killpg(3) [redhat man page]

KILLPG(3)						     Linux Programmer's Manual							 KILLPG(3)

NAME

       killpg - send signal to all members of a process group.

SYNOPSIS

       #include <signal.h>

       int killpg(pid_t pidgrp, int signal);

DESCRIPTION

       The  killpg()  function	causes	signal signal to be sent to all the processes in the process group pidgrp or to the processes' own process
       group if pidgrp is equal to zero.

       It is equivalent to

       kill(-pidgrp,signal);

RETURN VALUE

       The value returned is -1 on error, or 0 for success.

ERRORS

       Errors are returned in errno and can be one of the following:

       EINVAL for an invalid signal,

       ESRCH  for a process group which does not exist, and

       EPERM  if the userid of the calling process is not equal to that of the process the signal is sent to, and the userid is not  that  of  the
	      superuser.

CONFORMING TO

       ???

SEE ALSO

       kill(2), signal(2), signal(7)

GNU
								    1993-04-04								 KILLPG(3)

KILLPG(2)						      BSD System Calls Manual							 KILLPG(2)

NAME

     killpg -- send signal to a process group

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <signal.h>

     int
     killpg(pid_t pgrp, int sig);

DESCRIPTION

     The killpg() function sends the signal sig to the process group pgrp.  See sigaction(2) for a list of signals.  If pgrp is 0, killpg() sends
     the signal to the sending process's process group.

     The sending process and members of the process group must have the same effective user ID, or the sender must be the super-user.  As a single
     special case the continue signal SIGCONT may be sent to any process with the same session ID as the caller.

RETURN VALUES

     The killpg() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
     the error.

ERRORS

     The killpg() function will fail and no signal will be sent if:

     [EINVAL]		The sig argument is not a valid signal number.

     [EPERM]		The sending process is not the super-user and one or more of the target processes has an effective user ID different from
			that of the sending process.

     [ESRCH]		No process can be found in the process group specified by pgrp.

     [ESRCH]		The process group was given as 0 but the sending process does not have a process group.

LEGACY SYNOPSIS

     #include <sys/types.h>
     #include <signal.h>

     The include file <sys/types.h> is necessary.

SEE ALSO

     getpgrp(2), kill(2), sigaction(2), compat(5)

HISTORY

     The killpg() function appeared in 4.0BSD.

BSD
								 October 10, 2006							       BSD