mirror of https://github.com/trapexit/mergerfs.git
Antonio SJ Musumeci
4 years ago
14 changed files with 474 additions and 134 deletions
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79README.md
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177man/mergerfs.1
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3src/config.cpp
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2src/config.hpp
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37src/config_inodecalc.cpp
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31src/config_inodecalc.hpp
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164src/fs_inode.cpp
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41src/fs_inode.hpp
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9src/fuse_fgetattr.cpp
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2src/fuse_getattr.cpp
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17src/fuse_readdir_linux.cpp
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23src/fuse_readdir_plus_linux.cpp
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15src/fuse_readdir_plus_posix.cpp
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8src/fuse_readdir_posix.cpp
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/*
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ISC License |
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Copyright (c) 2020, 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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#include "config_inodecalc.hpp"
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#include "fs_inode.hpp"
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InodeCalc::InodeCalc(const std::string &s_) |
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{ |
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fs::inode::set_algo(s_); |
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} |
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std::string |
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InodeCalc::to_string(void) const |
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{ |
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return fs::inode::get_algo(); |
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} |
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int |
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InodeCalc::from_string(const std::string &s_) |
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{ |
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return fs::inode::set_algo(s_); |
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} |
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/*
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ISC License |
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Copyright (c) 2020, 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 "tofrom_string.hpp"
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class InodeCalc : public ToFromString |
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{ |
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public: |
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InodeCalc(const std::string &); |
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public: |
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std::string to_string(void) const; |
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int from_string(const std::string &); |
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}; |
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@ -0,0 +1,164 @@ |
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/*
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ISC License |
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Copyright (c) 2020, 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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#include "ef.hpp"
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#include "fasthash.h"
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#include "fs_inode.hpp"
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#include <string>
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#include <pthread.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/stat.h>
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typedef uint64_t (*inodefunc_t)(const char*,const uint64_t,const mode_t,const dev_t,const ino_t); |
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static uint64_t hybrid_hash(const char*,const uint64_t,const mode_t,const dev_t,const ino_t); |
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static inodefunc_t g_func = hybrid_hash; |
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static |
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uint64_t |
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passthrough(const char *fusepath_, |
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const uint64_t fusepath_len_, |
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const mode_t mode_, |
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const dev_t dev_, |
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const ino_t ino_) |
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{ |
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return ino_; |
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} |
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static |
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uint64_t |
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path_hash(const char *fusepath_, |
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const uint64_t fusepath_len_, |
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const mode_t mode_, |
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const dev_t dev_, |
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const ino_t ino_) |
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{ |
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return fasthash64(fusepath_, |
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fusepath_len_, |
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fs::inode::MAGIC); |
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} |
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static |
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uint64_t |
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devino_hash(const char *fusepath_, |
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const uint64_t fusepath_len_, |
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const mode_t mode_, |
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const dev_t dev_, |
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const ino_t ino_) |
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{ |
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uint64_t buf[2]; |
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buf[0] = dev_; |
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buf[1] = ino_; |
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return fasthash64((void*)&buf[0], |
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sizeof(buf), |
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fs::inode::MAGIC); |
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} |
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static |
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uint64_t |
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hybrid_hash(const char *fusepath_, |
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const uint64_t fusepath_len_, |
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const mode_t mode_, |
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const dev_t dev_, |
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const ino_t ino_) |
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{ |
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return (S_ISDIR(mode_) ? |
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path_hash(fusepath_,fusepath_len_,mode_,dev_,ino_) : |
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devino_hash(fusepath_,fusepath_len_,mode_,dev_,ino_)); |
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} |
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namespace fs |
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{ |
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namespace inode |
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{ |
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int |
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set_algo(const std::string &algo_) |
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{ |
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if(algo_ == "passthrough") |
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g_func = passthrough; |
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ef(algo_ == "path-hash") |
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g_func = path_hash; |
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ef(algo_ == "devino-hash") |
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g_func = devino_hash; |
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ef(algo_ == "hybrid-hash") |
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g_func = hybrid_hash; |
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else |
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return -EINVAL; |
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return 0; |
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} |
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std::string |
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get_algo(void) |
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{ |
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if(g_func == passthrough) |
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return "passthrough"; |
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if(g_func == path_hash) |
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return "path-hash"; |
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if(g_func == devino_hash) |
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return "devino-hash"; |
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if(g_func == hybrid_hash) |
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return "hybrid-hash"; |
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return std::string(); |
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} |
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uint64_t |
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calc(const char *fusepath_, |
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const uint64_t fusepath_len_, |
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const mode_t mode_, |
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const dev_t dev_, |
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const ino_t ino_) |
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{ |
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return g_func(fusepath_,fusepath_len_,mode_,dev_,ino_); |
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} |
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void |
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calc(const char *fusepath_, |
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const uint64_t fusepath_len_, |
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struct stat *st_) |
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{ |
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st_->st_ino = calc(fusepath_, |
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fusepath_len_, |
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st_->st_mode, |
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st_->st_dev, |
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st_->st_ino); |
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} |
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void |
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calc(const char *fusepath_, |
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struct stat *st_) |
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{ |
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calc(fusepath_,strlen(fusepath_),st_); |
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} |
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void |
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calc(const std::string &fusepath_, |
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struct stat *st_) |
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{ |
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calc(fusepath_.c_str(),fusepath_.size(),st_); |
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} |
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} |
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} |
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