/*
* libudev - interface to udev device information
*
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008 Kay Sievers <kay@vrfy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
-#include <sys/poll.h>
+#include <poll.h>
#include <sys/socket.h>
#include <sys/un.h>
int sock;
};
-struct udev_ctrl *udev_ctrl_new_from_fd(struct udev *udev, int fd)
-{
+struct udev_ctrl *udev_ctrl_new_from_fd(struct udev *udev, int fd) {
struct udev_ctrl *uctrl;
+ const int on = 1;
+ int r;
- uctrl = calloc(1, sizeof(struct udev_ctrl));
+ uctrl = new0(struct udev_ctrl, 1);
if (uctrl == NULL)
return NULL;
uctrl->refcount = 1;
if (fd < 0) {
uctrl->sock = socket(AF_LOCAL, SOCK_SEQPACKET|SOCK_NONBLOCK|SOCK_CLOEXEC, 0);
if (uctrl->sock < 0) {
- log_error("error getting socket: %m\n");
+ log_error_errno(errno, "error getting socket: %m");
udev_ctrl_unref(uctrl);
return NULL;
}
uctrl->bound = true;
uctrl->sock = fd;
}
+ r = setsockopt(uctrl->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
+ if (r < 0)
+ log_warning_errno(errno, "could not set SO_PASSCRED: %m");
uctrl->saddr.sun_family = AF_LOCAL;
- util_strscpy(uctrl->saddr.sun_path, sizeof(uctrl->saddr.sun_path), "/run/udev/control");
+ strscpy(uctrl->saddr.sun_path, sizeof(uctrl->saddr.sun_path), "/run/udev/control");
uctrl->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(uctrl->saddr.sun_path);
return uctrl;
}
-struct udev_ctrl *udev_ctrl_new(struct udev *udev)
-{
+struct udev_ctrl *udev_ctrl_new(struct udev *udev) {
return udev_ctrl_new_from_fd(udev, -1);
}
-int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl)
-{
+int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl) {
int err;
if (!uctrl->bound) {
if (err < 0) {
err = -errno;
- log_error("bind failed: %m\n");
+ log_error_errno(errno, "bind failed: %m");
return err;
}
err = listen(uctrl->sock, 0);
if (err < 0) {
err = -errno;
- log_error("listen failed: %m\n");
+ log_error_errno(errno, "listen failed: %m");
return err;
}
return 0;
}
-struct udev *udev_ctrl_get_udev(struct udev_ctrl *uctrl)
-{
+struct udev *udev_ctrl_get_udev(struct udev_ctrl *uctrl) {
return uctrl->udev;
}
-struct udev_ctrl *udev_ctrl_ref(struct udev_ctrl *uctrl)
-{
+static struct udev_ctrl *udev_ctrl_ref(struct udev_ctrl *uctrl) {
if (uctrl == NULL)
return NULL;
uctrl->refcount++;
return uctrl;
}
-struct udev_ctrl *udev_ctrl_unref(struct udev_ctrl *uctrl)
-{
+struct udev_ctrl *udev_ctrl_unref(struct udev_ctrl *uctrl) {
if (uctrl == NULL)
return NULL;
uctrl->refcount--;
return NULL;
}
-int udev_ctrl_cleanup(struct udev_ctrl *uctrl)
-{
+int udev_ctrl_cleanup(struct udev_ctrl *uctrl) {
if (uctrl == NULL)
return 0;
if (uctrl->cleanup_socket)
return 0;
}
-int udev_ctrl_get_fd(struct udev_ctrl *uctrl)
-{
+int udev_ctrl_get_fd(struct udev_ctrl *uctrl) {
if (uctrl == NULL)
return -EINVAL;
return uctrl->sock;
}
-struct udev_ctrl_connection *udev_ctrl_get_connection(struct udev_ctrl *uctrl)
-{
+struct udev_ctrl_connection *udev_ctrl_get_connection(struct udev_ctrl *uctrl) {
struct udev_ctrl_connection *conn;
- struct ucred ucred;
- socklen_t slen;
+ struct ucred ucred = {};
const int on = 1;
+ int r;
- conn = calloc(1, sizeof(struct udev_ctrl_connection));
+ conn = new(struct udev_ctrl_connection, 1);
if (conn == NULL)
return NULL;
conn->refcount = 1;
conn->sock = accept4(uctrl->sock, NULL, NULL, SOCK_CLOEXEC|SOCK_NONBLOCK);
if (conn->sock < 0) {
if (errno != EINTR)
- log_error("unable to receive ctrl connection: %m\n");
+ log_error_errno(errno, "unable to receive ctrl connection: %m");
goto err;
}
/* check peer credential of connection */
- slen = sizeof(ucred);
- if (getsockopt(conn->sock, SOL_SOCKET, SO_PEERCRED, &ucred, &slen) < 0) {
- log_error("unable to receive credentials of ctrl connection: %m\n");
+ r = getpeercred(conn->sock, &ucred);
+ if (r < 0) {
+ log_error_errno(r, "unable to receive credentials of ctrl connection: %m");
goto err;
}
if (ucred.uid > 0) {
- log_error("sender uid=%i, message ignored\n", ucred.uid);
+ log_error("sender uid="UID_FMT", message ignored", ucred.uid);
goto err;
}
/* enable receiving of the sender credentials in the messages */
- setsockopt(conn->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
+ r = setsockopt(conn->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
+ if (r < 0)
+ log_warning_errno(errno, "could not set SO_PASSCRED: %m");
+
udev_ctrl_ref(uctrl);
return conn;
err:
return NULL;
}
-struct udev_ctrl_connection *udev_ctrl_connection_ref(struct udev_ctrl_connection *conn)
-{
+struct udev_ctrl_connection *udev_ctrl_connection_ref(struct udev_ctrl_connection *conn) {
if (conn == NULL)
return NULL;
conn->refcount++;
return conn;
}
-struct udev_ctrl_connection *udev_ctrl_connection_unref(struct udev_ctrl_connection *conn)
-{
+struct udev_ctrl_connection *udev_ctrl_connection_unref(struct udev_ctrl_connection *conn) {
if (conn == NULL)
return NULL;
conn->refcount--;
return NULL;
}
-static int ctrl_send(struct udev_ctrl *uctrl, enum udev_ctrl_msg_type type, int intval, const char *buf, int timeout)
-{
+static int ctrl_send(struct udev_ctrl *uctrl, enum udev_ctrl_msg_type type, int intval, const char *buf, int timeout) {
struct udev_ctrl_msg_wire ctrl_msg_wire;
int err = 0;
- memset(&ctrl_msg_wire, 0x00, sizeof(struct udev_ctrl_msg_wire));
+ memzero(&ctrl_msg_wire, sizeof(struct udev_ctrl_msg_wire));
strcpy(ctrl_msg_wire.version, "udev-" VERSION);
ctrl_msg_wire.magic = UDEV_CTRL_MAGIC;
ctrl_msg_wire.type = type;
if (buf != NULL)
- util_strscpy(ctrl_msg_wire.buf, sizeof(ctrl_msg_wire.buf), buf);
+ strscpy(ctrl_msg_wire.buf, sizeof(ctrl_msg_wire.buf), buf);
else
ctrl_msg_wire.intval = intval;
pfd[0].fd = uctrl->sock;
pfd[0].events = POLLIN;
- r = poll(pfd, 1, timeout * 1000);
+ r = poll(pfd, 1, timeout * MSEC_PER_SEC);
if (r < 0) {
if (errno == EINTR)
continue;
return err;
}
-int udev_ctrl_send_set_log_level(struct udev_ctrl *uctrl, int priority, int timeout)
-{
+int udev_ctrl_send_set_log_level(struct udev_ctrl *uctrl, int priority, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_SET_LOG_LEVEL, priority, NULL, timeout);
}
-int udev_ctrl_send_stop_exec_queue(struct udev_ctrl *uctrl, int timeout)
-{
+int udev_ctrl_send_stop_exec_queue(struct udev_ctrl *uctrl, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_STOP_EXEC_QUEUE, 0, NULL, timeout);
}
-int udev_ctrl_send_start_exec_queue(struct udev_ctrl *uctrl, int timeout)
-{
+int udev_ctrl_send_start_exec_queue(struct udev_ctrl *uctrl, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_START_EXEC_QUEUE, 0, NULL, timeout);
}
-int udev_ctrl_send_reload(struct udev_ctrl *uctrl, int timeout)
-{
+int udev_ctrl_send_reload(struct udev_ctrl *uctrl, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_RELOAD, 0, NULL, timeout);
}
-int udev_ctrl_send_set_env(struct udev_ctrl *uctrl, const char *key, int timeout)
-{
+int udev_ctrl_send_set_env(struct udev_ctrl *uctrl, const char *key, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_SET_ENV, 0, key, timeout);
}
-int udev_ctrl_send_set_children_max(struct udev_ctrl *uctrl, int count, int timeout)
-{
+int udev_ctrl_send_set_children_max(struct udev_ctrl *uctrl, int count, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_SET_CHILDREN_MAX, count, NULL, timeout);
}
-int udev_ctrl_send_ping(struct udev_ctrl *uctrl, int timeout)
-{
+int udev_ctrl_send_ping(struct udev_ctrl *uctrl, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_PING, 0, NULL, timeout);
}
-int udev_ctrl_send_exit(struct udev_ctrl *uctrl, int timeout)
-{
+int udev_ctrl_send_exit(struct udev_ctrl *uctrl, int timeout) {
return ctrl_send(uctrl, UDEV_CTRL_EXIT, 0, NULL, timeout);
}
-struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl_connection *conn)
-{
+struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl_connection *conn) {
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))];
+ struct msghdr smsg = {
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ .msg_control = cred_msg,
+ .msg_controllen = sizeof(cred_msg),
+ };
+ struct ucred *cred;
- uctrl_msg = calloc(1, sizeof(struct udev_ctrl_msg));
+ uctrl_msg = new0(struct udev_ctrl_msg, 1);
if (uctrl_msg == NULL)
return NULL;
uctrl_msg->refcount = 1;
udev_ctrl_connection_ref(conn);
/* wait for the incoming message */
- for(;;) {
+ for (;;) {
struct pollfd pfd[1];
int r;
continue;
goto err;
} else if (r == 0) {
- log_error("timeout waiting for ctrl message\n");
+ log_error("timeout waiting for ctrl message");
goto err;
} else {
if (!(pfd[0].revents & POLLIN)) {
- log_error("ctrl connection error: %m\n");
+ log_error_errno(errno, "ctrl connection error: %m");
goto err;
}
}
iov.iov_base = &uctrl_msg->ctrl_msg_wire;
iov.iov_len = sizeof(struct udev_ctrl_msg_wire);
- 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(conn->sock, &smsg, 0);
if (size < 0) {
- log_error("unable to receive ctrl message: %m\n");
+ log_error_errno(errno, "unable to receive ctrl message: %m");
goto err;
}
+
+ cmsg_close_all(&smsg);
+
cmsg = CMSG_FIRSTHDR(&smsg);
cred = (struct ucred *) CMSG_DATA(cmsg);
if (cmsg == NULL || cmsg->cmsg_type != SCM_CREDENTIALS) {
- log_error("no sender credentials received, message ignored\n");
+ log_error("no sender credentials received, message ignored");
goto err;
}
if (cred->uid != 0) {
- log_error("sender uid=%i, message ignored\n", cred->uid);
+ log_error("sender uid="UID_FMT", message ignored", cred->uid);
goto err;
}
if (uctrl_msg->ctrl_msg_wire.magic != UDEV_CTRL_MAGIC) {
- log_error("message magic 0x%08x doesn't match, ignore it\n", uctrl_msg->ctrl_msg_wire.magic);
+ log_error("message magic 0x%08x doesn't match, ignore it", uctrl_msg->ctrl_msg_wire.magic);
goto err;
}
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;
-}
-
-struct udev_ctrl_msg *udev_ctrl_msg_unref(struct udev_ctrl_msg *ctrl_msg)
-{
+struct udev_ctrl_msg *udev_ctrl_msg_unref(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg == NULL)
return NULL;
ctrl_msg->refcount--;
return NULL;
}
-int udev_ctrl_get_set_log_level(struct udev_ctrl_msg *ctrl_msg)
-{
+int udev_ctrl_get_set_log_level(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_SET_LOG_LEVEL)
return ctrl_msg->ctrl_msg_wire.intval;
return -1;
}
-int udev_ctrl_get_stop_exec_queue(struct udev_ctrl_msg *ctrl_msg)
-{
+int udev_ctrl_get_stop_exec_queue(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_STOP_EXEC_QUEUE)
return 1;
return -1;
}
-int udev_ctrl_get_start_exec_queue(struct udev_ctrl_msg *ctrl_msg)
-{
+int udev_ctrl_get_start_exec_queue(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_START_EXEC_QUEUE)
return 1;
return -1;
}
-int udev_ctrl_get_reload(struct udev_ctrl_msg *ctrl_msg)
-{
+int udev_ctrl_get_reload(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_RELOAD)
return 1;
return -1;
}
-const char *udev_ctrl_get_set_env(struct udev_ctrl_msg *ctrl_msg)
-{
+const char *udev_ctrl_get_set_env(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_SET_ENV)
return ctrl_msg->ctrl_msg_wire.buf;
return NULL;
}
-int udev_ctrl_get_set_children_max(struct udev_ctrl_msg *ctrl_msg)
-{
+int udev_ctrl_get_set_children_max(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_SET_CHILDREN_MAX)
return ctrl_msg->ctrl_msg_wire.intval;
return -1;
}
-int udev_ctrl_get_ping(struct udev_ctrl_msg *ctrl_msg)
-{
+int udev_ctrl_get_ping(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_PING)
return 1;
return -1;
}
-int udev_ctrl_get_exit(struct udev_ctrl_msg *ctrl_msg)
-{
+int udev_ctrl_get_exit(struct udev_ctrl_msg *ctrl_msg) {
if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_EXIT)
return 1;
return -1;
~ianmdlvl / elogind.git / blobdiff