rexec(3x)
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rexec Subroutine
return stream to a remote command
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SYNTAX
rem = rexec(ahost, inport, user, passwd, cmd, fd2p);
char **ahost;
ushort inport;
char *user, *passwd, *cmd;
int *fd2p;
DESCRIPTION
Rexec looks up the host *ahost using gethostbyname(3N), returning
-1 if the host does not exist. Otherwise *ahost is set to the
standard name of the host. If a username and password are both
specified, then these are used to authenticate to the foreign
host; otherwise the environment and then the user's .netrc file
in his home directory are searched for appropriate information.
If all this fails, the user is prompted for the information.
The port inport specifies which well-known DARPA Internet port to
use for the connection; it will normally be the value returned
from the call ``getservbyname("exec", "tcp")'' (see
getservent(3N)). The protocol for connection is described in
detail in rexecd(1M).
If the call succeeds, a socket of type SOCK_STREAM is returned to
the caller, and given to the remote command as stdin and stdout.
If fd2p is non-zero, then a auxiliary channel to a control
process will be setup, and a descriptor for it will be placed in
*fd2p. The control process will return diagnostic output from
the command (unit 2) on this channel, and will also accept bytes
on this channel as being DG/UX system signal numbers, to be
forwarded to the process group of the command. If fd2p is 0,
then the stderr (unit 2 of the remote command) will be made the
same as the stdout and no provision is made for sending arbitrary
signals to the remote process, although you may be able to get
its attention by using out-of-band data.
SEE ALSO
rcmd(3X), rexecd(1M)
DG/UX 4.00 Page 1
Licensed material--property of copyright holder(s)
rexec(3x)
BUGS
There is no way to specify options to the socket call which rexec
makes.
DG/UX 4.00 Page 2
Licensed material--property of copyright holder(s)