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@ -44,6 +44,21 @@ using std::string; |
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using std::vector; |
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using std::vector; |
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static |
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int |
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cleanup_flags(const int flags_) |
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{ |
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int rv; |
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rv = flags_; |
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rv = (rv & ~O_TRUNC); |
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rv = (rv & ~O_CREAT); |
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rv = (rv & ~O_EXCL); |
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return rv; |
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} |
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namespace l |
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namespace l |
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{ |
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{ |
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static |
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static |
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@ -51,82 +66,99 @@ namespace l |
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movefile(const Policy::Create &createFunc_, |
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movefile(const Policy::Create &createFunc_, |
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const Branches::CPtr &branches_, |
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const Branches::CPtr &branches_, |
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const string &fusepath_, |
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const string &fusepath_, |
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int *origfd_) |
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int origfd_) |
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{ |
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{ |
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int rv; |
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int rv; |
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int fdin; |
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int fdout; |
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int fdin_flags; |
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int64_t fdin_size; |
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int srcfd; |
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int dstfd; |
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int dstfd_flags; |
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int origfd_flags; |
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int64_t srcfd_size; |
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string fusedir; |
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string fusedir; |
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string fdin_path; |
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string fdout_temp; |
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vector<string> fdout_path; |
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fdin = *origfd_; |
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string srcfd_branch; |
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string srcfd_filepath; |
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string dstfd_filepath; |
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string dstfd_tmp_filepath; |
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vector<string> dstfd_branch; |
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fdin_flags = fs::getfl(fdin); |
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if(fdin_flags == -1) |
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return -1; |
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srcfd = -1; |
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dstfd = -1; |
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rv = fs::findonfs(branches_,fusepath_,fdin,&fdin_path); |
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rv = fs::findonfs(branches_,fusepath_,origfd_,&srcfd_branch); |
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if(rv == -1) |
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if(rv == -1) |
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return -1; |
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return -errno; |
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rv = createFunc_(branches_,fusepath_,&fdout_path); |
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rv = createFunc_(branches_,fusepath_,&dstfd_branch); |
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if(rv == -1) |
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if(rv == -1) |
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return -1; |
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return -errno; |
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fdin_size = fs::file_size(fdin); |
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if(fdin_size == -1) |
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return -1; |
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origfd_flags = fs::getfl(origfd_); |
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if(origfd_flags == -1) |
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return -errno; |
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if(fs::has_space(fdout_path[0],fdin_size) == false) |
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return (errno=ENOSPC,-1); |
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srcfd_size = fs::file_size(origfd_); |
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if(srcfd_size == -1) |
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return -errno; |
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if(fs::has_space(dstfd_branch[0],srcfd_size) == false) |
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return -ENOSPC; |
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fusedir = fs::path::dirname(fusepath_); |
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fusedir = fs::path::dirname(fusepath_); |
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rv = fs::clonepath(fdin_path,fdout_path[0],fusedir); |
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rv = fs::clonepath(srcfd_branch,dstfd_branch[0],fusedir); |
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if(rv == -1) |
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if(rv == -1) |
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return -1; |
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fs::path::append(fdin_path,fusepath_); |
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fdin = fs::open(fdin_path,O_RDONLY); |
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if(fdin == -1) |
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return -1; |
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return -ENOSPC; |
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srcfd_filepath = srcfd_branch; |
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fs::path::append(srcfd_filepath,fusepath_); |
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srcfd = fs::open(srcfd_filepath,O_RDONLY); |
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if(srcfd == -1) |
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return -ENOSPC; |
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dstfd_filepath = dstfd_branch[0]; |
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fs::path::append(dstfd_filepath,fusepath_); |
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dstfd_tmp_filepath = dstfd_filepath; |
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dstfd = fs::mktemp(&dstfd_tmp_filepath,O_WRONLY); |
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if(dstfd == -1) |
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{ |
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fs::close(srcfd); |
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return -ENOSPC; |
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} |
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fs::path::append(fdout_path[0],fusepath_); |
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fdout_temp = fdout_path[0]; |
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fdout = fs::mktemp(&fdout_temp,fdin_flags); |
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if(fdout == -1) |
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return -1; |
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rv = fs::clonefile(srcfd,dstfd); |
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if(rv == -1) |
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{ |
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fs::close(srcfd); |
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fs::close(dstfd); |
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fs::unlink(dstfd_tmp_filepath); |
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return -ENOSPC; |
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} |
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rv = fs::clonefile(fdin,fdout); |
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rv = fs::rename(dstfd_tmp_filepath,dstfd_filepath); |
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if(rv == -1) |
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if(rv == -1) |
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goto cleanup; |
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{ |
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fs::close(srcfd); |
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fs::close(dstfd); |
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fs::unlink(dstfd_tmp_filepath); |
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return -ENOSPC; |
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} |
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rv = fs::rename(fdout_temp,fdout_path[0]); |
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fs::close(srcfd); |
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fs::close(dstfd); |
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dstfd_flags = ::cleanup_flags(origfd_flags); |
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rv = fs::open(dstfd_filepath,dstfd_flags); |
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if(rv == -1) |
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if(rv == -1) |
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goto cleanup; |
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// should we care if it fails?
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fs::unlink(fdin_path); |
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std::swap(*origfd_,fdout); |
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fs::close(fdin); |
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fs::close(fdout); |
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return 0; |
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cleanup: |
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rv = errno; |
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if(fdin != -1) |
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fs::close(fdin); |
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if(fdout != -1) |
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fs::close(fdout); |
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fs::unlink(fdout_temp); |
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errno = rv; |
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return -1; |
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{ |
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fs::unlink(dstfd_tmp_filepath); |
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return -ENOSPC; |
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} |
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fs::unlink(srcfd_filepath); |
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fs::close(origfd_); |
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return rv; |
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} |
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} |
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} |
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} |
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@ -136,7 +168,7 @@ namespace fs |
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movefile(const Policy::Create &policy_, |
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movefile(const Policy::Create &policy_, |
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const Branches::CPtr &basepaths_, |
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const Branches::CPtr &basepaths_, |
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const string &fusepath_, |
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const string &fusepath_, |
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int *origfd_) |
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int origfd_) |
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{ |
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{ |
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return l::movefile(policy_,basepaths_,fusepath_,origfd_); |
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return l::movefile(policy_,basepaths_,fusepath_,origfd_); |
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} |
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} |
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@ -145,7 +177,7 @@ namespace fs |
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movefile_as_root(const Policy::Create &policy_, |
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movefile_as_root(const Policy::Create &policy_, |
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const Branches::CPtr &basepaths_, |
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const Branches::CPtr &basepaths_, |
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const string &fusepath_, |
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const string &fusepath_, |
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int *origfd_) |
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int origfd_) |
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{ |
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{ |
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const ugid::Set ugid(0,0); |
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const ugid::Set ugid(0,0); |
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