Is File In Use

In a thread on DelphiPraxis there was a question that comes up several times a year. However, this time I could remember that there is actually an COM API that can solve the problem. The question was about how to find out which process has a lock on a file. The main problem was, in [...]

Setting Folder Security

This article describes some ways how to set the security on a folder using JWSCL. Usually, we want to add some rights for a particular user to a folder so she gets access. I can say that is a heck of work to do with WinAPI. But still with JWSCL we need to consider some [...]

This article is about how to retrieve the owner of a file. If you are experienced with some of the WinAPI security function this can be pretty easy. There are some problems that needs to be addressed though. The first one is the size of the security items like the SID name of the owner. [...]

Setting file security with JWSCL

Sometimes it is necessary to change the security settings of a file or folder for getting or denying write access. With JWSCL this task is made very easy. However there are some pitfalls to avoid. The following code will also be available in the example section of the source code. The application gets a file [...]

How to use a Security Attribute structure Part #2

This discussion continues How to use a SecurityAttribute structure. Last time we used the SecurityAttribute parameter in CreateFile to change the security descriptor of the newly created file. However this approach did not add inherited access control elements from the parent folder. We are about to change that. Filesystem and Registry-key inheritance is implemented since [...]

Are you interested in security attributes of a file? If yes, you should read Raymond Chen’s article about how permissions are handled when moving a file. Cite: Inherited permissions on an object are established when it is created. Once the object has been created, you can change the permissions of the parent and it won’t [...]

Many developers know that mysterious parameter some WinAPI function offer to use. What I am talking about is a parameter called lpSecurityAttributes. The documentation states that it allows to change the security descriptor of the desired element. The most known function is CreateFile which I want to use here. It allows to create a file [...]

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