end up with a dump offset that's smaller than the start of the
dump device and either clobber data in preceding partitions or
try to write beyond the end of the medium (unsigned wrap).
Implement legacy behaviour to never write to the first 64KB as
that is where metadata (ie disklabels) may reside.
it possible to use this driver under ia64, sparc64 (though
there may be endianness issues with this one) and other archs.
Tested on: i386, alpha (gallatin)
from "unix" back to "local". Add some compat stuff so both
ways work for some time.
Reviewed by: phk
Approved by: imp (UPDATING)
Requested by: iedowse, lukem@netbsd.org
skipping read-only pages, which can result in valuable non-text-related
data not getting dumped, the ELF loader and the dynamic loader now mark
read-only text pages NOCORE and the coredump code only checks (primarily) for
complete inaccessibility of the page or NOCORE being set.
Certain applications which map large amounts of read-only data will
produce much larger cores. A new sysctl has been added,
debug.elf_legacy_coredump, which will revert to the old behavior.
This commit represents collaborative work by all parties involved.
The PR contains a program demonstrating the problem.
PR: kern/45994
Submitted by: "Peter Edwards" <pmedwards@eircom.net>, Archie Cobbs <archie@dellroad.org>
Reviewed by: jdp, dillon
MFC after: 7 days
But for some reason the block size is different when a different type of
tape is placed in the drive. This commit fixes that.
PR: 46209
Submitted by: Alex Wang <alex@alexwang.com>
Approved by: mjacob
_KERNEL scope from "src/sys/sys/mchain.h".
Replace each occurrence of the above in _KERNEL scope with the
appropriate macro from the set of hto(be|le)(16|32|64) and
(be|le)toh(16|32|64) from "src/sys/sys/endian.h".
Tested by: tjr
Requested by: comment marked with XXX
prototype for trm_detach and freeing all resources.
While I'm there, handle better errors in trm_attach and remove the
PCI_BASE_ADDR0 definition, since it's what PCIR_MAPS is used for.
MFC after: 3 days
that's being replaced here. This is what /etc/rc does now.
There is no NetBSD devfs, so there is no compatibility issue.
Not objected to by: FreeBSD-rc@yahoogroups.com
Approved by: re (murray)
`J' flag means that newsyslog should wait for previously started compression
jobs to complete before starting a new one for this entry. When it is used
along with the `G' flag, in the case when several logfiles match the pattern
and should be compressed, the newsyslog will compress logs one by one,
ensuring that only one compression job is running at a time.
This prevents newsyslog(8) from overloading system by starting several
compression jobs on big files simultaneously.
Sponsored by: Porta Software Ltd
MFC after: 2 weeks
so as to work correctly on 64-bit platforms.
Reported-by: Jake Burkholder <jake@locore.ca>
Sponsored by: DARPA & NAI Labs.
Approved by: Ian Dowse <iedowse@maths.tcd.ie>
resource starvation we clean-up as much of the vmspace structure as we
can when the last process using it exits. The rest of the structure
is cleaned up when it is reaped. But since exit1() decrements the ref
count it is possible for a double-free to occur if someone else, such as
the process swapout code, references and then dereferences the structure.
Additionally, the final cleanup of the structure should not occur until
the last process referencing it is reaped.
This commit solves the problem by introducing a secondary reference count,
calling 'vm_exitingcnt'. The normal reference count is decremented on exit
and vm_exitingcnt is incremented. vm_exitingcnt is decremented when the
process is reaped. When both vm_exitingcnt and vm_refcnt are 0, the
structure is freed for real.
MFC after: 3 weeks
