15720680019

Committed 17 Jun 2025 07:58PM UTC coverage: 72.087% (-0.02%) from 72.109%

Build # 15720680019

Build Type

push

github

Committed by

web-flow

Commit Message

sd-lldp: several improvements (#37845)

This makes
- sd-lldp-tx not send machine ID as chassis ID, but use application
specific machine ID,
- sd-lldp-tx emit vlan ID if it is running on a vlan interface,
- Describe() DBus method also reply LLDP configurations,
- io.systemd.Network.GetLLDPNeighbors varlink method provides vlan ID,
if received.

Closes #37613.

Coverage Stats

59 of 76 new or added lines in 3 files covered. (77.63%)

4663 existing lines in 75 files now uncovered.

300494 of 416851 relevant lines covered (72.09%)

704683.58 hits per line

Source File
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32.37

/src/udev/udev-ctrl.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <poll.h>
#include <sys/un.h>
#include <unistd.h>

#include "sd-event.h"

#include "alloc-util.h"
#include "errno-util.h"
#include "fd-util.h"
#include "format-util.h"
#include "iovec-util.h"
#include "log.h"
#include "socket-util.h"
#include "strxcpyx.h"
#include "udev-ctrl.h"

/* wire protocol magic must match */
#define UDEV_CTRL_MAGIC                                0xdead1dea

typedef struct UdevCtrlMessageWire {
        char version[16];
        unsigned magic;
        UdevCtrlMessageType type;
        UdevCtrlMessageValue value;
} UdevCtrlMessageWire;

struct UdevCtrl {
        unsigned n_ref;
        int sock;
        int sock_connect;
        union sockaddr_union saddr;
        socklen_t addrlen;
        bool bound;
        bool connected;
        sd_event *event;
        sd_event_source *event_source;
        sd_event_source *event_source_connect;
        udev_ctrl_handler_t callback;
        void *userdata;
};

int udev_ctrl_new_from_fd(UdevCtrl **ret, int fd) {
        _cleanup_close_ int sock = -EBADF;
        UdevCtrl *uctrl;
        int r;

        assert(ret);

        if (fd < 0) {
                sock = socket(AF_UNIX, SOCK_SEQPACKET|SOCK_NONBLOCK|SOCK_CLOEXEC, 0);
                if (sock < 0)
                        return log_error_errno(errno, "Failed to create socket: %m");
        }

        /* enable receiving of the sender credentials in the messages */
        r = setsockopt_int(fd >= 0 ? fd : sock, SOL_SOCKET, SO_PASSCRED, true);
        if (r < 0)
                log_warning_errno(r, "Failed to set SO_PASSCRED, ignoring: %m");

        r = setsockopt_int(fd >= 0 ? fd : sock, SOL_SOCKET, SO_PASSRIGHTS, false);
        if (r < 0)
                log_debug_errno(r, "Failed to turn off SO_PASSRIGHTS, ignoring: %m");

        uctrl = new(UdevCtrl, 1);
        if (!uctrl)
                return -ENOMEM;

        *uctrl = (UdevCtrl) {
                .n_ref = 1,
                .sock = fd >= 0 ? fd : TAKE_FD(sock),
                .sock_connect = -EBADF,
                .bound = fd >= 0,
        };

        uctrl->saddr.un = (struct sockaddr_un) {
                .sun_family = AF_UNIX,
                .sun_path = "/run/udev/control",
        };

        uctrl->addrlen = sockaddr_un_len(&uctrl->saddr.un);

        *ret = TAKE_PTR(uctrl);
        return 0;
}

int udev_ctrl_enable_receiving(UdevCtrl *uctrl) {
        assert(uctrl);

        if (uctrl->bound)
                return 0;

        (void) sockaddr_un_unlink(&uctrl->saddr.un);
        if (bind(uctrl->sock, &uctrl->saddr.sa, uctrl->addrlen) < 0)
                return log_error_errno(errno, "Failed to bind udev control socket: %m");

        if (listen(uctrl->sock, 0) < 0)
                return log_error_errno(errno, "Failed to listen udev control socket: %m");

        uctrl->bound = true;
        return 0;
}

static void udev_ctrl_disconnect(UdevCtrl *uctrl) {
        if (!uctrl)
                return;

        uctrl->event_source_connect = sd_event_source_unref(uctrl->event_source_connect);
        uctrl->sock_connect = safe_close(uctrl->sock_connect);
}

static UdevCtrl *udev_ctrl_free(UdevCtrl *uctrl) {
        assert(uctrl);

        udev_ctrl_disconnect(uctrl);

        sd_event_source_unref(uctrl->event_source);
        safe_close(uctrl->sock);

        sd_event_unref(uctrl->event);
        return mfree(uctrl);
}

DEFINE_TRIVIAL_REF_UNREF_FUNC(UdevCtrl, udev_ctrl, udev_ctrl_free);

int udev_ctrl_attach_event(UdevCtrl *uctrl, sd_event *event) {
        int r;

        assert_return(uctrl, -EINVAL);
        assert_return(!uctrl->event, -EBUSY);

        if (event)
                uctrl->event = sd_event_ref(event);
        else {
                r = sd_event_default(&uctrl->event);
                if (r < 0)
                        return r;
        }

        return 0;
}

sd_event_source *udev_ctrl_get_event_source(UdevCtrl *uctrl) {
        assert(uctrl);

        return uctrl->event_source;
}

static void udev_ctrl_disconnect_and_listen_again(UdevCtrl *uctrl) {
        udev_ctrl_disconnect(uctrl);
        udev_ctrl_unref(uctrl);
        (void) sd_event_source_set_enabled(uctrl->event_source, SD_EVENT_ON);
        /* We don't return NULL here because uctrl is not freed */
}

DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(UdevCtrl*, udev_ctrl_disconnect_and_listen_again, NULL);

static int udev_ctrl_connection_event_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
        _cleanup_(udev_ctrl_disconnect_and_listen_againp) UdevCtrl *uctrl = NULL;
        UdevCtrlMessageWire msg_wire;
        struct iovec iov = IOVEC_MAKE(&msg_wire, sizeof(UdevCtrlMessageWire));
        CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred))) control;
        struct msghdr smsg = {
                .msg_iov = &iov,
                .msg_iovlen = 1,
                .msg_control = &control,
                .msg_controllen = sizeof(control),
        };
        struct ucred *cred;
        ssize_t size;

        assert(userdata);

        /* When UDEV_CTRL_EXIT is received, manager unref udev_ctrl object.
         * To avoid the object freed, let's increment the refcount. */
        uctrl = udev_ctrl_ref(userdata);

        size = recvmsg_safe(fd, &smsg, 0);
        if (ERRNO_IS_NEG_TRANSIENT(size))
                return 0;
        if (size == -ECHRNG) {
                log_warning_errno(size, "Got message with truncated control data (unexpected fds sent?), ignoring.");
                return 0;
        }
        if (size == -EXFULL) {
                log_warning_errno(size, "Got message with truncated payload data, ignoring.");
                return 0;
        }
        if (size < 0)
                return log_error_errno(size, "Failed to receive ctrl message: %m");

        cmsg_close_all(&smsg);

        if (size != sizeof(msg_wire)) {
                log_warning("Received message with invalid length, ignoring");
                return 0;
        }

        cred = CMSG_FIND_DATA(&smsg, SOL_SOCKET, SCM_CREDENTIALS, struct ucred);
        if (!cred) {
                log_warning("No sender credentials received, ignoring message");
                return 0;
        }

        if (cred->uid != 0) {
                log_warning("Invalid sender uid "UID_FMT", ignoring message", cred->uid);
                return 0;
        }

        if (msg_wire.magic != UDEV_CTRL_MAGIC) {
                log_warning("Message magic 0x%08x doesn't match, ignoring message", msg_wire.magic);
                return 0;
        }

        if (msg_wire.type == _UDEV_CTRL_END_MESSAGES)
                return 0;

        if (uctrl->callback)
                (void) uctrl->callback(uctrl, msg_wire.type, &msg_wire.value, uctrl->userdata);

        /* Do not disconnect and wait for next message. */
        uctrl = udev_ctrl_unref(uctrl);
        return 0;
}

static int udev_ctrl_event_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
        UdevCtrl *uctrl = ASSERT_PTR(userdata);
        _cleanup_close_ int sock = -EBADF;
        struct ucred ucred;
        int r;

        sock = accept4(fd, NULL, NULL, SOCK_CLOEXEC|SOCK_NONBLOCK);
        if (sock < 0) {
                if (ERRNO_IS_ACCEPT_AGAIN(errno))
                        return 0;

                return log_error_errno(errno, "Failed to accept ctrl connection: %m");
        }

        /* check peer credential of connection */
        r = getpeercred(sock, &ucred);
        if (r < 0) {
                log_error_errno(r, "Failed to receive credentials of ctrl connection: %m");
                return 0;
        }

        if (ucred.uid > 0) {
                log_error("Invalid sender uid "UID_FMT", closing connection", ucred.uid);
                return 0;
        }

        r = sd_event_add_io(uctrl->event, &uctrl->event_source_connect, sock, EPOLLIN, udev_ctrl_connection_event_handler, uctrl);
        if (r < 0) {
                log_error_errno(r, "Failed to create event source for udev control connection: %m");
                return 0;
        }

        (void) sd_event_source_set_description(uctrl->event_source_connect, "udev-ctrl-connection");

        /* Do not accept multiple connection. */
        (void) sd_event_source_set_enabled(uctrl->event_source, SD_EVENT_OFF);

        uctrl->sock_connect = TAKE_FD(sock);
        return 0;
}

int udev_ctrl_start(UdevCtrl *uctrl, udev_ctrl_handler_t callback, void *userdata) {
        int r;

        assert(uctrl);

        if (!uctrl->event) {
                r = udev_ctrl_attach_event(uctrl, NULL);
                if (r < 0)
                        return r;
        }

        r = udev_ctrl_enable_receiving(uctrl);
        if (r < 0)
                return r;

        uctrl->callback = callback;
        uctrl->userdata = userdata;

        r = sd_event_add_io(uctrl->event, &uctrl->event_source, uctrl->sock, EPOLLIN, udev_ctrl_event_handler, uctrl);
        if (r < 0)
                return r;

        (void) sd_event_source_set_description(uctrl->event_source, "udev-ctrl");

        return 0;
}

int udev_ctrl_send(UdevCtrl *uctrl, UdevCtrlMessageType type, const void *data) {
        UdevCtrlMessageWire ctrl_msg_wire = {
                .version = "udev-" PROJECT_VERSION_STR,
                .magic = UDEV_CTRL_MAGIC,
                .type = type,
        };

        if (type == UDEV_CTRL_SET_ENV) {
                assert(data);
                strscpy(ctrl_msg_wire.value.buf, sizeof(ctrl_msg_wire.value.buf), data);
        } else if (IN_SET(type, UDEV_CTRL_SET_LOG_LEVEL, UDEV_CTRL_SET_CHILDREN_MAX))
                ctrl_msg_wire.value.intval = PTR_TO_INT(data);

        if (!uctrl->connected) {
                if (connect(uctrl->sock, &uctrl->saddr.sa, uctrl->addrlen) < 0)
                        return -errno;
                uctrl->connected = true;
        }

        if (send(uctrl->sock, &ctrl_msg_wire, sizeof(ctrl_msg_wire), 0) < 0)
                return -errno;

        return 0;
}

int udev_ctrl_wait(UdevCtrl *uctrl, usec_t timeout) {
        _cleanup_(sd_event_source_disable_unrefp) sd_event_source *source_io = NULL, *source_timeout = NULL;
        int r;

        assert(uctrl);

        if (uctrl->sock < 0)
                return 0;
        if (!uctrl->connected)
                return 0;

        r = udev_ctrl_send(uctrl, _UDEV_CTRL_END_MESSAGES, NULL);
        if (r < 0)
                return r;

        if (timeout == 0)
                return 0;

        if (!uctrl->event) {
                r = udev_ctrl_attach_event(uctrl, NULL);
                if (r < 0)
                        return r;
        }

        r = sd_event_add_io(uctrl->event, &source_io, uctrl->sock, EPOLLIN, NULL, INT_TO_PTR(0));
        if (r < 0)
                return r;

        (void) sd_event_source_set_description(source_io, "udev-ctrl-wait-io");

        if (timeout != USEC_INFINITY) {
                r = sd_event_add_time_relative(
                                uctrl->event, &source_timeout, CLOCK_BOOTTIME,
                                timeout,
                                0, NULL, INT_TO_PTR(-ETIMEDOUT));
                if (r < 0)
                        return r;

                (void) sd_event_source_set_description(source_timeout, "udev-ctrl-wait-timeout");
        }

        return sd_event_loop(uctrl->event);
}

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include <poll.h>
4	#include <sys/un.h>
5	#include <unistd.h>
6
7	#include "sd-event.h"
8
9	#include "alloc-util.h"
10	#include "errno-util.h"
11	#include "fd-util.h"
12	#include "format-util.h"
13	#include "iovec-util.h"
14	#include "log.h"
15	#include "socket-util.h"
16	#include "strxcpyx.h"
17	#include "udev-ctrl.h"
18
19	/* wire protocol magic must match */
20	#define UDEV_CTRL_MAGIC 0xdead1dea
21
22	typedef struct UdevCtrlMessageWire {
23	char version[16];
24	unsigned magic;
25	UdevCtrlMessageType type;
26	UdevCtrlMessageValue value;
27	} UdevCtrlMessageWire;
28
29	struct UdevCtrl {
30	unsigned n_ref;
31	int sock;
32	int sock_connect;
33	union sockaddr_union saddr;
34	socklen_t addrlen;
35	bool bound;
36	bool connected;
37	sd_event *event;
38	sd_event_source *event_source;
39	sd_event_source *event_source_connect;
40	udev_ctrl_handler_t callback;
41	void *userdata;
42	};
43
44	int udev_ctrl_new_from_fd(UdevCtrl **ret, int fd) {	56✔
45	_cleanup_close_ int sock = -EBADF;	56✔
46	UdevCtrl *uctrl;	56✔
47	int r;	56✔
48
49	assert(ret);	56✔
50
51	if (fd < 0) {	56✔
52	sock = socket(AF_UNIX, SOCK_SEQPACKET\|SOCK_NONBLOCK\|SOCK_CLOEXEC, 0);	×
53	if (sock < 0)	×
UNCOV 54	return log_error_errno(errno, "Failed to create socket: %m");	×
55	}
56
57	/* enable receiving of the sender credentials in the messages */
58	r = setsockopt_int(fd >= 0 ? fd : sock, SOL_SOCKET, SO_PASSCRED, true);	56✔
59	if (r < 0)	56✔
UNCOV 60	log_warning_errno(r, "Failed to set SO_PASSCRED, ignoring: %m");	×
61
62	r = setsockopt_int(fd >= 0 ? fd : sock, SOL_SOCKET, SO_PASSRIGHTS, false);	56✔
63	if (r < 0)	56✔
64	log_debug_errno(r, "Failed to turn off SO_PASSRIGHTS, ignoring: %m");	56✔
65
66	uctrl = new(UdevCtrl, 1);	56✔
67	if (!uctrl)	56✔
68	return -ENOMEM;
69
70	*uctrl = (UdevCtrl) {	112✔
71	.n_ref = 1,
72	.sock = fd >= 0 ? fd : TAKE_FD(sock),	56✔
73	.sock_connect = -EBADF,
74	.bound = fd >= 0,	56✔
75	};
76
77	uctrl->saddr.un = (struct sockaddr_un) {	56✔
78	.sun_family = AF_UNIX,
79	.sun_path = "/run/udev/control",
80	};
81
82	uctrl->addrlen = sockaddr_un_len(&uctrl->saddr.un);	56✔
83
84	*ret = TAKE_PTR(uctrl);	56✔
85	return 0;	56✔
86	}
87
88	int udev_ctrl_enable_receiving(UdevCtrl *uctrl) {	112✔
89	assert(uctrl);	112✔
90
91	if (uctrl->bound)	112✔
92	return 0;
93
UNCOV 94	(void) sockaddr_un_unlink(&uctrl->saddr.un);	×
UNCOV 95	if (bind(uctrl->sock, &uctrl->saddr.sa, uctrl->addrlen) < 0)	×
UNCOV 96	return log_error_errno(errno, "Failed to bind udev control socket: %m");	×
97
UNCOV 98	if (listen(uctrl->sock, 0) < 0)	×
UNCOV 99	return log_error_errno(errno, "Failed to listen udev control socket: %m");	×
100
UNCOV 101	uctrl->bound = true;	×
UNCOV 102	return 0;	×
103	}
104
105	static void udev_ctrl_disconnect(UdevCtrl *uctrl) {	56✔
106	if (!uctrl)	56✔
107	return;
108
109	uctrl->event_source_connect = sd_event_source_unref(uctrl->event_source_connect);	56✔
110	uctrl->sock_connect = safe_close(uctrl->sock_connect);	56✔
111	}
112
113	static UdevCtrl udev_ctrl_free(UdevCtrl uctrl) {	56✔
114	assert(uctrl);	56✔
115
116	udev_ctrl_disconnect(uctrl);	56✔
117
118	sd_event_source_unref(uctrl->event_source);	56✔
119	safe_close(uctrl->sock);	56✔
120
121	sd_event_unref(uctrl->event);	56✔
122	return mfree(uctrl);	56✔
123	}
124
125	DEFINE_TRIVIAL_REF_UNREF_FUNC(UdevCtrl, udev_ctrl, udev_ctrl_free);	112✔
126
127	int udev_ctrl_attach_event(UdevCtrl uctrl, sd_event event) {	56✔
128	int r;	56✔
129
130	assert_return(uctrl, -EINVAL);	56✔
131	assert_return(!uctrl->event, -EBUSY);	56✔
132
133	if (event)	56✔
134	uctrl->event = sd_event_ref(event);	56✔
135	else {
UNCOV 136	r = sd_event_default(&uctrl->event);	×
UNCOV 137	if (r < 0)	×
UNCOV 138	return r;	×
139	}
140
141	return 0;
142	}
143
144	sd_event_source udev_ctrl_get_event_source(UdevCtrl uctrl) {	56✔
145	assert(uctrl);	56✔
146
147	return uctrl->event_source;	56✔
148	}
149
150	static void udev_ctrl_disconnect_and_listen_again(UdevCtrl *uctrl) {	×
151	udev_ctrl_disconnect(uctrl);	×
152	udev_ctrl_unref(uctrl);	×
153	(void) sd_event_source_set_enabled(uctrl->event_source, SD_EVENT_ON);	×
154	/* We don't return NULL here because uctrl is not freed */
UNCOV 155	}	×
156
UNCOV 157	DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(UdevCtrl*, udev_ctrl_disconnect_and_listen_again, NULL);	×
158
UNCOV 159	static int udev_ctrl_connection_event_handler(sd_event_source s, int fd, uint32_t revents, void userdata) {	×
160	_cleanup_(udev_ctrl_disconnect_and_listen_againp) UdevCtrl *uctrl = NULL;	×
161	UdevCtrlMessageWire msg_wire;	×
UNCOV 162	struct iovec iov = IOVEC_MAKE(&msg_wire, sizeof(UdevCtrlMessageWire));	×
163	CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred))) control;	×
UNCOV 164	struct msghdr smsg = {	×
165	.msg_iov = &iov,
166	.msg_iovlen = 1,
167	.msg_control = &control,
168	.msg_controllen = sizeof(control),
169	};
170	struct ucred *cred;	×
UNCOV 171	ssize_t size;	×
172
173	assert(userdata);	×
174
175	/* When UDEV_CTRL_EXIT is received, manager unref udev_ctrl object.
176	* To avoid the object freed, let's increment the refcount. */
177	uctrl = udev_ctrl_ref(userdata);	×
178
UNCOV 179	size = recvmsg_safe(fd, &smsg, 0);	×
180	if (ERRNO_IS_NEG_TRANSIENT(size))	×
181	return 0;
UNCOV 182	if (size == -ECHRNG) {	×
183	log_warning_errno(size, "Got message with truncated control data (unexpected fds sent?), ignoring.");	×
UNCOV 184	return 0;	×
185	}
186	if (size == -EXFULL) {	×
187	log_warning_errno(size, "Got message with truncated payload data, ignoring.");	×
UNCOV 188	return 0;	×
189	}
190	if (size < 0)	×
191	return log_error_errno(size, "Failed to receive ctrl message: %m");	×
192
193	cmsg_close_all(&smsg);	×
194
UNCOV 195	if (size != sizeof(msg_wire)) {	×
196	log_warning("Received message with invalid length, ignoring");	×
197	return 0;	×
198	}
199
UNCOV 200	cred = CMSG_FIND_DATA(&smsg, SOL_SOCKET, SCM_CREDENTIALS, struct ucred);	×
201	if (!cred) {	×
202	log_warning("No sender credentials received, ignoring message");	×
203	return 0;	×
204	}
205
206	if (cred->uid != 0) {	×
UNCOV 207	log_warning("Invalid sender uid "UID_FMT", ignoring message", cred->uid);	×
UNCOV 208	return 0;	×
209	}
210
UNCOV 211	if (msg_wire.magic != UDEV_CTRL_MAGIC) {	×
UNCOV 212	log_warning("Message magic 0x%08x doesn't match, ignoring message", msg_wire.magic);	×
213	return 0;	×
214	}
215
UNCOV 216	if (msg_wire.type == _UDEV_CTRL_END_MESSAGES)	×
217	return 0;
218
219	if (uctrl->callback)	×
220	(void) uctrl->callback(uctrl, msg_wire.type, &msg_wire.value, uctrl->userdata);	×
221
222	/* Do not disconnect and wait for next message. */
223	uctrl = udev_ctrl_unref(uctrl);	×
224	return 0;
225	}
226
UNCOV 227	static int udev_ctrl_event_handler(sd_event_source s, int fd, uint32_t revents, void userdata) {	×
228	UdevCtrl *uctrl = ASSERT_PTR(userdata);	×
UNCOV 229	_cleanup_close_ int sock = -EBADF;	×
UNCOV 230	struct ucred ucred;	×
UNCOV 231	int r;	×
232
233	sock = accept4(fd, NULL, NULL, SOCK_CLOEXEC\|SOCK_NONBLOCK);	×
234	if (sock < 0) {	×
235	if (ERRNO_IS_ACCEPT_AGAIN(errno))	×
236	return 0;
237
238	return log_error_errno(errno, "Failed to accept ctrl connection: %m");	×
239	}
240
241	/* check peer credential of connection */
UNCOV 242	r = getpeercred(sock, &ucred);	×
UNCOV 243	if (r < 0) {	×
244	log_error_errno(r, "Failed to receive credentials of ctrl connection: %m");	×
245	return 0;	×
246	}
247
248	if (ucred.uid > 0) {	×
249	log_error("Invalid sender uid "UID_FMT", closing connection", ucred.uid);	×
250	return 0;	×
251	}
252
UNCOV 253	r = sd_event_add_io(uctrl->event, &uctrl->event_source_connect, sock, EPOLLIN, udev_ctrl_connection_event_handler, uctrl);	×
254	if (r < 0) {	×
UNCOV 255	log_error_errno(r, "Failed to create event source for udev control connection: %m");	×
UNCOV 256	return 0;	×
257	}
258
259	(void) sd_event_source_set_description(uctrl->event_source_connect, "udev-ctrl-connection");	×
260
261	/* Do not accept multiple connection. */
UNCOV 262	(void) sd_event_source_set_enabled(uctrl->event_source, SD_EVENT_OFF);	×
263
UNCOV 264	uctrl->sock_connect = TAKE_FD(sock);	×
UNCOV 265	return 0;	×
266	}
267
268	int udev_ctrl_start(UdevCtrl uctrl, udev_ctrl_handler_t callback, void userdata) {	56✔
269	int r;	56✔
270
271	assert(uctrl);	56✔
272
273	if (!uctrl->event) {	56✔
UNCOV 274	r = udev_ctrl_attach_event(uctrl, NULL);	×
UNCOV 275	if (r < 0)	×
276	return r;
277	}
278
279	r = udev_ctrl_enable_receiving(uctrl);	56✔
280	if (r < 0)	56✔
281	return r;
282
283	uctrl->callback = callback;	56✔
284	uctrl->userdata = userdata;	56✔
285
286	r = sd_event_add_io(uctrl->event, &uctrl->event_source, uctrl->sock, EPOLLIN, udev_ctrl_event_handler, uctrl);	56✔
287	if (r < 0)	56✔
288	return r;
289
290	(void) sd_event_source_set_description(uctrl->event_source, "udev-ctrl");	56✔
291
292	return 0;	56✔
293	}
294
UNCOV 295	int udev_ctrl_send(UdevCtrl uctrl, UdevCtrlMessageType type, const void data) {	×
UNCOV 296	UdevCtrlMessageWire ctrl_msg_wire = {	×
297	.version = "udev-" PROJECT_VERSION_STR,
298	.magic = UDEV_CTRL_MAGIC,
299	.type = type,
300	};
301
UNCOV 302	if (type == UDEV_CTRL_SET_ENV) {	×
303	assert(data);	×
304	strscpy(ctrl_msg_wire.value.buf, sizeof(ctrl_msg_wire.value.buf), data);	×
305	} else if (IN_SET(type, UDEV_CTRL_SET_LOG_LEVEL, UDEV_CTRL_SET_CHILDREN_MAX))	×
306	ctrl_msg_wire.value.intval = PTR_TO_INT(data);	×
307
UNCOV 308	if (!uctrl->connected) {	×
309	if (connect(uctrl->sock, &uctrl->saddr.sa, uctrl->addrlen) < 0)	×
310	return -errno;	×
UNCOV 311	uctrl->connected = true;	×
312	}
313
UNCOV 314	if (send(uctrl->sock, &ctrl_msg_wire, sizeof(ctrl_msg_wire), 0) < 0)	×
315	return -errno;	×
316
317	return 0;
318	}
319
UNCOV 320	int udev_ctrl_wait(UdevCtrl *uctrl, usec_t timeout) {	×
321	_cleanup_(sd_event_source_disable_unrefp) sd_event_source source_io = NULL, source_timeout = NULL;	×
UNCOV 322	int r;	×
323
UNCOV 324	assert(uctrl);	×
325
326	if (uctrl->sock < 0)	×
327	return 0;
UNCOV 328	if (!uctrl->connected)	×
329	return 0;
330
UNCOV 331	r = udev_ctrl_send(uctrl, _UDEV_CTRL_END_MESSAGES, NULL);	×
UNCOV 332	if (r < 0)	×
333	return r;
334
335	if (timeout == 0)	×
336	return 0;
337
UNCOV 338	if (!uctrl->event) {	×
339	r = udev_ctrl_attach_event(uctrl, NULL);	×
340	if (r < 0)	×
341	return r;
342	}
343
UNCOV 344	r = sd_event_add_io(uctrl->event, &source_io, uctrl->sock, EPOLLIN, NULL, INT_TO_PTR(0));	×
345	if (r < 0)	×
346	return r;
347
UNCOV 348	(void) sd_event_source_set_description(source_io, "udev-ctrl-wait-io");	×
349
350	if (timeout != USEC_INFINITY) {	×
UNCOV 351	r = sd_event_add_time_relative(	×
352	uctrl->event, &source_timeout, CLOCK_BOOTTIME,
353	timeout,
354	0, NULL, INT_TO_PTR(-ETIMEDOUT));
UNCOV 355	if (r < 0)	×
356	return r;
357
UNCOV 358	(void) sd_event_source_set_description(source_timeout, "udev-ctrl-wait-timeout");	×
359	}
360
UNCOV 361	return sd_event_loop(uctrl->event);	×
362	}

systemd / systemd / 15720680019

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