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GETSID(2)                     System Calls Manual                    GETSID(2)

NAME
     getsid - get session ID

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     pid_t
     getsid(pid_t pid);

DESCRIPTION
     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
     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
     getpgid(2), setsid(2), termios(4)

STANDARDS
     The getsid() function conforms to X/Open Portability Guide Issue 4,
     Version 2 ("XPG4.2").

NetBSD 10.99                     April 4, 2011                    NetBSD 10.99