journal: automatically evolve FSS key even when nothing is logged

[elogind.git] / src / journal / journald.c

diff --git a/src/journal/journald.c b/src/journal/journald.c
index 384ed90568e11382e1a72206b2d7a45907fc3a01..f2dd4050b61cf884d5e20f66e6c509bb7d15dd0e 100644 (file)
--- a/src/journal/journald.c
+++ b/src/journal/journald.c
@@ -47,6 +47,8 @@
 #include "list.h"
 #include "journal-rate-limit.h"
 #include "journal-internal.h"
+#include "journal-vacuum.h"
+#include "journal-authenticate.h"
 #include "conf-parser.h"
 #include "journald.h"
 #include "virt.h"
@@ -315,7 +317,7 @@ static JournalFile* find_journal(Server *s, uid_t uid) {
                 journal_file_close(f);
         }
 
-        r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, false, &s->system_metrics, s->mmap, s->system_journal, &f);
+        r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, s->system_journal, &f);
         free(p);
 
         if (r < 0)
@@ -352,7 +354,7 @@ static void server_rotate(Server *s) {
         }
 
         if (s->system_journal) {
-                r = journal_file_rotate(&s->system_journal, s->compress, true);
+                r = journal_file_rotate(&s->system_journal, s->compress, s->seal);
                 if (r < 0)
                         if (s->system_journal)
                                 log_error("Failed to rotate %s: %s", s->system_journal->path, strerror(-r));
@@ -364,7 +366,7 @@ static void server_rotate(Server *s) {
         }
 
         HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
-                r = journal_file_rotate(&f, s->compress, false);
+                r = journal_file_rotate(&f, s->compress, s->seal);
                 if (r < 0)
                         if (f->path)
                                 log_error("Failed to rotate %s: %s", f->path, strerror(-r));
@@ -2006,7 +2008,7 @@ static int system_journal_open(Server *s) {
                 if (!fn)
                         return -ENOMEM;
 
-                r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, true, &s->system_metrics, s->mmap, NULL, &s->system_journal);
+                r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal);
                 free(fn);
 
                 if (r >= 0)
@@ -2770,6 +2772,7 @@ static int server_init(Server *s) {
         zero(*s);
         s->syslog_fd = s->native_fd = s->stdout_fd = s->signal_fd = s->epoll_fd = s->dev_kmsg_fd = -1;
         s->compress = true;
+        s->seal = true;
 
         s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
         s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
@@ -2793,7 +2796,7 @@ static int server_init(Server *s) {
         if (!s->user_journals)
                 return log_oom();
 
-        s->mmap = mmap_cache_new(_OBJECT_TYPE_MAX, USER_JOURNALS_MAX + 2);
+        s->mmap = mmap_cache_new();
         if (!s->mmap)
                 return log_oom();
 
@@ -2967,8 +2970,26 @@ int main(int argc, char *argv[]) {
 
         for (;;) {
                 struct epoll_event event;
+                int t;
 
-                r = epoll_wait(server.epoll_fd, &event, 1, -1);
+#ifdef HAVE_GCRYPT
+                usec_t u;
+
+                if (server.system_journal &&
+                    journal_file_next_evolve_usec(server.system_journal, &u)) {
+                        usec_t n;
+
+                        n = now(CLOCK_MONOTONIC);
+
+                        if (n >= u)
+                                t = 0;
+                        else
+                                t = (int) ((u - n + USEC_PER_MSEC - 1) / USEC_PER_MSEC);
+                } else
+#endif
+                        t = -1;
+
+                r = epoll_wait(server.epoll_fd, &event, 1, t);
                 if (r < 0) {
 
                         if (errno == EINTR)
@@ -2977,14 +2998,20 @@ int main(int argc, char *argv[]) {
                         log_error("epoll_wait() failed: %m");
                         r = -errno;
                         goto finish;
-                } else if (r == 0)
-                        break;
+                }
 
-                r = process_event(&server, &event);
-                if (r < 0)
-                        goto finish;
-                else if (r == 0)
-                        break;
+                if (r > 0) {
+                        r = process_event(&server, &event);
+                        if (r < 0)
+                                goto finish;
+                        else if (r == 0)
+                                break;
+                }
+
+#ifdef HAVE_GCRYPT
+                if (server.system_journal)
+                        journal_file_maybe_append_tag(server.system_journal, 0);
+#endif
         }
 
         log_debug("systemd-journald stopped as pid %lu", (unsigned long) getpid());