diff options
| author | Ruiyu Ni <ruiyu.ni@intel.com> | 2016-07-11 13:56:49 +0800 |
|---|---|---|
| committer | Ruiyu Ni <ruiyu.ni@intel.com> | 2016-07-18 10:55:02 +0800 |
| commit | ffbc60a02757fe430448d7ad022d04cec133ba5d (patch) | |
| tree | 56834a829147340e06f892fa7549dccf7b11e455 /ShellPkg | |
| parent | 31e5b912b99e0fb39e81f70bc24a4be589191abb (diff) | |
| download | edk2-ffbc60a02757fe430448d7ad022d04cec133ba5d.tar.gz edk2-ffbc60a02757fe430448d7ad022d04cec133ba5d.tar.bz2 edk2-ffbc60a02757fe430448d7ad022d04cec133ba5d.zip | |
ShellPkg/ShellAddEnvVarToList: Handle memory allocation failure
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Diffstat (limited to 'ShellPkg')
| -rw-r--r-- | ShellPkg/Application/Shell/ShellEnvVar.c | 39 | ||||
| -rw-r--r-- | ShellPkg/Application/Shell/ShellEnvVar.h | 7 | ||||
| -rw-r--r-- | ShellPkg/Application/Shell/ShellProtocol.c | 30 |
3 files changed, 43 insertions, 33 deletions
diff --git a/ShellPkg/Application/Shell/ShellEnvVar.c b/ShellPkg/Application/Shell/ShellEnvVar.c index 9f87b9074f..77bf599eab 100644 --- a/ShellPkg/Application/Shell/ShellEnvVar.c +++ b/ShellPkg/Application/Shell/ShellEnvVar.c @@ -442,8 +442,11 @@ ShellFindEnvVarInList ( including the tailing CHAR_NULL
@param Atts The attributes of the variable.
+ @retval EFI_SUCCESS The environment variable was added to list successfully.
+ @retval others Some errors happened.
+
**/
-VOID
+EFI_STATUS
ShellAddEnvVarToList (
IN CONST CHAR16 *Key,
IN CONST CHAR16 *Value,
@@ -452,9 +455,16 @@ ShellAddEnvVarToList ( )
{
ENV_VAR_LIST *Node;
+ CHAR16 *LocalKey;
+ CHAR16 *LocalValue;
if (Key == NULL || Value == NULL || ValueSize == 0) {
- return;
+ return EFI_INVALID_PARAMETER;
+ }
+
+ LocalValue = AllocateCopyPool (ValueSize, Value);
+ if (LocalValue == NULL) {
+ return EFI_OUT_OF_RESOURCES;
}
//
@@ -467,10 +477,8 @@ ShellAddEnvVarToList ( if (Node->Key != NULL && StrCmp(Key, Node->Key) == 0) {
Node->Atts = Atts;
SHELL_FREE_NON_NULL(Node->Val);
- Node->Val = AllocateZeroPool (ValueSize);
- ASSERT (Node->Val != NULL);
- CopyMem(Node->Val, Value, ValueSize);
- return;
+ Node->Val = LocalValue;
+ return EFI_SUCCESS;
}
}
@@ -478,16 +486,23 @@ ShellAddEnvVarToList ( // If the environment varialbe key doesn't exist in list just insert
// a new node.
//
+ LocalKey = AllocateCopyPool (StrSize(Key), Key);
+ if (LocalKey == NULL) {
+ FreePool (LocalValue);
+ return EFI_OUT_OF_RESOURCES;
+ }
Node = (ENV_VAR_LIST*)AllocateZeroPool (sizeof(ENV_VAR_LIST));
- ASSERT (Node != NULL);
- Node->Key = AllocateCopyPool(StrSize(Key), Key);
- ASSERT (Node->Key != NULL);
- Node->Val = AllocateCopyPool(ValueSize, Value);
- ASSERT (Node->Val != NULL);
+ if (Node == NULL) {
+ FreePool (LocalKey);
+ FreePool (LocalValue);
+ return EFI_OUT_OF_RESOURCES;
+ }
+ Node->Key = LocalKey;
+ Node->Val = LocalValue;
Node->Atts = Atts;
InsertTailList(&gShellEnvVarList.Link, &Node->Link);
- return;
+ return EFI_SUCCESS;
}
/**
diff --git a/ShellPkg/Application/Shell/ShellEnvVar.h b/ShellPkg/Application/Shell/ShellEnvVar.h index 5356580759..f05ef2bd66 100644 --- a/ShellPkg/Application/Shell/ShellEnvVar.h +++ b/ShellPkg/Application/Shell/ShellEnvVar.h @@ -240,11 +240,14 @@ ShellFindEnvVarInList ( @param Key The name of the environment variable.
@param Value The value of environment variable.
@param ValueSize The size in bytes of the environment variable
- including the tailing CHAR_NELL
+ including the tailing CHAR_NULL
@param Atts The attributes of the variable.
+ @retval EFI_SUCCESS The environment variable was added to list successfully.
+ @retval others Some errors happened.
+
**/
-VOID
+EFI_STATUS
ShellAddEnvVarToList (
IN CONST CHAR16 *Key,
IN CONST CHAR16 *Value,
diff --git a/ShellPkg/Application/Shell/ShellProtocol.c b/ShellPkg/Application/Shell/ShellProtocol.c index 39b0e78b32..a95da000f5 100644 --- a/ShellPkg/Application/Shell/ShellProtocol.c +++ b/ShellPkg/Application/Shell/ShellProtocol.c @@ -2852,36 +2852,28 @@ InternalEfiShellSetEnv( )
{
EFI_STATUS Status;
- UINT32 Atts;
- Atts = 0x0;
-
if (Value == NULL || StrLen(Value) == 0) {
Status = SHELL_DELETE_ENVIRONMENT_VARIABLE(Name);
if (!EFI_ERROR(Status)) {
ShellRemvoeEnvVarFromList(Name);
}
- return Status;
} else {
SHELL_DELETE_ENVIRONMENT_VARIABLE(Name);
- if (Volatile) {
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_V(Name, StrSize(Value), Value);
- if (!EFI_ERROR(Status)) {
- Atts &= ~EFI_VARIABLE_NON_VOLATILE;
- Atts |= EFI_VARIABLE_BOOTSERVICE_ACCESS;
- ShellAddEnvVarToList(Name, Value, StrSize(Value), Atts);
+ Status = ShellAddEnvVarToList(
+ Name, Value, StrSize(Value),
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | (Volatile ? 0 : EFI_VARIABLE_NON_VOLATILE)
+ );
+ if (!EFI_ERROR (Status)) {
+ Status = Volatile
+ ? SHELL_SET_ENVIRONMENT_VARIABLE_V(Name, StrSize(Value), Value)
+ : SHELL_SET_ENVIRONMENT_VARIABLE_NV(Name, StrSize(Value), Value);
+ if (EFI_ERROR (Status)) {
+ ShellRemvoeEnvVarFromList(Name);
}
- return Status;
- } else {
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV(Name, StrSize(Value), Value);
- if (!EFI_ERROR(Status)) {
- Atts |= EFI_VARIABLE_NON_VOLATILE;
- Atts |= EFI_VARIABLE_BOOTSERVICE_ACCESS;
- ShellAddEnvVarToList(Name, Value, StrSize(Value), Atts);
- }
- return Status;
}
}
+ return Status;
}
/**
|