-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
-
- systemd 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.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <utmpx.h>
#include <errno.h>
-#include <assert.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
+#include <sys/time.h>
#include <sys/utsname.h>
-#include <fcntl.h>
#include <unistd.h>
-#include <sys/poll.h>
+#include <utmpx.h>
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "hostname-util.h"
#include "macro.h"
#include "path-util.h"
+#include "string-util.h"
+#include "terminal-util.h"
+#include "time-util.h"
+#include "user-util.h"
+#include "util.h"
#include "utmp-wtmp.h"
int utmp_get_runlevel(int *runlevel, int *previous) {
static void init_timestamp(struct utmpx *store, usec_t t) {
assert(store);
- zero(*store);
-
if (t <= 0)
t = now(CLOCK_REALTIME);
assert(store);
/* wtmp is a simple append-only file where each entry is
- simply appended to * the end; i.e. basically a log. */
+ simply appended to the end; i.e. basically a log. */
errno = 0;
updwtmpx(_PATH_WTMPX, store);
}
int utmp_put_shutdown(void) {
- struct utmpx store;
+ struct utmpx store = {};
init_entry(&store, 0);
}
int utmp_put_reboot(usec_t t) {
- struct utmpx store;
+ struct utmpx store = {};
init_entry(&store, t);
return id + l - sizeof(((struct utmpx*) NULL)->ut_id);
}
-int utmp_put_init_process(const char *id, pid_t pid, pid_t sid, const char *line) {
- struct utmpx store;
+int utmp_put_init_process(const char *id, pid_t pid, pid_t sid, const char *line, int ut_type, const char *user) {
+ struct utmpx store = {
+ .ut_type = INIT_PROCESS,
+ .ut_pid = pid,
+ .ut_session = sid,
+ };
+ int r;
assert(id);
init_timestamp(&store, 0);
- store.ut_type = INIT_PROCESS;
- store.ut_pid = pid;
- store.ut_session = sid;
-
+ /* ut_id needs only be nul-terminated if it is shorter than sizeof(ut_id) */
strncpy(store.ut_id, sanitize_id(id), sizeof(store.ut_id));
if (line)
strncpy(store.ut_line, basename(line), sizeof(store.ut_line));
- return write_entry_both(&store);
+ r = write_entry_both(&store);
+ if (r < 0)
+ return r;
+
+ if (IN_SET(ut_type, LOGIN_PROCESS, USER_PROCESS)) {
+ store.ut_type = LOGIN_PROCESS;
+ r = write_entry_both(&store);
+ if (r < 0)
+ return r;
+ }
+
+ if (ut_type == USER_PROCESS) {
+ store.ut_type = USER_PROCESS;
+ strncpy(store.ut_user, user, sizeof(store.ut_user)-1);
+ r = write_entry_both(&store);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
}
int utmp_put_dead_process(const char *id, pid_t pid, int code, int status) {
- struct utmpx lookup, store, store_wtmp, *found;
+ struct utmpx lookup = {
+ .ut_type = INIT_PROCESS /* looks for DEAD_PROCESS, LOGIN_PROCESS, USER_PROCESS, too */
+ }, store, store_wtmp, *found;
assert(id);
setutxent();
- zero(lookup);
- lookup.ut_type = INIT_PROCESS; /* looks for DEAD_PROCESS, LOGIN_PROCESS, USER_PROCESS, too */
+ /* ut_id needs only be nul-terminated if it is shorter than sizeof(ut_id) */
strncpy(lookup.ut_id, sanitize_id(id), sizeof(lookup.ut_id));
found = getutxid(&lookup);
int utmp_put_runlevel(int runlevel, int previous) {
- struct utmpx store;
+ struct utmpx store = {};
int r;
assert(runlevel > 0);
assert(tty);
assert(message);
- fd = open(tty, O_WRONLY|O_NDELAY|O_NOCTTY|O_CLOEXEC);
+ fd = open(tty, O_WRONLY|O_NONBLOCK|O_NOCTTY|O_CLOEXEC);
if (fd < 0 || !isatty(fd))
return -errno;
return 0;
}
-int utmp_wall(const char *message, bool (*match_tty)(const char *tty)) {
- _cleanup_free_ char *text = NULL, *hn = NULL, *un = NULL, *tty = NULL;
+int utmp_wall(
+ const char *message,
+ const char *username,
+ const char *origin_tty,
+ bool (*match_tty)(const char *tty, void *userdata),
+ void *userdata) {
+
+ _cleanup_free_ char *text = NULL, *hn = NULL, *un = NULL, *stdin_tty = NULL;
char date[FORMAT_TIMESTAMP_MAX];
struct utmpx *u;
int r;
hn = gethostname_malloc();
- un = getlogname_malloc();
- if (!hn || !un)
+ if (!hn)
return -ENOMEM;
+ if (!username) {
+ un = getlogname_malloc();
+ if (!un)
+ return -ENOMEM;
+ }
- getttyname_harder(STDIN_FILENO, &tty);
+ if (!origin_tty) {
+ getttyname_harder(STDIN_FILENO, &stdin_tty);
+ origin_tty = stdin_tty;
+ }
if (asprintf(&text,
"\a\r\n"
"Broadcast message from %s@%s%s%s (%s):\r\n\r\n"
"%s\r\n\r\n",
- un, hn,
- tty ? " on " : "", strempty(tty),
+ un ?: username, hn,
+ origin_tty ? " on " : "", strempty(origin_tty),
format_timestamp(date, sizeof(date), now(CLOCK_REALTIME)),
message) < 0)
return -ENOMEM;
if (u->ut_type != USER_PROCESS || u->ut_user[0] == 0)
continue;
- /* this access is fine, because strlen("/dev/") << 32 (UT_LINESIZE) */
+ /* this access is fine, because STRLEN("/dev/") << 32 (UT_LINESIZE) */
if (path_startswith(u->ut_line, "/dev/"))
path = u->ut_line;
else {
path = buf;
}
- if (!match_tty || match_tty(path)) {
+ if (!match_tty || match_tty(path, userdata)) {
q = write_to_terminal(path, text);
if (q < 0)
r = q;
projects / thirdparty / systemd.git / blobdiff