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journal: Don't use loginuid if it's not valid

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Code above this attempted to load loginuid, if this failed for
whatever reason, we'd still end up using that value (0) in place of
realuid.  Fix this by setting a bool when we know the loginuid is
valid.

This fixes journal messages showing up in per-user journals in
gnome-ostree (not configured with loginuid, but I'll shortly fix
that).
This commit is contained in:
Colin Walters 2013-02-12 12:24:30 -05:00 committed by Lennart Poettering
parent b43d1d01ea
commit 759c945a43
1 changed files with 13 additions and 5 deletions
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18
src/journal/journald-server.c
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@ -515,6 +515,8 @@ static void dispatch_message_real(
int r;
char *t;
uid_t loginuid = 0, realuid = 0;
uid_t journal_uid;
bool loginuid_valid = false;
assert(s);
assert(iovec);
@ -571,9 +573,11 @@ static void dispatch_message_real(
IOVEC_SET_STRING(iovec[n++], audit_session);
r = audit_loginuid_from_pid(ucred->pid, &loginuid);
if (r >= 0)
if (r >= 0) {
loginuid_valid = true;
if (asprintf(&audit_loginuid, "_AUDIT_LOGINUID=%lu", (unsigned long) loginuid) >= 0)
IOVEC_SET_STRING(iovec[n++], audit_loginuid);
}
t = shortened_cgroup_path(ucred->pid);
if (t) {
@ -666,10 +670,14 @@ static void dispatch_message_real(
assert(n <= m);
write_to_journal(s,
s->split_mode == SPLIT_NONE ? 0 :
(s->split_mode == SPLIT_UID ? realuid :
(realuid == 0 ? 0 : loginuid)), iovec, n);
if (s->split_mode == SPLIT_NONE)
journal_uid = 0;
else if (s->split_mode == SPLIT_UID || realuid == 0 || !loginuid_valid)
journal_uid = realuid;
else
journal_uid = loginuid;
write_to_journal(s, journal_uid, iovec, n);
}
void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) {