NAME    [Toc]    [Back]

     getsid - get session ID

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <unistd.h>

     pid_t
     getsid(pid_t pid);

DESCRIPTION    [Toc]    [Back]

     The getsid function returns the session ID of the process specified by
     pid.  If pid is 0, the session ID of the calling process is returned.
     The session ID is defined as the process group ID of the process that is
     the session leader.

ERRORS    [Toc]    [Back]

     If an error occurs, getsid returns -1 and the global variable errno is
     set to indicate the error, as follows:

     [ESRCH]            No process can be found corresponding to that specified
 by pid.

SEE ALSO    [Toc]    [Back]

     getpgid(2), termios(4)

STANDARDS    [Toc]    [Back]

     The getsid() function conforms to X/Open Portability Guide Issue 4.2
     (``XPG4.2'').

BSD                            February 13, 1998                           BSD