mirror of
https://github.com/systemd/systemd.git
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876 lines
26 KiB
C
876 lines
26 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2012 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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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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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <locale.h>
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#include <stdio.h>
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#include <string.h>
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#include <getopt.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "systemd/sd-journal.h"
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#include "build.h"
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#include "set.h"
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#include "util.h"
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#include "log.h"
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#include "path-util.h"
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#include "pager.h"
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#include "macro.h"
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#include "journal-internal.h"
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#include "copy.h"
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#include "compress.h"
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static enum {
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ACTION_NONE,
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ACTION_INFO,
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ACTION_LIST,
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ACTION_DUMP,
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ACTION_GDB,
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} arg_action = ACTION_LIST;
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static const char* arg_field = NULL;
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static int arg_no_pager = false;
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static int arg_no_legend = false;
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static int arg_one = false;
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static FILE* output = NULL;
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static Set *new_matches(void) {
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Set *set;
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char *tmp;
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int r;
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set = set_new(NULL);
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if (!set) {
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log_oom();
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return NULL;
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}
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tmp = strdup("MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1");
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if (!tmp) {
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log_oom();
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set_free(set);
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return NULL;
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}
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r = set_consume(set, tmp);
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if (r < 0) {
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log_error_errno(r, "failed to add to set: %m");
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set_free(set);
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return NULL;
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}
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return set;
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}
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static int add_match(Set *set, const char *match) {
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int r = -ENOMEM;
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unsigned pid;
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const char* prefix;
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char *pattern = NULL;
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_cleanup_free_ char *p = NULL;
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if (strchr(match, '='))
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prefix = "";
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else if (strchr(match, '/')) {
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p = path_make_absolute_cwd(match);
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if (!p)
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goto fail;
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match = p;
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prefix = "COREDUMP_EXE=";
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}
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else if (safe_atou(match, &pid) == 0)
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prefix = "COREDUMP_PID=";
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else
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prefix = "COREDUMP_COMM=";
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pattern = strjoin(prefix, match, NULL);
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if (!pattern)
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goto fail;
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log_debug("Adding pattern: %s", pattern);
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r = set_consume(set, pattern);
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if (r < 0) {
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log_error_errno(r, "Failed to add pattern: %m");
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goto fail;
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}
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return 0;
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fail:
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log_error_errno(r, "Failed to add match: %m");
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return r;
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}
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static void help(void) {
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printf("%s [OPTIONS...]\n\n"
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"List or retrieve coredumps from the journal.\n\n"
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"Flags:\n"
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" -h --help Show this help\n"
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" --version Print version string\n"
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" --no-pager Do not pipe output into a pager\n"
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" --no-legend Do not print the column headers.\n"
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" -1 Show information about most recent entry only\n"
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" -F --field=FIELD List all values a certain field takes\n"
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" -o --output=FILE Write output to FILE\n\n"
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"Commands:\n"
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" list [MATCHES...] List available coredumps (default)\n"
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" info [MATCHES...] Show detailed information about one or more coredumps\n"
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" dump [MATCHES...] Print first matching coredump to stdout\n"
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" gdb [MATCHES...] Start gdb for the first matching coredump\n"
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, program_invocation_short_name);
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}
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static int parse_argv(int argc, char *argv[], Set *matches) {
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enum {
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ARG_VERSION = 0x100,
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ARG_NO_PAGER,
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ARG_NO_LEGEND,
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};
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int r, c;
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version" , no_argument, NULL, ARG_VERSION },
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{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
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{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
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{ "output", required_argument, NULL, 'o' },
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{ "field", required_argument, NULL, 'F' },
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{}
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};
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assert(argc >= 0);
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assert(argv);
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while ((c = getopt_long(argc, argv, "ho:F:1", options, NULL)) >= 0)
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switch(c) {
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case 'h':
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arg_action = ACTION_NONE;
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help();
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return 0;
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case ARG_VERSION:
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arg_action = ACTION_NONE;
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puts(PACKAGE_STRING);
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puts(SYSTEMD_FEATURES);
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return 0;
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case ARG_NO_PAGER:
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arg_no_pager = true;
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break;
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case ARG_NO_LEGEND:
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arg_no_legend = true;
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break;
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case 'o':
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if (output) {
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log_error("cannot set output more than once");
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return -EINVAL;
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}
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output = fopen(optarg, "we");
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if (!output) {
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log_error("writing to '%s': %m", optarg);
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return -errno;
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}
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break;
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case 'F':
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if (arg_field) {
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log_error("cannot use --field/-F more than once");
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return -EINVAL;
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}
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arg_field = optarg;
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break;
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case '1':
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arg_one = true;
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break;
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case '?':
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return -EINVAL;
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default:
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assert_not_reached("Unhandled option");
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}
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if (optind < argc) {
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const char *cmd = argv[optind++];
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if (streq(cmd, "list"))
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arg_action = ACTION_LIST;
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else if (streq(cmd, "dump"))
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arg_action = ACTION_DUMP;
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else if (streq(cmd, "gdb"))
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arg_action = ACTION_GDB;
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else if (streq(cmd, "info"))
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arg_action = ACTION_INFO;
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else {
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log_error("Unknown action '%s'", cmd);
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return -EINVAL;
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}
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}
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if (arg_field && arg_action != ACTION_LIST) {
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log_error("Option --field/-F only makes sense with list");
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return -EINVAL;
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}
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while (optind < argc) {
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r = add_match(matches, argv[optind]);
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if (r != 0)
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return r;
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optind++;
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}
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return 0;
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}
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static int retrieve(const void *data,
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size_t len,
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const char *name,
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char **var) {
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size_t ident;
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char *v;
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ident = strlen(name) + 1; /* name + "=" */
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if (len < ident)
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return 0;
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if (memcmp(data, name, ident - 1) != 0)
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return 0;
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if (((const char*) data)[ident - 1] != '=')
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return 0;
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v = strndup((const char*)data + ident, len - ident);
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if (!v)
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return log_oom();
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free(*var);
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*var = v;
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return 0;
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}
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static void print_field(FILE* file, sd_journal *j) {
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_cleanup_free_ char *value = NULL;
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const void *d;
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size_t l;
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assert(file);
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assert(j);
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assert(arg_field);
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SD_JOURNAL_FOREACH_DATA(j, d, l)
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retrieve(d, l, arg_field, &value);
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if (value)
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fprintf(file, "%s\n", value);
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}
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static int print_list(FILE* file, sd_journal *j, int had_legend) {
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_cleanup_free_ char
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*pid = NULL, *uid = NULL, *gid = NULL,
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*sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL,
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*filename = NULL;
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const void *d;
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size_t l;
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usec_t t;
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char buf[FORMAT_TIMESTAMP_MAX];
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int r;
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bool present;
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assert(file);
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assert(j);
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SD_JOURNAL_FOREACH_DATA(j, d, l) {
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retrieve(d, l, "COREDUMP_PID", &pid);
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retrieve(d, l, "COREDUMP_UID", &uid);
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retrieve(d, l, "COREDUMP_GID", &gid);
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retrieve(d, l, "COREDUMP_SIGNAL", &sgnl);
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retrieve(d, l, "COREDUMP_EXE", &exe);
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retrieve(d, l, "COREDUMP_COMM", &comm);
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retrieve(d, l, "COREDUMP_CMDLINE", &cmdline);
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retrieve(d, l, "COREDUMP_FILENAME", &filename);
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}
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if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline && !filename) {
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log_warning("Empty coredump log entry");
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return -EINVAL;
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}
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r = sd_journal_get_realtime_usec(j, &t);
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if (r < 0) {
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log_error_errno(r, "Failed to get realtime timestamp: %m");
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return r;
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}
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format_timestamp(buf, sizeof(buf), t);
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present = filename && access(filename, F_OK) == 0;
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if (!had_legend && !arg_no_legend)
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fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n",
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FORMAT_TIMESTAMP_WIDTH, "TIME",
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6, "PID",
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5, "UID",
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5, "GID",
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3, "SIG",
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1, "PRESENT",
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"EXE");
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fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n",
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FORMAT_TIMESTAMP_WIDTH, buf,
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6, strna(pid),
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5, strna(uid),
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5, strna(gid),
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3, strna(sgnl),
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1, present ? "*" : "",
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strna(exe ?: (comm ?: cmdline)));
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return 0;
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}
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static int print_info(FILE *file, sd_journal *j, bool need_space) {
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_cleanup_free_ char
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*pid = NULL, *uid = NULL, *gid = NULL,
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*sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL,
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*unit = NULL, *user_unit = NULL, *session = NULL,
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*boot_id = NULL, *machine_id = NULL, *hostname = NULL,
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*slice = NULL, *cgroup = NULL, *owner_uid = NULL,
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*message = NULL, *timestamp = NULL, *filename = NULL;
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const void *d;
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size_t l;
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int r;
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assert(file);
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assert(j);
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SD_JOURNAL_FOREACH_DATA(j, d, l) {
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retrieve(d, l, "COREDUMP_PID", &pid);
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retrieve(d, l, "COREDUMP_UID", &uid);
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retrieve(d, l, "COREDUMP_GID", &gid);
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retrieve(d, l, "COREDUMP_SIGNAL", &sgnl);
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retrieve(d, l, "COREDUMP_EXE", &exe);
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retrieve(d, l, "COREDUMP_COMM", &comm);
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retrieve(d, l, "COREDUMP_CMDLINE", &cmdline);
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retrieve(d, l, "COREDUMP_UNIT", &unit);
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retrieve(d, l, "COREDUMP_USER_UNIT", &user_unit);
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retrieve(d, l, "COREDUMP_SESSION", &session);
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retrieve(d, l, "COREDUMP_OWNER_UID", &owner_uid);
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retrieve(d, l, "COREDUMP_SLICE", &slice);
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retrieve(d, l, "COREDUMP_CGROUP", &cgroup);
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retrieve(d, l, "COREDUMP_TIMESTAMP", ×tamp);
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retrieve(d, l, "COREDUMP_FILENAME", &filename);
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retrieve(d, l, "_BOOT_ID", &boot_id);
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retrieve(d, l, "_MACHINE_ID", &machine_id);
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retrieve(d, l, "_HOSTNAME", &hostname);
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retrieve(d, l, "MESSAGE", &message);
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}
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if (need_space)
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fputs("\n", file);
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if (comm)
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fprintf(file,
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" PID: %s%s%s (%s)\n",
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ansi_highlight(), strna(pid), ansi_highlight_off(), comm);
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else
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fprintf(file,
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" PID: %s%s%s\n",
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ansi_highlight(), strna(pid), ansi_highlight_off());
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if (uid) {
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uid_t n;
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if (parse_uid(uid, &n) >= 0) {
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_cleanup_free_ char *u = NULL;
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u = uid_to_name(n);
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fprintf(file,
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" UID: %s (%s)\n",
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uid, u);
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} else {
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fprintf(file,
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" UID: %s\n",
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uid);
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}
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}
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if (gid) {
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gid_t n;
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if (parse_gid(gid, &n) >= 0) {
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_cleanup_free_ char *g = NULL;
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g = gid_to_name(n);
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fprintf(file,
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" GID: %s (%s)\n",
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gid, g);
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} else {
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fprintf(file,
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" GID: %s\n",
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gid);
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}
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}
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if (sgnl) {
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int sig;
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if (safe_atoi(sgnl, &sig) >= 0)
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fprintf(file, " Signal: %s (%s)\n", sgnl, signal_to_string(sig));
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else
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fprintf(file, " Signal: %s\n", sgnl);
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}
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if (timestamp) {
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usec_t u;
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r = safe_atou64(timestamp, &u);
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if (r >= 0) {
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char absolute[FORMAT_TIMESTAMP_MAX], relative[FORMAT_TIMESPAN_MAX];
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fprintf(file,
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" Timestamp: %s (%s)\n",
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format_timestamp(absolute, sizeof(absolute), u),
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format_timestamp_relative(relative, sizeof(relative), u));
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} else
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fprintf(file, " Timestamp: %s\n", timestamp);
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}
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if (cmdline)
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fprintf(file, " Command Line: %s\n", cmdline);
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if (exe)
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fprintf(file, " Executable: %s%s%s\n", ansi_highlight(), exe, ansi_highlight_off());
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if (cgroup)
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fprintf(file, " Control Group: %s\n", cgroup);
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if (unit)
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fprintf(file, " Unit: %s\n", unit);
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if (user_unit)
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fprintf(file, " User Unit: %s\n", unit);
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if (slice)
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fprintf(file, " Slice: %s\n", slice);
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if (session)
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fprintf(file, " Session: %s\n", session);
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if (owner_uid) {
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uid_t n;
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if (parse_uid(owner_uid, &n) >= 0) {
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_cleanup_free_ char *u = NULL;
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u = uid_to_name(n);
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fprintf(file,
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" Owner UID: %s (%s)\n",
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owner_uid, u);
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} else {
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fprintf(file,
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" Owner UID: %s\n",
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owner_uid);
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}
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}
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if (boot_id)
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fprintf(file, " Boot ID: %s\n", boot_id);
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if (machine_id)
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fprintf(file, " Machine ID: %s\n", machine_id);
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if (hostname)
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fprintf(file, " Hostname: %s\n", hostname);
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if (filename && access(filename, F_OK) == 0)
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fprintf(file, " Coredump: %s\n", filename);
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if (message) {
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_cleanup_free_ char *m = NULL;
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m = strreplace(message, "\n", "\n ");
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fprintf(file, " Message: %s\n", strstrip(m ?: message));
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}
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return 0;
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}
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static int focus(sd_journal *j) {
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int r;
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r = sd_journal_seek_tail(j);
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if (r == 0)
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r = sd_journal_previous(j);
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if (r < 0) {
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log_error_errno(r, "Failed to search journal: %m");
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return r;
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}
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if (r == 0) {
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log_error("No match found.");
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return -ESRCH;
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}
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return r;
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}
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static void print_entry(sd_journal *j, unsigned n_found) {
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assert(j);
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if (arg_action == ACTION_INFO)
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print_info(stdout, j, n_found);
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else if (arg_field)
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print_field(stdout, j);
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else
|
|
print_list(stdout, j, n_found);
|
|
}
|
|
|
|
static int dump_list(sd_journal *j) {
|
|
unsigned n_found = 0;
|
|
int r;
|
|
|
|
assert(j);
|
|
|
|
/* The coredumps are likely to compressed, and for just
|
|
* listing them we don't need to decompress them, so let's
|
|
* pick a fairly low data threshold here */
|
|
sd_journal_set_data_threshold(j, 4096);
|
|
|
|
if (arg_one) {
|
|
r = focus(j);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
print_entry(j, 0);
|
|
} else {
|
|
SD_JOURNAL_FOREACH(j)
|
|
print_entry(j, n_found++);
|
|
|
|
if (!arg_field && n_found <= 0) {
|
|
log_notice("No coredumps found.");
|
|
return -ESRCH;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int save_core(sd_journal *j, int fd, char **path, bool *unlink_temp) {
|
|
const char *data;
|
|
_cleanup_free_ char *filename = NULL;
|
|
size_t len;
|
|
int r;
|
|
|
|
assert((fd >= 0) != !!path);
|
|
assert(!!path == !!unlink_temp);
|
|
|
|
/* Prefer uncompressed file to journal (probably cached) to
|
|
* compressed file (probably uncached). */
|
|
r = sd_journal_get_data(j, "COREDUMP_FILENAME", (const void**) &data, &len);
|
|
if (r < 0 && r != -ENOENT)
|
|
log_warning_errno(r, "Failed to retrieve COREDUMP_FILENAME: %m");
|
|
else if (r == 0)
|
|
retrieve(data, len, "COREDUMP_FILENAME", &filename);
|
|
|
|
if (filename && access(filename, R_OK) < 0) {
|
|
log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
|
|
"File %s is not readable: %m", filename);
|
|
free(filename);
|
|
filename = NULL;
|
|
}
|
|
|
|
if (filename && !endswith(filename, ".xz") && !endswith(filename, ".lz4")) {
|
|
if (path) {
|
|
*path = filename;
|
|
filename = NULL;
|
|
}
|
|
|
|
return 0;
|
|
} else {
|
|
_cleanup_close_ int fdt = -1;
|
|
char *temp = NULL;
|
|
|
|
if (fd < 0) {
|
|
temp = strdup("/var/tmp/coredump-XXXXXX");
|
|
if (!temp)
|
|
return log_oom();
|
|
|
|
fdt = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC);
|
|
if (fdt < 0) {
|
|
log_error("Failed to create temporary file: %m");
|
|
return -errno;
|
|
}
|
|
log_debug("Created temporary file %s", temp);
|
|
|
|
fd = fdt;
|
|
}
|
|
|
|
r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
|
|
if (r == 0) {
|
|
ssize_t sz;
|
|
|
|
assert(len >= 9);
|
|
data += 9;
|
|
len -= 9;
|
|
|
|
sz = write(fdt, data, len);
|
|
if (sz < 0) {
|
|
log_error("Failed to write temporary file: %m");
|
|
r = -errno;
|
|
goto error;
|
|
}
|
|
if (sz != (ssize_t) len) {
|
|
log_error("Short write to temporary file.");
|
|
r = -EIO;
|
|
goto error;
|
|
}
|
|
} else if (filename) {
|
|
#if defined(HAVE_XZ) || defined(HAVE_LZ4)
|
|
_cleanup_close_ int fdf;
|
|
|
|
fdf = open(filename, O_RDONLY | O_CLOEXEC);
|
|
if (fdf < 0) {
|
|
log_error("Failed to open %s: %m", filename);
|
|
r = -errno;
|
|
goto error;
|
|
}
|
|
|
|
r = decompress_stream(filename, fdf, fd, -1);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to decompress %s: %m", filename);
|
|
goto error;
|
|
}
|
|
#else
|
|
log_error("Cannot decompress file. Compiled without compression support.");
|
|
r = -ENOTSUP;
|
|
goto error;
|
|
#endif
|
|
} else {
|
|
if (r == -ENOENT)
|
|
log_error("Cannot retrieve coredump from journal nor disk.");
|
|
else
|
|
log_error_errno(r, "Failed to retrieve COREDUMP field: %m");
|
|
goto error;
|
|
}
|
|
|
|
if (temp) {
|
|
*path = temp;
|
|
*unlink_temp = true;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (temp) {
|
|
unlink(temp);
|
|
log_debug("Removed temporary file %s", temp);
|
|
}
|
|
return r;
|
|
}
|
|
}
|
|
|
|
static int dump_core(sd_journal* j) {
|
|
int r;
|
|
|
|
assert(j);
|
|
|
|
r = focus(j);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
print_info(output ? stdout : stderr, j, false);
|
|
|
|
if (on_tty() && !output) {
|
|
log_error("Refusing to dump core to tty.");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
r = save_core(j, output ? fileno(output) : STDOUT_FILENO, NULL, NULL);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Coredump retrieval failed: %m");
|
|
return r;
|
|
}
|
|
|
|
r = sd_journal_previous(j);
|
|
if (r >= 0)
|
|
log_warning("More than one entry matches, ignoring rest.");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int run_gdb(sd_journal *j) {
|
|
_cleanup_free_ char *exe = NULL, *path = NULL;
|
|
bool unlink_path = false;
|
|
const char *data;
|
|
siginfo_t st;
|
|
size_t len;
|
|
pid_t pid;
|
|
int r;
|
|
|
|
assert(j);
|
|
|
|
r = focus(j);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
print_info(stdout, j, false);
|
|
fputs("\n", stdout);
|
|
|
|
r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to retrieve COREDUMP_EXE field: %m");
|
|
return r;
|
|
}
|
|
|
|
assert(len > strlen("COREDUMP_EXE="));
|
|
data += strlen("COREDUMP_EXE=");
|
|
len -= strlen("COREDUMP_EXE=");
|
|
|
|
exe = strndup(data, len);
|
|
if (!exe)
|
|
return log_oom();
|
|
|
|
if (endswith(exe, " (deleted)")) {
|
|
log_error("Binary already deleted.");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (!path_is_absolute(exe)) {
|
|
log_error("Binary is not an absolute path.");
|
|
return -ENOENT;
|
|
}
|
|
|
|
r = save_core(j, -1, &path, &unlink_path);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to retrieve core: %m");
|
|
return r;
|
|
}
|
|
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
log_error("Failed to fork(): %m");
|
|
r = -errno;
|
|
goto finish;
|
|
}
|
|
if (pid == 0) {
|
|
execlp("gdb", "gdb", exe, path, NULL);
|
|
|
|
log_error("Failed to invoke gdb: %m");
|
|
_exit(1);
|
|
}
|
|
|
|
r = wait_for_terminate(pid, &st);
|
|
if (r < 0) {
|
|
log_error("Failed to wait for gdb: %m");
|
|
goto finish;
|
|
}
|
|
|
|
r = st.si_code == CLD_EXITED ? st.si_status : 255;
|
|
|
|
finish:
|
|
if (unlink_path) {
|
|
log_debug("Removed temporary file %s", path);
|
|
unlink(path);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
_cleanup_journal_close_ sd_journal*j = NULL;
|
|
const char* match;
|
|
Iterator it;
|
|
int r = 0;
|
|
_cleanup_set_free_free_ Set *matches = NULL;
|
|
|
|
setlocale(LC_ALL, "");
|
|
log_parse_environment();
|
|
log_open();
|
|
|
|
matches = new_matches();
|
|
if (!matches) {
|
|
r = -ENOMEM;
|
|
goto end;
|
|
}
|
|
|
|
r = parse_argv(argc, argv, matches);
|
|
if (r < 0)
|
|
goto end;
|
|
|
|
if (arg_action == ACTION_NONE)
|
|
goto end;
|
|
|
|
r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to open journal: %m");
|
|
goto end;
|
|
}
|
|
|
|
/* We want full data, nothing truncated. */
|
|
sd_journal_set_data_threshold(j, 0);
|
|
|
|
SET_FOREACH(match, matches, it) {
|
|
r = sd_journal_add_match(j, match, strlen(match));
|
|
if (r != 0) {
|
|
log_error("Failed to add match '%s': %s",
|
|
match, strerror(-r));
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) {
|
|
_cleanup_free_ char *filter;
|
|
|
|
filter = journal_make_match_string(j);
|
|
log_debug("Journal filter: %s", filter);
|
|
}
|
|
|
|
switch(arg_action) {
|
|
|
|
case ACTION_LIST:
|
|
case ACTION_INFO:
|
|
if (!arg_no_pager)
|
|
pager_open(false);
|
|
|
|
r = dump_list(j);
|
|
break;
|
|
|
|
case ACTION_DUMP:
|
|
r = dump_core(j);
|
|
break;
|
|
|
|
case ACTION_GDB:
|
|
r = run_gdb(j);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Shouldn't be here");
|
|
}
|
|
|
|
end:
|
|
pager_close();
|
|
|
|
if (output)
|
|
fclose(output);
|
|
|
|
return r >= 0 ? r : EXIT_FAILURE;
|
|
}
|