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killpg(2) [bsd man page]

KILLPG(2)							System Calls Manual							 KILLPG(2)

NAME
killpg - send signal to a process group SYNOPSIS
killpg(pgrp, sig) int pgrp, sig; DESCRIPTION
Killpg sends the signal sig to the process group pgrp. See sigvec(2) for a list of signals. 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 sin- gle special case the continue signal SIGCONT may be sent to any process that is a descendant of the current process. RETURN VALUE
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and the global variable errno is set to indi- cate the error. ERRORS
Killpg will fail and no signal will be sent if any of the following occur: [EINVAL] Sig is not a valid signal number. [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. [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. SEE ALSO
kill(2), getpgrp(2), sigvec(2) 4th Berkeley Distribution May 14, 1986 KILLPG(2)

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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

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