KILLPG(2)                 FreeBSD System Calls Manual                KILLPG(2)

NAME
     killpg - send signal to a process group

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/types.h>
     #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 must be able to kill() at least one process in the
     receiving process group.

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.

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

     [EPERM]            kill() returns EPERM for all processes in the process
                        group.

SEE ALSO
     getpgrp(2), kill(2), sigaction(2)

HISTORY
     The killpg() function appeared in 4.0BSD.

FreeBSD 13.1-RELEASE-p6         March 15, 2012         FreeBSD 13.1-RELEASE-p6