X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Flogind-user.c;h=21d7268120a9b115ce621951d8447cc86370a3c1;hp=71bff96728fd1b733b1ccd654e729103549b74d2;hb=31e57d94c86e0a4f332f30033b10e402fec4aac7;hpb=0eb4b7f2e7ed1dda0511b440ec002c668de99fb9 diff --git a/src/login/logind-user.c b/src/login/logind-user.c index 71bff9672..21d726812 100644 --- a/src/login/logind-user.c +++ b/src/login/logind-user.c @@ -36,9 +36,10 @@ #include "bus-error.h" #include "conf-parser.h" #include "clean-ipc.h" -#include "logind-user.h" #include "smack-util.h" #include "formats-util.h" +#include "label.h" +#include "logind-user.h" User* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) { User *u; @@ -105,7 +106,7 @@ void user_free(User *u) { free(u); } -int user_save(User *u) { +static int user_save_internal(User *u) { _cleanup_free_ char *temp_path = NULL; _cleanup_fclose_ FILE *f = NULL; int r; @@ -113,9 +114,6 @@ int user_save(User *u) { assert(u); assert(u->state_file); - if (!u->started) - return 0; - r = mkdir_safe_label("/run/systemd/users", 0755, 0, 0); if (r < 0) goto finish; @@ -258,6 +256,15 @@ finish: return r; } +int user_save(User *u) { + assert(u); + + if (!u->started) + return 0; + + return user_save_internal (u); +} + int user_load(User *u) { _cleanup_free_ char *display = NULL, *realtime = NULL, *monotonic = NULL; Session *s = NULL; @@ -320,10 +327,10 @@ static int user_mkdir_runtime_path(User *u) { } else p = u->runtime_path; - if (path_is_mount_point(p, false) <= 0) { + if (path_is_mount_point(p, 0) <= 0) { _cleanup_free_ char *t = NULL; - (void) mkdir(p, 0700); + (void) mkdir_label(p, 0700); if (mac_smack_use()) r = asprintf(&t, "mode=0700,smackfsroot=*,uid=" UID_FMT ",gid=" GID_FMT ",size=%zu", u->uid, u->gid, u->manager->runtime_dir_size); @@ -351,6 +358,10 @@ static int user_mkdir_runtime_path(User *u) { goto fail; } } + + r = label_fix(p, false, false); + if (r < 0) + log_warning_errno(r, "Failed to fix label of '%s', ignoring: %m", p); } u->runtime_path = p; @@ -453,6 +464,12 @@ int user_start(User *u) { if (r < 0) return r; + /* Save the user data so far, because pam_systemd will read the + * XDG_RUNTIME_DIR out of it while starting up systemd --user. + * We need to do user_save_internal() because we have not + * "officially" started yet. */ + user_save_internal(u); + /* Spawn user systemd */ r = user_start_service(u); if (r < 0) @@ -619,7 +636,7 @@ int user_finalize(User *u) { int user_get_idle_hint(User *u, dual_timestamp *t) { Session *s; bool idle_hint = true; - dual_timestamp ts = { 0, 0 }; + dual_timestamp ts = DUAL_TIMESTAMP_NULL; assert(u); @@ -704,7 +721,7 @@ UserState user_get_state(User *u) { if (u->stopping) return USER_CLOSING; - if (u->slice_job || u->service_job) + if (!u->started || u->slice_job || u->service_job) return USER_OPENING; if (u->sessions) { @@ -738,54 +755,73 @@ int user_kill(User *u, int signo) { return manager_kill_unit(u->manager, u->slice, KILL_ALL, signo, NULL); } +static bool elect_display_filter(Session *s) { + /* Return true if the session is a candidate for the user’s ‘primary + * session’ or ‘display’. */ + assert(s); + + return (s->class == SESSION_USER && !s->stopping); +} + +static int elect_display_compare(Session *s1, Session *s2) { + /* Indexed by SessionType. Lower numbers mean more preferred. */ + const int type_ranks[_SESSION_TYPE_MAX] = { + [SESSION_UNSPECIFIED] = 0, + [SESSION_TTY] = -2, + [SESSION_X11] = -3, + [SESSION_WAYLAND] = -3, + [SESSION_MIR] = -3, + [SESSION_WEB] = -1, + }; + + /* Calculate the partial order relationship between s1 and s2, + * returning < 0 if s1 is preferred as the user’s ‘primary session’, + * 0 if s1 and s2 are equally preferred or incomparable, or > 0 if s2 + * is preferred. + * + * s1 or s2 may be NULL. */ + if (!s1 && !s2) + return 0; + + if ((s1 == NULL) != (s2 == NULL)) + return (s1 == NULL) - (s2 == NULL); + + if (s1->stopping != s2->stopping) + return s1->stopping - s2->stopping; + + if ((s1->class != SESSION_USER) != (s2->class != SESSION_USER)) + return (s1->class != SESSION_USER) - (s2->class != SESSION_USER); + + if ((s1->type == _SESSION_TYPE_INVALID) != (s2->type == _SESSION_TYPE_INVALID)) + return (s1->type == _SESSION_TYPE_INVALID) - (s2->type == _SESSION_TYPE_INVALID); + + if (s1->type != s2->type) + return type_ranks[s1->type] - type_ranks[s2->type]; + + return 0; +} + void user_elect_display(User *u) { - Session *graphical = NULL, *text = NULL, *other = NULL, *s; + Session *s; assert(u); /* This elects a primary session for each user, which we call * the "display". We try to keep the assignment stable, but we * "upgrade" to better choices. */ + log_debug("Electing new display for user %s", u->name); LIST_FOREACH(sessions_by_user, s, u->sessions) { - - if (s->class != SESSION_USER) - continue; - - if (s->stopping) + if (!elect_display_filter(s)) { + log_debug("Ignoring session %s", s->id); continue; + } - if (SESSION_TYPE_IS_GRAPHICAL(s->type)) - graphical = s; - else if (s->type == SESSION_TTY) - text = s; - else - other = s; - } - - if (graphical && - (!u->display || - u->display->class != SESSION_USER || - u->display->stopping || - !SESSION_TYPE_IS_GRAPHICAL(u->display->type))) { - u->display = graphical; - return; - } - - if (text && - (!u->display || - u->display->class != SESSION_USER || - u->display->stopping || - u->display->type != SESSION_TTY)) { - u->display = text; - return; + if (elect_display_compare(s, u->display) < 0) { + log_debug("Choosing session %s in preference to %s", s->id, u->display ? u->display->id : "-"); + u->display = s; + } } - - if (other && - (!u->display || - u->display->class != SESSION_USER || - u->display->stopping)) - u->display = other; } static const char* const user_state_table[_USER_STATE_MAX] = {