#include <dirent.h>
#include <fcntl.h>
#include <ctype.h>
+#include <net/if.h>
#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <linux/sockios.h>
#include "libudev.h"
#include "libudev-private.h"
size_t monitor_buf_len;
struct udev_list_node devlinks_list;
struct udev_list_node properties_list;
+ struct udev_list_node sysattr_value_list;
struct udev_list_node sysattr_list;
struct udev_list_node tags_list;
unsigned long long int seqnum;
- int event_timeout;
+ unsigned long long int usec_initialized;
int timeout;
int devlink_priority;
int refcount;
bool db_loaded;
bool uevent_loaded;
bool is_initialized;
+ bool sysattr_list_read;
+ bool db_persist;
};
struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value)
return udev_list_entry_get_value(list_entry);
}
-int udev_device_read_db(struct udev_device *udev_device)
+int udev_device_read_db(struct udev_device *udev_device, const char *dbfile)
{
- const char *id;
char filename[UTIL_PATH_SIZE];
char line[UTIL_LINE_SIZE];
FILE *f;
- if (udev_device->db_loaded)
- return 0;
- udev_device->db_loaded = true;
+ /* providing a database file will always force-load it */
+ if (dbfile == NULL) {
+ const char *id;
- id = udev_device_get_id_filename(udev_device);
- if (id == NULL)
- return -1;
- util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/.udev/db/", id, NULL);
- f = fopen(filename, "re");
+ if (udev_device->db_loaded)
+ return 0;
+ udev_device->db_loaded = true;
+
+ 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);
+ dbfile = filename;
+ }
+
+ f = fopen(dbfile, "re");
if (f == NULL) {
- info(udev_device->udev, "no db file to read %s: %m\n", filename);
+ info(udev_device->udev, "no db file to read %s: %m\n", dbfile);
return -1;
}
udev_device->is_initialized = true;
case 'W':
udev_device_set_watch_handle(udev_device, atoi(val));
break;
+ case 'I':
+ udev_device_set_usec_initialized(udev_device, strtoull(val, NULL, 10));
+ break;
}
}
fclose(f);
udev_device->udev = udev;
udev_list_init(&udev_device->devlinks_list);
udev_list_init(&udev_device->properties_list);
+ udev_list_init(&udev_device->sysattr_value_list);
udev_list_init(&udev_device->sysattr_list);
udev_list_init(&udev_device->tags_list);
- udev_device->event_timeout = -1;
+ udev_device->timeout = -1;
udev_device->watch_handle = -1;
/* copy global properties */
udev_list_entry_foreach(list_entry, udev_get_properties_list_entry(udev))
if (sscanf(id, "%c%i:%i", &type, &maj, &min) != 3)
return NULL;
return udev_device_new_from_devnum(udev, type, makedev(maj, min));
+ case 'n': {
+ int sk;
+ struct ifreq ifr;
+ struct udev_device *dev;
+ int ifindex;
+
+ ifindex = strtoul(&id[1], NULL, 10);
+ if (ifindex <= 0)
+ return NULL;
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0)
+ return NULL;
+ memset(&ifr, 0x00, sizeof(struct ifreq));
+ ifr.ifr_ifindex = ifindex;
+ if (ioctl(sk, SIOCGIFNAME, &ifr) != 0) {
+ close(sk);
+ return NULL;
+ }
+ close(sk);
+
+ dev = udev_device_new_from_subsystem_sysname(udev, "net", ifr.ifr_name);
+ if (dev == NULL)
+ return NULL;
+ if (udev_device_get_ifindex(dev) == ifindex)
+ return dev;
+ udev_device_unref(dev);
+ return NULL;
+ }
case '+':
util_strscpy(subsys, sizeof(subsys), &id[1]);
sysname = strchr(subsys, ':');
free(udev_device->devtype);
udev_list_cleanup_entries(udev_device->udev, &udev_device->devlinks_list);
udev_list_cleanup_entries(udev_device->udev, &udev_device->properties_list);
+ udev_list_cleanup_entries(udev_device->udev, &udev_device->sysattr_value_list);
udev_list_cleanup_entries(udev_device->udev, &udev_device->sysattr_list);
udev_list_cleanup_entries(udev_device->udev, &udev_device->tags_list);
free(udev_device->action);
return NULL;
if (!udev_device->info_loaded) {
udev_device_read_uevent_file(udev_device);
- udev_device_read_db(udev_device);
+ udev_device_read_db(udev_device, NULL);
}
/* we might get called before we handled an event and have a db, use the kernel-provided name */
if (udev_device == NULL)
return NULL;
if (!udev_device->info_loaded)
- udev_device_read_db(udev_device);
+ udev_device_read_db(udev_device, NULL);
return udev_list_get_entry(&udev_device->devlinks_list);
}
return NULL;
if (!udev_device->info_loaded) {
udev_device_read_uevent_file(udev_device);
- udev_device_read_db(udev_device);
+ udev_device_read_db(udev_device, NULL);
}
if (!udev_device->devlinks_uptodate) {
char symlinks[UTIL_PATH_SIZE];
return udev_device->seqnum;
}
+/**
+ * udev_device_get_usec_since_initialized:
+ * @udev_device: udev device
+ *
+ * Return the number of microseconds passed since udev set up the
+ * device for the first time.
+ *
+ * This is only implemented for devices with need to store properties
+ * in the udev database. All other devices return 0 here.
+ *
+ * Returns: the number of microseconds since the device was first seen.
+ **/
+unsigned long long int udev_device_get_usec_since_initialized(struct udev_device *udev_device)
+{
+ unsigned long long now;
+
+ if (udev_device == NULL)
+ return 0;
+ if (!udev_device->info_loaded)
+ udev_device_read_db(udev_device, NULL);
+ if (udev_device->usec_initialized == 0)
+ return 0;
+ now = now_usec();
+ if (now == 0)
+ return 0;
+ return now - udev_device->usec_initialized;
+}
+
+unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device)
+{
+ return udev_device->usec_initialized;
+}
+
+void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized)
+{
+ udev_device->usec_initialized = usec_initialized;
+}
+
/**
* udev_device_get_sysattr_value:
* @udev_device: udev device
return NULL;
/* look for possibly already cached result */
- udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_device->sysattr_list)) {
+ udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_device->sysattr_value_list)) {
if (strcmp(udev_list_entry_get_name(list_entry), sysattr) == 0) {
dbg(udev_device->udev, "got '%s' (%s) from cache\n",
sysattr, udev_list_entry_get_value(list_entry));
util_strscpyl(path, sizeof(path), udev_device_get_syspath(udev_device), "/", sysattr, NULL);
if (lstat(path, &statbuf) != 0) {
dbg(udev_device->udev, "no attribute '%s', keep negative entry\n", path);
- udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, NULL, 0, 0);
+ udev_list_entry_add(udev_device->udev, &udev_device->sysattr_value_list, sysattr, NULL, 0, 0);
goto out;
}
if (pos != NULL) {
pos = &pos[1];
dbg(udev_device->udev, "cache '%s' with link value '%s'\n", sysattr, pos);
- list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, pos, 0, 0);
+ list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_value_list, sysattr, pos, 0, 0);
val = udev_list_entry_get_value(list_entry);
}
value[size] = '\0';
util_remove_trailing_chars(value, '\n');
dbg(udev_device->udev, "'%s' has attribute value '%s'\n", path, value);
- list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, value, 0, 0);
+ list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_value_list, sysattr, value, 0, 0);
val = udev_list_entry_get_value(list_entry);
out:
return val;
}
+static int udev_device_sysattr_list_read(struct udev_device *udev_device)
+{
+ struct dirent *dent;
+ DIR *dir;
+ int num = 0;
+
+ if (udev_device == NULL)
+ return -1;
+ if (udev_device->sysattr_list_read)
+ return 0;
+
+ dir = opendir(udev_device_get_syspath(udev_device));
+ if (!dir) {
+ dbg(udev_device->udev, "sysfs dir '%s' can not be opened\n",
+ udev_device_get_syspath(udev_device));
+ return -1;
+ }
+
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ char path[UTIL_PATH_SIZE];
+ struct stat statbuf;
+
+ /* only handle symlinks and regular files */
+ if (dent->d_type != DT_LNK && dent->d_type != DT_REG)
+ continue;
+
+ util_strscpyl(path, sizeof(path), udev_device_get_syspath(udev_device), "/", dent->d_name, NULL);
+ if (lstat(path, &statbuf) != 0)
+ continue;
+ if ((statbuf.st_mode & S_IRUSR) == 0)
+ continue;
+
+ udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list,
+ dent->d_name, NULL, 0, 0);
+ num++;
+ }
+
+ closedir(dir);
+ dbg(udev_device->udev, "found %d sysattrs for '%s'\n", num, udev_device_get_syspath(udev_device));
+ udev_device->sysattr_list_read = true;
+
+ return num;
+}
+
+/**
+ * udev_device_get_sysattr_list_entry:
+ * @udev_device: udev device
+ *
+ * Retrieve the list of available sysattrs, with value being empty;
+ * This just return all available sysfs attributes for a particular
+ * device without reading their values.
+ *
+ * Returns: the first entry of the property list
+ **/
+struct udev_list_entry *udev_device_get_sysattr_list_entry(struct udev_device *udev_device)
+{
+ if (!udev_device->sysattr_list_read) {
+ int ret;
+ ret = udev_device_sysattr_list_read(udev_device);
+ if (0 > ret)
+ return NULL;
+ }
+
+ return udev_list_get_entry(&udev_device->sysattr_list);
+}
+
int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath)
{
const char *pos;
* device node permissions and context, or has renamed a network
* device.
*
- * For now, this is only implemented for devices with a device node
+ * This is only implemented for devices with a device node
* or network interfaces. All other devices return 1 here.
*
* Returns: 1 if the device is set up. 0 otherwise.
int udev_device_get_is_initialized(struct udev_device *udev_device)
{
if (!udev_device->info_loaded)
- udev_device_read_db(udev_device);
+ udev_device_read_db(udev_device, NULL);
return udev_device->is_initialized;
}
struct udev_list_entry *list_entry;
if (!udev_device->info_loaded)
- udev_device_read_db(udev_device);
+ udev_device_read_db(udev_device, NULL);
list_entry = udev_device_get_tags_list_entry(udev_device);
list_entry = udev_list_entry_get_by_name(list_entry, tag);
if (list_entry != NULL)
}
int udev_device_set_timeout(struct udev_device *udev_device, int timeout)
-{
- udev_device->timeout = timeout;
- return 0;
-}
-int udev_device_get_event_timeout(struct udev_device *udev_device)
-{
- if (!udev_device->info_loaded)
- udev_device_read_db(udev_device);
- return udev_device->event_timeout;
-}
-
-int udev_device_set_event_timeout(struct udev_device *udev_device, int event_timeout)
{
char num[32];
- udev_device->event_timeout = event_timeout;
- snprintf(num, sizeof(num), "%u", event_timeout);
+ udev_device->timeout = timeout;
+ snprintf(num, sizeof(num), "%u", timeout);
udev_device_add_property(udev_device, "TIMEOUT", num);
return 0;
}
int udev_device_get_devlink_priority(struct udev_device *udev_device)
{
if (!udev_device->info_loaded)
- udev_device_read_db(udev_device);
+ udev_device_read_db(udev_device, NULL);
return udev_device->devlink_priority;
}
int udev_device_get_watch_handle(struct udev_device *udev_device)
{
if (!udev_device->info_loaded)
- udev_device_read_db(udev_device);
+ udev_device_read_db(udev_device, NULL);
return udev_device->watch_handle;
}
udev_device_add_property(udev_device, "IFINDEX", num);
return 0;
}
+
+bool udev_device_get_db_persist(struct udev_device *udev_device)
+{
+ return udev_device->db_persist;
+}
+
+void udev_device_set_db_persist(struct udev_device *udev_device)
+{
+ udev_device->db_persist = true;
+}
~ianmdlvl / elogind.git / blobdiff