text: /*
    Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
  
    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.
  */
  
  #include "config.hpp"
  #include "errno.hpp"
  #include "fs_lremovexattr.hpp"
  #include "fs_path.hpp"
  #include "policy_rv.hpp"
  #include "ugid.hpp"
  
  #include "fuse.h"
  
  #include <string>
  #include <vector>
  
  using std::string;
  using std::vector;
  
  
  namespace l
  {
    static
    int
    get_error(const PolicyRV &prv_,
              const string   &basepath_)
    {
      for(int i = 0, ei = prv_.success.size(); i < ei; i++)
        {
          if(prv_.success[i].basepath == basepath_)
            return prv_.success[i].rv;
        }
  
      for(int i = 0, ei = prv_.error.size(); i < ei; i++)
        {
          if(prv_.error[i].basepath == basepath_)
            return prv_.error[i].rv;
        }
  
      return 0;
    }
  
    static
    void
    removexattr_loop_core(const string &basepath_,
                          const char   *fusepath_,
                          const char   *attrname_,
                          PolicyRV     *prv_)
    {
      string fullpath;
  
      fullpath = fs::path::make(basepath_,fusepath_);
  
      errno = 0;
      fs::lremovexattr(fullpath,attrname_);
  
      prv_->insert(errno,basepath_);
    }
  
    static
    void
    removexattr_loop(const vector<string> &basepaths_,
                     const char           *fusepath_,
                     const char           *attrname_,
                     PolicyRV             *prv_)
    {
      for(size_t i = 0, ei = basepaths_.size(); i != ei; i++)
        {
          l::removexattr_loop_core(basepaths_[i],fusepath_,attrname_,prv_);
        }
    }
  
    static
    int
    removexattr(const Policy::Action &actionFunc_,
                const Policy::Search &searchFunc_,
                const Branches       &branches_,
                const char           *fusepath_,
                const char           *attrname_)
    {
      int rv;
      PolicyRV prv;
      vector<string> basepaths;
  
      rv = actionFunc_(branches_,fusepath_,&basepaths);
      if(rv == -1)
        return -errno;
  
      l::removexattr_loop(basepaths,fusepath_,attrname_,&prv);
      if(prv.error.empty())
        return 0;
      if(prv.success.empty())
        return prv.error[0].rv;
  
      basepaths.clear();
      rv = searchFunc_(branches_,fusepath_,&basepaths);
      if(rv == -1)
        return -errno;
  
      return l::get_error(prv,basepaths[0]);
    }
  }
  
  namespace FUSE
  {
    int
    removexattr(const char *fusepath_,
                const char *attrname_)
    {
      Config::Read cfg;
  
      if(fusepath_ == CONTROLFILE)
        return -ENOATTR;
  
      if(cfg->xattr.to_int())
        return -cfg->xattr.to_int();
  
      const fuse_context *fc = fuse_get_context();
      const ugid::Set     ugid(fc->uid,fc->gid);
  
      return l::removexattr(cfg->func.removexattr.policy,
                            cfg->func.getxattr.policy,
                            cfg->branches,
                            fusepath_,
                            attrname_);
    }
  }
  