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utmp: make sure we don't write the utmp reboot record twice on each boot
(Also, only send the audit msg once, too)
This commit is contained in:
parent
1cea22a5e3
commit
e7fb33ffef
Notes:
Lennart Poettering
2014-02-18 02:05:51 +01:00
Backport: bugfix
@ -46,13 +46,15 @@ int utmp_get_runlevel(int *runlevel, int *previous) {
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* very new and does not apply to the current script being
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* executed. */
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if ((e = getenv("RUNLEVEL")) && e[0] > 0) {
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e = getenv("RUNLEVEL");
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if (e && e[0] > 0) {
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*runlevel = e[0];
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if (previous) {
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/* $PREVLEVEL seems to be an Upstart thing */
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if ((e = getenv("PREVLEVEL")) && e[0] > 0)
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e = getenv("PREVLEVEL");
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if (e && e[0] > 0)
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*previous = e[0];
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else
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*previous = 0;
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@ -66,7 +68,8 @@ int utmp_get_runlevel(int *runlevel, int *previous) {
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setutxent();
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if (!(found = getutxid(&lookup)))
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found = getutxid(&lookup);
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if (!found)
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r = -errno;
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else {
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int a, b;
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@ -232,7 +235,8 @@ int utmp_put_dead_process(const char *id, pid_t pid, int code, int status) {
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lookup.ut_type = INIT_PROCESS; /* looks for DEAD_PROCESS, LOGIN_PROCESS, USER_PROCESS, too */
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strncpy(lookup.ut_id, sanitize_id(id), sizeof(lookup.ut_id));
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if (!(found = getutxid(&lookup)))
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found = getutxid(&lookup);
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if (!found)
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return 0;
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if (found->ut_pid != pid)
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@ -264,7 +268,8 @@ int utmp_put_runlevel(int runlevel, int previous) {
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if (previous <= 0) {
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/* Find the old runlevel automatically */
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if ((r = utmp_get_runlevel(&previous, NULL)) < 0) {
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r = utmp_get_runlevel(&previous, NULL);
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if (r < 0) {
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if (r != -ESRCH)
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return r;
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@ -343,16 +348,15 @@ static int write_to_terminal(const char *tty, const char *message) {
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}
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int utmp_wall(const char *message, bool (*match_tty)(const char *tty)) {
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struct utmpx *u;
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_cleanup_free_ char *text = NULL, *hn = NULL, *un = NULL, *tty = NULL;
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char date[FORMAT_TIMESTAMP_MAX];
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char *text = NULL, *hn = NULL, *un = NULL, *tty = NULL;
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struct utmpx *u;
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int r;
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if (!(hn = gethostname_malloc()) ||
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!(un = getlogname_malloc())) {
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r = -ENOMEM;
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goto finish;
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}
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hn = gethostname_malloc();
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un = getlogname_malloc();
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if (!hn || !un)
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return -ENOMEM;
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getttyname_harder(STDIN_FILENO, &tty);
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@ -363,19 +367,17 @@ int utmp_wall(const char *message, bool (*match_tty)(const char *tty)) {
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un, hn,
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tty ? " on " : "", strempty(tty),
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format_timestamp(date, sizeof(date), now(CLOCK_REALTIME)),
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message) < 0) {
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r = -ENOMEM;
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goto finish;
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}
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message) < 0)
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return -ENOMEM;
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setutxent();
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r = 0;
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while ((u = getutxent())) {
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int q;
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_cleanup_free_ char *buf = NULL;
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const char *path;
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char *buf = NULL;
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int q;
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if (u->ut_type != USER_PROCESS || u->ut_user[0] == 0)
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continue;
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@ -384,27 +386,18 @@ int utmp_wall(const char *message, bool (*match_tty)(const char *tty)) {
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if (path_startswith(u->ut_line, "/dev/"))
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path = u->ut_line;
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else {
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if (asprintf(&buf, "/dev/%.*s",
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(int) sizeof(u->ut_line), u->ut_line) < 0) {
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r = -ENOMEM;
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goto finish;
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}
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if (asprintf(&buf, "/dev/%.*s", (int) sizeof(u->ut_line), u->ut_line) < 0)
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return -ENOMEM;
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path = buf;
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}
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if (!match_tty || match_tty(path))
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if ((q = write_to_terminal(path, text)) < 0)
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if (!match_tty || match_tty(path)) {
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q = write_to_terminal(path, text);
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if (q < 0)
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r = q;
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free(buf);
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}
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}
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finish:
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free(hn);
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free(un);
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free(tty);
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free(text);
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return r;
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}
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@ -38,6 +38,7 @@
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#include "utmp-wtmp.h"
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#include "bus-util.h"
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#include "bus-error.h"
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#include "unit-name.h"
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typedef struct Context {
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sd_bus *bus;
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@ -93,27 +94,11 @@ static int get_current_runlevel(Context *c) {
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assert(c);
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for (i = 0; i < ELEMENTSOF(table); i++) {
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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_cleanup_free_ char *state = NULL;
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const char *path = NULL;
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_cleanup_free_ char *state = NULL, *path = NULL;
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r = sd_bus_call_method(
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c->bus,
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"org.freedesktop.systemd1",
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"/org/freedesktop/systemd1",
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"org.freedesktop.systemd1.Manager",
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"LoadUnit",
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&error,
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&reply,
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"s", table[i].special);
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if (r < 0) {
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log_warning("Failed to get runlevel: %s", bus_error_message(&error, -r));
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continue;
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}
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r = sd_bus_message_read(reply, "o", &path);
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if (r < 0)
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return bus_log_parse_error(r);
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path = unit_dbus_path_from_name(table[i].special);
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if (!path)
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return log_oom();
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r = sd_bus_get_property_string(
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c->bus,
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@ -202,21 +187,19 @@ static int on_runlevel(Context *c) {
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/* First, get last runlevel */
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q = utmp_get_runlevel(&previous, NULL);
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if (q < 0) {
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if (q < 0) {
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if (q != -ESRCH && q != -ENOENT) {
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log_error("Failed to get current runlevel: %s", strerror(-q));
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return q;
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}
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/* Hmm, we didn't find any runlevel, that means we
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* have been rebooted */
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r = on_reboot(c);
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previous = 0;
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}
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/* Secondly, get new runlevel */
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runlevel = get_current_runlevel(c);
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if (runlevel < 0)
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return runlevel;
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