mirror of
https://github.com/trapexit/mergerfs.git
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6ac7f389c5
* Start moving to string_view where possible * Rework readdir object to use atomic load/store
112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/*
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ISC License
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Copyright (c) 2017, Antonio SJ Musumeci <trapexit@spawn.link>
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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 appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#pragma once
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#include "fuse_kernel.h"
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#include "int_types.h"
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#include <string>
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namespace symlinkify
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{
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static
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inline
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bool
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can_be_symlink(const struct stat &st_,
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const s64 timeout_)
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{
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if(S_ISDIR(st_.st_mode) ||
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(st_.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH)))
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return false;
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const s64 now = ::time(NULL);
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return (((now - st_.st_mtime) > timeout_) &&
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((now - st_.st_ctime) > timeout_));
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}
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static
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inline
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bool
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can_be_symlink(const struct fuse_statx &st_,
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const s64 timeout_)
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{
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if(S_ISDIR(st_.mode) ||
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(st_.mode & (S_IWUSR|S_IWGRP|S_IWOTH)))
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return false;
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const s64 now = ::time(NULL);
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return (((now - st_.mtime.tv_sec) > timeout_) &&
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((now - st_.ctime.tv_sec) > timeout_));
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}
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static
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inline
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void
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convert(const std::string &target_,
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struct stat *st_)
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{
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st_->st_mode = (((st_->st_mode & ~S_IFMT) | S_IFLNK) | 0777);
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st_->st_size = target_.size();
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st_->st_blocks = 0;
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}
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static
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inline
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void
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convert(const std::string &target_,
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struct fuse_statx *st_)
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{
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st_->mode = (((st_->mode & ~S_IFMT) | S_IFLNK) | 0777);
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st_->size = target_.size();
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st_->blocks = 0;
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}
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static
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inline
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void
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convert_if_can_be_symlink(const std::string &target_,
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struct stat *st_,
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const s64 timeout_)
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{
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if(timeout_ < 0)
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return;
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if(!symlinkify::can_be_symlink(*st_,timeout_))
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return;
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symlinkify::convert(target_,st_);
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}
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static
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inline
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void
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convert_if_can_be_symlink(const std::string &target_,
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fuse_statx *st_,
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const s64 timeout_)
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{
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if(timeout_ < 0)
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return;
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if(!symlinkify::can_be_symlink(*st_,timeout_))
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return;
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symlinkify::convert(target_,st_);
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}
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}
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