journalctl,systemctl: fix tiny memleak

[elogind.git] / src / shared / logs-show.c

diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c
index 89f67f52c044643e799c9d9ea7ca4b898c703b44..ea4746879bf3d43b925a4832b115d91e4508c91b 100644 (file)
--- a/src/shared/logs-show.c
+++ b/src/shared/logs-show.c
@@ -357,6 +357,8 @@ static int output_verbose(
         JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
                 const char *c;
                 int fieldlen;
+                const char *on = "", *off = "";
+
                 c = memchr(data, '=', length);
                 if (!c) {
                         log_error("Invalid field.");
@@ -364,16 +366,25 @@ static int output_verbose(
                 }
                 fieldlen = c - (const char*) data;
 
-                if ((flags & OUTPUT_SHOW_ALL) || (length < PRINT_THRESHOLD && utf8_is_printable(data, length))) {
-                        fprintf(f, "    %.*s=", fieldlen, (const char*)data);
+                if (flags & OUTPUT_COLOR && startswith(data, "MESSAGE=")) {
+                        on = ANSI_HIGHLIGHT_ON;
+                        off = ANSI_HIGHLIGHT_OFF;
+                }
+
+                if (flags & OUTPUT_SHOW_ALL ||
+                    (((length < PRINT_THRESHOLD) || flags & OUTPUT_FULL_WIDTH) && utf8_is_printable(data, length))) {
+                        fprintf(f, "    %s%.*s=", on, fieldlen, (const char*)data);
                         print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1);
+                        fputs(off, f);
                 } else {
                         char bytes[FORMAT_BYTES_MAX];
 
-                        fprintf(f, "    %.*s=[%s blob data]\n",
+                        fprintf(f, "    %s%.*s=[%s blob data]%s\n",
+                                on,
                                 (int) (c - (const char*) data),
                                 (const char*) data,
-                                format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1));
+                                format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1),
+                                off);
                 }
         }
 
@@ -911,15 +922,15 @@ finish:
 
 int add_matches_for_unit(sd_journal *j, const char *unit) {
         int r;
-        _cleanup_free_ char *m1 = NULL, *m2 = NULL, *m3 = NULL;
+        char *m1, *m2, *m3, *m4;
 
         assert(j);
         assert(unit);
 
-        if (asprintf(&m1, "_SYSTEMD_UNIT=%s", unit) < 0 ||
-            asprintf(&m2, "COREDUMP_UNIT=%s", unit) < 0 ||
-            asprintf(&m3, "UNIT=%s", unit) < 0)
-                return -ENOMEM;
+        m1 = strappenda("_SYSTEMD_UNIT=", unit);
+        m2 = strappenda("COREDUMP_UNIT=", unit);
+        m3 = strappenda("UNIT=", unit);
+        m4 = strappenda("OBJECT_SYSTEMD_UNIT=", unit);
 
         (void)(
             /* Look for messages from the service itself */
@@ -927,45 +938,59 @@ int add_matches_for_unit(sd_journal *j, const char *unit) {
 
             /* Look for coredumps of the service */
             (r = sd_journal_add_disjunction(j)) ||
-            (r = sd_journal_add_match(j,
-                        "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1", 0)) ||
+            (r = sd_journal_add_match(j, "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1", 0)) ||
+            (r = sd_journal_add_match(j, "_UID=0", 0)) ||
             (r = sd_journal_add_match(j, m2, 0)) ||
 
              /* Look for messages from PID 1 about this service */
             (r = sd_journal_add_disjunction(j)) ||
             (r = sd_journal_add_match(j, "_PID=1", 0)) ||
-            (r = sd_journal_add_match(j, m3, 0))
+            (r = sd_journal_add_match(j, m3, 0)) ||
+
+            /* Look for messages from authorized daemons about this service */
+            (r = sd_journal_add_disjunction(j)) ||
+            (r = sd_journal_add_match(j, "_UID=0", 0)) ||
+            (r = sd_journal_add_match(j, m4, 0))
         );
+
         return r;
 }
 
 int add_matches_for_user_unit(sd_journal *j, const char *unit, uid_t uid) {
         int r;
-        _cleanup_free_ char *m1 = NULL, *m2 = NULL, *m3 = NULL, *m4 = NULL;
+        char *m1, *m2, *m3, *m4;
+        char muid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)];
 
         assert(j);
         assert(unit);
 
-        if (asprintf(&m1, "_SYSTEMD_USER_UNIT=%s", unit) < 0 ||
-            asprintf(&m2, "USER_UNIT=%s", unit) < 0 ||
-            asprintf(&m3, "COREDUMP_USER_UNIT=%s", unit) < 0 ||
-            asprintf(&m4, "_UID=%d", uid) < 0)
-                return -ENOMEM;
+        m1 = strappenda("_SYSTEMD_USER_UNIT=", unit);
+        m2 = strappenda("USER_UNIT=", unit);
+        m3 = strappenda("COREDUMP_USER_UNIT=", unit);
+        m4 = strappenda("OBJECT_SYSTEMD_USER_UNIT=", unit);
+        sprintf(muid, "_UID=%lu", (unsigned long) uid);
 
         (void) (
                 /* Look for messages from the user service itself */
                 (r = sd_journal_add_match(j, m1, 0)) ||
-                (r = sd_journal_add_match(j, m4, 0)) ||
+                (r = sd_journal_add_match(j, muid, 0)) ||
 
                 /* Look for messages from systemd about this service */
                 (r = sd_journal_add_disjunction(j)) ||
                 (r = sd_journal_add_match(j, m2, 0)) ||
-                (r = sd_journal_add_match(j, m4, 0)) ||
+                (r = sd_journal_add_match(j, muid, 0)) ||
 
                 /* Look for coredumps of the service */
                 (r = sd_journal_add_disjunction(j)) ||
                 (r = sd_journal_add_match(j, m3, 0)) ||
-                (r = sd_journal_add_match(j, m4, 0))
+                (r = sd_journal_add_match(j, muid, 0)) ||
+                (r = sd_journal_add_match(j, "_UID=0", 0)) ||
+
+                /* Look for messages from authorized daemons about this service */
+                (r = sd_journal_add_disjunction(j)) ||
+                (r = sd_journal_add_match(j, m4, 0)) ||
+                (r = sd_journal_add_match(j, muid, 0)) ||
+                (r = sd_journal_add_match(j, "_UID=0", 0))
         );
         return r;
 }
@@ -1034,7 +1059,12 @@ int show_journal_by_unit(
         if (r < 0)
                 return r;
 
-        log_debug("Journal filter: %s", journal_make_match_string(j));
+        if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) {
+                _cleanup_free_ char *filter;
+
+                filter = journal_make_match_string(j);
+                log_debug("Journal filter: %s", filter);
+        }
 
         r = show_journal(f, j, mode, n_columns, not_before, how_many, flags);
         if (r < 0)