From fdcfa9e7ff6eb31fe77cd4032d202bb8f1a50f37 Mon Sep 17 00:00:00 2001
From: roly <Rolyli.Li@luxshare-ict.com>
Date: Thu, 21 Nov 2024 18:23:00 +0800
Subject: [PATCH] ipmi cmd support set sel time utc offset

---
 storagehandler.cpp | 63 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/storagehandler.cpp b/storagehandler.cpp
index 4fef019..67d76ea 100644
--- a/storagehandler.cpp
+++ b/storagehandler.cpp
@@ -696,6 +696,63 @@ ipmi::RspType<int16_t> ipmiStorageGetSelTimeUtcOffset()
     return ipmi::responseSuccess(timeEquation);
 }
 
+/** @brief implements the Set SEL timezone command
+ *  @returns IPMI completion code plus response data
+ *   -current timezone
+ */
+ipmi::RspType<> ipmiStorageSetSelTimeUtcOffset(int16_t UTCOffset)
+{
+    int hrs = 0;
+    char ZoneInfoFile[128] = {0}, file[32] = {0};
+    static constexpr int16_t SEL_UTC_MAX_RANGE = 1440;
+    static constexpr int16_t SEL_UTC_MIN_RANGE = -1440;
+    static constexpr int16_t UNSPECIFIED_UTC_OFFSET = 0x7ff;
+    constexpr auto LOCALTIME = "/etc/localtime";
+
+    if (((UTCOffset > SEL_UTC_MAX_RANGE ) || (UTCOffset < SEL_UTC_MIN_RANGE) || (UTCOffset % 60 != 0)) && UTCOffset != UNSPECIFIED_UTC_OFFSET)
+    {
+        return ipmi::responseParmOutOfRange();
+    }
+
+    hrs = UTCOffset / 60;
+    if(UTCOffset == UNSPECIFIED_UTC_OFFSET)
+    {
+        hrs = 0;
+    }
+
+    if (0 > UTCOffset)
+    {
+        if (snprintf(file,sizeof(file), "GMT+%d", -hrs) >= (long int)sizeof(file))
+        {
+            return ipmi::responseUnspecifiedError();
+        }
+    }
+    else
+    {
+        if (snprintf(file,sizeof(file), "GMT-%d", hrs) >= (long int)sizeof(file))
+        {
+            return ipmi::responseUnspecifiedError();
+        }
+    }
+
+    if (snprintf (ZoneInfoFile, sizeof(ZoneInfoFile), "%s/%s", "/usr/share/zoneinfo/Etc", file) >= (long int)sizeof(ZoneInfoFile))
+    {
+        return ipmi::responseUnspecifiedError();
+    }
+
+    if((0 > unlink(LOCALTIME)) && errno != ENOENT)
+    {
+        return ipmi::responseUnspecifiedError();
+    }
+
+    if(symlink(ZoneInfoFile, LOCALTIME) < 0)
+    {
+        return ipmi::responseUnspecifiedError();
+    }
+
+    return ipmi::responseSuccess();
+}
+
 /** @brief implements the reserve SEL command
  *  @returns IPMI completion code plus response data
  *   - SEL reservation ID.
@@ -952,6 +1009,12 @@ void register_netfn_storage_functions()
                           ipmi::Privilege::User,
                           ipmiStorageGetSelTimeUtcOffset);
 
+    // <Set SEL Timezone>
+    ipmi::registerHandler(ipmi::prioOpenBmcBase, ipmi::netFnStorage,
+                          ipmi::storage::cmdSetSelTimeUtcOffset,
+                          ipmi::Privilege::Operator,
+                          ipmiStorageSetSelTimeUtcOffset);
+
     // <Get SEL Entry>
     ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_GET_SEL_ENTRY, NULL,
                            getSELEntry, PRIVILEGE_USER);
-- 
2.25.1