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Don't let VMs change engine latch cvars immediately

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If a VM increases sv_maxclients while a server is running the engine
will crash. The value should be latched until engine decides to update
the cvar; the same as when a user sets it.
This commit is contained in:
Zack Middleton 2018-01-21 03:50:43 -06:00
parent adef4e6c9e
commit 78ca670d4f
1 changed files with 20 additions and 9 deletions
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29
code/qcommon/cvar.c
View file

@ -638,18 +638,29 @@ Cvar_SetSafe
void Cvar_SetSafe( const char *var_name, const char *value ) void Cvar_SetSafe( const char *var_name, const char *value )
{ {
int flags = Cvar_Flags( var_name ); int flags = Cvar_Flags( var_name );
qboolean force = qtrue;
if((flags != CVAR_NONEXISTENT) && (flags & CVAR_PROTECTED)) if ( flags != CVAR_NONEXISTENT )
{ {
if( value ) if ( flags & CVAR_PROTECTED )
Com_Error( ERR_DROP, "Restricted source tried to set " {
"\"%s\" to \"%s\"", var_name, value ); if( value )
else Com_Error( ERR_DROP, "Restricted source tried to set "
Com_Error( ERR_DROP, "Restricted source tried to " "\"%s\" to \"%s\"", var_name, value );
"modify \"%s\"", var_name ); else
return; Com_Error( ERR_DROP, "Restricted source tried to "
"modify \"%s\"", var_name );
return;
}
// don't let VMs or server change engine latched cvars instantly
if ( ( flags & CVAR_LATCH ) && !( flags & CVAR_VM_CREATED ) )
{
force = qfalse;
}
} }
Cvar_Set( var_name, value );
Cvar_Set2 (var_name, value, force);
} }
/* /*