Distinguish between errors and "the console title is the empty string"
when calling GetConsoleTitle. Both are signified by a return value of
zero.
No test because I couldn't think of a succinct way to programmatically
create a new console window with an empty title.
Fixes: https://github.com/nodejs/node/issues/58695
Implement `uv_tcp_keepalive_ex` function that extends
`uv_tcp_keepalive` to support `TCP_KEEPINTVL` and `TCP_KEEPCN`
socket options in addition to TCP_KEEPIDLE.
Handle out-of-memory conditions in uv_loop_init better, albeit still
not perfect: bubble up the error instead of aborting.
Also fixes a file descriptor leak on Linux (and likely other platforms)
that the new test caught; the backend epoll fd was being leaked in the
error path.
Fixes: https://github.com/libuv/libuv/issues/4755
Haiku has parallel types to stdint.h, and their APIs use these
types. In the Haiku-specific haiku.h file, it is passing an
address of a uint32_t to get_cpu_topology_info(), that expects
the other uint32:
648fa5897c/src/system/libroot/os/system_info.cpp (L187)
You get an "incompatible-pointer-types" warning in gcc if the
warnings are turned up. But if you pass the pointer to Haiku's
notion of uint32, then the warning goes away.
On some platforms (like GNU/Hurd), `getsockname` returns an empty
string for sockets in the UNIX domain. However, we do have stored the
path info in `pipe_fname` of `uv_pipe_t`, so we can try with it
if `getsockname` returns an empty string.
Use fchmod() on platforms that support it on UNIX sockets. Only fall
back to chmod() on platforms that don't (macOS and the BSDs.)
Remove the stat + chmod dance from the fallback and just call chmod
directly, because that's another source of TOCTOU issues.
Fixes: https://github.com/libuv/libuv/issues/2040
Documentation on Linux explains that nul bytes have no
special significance in abstract namespace socket names.
Avoid precluding such addresses.
Signed-off-by: Itay Bookstein <ibookstein@gmail.com>
Solaris 11.4 has Load Balancing for SO_REUSEPORT, but setting
SO_REUSEADDR disables load balancing. As per comments in
test/test-udp-reuseport.c prefer SO_REUSEPORT when available.
With these changes in place udp-reuseport testing passes. BIND (named),
which uses routing sockets which cause ENOPROTOOPT to be returned when
SO_REUSEPORT is requested, also continues to work with the change.
Notes:
- The use of getsockopt() to query if SO_REUSEPORT was available was
erroneous.
- Selectively limiting SO_REUSEPORT setting to specific types of socket
was considered but not entertained.
- Oracle will investigate if the setting of SO_REUSEADDR was
intentionally meant to prevent load balancing.
- Adding a test for routing sockets is left for future work.
On OpenBSD we do not know the cpuspeed in same cases (mostly arm64)
and the HW_CPUSPEED sysctl will return EOPNOTSUPP in that case,
which can be ignored because we still need the rest of the CPU
information.
Solaris provides sendmmsg() as of 11.3.32.
It was added at the same time as MSG_WAITFORONE.
The same is seen in Illumos guarded by __BSD_VISIBLE
Fixes: https://github.com/libuv/libuv/issues/4715
Windows provides the `ENABLE_VIRTUAL_TERMINAL_INPUT` flag for TTY input
streams as a companion flag to `ENABLE_VIRTUAL_TERMINAL_PROCESSING`,
which libuv is already setting for TTY output streams.
Setting this flag lets the terminal emulator perform some of the
processing that libuv already currently does for input events,
but most notably enables receiving control sequences that are
otherwise entirely unavailable, e.g. for bracketed paste
(which the Node.js readline implementation added basic support for
in https://github.com/nodejs/node/commit/87af913b66eab78088acfd).
libuv currently already provides translations for key events to
control sequences, i.e. what this mode is intended to provide,
but libuv does not and cannot translate all such events.
Since the control sequences differ from the ones that Windows
has chosen to standardize on, and applications may not be expecting
this change, this is opt-in for now (but ideally will be the default
behavior starting in libuv v2.x, should that ever happen).
Another downside of this change is that not all shells reset
this mode when an application exits. For example, when running a
Node.js program with this flag enabled inside of PowerShell in
Windows terminal, if the application exits while in raw TTY input mode,
neither the shell nor the terminal emulator reset this flag, rendering
the input stream unusable.
While there's general awareness of the problem that console state is
global state rather than per-process (same as on UNIX platforms),
it seems that applications like PowerShell aren't expecting to need to
unset this flag on the input stream, only its output counterpart
(e.g. 4e7942135f/src/Microsoft.PowerShell.ConsoleHost/host/msh/ConsoleHost.cs (L1156)).
Hence, `uv_tty_reset_mode()` is extended to reset the terminal
to its original state if the new mode is being used.
Refs: 87af913b66
Refs: https://github.com/microsoft/terminal/issues/4954
Extend uv_fs_utime, uv_fs_futime and uv_fs_lutime to accept NAN and
INFINITY, with NAN meaning "don't touch the timestamp" and INFINITY
meaning "set to the current timestamp."
Ugly, but it avoids having to add uv_fs_utime2, etc.
UV_FS_UTIME_NOW and UV_FS_UTIME_OMIT constants have been added to make
it more palatable.
Fixes: https://github.com/libuv/libuv/issues/4665
On macOS, when calling `spawn`, the child process's stdio buffer
size is 8192 bytes. This is due to the AF_UNIX socket buffer size
being 8192 bytes in the XNU kernel.
When large amounts of data are transferred through the child
process's stdio, this buffer size can cause performance issues.
To mitigate this, the buffer size has been increased to 65536
bytes, aligning it with the behavior on Linux.
The CreateProcess API on Windows is still not longPathAware,
even if the process itself is. So, if the cwd used for CreateProcess
is too long, then the call fails with a 'INVALID_DIRECTORY' error.
To deal with this, check the length of the cwd and shorten it if it
is longer than MAX_PATH.
Said symbols are not by default available on Windows Server 2016 but
libuv can still use them when
api-ms-win-core-processthreads-l1-1-3.dll is present.
Fixes: https://github.com/libuv/libuv/issues/4677
Add a version of uv_udp_try_send that can send multiple datagrams.
Uses sendmmsg(2) on platforms that support it (Linux, FreeBSD, macOS),
falls back to a regular sendmsg(2) loop elsewhere.
This work was sponsored by ISC, the Internet Systems Consortium.
Shuffle around and DRY the sendmsg logic in preparation for
uv_udp_try_send2(). NFC barring bugs.
This work was sponsored by ISC, the Internet Systems Consortium.
io_uring support was default-disabled because of numerous kernel bugs
but those are all in the sqpoll (file i/o) parts of io_uring.
Batching of epoll_ctl calls through io_uring works fine, is a nice
optimization, and is therefore unconditionally enabled again.
The UV_USE_IO_URING environment variable now only affects sqpoll, and
only when the UV_LOOP_ENABLE_IO_URING_SQPOLL event loop flag is set.
Fixes: https://github.com/libuv/libuv/issues/4616
Libuv looks for "Processor" in /proc/cpuinfo but it's been reported
that on at least some Raspberry Pi models, it's called "model name".
Look for both.
Fixes: https://github.com/nodejs/node/issues/56105
`uv_thread_setname()` sets the name of the current thread. Different
platforms define different limits on the max number of characters
a thread name can be: Linux, IBMi (16), macOS (64), Windows (32767),
and NetBSD (32), etc. `uv_thread_setname()` will truncate it in case
`name` is larger than the limit of the platform.
`uv_thread_getname()` gets the name of the thread specified by `tid`.
The thread name is copied into the buffer pointed to by `name`. The
`size` parameter specifies the size of the buffer pointed to by `name`.
The buffer should be large enough to hold the name of the thread plus
the trailing NUL, or it will be truncated to fit.
This commit introduces the `uv_thread_detach` for thread detaching,
allowing threads to be detached state on both UNIX and Windows platforms.
Signed-off-by: Juan José Arboleda <soyjuanarbol@gmail.com>
For any API that takes a buffer and size pointer, check both pointers
and the pointed-to size and return UV_EINVAL in case of error.
Example:
```
int uv_foo(char* buffer, size_t* size) {
if (buffer == NULL || size == NULL || *size == 0)
return UV_EINVAL;
...
}
```
In order to "peek" the necessary size for dynamic allocation, the
following pattern can be used:
```
char *buf;
char scratch[1];
size_t len = sizeof(scratch);
int r;
r = uv_foo(scratch, &len);
assert(r == UV_ENOBUFS);
buf = malloc(len);
r = uv_foo(buf, &len);
...
```
The compile-time detection check from commit 7b75935 ("kqueue: use
EVFILT_USER for async if available") was not being used, breaking
numerous operating systems. This commit hopefully unbreaks them.
Fixes; https://github.com/libuv/libuv/issues/4608
Signed-off-by: Jeffrey H. Johnson <trnsz@pobox.com>
uv_wtf8_length_as_utf16() checks if codepoints are > 0xFFFF (to see if
it should be encoded as a surrogate pair), therefore uv_wtf8_to_utf16()
should too. Instead it checked > 0x1000. Harmonize the checks.
Fixes: https://github.com/nodejs/node/issues/55914
Establishes a user event for kqueue to eliminate the overhead
of the pipe and the system call read(2) per wakeup event.
Relands commit 27134547ff using VSCode merge, since it shows the
conflict is just on the order of #ifdef calls.
Co-authored-by: Andy Pan <panjf2000@gmail.com>
It seemed incorrect to map a segfault to EACCES, since posix would typically
map this to EFAULT. The ERROR_BUFFER_OVERFLOW is literally "the filename is too
long", and is not typically an invalid parameter in posix.
Test originally added in #1060 to test the API, not the value.
This reverts commit e5cb1d3d3d.
Reason: bisecting says it breaks dnstap.
Also revert commit 27134547ff ("kqueue: use EVFILT_USER for async if
available") because otherwise the first commit doesn't revert cleanly,
with enough conflicts in src/unix/async.c that I'm not comfortable
fixing those up manually.
Fixes: https://github.com/libuv/libuv/issues/4584
Make sure `UV__SOLARIS_11_4` is not set for `smartOS`/`illumOS`. In our
codebase is used only twice:
- Detect correct implementation of `SO_REUSEPORT`, which is not even
implemented on `illumOS`.
- Detect the time unit used for the TCP keepalive options. If set to
`0`, which was the case for `illumOS`, it chose milliseconds, which is
not correct for `illumOS` either as it uses seconds.
The implementation of IPC pipe in libuv on Windows does not properly support
async reading. This means we cannot set the more parameter without likely
causing hangs. Sorry this is yet another followup to #4511.
Fixes#4548
After commit 18266a6969, it changed to return `ENOTDIR`, which makes it
consistent with other platforms but it also can be considered a breaking
change.
Route ftruncate() system calls through io_uring instead of the thread
pool when the kernel is new enough to support it (linux >= 6.9).
This commit harmonizes how libuv checks if the kernel is new enough.
Some ops were checking against `uv__kernel_version()` directly while
others stored the result of the version check as a feature flag.
Because the kernel version is cached, and because it is more direct
than a feature flag, I opted for the former approach.
Introduced in Linux 6.6, it tells the kernel to omit the sqarray from
the ring buffer.
Libuv initalizes the array once to an identity mapping and then forgets
about it, so not only does it save a little memory (ca. 1 KiB per ring)
but it also makes things more efficient kernel-side because it removes
a level of indirection.
Libuv stores the `struct termios` for use inside uv_tty_reset_mode().
Node.js uses said function to restore the tty to its original mode
on SIGINT or SIGTERM, when there is no opportunity to shut down the
process normally.
Track uv_tty_t handle closing, otherwise we might be trying to use a
stale termios.
The current solution is not ideal because there can be multiple handles
that refer to the same tty/pty and, for various reasons, we can't really
determine when we close the last handle. The last handle may not even be
inside the current process.
Still, all things considered, it's probably (hopefully!) an improvement
over the status quo.
Refs: https://github.com/libuv/libuv/issues/4398
Yet another followup to #4511. The functional/legacy/increment_spec.lua
test failed most of the time without this, and passes consistently with
it. It seemed unexpected this code path gets reached (perhaps imply
that the user wrote zero bytes?), but good to fix of course.
Fixes commit 58dfb6c89b from a few days ago. DWORD_PTR is 32 bits on
x86 Windows. Use the right bit count when checking the population count.
Interestingly enough, it manifested itself as double counting online
processors, presumably because the compiler emits a ROR instead of SHR.
Fixes: https://github.com/libuv/libuv/issues/4524
Use GetProcessAffinityMask() to estimate the available parallelism.
Before this commit, it simply used the number of available CPUs.
Fixes: https://github.com/libuv/libuv/issues/4520
In #4470, I accidentally copied the bug from unix, where calling
uv_stream_set_blocking can cause the whole process to hang on a read.
However, unlike unix, where libuv attempts to set the O_NONBLOCK flag in
uv_pipe_open (as long as the handle never gets passed to uv_spawn), the
NT kernel is not capable of enabling OVERLAPPED operation later (but
fortunately, it also cannot disable it later too).
This implementation might be good to copy to unix (using FIONREAD) to
address the same bug that happens there if the user has called uv_spawn
or uv_stream_set_non_blocking on this handle in the past.
