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From 9576fa3ecf91fd4703e2180ac080fd975292730f Mon Sep 17 00:00:00 2001
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From: hese10 <heikki.kemppainen@nokia.com>
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Date: Wed, 12 Oct 2016 19:40:28 +0300
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Subject: [PATCH] Avoid forever loop for journalctl --list-boots command
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(#4278)
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When date is changed in system to future and normal user logs to new
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journal file, and then date is changed back to present time, the
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"journalctl --list-boot" command goes to forever loop. This commit tries
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to fix this problem by checking first the boot id list if the found boot
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id was already in that list. If it is found, then stopping the boot id
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find loop.
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(cherry picked from commit ec02a6c90a5d8b234db534ce3f8f1901f8532057)
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Conflicts:
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src/journal/journalctl.c
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Related: #1294516
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---
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src/journal/journalctl.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
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index 723854a..c771cff 100644
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--- a/src/journal/journalctl.c
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+++ b/src/journal/journalctl.c
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@@ -1039,7 +1039,7 @@ static int get_boots(
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bool skip_once;
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int r, count = 0;
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- BootId *head = NULL, *tail = NULL;
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+ BootId *head = NULL, *tail = NULL, *id;
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const bool advance_older = query_ref_boot && ref_boot_offset <= 0;
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sd_id128_t previous_boot_id;
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@@ -1121,6 +1121,13 @@ static int get_boots(
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break;
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}
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} else {
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+ LIST_FOREACH(boot_list, id, head) {
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+ if (sd_id128_equal(id->id, current->id)) {
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+ /* boot id already stored, something wrong with the journal files */
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+ /* exiting as otherwise this problem would cause forever loop */
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+ goto finish;
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+ }
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+ }
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LIST_INSERT_AFTER(boot_list, head, tail, current);
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tail = current;
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current = NULL;
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