1) make sure Mach servers will not work on data beyond the end of the
request message buffer.
2) make sure that on copying out the reply message buffer, we will not
leak kernel data located after the buffer.
3) make sure that the server will not overwrite memory beyond the end
of the reply message buffer. That check is the responsability of the
server, there is just a DIAGNOSTIC test to check everything is in
good shape. All currently implemented servers in NetBSD have been
modified to check for this condition
While we are here, build the mach services table (formerly in mach_namemap.c)
and the services prototypes automatically from mach_services.master, just
as this is done for system calls.
The next step would be to fold the message formats in the mach_services.master
file, but this tends to be difficult, as some messages are quite long and
complex.
* if loading from cdrom, assume we're performing an install and
fix up bootpath/kernel to load the proper install kernel.
* maximum filename length in volume header is eight characters.
Change boot.elf to ip2xboot, boot.ip32 to ip3xboot, and boot
to aoutboot (which matches kernel naming scheme as well).
copyin() or copyout().
uvm_useracc() tells us whether the mapping permissions allow access to
the desired part of an address space, and many callers assume that
this is the same as knowing whether an attempt to access that part of
the address space will succeed. however, access to user space can
fail for reasons other than insufficient permission, most notably that
paging in any non-resident data can fail due to i/o errors. most of
the callers of uvm_useracc() make the above incorrect assumption. the
rest are all misguided optimizations, which optimize for the case
where an operation will fail. we'd rather optimize for operations
succeeding, in which case we should just attempt the access and handle
failures due to insufficient permissions the same way we handle i/o
errors. since there appear to be no good uses of uvm_useracc(), we'll
just remove it.
(1) split the single list of pages allocated to a pool into three lists:
completely full, partially full, and completely empty.
there is no longer any need to traverse any list looking for a
certain type of page.
(2) replace the 8-element hash table for out-of-page page headers
with a splay tree.
these two changes (together with the recent enhancements to the wait code)
give us linear scaling for a fork+exit microbenchmark.
mbuf chains which are recycled (e.g., ICMP reflection, loopback
interface). A consensus was reached that such recycled packets should
behave (more-or-less) the same way if a new chain had been allocated
and the contents copied to that chain.
Some packet tags may in future be marked as "persistent" (e.g., for
mandatory access controls) and should persist across such deletion.
NetBSD as yet hos no persistent tags, so m_tag_delete_nonpersistent()
just deletes all tags. This should not be relied upon.
This should fix PR 23418 which was also reported by Thomas Klausner and
Ian Fry (who also provided core dumps for analysis - thanks!).
Also g/c sa_yieldcall since it's now safe to put LWPs back into the cache.
Also return stacks in failure case.
of the sibling list so that find_stopped_child can be optimised to avoid
traversing the entire sibling list - helps when a process has a lot of
children.
- Modify locking in pfind() and pgfind() to that the caller can rely on the
result being valid, allow caller to request that zombies be findable.
- Rename pfind() to p_find() to ensure we break binary compatibility.
- Remove svr4_pfind since p_find willnow do the job.
- Modify some of the SMP locking of the proc lists - signals are still stuffed.
Welcome to 1.6ZF
(it only allowed to boot an nfs /netbsd automatically)
To make it work for people who can't tell the DHCP server to pass
the right kernel file to pxeboot, without losing flexibility for
people who can, do the following:
Use the filename given by the DHCP server if it contains a ":". A ":"
was already used to seperate filesystem and filename, so we don't
lose anything. Otoh, a path to pxeboot usually doesn't contain a ":",
so it should still work if we got the old pxeboot filename again.
Add screen types suitable for PAL displays, and fix typos
in older screen type names; reported by Gunther Nikl.
amidisplay.4:
Document the new screen types and add some misc information.
test with "${MKxxx}" = "no" instead of -z "${MKxxx}"
Ignore errors when running pwd -P. (GNU coreutils incorrectly complains)
Both problems pointed out in private email from Christian Limpach.
- process pending queries in EcUnlock() to close a race window.
now there's no need to do polling for EcQuery().
- reorder inline functions and other prototypes so that
the formers can get needed prototypes.
- add missing prototypes.
tsutsui