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| author |   deraadt <deraadt@openbsd.org> | 1998-07-14 19:51:11 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 1998-07-14 19:51:11 +0000 |
| commit | 79ab4e23687278f44a73badefeedd20c41c1c735 (patch) | |
| tree | ff365b9a40f89199b60ef55a6c801335506ade40 /lib | |
| parent | fix exit codes, adding X_STARTUP; jkoshy@freebsd (diff) | |
| download | wireguard-openbsd-79ab4e23687278f44a73badefeedd20c41c1c735.tar.xz wireguard-openbsd-79ab4e23687278f44a73badefeedd20c41c1c735.zip | |
document setuid/setgid restrictions
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/sys/kill.2 | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/lib/libc/sys/kill.2 b/lib/libc/sys/kill.2 index a32a4c9979e..ddd45a632fb 100644 --- a/lib/libc/sys/kill.2 +++ b/lib/libc/sys/kill.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: kill.2,v 1.3 1998/07/06 18:27:44 deraadt Exp $ +.\" $OpenBSD: kill.2,v 1.4 1998/07/14 19:51:11 deraadt Exp $ .\" $NetBSD: kill.2,v 1.7 1995/02/27 12:33:53 cgd Exp $ .\" .\" Copyright (c) 1980, 1991, 1993 @@ -91,6 +91,21 @@ with the same uid as the user excluding the process sending the signal. No error is returned if any process could be signaled. .El .Pp +Setuid and setgid processes are dealt with slightly differently. For +the non-root user, to prevent attacks against such processes, some signal +deliveries are not permitted and return the error EPERM. +The following signals are allowed through to this class of processes: +.Em SIGKILL , +.Em SIGINT , +.Em SIGTERM , +.Em SIGSTOP , +.Em SIGTTIN , +.Em SIGTTOU , +.Em SIGTSTP , +.Em SIGHUP , +.Em SIGUSR1 , +.Em SIGUSR2 . +.Pp For compatibility with System V, if the process number is negative but not -1, the signal is sent to all processes whose process group ID |