|KILLPG(2)||Linux Programmer's Manual||KILLPG(2)|
NAME¶killpg - send signal to a process group
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- _BSD_SOURCE || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
DESCRIPTION¶killpg() sends the signal sig to the process group pgrp. See signal(7) for a list of signals.
RETURN VALUE¶On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
- Sig is not a valid signal number.
- The process does not have permission to send the signal to any of the target processes.
- No process can be found in the process group specified by pgrp.
- The process group was given as 0 but the sending process does not have a process group.
CONFORMING TO¶SVr4, 4.4BSD (the killpg() function call first appeared in 4BSD), POSIX.1-2001.
NOTES¶There are various differences between the permission checking in BSD-type systems and System V-type systems. See the POSIX rationale for kill(). A difference not mentioned by POSIX concerns the return value EPERM: BSD documents that no signal is sent and EPERM returned when the permission check failed for at least one target process, while POSIX documents EPERM only when the permission check failed for all target processes.
SEE ALSO¶getpgrp(2), kill(2), signal(2), capabilities(7), credentials(7)
COLOPHON¶This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.