153 lines
4.0 KiB
C
153 lines
4.0 KiB
C
/*
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* lsirq - utility to display kernel interrupt information.
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*
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* Copyright (C) 2019 zhenwei pi <pizhenwei@bytedance.com>
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* Copyright (C) 2020 Karel Zak <kzak@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <getopt.h>
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#include <limits.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <libsmartcols.h>
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#include "closestream.h"
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#include "optutils.h"
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#include "strutils.h"
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#include "xalloc.h"
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#include "irq-common.h"
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static int print_irq_data(struct irq_output *out, int softirq)
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{
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struct libscols_table *table;
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table = get_scols_table(out, NULL, NULL, softirq);
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if (!table)
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return -1;
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scols_print_table(table);
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scols_unref_table(table);
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return 0;
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}
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static void __attribute__((__noreturn__)) usage(void)
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{
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fputs(USAGE_HEADER, stdout);
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printf(_(" %s [options]\n"), program_invocation_short_name);
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fputs(USAGE_SEPARATOR, stdout);
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puts(_("Utility to display kernel interrupt information."));
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fputs(USAGE_OPTIONS, stdout);
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fputs(_(" -J, --json use JSON output format\n"), stdout);
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fputs(_(" -P, --pairs use key=\"value\" output format\n"), stdout);
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fputs(_(" -n, --noheadings don't print headings\n"), stdout);
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fputs(_(" -o, --output <list> define which output columns to use\n"), stdout);
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fputs(_(" -s, --sort <column> specify sort column\n"), stdout);
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fputs(_(" -S, --softirq show softirqs instead of interrupts\n"), stdout);
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fputs(USAGE_SEPARATOR, stdout);
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printf(USAGE_HELP_OPTIONS(22));
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fputs(USAGE_COLUMNS, stdout);
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irq_print_columns(stdout, 1);
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printf(USAGE_MAN_TAIL("lsirq(1)"));
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exit(EXIT_SUCCESS);
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}
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int main(int argc, char **argv)
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{
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struct irq_output out = {
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.ncolumns = 0
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};
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static const struct option longopts[] = {
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{"sort", required_argument, NULL, 's'},
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{"noheadings", no_argument, NULL, 'n'},
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{"output", required_argument, NULL, 'o'},
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{"softirq", no_argument, NULL, 'S'},
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{"json", no_argument, NULL, 'J'},
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{"pairs", no_argument, NULL, 'P'},
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{"help", no_argument, NULL, 'h'},
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{"version", no_argument, NULL, 'V'},
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{NULL, 0, NULL, 0}
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};
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int c;
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const char *outarg = NULL;
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static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
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{'J', 'P'},
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{0}
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};
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int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
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int softirq = 0;
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setlocale(LC_ALL, "");
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while ((c = getopt_long(argc, argv, "no:s:ShJPV", longopts, NULL)) != -1) {
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err_exclusive_options(c, longopts, excl, excl_st);
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switch (c) {
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case 'J':
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out.json = 1;
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break;
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case 'P':
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out.pairs = 1;
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break;
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case 'n':
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out.no_headings = 1;
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break;
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case 'o':
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outarg = optarg;
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break;
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case 's':
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set_sort_func_by_name(&out, optarg);
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break;
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case 'S':
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softirq = 1;
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break;
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case 'V':
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print_version(EXIT_SUCCESS);
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case 'h':
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usage();
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default:
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errtryhelp(EXIT_FAILURE);
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}
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}
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/* default */
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if (!out.ncolumns) {
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out.columns[out.ncolumns++] = COL_IRQ;
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out.columns[out.ncolumns++] = COL_TOTAL;
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out.columns[out.ncolumns++] = COL_NAME;
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}
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/* add -o [+]<list> to putput */
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if (outarg && string_add_to_idarray(outarg, out.columns,
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ARRAY_SIZE(out.columns),
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&out.ncolumns,
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irq_column_name_to_id) < 0)
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exit(EXIT_FAILURE);
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return print_irq_data(&out, softirq) == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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