bin/70536: reboot -dp tries to dump when powering off
Giorgos Keramidas
keramida at bytemobile.com
Mon Aug 16 05:40:11 PDT 2004
>Number: 70536
>Category: bin
>Synopsis: reboot -dp tries to dump when powering off
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Mon Aug 16 12:40:10 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator: Giorgos Keramidas
>Release: FreeBSD 5.2-CURRENT i386
>Organization:
>Environment:
System: FreeBSD orion.daedalusnetworks.priv 5.2-CURRENT \
FreeBSD 5.2-CURRENT #1: Wed Aug 11 20:24:38 EEST 2004 \
root at orion.daedalusnetworks.priv:/usr/obj/usr/src/sys/ORION i386
>Description:
The reboot command when called as "halt" does not allow kernel dumps.
The message printed is:
halt: cannot dump (-d) when halting; must reboot instead
The same command allows the user to specify both -d and -p options
though, which attempt to generate a kernel dump and then promptly power
off the machine using ACPI.
I've marked this as a change-request since it's not a real *bug*; it's
more something that seems "natural" to me and I have in my local src
tree for a while now.
>How-To-Repeat:
# halt -d
# reboot -dp
>Fix:
The following minor patch makes RB_HALT and RB_POWEROFF equivalent
regarding kernel dumps.
%%%
Index: reboot.c
===================================================================
RCS file: /home/ncvs/src/sbin/reboot/reboot.c,v
retrieving revision 1.20
diff -u -r1.20 reboot.c
--- reboot.c 9 Apr 2004 19:58:35 -0000 1.20
+++ reboot.c 16 Aug 2004 12:25:16 -0000
@@ -108,6 +108,8 @@
if ((howto & (RB_DUMP | RB_HALT)) == (RB_DUMP | RB_HALT))
errx(1, "cannot dump (-d) when halting; must reboot instead");
+ if ((howto & (RB_DUMP | RB_POWEROFF)) == (RB_DUMP | RB_POWEROFF))
+ errx(1, "cannot dump (-d) when powering off; must reboot instead");
if (geteuid()) {
errno = EPERM;
err(1, NULL);
%%%
>Release-Note:
>Audit-Trail:
>Unformatted:
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