getsid(2) - NetBSD Manual Pages

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GETSID(2)                 NetBSD 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 speci-
                        fied 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 10.1                      April 4, 2011                     NetBSD 10.1