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inhibit: use format-table to format systemd-inhibit --list

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This changes the output a bit, as the previous multi-line output of each
inhibitor is changed to a single line, but it does unify the output look
with the one of our other tools. Moreover this adds proper sorting.
This commit is contained in:
Lennart Poettering 2018-09-19 21:21:45 +03:00
parent 2f47ef04ea
commit a942661787
2 changed files with 58 additions and 18 deletions
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1
man/systemd-inhibit.xml
View File

@ -119,6 +119,7 @@
</varlistentry>
<xi:include href="standard-options.xml" xpointer="no-pager" />
<xi:include href="standard-options.xml" xpointer="no-legend" />
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>

75
src/login/inhibit.c
View File

@ -12,6 +12,7 @@
#include "bus-error.h"
#include "bus-util.h"
#include "fd-util.h"
#include "format-table.h"
#include "format-util.h"
#include "pager.h"
#include "process-util.h"
@ -26,6 +27,7 @@ static const char* arg_who = NULL;
static const char* arg_why = "Unknown reason";
static const char* arg_mode = NULL;
static bool arg_no_pager = false;
static bool arg_legend = true;
static enum {
ACTION_INHIBIT,
@ -63,9 +65,7 @@ static int inhibit(sd_bus *bus, sd_bus_error *error) {
static int print_inhibitors(sd_bus *bus) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
const char *what, *who, *why, *mode;
uint32_t uid, pid;
size_t n = 0;
_cleanup_(table_unrefp) Table *table = NULL;
int r;
(void) pager_open(arg_no_pager, false);
@ -82,38 +82,70 @@ static int print_inhibitors(sd_bus *bus) {
if (r < 0)
return log_error_errno(r, "Could not get active inhibitors: %s", bus_error_message(&error, r));
table = table_new("WHO", "UID", "USER", "PID", "COMM", "WHAT", "WHY", "MODE");
if (!table)
return log_oom();
/* If there's not enough space, shorten the "WHY" column, as it's little more than an explaining comment. */
(void) table_set_weight(table, TABLE_HEADER_CELL(6), 20);
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
for (;;) {
_cleanup_free_ char *comm = NULL, *u = NULL;
const char *what, *who, *why, *mode;
uint32_t uid, pid;
r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid);
if (r < 0)
return bus_log_parse_error(r);
if (r == 0)
break;
if (arg_mode && !streq(mode, arg_mode))
continue;
get_process_comm(pid, &comm);
(void) get_process_comm(pid, &comm);
u = uid_to_name(uid);
printf(" Who: %s (UID %" PRIu32 "/%s, PID %" PRIu32"/%s)\n"
" What: %s\n"
" Why: %s\n"
" Mode: %s\n\n",
who, uid, strna(u), pid, strna(comm),
what,
why,
mode);
n++;
r = table_add_many(table,
TABLE_STRING, who,
TABLE_UINT32, uid,
TABLE_STRING, strna(u),
TABLE_UINT32, pid,
TABLE_STRING, strna(comm),
TABLE_STRING, what,
TABLE_STRING, why,
TABLE_STRING, mode);
if (r < 0)
return log_error_errno(r, "Failed to add table row: %m");
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
printf("%zu inhibitors listed.\n", n);
if (table_get_rows(table) > 1) {
r = table_set_sort(table, (size_t) 1, (size_t) 0, (size_t) 5, (size_t) 6, (size_t) -1);
if (r < 0)
return log_error_errno(r, "Failed to sort table: %m");
table_set_header(table, arg_legend);
r = table_print(table, NULL);
if (r < 0)
return log_error_errno(r, "Failed to show table: %m");
}
if (arg_legend) {
if (table_get_rows(table) > 1)
printf("\n%zu inhibitors listed.\n", table_get_rows(table) - 1);
else
printf("No inhibitors.\n");
}
return 0;
}
@ -130,6 +162,7 @@ static int help(void) {
" -h --help Show this help\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" --no-legend Do not show the headers and footers\n"
" --what=WHAT Operations to inhibit, colon separated list of:\n"
" shutdown, sleep, idle, handle-power-key,\n"
" handle-suspend-key, handle-hibernate-key,\n"
@ -156,6 +189,7 @@ static int parse_argv(int argc, char *argv[]) {
ARG_MODE,
ARG_LIST,
ARG_NO_PAGER,
ARG_NO_LEGEND,
};
static const struct option options[] = {
@ -167,6 +201,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "mode", required_argument, NULL, ARG_MODE },
{ "list", no_argument, NULL, ARG_LIST },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
{}
};
@ -209,6 +244,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_no_pager = true;
break;
case ARG_NO_LEGEND:
arg_legend = false;
break;
case '?':
return -EINVAL;