Smbios: don't try to scan memory multiple times

CarterLi · CarterLi · commit 519dae9462ed · 2025-02-15T19:50:34.000+08:00
diff --git a/src/util/smbiosHelper.c b/src/util/smbiosHelper.c
@@ -138,6 +138,7 @@ const FFSmbiosHeaderTable* ffGetSmbiosHeaderTable()
 
     if (buffer.chars == NULL)
     {
+        ffStrbufInit(&buffer);
         #ifndef __HAIKU__
         #ifdef __linux__
         if (!ffAppendFileBuffer("/sys/firmware/dmi/tables/DMI", &buffer))
@@ -289,6 +290,9 @@ const FFSmbiosHeaderTable* ffGetSmbiosHeaderTable()
         }
     }
 
+    if (buffer.length == 0)
+        return NULL;
+
     return &table;
 }
 #elif defined(_WIN32)

Original file line number	Diff line number	Diff line change
`@@ -138,6 +138,7 @@ const FFSmbiosHeaderTable* ffGetSmbiosHeaderTable()`
`138`	`138`
`139`	`139`	`if (buffer.chars == NULL)`
`140`	`140`	`{`
	`141`	`+ ffStrbufInit(&buffer);`
`141`	`142`	`#ifndef __HAIKU__`
`142`	`143`	`#ifdef __linux__`
`143`	`144`	`if (!ffAppendFileBuffer("/sys/firmware/dmi/tables/DMI", &buffer))`
`@@ -289,6 +290,9 @@ const FFSmbiosHeaderTable* ffGetSmbiosHeaderTable()`
`289`	`290`	`}`
`290`	`291`	`}`
`291`	`292`
	`293`	`+ if (buffer.length == 0)`
	`294`	`+ return NULL;`
	`295`	`+`
`292`	`296`	`return &table;`
`293`	`297`	`}`
`294`	`298`	`#elif defined(_WIN32)`