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From 19bb218559b8dca65bbb68ad7a4ff0bc9cbfe8fb Mon Sep 17 00:00:00 2001
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From: Stepan Broz <sbroz@redhat.com>
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Date: Wed, 11 Mar 2020 14:45:26 +0100
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Subject: [PATCH] journal: break recursion
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available_space(s, true) tries to log the current status, which does, in
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turn, lead to another call to available_space(s, true) and so on and so
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on... The call sequence is:
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available_space()
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  server_driver_message()
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    dispatch_message_real()
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      write_to_journal()
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        find_journal()
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          system_journal_open()
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            available_space()
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RHEL-only
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Resolves: #1778744
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---
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 src/journal/journald-server.c | 12 ++++++------
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 1 file changed, 6 insertions(+), 6 deletions(-)
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diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
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index ffe2daa7be..11348af490 100644
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--- a/src/journal/journald-server.c
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+++ b/src/journal/journald-server.c
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@@ -311,7 +311,7 @@ static bool flushed_flag_is_set(void) {
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         return access("/run/systemd/journal/flushed", F_OK) >= 0;
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 }
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-static int system_journal_open(Server *s, bool flush_requested) {
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+static int system_journal_open(Server *s, bool flush_requested, bool verbose) {
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         int r;
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         char *fn;
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         sd_id128_t machine;
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@@ -344,7 +344,7 @@ static int system_journal_open(Server *s, bool flush_requested) {
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                 if (r >= 0) {
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                         server_fix_perms(s, s->system_journal, 0);
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-                        available_space(s, true);
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+                        available_space(s, verbose);
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                 } else {
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                         if (r != -ENOENT && r != -EROFS)
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                                 log_warning_errno(r, "Failed to open system journal: %m");
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@@ -406,7 +406,7 @@ static int system_journal_open(Server *s, bool flush_requested) {
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                 if (s->runtime_journal) {
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                         server_fix_perms(s, s->runtime_journal, 0);
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-                        available_space(s, true);
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+                        available_space(s, verbose);
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                 }
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         }
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@@ -430,7 +430,7 @@ static JournalFile* find_journal(Server *s, uid_t uid) {
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          * else that's left the journals as NULL).
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          *
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          * Fixes https://github.com/systemd/systemd/issues/3968 */
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-        (void) system_journal_open(s, false);
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+        (void) system_journal_open(s, false, false);
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         /* We split up user logs only on /var, not on /run. If the
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          * runtime file is open, we write to it exclusively, in order
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@@ -1132,7 +1132,7 @@ int server_flush_to_var(Server *s, bool require_flag_file) {
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         if (require_flag_file && !flushed_flag_is_set())
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                 return 0;
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-        system_journal_open(s, true);
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+        system_journal_open(s, true, true);
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         if (!s->system_journal)
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                 return 0;
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@@ -1903,7 +1903,7 @@ int server_init(Server *s) {
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         (void) server_connect_notify(s);
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-        r = system_journal_open(s, false);
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+        r = system_journal_open(s, false, true);
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         if (r < 0)
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                 return r;
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