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https://github.com/systemd/systemd
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Merge pull request #26491 from dtardon/list-paths
Add systemctl list-paths
This commit is contained in:
Yu Watanabe
GitHub
commit
086234e39b
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@ -127,6 +127,26 @@ binfmt_misc /proc/sys/fs/binfmt_misc yes 0 proc-sys-fs-binfmt_mis
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><command>list-paths</command> <optional><replaceable>PATTERN</replaceable>…</optional></term>
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<listitem>
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<para>List path units currently in memory, ordered by path. If one or more
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<replaceable>PATTERN</replaceable>s are specified, only path units matching one of them are shown.
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Produces output similar to
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<programlisting>
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PATH CONDITION UNIT ACTIVATES
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/run/systemd/ask-password DirectoryNotEmpty systemd-ask-password-plymouth.path systemd-ask-password-plymouth.service
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/run/systemd/ask-password DirectoryNotEmpty systemd-ask-password-wall.path systemd-ask-password-wall.service
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/var/cache/cups/org.cups.cupsd PathExists cups.path cups.service
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3 paths listed.</programlisting>
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</para>
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<para>Also see <option>--show-types</option>, <option>--all</option>, and <option>--state=</option>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><command>list-sockets</command> <optional><replaceable>PATTERN</replaceable>…</optional></term>
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@ -216,7 +216,7 @@ _systemctl () {
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suspend-then-hibernate kexec list-jobs list-sockets
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list-timers list-units list-unit-files poweroff
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reboot rescue show-environment suspend get-default
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is-system-running preset-all list-automounts'
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is-system-running preset-all list-automounts list-paths'
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[FILE]='link switch-root bind mount-image'
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[TARGETS]='set-default'
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[MACHINES]='list-machines'
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@ -8,6 +8,7 @@
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local -a unit_commands=(
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# Unit Commands
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"list-automounts:List automounts"
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"list-paths:List paths"
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"list-sockets:List sockets"
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"list-timers:List timers"
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"list-units:List units"
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@ -6,6 +6,7 @@
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#include "bus-locator.h"
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#include "format-table.h"
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#include "locale-util.h"
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#include "path-util.h"
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#include "set.h"
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#include "sort-util.h"
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#include "systemctl-list-units.h"
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@ -101,6 +102,26 @@ static void output_legend(const char *type, size_t n_items) {
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printf("Pass --all to see loaded but inactive %ss, too.\n", type);
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}
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static int table_add_triggered(Table *table, char **triggered) {
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assert(table);
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if (strv_isempty(triggered))
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return table_add_cell(table, NULL, TABLE_EMPTY, NULL);
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else if (strv_length(triggered) == 1)
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return table_add_cell(table, NULL, TABLE_STRING, triggered[0]);
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else
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/* This should never happen, currently our socket units can only trigger a
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* single unit. But let's handle this anyway, who knows what the future
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* brings? */
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return table_add_cell(table, NULL, TABLE_STRV, triggered);
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}
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static char *format_unit_id(const char *unit, const char *machine) {
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assert(unit);
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return machine ? strjoin(machine, ":", unit) : strdup(unit);
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}
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static int output_units_list(const UnitInfo *unit_infos, size_t c) {
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_cleanup_(table_unrefp) Table *table = NULL;
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size_t job_count = 0;
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@ -123,9 +144,8 @@ static int output_units_list(const UnitInfo *unit_infos, size_t c) {
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table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
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for (const UnitInfo *u = unit_infos; unit_infos && (size_t) (u - unit_infos) < c; u++) {
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_cleanup_free_ char *j = NULL;
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const char *on_underline = "", *on_loaded = "", *on_active = "";
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const char *on_circle = "", *id;
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_cleanup_free_ char *id = NULL;
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const char *on_underline = "", *on_loaded = "", *on_active = "", *on_circle = "";
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bool circle = false, underline = false;
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if (u + 1 < unit_infos + c &&
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@ -148,14 +168,9 @@ static int output_units_list(const UnitInfo *unit_infos, size_t c) {
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on_loaded = on_underline;
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}
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if (u->machine) {
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j = strjoin(u->machine, ":", u->id);
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if (!j)
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return log_oom();
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id = j;
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} else
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id = u->id;
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id = format_unit_id(u->id, u->machine);
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if (!id)
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return log_oom();
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r = table_add_many(table,
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TABLE_STRING, circle ? special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE) : " ",
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@ -384,33 +399,20 @@ static int output_sockets_list(struct socket_info *socket_infos, size_t cs) {
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table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
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for (struct socket_info *s = socket_infos; s < socket_infos + cs; s++) {
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_cleanup_free_ char *j = NULL;
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const char *path;
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_cleanup_free_ char *unit = NULL;
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if (s->machine) {
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j = strjoin(s->machine, ":", s->path);
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if (!j)
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return log_oom();
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path = j;
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} else
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path = s->path;
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unit = format_unit_id(s->id, s->machine);
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if (!unit)
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return log_oom();
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r = table_add_many(table,
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TABLE_STRING, path,
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TABLE_STRING, s->path,
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TABLE_STRING, s->type,
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TABLE_STRING, s->id);
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TABLE_STRING, unit);
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if (r < 0)
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return table_log_add_error(r);
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if (strv_isempty(s->triggered))
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r = table_add_cell(table, NULL, TABLE_EMPTY, NULL);
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else if (strv_length(s->triggered) == 1)
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r = table_add_cell(table, NULL, TABLE_STRING, s->triggered[0]);
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else
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/* This should never happen, currently our socket units can only trigger a
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* single unit. But let's handle this anyway, who knows what the future
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* brings? */
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r = table_add_cell(table, NULL, TABLE_STRV, s->triggered);
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r = table_add_triggered(table, s->triggered);
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if (r < 0)
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return table_log_add_error(r);
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}
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@ -615,19 +617,10 @@ static int output_timers_list(struct timer_info *timer_infos, size_t n) {
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table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
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for (struct timer_info *t = timer_infos; t < timer_infos + n; t++) {
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_cleanup_free_ char *j = NULL, *activates = NULL;
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const char *unit;
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_cleanup_free_ char *unit = NULL;
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if (t->machine) {
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j = strjoin(t->machine, ":", t->id);
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if (!j)
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return log_oom();
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unit = j;
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} else
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unit = t->id;
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activates = strv_join(t->triggered, ", ");
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if (!activates)
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unit = format_unit_id(t->id, t->machine);
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if (!unit)
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return log_oom();
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r = table_add_many(table,
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@ -635,8 +628,11 @@ static int output_timers_list(struct timer_info *timer_infos, size_t n) {
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TABLE_TIMESTAMP_RELATIVE, t->next_elapse,
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TABLE_TIMESTAMP, t->last_trigger,
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TABLE_TIMESTAMP_RELATIVE, t->last_trigger,
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TABLE_STRING, unit,
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TABLE_STRING, activates);
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TABLE_STRING, unit);
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if (r < 0)
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return table_log_add_error(r);
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r = table_add_triggered(table, t->triggered);
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if (r < 0)
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return table_log_add_error(r);
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}
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@ -847,16 +843,11 @@ static int output_automounts_list(struct automount_info *infos, size_t n_infos)
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table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
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for (struct automount_info *info = infos; info < infos + n_infos; info++) {
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_cleanup_free_ char *j = NULL;
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const char *unit;
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_cleanup_free_ char *unit = NULL;
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if (info->machine) {
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j = strjoin(info->machine, ":", info->id);
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if (!j)
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return log_oom();
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unit = j;
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} else
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unit = info->id;
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unit = format_unit_id(info->id, info->machine);
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if (!unit)
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return log_oom();
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r = table_add_many(table,
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TABLE_STRING, info->what,
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@ -932,3 +923,215 @@ int verb_list_automounts(int argc, char *argv[], void *userdata) {
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return r;
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}
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struct path_info {
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const char *machine;
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const char *id;
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char *path;
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char *condition;
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/* Note: triggered is a list here, although it almost certainly will always be one
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* unit. Nevertheless, dbus API allows for multiple values, so let's follow that. */
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char** triggered;
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};
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struct path_infos {
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size_t count;
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struct path_info *items;
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};
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static int path_info_compare(const struct path_info *a, const struct path_info *b) {
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int r;
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assert(a);
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assert(b);
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r = strcasecmp_ptr(a->machine, b->machine);
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if (r != 0)
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return r;
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r = path_compare(a->path, b->path);
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if (r != 0)
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return r;
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r = strcmp(a->condition, b->condition);
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if (r != 0)
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return r;
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return strcasecmp_ptr(a->id, b->id);
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}
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static void path_infos_done(struct path_infos *ps) {
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assert(ps);
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assert(ps->items || ps->count == 0);
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for (struct path_info *p = ps->items; p < ps->items + ps->count; p++) {
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free(p->condition);
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free(p->path);
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strv_free(p->triggered);
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}
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free(ps->items);
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}
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static int get_paths(sd_bus *bus, const char *unit_path, char ***ret_conditions, char ***ret_paths) {
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_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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_cleanup_strv_free_ char **conditions = NULL, **paths = NULL;
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const char *condition, *path;
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int r, n = 0;
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assert(bus);
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assert(unit_path);
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assert(ret_conditions);
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assert(ret_paths);
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r = sd_bus_get_property(bus,
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"org.freedesktop.systemd1",
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unit_path,
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"org.freedesktop.systemd1.Path",
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"Paths",
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&error,
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&reply,
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"a(ss)");
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if (r < 0)
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return log_error_errno(r, "Failed to get paths: %s", bus_error_message(&error, r));
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r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
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if (r < 0)
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return bus_log_parse_error(r);
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while ((r = sd_bus_message_read(reply, "(ss)", &condition, &path)) > 0) {
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if (strv_extend(&conditions, condition) < 0)
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return log_oom();
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if (strv_extend(&paths, path) < 0)
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return log_oom();
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n++;
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}
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_exit_container(reply);
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if (r < 0)
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return bus_log_parse_error(r);
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*ret_conditions = TAKE_PTR(conditions);
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*ret_paths = TAKE_PTR(paths);
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return n;
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}
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static int output_paths_list(struct path_infos *ps) {
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_cleanup_(table_unrefp) Table *table = NULL;
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int r;
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assert(ps);
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assert(ps->items || ps->count == 0);
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table = table_new("path", "condition", "unit", "activates");
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if (!table)
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return log_oom();
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table_set_header(table, arg_legend != 0);
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if (arg_full)
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table_set_width(table, 0);
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table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
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for (struct path_info *p = ps->items; p < ps->items + ps->count; p++) {
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_cleanup_free_ char *unit = NULL;
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unit = format_unit_id(p->id, p->machine);
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if (!unit)
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return log_oom();
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r = table_add_many(table,
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TABLE_STRING, p->path,
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TABLE_STRING, p->condition,
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TABLE_STRING, unit);
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if (r < 0)
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return table_log_add_error(r);
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r = table_add_triggered(table, p->triggered);
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if (r < 0)
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return table_log_add_error(r);
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}
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r = output_table(table);
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if (r < 0)
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return r;
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if (arg_legend != 0)
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output_legend("path", ps->count);
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return 0;
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}
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int verb_list_paths(int argc, char *argv[], void *userdata) {
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_cleanup_(message_set_freep) Set *replies = NULL;
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_cleanup_strv_free_ char **machines = NULL, **units = NULL;
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_cleanup_free_ UnitInfo *unit_infos = NULL;
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_cleanup_(path_infos_done) struct path_infos path_infos = {};
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int r, n;
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sd_bus *bus;
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r = acquire_bus(BUS_MANAGER, &bus);
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if (r < 0)
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return r;
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pager_open(arg_pager_flags);
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r = expand_unit_names(bus, strv_skip(argv, 1), ".path", &units, NULL);
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if (r < 0)
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return r;
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if (argc == 1 || units) {
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n = get_unit_list_recursive(bus, units, &unit_infos, &replies, &machines);
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if (n < 0)
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return n;
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for (const UnitInfo *u = unit_infos; u < unit_infos + n; u++) {
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_cleanup_strv_free_ char **conditions = NULL, **paths = NULL, **triggered = NULL;
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int c;
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if (!endswith(u->id, ".path"))
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continue;
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r = get_triggered_units(bus, u->unit_path, &triggered);
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if (r < 0)
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return r;
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c = get_paths(bus, u->unit_path, &conditions, &paths);
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if (c < 0)
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return c;
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if (!GREEDY_REALLOC(path_infos.items, path_infos.count + c))
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return log_oom();
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||||
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for (int i = c - 1; i >= 0; i--) {
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char **t;
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t = strv_copy(triggered);
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||||
if (!t)
|
||||
return log_oom();
|
||||
|
||||
path_infos.items[path_infos.count++] = (struct path_info) {
|
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.machine = u->machine,
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.id = u->id,
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.condition = TAKE_PTR(conditions[i]),
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.path = TAKE_PTR(paths[i]),
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.triggered = t,
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};
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}
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}
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typesafe_qsort(path_infos.items, path_infos.count, path_info_compare);
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}
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||||
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output_paths_list(&path_infos);
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||||
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return 0;
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||||
}
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|
|
|
|||
|
|
@ -5,5 +5,6 @@ int verb_list_units(int argc, char *argv[], void *userdata);
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int verb_list_sockets(int argc, char *argv[], void *userdata);
|
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int verb_list_timers(int argc, char *argv[], void *userdata);
|
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int verb_list_automounts(int argc, char *argv[], void *userdata);
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int verb_list_paths(int argc, char *argv[], void *userdata);
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usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next);
|
||||
|
|
|
|||
|
|
@ -152,6 +152,8 @@ static int systemctl_help(void) {
|
|||
" list-units [PATTERN...] List units currently in memory\n"
|
||||
" list-automounts [PATTERN...] List automount units currently in memory,\n"
|
||||
" ordered by path\n"
|
||||
" list-paths [PATTERN...] List path units currently in memory,\n"
|
||||
" ordered by path\n"
|
||||
" list-sockets [PATTERN...] List socket units currently in memory,\n"
|
||||
" ordered by address\n"
|
||||
" list-timers [PATTERN...] List timer units currently in memory,\n"
|
||||
|
|
@ -1091,6 +1093,7 @@ static int systemctl_main(int argc, char *argv[]) {
|
|||
{ "list-units", VERB_ANY, VERB_ANY, VERB_DEFAULT|VERB_ONLINE_ONLY, verb_list_units },
|
||||
{ "list-unit-files", VERB_ANY, VERB_ANY, 0, verb_list_unit_files },
|
||||
{ "list-automounts", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_list_automounts },
|
||||
{ "list-paths", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_list_paths },
|
||||
{ "list-sockets", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_list_sockets },
|
||||
{ "list-timers", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_list_timers },
|
||||
{ "list-jobs", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_list_jobs },
|
||||
|
|
|
|||
|
|
@ -105,6 +105,8 @@ systemctl list-jobs "*"
|
|||
systemctl list-dependencies sysinit.target --type=socket,mount
|
||||
systemctl list-dependencies multi-user.target --state=active
|
||||
systemctl list-dependencies sysinit.target --state=mounted --all
|
||||
systemctl list-paths
|
||||
systemctl list-paths --legend=no -a "systemd*"
|
||||
|
||||
# is-* verbs
|
||||
# Should return 4 for a missing unit file
|
||||
|
|
|
|||
Loading…
Reference in a new issue