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firstboot: get rid of firstboot generator again, introduce ConditionFirstBoot= instead

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As Zbigniew pointed out a new ConditionFirstBoot= appears like the nicer
way to hook in systemd-firstboot.service on first boots (those with /etc
unpopulated), so let's do this, and get rid of the generator again.
This commit is contained in:
Lennart Poettering 2014-07-07 19:25:31 +02:00
parent 45035609fc
commit e26807239b
17 changed files with 64 additions and 108 deletions
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1
.gitignore vendored
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@ -65,7 +65,6 @@
/systemd-detect-virt
/systemd-efi-boot-generator
/systemd-firstboot
/systemd-firstboot-generator
/systemd-fsck
/systemd-fstab-generator
/systemd-getty-generator

6
Makefile-man.am
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@ -63,7 +63,7 @@ MANPAGES += \
man/systemd-delta.1 \
man/systemd-detect-virt.1 \
man/systemd-efi-boot-generator.8 \
man/systemd-firstboot.8 \
man/systemd-firstboot.1 \
man/systemd-fsck@.service.8 \
man/systemd-fstab-generator.8 \
man/systemd-getty-generator.8 \
@ -194,7 +194,7 @@ MANPAGES_ALIAS += \
man/systemd-ask-password-console.path.8 \
man/systemd-ask-password-wall.path.8 \
man/systemd-ask-password-wall.service.8 \
man/systemd-firstboot.service.8 \
man/systemd-firstboot.service.1 \
man/systemd-fsck-root.service.8 \
man/systemd-fsck.8 \
man/systemd-hibernate.service.8 \
@ -300,7 +300,7 @@ man/sd_notifyf.3: man/sd_notify.3
man/systemd-ask-password-console.path.8: man/systemd-ask-password-console.service.8
man/systemd-ask-password-wall.path.8: man/systemd-ask-password-console.service.8
man/systemd-ask-password-wall.service.8: man/systemd-ask-password-console.service.8
man/systemd-firstboot.service.8: man/systemd-firstboot.8
man/systemd-firstboot.service.1: man/systemd-firstboot.1
man/systemd-fsck-root.service.8: man/systemd-fsck@.service.8
man/systemd-fsck.8: man/systemd-fsck@.service.8
man/systemd-hibernate.service.8: man/systemd-suspend.service.8

11
Makefile.am
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@ -1894,15 +1894,8 @@ nodist_systemunit_DATA += \
EXTRA_DIST += \
units/systemd-firstboot.service.in
systemgenerator_PROGRAMS += \
systemd-firstboot-generator
systemd_firstboot_generator_SOURCES = \
src/firstboot/firstboot-generator.c
systemd_firstboot_generator_LDADD = \
libsystemd-label.la \
libsystemd-shared.la
SYSINIT_TARGET_WANTS += \
systemd-firstboot.service
endif

13
man/systemd.unit.xml
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@ -901,6 +901,7 @@
<term><varname>ConditionCapability=</varname></term>
<term><varname>ConditionACPower=</varname></term>
<term><varname>ConditionNeedsUpdate=</varname></term>
<term><varname>ConditionFirstBoot=</varname></term>
<term><varname>ConditionPathExists=</varname></term>
<term><varname>ConditionPathExistsGlob=</varname></term>
<term><varname>ConditionPathIsDirectory=</varname></term>
@ -1101,6 +1102,18 @@
files's modification time gets reset
indicating a completed update.</para>
<para><varname>ConditionFirstBoot=</varname>
takes a boolean argument. This
condition may be used to
conditionalize units on whether the
system is booting up with an
unpopulated <filename>/etc</filename>
directory. This may be used to
populate <filename>/etc</filename> on
the first boot after factory reset, or
when a new system instances boots up
for the first time.</para>
<para>With
<varname>ConditionPathExists=</varname>
a file existence condition is

17
src/core/condition.c
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@ -120,6 +120,20 @@ static bool condition_test_needs_update(Condition *c) {
(usr.st_mtim.tv_sec == other.st_mtim.tv_sec && usr.st_mtim.tv_nsec > other.st_mtim.tv_nsec)) == !c->negate;
}
static bool condition_test_first_boot(Condition *c) {
int r;
assert(c);
assert(c->parameter);
assert(c->type == CONDITION_FIRST_BOOT);
r = parse_boolean(c->parameter);
if (r < 0)
return c->negate;
return ((access("/run/systemd/first-boot", F_OK) >= 0) == !!r) == !c->negate;
}
static bool condition_test(Condition *c) {
assert(c);
@ -202,6 +216,9 @@ static bool condition_test(Condition *c) {
case CONDITION_NEEDS_UPDATE:
return condition_test_needs_update(c);
case CONDITION_FIRST_BOOT:
return condition_test_first_boot(c);
case CONDITION_NULL:
return !c->negate;

1
src/core/load-fragment-gperf.gperf.m4
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@ -162,6 +162,7 @@ Unit.ConditionDirectoryNotEmpty, config_parse_unit_condition_path, CONDITION_D
Unit.ConditionFileNotEmpty, config_parse_unit_condition_path, CONDITION_FILE_NOT_EMPTY, 0
Unit.ConditionFileIsExecutable, config_parse_unit_condition_path, CONDITION_FILE_IS_EXECUTABLE, 0
Unit.ConditionNeedsUpdate, config_parse_unit_condition_path, CONDITION_NEEDS_UPDATE, 0
Unit.ConditionFirstBoot, config_parse_unit_condition_path, CONDITION_FIRST_BOOT, 0
Unit.ConditionKernelCommandLine, config_parse_unit_condition_string, CONDITION_KERNEL_COMMAND_LINE, 0
Unit.ConditionArchitecture, config_parse_unit_condition_string, CONDITION_ARCHITECTURE, 0
Unit.ConditionVirtualization, config_parse_unit_condition_string, CONDITION_VIRTUALIZATION, 0

2
src/core/main.c
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@ -1648,11 +1648,11 @@ int main(int argc, char *argv[]) {
m->initrd_timestamp = initrd_timestamp;
m->security_start_timestamp = security_start_timestamp;
m->security_finish_timestamp = security_finish_timestamp;
m->is_first_boot = empty_etc;
manager_set_default_rlimits(m, arg_default_rlimit);
manager_environment_add(m, NULL, arg_default_environment);
manager_set_show_status(m, arg_show_status);
manager_set_first_boot(m, empty_etc);
/* Remember whether we should queue the default job */
queue_default_job = !arg_serialization || arg_switched_root;

25
src/core/manager.c
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@ -2477,7 +2477,7 @@ void manager_check_finished(Manager *m) {
m->confirm_spawn = false;
/* This is no longer the first boot */
m->is_first_boot = false;
manager_set_first_boot(m, false);
if (dual_timestamp_is_set(&m->finish_timestamp))
return;
@ -2631,7 +2631,6 @@ void manager_run_generators(Manager *m) {
_cleanup_closedir_ DIR *d = NULL;
const char *generator_path;
const char *argv[5];
const char *env[2];
int r;
assert(m);
@ -2665,14 +2664,8 @@ void manager_run_generators(Manager *m) {
argv[3] = m->generator_unit_path_late;
argv[4] = NULL;
if (m->is_first_boot) {
env[0] = (char*) "SYSTEMD_FIRST_BOOT=1";
env[1] = NULL;
} else
env[0] = NULL;
RUN_WITH_UMASK(0022)
execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv, (char**) env);
execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
finish:
trim_generator_dir(m, &m->generator_unit_path);
@ -2816,6 +2809,20 @@ static bool manager_get_show_status(Manager *m) {
return plymouth_running();
}
void manager_set_first_boot(Manager *m, bool b) {
assert(m);
if (m->running_as != SYSTEMD_SYSTEM)
return;
m->first_boot = b;
if (m->first_boot)
touch("/run/systemd/first-boot");
else
unlink("/run/systemd/first-boot");
}
void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
va_list ap;

4
src/core/manager.h
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@ -228,6 +228,7 @@ struct Manager {
bool dispatching_dbus_queue:1;
bool taint_usr:1;
bool first_boot:1;
ShowStatus show_status;
bool confirm_spawn;
@ -243,7 +244,6 @@ struct Manager {
bool default_cpu_accounting;
bool default_memory_accounting;
bool default_blockio_accounting;
bool is_first_boot;
usec_t default_timer_accuracy_usec;
@ -334,6 +334,8 @@ void manager_undo_generators(Manager *m);
void manager_recheck_journal(Manager *m);
void manager_set_show_status(Manager *m, ShowStatus mode);
void manager_set_first_boot(Manager *m, bool b);
void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) _printf_(4,5);
void manager_flip_auto_status(Manager *m, bool enable);

2
src/core/shutdown.c
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@ -375,7 +375,7 @@ int main(int argc, char *argv[]) {
arguments[0] = NULL;
arguments[1] = arg_verb;
arguments[2] = NULL;
execute_directory(SYSTEM_SHUTDOWN_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments, NULL);
execute_directory(SYSTEM_SHUTDOWN_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
if (!in_container && !in_initrd() &&
access("/run/initramfs/shutdown", X_OK) == 0) {

71
src/firstboot/firstboot-generator.c
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@ -1,71 +0,0 @@
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 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 "util.h"
#include "mkdir.h"
static const char *arg_dest = "/tmp";
static bool is_first_boot(void) {
const char *e;
e = getenv("SYSTEMD_FIRST_BOOT");
if (!e)
return false;
return parse_boolean(e) > 0;
}
int main(int argc, char *argv[]) {
int r;
if (argc > 1 && argc != 4) {
log_error("This program takes three or no arguments.");
return EXIT_FAILURE;
}
if (argc > 1)
arg_dest = argv[2];
log_set_target(LOG_TARGET_SAFE);
log_parse_environment();
log_open();
umask(0022);
if (is_first_boot()) {
const char *t;
t = strappenda(arg_dest, "/default.target.wants/systemd-firstboot.service");
mkdir_parents(t, 0755);
if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-firstboot.service", t) < 0 && errno != EEXIST) {
log_error("Failed to create firstboot service symlinks %s: %m", t);
r = -errno;
goto finish;
}
}
r = 0;
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}

1
src/shared/condition-util.c
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@ -257,6 +257,7 @@ static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
[CONDITION_AC_POWER] = "ConditionACPower",
[CONDITION_ARCHITECTURE] = "ConditionArchitecture",
[CONDITION_NEEDS_UPDATE] = "ConditionNeedsUpdate",
[CONDITION_FIRST_BOOT] = "ConditionFirstBoot",
[CONDITION_NULL] = "ConditionNull"
};

1
src/shared/condition-util.h
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@ -45,6 +45,7 @@ typedef enum ConditionType {
CONDITION_AC_POWER,
CONDITION_ARCHITECTURE,
CONDITION_NEEDS_UPDATE,
CONDITION_FIRST_BOOT,
CONDITION_NULL,
_CONDITION_TYPE_MAX,
_CONDITION_TYPE_INVALID = -1

10
src/shared/util.c
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@ -3795,7 +3795,7 @@ bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) {
return endswith(de->d_name, suffix);
}
void execute_directory(const char *directory, DIR *d, usec_t timeout, char *argv[], char *env[]) {
void execute_directory(const char *directory, DIR *d, usec_t timeout, char *argv[]) {
pid_t executor_pid;
int r;
@ -3826,14 +3826,6 @@ void execute_directory(const char *directory, DIR *d, usec_t timeout, char *argv
assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
if (!strv_isempty(env)) {
char **i;
STRV_FOREACH(i, env)
putenv(*i);
}
if (!d) {
d = _d = opendir(directory);
if (!d) {

2
src/shared/util.h
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@ -505,7 +505,7 @@ bool tty_is_console(const char *tty) _pure_;
int vtnr_from_tty(const char *tty);
const char *default_term_for_tty(const char *tty);
void execute_directory(const char *directory, DIR *_d, usec_t timeout, char *argv[], char *env[]);
void execute_directory(const char *directory, DIR *_d, usec_t timeout, char *argv[]);
int kill_and_sigcont(pid_t pid, int sig);

4
src/sleep/sleep.c
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@ -110,7 +110,7 @@ static int execute(char **modes, char **states) {
arguments[1] = (char*) "pre";
arguments[2] = arg_verb;
arguments[3] = NULL;
execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments, NULL);
execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
log_struct(LOG_INFO,
MESSAGE_ID(SD_MESSAGE_SLEEP_START),
@ -129,7 +129,7 @@ static int execute(char **modes, char **states) {
NULL);
arguments[1] = (char*) "post";
execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments, NULL);
execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
return r;
}

1
units/systemd-firstboot.service.in
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@ -13,6 +13,7 @@ Conflicts=shutdown.target
After=systemd-readahead-collect.service systemd-readahead-replay.service systemd-remount-fs.service systemd-sysusers.service
Before=sysinit.target shutdown.target
ConditionPathIsReadWrite=/etc
ConditionFirstBoot=yes
[Service]
Type=oneshot