mirror of
https://github.com/matrix-construct/construct
synced 2024-06-11 14:38:57 +02:00
74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
// The Construct
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//
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// Copyright (C) The Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#include <RB_INC_SYS_SYSMACROS_H
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#ifdef __linux__
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ircd::string_view
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ircd::fs::dev::sysfs(const mutable_buffer &out,
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const ulong &id,
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const string_view &relpath)
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{
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const string_view path{fmt::sprintf
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{
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path_scratch, "/sys/dev/block/%s/%s",
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sysfs_id(name_scratch, id),
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relpath
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}};
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fs::read_opts opts;
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opts.aio = false;
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return fs::read(path, out, opts);
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}
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#else
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ircd::string_view
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ircd::fs::dev::sysfs(const mutable_buffer &out,
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const ulong &id,
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const string_view &relpath)
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{
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throw panic
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{
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"sysfs(5) is not available."
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};
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}
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#endif
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ircd::string_view
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ircd::fs::dev::sysfs_id(const mutable_buffer &out,
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const ulong &id)
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{
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return sysfs_id(out, dev::id(id));
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}
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ircd::string_view
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ircd::fs::dev::sysfs_id(const mutable_buffer &out,
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const major_minor &id)
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{
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return fmt::sprintf
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{
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out, "%lu:%lu", id.first, id.second
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};
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}
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ulong
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ircd::fs::dev::id(const major_minor &id)
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{
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return makedev(id.first, id.second);
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}
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ircd::fs::dev::major_minor
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ircd::fs::dev::id(const ulong &id)
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{
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return
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{
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major(id), minor(id)
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};
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}
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