#include "libudev.h"
#include "libudev-private.h"
+/**
+ * SECTION:libudev-monitor
+ * @short_description: device event source
+ *
+ * Connects to a device event source.
+ */
+
+/**
+ * udev_monitor:
+ *
+ * Opaque object handling one event source.
+ */
struct udev_monitor {
struct udev *udev;
int refcount;
util_strscpy(&udev_monitor->sun.sun_path[1], sizeof(udev_monitor->sun.sun_path)-1, socket_path);
udev_monitor->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(socket_path)+1;
}
- udev_monitor->sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
+ udev_monitor->sock = socket(AF_LOCAL, SOCK_DGRAM|SOCK_CLOEXEC, 0);
if (udev_monitor->sock == -1) {
err(udev, "error getting socket: %m\n");
free(udev_monitor);
return NULL;
}
- util_set_fd_cloexec(udev_monitor->sock);
dbg(udev, "monitor %p created with '%s'\n", udev_monitor, socket_path);
return udev_monitor;
if (udev_monitor == NULL)
return NULL;
- udev_monitor->sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
+ udev_monitor->sock = socket(PF_NETLINK, SOCK_DGRAM|SOCK_CLOEXEC, NETLINK_KOBJECT_UEVENT);
if (udev_monitor->sock == -1) {
err(udev, "error getting socket: %m\n");
free(udev_monitor);
return NULL;
}
- util_set_fd_cloexec(udev_monitor->sock);
udev_monitor->snl.nl_family = AF_NETLINK;
udev_monitor->snl.nl_groups = group;
(*i)++;
}
+/**
+ * udev_monitor_filter_update:
+ * @udev_monitor: monitor
+ *
+ * Update the installed filter. This might only be needed, if the filter was removed or changed.
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ */
int udev_monitor_filter_update(struct udev_monitor *udev_monitor)
{
static struct sock_filter ins[256];
udev_monitor->snl_trusted_sender.nl_pid = sender->snl.nl_pid;
return 0;
}
-
+/**
+ * udev_monitor_enable_receiving:
+ * @udev_monitor: the monitor which should receive events
+ *
+ * Binds the @udev_monitor socket to the event source.
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ */
int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor)
{
int err;
/*
* get the address the kernel has assigned us
- * it is usually, but not neccessarily the pid
+ * it is usually, but not necessarily the pid
*/
addrlen = sizeof(struct sockaddr_nl);
err = getsockname(udev_monitor->sock, (struct sockaddr *)&snl, &addrlen);
ssize_t buflen;
ssize_t bufpos;
struct udev_monitor_netlink_header *nlh;
- int devpath_set = 0;
- int subsystem_set = 0;
- int action_set = 0;
- int maj = 0;
- int min = 0;
- int is_kernel = 0;
retry:
if (udev_monitor == NULL)
}
} else if (snl.nl_groups == UDEV_MONITOR_KERNEL) {
if (snl.nl_pid > 0) {
- info(udev_monitor->udev, "multicast kernel netlink message from pid %d ignored\n", snl.nl_pid);
+ info(udev_monitor->udev, "multicast kernel netlink message from pid %d ignored\n",
+ snl.nl_pid);
return NULL;
}
- is_kernel = 1;
}
}
}
udev_device = udev_device_new(udev_monitor->udev);
- if (udev_device == NULL) {
+ if (udev_device == NULL)
return NULL;
- }
+ udev_device_set_info_loaded(udev_device);
while (bufpos < buflen) {
char *key;
if (keylen == 0)
break;
bufpos += keylen + 1;
-
- if (strncmp(key, "DEVPATH=", 8) == 0) {
- char path[UTIL_PATH_SIZE];
-
- util_strscpyl(path, sizeof(path), udev_get_sys_path(udev_monitor->udev), &key[8], NULL);
- udev_device_set_syspath(udev_device, path);
- devpath_set = 1;
- } else if (strncmp(key, "SUBSYSTEM=", 10) == 0) {
- udev_device_set_subsystem(udev_device, &key[10]);
- subsystem_set = 1;
- } else if (strncmp(key, "DEVTYPE=", 8) == 0) {
- udev_device_set_devtype(udev_device, &key[8]);
- } else if (strncmp(key, "DEVNAME=", 8) == 0) {
- if (is_kernel)
- udev_device_set_knodename(udev_device, &key[8]);
- else
- udev_device_set_devnode(udev_device, &key[8]);
- } else if (strncmp(key, "DEVLINKS=", 9) == 0) {
- char devlinks[UTIL_PATH_SIZE];
- char *slink;
- char *next;
-
- util_strscpy(devlinks, sizeof(devlinks), &key[9]);
- slink = devlinks;
- next = strchr(slink, ' ');
- while (next != NULL) {
- next[0] = '\0';
- udev_device_add_devlink(udev_device, slink);
- slink = &next[1];
- next = strchr(slink, ' ');
- }
- if (slink[0] != '\0')
- udev_device_add_devlink(udev_device, slink);
- } else if (strncmp(key, "DRIVER=", 7) == 0) {
- udev_device_set_driver(udev_device, &key[7]);
- } else if (strncmp(key, "ACTION=", 7) == 0) {
- udev_device_set_action(udev_device, &key[7]);
- action_set = 1;
- } else if (strncmp(key, "MAJOR=", 6) == 0) {
- maj = strtoull(&key[6], NULL, 10);
- } else if (strncmp(key, "MINOR=", 6) == 0) {
- min = strtoull(&key[6], NULL, 10);
- } else if (strncmp(key, "DEVPATH_OLD=", 12) == 0) {
- udev_device_set_devpath_old(udev_device, &key[12]);
- } else if (strncmp(key, "SEQNUM=", 7) == 0) {
- udev_device_set_seqnum(udev_device, strtoull(&key[7], NULL, 10));
- } else if (strncmp(key, "TIMEOUT=", 8) == 0) {
- udev_device_set_timeout(udev_device, strtoull(&key[8], NULL, 10));
- } else {
- udev_device_add_property_from_string(udev_device, key);
- }
+ udev_device_add_property_from_string_parse(udev_device, key);
}
- if (!devpath_set || !subsystem_set || !action_set) {
- info(udev_monitor->udev, "missing values, skip\n");
+
+ if (udev_device_add_property_from_string_parse_finish(udev_device) < 0) {
+ info(udev_monitor->udev, "missing values, invalid device\n");
udev_device_unref(udev_device);
return NULL;
}
return NULL;
}
- if (maj > 0)
- udev_device_set_devnum(udev_device, makedev(maj, min));
- udev_device_set_info_loaded(udev_device);
return udev_device;
}
/*
* Use custom address for target, or the default one.
*
- * If we send to a muticast group, we will get
+ * If we send to a multicast group, we will get
* ECONNREFUSED, which is expected.
*/
if (destination != NULL)
return count;
}
+/**
+ * udev_monitor_filter_add_match_subsystem_devtype:
+ * @udev_monitor: the monitor
+ * @subsystem: the subsystem value to match the incoming devices against
+ * @devtype: the devtype value to match the incoming devices against
+ *
+ * The filter must be installed before the monitor is switched to listening mode.
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ */
int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, const char *subsystem, const char *devtype)
{
if (udev_monitor == NULL)
return 0;
}
+/**
+ * udev_monitor_filter_remove:
+ * @udev_monitor: monitor
+ *
+ * Remove all filters from monitor.
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ */
int udev_monitor_filter_remove(struct udev_monitor *udev_monitor)
{
static struct sock_fprog filter = { 0, NULL };
~ianmdlvl / elogind.git / blobdiff