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9 Commits

Author SHA1 Message Date
jilles
ea79716e67 reaper: Make REAPER_KILL_SUBTREE actually work. 
MFC after:	2 weeks
 2016-12-14 22:49:20 +00:00
kib
ac3931b229 Add the foundation copyrights to procctl kernel sources. 
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
 2016-09-23 12:32:20 +00:00
kib
262f303ffc Add PROC_TRAPCAP procctl(2) controls and global sysctl kern.trap_enocap. 
Both can be used to cause processes in capability mode to receive
SIGTRAP when ENOTCAPABLE or ECAPMODE errors are returned from
syscalls.

Idea by:	emaste
Reviewed by:	oshogbo (previous version), emaste
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D7965
 2016-09-21 08:23:33 +00:00
kib
fd746f6246 If process becomes reaper (procctl(PROC_REAP_ACQUIRE)) while already 
having some children, the children' reaper is not reset to the parent.
This allows for the situation where reaper has children but not
descendands and the too strict asserts in the reap_status() fire.

Remove the wrong asserts, add some clarification for the situation to
the procctl(2) REAP_STATUS.

Reported and tested by:	feld
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
 2015-08-20 22:44:26 +00:00
kib
76636ae592 Reparenting done by debugger attach can leave reaper without direct 
children.  Handle the situation instead asserting that it is
impossible.

Reported and tested by:	emaste
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
 2015-02-15 08:44:30 +00:00
kib
105218e4a7 Return with the process locked, caller expects p still locked after 
the call.

Reported and tested by:	bapt
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
 2015-02-15 08:43:19 +00:00
kib
aa0ac99391 Add procctl(2) PROC_TRACE_CTL command to enable or disable debugger 
attachment to the process.  Note that the command is not intended to
be a security measure, rather it is an obfuscation feature,
implemented for parity with other operating systems.

Discussed with:	jilles, rwatson
Man page fixes by:	rwatson
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
 2015-01-18 15:13:11 +00:00
kib
57bd8c99cc Add missed break. 
CID:	1258587
Sponsored by:	The FreeBSD Foundation
MFC after:	20 days
 2014-12-16 09:49:07 +00:00
kib
c014fd46ec Add a facility for non-init process to declare itself the reaper of 
the orphaned descendants.  Base of the API is modelled after the same
feature from the DragonFlyBSD.

Requested by:	bapt
Reviewed by:	jilles (previous version)
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
 2014-12-15 12:01:42 +00:00