X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fjournal%2Fjournalctl.c;h=10959423f695d377426c09f33637c8b9a595482f;hb=de2c390731e563db0ee383bfd0073fdbef643ca2;hp=4d9864729b2a9b0516bbd411955e86ff6b3adfd1;hpb=d3f2bdbfee94a4cd124b66e610f4b926b749e192;p=elogind.git
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index 4d9864729..10959423f 100644
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -6,16 +6,16 @@
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 .
***/
@@ -29,14 +29,18 @@
#include
#include
#include
+#include
#include
#include "log.h"
#include "util.h"
+#include "path-util.h"
#include "build.h"
#include "pager.h"
#include "logs-show.h"
+#include "strv.h"
+#include "journal-internal.h"
static OutputMode arg_output = OUTPUT_SHORT;
static bool arg_follow = false;
@@ -45,20 +49,32 @@ 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_print_header = false;
+static bool arg_quiet = false;
+static bool arg_local = false;
+static bool arg_this_boot = false;
+static const char *arg_directory = NULL;
+static int arg_priorities = 0xFF;
static int help(void) {
- printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ 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 properties, including long and unprintable\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"
+ " -l --local Only local entries\n"
+ " -b --this-boot Show data only from current boot\n"
+ " -D --directory=PATH Show journal files from directory\n"
+ " -p --priority=RANGE Show only messages within the specified priority range\n"
+ " --header Show journal header information\n"
" --new-id128 Generate a new 128 Bit id\n",
program_invocation_short_name);
@@ -71,7 +87,8 @@ static int parse_argv(int argc, char *argv[]) {
ARG_VERSION = 0x100,
ARG_NO_PAGER,
ARG_NO_TAIL,
- ARG_NEW_ID128
+ ARG_NEW_ID128,
+ ARG_HEADER
};
static const struct option options[] = {
@@ -84,6 +101,12 @@ static int parse_argv(int argc, char *argv[]) {
{ "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' },
+ { "this-boot", no_argument, NULL, 'b' },
+ { "directory", required_argument, NULL, 'D' },
+ { "header", no_argument, NULL, ARG_HEADER },
+ { "priority", no_argument, NULL, 'p' },
{ NULL, 0, NULL, 0 }
};
@@ -92,7 +115,7 @@ static int parse_argv(int argc, char *argv[]) {
assert(argc >= 0);
assert(argv);
- while ((c = getopt_long(argc, argv, "hfo:an:", options, NULL)) >= 0) {
+ while ((c = getopt_long(argc, argv, "hfo:an:qlbD:p:", options, NULL)) >= 0) {
switch (c) {
@@ -143,6 +166,76 @@ static int parse_argv(int argc, char *argv[]) {
arg_new_id128 = true;
break;
+ case 'q':
+ arg_quiet = true;
+ break;
+
+ case 'l':
+ arg_local = true;
+ break;
+
+ case 'b':
+ arg_this_boot = true;
+ break;
+
+ case 'D':
+ arg_directory = optarg;
+ break;
+
+ case ARG_HEADER:
+ arg_print_header = true;
+ break;
+
+ case 'p': {
+ const char *dots;
+
+ dots = strstr(optarg, "..");
+ if (dots) {
+ char *a;
+ int from, to, i;
+
+ /* a range */
+ a = strndup(optarg, dots - optarg);
+ if (!a)
+ return log_oom();
+
+ from = log_level_from_string(a);
+ to = log_level_from_string(dots + 2);
+ free(a);
+
+ if (from < 0 || to < 0) {
+ log_error("Failed to parse log level range %s", optarg);
+ return -EINVAL;
+ }
+
+ arg_priorities = 0;
+
+ if (from < to) {
+ for (i = from; i <= to; i++)
+ arg_priorities |= 1 << i;
+ } else {
+ for (i = to; i <= from; i++)
+ arg_priorities |= 1 << i;
+ }
+
+ } else {
+ int p, i;
+
+ p = log_level_from_string(optarg);
+ if (p < 0) {
+ log_error("Unknown log level %s", optarg);
+ return -EINVAL;
+ }
+
+ arg_priorities = 0;
+
+ for (i = 0; i <= p; i++)
+ arg_priorities |= 1 << i;
+ }
+
+ break;
+ }
+
case '?':
return -EINVAL;
@@ -152,12 +245,27 @@ static int parse_argv(int argc, char *argv[]) {
}
}
- if (arg_follow && !arg_no_tail)
+ if (arg_follow && !arg_no_tail && arg_lines < 0)
arg_lines = 10;
return 1;
}
+static bool on_tty(void) {
+ static int t = -1;
+
+ /* Note that this is invoked relatively early, before we start
+ * the pager. That means the value we return reflects whether
+ * we originally were started on a tty, not if we currently
+ * are. But this is intended, since we want colour and so on
+ * when run in our own pager. */
+
+ if (_unlikely_(t < 0))
+ t = isatty(STDOUT_FILENO) > 0;
+
+ return t;
+}
+
static int generate_new_id128(void) {
sd_id128_t id;
int r;
@@ -186,11 +294,119 @@ static int generate_new_id128(void) {
return 0;
}
+static int add_matches(sd_journal *j, char **args) {
+ char **i;
+ int r;
+
+ assert(j);
+
+ STRV_FOREACH(i, args) {
+
+ if (streq(*i, "+"))
+ r = sd_journal_add_disjunction(j);
+ else if (path_is_absolute(*i)) {
+ char *p;
+ const char *path;
+ struct stat st;
+
+ p = canonicalize_file_name(*i);
+ path = p ? p : *i;
+
+ if (stat(path, &st) < 0) {
+ free(p);
+ log_error("Couldn't stat file: %m");
+ return -errno;
+ }
+
+ if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
+ char *t;
+
+ t = strappend("_EXE=", path);
+ if (!t) {
+ free(p);
+ return log_oom();
+ }
+
+ r = sd_journal_add_match(j, t, 0);
+ free(t);
+ } else {
+ free(p);
+ log_error("File is not a regular file or is not executable: %s", *i);
+ return -EINVAL;
+ }
+
+ free(p);
+ } else
+ r = sd_journal_add_match(j, *i, 0);
+
+ if (r < 0) {
+ log_error("Failed to add match '%s': %s", *i, strerror(-r));
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int add_this_boot(sd_journal *j) {
+ char match[9+32+1] = "_BOOT_ID=";
+ sd_id128_t boot_id;
+ int r;
+
+ assert(j);
+
+ if (!arg_this_boot)
+ return 0;
+
+ r = sd_id128_get_boot(&boot_id);
+ if (r < 0) {
+ log_error("Failed to get boot id: %s", strerror(-r));
+ return r;
+ }
+
+ sd_id128_to_string(boot_id, match + 9);
+ r = sd_journal_add_match(j, match, strlen(match));
+ if (r < 0) {
+ log_error("Failed to add match: %s", strerror(-r));
+ return r;
+ }
+
+ return 0;
+}
+
+static int add_priorities(sd_journal *j) {
+ char match[] = "PRIORITY=0";
+ int i, r;
+
+ assert(j);
+
+ if (arg_priorities == 0xFF)
+ return 0;
+
+ for (i = LOG_EMERG; i <= LOG_DEBUG; i++)
+ if (arg_priorities & (1 << i)) {
+ match[sizeof(match)-2] = '0' + i;
+
+ log_info("adding match %s", match);
+
+ r = sd_journal_add_match(j, match, strlen(match));
+ if (r < 0) {
+ log_error("Failed to add match: %s", strerror(-r));
+ return r;
+ }
+ }
+
+ return 0;
+}
+
int main(int argc, char *argv[]) {
- int r, i, fd;
+ int r;
sd_journal *j = NULL;
unsigned line = 0;
bool need_seek = false;
+ sd_id128_t previous_boot_id;
+ bool previous_boot_id_valid = false;
+ bool have_pager;
log_parse_environment();
log_open();
@@ -204,24 +420,57 @@ int main(int argc, char *argv[]) {
goto finish;
}
- r = sd_journal_open(&j, 0);
+#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
+
+ if (arg_directory)
+ r = sd_journal_open_directory(&j, arg_directory, 0);
+ else
+ r = sd_journal_open(&j, arg_local ? SD_JOURNAL_LOCAL_ONLY : 0);
+
if (r < 0) {
log_error("Failed to open journal: %s", strerror(-r));
goto finish;
}
- for (i = optind; i < argc; i++) {
- r = sd_journal_add_match(j, argv[i], strlen(argv[i]));
+ if (arg_print_header) {
+ journal_print_header(j);
+ r = 0;
+ goto finish;
+ }
+
+ r = add_this_boot(j);
+ if (r < 0)
+ goto finish;
+
+ r = add_matches(j, argv + optind);
+ if (r < 0)
+ goto finish;
+
+ r = add_priorities(j);
+ if (r < 0)
+ goto finish;
+
+ if (!arg_quiet) {
+ usec_t start, end;
+ char start_buf[FORMAT_TIMESTAMP_MAX], end_buf[FORMAT_TIMESTAMP_MAX];
+
+ r = sd_journal_get_cutoff_realtime_usec(j, &start, &end);
if (r < 0) {
- log_error("Failed to add match: %s", strerror(-r));
+ log_error("Failed to get cutoff: %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;
+ if (r > 0) {
+ if (arg_follow)
+ printf("Logs begin at %s.\n", format_timestamp(start_buf, sizeof(start_buf), start));
+ else
+ printf("Logs begin at %s, end at %s.\n",
+ format_timestamp(start_buf, sizeof(start_buf), start),
+ format_timestamp(end_buf, sizeof(end_buf), end));
+ }
}
if (arg_lines >= 0) {
@@ -247,10 +496,8 @@ int main(int argc, char *argv[]) {
goto finish;
}
- if (!arg_no_pager && !arg_follow) {
- columns();
- pager_open();
- }
+ on_tty();
+ have_pager = !arg_no_pager && !arg_follow && pager_open();
if (arg_output == OUTPUT_JSON) {
fputc('[', stdout);
@@ -259,6 +506,12 @@ int main(int argc, char *argv[]) {
for (;;) {
for (;;) {
+ sd_id128_t boot_id;
+ int flags =
+ arg_show_all * OUTPUT_SHOW_ALL |
+ have_pager * OUTPUT_FULL_WIDTH |
+ on_tty() * OUTPUT_COLOR;
+
if (need_seek) {
r = sd_journal_next(j);
if (r < 0) {
@@ -270,9 +523,19 @@ int main(int argc, char *argv[]) {
if (r == 0)
break;
+ r = sd_journal_get_monotonic_usec(j, NULL, &boot_id);
+ if (r >= 0) {
+ if (previous_boot_id_valid &&
+ !sd_id128_equal(boot_id, previous_boot_id))
+ printf(ANSI_HIGHLIGHT_ON "----- Reboot -----" ANSI_HIGHLIGHT_OFF "\n");
+
+ previous_boot_id = boot_id;
+ previous_boot_id_valid = true;
+ }
+
line ++;
- r = output_journal(j, arg_output, line, arg_show_all);
+ r = output_journal(j, arg_output, line, 0, flags);
if (r < 0)
goto finish;
@@ -282,15 +545,9 @@ int main(int argc, char *argv[]) {
if (!arg_follow)
break;
- r = fd_wait_for_event(fd, POLLIN);
- if (r < 0) {
- log_error("Couldn't wait for event: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_journal_process(j);
+ r = sd_journal_wait(j, (uint64_t) -1);
if (r < 0) {
- log_error("Failed to process: %s", strerror(-r));
+ log_error("Couldn't wait for log event: %s", strerror(-r));
goto finish;
}
}