unixexec [OPTION] [PATH] COMMAND ...
unixexec: a minimal, UCSPI inetd for Unix sockets
unixexec attaches the stdin/stdout of a command to a Unix socket:
-
immediately exec(3)'s the command: the data is not proxied via another process
-
does not multiplex access to a socket
$ unixexec /tmp/sock cat
$ nc -U /tmp/sock
An echo server allowing 3 concurrent connections:
service/
├── echo1
│ └── run
├── echo2
│ └── run
└── echo3
└── run
- service/echo1/run
#!/bin/sh
exec unixsock /tmp/echo1.socket cat- service/echo2/run
#!/bin/sh
exec unixsock /tmp/echo2.socket cat- service/echo3/run
#!/bin/sh
exec unixsock /tmp/echo3.socket catThen run:
svscan service
make
#### static executable using musl
./musl-make
-U, --no-unlink : do not unlink the socket before binding
-v, --verbose : write additional messages to stderr
-h, --help : usage summary
PROTO : protocol, always set to UNIX
UNIXLOCALPATH : socket path
UNIXLOCALUID : user ID of unixexec process
UNIXLOCALUSER : user name of unixexec process
UNIXLOCALGID : group ID of unixexec process
UNIXLOCALPID : process ID of unixexec process
UNIXREMOTEPID : process ID of connecting process (support: Linux, OpenBSD)
UNIXREMOTEEUID : user ID of connecting process
UNIXREMOTEUSER : user name of connecting process
UNIXREMOTEEGID : group ID of connecting process