mirror of
https://github.com/matrix-construct/construct
synced 2024-11-01 03:18:54 +01:00
59 lines
1.2 KiB
C++
59 lines
1.2 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
decltype(ircd::sys::log)
|
|
ircd::sys::log
|
|
{
|
|
"sys"
|
|
};
|
|
|
|
ircd::string_view
|
|
ircd::sys::get(const mutable_buffer &out,
|
|
const string_view &relpath)
|
|
try
|
|
{
|
|
thread_local char buf[1024];
|
|
string_view path(relpath);
|
|
path = lstrip(relpath, "/sys/"_sv); // tolerate any errant /sys/ prefix
|
|
path = strlcpy(buf, "/sys/"_sv);
|
|
path = strlcat(buf, relpath);
|
|
|
|
fs::fd::opts fdopts;
|
|
fdopts.errlog = false;
|
|
const fs::fd fd
|
|
{
|
|
path, fdopts
|
|
};
|
|
|
|
string_view ret
|
|
{
|
|
data(out), size_t(sys::call(::read, fd, data(out), size(out)))
|
|
};
|
|
|
|
ret = rstrip(ret, '\n');
|
|
ret = rstrip(ret, ' ');
|
|
return ret;
|
|
}
|
|
catch(const ctx::interrupted &)
|
|
{
|
|
throw;
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
if constexpr((false))
|
|
log::derror
|
|
{
|
|
log, "sysfs query `%s' :%s",
|
|
relpath,
|
|
e.what(),
|
|
};
|
|
|
|
return {};
|
|
}
|