GETSID(2-SVR4)      RISC/os Reference Manual       GETSID(2-SVR4)



NAME
     getsid - get session ID

SYNOPSIS
     #include <sys/types.h>

     pidt getsid(pidt pid);

DESCRIPTION
     The function getsid returns the session ID of the process
     whose process ID is equal to pid.  If pid is equal to
     (pid_t)0, getsid returns the session ID of the calling pro-
     cess.

RETURN VALUE
     Upon successful completion, the function getsid returns the
     session ID of the specified process; otherwise, it returns a
     value of (pid_t)-1 and sets errno to indicate an error.

ERRORS
     Under the following conditions, the function getsid fails
     and sets errno to:

     EPERM     if the process  whose process ID is equal to pid
               is not in the same session as the calling process,
               and the implementation does not allow access to
               the session ID of that process from the calling
               process.

     ESRCH     if there is no process with a process ID equal to
               pid.

SEE ALSO
     exec(2), fork(2), getpid(2), setpgid(2), setsid(2).





















                        Printed 11/19/92                   Page 1