mirror of
https://github.com/trapexit/mergerfs.git
synced 2024-11-29 20:13:57 +08:00
134 lines
3.3 KiB
C++
134 lines
3.3 KiB
C++
/*
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The MIT License (MIT)
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Copyright (c) 2014 Antonio SJ Musumeci <trapexit@spawn.link>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include <fuse.h>
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#include <string>
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#include <set>
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#include <vector>
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#include <errno.h>
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#include <dirent.h>
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#include "readdir.hpp"
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#include "config.hpp"
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#include "ugid.hpp"
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#include "fs.hpp"
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using std::string;
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using std::vector;
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using std::set;
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using std::pair;
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using mergerfs::readdir::FileData;
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#define NO_OFFSET 0
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static
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int
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_readdir(const vector<string> &srcmounts,
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const string dirname,
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void *buf,
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const fuse_fill_dir_t filler)
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{
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set<string> found;
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for(vector<string>::const_iterator
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iter = srcmounts.begin(), enditer = srcmounts.end();
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iter != enditer;
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++iter)
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{
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DIR *dh;
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string basepath;
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basepath = fs::make_path(*iter,dirname);
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dh = ::opendir(basepath.c_str());
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if(!dh)
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continue;
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for(struct dirent *de = ::readdir(dh); de != NULL; de = ::readdir(dh))
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{
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string d_name(de->d_name);
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if(found.insert(d_name).second == false)
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continue;
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filler(buf,de->d_name,NULL,NO_OFFSET);
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}
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::closedir(dh);
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}
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if(found.empty())
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return -ENOENT;
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return 0;
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}
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static
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int
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stat_vector_filler(void *buf,
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const char *name,
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const struct stat *stbuf,
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off_t off)
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{
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vector<FileData> *stats = (vector<FileData>*)buf;
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stats->push_back(FileData(name,*stbuf));
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return 0;
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}
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namespace mergerfs
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{
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namespace readdir
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{
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int
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readdir(const vector<string> &srcmounts,
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const string dirname,
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vector<FileData> &stats)
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{
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return _readdir(srcmounts,
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dirname,
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&stats,
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stat_vector_filler);
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}
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int
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readdir(const char *fusepath,
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void *buf,
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fuse_fill_dir_t filler,
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off_t offset,
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struct fuse_file_info *fi)
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{
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const ugid::SetResetGuard ugid;
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const config::Config &config = config::get();
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return _readdir(config.srcmounts,
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fusepath,
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buf,
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filler);
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}
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}
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}
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