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getsid (3)
  • getsid (2) ( Solaris man: Системные вызовы )
  • getsid (2) ( FreeBSD man: Системные вызовы )
  • getsid (2) ( Русские man: Системные вызовы )
  • getsid (2) ( Linux man: Системные вызовы )
  • >> getsid (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    getsid - get the process group ID of a session leader
     
    

    SYNOPSIS

    #include <unistd.h>

    pid_t getsid(pid_t pid);
     

    DESCRIPTION

    The getsid() function shall obtain the process group ID of the process that is the session leader of the process specified by pid. If pid is (pid_t)0, it specifies the calling process.  

    RETURN VALUE

    Upon successful completion, getsid() shall return the process group ID of the session leader of the specified process. Otherwise, it shall return (pid_t)-1 and set errno to indicate the error.  

    ERRORS

    The getsid() function shall fail if:

    EPERM
    The process specified by pid is not in the same session as the calling process, and the implementation does not allow access to the process group ID of the session leader of that process from the calling process.
    ESRCH
    There is no process with a process ID equal to pid.

    The following sections are informative.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    None.  

    RATIONALE

    None.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    exec() , fork() , getpid() , getpgid() , setpgid() , setsid() , the Base Definitions volume of IEEE Std 1003.1-2001, <unistd.h>  

    COPYRIGHT

    Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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