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From 8a98e68dc1fdf10881fffc40604dfd28a49fdc27 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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(cherry-picked from commit 28ca867abdb20d0e4ac1901e2ed669cdb41ea3f6)
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Fixes #14695
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Related: #1812889
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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 cf8dad3fcd..86a7e2642a 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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@@ -337,7 +337,7 @@ 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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assert(f);
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assert(f->fd >= 0);
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diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
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index 37749c4459..ee9772b9bb 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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@@ -139,6 +139,7 @@ int journal_file_open(
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int journal_file_set_offline(JournalFile *f);
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void journal_file_close(JournalFile *j);
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+int journal_file_fstat(JournalFile *j);
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int journal_file_open_reliably(
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const char *fname,
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diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
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index 004fe646d4..09466df810 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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@@ -2386,6 +2386,8 @@ _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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@@ -2393,6 +2395,19 @@ _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_error("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
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