ssh not exiting because of spawned process

Old Wolf · *nix forums Guru Joined: 20 Feb 2005 Posts: 679

I'm using "ssh" that came with Solaris 10, to run a process on a
remote host (also Solaris 10), using RSA authentication:

ssh hostname "/path/to/foo"

"foo" is a small program that spawns a process (let's call it
foo_spawn) and then exits. What I would like to happen is that
as soon as "foo" exits, the ssh session ends, and foo_spawn
remains running on the remote system.

However, what is actually happening is that the ssh stays open,
and stderr messages from foo_spawn will appear on the ssh terminal.
The ssh will not exit until foo_spawn is killed.

"ps -ef" on foo_spawn shows it as owned by PID 1 and not connected
to any terminal, although the evidence above would seem to suggest
that it is still connected to the ssh terminal somehow.

"foo" does the spawning by calling fork(), and then the forked process
calls setsid() and then parent process exits.

What's going on here?

Andrew Gabriel · *nix forums Guru Joined: 19 Feb 2005 Posts: 454

In article <1153443262.713084.11590@s13g2000cwa.googlegroups.com>,
"Old Wolf" <oldwolf@inspire.net.nz> writes:

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