when there is no memory available to do so. Use the uvnode's strategy
routine to retrieve data from the device, rather than always using pread().
Add a buffer header flag that specifies external management of the buffer's
data area.
All of this in support of a new cleaner, which is not included in this commit.
(fdp->fd_lastfile - i) against fd_knlistsize. Otherwise we can
call knote_fdclose() on a file descriptor that doesn't have a knote.
This issue explains random panics I have had on process exit over the
past few years.
but amd64, it just returns 0, doing nothing.
For amd64, it implements vsyscalls through cheating: if the faulting
address is in the vsyscall area (which is statically known on Linux/amd64),
and the intruction pointer is too, it must have been a vsyscall. In that
case, retrieve the return address from the user stack, fix up %rip and
%rsp, and just execute the normal system call. It will return as if
the vsyscall has been executed.
I'm just committing the auto-host.h changes as I'm going to add this to a
pullup ticket. Maybe mknative should be run against the branches on the
build machine?
Fixes PR/30251
New features:
- Add a veriexec_report() routine to make most reporting consistent and
remove some common code.
- Add 'strict' mode that controls how veriexec behaves.
- Add sysctl knobs:
o kern.veriexec.verbose controls verbosity levels. Value: 0, 1.
o kern.veriexec.strict controls strict level. Values: 0, 1, 2. See
documentation in sysctl(3) for details.
o kern.veriexec.algorithms returns a string with a space separated
list of supported hashing algorithms in veriexec.
- Updated documentation in man pages for sysctl(3) and sysctl(8).
Bug fixes:
- veriexec_removechk(): Code cleanup + handle FINGERPRINT_NOTEVAL
correctly.
- exec_script(): Don't pass 0 as flag when executing a script; use the
defined VERIEXEC_INDIRECT - which is 1. Makes indirect execution
enforcement work.
- Fix some printing formats and types..
so BUS_DMASYNC_POSTREAD should follow a device->memory transfer (like for
the rx packet data.
Also, it would be good to do a BUS_DMASYNC_PREWRITE to ensure that packet
data is flushed to memory before the chip tries to transmit data.
Tested on a PowerPC system.
netmask value of 0xffffffff (INADDR_NONE). Fix by using inet_aton(3).
Note it was possible to specify the same mask as the dotted quad
255.255.255.255 because of a later call to gethostbyname(3).
[From FreeBSD]
to open(). Previously only one call to open() was allowed.
This change should allow some Linux derived programs to work unaltered.
XXX This isn't really possible to implement correctly in a simple way.
So this implementation is incorrect: It is not until device has been closed
by both the reader and writer that it is possible to open it at all again.
event not to be sent when one is needed. Fixing this would require
one hypercall per packet, instead of one per NB_XMIT_PAGES_BATCH pages.
It's not worth it, so always send an event at the end of xennetback_ifstart()
- there is no callback mechanism to notify us when a guest has handled
packets we sent. If we stop transmitting because the ring is full or we're
out of pages when the ifq is also full, nothing will call
xennetback_ifstart() again and transmit is stalled. Abuse the watchdog
to kick the transmit queue once second after an out of ressources
condition.
perseant