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Diffstat (limited to 'src/journal/coredumpctl.c')
-rw-r--r--src/journal/coredumpctl.c583
1 files changed, 0 insertions, 583 deletions
diff --git a/src/journal/coredumpctl.c b/src/journal/coredumpctl.c
deleted file mode 100644
index 4adc9236f1..0000000000
--- a/src/journal/coredumpctl.c
+++ /dev/null
@@ -1,583 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2012 Zbigniew Jędrzejewski-Szmek
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <locale.h>
-#include <stdio.h>
-#include <string.h>
-#include <getopt.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <systemd/sd-journal.h>
-
-#include "build.h"
-#include "set.h"
-#include "util.h"
-#include "log.h"
-#include "path-util.h"
-#include "pager.h"
-
-static enum {
- ACTION_NONE,
- ACTION_LIST,
- ACTION_DUMP,
- ACTION_GDB,
-} arg_action = ACTION_LIST;
-
-static Set *matches = NULL;
-static FILE* output = NULL;
-static char* field = NULL;
-
-static int arg_no_pager = false;
-static int arg_no_legend = false;
-
-static Set *new_matches(void) {
- Set *set;
- char *tmp;
- int r;
-
- set = set_new(trivial_hash_func, trivial_compare_func);
- if (!set) {
- log_oom();
- return NULL;
- }
-
- tmp = strdup("MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1");
- if (!tmp) {
- log_oom();
- set_free(set);
- return NULL;
- }
-
- r = set_put(set, tmp);
- if (r < 0) {
- log_error("failed to add to set: %s", strerror(-r));
- free(tmp);
- set_free(set);
- return NULL;
- }
-
- return set;
-}
-
-static int help(void) {
- printf("%s [OPTIONS...] [MATCHES...]\n\n"
- "List or retrieve coredumps from the journal.\n\n"
- "Flags:\n"
- " -o --output=FILE Write output to FILE\n"
- " --no-pager Do not pipe output into a pager\n"
-
- "Commands:\n"
- " -h --help Show this help\n"
- " --version Print version string\n"
- " -F --field=FIELD List all values a certain field takes\n"
- " gdb Start gdb for the first matching coredump\n"
- " list List available coredumps\n"
- " dump PID Print coredump to stdout\n"
- " dump PATH Print coredump to stdout\n"
- , program_invocation_short_name);
-
- return 0;
-}
-
-static int add_match(Set *set, const char *match) {
- int r = -ENOMEM;
- unsigned pid;
- const char* prefix;
- char *pattern = NULL;
- char _cleanup_free_ *p = NULL;
-
- if (strchr(match, '='))
- prefix = "";
- else if (strchr(match, '/')) {
- p = path_make_absolute_cwd(match);
- if (!p)
- goto fail;
-
- match = p;
- prefix = "COREDUMP_EXE=";
- }
- else if (safe_atou(match, &pid) == 0)
- prefix = "COREDUMP_PID=";
- else
- prefix = "COREDUMP_COMM=";
-
- pattern = strjoin(prefix, match, NULL);
- if (!pattern)
- goto fail;
-
- r = set_put(set, pattern);
- if (r < 0) {
- log_error("failed to add pattern '%s': %s",
- pattern, strerror(-r));
- goto fail;
- }
- log_debug("Added pattern: %s", pattern);
-
- return 0;
-fail:
- free(pattern);
- log_error("failed to add match: %s", strerror(-r));
- return r;
-}
-
-static int parse_argv(int argc, char *argv[]) {
- enum {
- ARG_VERSION = 0x100,
- ARG_NO_PAGER,
- ARG_NO_LEGEND,
- };
-
- int r, c;
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version" , no_argument, NULL, ARG_VERSION },
- { "no-pager", no_argument, NULL, ARG_NO_PAGER },
- { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
- { "output", required_argument, NULL, 'o' },
- { "field", required_argument, NULL, 'F' },
- { NULL, 0, NULL, 0 }
- };
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "ho:F:", options, NULL)) >= 0)
- switch(c) {
- case 'h':
- help();
- arg_action = ACTION_NONE;
- return 0;
-
- case ARG_VERSION:
- puts(PACKAGE_STRING);
- puts(DISTRIBUTION);
- puts(SYSTEMD_FEATURES);
- arg_action = ACTION_NONE;
- return 0;
-
- case ARG_NO_PAGER:
- arg_no_pager = true;
- break;
-
- case ARG_NO_LEGEND:
- arg_no_legend = true;
- break;
-
- case 'o':
- if (output) {
- log_error("cannot set output more than once");
- return -EINVAL;
- }
-
- output = fopen(optarg, "we");
- if (!output) {
- log_error("writing to '%s': %m", optarg);
- return -errno;
- }
-
- break;
-
- case 'F':
- if (field) {
- log_error("cannot use --field/-F more than once");
- return -EINVAL;
- }
-
- field = optarg;
- break;
-
- case '?':
- return -EINVAL;
-
- default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
- }
-
- if (optind < argc) {
- const char *cmd = argv[optind++];
- if(streq(cmd, "list"))
- arg_action = ACTION_LIST;
- else if (streq(cmd, "dump"))
- arg_action = ACTION_DUMP;
- else if (streq(cmd, "gdb"))
- arg_action = ACTION_GDB;
- else {
- log_error("Unknown action '%s'", cmd);
- return -EINVAL;
- }
- }
-
- if (field && arg_action != ACTION_LIST) {
- log_error("Option --field/-F only makes sense with list");
- return -EINVAL;
- }
-
- while (optind < argc) {
- r = add_match(matches, argv[optind]);
- if (r != 0)
- return r;
- optind++;
- }
-
- return 0;
-}
-
-static int retrieve(const void *data,
- size_t len,
- const char *name,
- const char **var) {
-
- size_t ident;
-
- ident = strlen(name) + 1; /* name + "=" */
-
- if (len < ident)
- return 0;
-
- if (memcmp(data, name, ident - 1) != 0)
- return 0;
-
- if (((const char*) data)[ident - 1] != '=')
- return 0;
-
- *var = strndup((const char*)data + ident, len - ident);
- if (!var)
- return log_oom();
-
- return 0;
-}
-
-static void print_field(FILE* file, sd_journal *j) {
- const char _cleanup_free_ *value = NULL;
- const void *d;
- size_t l;
-
- assert(field);
-
- SD_JOURNAL_FOREACH_DATA(j, d, l)
- retrieve(d, l, field, &value);
- if (value)
- fprintf(file, "%s\n", value);
-}
-
-static int print_entry(FILE* file, sd_journal *j, int had_legend) {
- const char _cleanup_free_
- *pid = NULL, *uid = NULL, *gid = NULL,
- *sgnl = NULL, *exe = NULL;
- const void *d;
- size_t l;
- usec_t t;
- char buf[FORMAT_TIMESTAMP_MAX];
- int r;
-
- SD_JOURNAL_FOREACH_DATA(j, d, l) {
- retrieve(d, l, "COREDUMP_PID", &pid);
- retrieve(d, l, "COREDUMP_PID", &pid);
- retrieve(d, l, "COREDUMP_UID", &uid);
- retrieve(d, l, "COREDUMP_GID", &gid);
- retrieve(d, l, "COREDUMP_SIGNAL", &sgnl);
- retrieve(d, l, "COREDUMP_EXE", &exe);
- if (!exe)
- retrieve(d, l, "COREDUMP_COMM", &exe);
- if (!exe)
- retrieve(d, l, "COREDUMP_CMDLINE", &exe);
- }
-
- if (!pid && !uid && !gid && !sgnl && !exe) {
- log_warning("Empty coredump log entry");
- return -EINVAL;
- }
-
- r = sd_journal_get_realtime_usec(j, &t);
- if (r < 0) {
- log_error("Failed to get realtime timestamp: %s", strerror(-r));
- return r;
- }
-
- format_timestamp(buf, sizeof(buf), t);
-
- if (!had_legend && !arg_no_legend)
- fprintf(file, "%-*s %*s %*s %*s %*s %s\n",
- FORMAT_TIMESTAMP_MAX-1, "TIME",
- 6, "PID",
- 5, "UID",
- 5, "GID",
- 3, "SIG",
- "EXE");
-
- fprintf(file, "%*s %*s %*s %*s %*s %s\n",
- FORMAT_TIMESTAMP_MAX-1, buf,
- 6, pid,
- 5, uid,
- 5, gid,
- 3, sgnl,
- exe);
-
- return 0;
-}
-
-static int dump_list(sd_journal *j) {
- int found = 0;
-
- assert(j);
-
- SD_JOURNAL_FOREACH(j) {
- if (field)
- print_field(stdout, j);
- else
- print_entry(stdout, j, found++);
- }
-
- if (!field && !found) {
- log_notice("No coredumps found");
- return -ESRCH;
- }
-
- return 0;
-}
-
-static int focus(sd_journal *j) {
- int r;
-
- r = sd_journal_seek_tail(j);
- if (r == 0)
- r = sd_journal_previous(j);
- if (r < 0) {
- log_error("Failed to search journal: %s", strerror(-r));
- return r;
- }
- if (r == 0) {
- log_error("No match found");
- return -ESRCH;
- }
- return r;
-}
-
-static int dump_core(sd_journal* j) {
- const void *data;
- size_t len, ret;
- int r;
-
- assert(j);
-
- r = focus(j);
- if (r < 0)
- return r;
-
- print_entry(output ? stdout : stderr, j, false);
-
- if (on_tty() && !output) {
- log_error("Refusing to dump core to tty");
- return -ENOTTY;
- }
-
- r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
- if (r < 0) {
- log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
- return r;
- }
-
- assert(len >= 9);
- data = (const uint8_t*) data + 9;
- len -= 9;
-
- ret = fwrite(data, len, 1, output ? output : stdout);
- if (ret != 1) {
- log_error("dumping coredump: %m (%zu)", ret);
- return -errno;
- }
-
- r = sd_journal_previous(j);
- if (r >= 0)
- log_warning("More than one entry matches, ignoring rest.\n");
-
- return 0;
-}
-
-static int run_gdb(sd_journal *j) {
- char path[] = "/var/tmp/coredump-XXXXXX";
- const void *data;
- size_t len;
- ssize_t sz;
- pid_t pid;
- _cleanup_free_ char *exe = NULL;
- int r;
- _cleanup_close_ int fd = -1;
- siginfo_t st;
-
- assert(j);
-
- r = focus(j);
- if (r < 0)
- return r;
-
- print_entry(stdout, j, false);
-
- r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len);
- if (r < 0) {
- log_error("Failed to retrieve COREDUMP_EXE field: %s", strerror(-r));
- return r;
- }
-
- assert(len >= 13);
- data = (const uint8_t*) data + 13;
- len -= 13;
-
- exe = strndup(data, len);
- if (!exe)
- return log_oom();
-
- if (endswith(exe, " (deleted)")) {
- log_error("Binary already deleted.");
- return -ENOENT;
- }
-
- r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
- if (r < 0) {
- log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
- return r;
- }
-
- assert(len >= 9);
- data = (const uint8_t*) data + 9;
- len -= 9;
-
- fd = mkostemp(path, O_WRONLY);
- if (fd < 0) {
- log_error("Failed to create temporary file: %m");
- return -errno;
- }
-
- sz = write(fd, data, len);
- if (sz < 0) {
- log_error("Failed to write temporary file: %s", strerror(errno));
- r = -errno;
- goto finish;
- }
- if (sz != (ssize_t) len) {
- log_error("Short write to temporary file.");
- r = -EIO;
- goto finish;
- }
-
- close_nointr_nofail(fd);
- fd = -1;
-
- 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:
- unlink(path);
- return r;
-}
-
-int main(int argc, char *argv[]) {
- sd_journal *j = NULL;
- const char* match;
- Iterator it;
- int r = 0;
-
- setlocale(LC_ALL, "");
- log_parse_environment();
- log_open();
-
- matches = new_matches();
- if (!matches) {
- r = -ENOMEM;
- goto end;
- }
-
- r = parse_argv(argc, argv);
- 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("Failed to open journal: %s", strerror(-r));
- goto end;
- }
-
- 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;
- }
- }
-
- switch(arg_action) {
-
- case ACTION_LIST:
- if (!arg_no_pager)
- pager_open();
-
- 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:
- if (j)
- sd_journal_close(j);
-
- set_free_free(matches);
-
- pager_close();
-
- if (output)
- fclose(output);
-
- return r >= 0 ? r : EXIT_FAILURE;
-}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-23 06:01:25 +0000