(where n is a decimal integer in the range [0 .. SIGRTMAX-SIGRTMIN].
As usual a leading "sig" is ignored and the strings are case independent.
Some implementations do not name the real time signals, and using
labels like RTMIN+3 can be the only way they can be manipulated,
so allow that technique (we still return the RTnn names on the inverse
translation though).
Because this is used by both kill(1) and sh(1) the kill and trap
commands both gain access to the new notation (when !SMALL).
Three ways to call:
getrandom(p, n, 0) Blocks at boot until full entropy.
Returns up to n bytes at p; guarantees
up to 256 bytes even if interrupted
after blocking. getrandom(0,0,0)
serves as an entropy barrier: return
only after system has full entropy.
getrandom(p, n, GRND_INSECURE) Never blocks. Guarantees up to 256
bytes even if interrupted. Equivalent
to /dev/urandom. Safe only after
successful getrandom(...,0),
getrandom(...,GRND_RANDOM), or read
from /dev/random.
getrandom(p, n, GRND_RANDOM) May block at any time. Returns up to n
bytes at p, but no guarantees about how
many -- may return as short as 1 byte.
Equivalent to /dev/random. Legacy.
Provided only for source compatibility
with Linux.
Can also use flags|GRND_NONBLOCK to fail with EWOULDBLOCK/EAGAIN
without producing any output instead of blocking.
- The combination GRND_INSECURE|GRND_NONBLOCK is the same as
GRND_INSECURE, since GRND_INSECURE never blocks anyway.
- The combinations GRND_INSECURE|GRND_RANDOM and
GRND_INSECURE|GRND_RANDOM|GRND_NONBLOCK are nonsensical and fail
with EINVAL.
As proposed on tech-userlevel, tech-crypto, tech-security, and
tech-kern, and subsequently adopted by core (minus the getentropy part
of the proposal, because other operating systems and participants in
the discussion couldn't come to an agreement about getentropy and
blocking semantics):
https://mail-index.netbsd.org/tech-userlevel/2020/05/02/msg012333.html
return that which poor behavior for the user, so return 0 instead.
We could document ~0 to be an error, but that would deviate from the
Linux behavior which is not desirable. Noted by Poul-Henning Kamp
When support for negative nrows/ncols was added, one s/ncols/maxx/ was
missed so we ended up passing negative (i.e. huge unsigned) length
when hashing the line contents.
Reported by Naman Jain in PR lib/55484
X/Open Curses says in the documentation for newpad():
Automatic refreshes of pads (e.g., from scrolling or echoing of
input) do not occur.
And in the documentation for get*():
If the current or specified window is not a pad, and it has been
moved or modified since the last refresh operation, then it will be
refreshed before another character is read.
From Michael Forney in PR lib/55457
Make default (wide) and non-wide behavior match. If the character
argument has (only) attributes set, use them with the default line
character.
In the wide case don't do the fallback in hline - it just calls
hline_set that needs to do it anyway. Fix the latter to check the
wcwidth of the right character and avoid division by zero.
Otherwise the ABSENT_NUMERIC(-1) or CANCELLED_NUMERIC(-2) will be converted
incorrectly to size_t and then down to uint16/32_t.
Picked up by DIAGNOSTIC builds.
Thanks to Michael Forney for the fix for PR lib/52293.
thread it is trying to awake. The thread could exit the condvar and then
reinsert itself at the head of the list with a new waiter behind it. It's
likely possible to fix this in a way that's wait-free but for now just fix
the bug.
Replace strncpy(3) with the safer strlcpy(3) and adjust the code.
Error was reported when build.sh was run with MKLIBCSANITIZER=yes flag.
Reviewed by: kamil@, christos@
pthread_t, so there's less chance of bad things happening if someone calls
(for example) pthread_cond_broadcast() from a signal handler.
- Remove all the deferred waiter handling except for the one case that really
matters which is transferring waiters from condvar -> mutex on wakeup, and
do that by splicing the condvar's waiters onto the mutex.
- Remove the mutex waiters bit as it's another complication that's not
strictly needed.
==> Provide a much more complete set of setters and getters for different
value types in the prop_array_util(3) and prop_dictionary_util(3)
functions.
==> Overhaul the prop_data(3), prop_number(3), and prop_string(3) APIs
to be easier to use and less awkwardly named, Deprecate the old
awkward names, and produce link-time warnings when they are referenced.
==> Deprecate mutable prop_data(3) and prop_string(3) objects. The old
APIs that support them still exist, but will now produce link-time
warnings when used.
==> When the new prop_string(3) API is used, strings are internally
de-duplicated as a memory footprint optimization.
==> Provide a rich set of bounds-checked gettter functions in and a
corresponding set of convenience setters in the prop_number(3) API.
==> Add a new prop_bool_value(3) function that is equivalent to
prop_bool_true(3), but aligned with the new "value" routines in
prop_data(3), prop_string(3), and prop_number(3).
jakllsch