diff options
| -rw-r--r-- | ShellPkg/Application/Shell/Shell.c | 29 | ||||
| -rw-r--r-- | ShellPkg/Application/Shell/Shell.inf | 25 | ||||
| -rw-r--r-- | ShellPkg/ShellPkg.dec | 3 |
3 files changed, 44 insertions, 13 deletions
diff --git a/ShellPkg/Application/Shell/Shell.c b/ShellPkg/Application/Shell/Shell.c index 36063227a2..97b8c8d6fb 100644 --- a/ShellPkg/Application/Shell/Shell.c +++ b/ShellPkg/Application/Shell/Shell.c @@ -1288,13 +1288,40 @@ AddLineToCommandHistory( )
{
BUFFER_LIST *Node;
+ BUFFER_LIST *Walker;
+ UINT16 MaxHistoryCmdCount;
+ UINT16 Count;
+
+ Count = 0;
+ MaxHistoryCmdCount = PcdGet16(PcdShellMaxHistoryCommandCount);
+
+ if (MaxHistoryCmdCount == 0) {
+ return ;
+ }
+
Node = AllocateZeroPool(sizeof(BUFFER_LIST));
ASSERT(Node != NULL);
Node->Buffer = AllocateCopyPool(StrSize(Buffer), Buffer);
ASSERT(Node->Buffer != NULL);
- InsertTailList(&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Node->Link);
+ for ( Walker = (BUFFER_LIST*)GetFirstNode(&ShellInfoObject.ViewingSettings.CommandHistory.Link)
+ ; !IsNull(&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Walker->Link)
+ ; Walker = (BUFFER_LIST*)GetNextNode(&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Walker->Link)
+ ){
+ Count++;
+ }
+ if (Count < MaxHistoryCmdCount){
+ InsertTailList(&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Node->Link);
+ } else {
+ Walker = (BUFFER_LIST*)GetFirstNode(&ShellInfoObject.ViewingSettings.CommandHistory.Link);
+ RemoveEntryList(&Walker->Link);
+ if (Walker->Buffer != NULL) {
+ FreePool(Walker->Buffer);
+ }
+ FreePool(Walker);
+ InsertTailList(&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Node->Link);
+ }
}
/**
diff --git a/ShellPkg/Application/Shell/Shell.inf b/ShellPkg/Application/Shell/Shell.inf index 09aecf717b..253bfdbb22 100644 --- a/ShellPkg/Application/Shell/Shell.inf +++ b/ShellPkg/Application/Shell/Shell.inf @@ -95,18 +95,19 @@ gEfiDevicePathProtocolGuid ## CONSUMES
[Pcd]
- gEfiShellPkgTokenSpaceGuid.PcdShellSupportLevel ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellSupportOldProtocols ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellRequireHiiPlatform ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellSupportFrameworkHii ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellPageBreakDefault ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellInsertModeDefault ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellScreenLogCount ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellMapNameLength ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellPrintBufferSize ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellForceConsole ## CONSUMES
- gEfiShellPkgTokenSpaceGuid.PcdShellSupplier ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellSupportLevel ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellSupportOldProtocols ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellRequireHiiPlatform ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellSupportFrameworkHii ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellPageBreakDefault ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellInsertModeDefault ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellScreenLogCount ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellMapNameLength ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellPrintBufferSize ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellForceConsole ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellSupplier ## CONSUMES
+ gEfiShellPkgTokenSpaceGuid.PcdShellMaxHistoryCommandCount ## CONSUMES
[BuildOptions.AARCH64]
# The tiny code model used by AARCH64 only supports binaries of up to 1 MB in
diff --git a/ShellPkg/ShellPkg.dec b/ShellPkg/ShellPkg.dec index b2f632601e..76a2b7db97 100644 --- a/ShellPkg/ShellPkg.dec +++ b/ShellPkg/ShellPkg.dec @@ -101,6 +101,9 @@ ## This determines how many bytes are read out of files at a time for file operations (type, copy, etc...)
gEfiShellPkgTokenSpaceGuid.PcdShellFileOperationSize|0x1000|UINT32|0x0000000A
+
+ ## This determines the max count of history commands
+ gEfiShellPkgTokenSpaceGuid.PcdShellMaxHistoryCommandCount|0x0020|UINT16|0x00000014
[PcdsFixedAtBuild, PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]
## This flag is used to control the protocols produced by the shell
|