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base/SOURCES/0185-systemctl-introduce-no...

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From 65d36d59c936650e141fcbf38b287627fd0ba21a Mon Sep 17 00:00:00 2001
From: Jan Synacek <jsynacek@redhat.com>
Date: Fri, 15 May 2015 09:54:10 +0200
Subject: [PATCH] systemctl: introduce --now for enable, disable and mask
https://bugs.freedesktop.org/show_bug.cgi?id=42940
Conflicts:
src/libsystemd/sd-bus/bus-util.c
src/libsystemd/sd-bus/bus-util.h
src/systemctl/systemctl.c
Cherry-picked from: 57ab2eabb8f92fad5239c7d4492e9c6e23ee0678
Resolves: #1233081
---
Makefile.am | 1 +
man/systemctl.xml | 33 ++++++++----
src/libsystemd/sd-bus/bus-util.c | 6 ++-
src/libsystemd/sd-bus/bus-util.h | 3 +-
src/machine/machinectl.c | 2 +-
src/shared/install.c | 112 +++++++++++++++++++--------------------
src/shared/install.h | 1 +
src/systemctl/systemctl.c | 28 ++++++++--
8 files changed, 114 insertions(+), 72 deletions(-)
diff --git a/Makefile.am b/Makefile.am
index 604eaf2f1..d3fb398fe 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5253,6 +5253,7 @@ machinectl_LDADD = \
libsystemd-internal.la \
libsystemd-logs.la \
libsystemd-journal-internal.la \
+ libsystemd-units.la \
libsystemd-shared.la
rootbin_PROGRAMS += \
diff --git a/man/systemctl.xml b/man/systemctl.xml
index 3c4c9cb92..44ec0d7bc 100644
--- a/man/systemctl.xml
+++ b/man/systemctl.xml
@@ -455,6 +455,18 @@
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>--now</option></term>
+
+ <listitem>
+ <para>When used with <command>enable</command>, the units
+ will also be started. When used with <command>disable</command> or
+ <command>mask</command>, the units will also be stopped. The start
+ or stop operation is only carried out when the respective enable or
+ disable operation has been successful.</para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>--root=</option></term>
@@ -909,11 +921,12 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
the changes are taken into account immediately. Note that
this does <emphasis>not</emphasis> have the effect of also
starting any of the units being enabled. If this
- is desired, a separate <command>start</command> command must
- be invoked for the unit. Also note that in case of instance
- enablement, symlinks named the same as instances are created in
- the install location, however they all point to the same
- template unit file.</para>
+ is desired, either <option>--now</option> should be used
+ together with this command, or an additional <command>start</command>
+ command must be invoked for the unit. Also note that in case of
+ instance enablement, symlinks named the same as instances
+ are created in the install location, however they all point to the
+ same template unit file.</para>
<para>This command will print the actions executed. This
output may be suppressed by passing <option>--quiet</option>.
@@ -968,9 +981,10 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
<command>enable</command>. This call implicitly reloads the
systemd daemon configuration after completing the disabling
of the units. Note that this command does not implicitly
- stop the units that are being disabled. If this is desired,
- an additional <command>stop</command> command should be
- executed afterwards.</para>
+ stop the units that are being disabled. If this is desired, either
+ <option>--now</option> should be used together with this command, or
+ an additional <command>stop</command> command should be executed
+ afterwards.</para>
<para>This command will print the actions executed. This
output may be suppressed by passing <option>--quiet</option>.
@@ -1116,7 +1130,8 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
activation of the unit, including enablement and manual
activation. Use this option with care. This honors the
<option>--runtime</option> option to only mask temporarily
- until the next reboot of the system.</para>
+ until the next reboot of the system. The <option>--now</option>
+ option can be used to ensure that the units are also stopped.</para>
</listitem>
</varlistentry>
diff --git a/src/libsystemd/sd-bus/bus-util.c b/src/libsystemd/sd-bus/bus-util.c
index 2e6d88962..fff00d9f9 100644
--- a/src/libsystemd/sd-bus/bus-util.c
+++ b/src/libsystemd/sd-bus/bus-util.c
@@ -1849,7 +1849,7 @@ int bus_wait_for_jobs_add(BusWaitForJobs *d, const char *path) {
return set_put_strdup(d->jobs, path);
}
-int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet) {
+int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet, UnitFileChange **changes, unsigned *n_changes) {
const char *type, *path, *source;
int r;
@@ -1864,6 +1864,10 @@ int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet) {
else
log_info("Removed symlink %s.", path);
}
+
+ r = unit_file_changes_add(changes, n_changes, streq(type, "symlink") ? UNIT_FILE_SYMLINK : UNIT_FILE_UNLINK, path, source);
+ if (r < 0)
+ return r;
}
if (r < 0)
return bus_log_parse_error(r);
diff --git a/src/libsystemd/sd-bus/bus-util.h b/src/libsystemd/sd-bus/bus-util.h
index e8a97cef9..21db98228 100644
--- a/src/libsystemd/sd-bus/bus-util.h
+++ b/src/libsystemd/sd-bus/bus-util.h
@@ -24,6 +24,7 @@
#include "sd-event.h"
#include "sd-bus.h"
#include "hashmap.h"
+#include "install.h"
#include "time-util.h"
#include "util.h"
@@ -211,4 +212,4 @@ int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet);
DEFINE_TRIVIAL_CLEANUP_FUNC(BusWaitForJobs*, bus_wait_for_jobs_free);
-int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet);
+int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet, UnitFileChange **changes, unsigned *n_changes);
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index 9f8c68b18..f1910709d 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -1709,7 +1709,7 @@ static int enable_machine(int argc, char *argv[], void *userdata) {
return bus_log_parse_error(r);
}
- r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet);
+ r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL);
if (r < 0)
return r;
diff --git a/src/shared/install.c b/src/shared/install.c
index efd489ec0..b62065be5 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -113,51 +113,6 @@ static int get_config_path(UnitFileScope scope, bool runtime, const char *root_d
return 0;
}
-static int add_file_change(
- UnitFileChange **changes,
- unsigned *n_changes,
- UnitFileChangeType type,
- const char *path,
- const char *source) {
-
- UnitFileChange *c;
- unsigned i;
-
- assert(path);
- assert(!changes == !n_changes);
-
- if (!changes)
- return 0;
-
- c = realloc(*changes, (*n_changes + 1) * sizeof(UnitFileChange));
- if (!c)
- return -ENOMEM;
-
- *changes = c;
- i = *n_changes;
-
- c[i].type = type;
- c[i].path = strdup(path);
- if (!c[i].path)
- return -ENOMEM;
-
- path_kill_slashes(c[i].path);
-
- if (source) {
- c[i].source = strdup(source);
- if (!c[i].source) {
- free(c[i].path);
- return -ENOMEM;
- }
-
- path_kill_slashes(c[i].path);
- } else
- c[i].source = NULL;
-
- *n_changes = i+1;
- return 0;
-}
-
static int mark_symlink_for_removal(
Set **remove_symlinks_to,
const char *p) {
@@ -310,7 +265,7 @@ static int remove_marked_symlinks_fd(
path_kill_slashes(p);
rmdir_parents(p, config_path);
- add_file_change(changes, n_changes, UNIT_FILE_UNLINK, p, NULL);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL);
if (!set_get(remove_symlinks_to, p)) {
@@ -597,7 +552,7 @@ int unit_file_mask(
}
if (symlink("/dev/null", path) >= 0) {
- add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
continue;
}
@@ -608,8 +563,8 @@ int unit_file_mask(
if (force) {
if (symlink_atomic("/dev/null", path) >= 0) {
- add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
- add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
continue;
}
}
@@ -665,7 +620,7 @@ int unit_file_unmask(
q = -errno;
else {
q = mark_symlink_for_removal(&remove_symlinks_to, path);
- add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
}
}
@@ -747,7 +702,7 @@ int unit_file_link(
return -ENOMEM;
if (symlink(*i, path) >= 0) {
- add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
continue;
}
@@ -766,8 +721,8 @@ int unit_file_link(
if (force) {
if (symlink_atomic(*i, path) >= 0) {
- add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
- add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
continue;
}
}
@@ -794,6 +749,51 @@ void unit_file_list_free(Hashmap *h) {
hashmap_free(h);
}
+int unit_file_changes_add(
+ UnitFileChange **changes,
+ unsigned *n_changes,
+ UnitFileChangeType type,
+ const char *path,
+ const char *source) {
+
+ UnitFileChange *c;
+ unsigned i;
+
+ assert(path);
+ assert(!changes == !n_changes);
+
+ if (!changes)
+ return 0;
+
+ c = realloc(*changes, (*n_changes + 1) * sizeof(UnitFileChange));
+ if (!c)
+ return -ENOMEM;
+
+ *changes = c;
+ i = *n_changes;
+
+ c[i].type = type;
+ c[i].path = strdup(path);
+ if (!c[i].path)
+ return -ENOMEM;
+
+ path_kill_slashes(c[i].path);
+
+ if (source) {
+ c[i].source = strdup(source);
+ if (!c[i].source) {
+ free(c[i].path);
+ return -ENOMEM;
+ }
+
+ path_kill_slashes(c[i].path);
+ } else
+ c[i].source = NULL;
+
+ *n_changes = i+1;
+ return 0;
+}
+
void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes) {
unsigned i;
@@ -1199,7 +1199,7 @@ static int create_symlink(
mkdir_parents_label(new_path, 0755);
if (symlink(old_path, new_path) >= 0) {
- add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
return 0;
}
@@ -1220,8 +1220,8 @@ static int create_symlink(
if (r < 0)
return r;
- add_file_change(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL);
- add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
return 0;
}
diff --git a/src/shared/install.h b/src/shared/install.h
index 3ca39397e..d729e6ed1 100644
--- a/src/shared/install.h
+++ b/src/shared/install.h
@@ -112,6 +112,7 @@ UnitFileState unit_file_get_state(
int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h);
void unit_file_list_free(Hashmap *h);
+int unit_file_changes_add(UnitFileChange **changes, unsigned *n_changes, UnitFileChangeType type, const char *path, const char *source);
void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes);
int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name);
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 089c25f83..9898694d7 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -138,6 +138,7 @@ static char *arg_host = NULL;
static unsigned arg_lines = 10;
static OutputMode arg_output = OUTPUT_SHORT;
static bool arg_plain = false;
+static bool arg_now = false;
static bool original_stdout_is_tty;
@@ -1979,7 +1980,7 @@ static int set_default(sd_bus *bus, char **args) {
return r;
}
- r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet);
+ r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL);
if (r < 0)
return r;
@@ -5415,7 +5416,7 @@ static int enable_unit(sd_bus *bus, char **args) {
return bus_log_parse_error(r);
}
- r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet);
+ r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes);
if (r < 0)
return r;
@@ -5437,6 +5438,18 @@ static int enable_unit(sd_bus *bus, char **args) {
"3) A unit may be started when needed via activation (socket, path, timer,\n"
" D-Bus, udev, scripted systemctl call, ...).\n");
+ if (arg_now && n_changes > 0 && STR_IN_SET(args[0], "enable", "disable", "mask")) {
+ char *new_args[n_changes + 2];
+ unsigned i;
+
+ new_args[0] = streq(args[0], "enable") ? (char *)"start" : (char *)"stop";
+ for (i = 0; i < n_changes; i++)
+ new_args[i + 1] = basename(changes[i].path);
+ new_args[i + 1] = NULL;
+
+ r = start_unit(bus, new_args);
+ }
+
finish:
unit_file_changes_free(changes, n_changes);
@@ -5516,7 +5529,7 @@ static int add_dependency(sd_bus *bus, char **args) {
return r;
}
- r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet);
+ r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL);
if (r < 0)
return r;
@@ -5582,7 +5595,7 @@ static int preset_all(sd_bus *bus, char **args) {
return r;
}
- r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet);
+ r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL);
if (r < 0)
return r;
@@ -6058,6 +6071,7 @@ static void systemctl_help(void) {
" When shutting down or sleeping, ignore inhibitors\n"
" --kill-who=WHO Who to send signal to\n"
" -s --signal=SIGNAL Which signal to send\n"
+ " --now Start or stop unit in addition to enabling or disabling it\n"
" -q --quiet Suppress output\n"
" --no-block Do not wait until operation finished\n"
" --no-wall Don't send wall message before halt/power-off/reboot\n"
@@ -6255,6 +6269,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
ARG_STATE,
ARG_JOB_MODE,
ARG_PRESET_MODE,
+ ARG_NOW,
};
static const struct option options[] = {
@@ -6297,6 +6312,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
{ "state", required_argument, NULL, ARG_STATE },
{ "recursive", no_argument, NULL, 'r' },
{ "preset-mode", required_argument, NULL, ARG_PRESET_MODE },
+ { "now", no_argument, NULL, ARG_NOW },
{}
};
@@ -6573,6 +6589,10 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
break;
+ case ARG_NOW:
+ arg_now = true;
+ break;
+
case '?':
return -EINVAL;