diff options
Diffstat (limited to 'src/journal/journalctl.c')
| -rw-r--r-- | src/journal/journalctl.c | 48 |
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; |