This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface

       None.

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard
       for Information  Technology  --  Portable  Operating  System  Interface  (POSIX),  The  Open  Group  Base
       Specifications  Issue  7, 2018 Edition, Copyright (C) 2018 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 .

       Any  typographical  or formatting errors that appear in this page are most likely to have been introduced
       during  the  conversion  of  the  source  files  to  man  page  format.  To  report  such   errors,   see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                                   2017                                SCHED_GETPARAM(3POSIX)

       The sched_getparam() function shall return the scheduling parameters of a process specified by pid in the
       sched_param structure pointed to by param.

       If  a  process  specified  by  pid  exists,  and  if  the  calling process has permission, the scheduling
       parameters for the process whose process ID is equal to pid shall be returned.

       If pid is zero, the scheduling parameters for the calling process shall be returned. The behavior of  the
       sched_getparam() function is unspecified if the value of pid is negative.

       The sched_getparam() function shall fail if:

       EPERM  The  requesting  process  does  not  have  permission  to  obtain the scheduling parameters of the
              specified process.

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

       Thefollowingsectionsareinformative.

       None.

       None.

       sched_getparam — get scheduling parameters (REALTIME)

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.

       None.

       Upon   successful   completion,  the  sched_getparam()  function  shall  return  zero.  If  the  call  to
       sched_getparam() is unsuccessful, the function shall return a value of -1 and set errno to  indicate  the
       error.

sched_getscheduler(), sched_setparam(), sched_setscheduler()

       The Base Definitions volume of POSIX.1‐2017, <sched.h>

       #include <sched.h>

       int sched_getparam(pid_t pid, struct sched_param *param);