With signed 32-bit time_t, the type of time_t + m_ttl is unsigned int,
which results in -Werror=sign-compare. Fix this by explicitly casting
it back to time_t.
The Hurd has sin_len, just like the BSDs.
This happened to hit a clang-format bug, and we have been advised
to disable clang-format for this block of code for now.
Without using PATH_MAX :^)
To read a symlink, we can just open its file with O_NOLINK and read its
contents. To get the executable path, we could read the /proc/self/exe
link like the Linux version does; but that relies on procfs being
mounted. Instead, we could do what procfs itself does to get the path:
ask the proc server about it.
On FreeBSD and GNU/Hurd, SHM_ANON is a nice way to create anonymous
files using the usual shm_open() API. This is a lot like the fallback
shm_open() branch that follows, except we don't have to fool around
with choosing a unique name (with retrying) and unlinking the file
afterwards; it just does the right thing. Isn't this nice?
The Hurd supports sending file descriptors over local sockets using
the SCM_RIGHTS / cmsg mechanism just like the other systems. It doesn't
have anything like ucred/PEERCRED, though.
This is defined when building on GNU/Hurd, the GNU operating system with
the Hurd as its kernel (as it was designed originally, before Linux and
GNU/Linux came to be).
Also, define the corresponding part of User-Agent.
If SO_TIMESTAMP is unsupported, we won't be able to determine
kernelspace-to-userspace latency. But other than that, things should
still build and work.
(It's a separate question of what "kernelspace-to-userspace latency"
even means on a microkernel system, where the network card drivers, the
network stack, and ntpquery(1) are all running as userspace programs.)
Also, don't fail completely if settting receive timeout fails.
Absolute paths in man page links such as
```
[some link](/foo/bar)
```
Were being interpreted as relative paths when rendered in HTML. This
issue was observed in #20889 and #20041.
The fix is to make sure we don't leave any absolute paths when parsing
links. Instead we check if a directory is absolute (by checking for `/`)
and add `file://` accordingly. This turns the above link into:
```
[some link](file:///foo/bar)
```
Which does get interpreted correctly when rendered as HTML.
- fixes#20889
- fixes#20041
Before this patch, opening the Help application would raise an error.
Now all the pictures in the man pages render correctly.
There are a bunch of tests that check for time_t handling 64-bit values
properly. This makes sense, but also obviously doesn't work when time_t
is 32-bit, and causes compile-time errors. Compile these tests out in
that case.
Since there's no straightforward way to check sizeof(time_t) inside the
proprocessor, only do this when glibc's __TIMESIZE is defined.
This is defined when we're compiling against the GNU C Library, whether
on Linux or on other kernels that glibc works on. More AK_LIBC_xxxx
definitions could be potentially added in the future.
Also add AK_LIBC_GLIBC_PREREQ(), which checks for a specific glibc
version.
