general code cleanup

src/fuse_chown.cpp

@@ -0,0 +1,110 @@
+/*
+  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_base_chown.hpp"
+#include "fs_path.hpp"
+#include "rv.hpp"
+#include "rwlock.hpp"
+#include "ugid.hpp"
+
+#include <fuse.h>
+
+#include <string>
+#include <vector>
+
+using std::string;
+using std::vector;
+
+namespace l
+{
+  static
+  int
+  chown_loop_core(const string *basepath_,
+                  const char   *fusepath_,
+                  const uid_t   uid_,
+                  const gid_t   gid_,
+                  const int     error_)
+  {
+    int rv;
+    string fullpath;
+
+    fullpath = fs::path::make(basepath_,fusepath_);
+
+    rv = fs::lchown(fullpath,uid_,gid_);
+
+    return error::calc(rv,error_,errno);
+  }
+
+  static
+  int
+  chown_loop(const vector<const string*> &basepaths_,
+             const char                  *fusepath_,
+             const uid_t                  uid_,
+             const gid_t                  gid_)
+  {
+    int error;
+
+    error = -1;
+    for(size_t i = 0, ei = basepaths_.size(); i != ei; i++)
+      {
+        error = l::chown_loop_core(basepaths_[i],fusepath_,uid_,gid_,error);
+      }
+
+    return -error;
+  }
+
+  static
+  int
+  chown(Policy::Func::Action  actionFunc_,
+        const Branches       &branches_,
+        const uint64_t        minfreespace_,
+        const char           *fusepath_,
+        const uid_t           uid_,
+        const gid_t           gid_)
+  {
+    int rv;
+    vector<const string*> basepaths;
+
+    rv = actionFunc_(branches_,fusepath_,minfreespace_,basepaths);
+    if(rv == -1)
+      return -errno;
+
+    return l::chown_loop(basepaths,fusepath_,uid_,gid_);
+  }
+}
+
+namespace FUSE
+{
+  int
+  chown(const char *fusepath_,
+        uid_t       uid_,
+        gid_t       gid_)
+  {
+    const fuse_context      *fc     = fuse_get_context();
+    const Config            &config = Config::get(fc);
+    const ugid::Set          ugid(fc->uid,fc->gid);
+    const rwlock::ReadGuard  readlock(&config.branches_lock);
+
+    return l::chown(config.chown,
+                    config.branches,
+                    config.minfreespace,
+                    fusepath_,
+                    uid_,
+                    gid_);
+  }
+}