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Blame SOURCES/0351-sd-journal-close-journal-files-that-were-deleted-by-.patch

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From 45275461f4a5293f15191ec5cb3bb80219ef2474 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Michal=20Sekleta=CC=81r?= <msekleta@redhat.com>
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Date: Tue, 4 Feb 2020 14:23:14 +0100
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Subject: [PATCH] sd-journal: close journal files that were deleted by journald
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 before we've setup inotify watch
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Fixes #14695
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(cherry picked from commit 28ca867abdb20d0e4ac1901e2ed669cdb41ea3f6)
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Related: #1796128
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---
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 src/journal/journal-file.c |  2 +-
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 src/journal/journal-file.h |  1 +
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 src/journal/sd-journal.c   | 15 +++++++++++++++
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 3 files changed, 17 insertions(+), 1 deletion(-)
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diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
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index 8249b11b23..7ab3c47fc9 100644
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--- a/src/journal/journal-file.c
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+++ b/src/journal/journal-file.c
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@@ -597,7 +597,7 @@ static int journal_file_verify_header(JournalFile *f) {
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         return 0;
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 }
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-static int journal_file_fstat(JournalFile *f) {
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+int journal_file_fstat(JournalFile *f) {
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         int r;
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         assert(f);
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diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
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index 6a44fd39d2..6069b35234 100644
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--- a/src/journal/journal-file.h
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+++ b/src/journal/journal-file.h
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@@ -144,6 +144,7 @@ int journal_file_open(
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 int journal_file_set_offline(JournalFile *f, bool wait);
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 bool journal_file_is_offlining(JournalFile *f);
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 JournalFile* journal_file_close(JournalFile *j);
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+int journal_file_fstat(JournalFile *f);
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 DEFINE_TRIVIAL_CLEANUP_FUNC(JournalFile*, journal_file_close);
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 int journal_file_open_reliably(
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diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
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index 323300baec..c06255e273 100644
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--- a/src/journal/sd-journal.c
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+++ b/src/journal/sd-journal.c
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@@ -2584,6 +2584,8 @@ _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) {
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         assert_return(!journal_pid_changed(j), -ECHILD);
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         if (j->inotify_fd < 0) {
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+                Iterator i;
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+                JournalFile *f;
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                 /* This is the first invocation, hence create the
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                  * inotify watch */
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@@ -2591,6 +2593,19 @@ _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) {
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                 if (r < 0)
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                         return r;
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+                /* Server might have done some vacuuming while we weren't watching.
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+                   Get rid of the deleted files now so they don't stay around indefinitely. */
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+                ORDERED_HASHMAP_FOREACH(f, j->files, i) {
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+                        r = journal_file_fstat(f);
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+                        if (r < 0) {
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+                                log_debug_errno(r,"Failed to fstat() journal file '%s' : %m", f->path);
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+                                continue;
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+                        }
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+
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+                        if (f->last_stat.st_nlink <= 0)
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+                                remove_file_real(j, f);
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+                }
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+
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                 /* The journal might have changed since the context
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                  * object was created and we weren't watching before,
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                  * hence don't wait for anything, and return