diff options
| author | Qiu Shumin <shumin.qiu@intel.com> | 2015-12-24 08:14:51 +0000 |
|---|---|---|
| committer | shenshushi <shenshushi@Edk2> | 2015-12-24 08:14:51 +0000 |
| commit | 14810d6b644d367d4f195b3e953145a27493538c (patch) | |
| tree | 39802ab71844e9013dc269e5417ff3a330fb88b7 /ShellPkg/Application | |
| parent | a4f138a412b95b6db8f3109fbce744ecf186ff50 (diff) | |
| download | edk2-14810d6b644d367d4f195b3e953145a27493538c.tar.gz edk2-14810d6b644d367d4f195b3e953145a27493538c.tar.bz2 edk2-14810d6b644d367d4f195b3e953145a27493538c.zip | |
ShellPkg: Fix memory leak when running Shell script.
When we run following script in Shell:
"
for %a run (1 200)
echo %a
memmap
endfor
"
We may find memory leak in system. This patch free buffer in 'BufferToFreeList' to avoid this issue.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <shumin.qiu@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19521 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ShellPkg/Application')
| -rw-r--r-- | ShellPkg/Application/Shell/Shell.c | 38 | ||||
| -rw-r--r-- | ShellPkg/Application/Shell/Shell.h | 23 |
2 files changed, 61 insertions, 0 deletions
diff --git a/ShellPkg/Application/Shell/Shell.c b/ShellPkg/Application/Shell/Shell.c index 97b8c8d6fb..465f4f3974 100644 --- a/ShellPkg/Application/Shell/Shell.c +++ b/ShellPkg/Application/Shell/Shell.c @@ -1276,6 +1276,36 @@ AddBufferToFreeList( return (Buffer);
}
+
+/**
+ Create a new buffer list and stores the old one to OldBufferList
+
+ @param OldBufferList The temporary list head used to store the nodes in BufferToFreeList.
+**/
+VOID
+SaveBufferList (
+ OUT LIST_ENTRY *OldBufferList
+ )
+{
+ CopyMem (OldBufferList, &ShellInfoObject.BufferToFreeList.Link, sizeof (LIST_ENTRY));
+ InitializeListHead (&ShellInfoObject.BufferToFreeList.Link);
+}
+
+/**
+ Restore previous nodes into BufferToFreeList .
+
+ @param OldBufferList The temporary list head used to store the nodes in BufferToFreeList.
+**/
+VOID
+RestoreBufferList (
+ IN OUT LIST_ENTRY *OldBufferList
+ )
+{
+ FreeBufferList (&ShellInfoObject.BufferToFreeList);
+ CopyMem (&ShellInfoObject.BufferToFreeList.Link, OldBufferList, sizeof (LIST_ENTRY));
+}
+
+
/**
Add a buffer to the Line History List
@@ -2661,6 +2691,7 @@ RunScriptFileHandle ( CONST CHAR16 *CurDir;
UINTN LineCount;
CHAR16 LeString[50];
+ LIST_ENTRY OldBufferList;
ASSERT(!ShellCommandGetScriptExit());
@@ -2763,6 +2794,8 @@ RunScriptFileHandle ( PrintBuffSize/sizeof(CHAR16) - 1
);
+ SaveBufferList(&OldBufferList);
+
//
// NULL out comments
//
@@ -2897,15 +2930,19 @@ RunScriptFileHandle ( ShellCommandRegisterExit(FALSE, 0);
Status = EFI_SUCCESS;
+ RestoreBufferList(&OldBufferList);
break;
}
if (ShellGetExecutionBreakFlag()) {
+ RestoreBufferList(&OldBufferList);
break;
}
if (EFI_ERROR(Status)) {
+ RestoreBufferList(&OldBufferList);
break;
}
if (ShellCommandGetExit()) {
+ RestoreBufferList(&OldBufferList);
break;
}
}
@@ -2924,6 +2961,7 @@ RunScriptFileHandle ( NewScriptFile->CurrentCommand->Reset = TRUE;
}
}
+ RestoreBufferList(&OldBufferList);
}
diff --git a/ShellPkg/Application/Shell/Shell.h b/ShellPkg/Application/Shell/Shell.h index 57263204e3..351b94188e 100644 --- a/ShellPkg/Application/Shell/Shell.h +++ b/ShellPkg/Application/Shell/Shell.h @@ -382,5 +382,28 @@ TrimSpaces( IN CHAR16 **String
);
+/**
+
+ Create a new buffer list and stores the old one to OldBufferList
+
+ @param OldBufferList The temporary list head used to store the nodes in BufferToFreeList.
+**/
+VOID
+SaveBufferList (
+ OUT LIST_ENTRY *OldBufferList
+ );
+
+/**
+ Restore previous nodes into BufferToFreeList .
+
+ @param OldBufferList The temporary list head used to store the nodes in BufferToFreeList.
+**/
+VOID
+RestoreBufferList (
+ IN OUT LIST_ENTRY *OldBufferList
+ );
+
+
+
#endif //_SHELL_INTERNAL_HEADER_
|