tree-wide: drop 'This file is part of systemd' blurb

[elogind.git] / src / login / logind-seat.c

diff --git a/src/login/logind-seat.c b/src/login/logind-seat.c
index 813ab153e62b94e303ea0d70540560cefa49b45e..edfbf874304de64912844c5399a6d0fb981cfe8d 100644 (file)
--- a/src/login/logind-seat.c
+++ b/src/login/logind-seat.c
@@ -1,26 +1,11 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
-  This file is part of systemd.
-
   Copyright 2011 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 <errno.h>
 #include <fcntl.h>
+#include <stdio_ext.h>
 #include <string.h>
 #include <unistd.h>
 
@@ -29,11 +14,12 @@
 #include "alloc-util.h"
 #include "fd-util.h"
 #include "fileio.h"
-#include "formats-util.h"
+#include "format-util.h"
 #include "logind-acl.h"
 #include "logind-seat.h"
 #include "mkdir.h"
 #include "parse-util.h"
+#include "stdio-util.h"
 #include "string-util.h"
 #include "terminal-util.h"
 #include "util.h"
@@ -49,18 +35,15 @@ Seat *seat_new(Manager *m, const char *id) {
                 return NULL;
 
         s->state_file = strappend("/run/systemd/seats/", id);
-        if (!s->state_file) {
-                free(s);
-                return NULL;
-        }
+        if (!s->state_file)
+                return mfree(s);
 
         s->id = basename(s->state_file);
         s->manager = m;
 
         if (hashmap_put(m->seats, s->id, s) < 0) {
                 free(s->state_file);
-                free(s);
-                return NULL;
+                return mfree(s);
         }
 
         return s;
@@ -97,7 +80,7 @@ int seat_save(Seat *s) {
         if (!s->started)
                 return 0;
 
-        r = mkdir_safe_label("/run/systemd/seats", 0755, 0, 0);
+        r = mkdir_safe_label("/run/systemd/seats", 0755, 0, 0, MKDIR_WARN_MODE);
         if (r < 0)
                 goto fail;
 
@@ -105,7 +88,8 @@ int seat_save(Seat *s) {
         if (r < 0)
                 goto fail;
 
-        fchmod(fileno(f), 0644);
+        (void) __fsetlocking(f, FSETLOCKING_BYCALLER);
+        (void) fchmod(fileno(f), 0644);
 
         fprintf(f,
                 "# This is private data. Do not parse.\n"
@@ -182,7 +166,7 @@ static int vt_allocate(unsigned int vtnr) {
 
         assert(vtnr >= 1);
 
-        snprintf(p, sizeof(p), "/dev/tty%u", vtnr);
+        xsprintf(p, "/dev/tty%u", vtnr);
         fd = open_terminal(p, O_RDWR|O_NOCTTY|O_CLOEXEC);
         if (fd < 0)
                 return -errno;
@@ -369,7 +353,6 @@ int seat_active_vt_changed(Seat *s, unsigned int vtnr) {
         }
 
         r = seat_set_active(s, new_active);
-
 #if 0 /// elogind does not spawn autovt
         manager_spawn_autovt(s->manager, vtnr);
 #endif // 0
@@ -388,7 +371,8 @@ int seat_read_active_vt(Seat *s) {
         if (!seat_has_vts(s))
                 return 0;
 
-        lseek(s->manager->console_active_fd, SEEK_SET, 0);
+        if (lseek(s->manager->console_active_fd, SEEK_SET, 0) < 0)
+                return log_error_errno(errno, "lseek on console_active_fd failed: %m");
 
         k = read(s->manager->console_active_fd, t, sizeof(t)-1);
         if (k <= 0) {
@@ -405,10 +389,8 @@ int seat_read_active_vt(Seat *s) {
         }
 
         r = safe_atou(t+3, &vtnr);
-        if (r < 0) {
-                log_error("Failed to parse VT number %s", t+3);
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to parse VT number \"%s\": %m", t+3);
 
         if (!vtnr) {
                 log_error("VT number invalid: %s", t+3);
@@ -425,10 +407,9 @@ int seat_start(Seat *s) {
                 return 0;
 
         log_struct(LOG_INFO,
-                   LOG_MESSAGE_ID(SD_MESSAGE_SEAT_START),
+                   "MESSAGE_ID=" SD_MESSAGE_SEAT_START_STR,
                    "SEAT_ID=%s", s->id,
-                   LOG_MESSAGE("New seat %s.", s->id),
-                   NULL);
+                   LOG_MESSAGE("New seat %s.", s->id));
 
         /* Initialize VT magic stuff */
 #if 0 /// elogind does not support autospawning vts
@@ -455,10 +436,9 @@ int seat_stop(Seat *s, bool force) {
 
         if (s->started)
                 log_struct(LOG_INFO,
-                           LOG_MESSAGE_ID(SD_MESSAGE_SEAT_STOP),
+                           "MESSAGE_ID=" SD_MESSAGE_SEAT_STOP_STR,
                            "SEAT_ID=%s", s->id,
-                           LOG_MESSAGE("Removed seat %s.", s->id),
-                           NULL);
+                           LOG_MESSAGE("Removed seat %s.", s->id));
 
         seat_stop_sessions(s, force);
 
@@ -552,8 +532,6 @@ int seat_attach_session(Seat *s, Session *session) {
         LIST_PREPEND(sessions_by_seat, s->sessions, session);
         seat_assign_position(s, session);
 
-        seat_send_changed(s, "Sessions", NULL);
-
         /* On seats with VTs, the VT logic defines which session is active. On
          * seats without VTs, we automatically activate new sessions. */
         if (!seat_has_vts(s))
@@ -571,8 +549,7 @@ void seat_complete_switch(Seat *s) {
         if (!s->pending_switch)
                 return;
 
-        session = s->pending_switch;
-        s->pending_switch = NULL;
+        session = TAKE_PTR(s->pending_switch);
 
         seat_set_active(s, session);
 }
@@ -650,16 +627,16 @@ int seat_get_idle_hint(Seat *s, dual_timestamp *t) {
         return idle_hint;
 }
 
-bool seat_check_gc(Seat *s, bool drop_not_started) {
+bool seat_may_gc(Seat *s, bool drop_not_started) {
         assert(s);
 
         if (drop_not_started && !s->started)
-                return false;
+                return true;
 
         if (seat_is_seat0(s))
-                return true;
+                return false;
 
-        return seat_has_master_device(s);
+        return !seat_has_master_device(s);
 }
 
 void seat_add_to_gc_queue(Seat *s) {
@@ -677,8 +654,7 @@ static bool seat_name_valid_char(char c) {
                 (c >= 'a' && c <= 'z') ||
                 (c >= 'A' && c <= 'Z') ||
                 (c >= '0' && c <= '9') ||
-                c == '-' ||
-                c == '_';
+                IN_SET(c, '-', '_');
 }
 
 bool seat_name_is_valid(const char *name) {