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Date: Tue, 12 Mar 2013 08:07:44 +0100 From: "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com> To: Li Zefan <lizefan@...wei.com> Cc: linux-man <linux-man@...r.kernel.org>, Linux Containers <containers@...ts.linux-foundation.org>, lkml <linux-kernel@...r.kernel.org>, "Eric W. Biederman" <ebiederm@...ssion.com> Subject: Documenting reboot(2) changes for PID namespace in 3.9 Li, Regarding your commit 923c7538236564c46ee80c253a416705321f13e3 , I plan to apply the following patch to the reboot(2) manual page. Does it look okay to you? Thanks, Michael diff --git a/man2/reboot.2 b/man2/reboot.2 index 8347870..1c17b85 100644 --- a/man2/reboot.2 +++ b/man2/reboot.2 @@ -24,7 +24,7 @@ .\" Modified, 27 May 2004, Michael Kerrisk <mtk.manpages@...il.com> .\" Added notes on capability requirements .\" -.TH REBOOT 2 2010-10-31 "Linux" "Linux Programmer's Manual" +.TH REBOOT 2 2013-03-12 "Linux" "Linux Programmer's Manual" .SH NAME reboot \- reboot or enable/disable Ctrl-Alt-Del .SH SYNOPSIS @@ -147,6 +147,26 @@ For the i386 architecture, the additional argument does not do anything at present (2.1.122), but the type of reboot can be determined by kernel command-line arguments ("reboot=...") to be either warm or cold, and either hard or through the BIOS. +.SS Behavior inside PID namespaces +.\" commit commit 923c7538236564c46ee80c253a416705321f13e3 +Since Linux 3.9, when +.BR reboot () +is called from a PID namespace (see +.BR pid_namespaces (7)) +other than the initial PID namespace, +the effect of the call is to send a signal to the namespace "init" process. +.BR LINUX_REBOOT_CMD_RESTART +and +.BR LINUX_REBOOT_CMD_RESTART2 +cause a +.BR SIGHUP +signal to be sent. +.BR LINUX_REBOOT_CMD_POWER_OFF +and +.BR LINUX_REBOOT_CMD_HALT +cause a +.B SIGINT +signal to be sent. .SH RETURN VALUE For the values of .I cmd -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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