On Wed, 2007-07-25 at 11:43 +0900, NAHieu wrote: > Hi Avishay, > > On 7/24/07, Avishay Traeger <atraeger@xxxxxxxxxxxxx> wrote: > > On Tue, 2007-07-24 at 19:12 +0900, NAHieu wrote: > > > Hello, > > > > > > Given a file pointer (struct file *), what is the most effecient way > > > to find out the pid of the process that manages this file pointer? > > > > > > I look into the file structure, but still havent seen any way to do that. > > > > > > There is one solution: traverse all the processes in the system, and > > > compare my file pointer with their list of files, but that seems so > > > ineffective, so I dont like that. > > > > > > Thank you, > > > Hieu > > > > I haven't tested this, but what about file->f_owner.pid? > > > > Interesting, but that points to "struct pid", not pid. And I dont see > how I can extract pid from it. > > Any idea? > > Thanks, > Hieu I think you want 'nr' in struct pid. Try that. There is also a rather long comment above the struct that could prove useful to you. Avishay -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
