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OBS-URL: https://build.opensuse.org/package/show/Base:System/systemd?expand=0&rev=467
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Dr. Werner Fink 2013-11-26 15:16:36 +00:00 committed by Git OBS Bridge
parent c2c2ea7545
commit 3ab6a0116d
3 changed files with 180 additions and 0 deletions
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168
1012-pam_systemd_do_override_XDG_RUNTIME_DIR_of_the_original_user.patch Normal file
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@ -0,0 +1,168 @@
Based on upstream baae0358f349870544884e405e82e4be7d8add9f
| From: Lennart Poettering <lennart@poettering.net>
| Date: Tue, 26 Nov 2013 04:05:00 +0000
| Subject: pam_systemd: do not set XDG_RUNTIME_DIR if the session's original user is not the same as the newly logged in one
| It's better not to set any XDG_RUNTIME_DIR at all rather than one of a
| different user. So let's do this.
--- systemd-208/src/login/logind-dbus.c
+++ systemd-208/src/login/logind-dbus.c 2013-11-26 13:37:05.730735774 +0000
@@ -523,6 +523,7 @@ static int bus_manager_create_session(Ma
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_STRING, &session->user->runtime_path,
DBUS_TYPE_UNIX_FD, &fifo_fd,
+ DBUS_TYPE_UINT32, &session->user->uid,
DBUS_TYPE_STRING, &cseat,
DBUS_TYPE_UINT32, &vtnr,
DBUS_TYPE_BOOLEAN, &exists,
--- systemd-208/src/login/logind-session-dbus.c
+++ systemd-208/src/login/logind-session-dbus.c 2013-11-26 13:36:07.478236401 +0000
@@ -755,6 +755,7 @@ int session_send_create_reply(Session *s
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_STRING, &s->user->runtime_path,
DBUS_TYPE_UNIX_FD, &fifo_fd,
+ DBUS_TYPE_UINT32, &s->user->uid,
DBUS_TYPE_STRING, &cseat,
DBUS_TYPE_UINT32, &vtnr,
DBUS_TYPE_BOOLEAN, &exists,
--- systemd-208/src/login/pam-module.c
+++ systemd-208/src/login/pam-module.c 2013-11-26 14:32:20.194235777 +0000
@@ -93,24 +93,18 @@ static int get_user_data(
assert(ret_username);
assert(ret_pw);
- r = audit_loginuid_from_pid(0, &uid);
- if (r >= 0)
- pw = pam_modutil_getpwuid(handle, uid);
- else {
- r = pam_get_user(handle, &username, NULL);
- if (r != PAM_SUCCESS) {
- pam_syslog(handle, LOG_ERR, "Failed to get user name.");
- return r;
- }
-
- if (isempty(username)) {
- pam_syslog(handle, LOG_ERR, "User name not valid.");
- return PAM_AUTH_ERR;
- }
+ r = pam_get_user(handle, &username, NULL);
+ if (r != PAM_SUCCESS) {
+ pam_syslog(handle, LOG_ERR, "Failed to get user name.");
+ return r;
+ }
- pw = pam_modutil_getpwnam(handle, username);
+ if (isempty(username)) {
+ pam_syslog(handle, LOG_ERR, "User name not valid.");
+ return PAM_AUTH_ERR;
}
+ pw = pam_modutil_getpwnam(handle, username);
if (!pw) {
pam_syslog(handle, LOG_ERR, "Failed to get user data.");
return PAM_USER_UNKNOWN;
@@ -123,16 +117,14 @@ static int get_user_data(
}
static int get_seat_from_display(const char *display, const char **seat, uint32_t *vtnr) {
- _cleanup_free_ char *p = NULL;
- int r;
- _cleanup_close_ int fd = -1;
union sockaddr_union sa = {
.un.sun_family = AF_UNIX,
};
+ _cleanup_free_ char *p = NULL, *tty = NULL;
+ _cleanup_close_ int fd = -1;
struct ucred ucred;
socklen_t l;
- _cleanup_free_ char *tty = NULL;
- int v;
+ int v, r;
assert(display);
assert(vtnr);
@@ -194,13 +186,12 @@ _public_ PAM_EXTERN int pam_sm_open_sess
dbus_bool_t remote, existing;
int r;
uint32_t vtnr = 0;
+ uid_t original_uid;
assert(handle);
dbus_error_init(&error);
- /* pam_syslog(handle, LOG_INFO, "pam-systemd initializing"); */
-
/* Make this a NOP on non-logind systems */
if (!logind_running())
return PAM_SUCCESS;
@@ -213,6 +204,9 @@ _public_ PAM_EXTERN int pam_sm_open_sess
goto finish;
}
+ if (debug)
+ pam_syslog(handle, LOG_INFO, "pam-systemd initializing");
+
r = get_user_data(handle, &username, &pw);
if (r != PAM_SUCCESS)
goto finish;
@@ -374,7 +368,11 @@ _public_ PAM_EXTERN int pam_sm_open_sess
if (debug)
pam_syslog(handle, LOG_DEBUG, "Asking logind to create session: "
"uid=%u pid=%u service=%s type=%s class=%s seat=%s vtnr=%u tty=%s display=%s remote=%s remote_user=%s remote_host=%s",
- uid, pid, service, type, class, seat, vtnr, tty, display, yes_no(remote), remote_user, remote_host);
+ pw->pw_uid, pid,
+ strempty(service),
+ type, class,
+ seat, vtnr, tty, display,
+ yes_no(remote), remote_user, remote_host);
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
@@ -388,6 +386,7 @@ _public_ PAM_EXTERN int pam_sm_open_sess
DBUS_TYPE_OBJECT_PATH, &object_path,
DBUS_TYPE_STRING, &runtime_path,
DBUS_TYPE_UNIX_FD, &session_fd,
+ DBUS_TYPE_UINT32, &original_uid,
DBUS_TYPE_STRING, &seat,
DBUS_TYPE_UINT32, &vtnr,
DBUS_TYPE_BOOLEAN, &existing,
@@ -399,8 +398,8 @@ _public_ PAM_EXTERN int pam_sm_open_sess
if (debug)
pam_syslog(handle, LOG_DEBUG, "Reply from logind: "
- "id=%s object_path=%s runtime_path=%s session_fd=%d seat=%s vtnr=%u",
- id, object_path, runtime_path, session_fd, seat, vtnr);
+ "id=%s object_path=%s runtime_path=%s session_fd=%d seat=%s vtnr=%u original_uid=%u",
+ id, object_path, runtime_path, session_fd, seat, vtnr, original_uid);
r = pam_misc_setenv(handle, "XDG_SESSION_ID", id, 0);
if (r != PAM_SUCCESS) {
@@ -408,10 +407,24 @@ _public_ PAM_EXTERN int pam_sm_open_sess
goto finish;
}
- r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", runtime_path, 0);
- if (r != PAM_SUCCESS) {
- pam_syslog(handle, LOG_ERR, "Failed to set runtime dir.");
- goto finish;
+ if (original_uid == pw->pw_uid) {
+ /* Don't set $XDG_RUNTIME_DIR if the user we now
+ * authenticated for does not match the original user
+ * of the session. We do this in order not to result
+ * in privileged apps clobbering the runtime directory
+ * unnecessarily. */
+
+ r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", runtime_path, 0);
+ if (r != PAM_SUCCESS) {
+ pam_syslog(handle, LOG_ERR, "Failed to set runtime dir.");
+ goto finish;
+ }
+ } else {
+ (void) unsetenv("XDG_RUNTIME_DIR");
+ r = pam_putenv(handle, "XDG_RUNTIME_DIR");
+ if (r != PAM_SUCCESS && r != PAM_BAD_ITEM) {
+ pam_syslog(handle, LOG_ERR, "Failed to unset runtime dir.");
+ }
}
if (!isempty(seat)) {

9
systemd.changes
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@ -1,3 +1,12 @@
-------------------------------------------------------------------
Tue Nov 26 15:12:58 UTC 2013 - werner@suse.de
- Add patch
1012-pam_systemd_do_override_XDG_RUNTIME_DIR_of_the_original_user.patch
to avoid (xdg-)su to set XDG_RUNTIME_DIR to the original user and
avoid that e.g. pulseaudio will create /run/user/<pid>/pulse owned
by root (bnc#852015)
-------------------------------------------------------------------
Thu Nov 21 12:27:11 UTC 2013 - werner@suse.de

3
systemd.spec
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@ -260,6 +260,8 @@ Patch1009: 1009-make-xsltproc-use-correct-ROFF-links.patch
Patch1010: 1010-do-not-install-sulogin-unit-with-poweroff.patch
# PATCH-FIX-OPENSUSE 1011-check-4-valid-kmsg-device.patch -- Avoid busy systemd-journald (bnc#851393)
Patch1011: 1011-check-4-valid-kmsg-device.patch
# PATCH-FIX-PSTREAM 1012-pam_systemd_do_override_XDG_RUNTIME_DIR_of_the_original_user.patch
Patch1012: 1012-pam_systemd_do_override_XDG_RUNTIME_DIR_of_the_original_user.patch
%description
Systemd is a system and service manager, compatible with SysV and LSB
@ -537,6 +539,7 @@ cp %{SOURCE7} m4/
%patch1009 -p1
%patch1010 -p1
%patch1011 -p1
%patch1012 -p1
# ensure generate files are removed
rm -f units/emergency.service