Hey, guys, I have a question about a difference between openssh 4.3 and 5.3. I have plenty of servers with RHEL5 and RHEL6. Most of RHEL5 servers have openssh-server version 4.3p2-72.el5_6.3 (kernel 2.6.39-100.7.1uek) And RHEL6 servers have 5.3p1-111.el6 (kernel 3.8.13-35.el6uek.x86_64) So there is the difference in assigning stdin and stdout for ssh connections. Openssh 4.3 assigns socket (I assume this socket points to /dev/log but not really sure, I've got it from strace), and openssh 5.3 assigns pipes. $ ssh root@rhel6 '/bin/ls -la /proc/self/fd' total 0 dr-x------ 2 root root 0 Oct 9 00:26 . dr-xr-xr-x 8 root root 0 Oct 9 00:26 .. lr-x------ 1 root root 64 Oct 9 00:26 0 -> pipe:[3818769145] l-wx------ 1 root root 64 Oct 9 00:26 1 -> pipe:[3818769146] l-wx------ 1 root root 64 Oct 9 00:26 2 -> pipe:[3818769147] lr-x------ 1 root root 64 Oct 9 00:26 3 -> /proc/26794/fd $ ssh root@rhel6 '/bin/ls -la /proc/self/fd' total 0 dr-x------ 2 root root 0 Oct 9 00:26 . dr-xr-xr-x 8 root root 0 Oct 9 00:26 .. lrwx------ 1 root root 64 Oct 9 00:26 0 -> socket:[3010813704] lrwx------ 1 root root 64 Oct 9 00:26 1 -> socket:[3010813704] lrwx------ 1 root root 64 Oct 9 00:26 2 -> socket:[3010813706] lr-x------ 1 root root 64 Oct 9 00:26 3 -> /proc/12193/fd I'm wondering is it expected behaviour? Is there way to assign pipes in openssh 4.3 too? Looked through code but I'm not very familiar with C programming. PS Some daemon libs think that if stdin is socket then daemon is running from inetd and it is causing some troubles. PSS Sorry for broken english :( _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
