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journalctl: add --system/--user flags

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--user basically gives messages from your own systemd --user services.
--system basically gives messages from PID 1, kernel, and --system
services. Those two options are not exahustive, because a priviledged
user might be able to see messages from other users, and they will not
be shown with either or both of those flags.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2013-06-10 10:10:06 -04:00
parent a688baa8b7
commit 3f3a438f58
4 changed files with 35 additions and 3 deletions
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src/journal/journalctl.c
+18 -3
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@@ -86,6 +86,7 @@ static char **arg_user_units = NULL;
static const char *arg_field = NULL;
static bool arg_catalog = false;
static bool arg_reverse = false;
static int arg_journal_type = 0;
static const char *arg_root = NULL;
static enum {
@@ -105,6 +106,8 @@ static int help(void) {
printf("%s [OPTIONS...] [MATCHES...]\n\n"
"Query the journal.\n\n"
"Flags:\n"
" --system Show only the system journal\n"
" --user Show only the user journal for current user\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"
" -c --cursor=CURSOR Start showing entries from specified cursor\n"
@@ -158,6 +161,8 @@ static int parse_argv(int argc, char *argv[]) {
ARG_NO_PAGER,
ARG_NO_TAIL,
ARG_NEW_ID128,
ARG_USER,
ARG_SYSTEM,
ARG_ROOT,
ARG_HEADER,
ARG_FULL,
@@ -171,7 +176,7 @@ static int parse_argv(int argc, char *argv[]) {
ARG_USER_UNIT,
ARG_LIST_CATALOG,
ARG_DUMP_CATALOG,
ARG_UPDATE_CATALOG
ARG_UPDATE_CATALOG,
};
static const struct option options[] = {
@@ -190,6 +195,8 @@ static int parse_argv(int argc, char *argv[]) {
{ "merge", no_argument, NULL, 'm' },
{ "this-boot", no_argument, NULL, 'b' },
{ "dmesg", no_argument, NULL, 'k' },
{ "system", no_argument, NULL, ARG_SYSTEM },
{ "user", no_argument, NULL, ARG_USER },
{ "directory", required_argument, NULL, 'D' },
{ "root", required_argument, NULL, ARG_ROOT },
{ "header", no_argument, NULL, ARG_HEADER },
@@ -324,6 +331,14 @@ static int parse_argv(int argc, char *argv[]) {
arg_this_boot = arg_dmesg = true;
break;
case ARG_SYSTEM:
arg_journal_type |= SD_JOURNAL_SYSTEM;
break;
case ARG_USER:
arg_journal_type |= SD_JOURNAL_CURRENT_USER;
break;
case 'D':
arg_directory = optarg;
break;
@@ -1094,9 +1109,9 @@ int main(int argc, char *argv[]) {
}
if (arg_directory)
r = sd_journal_open_directory(&j, arg_directory, 0);
r = sd_journal_open_directory(&j, arg_directory, arg_journal_type);
else
r = sd_journal_open(&j, arg_merge ? 0 : SD_JOURNAL_LOCAL_ONLY);
r = sd_journal_open(&j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
if (r < 0) {
log_error("Failed to open journal: %s", strerror(-r));
return EXIT_FAILURE;