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-rw-r--r--src/journal/journalctl.c48
1 files changed, 43 insertions, 5 deletions
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index 0498f294ae..665b325a94 100644
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -51,6 +51,7 @@
#include "journal-authenticate.h"
#include "journal-qrcode.h"
#include "fsprg.h"
+#include "unit-name.h"
#define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE)
@@ -72,6 +73,7 @@ static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC;
#endif
static usec_t arg_since, arg_until;
static bool arg_since_set = false, arg_until_set = false;
+static const char *arg_unit = NULL;
static enum {
ACTION_SHOW,
@@ -88,21 +90,22 @@ static int help(void) {
"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"
" -c --cursor=CURSOR Start showing entries from specified cursor\n"
" --since=DATE Start showing entries newer or of the specified date\n"
" --until=DATE Stop showing entries older or of the specified date\n"
+ " -b --this-boot Show data only from current boot\n"
+ " -u --unit=UNIT Show data only from the specified unit\n"
+ " -p --priority=RANGE Show only messages within the specified priority range\n\n"
" -f --follow Follow journal\n"
" -n --lines[=INTEGER] Number of 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, json-pretty, json-sse, cat)\n"
+ " -a --all Show all fields, including long and unprintable\n"
" -q --quiet Don't show privilege warning\n"
+ " --no-pager Do not pipe output into a pager\n"
" -m --merge Show entries from all available journals\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\n"
"Commands:\n"
" --new-id128 Generate a new 128 Bit ID\n"
" --header Show journal header information\n"
@@ -159,6 +162,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "cursor", required_argument, NULL, 'c' },
{ "since", required_argument, NULL, ARG_SINCE },
{ "until", required_argument, NULL, ARG_UNTIL },
+ { "unit", required_argument, NULL, 'u' },
{ NULL, 0, NULL, 0 }
};
@@ -167,7 +171,7 @@ static int parse_argv(int argc, char *argv[]) {
assert(argc >= 0);
assert(argv);
- while ((c = getopt_long(argc, argv, "hfo:an::qmbD:p:c:", options, NULL)) >= 0) {
+ while ((c = getopt_long(argc, argv, "hfo:an::qmbD:p:c:u:", options, NULL)) >= 0) {
switch (c) {
@@ -357,6 +361,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_until_set = true;
break;
+ case 'u':
+ arg_unit = optarg;
+ break;
+
case '?':
return -EINVAL;
@@ -506,6 +514,32 @@ static int add_this_boot(sd_journal *j) {
return 0;
}
+static int add_unit(sd_journal *j) {
+ _cleanup_free_ char *m = NULL, *u = NULL;
+ int r;
+
+ assert(j);
+
+ if (isempty(arg_unit))
+ return 0;
+
+ u = unit_name_mangle(arg_unit);
+ if (!u)
+ return log_oom();
+
+ m = strappend("_SYSTEMD_UNIT=", u);
+ if (!m)
+ return log_oom();
+
+ r = sd_journal_add_match(j, m, strlen(m));
+ 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;
@@ -851,6 +885,10 @@ int main(int argc, char *argv[]) {
if (r < 0)
goto finish;
+ r = add_unit(j);
+ if (r < 0)
+ goto finish;
+
r = add_matches(j, argv + optind);
if (r < 0)
goto finish;