+       udev_enumerate_scan_devices(udev_enumerate);
        test_enumerate_print_list(udev_enumerate);
        udev_enumerate_unref(udev_enumerate);
 
index 624fb01..c2ff0bb 100644 (file)
@@ -190,7 +190,7 @@ static int export_devices(struct udev *udev)
        udev_enumerate = udev_enumerate_new(udev);
        if (udev_enumerate == NULL)
                return -1;
-       udev_enumerate_scan_devices(udev_enumerate, NULL);
+       udev_enumerate_scan_devices(udev_enumerate);
        udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) {
                struct udev_device *device;