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pam_systemd: add debug messages

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Let's actually print out how we're called.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2026-09-22 18:46:41 +02:00
committed by Luca Boccassi
parent a415aeb1d2
commit 06997170f3
1 changed files with 23 additions and 2 deletions
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src/login/pam_systemd.c
+23 -2
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@@ -977,7 +977,7 @@ static void session_context_mangle(
/* Chop off leading /dev prefix that some clients specify, but others do not. */
c->tty = skip_dev_prefix(c->tty);
if (!isempty(c->display) && !c->vtnr) {
if (!isempty(c->display) && c->vtnr == 0) {
if (isempty(c->seat))
(void) get_seat_from_display(c->display, &c->seat, &c->vtnr);
else if (streq(c->seat, "seat0"))
@@ -1830,7 +1830,13 @@ _public_ PAM_EXTERN int pam_sm_open_session(
&default_capability_ambient_set) < 0)
return PAM_SESSION_ERR;
pam_debug_syslog(pamh, debug, "pam-systemd: initializing...");
pam_debug_syslog(pamh, debug,
"pam-systemd: initializing (class=%s type=%s desktop=%s area=%s inhibit=%s)...",
strempty(class_pam),
strempty(type_pam),
strempty(desktop_pam),
strempty(area_pam),
strempty(inhibit_what));
_cleanup_(user_record_unrefp) UserRecord *ur = NULL;
r = acquire_user_record(pamh, &ur);
@@ -1858,6 +1864,21 @@ _public_ PAM_EXTERN int pam_sm_open_session(
inhibit_what = getenv_harder(pamh, "XDG_SESSION_INHIBIT", inhibit_what);
inhibit_why = getenv_harder(pamh, "XDG_SESSION_INHIBIT_WHY", inhibit_why);
pam_debug_syslog(pamh, debug,
"Initial state: "
"service=%s display=%s tty=%s remote_user=%s remote_host=%s seat=%s vtnr=%"PRIu32" type=%s class=%s desktop=%s area=%s incomplete=%s inhibit=%s",
strempty(c.service),
strempty(c.display),
strempty(c.tty),
strempty(c.remote_user), strempty(c.remote_host),
strempty(c.seat), c.vtnr,
strempty(c.type),
strempty(c.class),
strempty(c.desktop),
strempty(c.area),
yes_no(c.incomplete),
strempty(inhibit_what));
const char *extra_device_access = getenv_harder(pamh, "XDG_SESSION_EXTRA_DEVICE_ACCESS", NULL);
if (extra_device_access) {
c.extra_device_access = strv_split(extra_device_access, ":");