On 26 April 2014 20:42, Al Viro <[email protected]> wrote: > On Sat, Apr 26, 2014 at 07:54:47PM +0300, Dmitry Kasatkin wrote: >> On 26 April 2014 16:56, Al Viro <[email protected]> wrote: >> > On Sat, Apr 26, 2014 at 11:58:45AM +0300, Dmitry Kasatkin wrote: >> > >> >> Conflict with Apparmor means with Ubuntu. >> >> >> >> But answering to your early question.. >> >> IMA does not want permission denied when measuring and re-measuring files. >> >> may_open() is doing that job before. >> >> >> >> We need quickly introduce kernel_read without LSM checks... >> > >> > *snarl* >> > >> > What we need quickly is to introduce you to a textbook or two. As the >> > matter of fact, in this case even wikipedia might suffice... >> > >> >> Hopefully we have you who were introduced to a textbook or two about relevant >> subject and able kindly help us with the solution instead of telling >> me this crap... > > See the discussion of that very topic (required modifications of vfs_read()) > upthread. And Eric has a very good point about the usefulness of > understanding > the basics of IO-related system calls in Unix for anybody who does any > kind of development related to keeping track of file contents modifications, > etc. It's *not* about some arcane knowledge of VFS internals (which also > might > come handy when sticking hooks into said internals); it's about being familiar > with the semantics of read(2) and related concepts.
Great. Teaching discussions are over? So how we will solve the problem reported in this thread? -- Thanks, Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
