lib/libudev.h \
lib/libudev-private.h \
lib/libudev.c \
- lib/libudev-utils.c
+ lib/libudev-utils.c \
+ lib/libudev-ctrl.c
if USE_SELINUX
udevd_SOURCES = \
$(common_files) \
- udevd.h \
udevd.c
udevd_LDADD = \
udevadm_SOURCES = \
$(common_files) \
- udev-control.c \
udevadm.c \
udevadm-info.c \
udevadm-control.c \
libudev.h
libudev_la_SOURCES =\
+ exported_symbools \
libudev-private.h \
libudev.c \
libudev-utils.c \
libudev-device.c \
libudev-enumerate.c \
+ libudev-ctrl.c \
libudev-monitor.c \
../list.h \
../udev.h \
udev_device_get_properties
udev_devices_enumerate
udev_monitor_new_from_socket
+udev_monitor_enable_receiving
udev_monitor_ref
udev_monitor_unref
udev_monitor_get_udev
udev_monitor_get_fd
-udev_monitor_get_device
+udev_monitor_receive_device
--- /dev/null
+/*
+ * Copyright (C) 2005-2008 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 version 2 of the License.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include "../udev.h"
+#include "libudev.h"
+#include "libudev-private.h"
+
+#define UDEV_CTRL_MAGIC "udevd-128"
+
+enum udev_ctrl_msg_type {
+ UDEV_CTRL_UNKNOWN,
+ UDEV_CTRL_SET_LOG_LEVEL,
+ UDEV_CTRL_STOP_EXEC_QUEUE,
+ UDEV_CTRL_START_EXEC_QUEUE,
+ UDEV_CTRL_RELOAD_RULES,
+ UDEV_CTRL_SET_ENV,
+ UDEV_CTRL_SET_MAX_CHILDS,
+ UDEV_CTRL_SET_MAX_CHILDS_RUNNING,
+};
+
+struct ctrl_msg {
+ char magic[32];
+ enum udev_ctrl_msg_type type;
+ union {
+ int intval;
+ char buf[256];
+ };
+};
+
+struct udev_ctrl_msg {
+ int refcount;
+ struct udev_ctrl *uctrl;
+ struct ctrl_msg ctrl_msg;
+};
+
+struct udev_ctrl {
+ int refcount;
+ struct udev *udev;
+ int sock;
+ struct sockaddr_un saddr;
+ socklen_t addrlen;
+};
+
+struct udev_ctrl *udev_ctrl_new_from_socket(struct udev *udev, const char *socket_path)
+{
+ struct udev_ctrl *uctrl;
+
+ uctrl = malloc(sizeof(struct udev_ctrl));
+ if (uctrl == NULL)
+ return NULL;
+ memset(uctrl, 0x00, sizeof(struct udev_ctrl));
+ uctrl->refcount = 1;
+ uctrl->udev = udev;
+
+ uctrl->sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
+ if (uctrl->sock < 0) {
+ err(udev, "error getting socket: %s\n", strerror(errno));
+ udev_ctrl_unref(uctrl);
+ return NULL;
+ }
+
+ uctrl->saddr.sun_family = AF_LOCAL;
+ strcpy(uctrl->saddr.sun_path, socket_path);
+ uctrl->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(uctrl->saddr.sun_path);
+ /* translate leading '@' to abstract namespace */
+ if (uctrl->saddr.sun_path[0] == '@')
+ uctrl->saddr.sun_path[0] = '\0';
+
+ return uctrl;
+}
+
+int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl)
+{
+ int err;
+ const int feature_on = 1;
+
+ err= bind(uctrl->sock, (struct sockaddr *)&uctrl->saddr, uctrl->addrlen);
+ if (err < 0) {
+ err(uctrl->udev, "bind failed: %s\n", strerror(errno));
+ return err;
+ }
+
+ /* enable receiving of the sender credentials */
+ setsockopt(uctrl->sock, SOL_SOCKET, SO_PASSCRED, &feature_on, sizeof(feature_on));
+ return 0;
+}
+
+struct udev *udev_ctrl_get_udev(struct udev_ctrl *uctrl)
+{
+ return uctrl->udev;
+}
+
+struct udev_ctrl *udev_ctrl_ref(struct udev_ctrl *uctrl)
+{
+ if (uctrl == NULL)
+ return NULL;
+ uctrl->refcount++;
+ return uctrl;
+}
+
+void udev_ctrl_unref(struct udev_ctrl *uctrl)
+{
+ if (uctrl == NULL)
+ return;
+ uctrl->refcount--;
+ if (uctrl->refcount > 0)
+ return;
+ if (uctrl->sock >= 0)
+ close(uctrl->sock);
+ free(uctrl);
+}
+
+int udev_ctrl_get_fd(struct udev_ctrl *uctrl)
+{
+ if (uctrl == NULL)
+ return -1;
+ return uctrl->sock;
+}
+
+static int ctrl_send(struct udev_ctrl *uctrl, enum udev_ctrl_msg_type type, int intval, const char *buf)
+{
+ struct ctrl_msg ctrl_msg;
+ int err;
+
+ memset(&ctrl_msg, 0x00, sizeof(struct ctrl_msg));
+ strcpy(ctrl_msg.magic, UDEV_CTRL_MAGIC);
+ ctrl_msg.type = type;
+
+ if (buf != NULL)
+ strlcpy(ctrl_msg.buf, buf, sizeof(ctrl_msg.buf));
+ else
+ ctrl_msg.intval = intval;
+
+ err = sendto(uctrl->sock, &ctrl_msg, sizeof(ctrl_msg), 0, (struct sockaddr *)&uctrl->saddr, uctrl->addrlen);
+ if (err == -1) {
+ err(uctrl->udev, "error sending message: %s\n", strerror(errno));
+ }
+ return err;
+}
+
+int udev_ctrl_send_set_log_level(struct udev_ctrl *uctrl, int priority)
+{
+ ctrl_send(uctrl, UDEV_CTRL_SET_LOG_LEVEL, priority, NULL);
+ return 0;
+}
+
+int udev_ctrl_send_stop_exec_queue(struct udev_ctrl *uctrl)
+{
+ ctrl_send(uctrl, UDEV_CTRL_STOP_EXEC_QUEUE, 0, NULL);
+ return 0;
+}
+
+int udev_ctrl_send_start_exec_queue(struct udev_ctrl *uctrl)
+{
+ ctrl_send(uctrl, UDEV_CTRL_START_EXEC_QUEUE, 0, NULL);
+ return 0;
+}
+
+int udev_ctrl_send_reload_rules(struct udev_ctrl *uctrl)
+{
+ ctrl_send(uctrl, UDEV_CTRL_RELOAD_RULES, 0, NULL);
+ return 0;
+}
+
+int udev_ctrl_send_set_env(struct udev_ctrl *uctrl, const char *key)
+{
+ ctrl_send(uctrl, UDEV_CTRL_SET_ENV, 0, optarg);
+ return 0;
+}
+
+int udev_ctrl_send_set_max_childs(struct udev_ctrl *uctrl, int count)
+{
+ ctrl_send(uctrl, UDEV_CTRL_SET_MAX_CHILDS, count, NULL);
+ return 0;
+}
+
+int udev_ctrl_send_set_max_childs_running(struct udev_ctrl *uctrl, int count)
+{
+ ctrl_send(uctrl, UDEV_CTRL_SET_MAX_CHILDS_RUNNING, count, NULL);
+ return 0;
+}
+
+struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl *uctrl)
+{
+ struct udev_ctrl_msg *uctrl_msg;
+ ssize_t size;
+ struct msghdr smsg;
+ struct cmsghdr *cmsg;
+ struct iovec iov;
+ struct ucred *cred;
+ char cred_msg[CMSG_SPACE(sizeof(struct ucred))];
+
+ uctrl_msg = malloc(sizeof(struct udev_ctrl_msg));
+ if (uctrl_msg == NULL)
+ return NULL;
+ memset(uctrl_msg, 0x00, sizeof(struct udev_ctrl_msg));
+ uctrl_msg->refcount = 1;
+ uctrl_msg->uctrl = uctrl;
+
+ iov.iov_base = &uctrl_msg->ctrl_msg;
+ iov.iov_len = sizeof(struct udev_ctrl_msg);
+
+ memset(&smsg, 0x00, sizeof(struct msghdr));
+ smsg.msg_iov = &iov;
+ smsg.msg_iovlen = 1;
+ smsg.msg_control = cred_msg;
+ smsg.msg_controllen = sizeof(cred_msg);
+
+ size = recvmsg(uctrl->sock, &smsg, 0);
+ if (size < 0) {
+ err(uctrl->udev, "unable to receive user udevd message: %s\n", strerror(errno));
+ goto err;
+ }
+ cmsg = CMSG_FIRSTHDR(&smsg);
+ cred = (struct ucred *) CMSG_DATA(cmsg);
+
+ if (cmsg == NULL || cmsg->cmsg_type != SCM_CREDENTIALS) {
+ err(uctrl->udev, "no sender credentials received, message ignored\n");
+ goto err;
+ }
+
+ if (cred->uid != 0) {
+ err(uctrl->udev, "sender uid=%i, message ignored\n", cred->uid);
+ goto err;
+ }
+
+ if (strncmp(uctrl_msg->ctrl_msg.magic, UDEV_CTRL_MAGIC, sizeof(UDEV_CTRL_MAGIC)) != 0 ) {
+ err(uctrl->udev, "message magic '%s' doesn't match, ignore it\n", uctrl_msg->ctrl_msg.magic);
+ goto err;
+ }
+
+ info(uctrl->udev, "created ctrl_msg %p (%i)\n", uctrl_msg, uctrl_msg->ctrl_msg.type);
+ return uctrl_msg;
+err:
+ udev_ctrl_msg_unref(uctrl_msg);
+ return NULL;
+}
+
+struct udev_ctrl_msg *udev_ctrl_msg_ref(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg == NULL)
+ return NULL;
+ ctrl_msg->refcount++;
+ return ctrl_msg;
+}
+
+void udev_ctrl_msg_unref(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg == NULL)
+ return;
+ ctrl_msg->refcount--;
+ if (ctrl_msg->refcount > 0)
+ return;
+ info(ctrl_msg->uctrl->udev, "release ctrl_msg %p\n", ctrl_msg);
+ free(ctrl_msg);
+}
+
+int udev_ctrl_get_set_log_level(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg->ctrl_msg.type == UDEV_CTRL_SET_LOG_LEVEL)
+ return ctrl_msg->ctrl_msg.intval;
+ return -1;
+}
+
+int udev_ctrl_get_stop_exec_queue(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg->ctrl_msg.type == UDEV_CTRL_STOP_EXEC_QUEUE)
+ return 1;
+ return -1;
+}
+
+int udev_ctrl_get_start_exec_queue(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg->ctrl_msg.type == UDEV_CTRL_START_EXEC_QUEUE)
+ return 1;
+ return -1;
+}
+
+int udev_ctrl_get_reload_rules(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg->ctrl_msg.type == UDEV_CTRL_RELOAD_RULES)
+ return 1;
+ return -1;
+}
+
+const char *udev_ctrl_get_set_env(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg->ctrl_msg.type == UDEV_CTRL_SET_ENV)
+ return ctrl_msg->ctrl_msg.buf;
+ return NULL;
+}
+
+int udev_ctrl_get_set_max_childs(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg->ctrl_msg.type == UDEV_CTRL_SET_MAX_CHILDS)
+ return ctrl_msg->ctrl_msg.intval;
+ return -1;
+}
+
+int udev_ctrl_get_set_max_childs_running(struct udev_ctrl_msg *ctrl_msg)
+{
+ if (ctrl_msg->ctrl_msg.type == UDEV_CTRL_SET_MAX_CHILDS_RUNNING)
+ return ctrl_msg->ctrl_msg.intval;
+ return -1;
+}
struct udev_monitor {
struct udev *udev;
int refcount;
- int socket;
+ int sock;
+ struct sockaddr_un saddr;
+ socklen_t addrlen;
};
/**
struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path)
{
struct udev_monitor *udev_monitor;
- struct sockaddr_un saddr;
- socklen_t addrlen;
- const int on = 1;
if (udev == NULL)
return NULL;
udev_monitor->refcount = 1;
udev_monitor->udev = udev;
- memset(&saddr, 0x00, sizeof(saddr));
- saddr.sun_family = AF_LOCAL;
- strcpy(saddr.sun_path, socket_path);
- addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path);
+ udev_monitor->saddr.sun_family = AF_LOCAL;
+ strcpy(udev_monitor->saddr.sun_path, socket_path);
+ udev_monitor->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(udev_monitor->saddr.sun_path);
/* translate leading '@' to abstract namespace */
- if (saddr.sun_path[0] == '@')
- saddr.sun_path[0] = '\0';
+ if (udev_monitor->saddr.sun_path[0] == '@')
+ udev_monitor->saddr.sun_path[0] = '\0';
- udev_monitor->socket = socket(AF_LOCAL, SOCK_DGRAM, 0);
- if (udev_monitor->socket == -1) {
+ udev_monitor->sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
+ if (udev_monitor->sock == -1) {
err(udev, "error getting socket: %s\n", strerror(errno));
free(udev_monitor);
return NULL;
}
+ return udev_monitor;
+}
- if (bind(udev_monitor->socket, (struct sockaddr *) &saddr, addrlen) < 0) {
- err(udev, "bind failed: %s\n", strerror(errno));
- close(udev_monitor->socket);
- free(udev_monitor);
- return NULL;
+int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor)
+{
+ int err;
+ const int on = 1;
+
+ err = bind(udev_monitor->sock, (struct sockaddr *) &udev_monitor->saddr, udev_monitor->addrlen);
+ if (err < 0) {
+ err(udev_monitor->udev, "bind failed: %s\n", strerror(errno));
+ return err;
}
/* enable receiving of the sender credentials */
- setsockopt(udev_monitor->socket, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
+ setsockopt(udev_monitor->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
info(udev_monitor->udev, "udev_monitor: %p created\n", udev_monitor);
-
- return udev_monitor;
+ return 0;
}
/**
* udev_monitor_unref:
* @udev_monitor: udev monitor
*
- * Drop a reference of a udev monitor. If the refcount reaches zero,
+ * Drop a reference ofa udev monitor. If the refcount reaches zero,
* the bound socket will be closed, and the ressources of the monitor
* will be released.
*
udev_monitor->refcount--;
if (udev_monitor->refcount > 0)
return;
- close(udev_monitor->socket);
+ if (udev_monitor->sock >= 0)
+ close(udev_monitor->sock);
info(udev_monitor->udev, "udev_monitor: %p released\n", udev_monitor);
free(udev_monitor);
}
{
if (udev_monitor == NULL)
return -1;
- return udev_monitor->socket;
+ return udev_monitor->sock;
}
/**
- * udev_monitor_get_device:
+ * udev_monitor_receive_device:
* @udev_monitor: udev monitor
*
- * Retrieve data from the udev monitor socket, allocate a new udev
+ * Receive data from the udev monitor socket, allocate a new udev
* device, fill in the received data, and return the device.
*
* Only socket connections with uid=0 are accepted. The caller
*
* Returns: a new udev device, or #NULL, in case of an error
**/
-struct udev_device *udev_monitor_get_device(struct udev_monitor *udev_monitor)
+struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor)
{
struct udev_device *udev_device;
struct msghdr smsg;
smsg.msg_control = cred_msg;
smsg.msg_controllen = sizeof(cred_msg);
- if (recvmsg(udev_monitor->socket, &smsg, 0) < 0) {
+ if (recvmsg(udev_monitor->sock, &smsg, 0) < 0) {
if (errno != EINTR)
info(udev_monitor->udev, "unable to receive message");
return NULL;
extern int device_add_devlink(struct udev_device *udev_device, const char *devlink);
extern int device_add_property(struct udev_device *udev_device, const char *property);
+/* udev_ctrl - daemon runtime setup */
+struct udev_ctrl;
+extern struct udev_ctrl *udev_ctrl_new_from_socket(struct udev *udev, const char *socket_path);
+extern int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl);
+extern struct udev_ctrl *udev_ctrl_ref(struct udev_ctrl *uctrl);
+extern void udev_ctrl_unref(struct udev_ctrl *uctrl);
+extern struct udev *udev_ctrl_get_udev(struct udev_ctrl *uctrl);
+extern int udev_ctrl_get_fd(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_set_log_level(struct udev_ctrl *uctrl, int priority);
+extern int udev_ctrl_send_stop_exec_queue(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_start_exec_queue(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_reload_rules(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_set_env(struct udev_ctrl *uctrl, const char *key);
+extern int udev_ctrl_send_set_max_childs(struct udev_ctrl *uctrl, int count);
+extern int udev_ctrl_send_set_max_childs_running(struct udev_ctrl *uctrl, int count);
+struct udev_ctrl_msg;
+extern struct udev_ctrl_msg *udev_ctrl_msg(struct udev_ctrl *uctrl);
+extern struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl *uctrl);
+extern struct udev_ctrl_msg *udev_ctrl_msg_ref(struct udev_ctrl_msg *ctrl_msg);
+extern void udev_ctrl_msg_unref(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_set_log_level(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_stop_exec_queue(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_start_exec_queue(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_reload_rules(struct udev_ctrl_msg *ctrl_msg);
+extern const char *udev_ctrl_get_set_env(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_set_max_childs(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_set_max_childs_running(struct udev_ctrl_msg *ctrl_msg);
+
/* libudev-utils */
extern ssize_t util_get_sys_subsystem(struct udev *udev, const char *devpath, char *subsystem, size_t size);
#endif
#endif
struct udev;
-struct udev_device;
-struct udev_monitor;
-
extern struct udev *udev_new(void);
extern struct udev *udev_ref(struct udev *udev);
extern void udev_unref(struct udev *udev);
extern const char *udev_get_sys_path(struct udev *udev);
extern const char *udev_get_dev_path(struct udev *udev);
+struct udev_device;
extern struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char *devpath);
extern struct udev_device *udev_device_ref(struct udev_device *udev_device);
extern void udev_device_unref(struct udev_device *udev_device);
const char *devpath, const char *subsystem, const char *name, void *data),
void *data);
+struct udev_monitor;
extern struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path);
+extern int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor);
extern struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor);
extern void udev_monitor_unref(struct udev_monitor *udev_monitor);
extern struct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor);
extern int udev_monitor_get_fd(struct udev_monitor *udev_monitor);
-extern struct udev_device *udev_monitor_get_device(struct udev_monitor *udev_monitor);
+extern struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor);
#endif
printf("no socket\n");
return -1;
}
+ if (udev_monitor_enable_receiving(udev_monitor) < 0) {
+ printf("bind failed\n");
+ return -1;
+ }
fd = udev_monitor_get_fd(udev_monitor);
FD_ZERO(&readfds);
printf("select fd count: %i\n", fdcount);
if (FD_ISSET(fd, &readfds)) {
- device = udev_monitor_get_device(udev_monitor);
+ device = udev_monitor_receive_device(udev_monitor);
if (device == NULL) {
printf("no device from socket\n");
continue;
+++ /dev/null
-/*
- * Copyright (C) 2005-2008 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 version 2 of the License.
- *
- * 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, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- */
-
-#include "config.h"
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-
-#include "udev.h"
-#include "udevd.h"
-
-struct udev_ctrl {
- struct udev *udev;
- int sock;
- struct sockaddr_un saddr;
- socklen_t addrlen;
-};
-
-struct udev_ctrl *udev_ctrl_new_from_socket(struct udev *udev, const char *socket_path)
-{
- struct udev_ctrl *uctrl;
-
- uctrl = malloc(sizeof(struct udev_ctrl));
- if (uctrl == NULL)
- return NULL;
- memset(uctrl, 0x00, sizeof(struct udev_ctrl));
- uctrl->udev = udev;
-
- uctrl->sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
- if (uctrl->sock < 0) {
- err(udev, "error getting socket: %s\n", strerror(errno));
- free(uctrl);
- return NULL;
- }
-
- uctrl->saddr.sun_family = AF_LOCAL;
- strcpy(uctrl->saddr.sun_path, socket_path);
- uctrl->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(uctrl->saddr.sun_path);
- /* translate leading '@' to abstract namespace */
- if (uctrl->saddr.sun_path[0] == '@')
- uctrl->saddr.sun_path[0] = '\0';
- return uctrl;
-}
-
-void udev_ctrl_unref(struct udev_ctrl *uctrl)
-{
- if (uctrl == NULL)
- return;
- close(uctrl->sock);
-}
-
-static int ctrl_send(struct udev_ctrl *uctrl, enum udevd_ctrl_msg_type type, int intval, const char *buf)
-{
- struct udevd_ctrl_msg ctrl_msg;
- int err;
-
- memset(&ctrl_msg, 0x00, sizeof(struct udevd_ctrl_msg));
- strcpy(ctrl_msg.magic, UDEVD_CTRL_MAGIC);
- ctrl_msg.type = type;
-
- if (buf != NULL)
- strlcpy(ctrl_msg.buf, buf, sizeof(ctrl_msg.buf));
- else
- ctrl_msg.intval = intval;
-
- err = sendto(uctrl->sock, &ctrl_msg, sizeof(ctrl_msg), 0, (struct sockaddr *)&uctrl->saddr, uctrl->addrlen);
- if (err == -1) {
- err(uctrl->udev, "error sending message: %s\n", strerror(errno));
- }
- return err;
-}
-
-int udev_ctrl_set_log_level(struct udev_ctrl *uctrl, int priority)
-{
- ctrl_send(uctrl, UDEVD_CTRL_SET_LOG_LEVEL, priority, NULL);
- return 0;
-}
-
-int udev_ctrl_stop_exec_queue(struct udev_ctrl *uctrl)
-{
- ctrl_send(uctrl, UDEVD_CTRL_STOP_EXEC_QUEUE, 0, NULL);
- return 0;
-}
-
-int udev_ctrl_start_exec_queue(struct udev_ctrl *uctrl)
-{
- ctrl_send(uctrl, UDEVD_CTRL_START_EXEC_QUEUE, 0, NULL);
- return 0;
-}
-
-int udev_ctrl_reload_rules(struct udev_ctrl *uctrl)
-{
- ctrl_send(uctrl, UDEVD_CTRL_RELOAD_RULES, 0, NULL);
- return 0;
-}
-
-int udev_ctrl_set_env(struct udev_ctrl *uctrl, const char *key)
-{
- ctrl_send(uctrl, UDEVD_CTRL_ENV, 0, optarg);
- return 0;
-}
-
-int udev_ctrl_set_max_childs(struct udev_ctrl *uctrl, int count)
-{
- ctrl_send(uctrl, UDEVD_CTRL_SET_MAX_CHILDS, count, NULL);
- return 0;
-}
-
-int udev_ctrl_set_max_childs_running(struct udev_ctrl *uctrl, int count)
-{
- ctrl_send(uctrl, UDEVD_CTRL_SET_MAX_CHILDS_RUNNING, count, NULL);
- return 0;
-}
#define DEFAULT_PARTITIONS_COUNT 15
#define UDEV_EVENT_TIMEOUT 180
+/* linux/include/linux/kobject.h */
+#define UEVENT_BUFFER_SIZE 2048
+#define UEVENT_NUM_ENVP 32
+
+#define UDEV_CTRL_SOCK_PATH "@" UDEV_PREFIX "/org/kernel/udev/udevd"
+
#define UDEV_MAX(a,b) ((a) > (b) ? (a) : (b))
/* pipes */
extern int udevadm_settle(struct udev *udev, int argc, char *argv[]);
extern int udevadm_test(struct udev *udev, int argc, char *argv[]);
-/* udev_ctrl - daemon runtime setup */
-struct udev_ctrl;
-extern struct udev_ctrl *udev_ctrl_new_from_socket(struct udev *udev, const char *socket_path);
-extern void udev_ctrl_unref(struct udev_ctrl *uctrl);
-extern int udev_ctrl_set_log_level(struct udev_ctrl *uctrl, int priority);
-extern int udev_ctrl_stop_exec_queue(struct udev_ctrl *uctrl);
-extern int udev_ctrl_start_exec_queue(struct udev_ctrl *uctrl);
-extern int udev_ctrl_reload_rules(struct udev_ctrl *uctrl);
-extern int udev_ctrl_set_env(struct udev_ctrl *uctrl, const char *key);
-extern int udev_ctrl_set_max_childs(struct udev_ctrl *uctrl, int count);
-extern int udev_ctrl_set_max_childs_running(struct udev_ctrl *uctrl, int count);
-
#endif
#include <sys/un.h>
#include "udev.h"
-#include "udevd.h"
+
+static void print_help(void)
+{
+ printf("Usage: udevadm control COMMAND\n"
+ " --log-priority=<level> set the udev log level for the daemon\n"
+ " --stop-exec-queue keep udevd from executing events, queue only\n"
+ " --start-exec-queue execute events, flush queue\n"
+ " --reload-rules reloads the rules files\n"
+ " --env=<KEY>=<value> set a global environment variable\n"
+ " --max-childs=<N> maximum number of childs\n"
+ " --max-childs-running=<N> maximum number of childs running at the same time\n"
+ " --help print this help text\n\n");
+}
int udevadm_control(struct udev *udev, int argc, char *argv[])
{
- struct udev_ctrl *uctrl;
+ struct udev_ctrl *uctrl = NULL;
int rc = 1;
/* compat values with '_' will be removed in a future release */
goto exit;
}
- uctrl = udev_ctrl_new_from_socket(udev, UDEVD_CTRL_SOCK_PATH);
+ uctrl = udev_ctrl_new_from_socket(udev, UDEV_CTRL_SOCK_PATH);
if (uctrl == NULL)
goto exit;
fprintf(stderr, "invalid number '%s'\n", optarg);
goto exit;
}
- udev_ctrl_set_log_level(uctrl, log_priority(optarg));
+ udev_ctrl_send_set_log_level(uctrl, log_priority(optarg));
+ rc = 0;
break;
case 's':
case 's' + 256:
- udev_ctrl_stop_exec_queue(uctrl);
+ udev_ctrl_send_stop_exec_queue(uctrl);
+ rc = 0;
break;
case 'S':
case 'S' + 256:
- udev_ctrl_start_exec_queue(uctrl);
+ udev_ctrl_send_start_exec_queue(uctrl);
+ rc = 0;
break;
case 'R':
case 'R' + 256:
- udev_ctrl_reload_rules(uctrl);
+ udev_ctrl_send_reload_rules(uctrl);
+ rc = 0;
break;
case 'e':
if (strchr(optarg, '=') == NULL) {
fprintf(stderr, "expect <KEY>=<valaue> instead of '%s'\n", optarg);
goto exit;
}
- udev_ctrl_set_env(uctrl, optarg);
+ udev_ctrl_send_set_env(uctrl, optarg);
+ rc = 0;
break;
case 'm':
case 'm' + 256:
fprintf(stderr, "invalid number '%s'\n", optarg);
goto exit;
}
- udev_ctrl_set_max_childs(uctrl, i);
+ udev_ctrl_send_set_max_childs(uctrl, i);
+ rc = 0;
break;
case 'M':
case 'M' + 256:
fprintf(stderr, "invalid number '%s'\n", optarg);
goto exit;
}
- udev_ctrl_set_max_childs_running(uctrl, i);
+ udev_ctrl_send_set_max_childs_running(uctrl, i);
+ rc = 0;
break;
case 'h':
- printf("Usage: udevadm control COMMAND\n"
- " --log-priority=<level> set the udev log level for the daemon\n"
- " --stop-exec-queue keep udevd from executing events, queue only\n"
- " --start-exec-queue execute events, flush queue\n"
- " --reload-rules reloads the rules files\n"
- " --env=<KEY>=<value> set a global environment variable\n"
- " --max-childs=<N> maximum number of childs\n"
- " --max-childs-running=<N> maximum number of childs running at the same time\n"
- " --help print this help text\n\n");
+ print_help();
+ rc = 0;
goto exit;
default:
goto exit;
"this will stop working in a future release\n");
if (!strncmp(arg, "log_priority=", strlen("log_priority="))) {
- udev_ctrl_set_log_level(uctrl, log_priority(&arg[strlen("log_priority=")]));
+ udev_ctrl_send_set_log_level(uctrl, log_priority(&arg[strlen("log_priority=")]));
+ rc = 0;
+ goto exit;
} else if (!strcmp(arg, "stop_exec_queue")) {
- udev_ctrl_stop_exec_queue(uctrl);
+ udev_ctrl_send_stop_exec_queue(uctrl);
+ rc = 0;
+ goto exit;
} else if (!strcmp(arg, "start_exec_queue")) {
- udev_ctrl_start_exec_queue(uctrl);
+ udev_ctrl_send_start_exec_queue(uctrl);
+ rc = 0;
+ goto exit;
} else if (!strcmp(arg, "reload_rules")) {
- udev_ctrl_reload_rules(uctrl);
+ udev_ctrl_send_reload_rules(uctrl);
+ rc = 0;
+ goto exit;
} else if (!strncmp(arg, "max_childs=", strlen("max_childs="))) {
- udev_ctrl_set_max_childs(uctrl, strtoul(&arg[strlen("max_childs=")], NULL, 0));
+ udev_ctrl_send_set_max_childs(uctrl, strtoul(&arg[strlen("max_childs=")], NULL, 0));
+ rc = 0;
+ goto exit;
} else if (!strncmp(arg, "max_childs_running=", strlen("max_childs_running="))) {
- udev_ctrl_set_max_childs_running(uctrl, strtoul(&arg[strlen("max_childs_running=")], NULL, 0));
+ udev_ctrl_send_set_max_childs_running(uctrl, strtoul(&arg[strlen("max_childs_running=")], NULL, 0));
+ rc = 0;
+ goto exit;
} else if (!strncmp(arg, "env", strlen("env"))) {
- udev_ctrl_set_env(uctrl, &arg[strlen("env=")]);
- } else {
- fprintf(stderr, "unrecognized command '%s'\n", arg);
- err(udev, "unrecognized command '%s'\n", arg);
+ udev_ctrl_send_set_env(uctrl, &arg[strlen("env=")]);
+ rc = 0;
+ goto exit;
}
}
+
+ if (rc != 0) {
+ fprintf(stderr, "unrecognized command\n");
+ err(udev, "unrecognized command\n");
+ }
exit:
udev_ctrl_unref(uctrl);
return rc;
#include <linux/netlink.h>
#include "udev.h"
-#include "udevd.h"
static int uevent_netlink_sock = -1;
static int udev_monitor_sock = -1;
#include <sys/types.h>
#include "udev.h"
-#include "udevd.h"
#define DEFAULT_TIMEOUT 180
#define LOOP_PER_SECOND 20
#include <sys/un.h>
#include "udev.h"
-#include "udevd.h"
#include "udev_rules.h"
static int verbose;
#include "udev.h"
#include "udev_rules.h"
-#include "udevd.h"
#include "udev_selinux.h"
+#define UDEVD_PRIORITY -4
+#define UDEV_PRIORITY -2
+
+/* maximum limit of forked childs */
+#define UDEVD_MAX_CHILDS 256
+/* start to throttle forking if maximum number of running childs in our session is reached */
+#define UDEVD_MAX_CHILDS_RUNNING 16
+
static int debug;
static void log_fn(struct udev *udev, int priority,
static int debug_trace;
static struct udev_rules rules;
-static int udevd_sock = -1;
+static struct udev_ctrl *udev_ctrl;
static int uevent_netlink_sock = -1;
static int inotify_fd = -1;
static pid_t sid;
case 0:
/* child */
close(uevent_netlink_sock);
- close(udevd_sock);
+ udev_ctrl_unref(udev_ctrl);
if (inotify_fd >= 0)
close(inotify_fd);
close(signal_pipe[READ_END]);
}
/* receive the udevd message from userspace */
-static void get_ctrl_msg(struct udev *udev)
+static void handle_ctrl_msg(struct udev_ctrl *uctrl)
{
- struct udevd_ctrl_msg ctrl_msg;
- ssize_t size;
- struct msghdr smsg;
- struct cmsghdr *cmsg;
- struct iovec iov;
- struct ucred *cred;
- char cred_msg[CMSG_SPACE(sizeof(struct ucred))];
- char *pos;
-
- memset(&ctrl_msg, 0x00, sizeof(struct udevd_ctrl_msg));
- iov.iov_base = &ctrl_msg;
- iov.iov_len = sizeof(struct udevd_ctrl_msg);
-
- memset(&smsg, 0x00, sizeof(struct msghdr));
- smsg.msg_iov = &iov;
- smsg.msg_iovlen = 1;
- smsg.msg_control = cred_msg;
- smsg.msg_controllen = sizeof(cred_msg);
-
- size = recvmsg(udevd_sock, &smsg, 0);
- if (size < 0) {
- if (errno != EINTR)
- err(udev, "unable to receive user udevd message: %s\n", strerror(errno));
- return;
- }
- cmsg = CMSG_FIRSTHDR(&smsg);
- cred = (struct ucred *) CMSG_DATA(cmsg);
-
- if (cmsg == NULL || cmsg->cmsg_type != SCM_CREDENTIALS) {
- err(udev, "no sender credentials received, message ignored\n");
- return;
- }
+ struct udev *udev = udev_ctrl_get_udev(uctrl);
+ struct udev_ctrl_msg *ctrl_msg;
+ const char *str;
+ int i;
- if (cred->uid != 0) {
- err(udev, "sender uid=%i, message ignored\n", cred->uid);
+ ctrl_msg = udev_ctrl_receive_msg(uctrl);
+ if (ctrl_msg == NULL)
return;
- }
- if (strncmp(ctrl_msg.magic, UDEVD_CTRL_MAGIC, sizeof(UDEVD_CTRL_MAGIC)) != 0 ) {
- err(udev, "message magic '%s' doesn't match, ignore it\n", ctrl_msg.magic);
- return;
+ i = udev_ctrl_get_set_log_level(ctrl_msg);
+ if (i >= 0) {
+ info(udev, "udevd message (SET_LOG_PRIORITY) received, log_priority=%i\n", i);
+ udev_set_log_priority(udev, i);
+ sprintf(udev_log_env, "UDEV_LOG=%i", i);
+ putenv(udev_log_env);
}
- switch (ctrl_msg.type) {
- case UDEVD_CTRL_ENV:
- pos = strchr(ctrl_msg.buf, '=');
- if (pos == NULL) {
- err(udev, "wrong key format '%s'\n", ctrl_msg.buf);
- break;
- }
- pos[0] = '\0';
- if (pos[1] == '\0') {
- info(udev, "udevd message (ENV) received, unset '%s'\n", ctrl_msg.buf);
- unsetenv(ctrl_msg.buf);
- } else {
- info(udev, "udevd message (ENV) received, set '%s=%s'\n", ctrl_msg.buf, &pos[1]);
- setenv(ctrl_msg.buf, &pos[1], 1);
- }
- break;
- case UDEVD_CTRL_STOP_EXEC_QUEUE:
+ if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {
info(udev, "udevd message (STOP_EXEC_QUEUE) received\n");
stop_exec_q = 1;
- break;
- case UDEVD_CTRL_START_EXEC_QUEUE:
+ }
+
+ if (udev_ctrl_get_start_exec_queue(ctrl_msg) > 0) {
info(udev, "udevd message (START_EXEC_QUEUE) received\n");
stop_exec_q = 0;
msg_queue_manager(udev);
- break;
- case UDEVD_CTRL_SET_LOG_LEVEL:
- info(udev, "udevd message (SET_LOG_PRIORITY) received, log_priority=%i\n", ctrl_msg.intval);
- udev_set_log_priority(udev, ctrl_msg.intval);
- sprintf(udev_log_env, "UDEV_LOG=%i", udev_get_log_priority(udev));
- putenv(udev_log_env);
- break;
- case UDEVD_CTRL_SET_MAX_CHILDS:
- info(udev, "udevd message (UDEVD_SET_MAX_CHILDS) received, max_childs=%i\n", ctrl_msg.intval);
- max_childs = ctrl_msg.intval;
- break;
- case UDEVD_CTRL_SET_MAX_CHILDS_RUNNING:
- info(udev, "udevd message (UDEVD_SET_MAX_CHILDS_RUNNING) received, max_childs_running=%i\n", ctrl_msg.intval);
- max_childs_running = ctrl_msg.intval;
- break;
- case UDEVD_CTRL_RELOAD_RULES:
+ }
+
+ if (udev_ctrl_get_reload_rules(ctrl_msg) > 0) {
info(udev, "udevd message (RELOAD_RULES) received\n");
reload_config = 1;
- break;
- default:
- err(udev, "unknown control message type\n");
}
+
+ str = udev_ctrl_get_set_env(ctrl_msg);
+ if (str != NULL) {
+ char *key = strdup(str);
+ char *val;
+
+ val = strchr(str, '=');
+ if (val != NULL) {
+ val[0] = '\0';
+ val = &val[1];
+ if (val[0] == '\0') {
+ info(udev, "udevd message (ENV) received, unset '%s'\n", key);
+ unsetenv(str);
+ } else {
+ info(udev, "udevd message (ENV) received, set '%s=%s'\n", key, val);
+ setenv(key, val, 1);
+ }
+ } else {
+ err(udev, "wrong key format '%s'\n", key);
+ }
+ free(key);
+ }
+
+ i = udev_ctrl_get_set_max_childs(ctrl_msg);
+ if (i >= 0) {
+ info(udev, "udevd message (SET_MAX_CHILDS) received, max_childs=%i\n", i);
+ max_childs = i;
+ }
+
+ i = udev_ctrl_get_set_max_childs_running(ctrl_msg);
+ if (i > 0) {
+ info(udev, "udevd message (SET_MAX_CHILDS_RUNNING) received, max_childs_running=%i\n", i);
+ max_childs_running = i;
+ }
+
+ udev_ctrl_msg_unref(ctrl_msg);
}
/* receive the kernel user event message and do some sanity checks */
}
}
-static int init_udevd_socket(struct udev *udev)
-{
- struct sockaddr_un saddr;
- socklen_t addrlen;
- const int feature_on = 1;
- int retval;
-
- memset(&saddr, 0x00, sizeof(saddr));
- saddr.sun_family = AF_LOCAL;
- strcpy(saddr.sun_path, UDEVD_CTRL_SOCK_PATH);
- addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path);
- /* translate leading '@' to abstract namespace */
- if (saddr.sun_path[0] == '@')
- saddr.sun_path[0] = '\0';
-
- udevd_sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
- if (udevd_sock == -1) {
- err(udev, "error getting socket: %s\n", strerror(errno));
- return -1;
- }
-
- /* the bind takes care of ensuring only one copy running */
- retval = bind(udevd_sock, (struct sockaddr *) &saddr, addrlen);
- if (retval < 0) {
- err(udev, "bind failed: %s\n", strerror(errno));
- close(udevd_sock);
- udevd_sock = -1;
- return -1;
- }
-
- /* enable receiving of the sender credentials */
- setsockopt(udevd_sock, SOL_SOCKET, SO_PASSCRED, &feature_on, sizeof(feature_on));
-
- return 0;
-}
-
static int init_uevent_netlink_sock(struct udev *udev)
{
struct sockaddr_nl snl;
if (write(STDERR_FILENO, 0, 0) < 0)
dup2(fd, STDERR_FILENO);
- /* init sockets to receive events */
- if (init_udevd_socket(udev) < 0) {
- if (errno == EADDRINUSE) {
- fprintf(stderr, "another udev daemon already running\n");
- err(udev, "another udev daemon already running\n");
- rc = 1;
- } else {
- fprintf(stderr, "error initializing udevd socket\n");
- err(udev, "error initializing udevd socket\n");
- rc = 2;
- }
+ /* init control socket, bind() ensures, that only one udevd instance is running */
+ udev_ctrl = udev_ctrl_new_from_socket(udev, UDEV_CTRL_SOCK_PATH);
+ if (udev_ctrl == NULL) {
+ fprintf(stderr, "error initializing control socket");
+ err(udev, "error initializing udevd socket");
+ rc = 1;
+ goto exit;
+ }
+
+ if (udev_ctrl_enable_receiving(udev_ctrl) < 0) {
+ fprintf(stderr, "error binding control socket, seems udevd is already running\n");
+ err(udev, "error binding control socket, seems udevd is already running\n");
+ rc = 1;
goto exit;
}
goto exit;
}
- /* setup signal handler pipe */
retval = pipe(signal_pipe);
if (retval < 0) {
err(udev, "error getting pipes: %s\n", strerror(errno));
}
}
- /* redirect std{out,err} fd's */
- if (!debug)
+ /* redirect std{out,err} */
+ if (!debug) {
dup2(fd, STDOUT_FILENO);
- dup2(fd, STDERR_FILENO);
+ dup2(fd, STDERR_FILENO);
+ }
if (fd > STDERR_FILENO)
close(fd);
if (debug_trace)
putenv("DEBUG=1");
- maxfd = udevd_sock;
+ maxfd = udev_ctrl_get_fd(udev_ctrl);
maxfd = UDEV_MAX(maxfd, uevent_netlink_sock);
maxfd = UDEV_MAX(maxfd, signal_pipe[READ_END]);
maxfd = UDEV_MAX(maxfd, inotify_fd);
FD_ZERO(&readfds);
FD_SET(signal_pipe[READ_END], &readfds);
- FD_SET(udevd_sock, &readfds);
+ FD_SET(udev_ctrl_get_fd(udev_ctrl), &readfds);
FD_SET(uevent_netlink_sock, &readfds);
if (inotify_fd >= 0)
FD_SET(inotify_fd, &readfds);
}
/* get control message */
- if (FD_ISSET(udevd_sock, &readfds))
- get_ctrl_msg(udev);
+ if (FD_ISSET(udev_ctrl_get_fd(udev_ctrl), &readfds))
+ handle_ctrl_msg(udev_ctrl);
/* get netlink message */
if (FD_ISSET(uevent_netlink_sock, &readfds)) {
if (signal_pipe[WRITE_END] >= 0)
close(signal_pipe[WRITE_END]);
- if (udevd_sock >= 0)
- close(udevd_sock);
+ udev_ctrl_unref(udev_ctrl);
if (inotify_fd >= 0)
close(inotify_fd);
if (uevent_netlink_sock >= 0)
+++ /dev/null
-/*
- * Copyright (C) 2004 Ling, Xiaofeng <xiaofeng.ling@intel.com>
- * Copyright (C) 2004-2006 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 version 2 of the License.
- *
- * 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, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- */
-
-#include "list.h"
-
-#define UDEVD_PRIORITY -4
-#define UDEV_PRIORITY -2
-
-/* maximum limit of forked childs */
-#define UDEVD_MAX_CHILDS 256
-/* start to throttle forking if maximum number of running childs in our session is reached */
-#define UDEVD_MAX_CHILDS_RUNNING 16
-
-/* linux/include/linux/kobject.h */
-#define UEVENT_BUFFER_SIZE 2048
-#define UEVENT_NUM_ENVP 32
-
-#define UDEVD_CTRL_SOCK_PATH "@" UDEV_PREFIX "/org/kernel/udev/udevd"
-#define UDEVD_CTRL_MAGIC "udevd-128"
-
-enum udevd_ctrl_msg_type {
- UDEVD_CTRL_UNKNOWN,
- UDEVD_CTRL_SET_LOG_LEVEL,
- UDEVD_CTRL_STOP_EXEC_QUEUE,
- UDEVD_CTRL_START_EXEC_QUEUE,
- UDEVD_CTRL_RELOAD_RULES,
- UDEVD_CTRL_ENV,
- UDEVD_CTRL_SET_MAX_CHILDS,
- UDEVD_CTRL_SET_MAX_CHILDS_RUNNING,
-};
-
-struct udevd_ctrl_msg {
- char magic[32];
- enum udevd_ctrl_msg_type type;
- union {
- int intval;
- char buf[256];
- };
-};
-
projects / systemd / commitdiff