yosemite4: fix the console log file does not rotate

Summary:
Description:
- The file descriptor is lost after a sled cycle. The BMC will set the file size to 0 when it boots up.
- If the log recorded after each sled cycle does not exceed 256K, the log file will grow indefinitely.
- Set the end of the file as the file size.

Motivation:
As title.

X-link: facebookexternal/openbmc.wiwynn#3150

Test Plan:
- Build code : pass
- Sled cycle and check the log size

Gerrit link:
- https://gerrit.openbmc.org/c/openbmc/obmc-console/+/73689

# Description

Please include a summary of the change and which issue is fixed.

# Motivation

Please include an explanation of why you these changes are necessary

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

Reviewed By: williamspatrick

Differential Revision: D61717249

fbshipit-source-id: e89493cbd4e7d8659897fb80e5794a3a4d046e64

Author: MarshallZhan-wiwynn

meta-facebook/meta-yosemite4/recipes-phosphor/obmc-console/files/0001-Fix-the-console-log-file-does-not-rotate.patch

@@ -0,0 +1,27 @@
+From b750a1acd68c7139276a11c205a2d06791719530 Mon Sep 17 00:00:00 2001
+From: Marshall Zhan <marshall.zhan.wiwynn@gmail.com>
+Date: Thu, 22 Aug 2024 16:43:59 +0800
+Subject: [PATCH] Fix the console log file does not rotate
+
+- The file descriptor might be reset after the system power cycle.
+- Set the end of the file as the file size.
+---
+ log-handler.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/log-handler.c b/log-handler.c
+index 79b0f99..994d8a8 100644
+--- a/log-handler.c
++++ b/log-handler.c
+@@ -136,7 +136,7 @@ static int log_create(struct log_handler *lh)
+ 		warn("Can't open log buffer file %s", lh->log_filename);
+ 		return -1;
+ 	}
+-	pos = lseek(lh->fd, 0, SEEK_CUR);
++	pos = lseek(lh->fd, 0, SEEK_END);
+ 	if (pos < 0) {
+ 		warn("Can't query log position for file %s", lh->log_filename);
+ 		close(lh->fd);
+-- 
+2.25.1
+

meta-facebook/meta-yosemite4/recipes-phosphor/obmc-console/obmc-console_%.bbappend

@@ -0,0 +1,5 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
+
+SRC_URI += " \
+    file://0001-Fix-the-console-log-file-does-not-rotate.patch \
+"