Re: Out of tree module using LSM

[Jan Engelhardt]

On Nov 29 2007 11:27, Jon Masters wrote:
>
>They (virus protection folks) generally think they want to intercept
>various system calls, such as open() and block until they have performed
>a scan operation on the file. I explained the mmap issue [...]

If open and close was everything, then that would be wonderful. You
could only wonder how many false positives scanners could bring up if
they checked every write() for signatures - not to mention
performance bogdown.

>they just want to scan files and take some action if a file is
>"bad". That's it really.
>
struct security->dentry_open sounds like the candidate, together
with relayfs with submits filenames to userspace.

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