Both SNDCTL_DSP_SPEED and SNDCTL_DSP_CHANNELS support a special value
0 to "query the configured value without changing it". In our case,
this actually means setting and querying the hardware rate.
I don't know if OSSv3 or FreeBSD or other implementations also do this.
But it seems safe and sensible to support.
Previously, the individual IfStates contained redundant information,
which was apparent in the documentation. This led to expressions like
(state > ELSE_ACTIVE) that are hard to read since the reader has to look
up the order of the enum.
To avoid this, the state of an '.if' block is now encoded using a bitset,
encoding the properties of each state directly. This replaces the
previous (state > ELSE_ACTIVE) with !(state & IFS_ACTIVE), which is
easier to understand.
No change in behavior.
For curdir and an explicit .OBJDIR target, we allow for
the directory to be read-only.
During InitObjdir we otherwise default to requiring objdir to be
writable - this can be controlled by env variable
MAKE_OBJDIR_CHECK_WRITABLE
Add unit-tests/objdir-writable
Reviewed by: christos rillig
restore non-desctructive guarantee of ip_mforward() mbuf
argument. This avoids generation invalid UDP checksums
on multicast packets in ip_output().
XXX the root cause of the misguided fix in 2008 should be
XXX investigated
The constant MAXIF was not a maximum but an initial capacity. Inline it
to remove the misleading name. Likewise, MAXIF_BUMP was an unnecessary
and wrong name.
Rename the enum since it only describes a single state, not multiple.
Rename the stack of states since it describes multiple states, not one.
Add markers where to add the missing error messages for unknown
directives or extraneous cond, such as in ".else cond" or ".endif cond".
otherwise specified the kernel config file. Arbitary numbers are
20,000 files for 16GB RAM or more and 10,000 files for 1GB RAM or
more.
TODO: Adjust this and other values totally dynamically.
Some derived versions of NetBSD's make set .MAKE.SAVE_DOLLARS to no. In
these versions, running the tests would fail. Therefore better set
.MAKE.SAVE_DOLLARS to yes explicitly as far as necessary.
Suggested by sjg.
