X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Flogind-inhibit.c;h=35e1abd72918fcea2d8893829ecc57f17efc3d0f;hp=2007ec79e4b35a8ff12d1879bef8c5127ed313dc;hb=85a428c69465b047731b6abb5005f01824f1444e;hpb=4943c1c94ba751c98763f4232b4350481b22c90a diff --git a/src/login/logind-inhibit.c b/src/login/logind-inhibit.c index 2007ec79e..35e1abd72 100644 --- a/src/login/logind-inhibit.c +++ b/src/login/logind-inhibit.c @@ -21,15 +21,14 @@ #include #include -#include #include -#include #include #include "util.h" #include "mkdir.h" #include "path-util.h" #include "logind-inhibit.h" +#include "fileio.h" Inhibitor* inhibitor_new(Manager *m, const char* id) { Inhibitor *i; @@ -63,12 +62,13 @@ Inhibitor* inhibitor_new(Manager *m, const char* id) { void inhibitor_free(Inhibitor *i) { assert(i); - free(i->who); - free(i->why); - hashmap_remove(i->manager->inhibitors, i->id); + inhibitor_remove_fifo(i); + free(i->who); + free(i->why); + if (i->state_file) { unlink(i->state_file); free(i->state_file); @@ -78,13 +78,13 @@ void inhibitor_free(Inhibitor *i) { } int inhibitor_save(Inhibitor *i) { - char *temp_path, *cc; + _cleanup_free_ char *temp_path = NULL; + _cleanup_fclose_ FILE *f = NULL; int r; - FILE *f; assert(i); - r = safe_mkdir("/run/systemd/inhibit", 0755, 0, 0); + r = mkdir_safe_label("/run/systemd/inhibit", 0755, 0, 0); if (r < 0) goto finish; @@ -106,23 +106,23 @@ int inhibitor_save(Inhibitor *i) { (unsigned long) i->pid); if (i->who) { + _cleanup_free_ char *cc = NULL; + cc = cescape(i->who); if (!cc) r = -ENOMEM; - else { + else fprintf(f, "WHO=%s\n", cc); - free(cc); - } } if (i->why) { + _cleanup_free_ char *cc = NULL; + cc = cescape(i->why); if (!cc) r = -ENOMEM; - else { + else fprintf(f, "WHY=%s\n", cc); - free(cc); - } } if (i->fifo_path) @@ -136,9 +136,6 @@ int inhibitor_save(Inhibitor *i) { unlink(temp_path); } - fclose(f); - free(temp_path); - finish: if (r < 0) log_error("Failed to save inhibit data for %s: %s", i->id, strerror(-r)); @@ -163,7 +160,7 @@ int inhibitor_start(Inhibitor *i) { i->started = true; - manager_send_changed(i->manager, "Inhibited\0"); + manager_send_changed(i->manager, i->mode == INHIBIT_BLOCK ? "BlockInhibited" : "DelayInhibited", NULL); return 0; } @@ -182,16 +179,14 @@ int inhibitor_stop(Inhibitor *i) { i->started = false; - manager_send_changed(i->manager, "Inhibited\0"); + manager_send_changed(i->manager, i->mode == INHIBIT_BLOCK ? "BlockInhibited" : "DelayInhibited", NULL); return 0; } int inhibitor_load(Inhibitor *i) { - InhibitWhat w; - InhibitMode mm; - int r; - char *cc, + + _cleanup_free_ char *what = NULL, *uid = NULL, *pid = NULL, @@ -199,6 +194,11 @@ int inhibitor_load(Inhibitor *i) { *why = NULL, *mode = NULL; + InhibitWhat w; + InhibitMode mm; + char *cc; + int r; + r = parse_env_file(i->state_file, NEWLINE, "WHAT", &what, "UID", &uid, @@ -209,7 +209,7 @@ int inhibitor_load(Inhibitor *i) { "FIFO", &i->fifo_path, NULL); if (r < 0) - goto finish; + return r; w = what ? inhibit_what_from_string(what) : 0; if (w >= 0) @@ -219,18 +219,22 @@ int inhibitor_load(Inhibitor *i) { if (mm >= 0) i->mode = mm; - if (uid) - parse_uid(uid, &i->uid); + if (uid) { + r = parse_uid(uid, &i->uid); + if (r < 0) + return r; + } - if (pid) - parse_pid(pid, &i->pid); + if (pid) { + r = parse_pid(pid, &i->pid); + if (r < 0) + return r; + } if (who) { cc = cunescape(who); - if (!cc) { - r = -ENOMEM; - goto finish; - } + if (!cc) + return -ENOMEM; free(i->who); i->who = cc; @@ -238,10 +242,8 @@ int inhibitor_load(Inhibitor *i) { if (why) { cc = cunescape(why); - if (!cc) { - r = -ENOMEM; - goto finish; - } + if (!cc) + return -ENOMEM; free(i->why); i->why = cc; @@ -255,14 +257,20 @@ int inhibitor_load(Inhibitor *i) { close_nointr_nofail(fd); } -finish: - free(what); - free(uid); - free(pid); - free(who); - free(why); + return 0; +} - return r; +static int inhibitor_dispatch_fifo(sd_event_source *s, int fd, uint32_t revents, void *userdata) { + Inhibitor *i = userdata; + + assert(s); + assert(fd == i->fifo_fd); + assert(i); + + inhibitor_stop(i); + inhibitor_free(i); + + return 0; } int inhibitor_create_fifo(Inhibitor *i) { @@ -272,11 +280,12 @@ int inhibitor_create_fifo(Inhibitor *i) { /* Create FIFO */ if (!i->fifo_path) { - r = safe_mkdir("/run/systemd/inhibit", 0755, 0, 0); + r = mkdir_safe_label("/run/systemd/inhibit", 0755, 0, 0); if (r < 0) return r; - if (asprintf(&i->fifo_path, "/run/systemd/inhibit/%s.ref", i->id) < 0) + i->fifo_path = strjoin("/run/systemd/inhibit/", i->id, ".ref", NULL); + if (!i->fifo_path) return -ENOMEM; if (mkfifo(i->fifo_path, 0600) < 0 && errno != EEXIST) @@ -285,22 +294,19 @@ int inhibitor_create_fifo(Inhibitor *i) { /* Open reading side */ if (i->fifo_fd < 0) { - struct epoll_event ev; - i->fifo_fd = open(i->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY); if (i->fifo_fd < 0) return -errno; + } - r = hashmap_put(i->manager->inhibitor_fds, INT_TO_PTR(i->fifo_fd + 1), i); + if (!i->event_source) { + r = sd_event_add_io(i->manager->event, i->fifo_fd, 0, inhibitor_dispatch_fifo, i, &i->event_source); if (r < 0) return r; - zero(ev); - ev.events = 0; - ev.data.u32 = FD_FIFO_BASE + i->fifo_fd; - - if (epoll_ctl(i->manager->epoll_fd, EPOLL_CTL_ADD, i->fifo_fd, &ev) < 0) - return -errno; + r = sd_event_source_set_priority(i->event_source, SD_EVENT_PRIORITY_IDLE); + if (r < 0) + return r; } /* Open writing side */ @@ -314,9 +320,10 @@ int inhibitor_create_fifo(Inhibitor *i) { void inhibitor_remove_fifo(Inhibitor *i) { assert(i); + if (i->event_source) + i->event_source = sd_event_source_unref(i->event_source); + if (i->fifo_fd >= 0) { - assert_se(hashmap_remove(i->manager->inhibitor_fds, INT_TO_PTR(i->fifo_fd + 1)) == i); - assert_se(epoll_ctl(i->manager->epoll_fd, EPOLL_CTL_DEL, i->fifo_fd, NULL) == 0); close_nointr_nofail(i->fifo_fd); i->fifo_fd = -1; } @@ -335,14 +342,39 @@ InhibitWhat manager_inhibit_what(Manager *m, InhibitMode mm) { assert(m); - HASHMAP_FOREACH(i, m->inhibitor_fds, j) + HASHMAP_FOREACH(i, m->inhibitors, j) if (i->mode == mm) what |= i->what; return what; } -bool manager_is_inhibited(Manager *m, InhibitWhat w, InhibitMode mm, dual_timestamp *since) { +static int pid_is_active(Manager *m, pid_t pid) { + Session *s; + int r; + + r = manager_get_session_by_pid(m, pid, &s); + if (r < 0) + return r; + + /* If there's no session assigned to it, then it's globally + * active on all ttys */ + if (r == 0) + return 1; + + return session_is_active(s); +} + +bool manager_is_inhibited( + Manager *m, + InhibitWhat w, + InhibitMode mm, + dual_timestamp *since, + bool ignore_inactive, + bool ignore_uid, + uid_t uid, + Inhibitor **offending) { + Inhibitor *i; Iterator j; struct dual_timestamp ts = { 0, 0 }; @@ -351,18 +383,27 @@ bool manager_is_inhibited(Manager *m, InhibitWhat w, InhibitMode mm, dual_timest assert(m); assert(w > 0 && w < _INHIBIT_WHAT_MAX); - HASHMAP_FOREACH(i, m->inhibitor_fds, j) { + HASHMAP_FOREACH(i, m->inhibitors, j) { if (!(i->what & w)) continue; if (i->mode != mm) continue; + if (ignore_inactive && pid_is_active(m, i->pid) <= 0) + continue; + + if (ignore_uid && i->uid == uid) + continue; + if (!inhibited || i->since.monotonic < ts.monotonic) ts = i->since; inhibited = true; + + if (offending) + *offending = i; } if (since) @@ -372,22 +413,34 @@ bool manager_is_inhibited(Manager *m, InhibitWhat w, InhibitMode mm, dual_timest } const char *inhibit_what_to_string(InhibitWhat w) { - - static const char* const table[_INHIBIT_WHAT_MAX] = { - [0] = "", - [INHIBIT_SHUTDOWN] = "shutdown", - [INHIBIT_SLEEP] = "sleep", - [INHIBIT_IDLE] = "idle", - [INHIBIT_SHUTDOWN|INHIBIT_SLEEP] = "shutdown:sleep", - [INHIBIT_SHUTDOWN|INHIBIT_IDLE] = "shutdown:idle", - [INHIBIT_SHUTDOWN|INHIBIT_SLEEP|INHIBIT_IDLE] = "shutdown:sleep:idle", - [INHIBIT_SLEEP|INHIBIT_IDLE] = "sleep:idle" - }; + static __thread char buffer[97]; + char *p; if (w < 0 || w >= _INHIBIT_WHAT_MAX) return NULL; - return table[w]; + p = buffer; + if (w & INHIBIT_SHUTDOWN) + p = stpcpy(p, "shutdown:"); + if (w & INHIBIT_SLEEP) + p = stpcpy(p, "sleep:"); + if (w & INHIBIT_IDLE) + p = stpcpy(p, "idle:"); + if (w & INHIBIT_HANDLE_POWER_KEY) + p = stpcpy(p, "handle-power-key:"); + if (w & INHIBIT_HANDLE_SUSPEND_KEY) + p = stpcpy(p, "handle-suspend-key:"); + if (w & INHIBIT_HANDLE_HIBERNATE_KEY) + p = stpcpy(p, "handle-hibernate-key:"); + if (w & INHIBIT_HANDLE_LID_SWITCH) + p = stpcpy(p, "handle-lid-switch:"); + + if (p > buffer) + *(p-1) = 0; + else + *p = 0; + + return buffer; } InhibitWhat inhibit_what_from_string(const char *s) { @@ -396,18 +449,25 @@ InhibitWhat inhibit_what_from_string(const char *s) { size_t l; FOREACH_WORD_SEPARATOR(w, l, s, ":", state) { - if (l == 8 && strncmp(w, "shutdown", l) == 0) + if (l == 8 && strneq(w, "shutdown", l)) what |= INHIBIT_SHUTDOWN; - else if (l == 5 && strncmp(w, "sleep", l) == 0) + else if (l == 5 && strneq(w, "sleep", l)) what |= INHIBIT_SLEEP; - else if (l == 4 && strncmp(w, "idle", l) == 0) + else if (l == 4 && strneq(w, "idle", l)) what |= INHIBIT_IDLE; + else if (l == 16 && strneq(w, "handle-power-key", l)) + what |= INHIBIT_HANDLE_POWER_KEY; + else if (l == 18 && strneq(w, "handle-suspend-key", l)) + what |= INHIBIT_HANDLE_SUSPEND_KEY; + else if (l == 20 && strneq(w, "handle-hibernate-key", l)) + what |= INHIBIT_HANDLE_HIBERNATE_KEY; + else if (l == 17 && strneq(w, "handle-lid-switch", l)) + what |= INHIBIT_HANDLE_LID_SWITCH; else return _INHIBIT_WHAT_INVALID; } return what; - } static const char* const inhibit_mode_table[_INHIBIT_MODE_MAX] = {