journalctl: show coredumps again when --unit= is specified

This effectively reverts fdcd37df3b97abc381c7b7a29b81cc013c7a3230.

After 888e378da2dbf4520e68a9d7e59712a3cd5a830f, coredumps for system
services are stored by systemd-coredump user. Henve, _UID=0 does not
match anything anymore.

Before:
```
$ build/journalctl -u systemd-networkd.service -p2 -n1
-- No entries --
```

After:
```
$ build/journalctl -u systemd-networkd.service -p2 -n1
Dec 06 05:39:55 H systemd-coredump[4187]: [🡕] Process 4145 (systemd-network) of user 192 dumped core.
(snip)
```

diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c
index 0b28ce411734197308b0adc81d60763fc88ff678..95af913a5ad3a095629f6f126c0565ee4f97216d 100644 (file)
--- a/src/shared/logs-show.c
+++ b/src/shared/logs-show.c
@@ -1653,7 +1653,6 @@ int add_matches_for_unit_full(sd_journal *j, bool all, const char *unit) {
                         /* Look for coredumps of the service */
                         (r = sd_journal_add_disjunction(j)) ||
                         (r = sd_journal_add_match(j, "MESSAGE_ID=" SD_MESSAGE_COREDUMP_STR, SIZE_MAX)) ||
-                        (r = sd_journal_add_match(j, "_UID=0", SIZE_MAX)) ||
                         (r = journal_add_match_pair(j, "COREDUMP_UNIT", unit))
                 );
 
@@ -1696,8 +1695,7 @@ int add_matches_for_user_unit_full(sd_journal *j, bool all, const char *unit) {
                         /* Look for coredumps of the service */
                         (r = sd_journal_add_disjunction(j)) ||
                         (r = journal_add_match_pair(j, "COREDUMP_USER_UNIT", unit)) ||
-                        (r = journal_add_matchf(j, "_UID="UID_FMT, uid)) ||
-                        (r = sd_journal_add_match(j, "_UID=0", SIZE_MAX))
+                        (r = journal_add_matchf(j, "_UID="UID_FMT, uid))
                 );
 
         if (r == 0 && all && endswith(unit, ".slice"))