X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fjournal%2Fjournalctl.c;h=9d4403267eb8aa22b6b7c113783accad468bf6fc;hp=ac376eaf4f7971f9b494a1b0196336e0caf6acfc;hb=e51240886f54e0128b1711c7dd0454b23e3f7d5e;hpb=250d54b5bee6a46fe1c1626211e3a7e238eda628
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index ac376eaf4..9d4403267 100644
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -6,120 +6,360 @@
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
#include
#include
#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
-#include "journal-file.h"
+#include
-static int system_journal_open(JournalFile **f) {
- int r;
- char *fn;
- sd_id128_t machine;
- char ids[33];
+#include "log.h"
+#include "util.h"
+#include "path-util.h"
+#include "build.h"
+#include "pager.h"
+#include "logs-show.h"
- assert(f);
+static OutputMode 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 bool arg_no_tail = false;
+static bool arg_new_id128 = false;
+static bool arg_quiet = false;
+static bool arg_local = false;
- r = sd_id128_get_machine(&machine);
- if (r < 0)
- return r;
+static int help(void) {
- fn = join("/var/log/journal/", sd_id128_to_string(machine, ids), "/system.journal", NULL);
- if (!fn)
- return -ENOMEM;
+ printf("%s [OPTIONS...] [MATCH]\n\n"
+ "Send control commands to or query the journal.\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 fields, including long and unprintable\n"
+ " -f --follow Follow journal\n"
+ " -n --lines=INTEGER Journal entries to show\n"
+ " --no-tail Show all lines, even in follow mode\n"
+ " -o --output=STRING Change journal output mode (short, short-monotonic,\n"
+ " verbose, export, json, cat)\n"
+ " -q --quiet Don't show privilege warning\n"
+ " --new-id128 Generate a new 128 Bit id\n"
+ " -l --local Only local entries\n",
+ program_invocation_short_name);
- r = journal_file_open(fn, O_RDONLY, 0640, f);
- free(fn);
+ return 0;
+}
- if (r >= 0)
- return r;
+static int parse_argv(int argc, char *argv[]) {
- if (r < 0 && r != -ENOENT) {
- log_error("Failed to open system journal: %s", strerror(-r));
- return r;
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_PAGER,
+ ARG_NO_TAIL,
+ ARG_NEW_ID128
+ };
+
+ 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' },
+ { "no-tail", no_argument, NULL, ARG_NO_TAIL },
+ { "new-id128", no_argument, NULL, ARG_NEW_ID128 },
+ { "quiet", no_argument, NULL, 'q' },
+ { "local", no_argument, NULL, 'l' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c, r;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hfo:an:ql", 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':
+ arg_output = output_mode_from_string(optarg);
+ if (arg_output < 0) {
+ 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 || arg_lines < 0) {
+ log_error("Failed to parse lines '%s'", optarg);
+ return -EINVAL;
+ }
+ break;
+
+ case ARG_NO_TAIL:
+ arg_no_tail = true;
+ break;
+
+ case ARG_NEW_ID128:
+ arg_new_id128 = true;
+ break;
+
+ case 'q':
+ arg_quiet = true;
+ break;
+
+ case 'l':
+ arg_local = true;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
}
- fn = join("/run/log/journal/", ids, "/system.journal", NULL);
- if (!fn)
- return -ENOMEM;
+ if (arg_follow && !arg_no_tail && arg_lines < 0)
+ arg_lines = 10;
+
+ return 1;
+}
- r = journal_file_open(fn, O_RDONLY, 0640, f);
- free(fn);
+static int generate_new_id128(void) {
+ sd_id128_t id;
+ int r;
+ unsigned i;
+ r = sd_id128_randomize(&id);
if (r < 0) {
- log_error("Failed to open system journal: %s", strerror(-r));
+ log_error("Failed to generate ID: %s", strerror(-r));
return r;
}
- return r;
+ printf("As string:\n"
+ SD_ID128_FORMAT_STR "\n\n"
+ "As UUID:\n"
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
+ "As macro:\n"
+ "#define MESSAGE_XYZ SD_ID128_MAKE(",
+ SD_ID128_FORMAT_VAL(id),
+ SD_ID128_FORMAT_VAL(id));
+
+ for (i = 0; i < 16; i++)
+ printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
+
+ fputs(")\n", stdout);
+
+ return 0;
}
int main(int argc, char *argv[]) {
- int r;
- JournalFile *f;
- Object *o = NULL;
+ int r, i, fd;
+ sd_journal *j = NULL;
+ unsigned line = 0;
+ bool need_seek = false;
+ struct stat st;
log_parse_environment();
log_open();
- r = system_journal_open(&f);
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ if (arg_new_id128) {
+ r = generate_new_id128();
+ goto finish;
+ }
+
+#ifdef HAVE_ACL
+ if (!arg_quiet && geteuid() != 0 && in_group("adm") <= 0)
+ log_warning("Showing user generated messages only. Users in the group 'adm' can see all messages. Pass -q to turn this message off.");
+#endif
+
+ r = sd_journal_open(&j, arg_local ? SD_JOURNAL_LOCAL_ONLY : 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++) {
+ if (path_is_absolute(argv[i])) {
+ char *p = NULL;
+ const char *path;
+
+ p = canonicalize_file_name(argv[i]);
+ path = p ? p : argv[i];
+
+ if (stat(path, &st) < 0) {
+ free(p);
+ log_error("Couldn't stat file: %m");
+ r = -errno;
+ goto finish;
+ }
+
+ if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
+ char *t;
+
+ t = strappend("_EXE=", path);
+ if (!t) {
+ free(p);
+ log_error("Out of memory");
+ goto finish;
+ }
+
+ r = sd_journal_add_match(j, t, strlen(t));
+ free(t);
+ } else {
+ free(p);
+ log_error("File is not a regular file or is not executable: %s", argv[i]);
+ goto finish;
+ }
+
+ free(p);
+ } else
+ r = sd_journal_add_match(j, argv[i], strlen(argv[i]));
- r = journal_file_next_entry(f, o, &o, &offset);
if (r < 0) {
- log_error("Failed to read journal: %s", strerror(-r));
+ log_error("Failed to add match: %s", strerror(-r));
goto finish;
}
+ }
- if (r == 0)
- break;
+ fd = sd_journal_get_fd(j);
+ if (fd < 0) {
+ log_error("Failed to get wakeup fd: %s", strerror(-fd));
+ goto finish;
+ }
+
+ if (arg_lines >= 0) {
+ r = sd_journal_seek_tail(j);
+ if (r < 0) {
+ log_error("Failed to seek to tail: %s", strerror(-r));
+ goto finish;
+ }
- printf("entry: %llu\n", (unsigned long long) le64toh(o->entry.seqnum));
+ r = sd_journal_previous_skip(j, arg_lines);
+ } else {
+ r = sd_journal_seek_head(j);
+ if (r < 0) {
+ log_error("Failed to seek to head: %s", strerror(-r));
+ goto finish;
+ }
- n = journal_file_entry_n_items(o);
- for (i = 0; i < n; i++) {
- uint64_t p, l;
+ r = sd_journal_next(j);
+ }
- p = le64toh(o->entry.items[i].object_offset);
- r = journal_file_move_to_object(f, p, OBJECT_DATA, &o);
- if (r < 0) {
- log_error("Failed to move to data: %s", strerror(-r));
- goto finish;
+ if (r < 0) {
+ log_error("Failed to iterate through journal: %s", strerror(-r));
+ goto finish;
+ }
+
+ if (!arg_no_pager && !arg_follow) {
+ columns();
+ pager_open();
+ }
+
+ if (arg_output == OUTPUT_JSON) {
+ fputc('[', stdout);
+ fflush(stdout);
+ }
+
+ for (;;) {
+ for (;;) {
+ if (need_seek) {
+ r = sd_journal_next(j);
+ if (r < 0) {
+ log_error("Failed to iterate through journal: %s", strerror(-r));
+ goto finish;
+ }
}
- l = o->object.size - offsetof(Object, data.payload);
- printf("\t[%.*s]\n", (int) l, o->data.payload);
+ if (r == 0)
+ break;
+
+ line ++;
- r = journal_file_move_to_object(f, offset, OBJECT_ENTRY, &o);
- if (r < 0) {
- log_error("Failed to move back to entry: %s", strerror(-r));
+ r = output_journal(j, arg_output, line, 0, arg_show_all);
+ if (r < 0)
goto finish;
- }
+
+ need_seek = true;
+ }
+
+ if (!arg_follow)
+ break;
+
+ r = fd_wait_for_event(fd, POLLIN, (usec_t) -1);
+ if (r < 0) {
+ log_error("Couldn't wait for event: %s", strerror(-r));
+ 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;
}