man: document systemd-journalctl(1)

[elogind.git] / src / journal / journalctl.c

diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index 52db7a9365185adfd94475f8342c444f1bd0c533..f90b2ddabe01ee7b3cdb0b590bee68e4d690af76 100644 (file)
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -45,6 +45,7 @@ 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 int help(void) {
 
@@ -53,12 +54,13 @@ static int help(void) {
                "  -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"
                "     --new-id128      Generate a new 128 Bit id\n",
                program_invocation_short_name);
 
@@ -84,6 +86,7 @@ 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'           },
                 { NULL,        0,                 NULL, 0             }
         };
 
@@ -92,7 +95,7 @@ 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:q", options, NULL)) >= 0) {
 
                 switch (c) {
 
@@ -143,6 +146,10 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_new_id128 = true;
                         break;
 
+                case 'q':
+                        arg_quiet = true;
+                        break;
+
                 case '?':
                         return -EINVAL;
 
@@ -204,6 +211,11 @@ int main(int argc, char *argv[]) {
                 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, 0);
         if (r < 0) {
                 log_error("Failed to open journal: %s", strerror(-r));
@@ -272,7 +284,7 @@ int main(int argc, char *argv[]) {
 
                         line ++;
 
-                        r = output_journal(j, arg_output, line, arg_show_all);
+                        r = output_journal(j, arg_output, line, 0, arg_show_all);
                         if (r < 0)
                                 goto finish;
 
@@ -282,7 +294,7 @@ int main(int argc, char *argv[]) {
                 if (!arg_follow)
                         break;
 
-                r = fd_wait_for_event(fd, POLLIN);
+                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;