The OpenNET Project / Index page

[ новости /+++ | форум | wiki | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

rexec (3)
  • rexec (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
  • rexec (3) ( Solaris man: Библиотечные вызовы )
  • rexec (3) ( FreeBSD man: Библиотечные вызовы )
  • >> rexec (3) ( Linux man: Библиотечные вызовы )
  •  

    NAME

    rexec - return stream to a remote command
     
    

    SYNOPSIS

    
    int rexec(char **ahost, int inport, char *user, 
              char *passwd, char *cmd, int *fd2p);
    
     

    DESCRIPTION

    This interface is obsoleted by rcmd(3).

    The rexec() function looks up the host *ahost using gethostbyname(3), 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; the call getservbyname(exec, tcp) (see getservent(3)) will return a pointer to a structure that contains the necessary port. The protocol for connection is described in detail in rexecd(8).

    If the connection succeeds, a socket in the Internet domain 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 an 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 Unix signal numbers, to be forwarded to the process group of the command. The diagnostic information returned does not include remote authorization failure, as the secondary connection is set up after authorization has been verified. 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.  

    CONFORMING TO

    Not in POSIX.1-2001. Present on the BSDs, Solaris, and many other systems. The rexec() function appeared in 4.2BSD.  

    BUGS

    The rexec() function sends the unencrypted password across the network.

    The underlying service is considered a big security hole and therefore not enabled on many sites, see rexecd(8) for explanations.  

    SEE ALSO

    rcmd(3), rexecd(8)  

    COLOPHON

    This page is part of release 3.14 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    CONFORMING TO
    BUGS
    SEE ALSO
    COLOPHON


    Поиск по тексту MAN-ов: 




    Спонсоры:
    PostgresPro
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2022 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру