Hi, Darek, cat /proc/[pid]/net/tcp is handled by http://lxr.free-electrons.com/source/net/ipv4/tcp_ipv4.c#L2230 and cat /proc/[pid]/net/tcp6 is handled by: http://lxr.free-electrons.com/source/net/ipv6/tcp_ipv6.c#L1782 Hope it helps! Regards, Rami Rosen http://ramirose.wix.com/ramirosen On 25 January 2016 at 15:00, dariusz ostolski <dariusz.ostolski@xxxxxxxxx> wrote: > Hello, > > > 2016-01-22 10:21 GMT+01:00 Rami Rosen <roszenrami@xxxxxxxxx>: >>>I've found >>>functions for global files, maybe they are the same). I'd like to >>>check when these files where introduced (from what kernel version they >>>are available) >> >> Support for kernel network namesapces was added with kernel 2.6.29. >> It is basically based on adding an object called "net_ns" to the >> process descriptor, and instance of struct net, which represents a >> network namesapce. You can think of such object as representing the >> network state of a process, including all stats, sockets, devices, >> tables, and so on. This net_ns is a member of an object called >> nsproxy, which includes pointers to 4 other namesapces (uts, mnt, pid >> and ipc). >> >> >>>and there is no information about network >>>namespaces at all (google, stackoverflow, man pages, kernel docs) >> > > Thank You for your answer it gave me some clues so I was not > completely blind when I checked kernel source code. > Nevertheless, excuse me for not being precise enough, what I meant is > that I couldn't find any docs about those 2 specific files: > 1. /proc/[pid]/net/tcp > 2. /proc/[pid]/net/tcp6 > > And how is their content related to net namespaces? > > I want to read connections for a process that is in a separate net > namespace but I'd like to avoid switching to that namespace, > my experiments showed that reading /proc/[pid]/net/tcp|tcp6 should be > enough, but I'd like to find confirmation of that > either in official docs (which I couldnt find) or in kernel source > code (I failed there too). > > Again thank You in advance for your help. > > Regards, > Darek _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
