ADC Home > Reference Library > Reference > Mac OS X > Mac OS X Man Pages
|
This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles. For more information about the manual page format, see the manual page for manpages(5). |
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 that is a descendant of the current process. 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 June 2, 1993 BSD |