mirror of https://github.com/trapexit/mergerfs.git
Browse Source
add tagging branches RW/RO/NW
add tagging branches RW/RO/NW
This allows users to tag a branch as readonly or not for writing regardless of how the filesystem is mounted. Should simplify deployments and offer more flexibility.pull/527/head
Antonio SJ Musumeci
6 years ago
57 changed files with 1669 additions and 1293 deletions
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64README.md
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113man/mergerfs.1
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8src/access.cpp
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216src/branch.cpp
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55src/branch.hpp
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8src/chmod.cpp
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8src/chown.cpp
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8src/config.cpp
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5src/config.hpp
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10src/create.cpp
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14src/fs.cpp
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4src/fs.hpp
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15src/fs_glob.cpp
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2src/fs_glob.hpp
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18src/fs_info.cpp
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5src/fs_info.hpp
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8src/getattr.cpp
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33src/getxattr.cpp
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8src/ioctl.cpp
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32src/link.cpp
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9src/listxattr.cpp
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10src/mkdir.cpp
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10src/mknod.cpp
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8src/open.cpp
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26src/option_parser.cpp
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37src/policy.hpp
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62src/policy_all.cpp
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107src/policy_epall.cpp
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119src/policy_epff.cpp
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133src/policy_eplfs.cpp
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133src/policy_eplus.cpp
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133src/policy_epmfs.cpp
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4src/policy_eprand.cpp
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2src/policy_erofs.cpp
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51src/policy_error.hpp
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70src/policy_ff.cpp
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2src/policy_invalid.cpp
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96src/policy_lfs.cpp
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95src/policy_lus.cpp
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95src/policy_mfs.cpp
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116src/policy_newest.cpp
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4src/policy_rand.cpp
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10src/readdir.cpp
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8src/readlink.cpp
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8src/removexattr.cpp
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40src/rename.cpp
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8src/rmdir.cpp
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117src/setxattr.cpp
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16src/statfs.cpp
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12src/str.cpp
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4src/str.hpp
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10src/symlink.cpp
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8src/truncate.cpp
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8src/unlink.cpp
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8src/utimens.cpp
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16src/write.cpp
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23src/write_buf.cpp
@ -0,0 +1,216 @@ |
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/*
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ISC License |
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Copyright (c) 2018, Antonio SJ Musumeci <trapexit@spawn.link> |
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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 appear in all copies. |
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|
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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 "branch.hpp"
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#include "fs.hpp"
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#include "fs_glob.hpp"
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#include "str.hpp"
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#include <fnmatch.h>
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#include <string>
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using std::string; |
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using std::vector; |
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bool |
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Branch::ro(void) const |
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{ |
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return (mode == Branch::RO); |
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} |
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bool |
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Branch::ro_or_nw(void) const |
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{ |
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return ((mode == Branch::RO) || |
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(mode == Branch::NW)); |
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} |
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string |
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Branches::to_string(const bool mode_) const |
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{ |
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string tmp; |
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for(size_t i = 0; i < size(); i++) |
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{ |
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const Branch &branch = (*this)[i]; |
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tmp += branch.path; |
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if(mode_) |
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{ |
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tmp += '='; |
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switch(branch.mode) |
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{ |
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default: |
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case Branch::RW: |
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tmp += "RW"; |
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break; |
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case Branch::RO: |
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tmp += "RO"; |
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break; |
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case Branch::NW: |
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tmp += "NW"; |
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break; |
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} |
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} |
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tmp += ':'; |
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} |
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if(*tmp.rbegin() == ':') |
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tmp.erase(tmp.size() - 1); |
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return tmp; |
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} |
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void |
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Branches::to_paths(vector<string> &vec_) const |
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{ |
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for(size_t i = 0; i < size(); i++) |
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{ |
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const Branch &branch = (*this)[i]; |
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vec_.push_back(branch.path); |
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} |
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} |
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static |
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void |
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parse(const string &str_, |
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Branches &branches_) |
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{ |
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string str; |
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Branch branch; |
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vector<string> globbed; |
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str = str_; |
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branch.mode = Branch::INVALID; |
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if(str::ends_with(str,"=RO")) |
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branch.mode = Branch::RO; |
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else if(str::ends_with(str,"=RW")) |
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branch.mode = Branch::RW; |
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else if(str::ends_with(str,"=NW")) |
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branch.mode = Branch::NW; |
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if(branch.mode != Branch::INVALID) |
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str.resize(str.size() - 3); |
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else |
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branch.mode = Branch::RW; |
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fs::glob(str,globbed); |
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fs::realpathize(globbed); |
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for(size_t i = 0; i < globbed.size(); i++) |
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{ |
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branch.path = globbed[i]; |
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branches_.push_back(branch); |
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} |
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} |
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void |
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Branches::set(const std::string &str_) |
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{ |
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vector<string> paths; |
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clear(); |
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str::split(paths,str_,':'); |
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for(size_t i = 0; i < paths.size(); i++) |
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{ |
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Branches branches; |
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parse(paths[i],branches); |
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insert(end(), |
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branches.begin(), |
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branches.end()); |
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} |
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} |
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void |
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Branches::add_begin(const std::string &str_) |
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{ |
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vector<string> paths; |
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str::split(paths,str_,':'); |
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for(size_t i = 0; i < paths.size(); i++) |
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{ |
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Branches branches; |
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parse(paths[i],branches); |
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insert(begin(), |
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branches.begin(), |
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branches.end()); |
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} |
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} |
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void |
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Branches::add_end(const std::string &str_) |
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{ |
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vector<string> paths; |
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str::split(paths,str_,':'); |
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for(size_t i = 0; i < paths.size(); i++) |
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{ |
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Branches branches; |
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parse(paths[i],branches); |
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insert(end(), |
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branches.begin(), |
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branches.end()); |
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} |
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} |
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void |
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Branches::erase_begin(void) |
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{ |
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erase(begin()); |
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} |
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void |
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Branches::erase_end(void) |
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{ |
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pop_back(); |
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} |
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void |
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Branches::erase_fnmatch(const std::string &str_) |
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{ |
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vector<string> patterns; |
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str::split(patterns,str_,':'); |
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for(iterator i = begin(); i != end();) |
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{ |
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int match = FNM_NOMATCH; |
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for(vector<string>::const_iterator pi = patterns.begin(); |
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pi != patterns.end() && match != 0; |
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++pi) |
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{ |
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match = ::fnmatch(pi->c_str(),i->path.c_str(),0); |
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} |
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i = ((match == 0) ? erase(i) : (i+1)); |
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} |
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} |
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@ -0,0 +1,55 @@ |
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/*
|
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ISC License |
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|
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Copyright (c) 2018, Antonio SJ Musumeci <trapexit@spawn.link> |
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|
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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 appear in all copies. |
|||
|
|||
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
|||
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
|||
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
|||
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
|||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
|||
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 <string>
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#include <vector>
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struct Branch |
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{ |
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enum Mode |
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{ |
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INVALID, |
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RO, |
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RW, |
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NW |
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}; |
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Mode mode; |
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std::string path; |
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bool ro(void) const; |
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bool ro_or_nw(void) const; |
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}; |
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class Branches : public std::vector<Branch> |
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{ |
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public: |
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std::string to_string(const bool mode_ = false) const; |
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void to_paths(std::vector<std::string> &vec_) const; |
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public: |
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void set(const std::string &str_); |
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void add_begin(const std::string &str_); |
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void add_end(const std::string &str_); |
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void erase_begin(void); |
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void erase_end(void); |
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void erase_fnmatch(const std::string &str_); |
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}; |
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@ -0,0 +1,51 @@ |
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/*
|
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ISC License |
|||
|
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Copyright (c) 2018, Antonio SJ Musumeci <trapexit@spawn.link> |
|||
|
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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 appear in all copies. |
|||
|
|||
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
|||
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
|||
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
|||
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
|||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
|||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
|||
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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#define error_and_continue(CUR,ERR) \
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{ \ |
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policy::calc_error(CUR,ERR); \ |
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continue; \ |
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} |
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namespace policy |
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{ |
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static |
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inline |
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void |
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calc_error(int &cur_, |
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int err_) |
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{ |
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switch(cur_) |
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{ |
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default: |
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case ENOENT: |
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cur_ = err_; |
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break; |
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case ENOSPC: |
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if(err_ != ENOENT) |
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cur_ = err_; |
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break; |
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case EROFS: |
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if((err_ != ENOENT) && (err_ != ENOSPC)) |
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cur_ = err_; |
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break; |
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} |
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} |
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} |
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