man: add entry about SpeedMeter=

Closes #14002.

man/networkd.conf.xml

@@ -42,6 +42,28 @@
 
   <xi:include href="standard-conf.xml" xpointer="main-conf" />
 
+  <refsect1>
+    <title>[Network] Section Options</title>
+
+    <para>The following options are available in the <literal>[Network]</literal> section:</para>
+
+    <variablelist class='network-directives'>
+      <varlistentry>
+        <term><varname>SpeedMeter=</varname></term>
+        <listitem><para>Takes a boolean. If set to yes, then <command>systemd-networkd</command>
+        measures the traffic of each interface, and
+        <command>networkctl status <replaceable>INTERFACE</replaceable> shows the measured speed.
+        </command>Defaults to no.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><varname>SpeedMeterIntervalSec=</varname></term>
+        <listitem><para>Specifies the time interval to calculate the traffic speed of each interface.
+        If <varname>SpeedMeter=no</varname>, the value is ignored. Defaults to 10sec.</para></listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
   <refsect1>
     <title>[DHCP] Section Options</title>
 

man/systemd-id128.xml

@@ -99,6 +99,16 @@
         </listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><option>-u</option></term>
+        <term><option>--uuid</option></term>
+
+        <listitem><para>Generate output as an UUID formatted in the "canonical representation", with five
+        groups of digits seperated by hyphens. See the
+        <ulink url="https://en.wikipedia.org/wiki/Universally_unique_identifier#Format">wikipedia</ulink>
+        for more discussion.</para></listitem>
+      </varlistentry>
+
       <xi:include href="standard-options.xml" xpointer="help" />
       <xi:include href="standard-options.xml" xpointer="version" />
     </variablelist>

src/activate/activate.c

@@ -332,9 +332,9 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...]\n\n"
-               "Listen on sockets and launch child on connection.\n\n"
-               "Options:\n"
+        printf("%s [OPTIONS...]\n"
+               "\n%sListen on sockets and launch child on connection.%s\n"
+               "\nOptions:\n"
                "  -h --help                  Show this help and exit\n"
                "     --version               Print version string and exit\n"
                "  -l --listen=ADDR           Listen for raw connections at ADDR\n"
@@ -347,6 +347,7 @@ static int help(void) {
                "\nNote: file descriptors from sd_listen_fds() will be passed through.\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 

src/analyze/analyze.c

@@ -2243,26 +2243,8 @@ static int help(int argc, char *argv[], void *userdata) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Profile systemd, show unit dependencies, check unit files.\n\n"
-               "  -h --help                Show this help\n"
-               "     --version             Show package version\n"
-               "     --no-pager            Do not pipe output into a pager\n"
-               "     --system              Operate on system systemd instance\n"
-               "     --user                Operate on user systemd instance\n"
-               "     --global              Operate on global user configuration\n"
-               "  -H --host=[USER@]HOST    Operate on remote host\n"
-               "  -M --machine=CONTAINER   Operate on local container\n"
-               "     --order               Show only order in the graph\n"
-               "     --require             Show only requirement in the graph\n"
-               "     --from-pattern=GLOB   Show only origins in the graph\n"
-               "     --to-pattern=GLOB     Show only destinations in the graph\n"
-               "     --fuzz=SECONDS        Also print services which finished SECONDS earlier\n"
-               "                           than the latest in the branch\n"
-               "     --man[=BOOL]          Do [not] check for existence of man pages\n"
-               "     --generators[=BOOL]   Do [not] run unit generators (requires privileges)\n"
-               "     --iterations=N        Show the specified number of iterations\n"
-               "     --base-time=TIMESTAMP Calculate calendar times relative to specified time\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sProfile systemd, show unit dependencies, check unit files.%s\n"
                "\nCommands:\n"
                "  time                     Print time spent in the kernel\n"
                "  blame                    Print list of running units ordered by time to init\n"
@@ -2284,8 +2266,29 @@ static int help(int argc, char *argv[], void *userdata) {
                "  timestamp TIMESTAMP...   Validate a timestamp\n"
                "  timespan SPAN...         Validate a time span\n"
                "  security [UNIT...]       Analyze security of unit\n"
+               "\nOptions:\n"
+               "  -h --help                Show this help\n"
+               "     --version             Show package version\n"
+               "     --no-pager            Do not pipe output into a pager\n"
+               "     --system              Operate on system systemd instance\n"
+               "     --user                Operate on user systemd instance\n"
+               "     --global              Operate on global user configuration\n"
+               "  -H --host=[USER@]HOST    Operate on remote host\n"
+               "  -M --machine=CONTAINER   Operate on local container\n"
+               "     --order               Show only order in the graph\n"
+               "     --require             Show only requirement in the graph\n"
+               "     --from-pattern=GLOB   Show only origins in the graph\n"
+               "     --to-pattern=GLOB     Show only destinations in the graph\n"
+               "     --fuzz=SECONDS        Also print services which finished SECONDS earlier\n"
+               "                           than the latest in the branch\n"
+               "     --man[=BOOL]          Do [not] check for existence of man pages\n"
+               "     --generators[=BOOL]   Do [not] run unit generators (requires privileges)\n"
+               "     --iterations=N        Show the specified number of iterations\n"
+               "     --base-time=TIMESTAMP Calculate calendar times relative to specified time\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
                , dot_link
                , link
         );

src/boot/bless-boot.c

@@ -13,6 +13,8 @@
 #include "main-func.h"
 #include "parse-util.h"
 #include "path-util.h"
+#include "pretty-print.h"
+#include "terminal-util.h"
 #include "util.h"
 #include "verbs.h"
 #include "virt.h"
@@ -22,19 +24,29 @@ static char **arg_path = NULL;
 STATIC_DESTRUCTOR_REGISTER(arg_path, strv_freep);
 
 static int help(int argc, char *argv[], void *userdata) {
+        _cleanup_free_ char *link = NULL;
+        int r;
 
-        printf("%s [COMMAND] [OPTIONS...]\n"
-               "\n"
-               "Mark the boot process as good or bad.\n\n"
+        r = terminal_urlify_man("systemd-bless-boot.service", "8", &link);
+        if (r < 0)
+                return log_oom();
+
+        printf("%s [OPTIONS...] COMMAND\n"
+               "\n%sMark the boot process as good or bad.%s\n"
+               "\nCommands:\n"
+               "     good            Mark this boot as good\n"
+               "     bad             Mark this boot as bad\n"
+               "     indeterminate   Undo any marking as good or bad\n"
+               "\nOptions:\n"
                "  -h --help          Show this help\n"
                "     --version       Print version\n"
                "     --path=PATH     Path to the $BOOT partition (may be used multiple times)\n"
-               "\n"
-               "Commands:\n"
-               "     good            Mark this boot as good\n"
-               "     bad             Mark this boot as bad\n"
-               "     indeterminate   Undo any marking as good or bad\n",
-               program_invocation_short_name);
+               "\nSee the %s for details.\n"
+               , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
+               , link
+        );
 
         return 0;
 }

src/boot/boot-check-no-failures.c

@@ -11,16 +11,28 @@
 #include "bus-error.h"
 #include "log.h"
 #include "main-func.h"
+#include "pretty-print.h"
+#include "terminal-util.h"
 #include "util.h"
 
 static int help(void) {
+        _cleanup_free_ char *link = NULL;
+        int r;
 
-        printf("%s [COMMAND] [OPTIONS...]\n"
-               "\n"
-               "Verify system operational state.\n\n"
+        r = terminal_urlify_man("systemd-boot-check-no-failures.service", "8", &link);
+        if (r < 0)
+                return log_oom();
+
+        printf("%s [OPTIONS...]\n"
+               "\n%sVerify system operational state.%s\n\n"
                "  -h --help          Show this help\n"
-               "     --version       Print version\n",
-               program_invocation_short_name);
+               "     --version       Print version\n"
+               "\nSee the %s for details.\n"
+               , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
+               , link
+        );
 
         return 0;
 }

src/boot/bootctl.c

@@ -1032,8 +1032,8 @@ static int help(int argc, char *argv[], void *userdata) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [COMMAND] [OPTIONS...]\n\n"
-               "Install, update or remove the systemd-boot EFI boot manager.\n"
+        printf("%s  [OPTIONS...] COMMAND ...\n"
+               "\n%sInstall, update or remove the systemd-boot EFI boot manager.%s\n"
                "\nBoot Loader Commands:\n"
                "     status            Show status of installed systemd-boot and EFI variables\n"
                "     install           Install systemd-boot to the ESP and EFI variables\n"
@@ -1046,6 +1046,7 @@ static int help(int argc, char *argv[], void *userdata) {
                "     list              List boot loader entries\n"
                "     set-default ID    Set default boot loader entry\n"
                "     set-oneshot ID    Set default boot loader entry, for next boot only\n"
+               "\nOptions:\n"
                "  -h --help            Show this help\n"
                "     --version         Print version\n"
                "     --esp-path=PATH   Path to the EFI System Partition (ESP)\n"
@@ -1056,6 +1057,8 @@ static int help(int argc, char *argv[], void *userdata) {
                "     --no-pager        Do not pipe output into a pager\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
                , link);
 
         return 0;

src/busctl/busctl.c

@@ -2228,9 +2228,9 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Introspect the bus.%s\n\n"
-               "Commands:\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sIntrospect the D-Bus IPC bus.%s\n"
+               "\nCommands:\n"
                "  list                     List bus names\n"
                "  status [SERVICE]         Show bus service, process or bus owner credentials\n"
                "  monitor [SERVICE...]     Show bus traffic\n"
@@ -2277,8 +2277,8 @@ static int help(void) {
                "                           system\n"
                "     --destination=SERVICE Destination service of a signal\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/core/mount.c

@@ -409,9 +409,13 @@ static bool mount_is_extrinsic(Mount *m) {
         if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */
                 return true;
 
+        if (UNIT(m)->perpetual) /* All perpetual units never change state */
+                return true;
+
         if (PATH_IN_SET(m->where,  /* Don't bother with the OS data itself */
-                        "/",
-                        "/usr"))
+                        "/",       /* (strictly speaking redundant: should already be covered by the perpetual flag check above) */
+                        "/usr",
+                        "/etc"))
                 return true;
 
         if (PATH_STARTSWITH_SET(m->where,
@@ -546,6 +550,32 @@ static int mount_verify(Mount *m) {
         return 0;
 }
 
+static int mount_add_non_exec_dependencies(Mount *m) {
+        int r;
+        assert(m);
+
+        /* Adds in all dependencies directly responsible for ordering the mount, as opposed to dependencies
+         * resulting from the ExecContext and such. */
+
+        r = mount_add_device_dependencies(m);
+        if (r < 0)
+                return r;
+
+        r = mount_add_mount_dependencies(m);
+        if (r < 0)
+                return r;
+
+        r = mount_add_quota_dependencies(m);
+        if (r < 0)
+                return r;
+
+        r = mount_add_default_dependencies(m);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
 static int mount_add_extras(Mount *m) {
         Unit *u = UNIT(m);
         int r;
@@ -573,18 +603,6 @@ static int mount_add_extras(Mount *m) {
                         return r;
         }
 
-        r = mount_add_device_dependencies(m);
-        if (r < 0)
-                return r;
-
-        r = mount_add_mount_dependencies(m);
-        if (r < 0)
-                return r;
-
-        r = mount_add_quota_dependencies(m);
-        if (r < 0)
-                return r;
-
         r = unit_patch_contexts(u);
         if (r < 0)
                 return r;
@@ -597,7 +615,7 @@ static int mount_add_extras(Mount *m) {
         if (r < 0)
                 return r;
 
-        r = mount_add_default_dependencies(m);
+        r = mount_add_non_exec_dependencies(m);
         if (r < 0)
                 return r;
 
@@ -1570,7 +1588,7 @@ static int mount_setup_existing_unit(
 
                 unit_remove_dependencies(u, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT);
 
-                r = mount_add_extras(MOUNT(u));
+                r = mount_add_non_exec_dependencies(MOUNT(u));
                 if (r < 0)
                         return r;
         }

src/coredump/coredumpctl.c

@@ -145,14 +145,14 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...]\n\n"
-               "List or retrieve coredumps from the journal.%s\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sList or retrieve coredumps from the journal.%s\n"
                "\nCommands:\n"
                "  list [MATCHES...]  List available coredumps (default)\n"
                "  info [MATCHES...]  Show detailed information about one or more coredumps\n"
                "  dump [MATCHES...]  Print first matching coredump to stdout\n"
                "  debug [MATCHES...] Start a debugger for the first matching coredump\n"
-               "\nFlags:\n"
+               "\nOptions:\n"
                "  -h --help              Show this help\n"
                "     --version           Print version string\n"
                "     --no-pager          Do not pipe output into a pager\n"
@@ -167,8 +167,8 @@ static int help(void) {
                "  -D --directory=DIR     Use journal files from directory\n\n"
                "  -q --quiet             Do not show info messages and privilege warning\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/hostname/hostnamectl.c

@@ -310,8 +310,8 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] COMMAND ...\n\n"
-               "Query or change system hostname.%s\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sQuery or change system hostname.%s\n"
                "\nCommands:\n"
                "  status                 Show current hostname settings\n"
                "  set-hostname NAME      Set system hostname\n"
@@ -329,8 +329,8 @@ static int help(void) {
                "     --static            Only set static hostname\n"
                "     --pretty            Only set pretty hostname\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/hwdb/hwdb.c

@@ -9,6 +9,7 @@
 #include "main-func.h"
 #include "pretty-print.h"
 #include "selinux-util.h"
+#include "terminal-util.h"
 #include "util.h"
 #include "verbs.h"
 
@@ -32,18 +33,21 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s OPTIONS COMMAND\n\n"
-               "Update or query the hardware database.\n\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sUpdate or query the hardware database.%s\n"
+               "\nCommands:\n"
+               "  update          Update the hwdb database\n"
+               "  query MODALIAS  Query database and print result\n"
+               "\nOptions:\n"
                "  -h --help       Show this help\n"
                "     --version    Show package version\n"
                "  -s --strict     When updating, return non-zero exit value on any parsing error\n"
                "     --usr        Generate in " UDEVLIBEXECDIR " instead of /etc/udev\n"
                "  -r --root=PATH  Alternative root path in the filesystem\n\n"
-               "Commands:\n"
-               "  update          Update the hwdb database\n"
-               "  query MODALIAS  Query database and print result\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
                , link
         );
 

src/id128/id128.c

@@ -7,14 +7,15 @@
 #include "id128-print.h"
 #include "main-func.h"
 #include "pretty-print.h"
+#include "terminal-util.h"
 #include "util.h"
 #include "verbs.h"
 
-static bool arg_pretty = false;
-static sd_id128_t arg_app = {};
+static Id128PrettyPrintMode arg_mode = ID128_PRINT_ID128;
+static sd_id128_t arg_app = SD_ID128_NULL;
 
 static int verb_new(int argc, char **argv, void *userdata) {
-        return id128_print_new(arg_pretty);
+        return id128_print_new(arg_mode);
 }
 
 static int verb_machine_id(int argc, char **argv, void *userdata) {
@@ -29,7 +30,7 @@ static int verb_machine_id(int argc, char **argv, void *userdata) {
                 return log_error_errno(r, "Failed to get %smachine-ID: %m",
                                        sd_id128_is_null(arg_app) ? "" : "app-specific ");
 
-        return id128_pretty_print(id, arg_pretty);
+        return id128_pretty_print(id, arg_mode);
 }
 
 static int verb_boot_id(int argc, char **argv, void *userdata) {
@@ -44,7 +45,7 @@ static int verb_boot_id(int argc, char **argv, void *userdata) {
                 return log_error_errno(r, "Failed to get %sboot-ID: %m",
                                        sd_id128_is_null(arg_app) ? "" : "app-specific ");
 
-        return id128_pretty_print(id, arg_pretty);
+        return id128_pretty_print(id, arg_mode);
 }
 
 static int verb_invocation_id(int argc, char **argv, void *userdata) {
@@ -59,7 +60,7 @@ static int verb_invocation_id(int argc, char **argv, void *userdata) {
         if (r < 0)
                 return log_error_errno(r, "Failed to get invocation-ID: %m");
 
-        return id128_pretty_print(id, arg_pretty);
+        return id128_pretty_print(id, arg_mode);
 }
 
 static int help(void) {
@@ -70,19 +71,22 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...] {COMMAND}\n\n"
-               "Generate and print id128 strings.\n\n"
-               "  -h --help               Show this help\n"
-               "  -p --pretty             Generate samples of program code\n"
-               "  -a --app-specific=ID    Generate app-specific IDs\n"
+        printf("%s [OPTIONS...] COMMAND\n\n"
+               "%sGenerate and print 128bit identifiers.%s\n"
                "\nCommands:\n"
                "  new                     Generate a new id128 string\n"
                "  machine-id              Print the ID of current machine\n"
                "  boot-id                 Print the ID of current boot\n"
                "  invocation-id           Print the ID of current invocation\n"
                "  help                    Show this help\n"
+               "\nOptions:\n"
+               "  -h --help               Show this help\n"
+               "  -p --pretty             Generate samples of program code\n"
+               "  -a --app-specific=ID    Generate app-specific IDs\n"
+               "  -u --uuid               Output in UUID format\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 
@@ -103,6 +107,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "version",      no_argument,       NULL, ARG_VERSION      },
                 { "pretty",       no_argument,       NULL, 'p'              },
                 { "app-specific", required_argument, NULL, 'a'              },
+                { "uuid",         no_argument,       NULL, 'u'              },
                 {},
         };
 
@@ -111,7 +116,7 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "hpa:", options, NULL)) >= 0)
+        while ((c = getopt_long(argc, argv, "hpa:u", options, NULL)) >= 0)
                 switch (c) {
 
                 case 'h':
@@ -121,7 +126,7 @@ static int parse_argv(int argc, char *argv[]) {
                         return version();
 
                 case 'p':
-                        arg_pretty = true;
+                        arg_mode = ID128_PRINT_PRETTY;
                         break;
 
                 case 'a':
@@ -130,6 +135,10 @@ static int parse_argv(int argc, char *argv[]) {
                                 return log_error_errno(r, "Failed to parse \"%s\" as application-ID: %m", optarg);
                         break;
 
+                case 'u':
+                        arg_mode = ID128_PRINT_UUID;
+                        break;
+
                 case '?':
                         return -EINVAL;
 

src/journal/cat.c

@@ -16,6 +16,7 @@
 #include "pretty-print.h"
 #include "string-util.h"
 #include "syslog-util.h"
+#include "terminal-util.h"
 #include "util.h"
 
 static const char *arg_identifier = NULL;
@@ -31,8 +32,8 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Execute process with stdout/stderr connected to the journal.\n\n"
+        printf("%s [OPTIONS...] COMMAND ...\n"
+               "\n%sExecute process with stdout/stderr connected to the journal.%s\n\n"
                "  -h --help                      Show this help\n"
                "     --version                   Show package version\n"
                "  -t --identifier=STRING         Set syslog identifier\n"
@@ -41,6 +42,7 @@ static int help(void) {
                "     --level-prefix=BOOL         Control whether level prefix shall be parsed\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 

src/journal/journalctl.c

@@ -314,7 +314,7 @@ static int help(void) {
                 return log_oom();
 
         printf("%s [OPTIONS...] [MATCHES...]\n\n"
-               "Query the journal.\n\n"
+               "%sQuery the journal.%s\n\n"
                "Options:\n"
                "     --system                Show the system journal\n"
                "     --user                  Show the user journal for the current user\n"
@@ -381,6 +381,7 @@ static int help(void) {
                "     --setup-keys            Generate a new FSS key pair\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 
@@ -2047,7 +2048,7 @@ int main(int argc, char *argv[]) {
         switch (arg_action) {
 
         case ACTION_NEW_ID128:
-                r = id128_print_new(true);
+                r = id128_print_new(ID128_PRINT_PRETTY);
                 goto finish;
 
         case ACTION_SETUP_KEYS:

src/libsystemd-network/sd-dhcp-client.c

@@ -241,6 +241,7 @@ int sd_dhcp_client_set_mac(
 
         DHCP_CLIENT_DONT_DESTROY(client);
         bool need_restart = false;
+        int r;
 
         assert_return(client, -EINVAL);
         assert_return(addr, -EINVAL);
@@ -268,8 +269,11 @@ int sd_dhcp_client_set_mac(
         client->mac_addr_len = addr_len;
         client->arp_type = arp_type;
 
-        if (need_restart && client->state != DHCP_STATE_STOPPED)
-                sd_dhcp_client_start(client);
+        if (need_restart && client->state != DHCP_STATE_STOPPED) {
+                r = sd_dhcp_client_start(client);
+                if (r < 0)
+                        return log_dhcp_client_errno(client, r, "Failed to restart DHCPv4 client: %m");
+        }
 
         return 0;
 }
@@ -305,6 +309,7 @@ int sd_dhcp_client_set_client_id(
 
         DHCP_CLIENT_DONT_DESTROY(client);
         bool need_restart = false;
+        int r;
 
         assert_return(client, -EINVAL);
         assert_return(data, -EINVAL);
@@ -337,8 +342,11 @@ int sd_dhcp_client_set_client_id(
         memcpy(&client->client_id.raw.data, data, data_len);
         client->client_id_len = data_len + sizeof (client->client_id.type);
 
-        if (need_restart && client->state != DHCP_STATE_STOPPED)
-                sd_dhcp_client_start(client);
+        if (need_restart && client->state != DHCP_STATE_STOPPED) {
+                r = sd_dhcp_client_start(client);
+                if (r < 0)
+                        return log_dhcp_client_errno(client, r, "Failed to restart DHCPv4 client: %m");
+        }
 
         return 0;
 }
@@ -368,7 +376,7 @@ static int dhcp_client_set_iaid_duid_internal(
         if (duid) {
                 r = dhcp_validate_duid_len(duid_type, duid_len, true);
                 if (r < 0)
-                        return r;
+                        return log_dhcp_client_errno(client, r, "Failed to validate length of DUID: %m");
         }
 
         zero(client->client_id);
@@ -383,7 +391,7 @@ static int dhcp_client_set_iaid_duid_internal(
                                                      true,
                                                      &client->client_id.ns.iaid);
                         if (r < 0)
-                                return r;
+                                return log_dhcp_client_errno(client, r, "Failed to set IAID: %m");
                 }
         }
 
@@ -395,32 +403,32 @@ static int dhcp_client_set_iaid_duid_internal(
                 switch (duid_type) {
                 case DUID_TYPE_LLT:
                         if (client->mac_addr_len == 0)
-                                return -EOPNOTSUPP;
+                                return log_dhcp_client_errno(client, SYNTHETIC_ERRNO(EOPNOTSUPP), "Failed to set DUID-LLT, MAC address is not set.");
 
                         r = dhcp_identifier_set_duid_llt(&client->client_id.ns.duid, llt_time, client->mac_addr, client->mac_addr_len, client->arp_type, &len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp_client_errno(client, r, "Failed to set DUID-LLT: %m");
                         break;
                 case DUID_TYPE_EN:
                         r = dhcp_identifier_set_duid_en(&client->client_id.ns.duid, &len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp_client_errno(client, r, "Failed to set DUID-EN: %m");
                         break;
                 case DUID_TYPE_LL:
                         if (client->mac_addr_len == 0)
-                                return -EOPNOTSUPP;
+                                return log_dhcp_client_errno(client, SYNTHETIC_ERRNO(EOPNOTSUPP), "Failed to set DUID-LL, MAC address is not set.");
 
                         r = dhcp_identifier_set_duid_ll(&client->client_id.ns.duid, client->mac_addr, client->mac_addr_len, client->arp_type, &len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp_client_errno(client, r, "Failed to set DUID-LL: %m");
                         break;
                 case DUID_TYPE_UUID:
                         r = dhcp_identifier_set_duid_uuid(&client->client_id.ns.duid, &len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp_client_errno(client, r, "Failed to set DUID-UUID: %m");
                         break;
                 default:
-                        return -EINVAL;
+                        return log_dhcp_client_errno(client, SYNTHETIC_ERRNO(EINVAL), "Invalid DUID type");
                 }
 
         client->client_id_len = sizeof(client->client_id.type) + len +
@@ -429,7 +437,9 @@ static int dhcp_client_set_iaid_duid_internal(
         if (!IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_STOPPED)) {
                 log_dhcp_client(client, "Configured %sDUID, restarting.", iaid_append ? "IAID+" : "");
                 client_stop(client, SD_DHCP_CLIENT_EVENT_STOP);
-                sd_dhcp_client_start(client);
+                r = sd_dhcp_client_start(client);
+                if (r < 0)
+                        return log_dhcp_client_errno(client, r, "Failed to restart DHCPv4 client: %m");
         }
 
         return 0;

src/libsystemd-network/sd-dhcp6-client.c

@@ -232,7 +232,7 @@ static int dhcp6_client_set_duid_internal(
                 if (r < 0) {
                         r = dhcp_validate_duid_len(duid_type, duid_len, false);
                         if (r < 0)
-                                return r;
+                                return log_dhcp6_client_errno(client, r, "Failed to validate length of DUID: %m");
                         log_dhcp6_client(client, "Setting DUID of type %u with unexpected content", duid_type);
                 }
 
@@ -243,32 +243,32 @@ static int dhcp6_client_set_duid_internal(
                 switch (duid_type) {
                 case DUID_TYPE_LLT:
                         if (client->mac_addr_len == 0)
-                                return -EOPNOTSUPP;
+                                return log_dhcp6_client_errno(client, SYNTHETIC_ERRNO(EOPNOTSUPP), "Failed to set DUID-LLT, MAC address is not set.");
 
                         r = dhcp_identifier_set_duid_llt(&client->duid, llt_time, client->mac_addr, client->mac_addr_len, client->arp_type, &client->duid_len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp6_client_errno(client, r, "Failed to set DUID-LLT: %m");
                         break;
                 case DUID_TYPE_EN:
                         r = dhcp_identifier_set_duid_en(&client->duid, &client->duid_len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp6_client_errno(client, r, "Failed to set DUID-EN: %m");
                         break;
                 case DUID_TYPE_LL:
                         if (client->mac_addr_len == 0)
-                                return -EOPNOTSUPP;
+                                return log_dhcp6_client_errno(client, SYNTHETIC_ERRNO(EOPNOTSUPP), "Failed to set DUID-LL, MAC address is not set.");
 
                         r = dhcp_identifier_set_duid_ll(&client->duid, client->mac_addr, client->mac_addr_len, client->arp_type, &client->duid_len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp6_client_errno(client, r, "Failed to set DUID-LL: %m");
                         break;
                 case DUID_TYPE_UUID:
                         r = dhcp_identifier_set_duid_uuid(&client->duid, &client->duid_len);
                         if (r < 0)
-                                return r;
+                                return log_dhcp6_client_errno(client, r, "Failed to set DUID-UUID: %m");
                         break;
                 default:
-                        return -EINVAL;
+                        return log_dhcp6_client_errno(client, SYNTHETIC_ERRNO(EINVAL), "Invalid DUID type");
                 }
 
         return 0;

src/locale/localectl.c

@@ -383,16 +383,9 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] COMMAND ...\n\n"
-               "Query or change system locale and keyboard settings.%s\n\n"
-               "  -h --help                Show this help\n"
-               "     --version             Show package version\n"
-               "     --no-pager            Do not pipe output into a pager\n"
-               "     --no-ask-password     Do not prompt for password\n"
-               "  -H --host=[USER@]HOST    Operate on remote host\n"
-               "  -M --machine=CONTAINER   Operate on local container\n"
-               "     --no-convert          Don't convert keyboard mappings\n\n"
-               "Commands:\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sQuery or change system locale and keyboard settings.%s\n"
+               "\nCommands:\n"
                "  status                   Show current locale settings\n"
                "  set-locale LOCALE...     Set system locale\n"
                "  list-locales             Show known locales\n"
@@ -405,9 +398,17 @@ static int help(void) {
                "  list-x11-keymap-variants [LAYOUT]\n"
                "                           Show known X11 keyboard mapping variants\n"
                "  list-x11-keymap-options  Show known X11 keyboard mapping options\n"
+               "\nOptions:\n"
+               "  -h --help                Show this help\n"
+               "     --version             Show package version\n"
+               "     --no-pager            Do not pipe output into a pager\n"
+               "     --no-ask-password     Do not prompt for password\n"
+               "  -H --host=[USER@]HOST    Operate on remote host\n"
+               "  -M --machine=CONTAINER   Operate on local container\n"
+               "     --no-convert          Don't convert keyboard mappings\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/login/inhibit.c

@@ -20,6 +20,7 @@
 #include "process-util.h"
 #include "signal-util.h"
 #include "strv.h"
+#include "terminal-util.h"
 #include "user-util.h"
 #include "util.h"
 
@@ -158,8 +159,8 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
+        printf("%s [OPTIONS...] COMMAND ...\n"
+               "\n%sExecute a process while inhibiting shutdown/sleep/idle.%s\n\n"
                "  -h --help               Show this help\n"
                "     --version            Show package version\n"
                "     --no-pager           Do not pipe output into a pager\n"
@@ -174,6 +175,7 @@ static int help(void) {
                "     --list               List active inhibitors\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 

src/login/loginctl.c

@@ -1279,8 +1279,8 @@ static int help(int argc, char *argv[], void *userdata) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Send control commands to or query the login manager.%s\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sSend control commands to or query the login manager.%s\n"
                "\nSession Commands:\n"
                "  list-sessions            List sessions\n"
                "  session-status [ID...]   Show session status\n"
@@ -1291,23 +1291,23 @@ static int help(int argc, char *argv[], void *userdata) {
                "  lock-sessions            Screen lock all current sessions\n"
                "  unlock-sessions          Screen unlock all current sessions\n"
                "  terminate-session ID...  Terminate one or more sessions\n"
-               "  kill-session ID...       Send signal to processes of a session\n\n"
-               "User Commands:\n"
+               "  kill-session ID...       Send signal to processes of a session\n"
+               "\nUser Commands:\n"
                "  list-users               List users\n"
                "  user-status [USER...]    Show user status\n"
                "  show-user [USER...]      Show properties of users or the manager\n"
                "  enable-linger [USER...]  Enable linger state of one or more users\n"
                "  disable-linger [USER...] Disable linger state of one or more users\n"
                "  terminate-user USER...   Terminate all sessions of one or more users\n"
-               "  kill-user USER...        Send signal to processes of a user\n\n"
-               "Seat Commands:\n"
+               "  kill-user USER...        Send signal to processes of a user\n"
+               "\nSeat Commands:\n"
                "  list-seats               List seats\n"
                "  seat-status [NAME...]    Show seat status\n"
                "  show-seat [NAME...]      Show properties of seats or the manager\n"
                "  attach NAME DEVICE...    Attach one or more devices to a seat\n"
                "  flush-devices            Flush all device associations\n"
                "  terminate-seat NAME...   Terminate all sessions on one or more seats\n"
-               "\nOptions\n"
+               "\nOptions:\n"
                "  -h --help                Show this help\n"
                "     --version             Show package version\n"
                "     --no-pager            Do not pipe output into a pager\n"
@@ -1328,8 +1328,8 @@ static int help(int argc, char *argv[], void *userdata) {
                "                             json, json-pretty, json-sse, json-seq, cat,\n"
                "                             with-unit)\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/machine/machinectl.c

@@ -2690,9 +2690,9 @@ static int help(int argc, char *argv[], void *userdata) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Send control commands to or query the virtual machine and container\n"
-               "registration manager.%s\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sSend control commands to or query the virtual machine and container%s\n"
+               "%sregistration manager.%s\n"
                "\nMachine Commands:\n"
                "  list                        List running VMs and containers\n"
                "  status NAME...              Show VM/container details\n"
@@ -2732,7 +2732,7 @@ static int help(int argc, char *argv[], void *userdata) {
                "  export-raw NAME [FILE]      Export a RAW container or VM image locally\n"
                "  list-transfers              Show list of downloads in progress\n"
                "  cancel-transfer             Cancel a download\n"
-               "\nOptions\n"
+               "\nOptions:\n"
                "  -h --help                   Show this help\n"
                "     --version                Show package version\n"
                "     --no-pager               Do not pipe output into a pager\n"
@@ -2762,8 +2762,10 @@ static int help(int argc, char *argv[], void *userdata) {
                "                              checksum, signature)\n"
                "     --force                  Download image even if already exists\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/network/networkctl.c

@@ -1887,8 +1887,8 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...]\n\n"
-               "Query and control the networking subsystem.%s\n"
+        printf("%s [OPTIONS...] COMMAND\n\n"
+               "%sQuery and control the networking subsystem.%s\n"
                "\nCommands:\n"
                "  list [PATTERN...]      List links\n"
                "  status [PATTERN...]    Show link status\n"
@@ -1898,7 +1898,7 @@ static int help(void) {
                "  renew DEVICES...       Renew dynamic configurations\n"
                "  reconfigure DEVICES... Reconfigure interfaces\n"
                "  reload                 Reload .network and .netdev files\n"
-               "\nOptions\n"
+               "\nOptions:\n"
                "  -h --help              Show this help\n"
                "     --version           Show package version\n"
                "     --no-pager          Do not pipe output into a pager\n"
@@ -1906,8 +1906,8 @@ static int help(void) {
                "  -a --all               Show status for all links\n"
                "  -s --stats             Show detailed link statics\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/network/networkd-dhcp-server.c

@@ -200,14 +200,14 @@ int dhcp4_server_configure(Link *link) {
 
         address = link_find_dhcp_server_address(link);
         if (!address)
-                return log_link_warning_errno(link, SYNTHETIC_ERRNO(EBUSY),
-                                              "Failed to find suitable address for DHCPv4 server instance.");
+                return log_link_error_errno(link, SYNTHETIC_ERRNO(EBUSY),
+                                            "Failed to find suitable address for DHCPv4 server instance.");
 
         /* use the server address' subnet as the pool */
         r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen,
                                           link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size);
         if (r < 0)
-                return r;
+                return log_link_error_errno(link, r, "Failed to configure address pool for DHCPv4 server instance: %m");
 
         /* TODO:
         r = sd_dhcp_server_set_router(link->dhcp_server, &main_address->in_addr.in);
@@ -219,14 +219,14 @@ int dhcp4_server_configure(Link *link) {
                 r = sd_dhcp_server_set_max_lease_time(link->dhcp_server,
                                                       DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC));
                 if (r < 0)
-                        return r;
+                        return log_link_error_errno(link, r, "Failed to set maximum lease time for DHCPv4 server instance: %m");
         }
 
         if (link->network->dhcp_server_default_lease_time_usec > 0) {
                 r = sd_dhcp_server_set_default_lease_time(link->dhcp_server,
                                                           DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC));
                 if (r < 0)
-                        return r;
+                        return log_link_error_errno(link, r, "Failed to set default lease time for DHCPv4 server instance: %m");
         }
 
         if (link->network->dhcp_server_emit_dns) {
@@ -302,7 +302,7 @@ int dhcp4_server_configure(Link *link) {
 
                 r = sd_dhcp_server_set_timezone(link->dhcp_server, tz);
                 if (r < 0)
-                        return r;
+                        return log_link_error_errno(link, r, "Failed to set timezone for DHCP server: %m");
         }
 
         ORDERED_HASHMAP_FOREACH(p, link->network->dhcp_server_raw_options, i) {
@@ -310,7 +310,7 @@ int dhcp4_server_configure(Link *link) {
                 if (r == -EEXIST)
                         continue;
                 if (r < 0)
-                        return r;
+                        return log_link_error_errno(link, r, "Failed to set DHCPv4 option: %m");
         }
 
         if (!sd_dhcp_server_is_running(link->dhcp_server)) {

src/portable/portablectl.c

@@ -781,9 +781,9 @@ static int help(int argc, char *argv[], void *userdata) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Attach or detach portable services from the local system.%s\n"
-               "Commands:\n"
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sAttach or detach portable services from the local system.%s\n"
+               "\nCommands:\n"
                "  list                        List available portable service images\n"
                "  attach NAME|PATH [PREFIX...]\n"
                "                              Attach the specified portable service image\n"
@@ -794,7 +794,7 @@ static int help(int argc, char *argv[], void *userdata) {
                "  read-only NAME|PATH [BOOL]  Mark or unmark portable service image read-only\n"
                "  remove NAME|PATH...         Remove a portable service image\n"
                "  set-limit [NAME|PATH]       Set image or pool size limit (disk quota)\n"
-               "\nOptions\n"
+               "\nOptions:\n"
                "  -h --help                   Show this help\n"
                "     --version                Show package version\n"
                "     --no-pager               Do not pipe output into a pager\n"
@@ -810,8 +810,8 @@ static int help(int argc, char *argv[], void *userdata) {
                "     --cat                    When inspecting include unit and os-release file\n"
                "                              contents\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/resolve/resolvectl.c

@@ -2473,7 +2473,7 @@ static int compat_help(void) {
                "%1$s [OPTIONS...] --statistics\n"
                "%1$s [OPTIONS...] --reset-statistics\n"
                "\n"
-               "Resolve domain names, IPv4 and IPv6 addresses, DNS records, and services.\n\n"
+               "%2$sResolve domain names, IPv4 and IPv6 addresses, DNS records, and services.%3$s\n\n"
                "  -h --help                 Show this help\n"
                "     --version              Show package version\n"
                "     --no-pager             Do not pipe output into a pager\n"
@@ -2507,8 +2507,10 @@ static int compat_help(void) {
                "     --set-dnssec=MODE      Set per-interface DNSSEC mode\n"
                "     --set-nta=DOMAIN       Set per-interface DNSSEC NTA\n"
                "     --revert               Revert per-interface configuration\n"
-               "\nSee the %2$s for details.\n"
+               "\nSee the %4$s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
                , link
         );
 
@@ -2523,10 +2525,10 @@ static int native_help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] {COMMAND} ...\n"
+        printf("%s [OPTIONS...] COMMAND ...\n"
                "\n"
-               "Send control commands to the network name resolution manager, or\n"
-               "resolve domain names, IPv4 and IPv6 addresses, DNS records, and services.%s\n"
+               "%sSend control commands to the network name resolution manager, or%s\n"
+               "%sresolve domain names, IPv4 and IPv6 addresses, DNS records, and services.%s\n"
                "\nCommands:\n"
                "  query HOSTNAME|ADDRESS...    Resolve domain names, IPv4 and IPv6 addresses\n"
                "  service [[NAME] TYPE] DOMAIN Resolve service (SRV)\n"
@@ -2546,7 +2548,7 @@ static int native_help(void) {
                "  dnssec [LINK [MODE]]         Get/set per-interface DNSSEC mode\n"
                "  nta [LINK [DOMAIN...]]       Get/set per-interface DNSSEC NTA\n"
                "  revert LINK                  Revert per-interface configuration\n"
-               "\nOptions\n"
+               "\nOptions:\n"
                "  -h --help                    Show this help\n"
                "     --version                 Show package version\n"
                "     --no-pager                Do not pipe output into a pager\n"
@@ -2564,8 +2566,10 @@ static int native_help(void) {
                "     --raw[=payload|packet]    Dump the answer as binary data\n"
                "     --legend=BOOL             Print headers and additional info (default: yes)\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
+               , ansi_normal()
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/run/run.c

@@ -84,8 +84,8 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...] {COMMAND} [ARGS...]\n\n"
-               "Run the specified command in a transient scope or service.\n\n"
+        printf("%s [OPTIONS...] COMMAND [ARGUMENTS...]\n"
+               "\n%sRun the specified command in a transient scope or service.%s\n\n"
                "  -h --help                       Show this help\n"
                "     --version                    Show package version\n"
                "     --no-ask-password            Do not prompt for password\n"
@@ -130,6 +130,7 @@ static int help(void) {
                "     --timer-property=NAME=VALUE  Set timer unit property\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 

src/shared/id128-print.c

@@ -10,15 +10,22 @@
 #include "pretty-print.h"
 #include "terminal-util.h"
 
-int id128_pretty_print(sd_id128_t id, bool pretty) {
-        unsigned i;
+int id128_pretty_print(sd_id128_t id, Id128PrettyPrintMode mode) {
         _cleanup_free_ char *man_link = NULL, *mod_link = NULL;
         const char *on, *off;
+        unsigned i;
 
-        if (!pretty) {
+        assert(mode >= 0);
+        assert(mode < _ID128_PRETTY_PRINT_MODE_MAX);
+
+        if (mode == ID128_PRINT_ID128) {
                 printf(SD_ID128_FORMAT_STR "\n",
                        SD_ID128_FORMAT_VAL(id));
                 return 0;
+        } else if (mode == ID128_PRINT_UUID) {
+                printf(SD_ID128_UUID_FORMAT_STR "\n",
+                       SD_ID128_FORMAT_VAL(id));
+                return 0;
         }
 
         on = ansi_highlight();
@@ -35,7 +42,7 @@ int id128_pretty_print(sd_id128_t id, bool pretty) {
                "As UUID:\n"
                "%s" SD_ID128_UUID_FORMAT_STR "%s\n\n"
                "As %s macro:\n"
-               "%s#define MESSAGE_XYZ SD_ID128_MAKE(",
+               "%s#define XYZ SD_ID128_MAKE(",
                on, SD_ID128_FORMAT_VAL(id), off,
                on, SD_ID128_FORMAT_VAL(id), off,
                man_link,
@@ -46,14 +53,14 @@ int id128_pretty_print(sd_id128_t id, bool pretty) {
 
         printf("As Python constant:\n"
                ">>> import %s\n"
-               ">>> %sMESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')%s\n",
+               ">>> %sXYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')%s\n",
                mod_link,
                on, SD_ID128_FORMAT_VAL(id), off);
 
         return 0;
 }
 
-int id128_print_new(bool pretty) {
+int id128_print_new(Id128PrettyPrintMode mode) {
         sd_id128_t id;
         int r;
 
@@ -61,5 +68,5 @@ int id128_print_new(bool pretty) {
         if (r < 0)
                 return log_error_errno(r, "Failed to generate ID: %m");
 
-        return id128_pretty_print(id, pretty);
+        return id128_pretty_print(id, mode);
 }

src/shared/id128-print.h

@@ -6,5 +6,13 @@
 
 #include "sd-id128.h"
 
-int id128_pretty_print(sd_id128_t id, bool pretty);
-int id128_print_new(bool pretty);
+typedef enum Id128PrettyPrintMode {
+        ID128_PRINT_ID128,
+        ID128_PRINT_UUID,
+        ID128_PRINT_PRETTY,
+        _ID128_PRETTY_PRINT_MODE_MAX,
+        _ID128_PRETTY_PRINT_MODE_INVALID = -1
+} Id128PrettyPrintMode;
+
+int id128_pretty_print(sd_id128_t id, Id128PrettyPrintMode mode);
+int id128_print_new(Id128PrettyPrintMode mode);

src/systemctl/systemctl.c

@@ -7694,9 +7694,9 @@ static int systemctl_help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%5$s%1$s [OPTIONS...] {COMMAND} ...\n\n"
-               "Query or send control commands to the systemd manager.%6$s\n\n"
-               "%3$sUnit Commands:%4$s\n"
+        printf("%1$s [OPTIONS...] COMMAND ...\n\n"
+               "%5$sQuery or send control commands to the system manager.%6$s\n"
+               "\n%3$sUnit Commands:%4$s\n"
                "  list-units [PATTERN...]             List units currently in memory\n"
                "  list-sockets [PATTERN...]           List socket units currently in memory,\n"
                "                                      ordered by address\n"
@@ -7727,8 +7727,8 @@ static int systemctl_help(void) {
                "                                      units\n"
                "  list-dependencies [UNIT]            Recursively show units which are required\n"
                "                                      or wanted by this unit or by which this\n"
-               "                                      unit is required or wanted\n\n"
-               "%3$sUnit File Commands:%4$s\n"
+               "                                      unit is required or wanted\n"
+               "\n%3$sUnit File Commands:%4$s\n"
                "  list-unit-files [PATTERN...]        List installed unit files\n"
                "  enable [UNIT...|PATH...]            Enable one or more unit files\n"
                "  disable UNIT...                     Disable one or more unit files\n"
@@ -7750,21 +7750,21 @@ static int systemctl_help(void) {
                "                                      on specified one or more units\n"
                "  edit UNIT...                        Edit one or more unit files\n"
                "  get-default                         Get the name of the default target\n"
-               "  set-default TARGET                  Set the default target\n\n"
-               "%3$sMachine Commands:%4$s\n"
+               "  set-default TARGET                  Set the default target\n"
+               "\n%3$sMachine Commands:%4$s\n"
                "  list-machines [PATTERN...]          List local containers and host\n\n"
-               "%3$sJob Commands:%4$s\n"
+               "\n%3$sJob Commands:%4$s\n"
                "  list-jobs [PATTERN...]              List jobs\n"
-               "  cancel [JOB...]                     Cancel all, one, or more jobs\n\n"
-               "%3$sEnvironment Commands:%4$s\n"
+               "  cancel [JOB...]                     Cancel all, one, or more jobs\n"
+               "\n%3$sEnvironment Commands:%4$s\n"
                "  show-environment                    Dump environment\n"
                "  set-environment VARIABLE=VALUE...   Set one or more environment variables\n"
                "  unset-environment VARIABLE...       Unset one or more environment variables\n"
                "  import-environment [VARIABLE...]    Import all or some environment variables\n\n"
-               "%3$sManager Lifecycle Commands:%4$s\n"
+               "\n%3$sManager Lifecycle Commands:%4$s\n"
                "  daemon-reload                       Reload systemd manager configuration\n"
-               "  daemon-reexec                       Reexecute systemd manager\n\n"
-               "%3$sSystem Commands:%4$s\n"
+               "  daemon-reexec                       Reexecute systemd manager\n"
+               "\n%3$sSystem Commands:%4$s\n"
                "  is-system-running                   Check whether system is fully running\n"
                "  default                             Enter system default mode\n"
                "  rescue                              Enter system rescue mode\n"
@@ -7780,7 +7780,7 @@ static int systemctl_help(void) {
                "  hybrid-sleep                        Hibernate and suspend the system\n"
                "  suspend-then-hibernate              Suspend the system, wake after a period of\n"
                "                                      time and put it into hibernate\n"
-               "\nOptions\n"
+               "\n%3$sOptions:%4$s\n"
                "  -h --help           Show this help\n"
                "     --version        Show package version\n"
                "     --system         Connect to system manager\n"
@@ -7859,8 +7859,9 @@ static int halt_help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...]%s\n\n"
-               "%s the system.\n\n"
+        printf("%s [OPTIONS...]%s\n"
+               "\n%s%s the system.%s\n"
+               "\nOptions:\n"
                "     --help      Show this help\n"
                "     --halt      Halt the machine\n"
                "  -p --poweroff  Switch off the machine\n"
@@ -7871,10 +7872,12 @@ static int halt_help(void) {
                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
-               , arg_action == ACTION_REBOOT   ? " [ARG]" : "",
-                 arg_action == ACTION_REBOOT   ? "Reboot" :
+               , arg_action == ACTION_REBOOT   ? " [ARG]" : ""
+               , ansi_highlight()
+               , arg_action == ACTION_REBOOT   ? "Reboot" :
                  arg_action == ACTION_POWEROFF ? "Power off" :
                                                  "Halt"
+               , ansi_normal()
                , link
         );
 
@@ -7889,8 +7892,9 @@ static int shutdown_help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
-               "Shut down the system.\n\n"
+        printf("%s [OPTIONS...] [TIME] [WALL...]\n"
+               "\n%sShut down the system.%s\n"
+               "\nOptions:\n"
                "     --help      Show this help\n"
                "  -H --halt      Halt the machine\n"
                "  -P --poweroff  Power-off the machine\n"
@@ -7901,6 +7905,7 @@ static int shutdown_help(void) {
                "  -c             Cancel a pending shutdown\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 
@@ -7915,19 +7920,21 @@ static int telinit_help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...] {COMMAND}\n\n"
-               "Send control commands to the init daemon.\n\n"
-               "     --help      Show this help\n"
-               "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
-               "Commands:\n"
+        printf("%s [OPTIONS...] COMMAND\n\n"
+               "%sSend control commands to the init daemon.%s\n"
+               "\nCommands:\n"
                "  0              Power-off the machine\n"
                "  6              Reboot the machine\n"
                "  2, 3, 4, 5     Start runlevelX.target unit\n"
                "  1, s, S        Enter rescue mode\n"
                "  q, Q           Reload init daemon configuration\n"
                "  u, U           Reexecute init daemon\n"
+               "\nOptions:\n"
+               "     --help      Show this help\n"
+               "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 
@@ -7942,11 +7949,13 @@ static int runlevel_help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s [OPTIONS...]\n\n"
-               "Prints the previous and current runlevel of the init system.\n\n"
+        printf("%s [OPTIONS...]\n"
+               "\n%sPrints the previous and current runlevel of the init system.%s\n"
+               "\nOptions:\n"
                "     --help      Show this help\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
+               , ansi_highlight(), ansi_normal()
                , link
         );
 
@@ -8525,7 +8534,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         /* Output an error mimicking getopt, and print a hint afterwards */
                         log_error("%s: invalid option -- '.'", program_invocation_name);
                         log_notice("Hint: to specify units starting with a dash, use \"--\":\n"
-                                   "      %s [OPTIONS...] {COMMAND} -- -.%s ...",
+                                   "      %s [OPTIONS...] COMMAND -- -.%s ...",
                                    program_invocation_name, optarg ?: "mount");
                         _fallthrough_;
 

src/timedate/timedatectl.c

@@ -810,8 +810,8 @@ static int help(void) {
         if (r < 0)
                 return log_oom();
 
-        printf("%s%s [OPTIONS...] COMMAND ...\n\n"
-               "Query or change system time and date settings.%s\n"
+        printf("%s [OPTIONS...] COMMAND ...\n"
+               "\n%sQuery or change system time and date settings.%s\n"
                "\nCommands:\n"
                "  status                   Show current time settings\n"
                "  show                     Show properties of systemd-timedated\n"
@@ -820,11 +820,10 @@ static int help(void) {
                "  list-timezones           Show known time zones\n"
                "  set-local-rtc BOOL       Control whether RTC is in local time\n"
                "  set-ntp BOOL             Enable or disable network time synchronization\n"
-               "\n"
-               "systemd-timesyncd Commands:\n"
+               "\nsystemd-timesyncd Commands:\n"
                "  timesync-status          Show status of systemd-timesyncd\n"
                "  show-timesync            Show properties of systemd-timesyncd\n"
-               "\nOptions\n"
+               "\nOptions:\n"
                "  -h --help                Show this help message\n"
                "     --version             Show package version\n"
                "     --no-pager            Do not pipe output into a pager\n"
@@ -837,8 +836,8 @@ static int help(void) {
                "  -a --all                 Show all properties, including empty ones\n"
                "     --value               When showing properties, only print the value\n"
                "\nSee the %s for details.\n"
-               , ansi_highlight()
                , program_invocation_short_name
+               , ansi_highlight()
                , ansi_normal()
                , link
         );

src/udev/udev-rules.c

@@ -751,10 +751,7 @@ static int parse_token(UdevRules *rules, const char *key, char *attr, UdevRuleOp
                 if (op == OP_REMOVE)
                         return log_token_invalid_op(rules, key);
                 if (!is_match) {
-                        if (op == OP_ASSIGN)
-                                log_token_debug(rules, "Operator '=' is specified to %s key, assuming '=='.", key);
-                        else
-                                log_token_warning(rules, "%s key takes '==' or '!=' operator, assuming '==', but please fix it.", key);
+                        log_token_debug(rules, "%s key takes '==' or '!=' operator, assuming '=='.", key);
                         op = OP_MATCH;
                 }
 
@@ -766,10 +763,7 @@ static int parse_token(UdevRules *rules, const char *key, char *attr, UdevRuleOp
                 if (op == OP_REMOVE)
                         return log_token_invalid_op(rules, key);
                 if (!is_match) {
-                        if (op == OP_ASSIGN)
-                                log_token_debug(rules, "Operator '=' is specified to %s key, assuming '=='.", key);
-                        else
-                                log_token_warning(rules, "%s key takes '==' or '!=' operator, assuming '==', but please fix it.", key);
+                        log_token_debug(rules, "%s key takes '==' or '!=' operator, assuming '=='.", key);
                         op = OP_MATCH;
                 }
 

src/udev/udevadm-trigger.c

@@ -45,10 +45,13 @@ static int exec_list(sd_device_enumerator *e, const char *action, Set *settle_se
 
                 r = write_string_file(filename, action, WRITE_STRING_FILE_DISABLE_BUFFER);
                 if (r < 0) {
-                        bool ignore = IN_SET(r, -ENOENT, -EACCES, -ENODEV);
+                        bool ignore = IN_SET(r, -ENOENT, -EACCES, -ENODEV, -EROFS);
 
                         log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, r,
-                                       "Failed to write '%s' to '%s': %m", action, filename);
+                                       "Failed to write '%s' to '%s'%s: %m",
+                                       action, filename, ignore ? ", ignoring" : "");
+                        if (r == -EROFS)
+                                return 0; /* Read only filesystem. Return earlier. */
                         if (ret == 0 && !ignore)
                                 ret = r;
                         continue;