ccdstrategy() -> ccdstart() -> ccdbuffer() from softint context.
Allocating the buffer with PR_WAITOK here is forbidden.
Change ccdstart() / ccdbuffer() to report failure back to caller and
pass PR_WAITOK / PR_NOWAIT as an additional argument.
Call ccdstart() with PR_NOPWAIT from ccdstrategy() and on error defer
to the kthread. Call ccdstart() with PR_WAITOK from kthread so requests
from kthread always succeed to allocate the buffers.
Remove the (non working) throttling on low memory as it is no longer needed.
Fixes PR kern/58043 "kernel crash in assert_sleepable() in -current,
dk(4) driver?"
copy, since we don't have m4 available. Use pax to install it because
using the Makefile needs more stuff available (nbsed) which we have not
built yet.
The C standards do not specify a fixed type for an array subscript, it
just has to be an integer type. Previously, query 4 fired for the
ubiquitous expression 'ptr[sz]' when sz had type 'size_t'.
The test platform_ilp32_long is unaffected by this change, as the
integer constant 0x80000000 has type 'unsigned int', while size_t is
'unsigned long' on those platforms, and even though the types 'unsigned
int' and 'unsigned long' have the same value space, there's still a
conversion, at least for now.
portion of a Tigard debug board and changes the permissions of the
appropriate /dev/ugenN.* nodes to allow access without superuser
permissions, suitable for using e.g. openocd with the device.
This example can be easily modified to support other generic USB devices
that have user-space drivers where running as the superuser is not desired.
for USB serial interfaces, regardless of where the interface is connected
or the order of enumeration. This requires the USB device to have a
"serialnumber" to function. Examples:
- uftdi serial adapter with two ports:
/dev/tty-uftdi-FT64S4YP-1 -> /dev/ttyU0
/dev/tty-uftdi-FT64S4YP-2 -> /dev/ttyU1
- uslsa serial adapter:
/dev/tty-uslsa-01E7ABCC -> /dev/ttyU4
This allows something like the following in /etc/remote:
sun3:dv=/dev/tty-uftdi-FT64S4YP-1:br#9600:pa=none:dc:
That path will always be stable regardless of which /dev/ttyU* node is
actually assigned when the serial adapter is plugged in.
that the device unit number does not necessarily match the /dev/ugenN.xx
unit number (N). If you ONLY have ugen devices, it happens to work out
and devpubd scripts can be extremely naive. If you ONLY have ugenif
devices, it also happens to work out, but your devpubd scripts have to
slightly more informed. If you have a mix of ugen AND ugenif devices,
though, you're pretty much out of luck.
So, this change adds a "ugen-unit" device property which devpubd scripts
can query to determine which /dev/ugenN.xx nodes a given ugen or ugenif
device is using.
boundary when filling rectangles, especially annoying when we draw whitespaces
As a workaround we draw all rectangles less than 50 pixels wide by drawing
a 50 pixel rectangle into off-screen memory to the right of the visible fb and
then copy the portion we want. Keeps track of the colour and size of the
off-screen rectangle so we can avoid redrawing it whenever possible.
At the point where tools/Makefile is loaded, TOOLDIR doesn't have to
exist yet, it will be created later. Remove the redundant quotes from
the .error messages.
Looks like the nfs server does enforce that after all, in spite of
the rather oblique commentary in the BUGS section about export
options being tied to local mount point options with which they must
be noncontradictory.
And there's no reason in principle it shouldn't enforce this -- it
just need to block various file system _operations_, rather than the
subtree issue where the criteria for evaluating whether operations
are allowed on particular _file handles_ are too painful to
contemplate.
PR misc/58063
The exports(5) man page is full of walls of turgid prose that should
be itemized lists with syntax templates, and I'm itching to rewrite
it, but let's get the security-relevant warnings out of the way
first.
PR misc/58063
thorpej