*
* Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
*
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*/
#include <stdio.h>
int refcount;
int sock;
struct sockaddr_nl snl;
+ struct sockaddr_nl snl_peer;
struct sockaddr_un sun;
socklen_t addrlen;
};
* socket will be used.
*
* The initial refcount is 1, and needs to be decremented to
- * release the ressources of the udev monitor.
+ * release the resources of the udev monitor.
*
* Returns: a new udev monitor, or #NULL, in case of an error
**/
return NULL;
if (socket_path == NULL)
return NULL;
- udev_monitor = malloc(sizeof(struct udev_monitor));
+ udev_monitor = calloc(1, sizeof(struct udev_monitor));
if (udev_monitor == NULL)
return NULL;
- memset(udev_monitor, 0x00, sizeof(struct udev_monitor));
udev_monitor->refcount = 1;
udev_monitor->udev = udev;
udev_monitor->sun.sun_family = AF_LOCAL;
- if (udev_monitor->sun.sun_path[0] == '@') {
+ if (socket_path[0] == '@') {
/* translate leading '@' to abstract namespace */
util_strlcpy(udev_monitor->sun.sun_path, socket_path, sizeof(udev_monitor->sun.sun_path));
udev_monitor->sun.sun_path[0] = '\0';
udev_monitor->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(socket_path);
- } else if (stat(udev_monitor->sun.sun_path, &statbuf) == 0 && S_ISSOCK(statbuf.st_mode)) {
+ } else if (stat(socket_path, &statbuf) == 0 && S_ISSOCK(statbuf.st_mode)) {
/* existing socket file */
util_strlcpy(udev_monitor->sun.sun_path, socket_path, sizeof(udev_monitor->sun.sun_path));
udev_monitor->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(socket_path);
free(udev_monitor);
return NULL;
}
- info(udev, "monitor %p created with '%s'\n", udev_monitor, socket_path);
+ dbg(udev, "monitor %p created with '%s'\n", udev_monitor, socket_path);
return udev_monitor;
}
-struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev)
+struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, unsigned int group)
{
struct udev_monitor *udev_monitor;
if (udev == NULL)
return NULL;
- udev_monitor = malloc(sizeof(struct udev_monitor));
+ udev_monitor = calloc(1, sizeof(struct udev_monitor));
if (udev_monitor == NULL)
return NULL;
- memset(udev_monitor, 0x00, sizeof(struct udev_monitor));
udev_monitor->refcount = 1;
udev_monitor->udev = udev;
}
udev_monitor->snl.nl_family = AF_NETLINK;
- udev_monitor->snl.nl_pid = getpid();
- udev_monitor->snl.nl_groups = 1;
+ udev_monitor->snl.nl_groups = group;
+ udev_monitor->snl_peer.nl_family = AF_NETLINK;
+ udev_monitor->snl_peer.nl_groups = UDEV_MONITOR_UDEV;
- info(udev, "monitor %p created with NETLINK_KOBJECT_UEVENT\n", udev_monitor);
+ dbg(udev, "monitor %p created with NETLINK_KOBJECT_UEVENT (%u)\n", udev_monitor, group);
return udev_monitor;
}
const int on = 1;
if (udev_monitor->snl.nl_family != 0) {
- err = bind(udev_monitor->sock, (struct sockaddr *)&udev_monitor->snl, sizeof(struct sockaddr_nl));
+ err = bind(udev_monitor->sock,
+ (struct sockaddr *)&udev_monitor->snl, sizeof(struct sockaddr_nl));
if (err < 0) {
err(udev_monitor->udev, "bind failed: %m\n");
return err;
}
- info(udev_monitor->udev, "monitor %p listening on netlink\n", udev_monitor);
+ dbg(udev_monitor->udev, "monitor %p listening on netlink\n", udev_monitor);
} else if (udev_monitor->sun.sun_family != 0) {
- err = bind(udev_monitor->sock, (struct sockaddr *)&udev_monitor->sun, udev_monitor->addrlen);
+ err = bind(udev_monitor->sock,
+ (struct sockaddr *)&udev_monitor->sun, udev_monitor->addrlen);
if (err < 0) {
err(udev_monitor->udev, "bind failed: %m\n");
return err;
}
/* enable receiving of the sender credentials */
setsockopt(udev_monitor->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
- info(udev_monitor->udev, "monitor %p listening on socket\n", udev_monitor);
+ dbg(udev_monitor->udev, "monitor %p listening on socket\n", udev_monitor);
}
return 0;
}
+int udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_monitor, int size)
+{
+ if (udev_monitor == NULL)
+ return -1;
+ return setsockopt(udev_monitor->sock, SOL_SOCKET, SO_RCVBUFFORCE, &size, sizeof(size));
+}
+
/**
* udev_monitor_ref:
* @udev_monitor: udev monitor
* @udev_monitor: udev monitor
*
* Drop a reference ofa udev monitor. If the refcount reaches zero,
- * the bound socket will be closed, and the ressources of the monitor
+ * the bound socket will be closed, and the resources of the monitor
* will be released.
*
**/
return;
if (udev_monitor->sock >= 0)
close(udev_monitor->sock);
- info(udev_monitor->udev, "monitor %p released\n", udev_monitor);
+ dbg(udev_monitor->udev, "monitor %p released\n", udev_monitor);
free(udev_monitor);
}
* device, fill in the received data, and return the device.
*
* Only socket connections with uid=0 are accepted. The caller
- * needs to make sure, that there is data to read from the socket,
- * the call will block until the socket becomes readable.
+ * needs to make sure that there is data to read from the socket.
+ * The call will block until the socket becomes readable.
*
* The initial refcount is 1, and needs to be decremented to
- * release the ressources of the udev device.
+ * release the resources of the udev device.
*
* Returns: a new udev device, or #NULL, in case of an error
**/
char cred_msg[CMSG_SPACE(sizeof(struct ucred))];
char buf[4096];
size_t bufpos;
+ int devpath_set = 0;
+ int subsystem_set = 0;
+ int action_set = 0;
int maj = 0;
int min = 0;
util_strlcpy(path, udev_get_sys_path(udev_monitor->udev), sizeof(path));
util_strlcat(path, &key[8], sizeof(path));
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) {
udev_device_set_devnode(udev_device, &key[8]);
} else if (strncmp(key, "DEVLINKS=", 9) == 0) {
- char *slink = &key[9];
- char *next = strchr(slink, ' ');
+ char devlinks[UTIL_PATH_SIZE];
+ char *slink;
+ char *next;
+ util_strlcpy(devlinks, &key[9], sizeof(devlinks));
+ slink = devlinks;
+ next = strchr(slink, ' ');
while (next != NULL) {
next[0] = '\0';
udev_device_add_devlink(udev_device, slink);
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) {
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));
- }
- if (strncmp(key, "PHYSDEV", 7) == 0)
+ } else if (strncmp(key, "PHYSDEV", 7) == 0) {
+ /* skip deprecated values */
continue;
- udev_device_add_property_from_string(udev_device, key);
+ } else {
+ udev_device_add_property_from_string(udev_device, key);
+ }
}
- udev_device_set_devnum(udev_device, makedev(maj, min));
-
+ if (!devpath_set || !subsystem_set || !action_set) {
+ info(udev_monitor->udev, "missing values, skip\n");
+ udev_device_unref(udev_device);
+ return NULL;
+ }
+ if (maj > 0)
+ udev_device_set_devnum(udev_device, makedev(maj, min));
udev_device_set_info_loaded(udev_device);
return udev_device;
}
int udev_monitor_send_device(struct udev_monitor *udev_monitor, struct udev_device *udev_device)
{
- const char *action;
- struct udev_list_entry *list_entry;
- char buf[4096];
- size_t bufpos;
+ const char *buf;
+ ssize_t len;
ssize_t count;
- action = udev_device_get_action(udev_device);
- if (action == NULL)
- return -EINVAL;
- bufpos = snprintf(buf, sizeof(buf), "%s@%s", action, udev_device_get_devpath(udev_device));
- bufpos++;
- udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
- bufpos += util_strlcpy(&buf[bufpos],
- udev_list_entry_get_name(list_entry),
- sizeof(buf) - bufpos);
- bufpos++;
+ len = udev_device_get_properties_monitor_buf(udev_device, &buf);
+ if (len < 32)
+ return -1;
+ if (udev_monitor->sun.sun_family != 0) {
+ count = sendto(udev_monitor->sock,
+ buf, len, 0,
+ (struct sockaddr *)&udev_monitor->sun,
+ udev_monitor->addrlen);
+ } else {
+ /* no destination besides the muticast group, we will always get -1 ECONNREFUSED */
+ count = sendto(udev_monitor->sock,
+ buf, len, 0,
+ (struct sockaddr *)&udev_monitor->snl_peer,
+ sizeof(struct sockaddr_nl));
}
- count = sendto(udev_monitor->sock,
- &buf, bufpos, 0,
- (struct sockaddr *)&udev_monitor->sun, udev_monitor->addrlen);
info(udev_monitor->udev, "passed %zi bytes to monitor %p, \n", count, udev_monitor);
return count;
}
~ianmdlvl / elogind.git / blobdiff