#include <fcntl.h>
#include <errno.h>
#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/poll.h>
+#include <time.h>
+#include <getopt.h>
-#include "journal-private.h"
+#include "sd-journal.h"
+#include "log.h"
+#include "util.h"
+#include "build.h"
+#include "pager.h"
+#include "logs-show.h"
+
+static output_mode arg_output = OUTPUT_SHORT;
+
+static bool arg_follow = false;
+static bool arg_show_all = false;
+static bool arg_no_pager = false;
+static int arg_lines = -1;
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ "Send control commands to or query the login manager.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " -a --all Show all properties, including long and unprintable\n"
+ " -f --follow Follow journal\n"
+ " -n --lines=INTEGER Lines to show\n"
+ " -o --output=STRING Change output mode (short, verbose, export, json)\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_PAGER
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version" , no_argument, NULL, ARG_VERSION },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { "follow", no_argument, NULL, 'f' },
+ { "output", required_argument, NULL, 'o' },
+ { "all", no_argument, NULL, 'a' },
+ { "lines", required_argument, NULL, 'n' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c, r;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hfo:an:", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(DISTRIBUTION);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case ARG_NO_PAGER:
+ arg_no_pager = true;
+ break;
+
+ case 'f':
+ arg_follow = true;
+ break;
+
+ case 'o':
+ if (streq(optarg, "short"))
+ arg_output = OUTPUT_SHORT;
+ else if (streq(optarg, "verbose"))
+ arg_output = OUTPUT_VERBOSE;
+ else if (streq(optarg, "export"))
+ arg_output = OUTPUT_EXPORT;
+ else if (streq(optarg, "json"))
+ arg_output = OUTPUT_JSON;
+ else {
+ log_error("Unknown output '%s'.", optarg);
+ return -EINVAL;
+ }
+ break;
+
+ case 'a':
+ arg_show_all = true;
+ break;
+
+ case 'n':
+ r = safe_atoi(optarg, &arg_lines);
+ if (r < 0) {
+ log_error("Failed to parse lines '%s'", optarg);
+ return -EINVAL;
+ }
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}
int main(int argc, char *argv[]) {
- int r;
- JournalFile *f;
- Object *o = NULL;
+ int r, i, fd;
+ sd_journal *j = NULL;
+ unsigned line = 0;
log_parse_environment();
log_open();
- r = journal_file_open("/var/log/journal/system.journal", O_RDONLY, 0644, &f);
- if (r == -ENOENT)
- r = journal_file_open("/run/log/journal/system.journal", O_RDONLY, 0644, &f);
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+ r = sd_journal_open(&j, 0);
if (r < 0) {
log_error("Failed to open journal: %s", strerror(-r));
- return EXIT_FAILURE;
+ goto finish;
}
- for (;;) {
- uint64_t offset;
- uint64_t n, i;
+ for (i = optind; i < argc; i++) {
+ r = sd_journal_add_match(j, argv[i], strlen(argv[i]));
+ if (r < 0) {
+ log_error("Failed to add match: %s", strerror(-r));
+ goto finish;
+ }
+ }
+
+ fd = sd_journal_get_fd(j);
+ if (fd < 0) {
+ log_error("Failed to get wakeup fd: %s", strerror(-fd));
+ goto finish;
+ }
- r = journal_file_next_entry(f, o, &o, &offset);
+ if (arg_lines >= 0) {
+ r = sd_journal_seek_tail(j);
if (r < 0) {
- log_error("Failed to read journal: %s", strerror(-r));
+ log_error("Failed to seek to tail: %s", strerror(-r));
goto finish;
}
- if (r == 0)
- break;
+ r = sd_journal_previous_skip(j, arg_lines);
+ if (r < 0) {
+ log_error("Failed to iterate through journal: %s", strerror(-r));
+ goto finish;
+ }
+ } else {
+ r = sd_journal_seek_head(j);
+ if (r < 0) {
+ log_error("Failed to seek to head: %s", strerror(-r));
+ goto finish;
+ }
+ }
- printf("entry: %llu\n", (unsigned long long) le64toh(o->entry.seqnum));
+ if (!arg_no_pager && !arg_follow) {
+ columns();
+ pager_open();
+ }
+
+ if (arg_output == OUTPUT_JSON) {
+ fputc('[', stdout);
+ fflush(stdout);
+ }
+
+ for (;;) {
+ struct pollfd pollfd;
- n = journal_file_entry_n_items(o);
- for (i = 0; i < n; i++) {
- uint64_t p, l;
+ for (;;) {
+ r = sd_journal_next(j);
- p = le64toh(o->entry.items[i].object_offset);
- r = journal_file_move_to_object(f, p, &o);
if (r < 0) {
- log_error("Failed to move to data: %s", strerror(-r));
+ log_error("Failed to iterate through journal: %s", strerror(-r));
goto finish;
}
- if (le64toh(o->object.type) != OBJECT_DATA) {
- log_error("Invalid file");
- goto finish;
- }
+ if (r == 0)
+ break;
- l = o->object.size - offsetof(Object, data.payload);
- printf("\t[%.*s]\n", (int) l, o->data.payload);
+ line ++;
- r = journal_file_move_to_object(f, offset, &o);
- if (r < 0) {
- log_error("Failed to move back to entry: %s", strerror(-r));
+ r = output_journal(j, arg_output, line, arg_show_all);
+ if (r < 0)
goto finish;
- }
+ }
+
+ if (!arg_follow)
+ break;
+
+ zero(pollfd);
+ pollfd.fd = fd;
+ pollfd.events = POLLIN;
+
+ if (poll(&pollfd, 1, -1) < 0) {
+ if (errno == EINTR)
+ break;
+
+ log_error("poll(): %m");
+ r = -errno;
+ goto finish;
+ }
+
+ r = sd_journal_process(j);
+ if (r < 0) {
+ log_error("Failed to process: %s", strerror(-r));
+ goto finish;
}
}
+ if (arg_output == OUTPUT_JSON)
+ fputs("\n]\n", stdout);
+
finish:
- journal_file_close(f);
+ if (j)
+ sd_journal_close(j);
- return 0;
+ pager_close();
+
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff