/* * s3fs - FUSE-based file system backed by Amazon S3 * * Copyright(C) 2007 Randy Rizun * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include #include #include #include #include #include #include #include #include "common.h" #include "s3fs.h" #include "metaheader.h" #include "fdcache.h" #include "fdcache_auto.h" #include "curl.h" #include "curl_multi.h" #include "s3objlist.h" #include "cache.h" #include "mvnode.h" #include "addhead.h" #include "sighandlers.h" #include "s3fs_xml.h" #include "s3fs_util.h" #include "string_util.h" #include "s3fs_auth.h" #include "s3fs_help.h" #include "s3fs_util.h" #include "mpu_util.h" //------------------------------------------------------------------- // Symbols //------------------------------------------------------------------- #if !defined(ENOATTR) #define ENOATTR ENODATA #endif enum dirtype { DIRTYPE_UNKNOWN = -1, DIRTYPE_NEW = 0, DIRTYPE_OLD = 1, DIRTYPE_FOLDER = 2, DIRTYPE_NOOBJ = 3, }; //------------------------------------------------------------------- // Static variables //------------------------------------------------------------------- static uid_t mp_uid = 0; // owner of mount point(only not specified uid opt) static gid_t mp_gid = 0; // group of mount point(only not specified gid opt) static mode_t mp_mode = 0; // mode of mount point static mode_t mp_umask = 0; // umask for mount point static bool is_mp_umask = false;// default does not set. static std::string mountpoint; static S3fsCred* ps3fscred = NULL; // using only in this file static std::string mimetype_file; static bool nocopyapi = false; static bool norenameapi = false; static bool nonempty = false; static bool allow_other = false; static uid_t s3fs_uid = 0; static gid_t s3fs_gid = 0; static mode_t s3fs_umask = 0; static bool is_s3fs_uid = false;// default does not set. static bool is_s3fs_gid = false;// default does not set. static bool is_s3fs_umask = false;// default does not set. static bool is_remove_cache = false; static bool is_use_xattr = false; static off_t multipart_threshold = 25 * 1024 * 1024; static int64_t singlepart_copy_limit = 512 * 1024 * 1024; static bool is_specified_endpoint = false; static int s3fs_init_deferred_exit_status = 0; static bool support_compat_dir = true;// default supports compatibility directory type static int max_keys_list_object = 1000;// default is 1000 static off_t max_dirty_data = 5LL * 1024LL * 1024LL * 1024LL; static bool use_wtf8 = false; static off_t fake_diskfree_size = -1; // default is not set(-1) //------------------------------------------------------------------- // Global functions : prototype //------------------------------------------------------------------- int put_headers(const char* path, headers_t& meta, bool is_copy, bool use_st_size = true); // [NOTE] global function because this is called from FdEntity class //------------------------------------------------------------------- // Static functions : prototype //------------------------------------------------------------------- static bool is_special_name_folder_object(const char* path); static int chk_dir_object_type(const char* path, std::string& newpath, std::string& nowpath, std::string& nowcache, headers_t* pmeta = NULL, dirtype* pDirType = NULL); static int remove_old_type_dir(const std::string& path, dirtype type); static int get_object_attribute(const char* path, struct stat* pstbuf, headers_t* pmeta = NULL, bool overcheck = true, bool* pisforce = NULL, bool add_no_truncate_cache = false); static int check_object_access(const char* path, int mask, struct stat* pstbuf); static int check_object_owner(const char* path, struct stat* pstbuf); static int check_parent_object_access(const char* path, int mask); static int get_local_fent(AutoFdEntity& autoent, FdEntity **entity, const char* path, int flags = O_RDONLY, bool is_load = false); static bool multi_head_callback(S3fsCurl* s3fscurl); static S3fsCurl* multi_head_retry_callback(S3fsCurl* s3fscurl); static int readdir_multi_head(const char* path, const S3ObjList& head, void* buf, fuse_fill_dir_t filler); static int list_bucket(const char* path, S3ObjList& head, const char* delimiter, bool check_content_only = false); static int directory_empty(const char* path); static int rename_large_object(const char* from, const char* to); static int create_file_object(const char* path, mode_t mode, uid_t uid, gid_t gid); static int create_directory_object(const char* path, mode_t mode, time_t atime, time_t mtime, time_t ctime, uid_t uid, gid_t gid); static int rename_object(const char* from, const char* to, bool update_ctime); static int rename_object_nocopy(const char* from, const char* to, bool update_ctime); static int clone_directory_object(const char* from, const char* to, bool update_ctime); static int rename_directory(const char* from, const char* to); static int remote_mountpath_exists(const char* path); static void free_xattrs(xattrs_t& xattrs); static bool parse_xattr_keyval(const std::string& xattrpair, std::string& key, PXATTRVAL& pval); static size_t parse_xattrs(const std::string& strxattrs, xattrs_t& xattrs); static std::string build_xattrs(const xattrs_t& xattrs); static int s3fs_check_service(); static bool set_mountpoint_attribute(struct stat& mpst); static int set_bucket(const char* arg); static int my_fuse_opt_proc(void* data, const char* arg, int key, struct fuse_args* outargs); //------------------------------------------------------------------- // fuse interface functions //------------------------------------------------------------------- static int s3fs_getattr(const char* path, struct stat* stbuf); static int s3fs_readlink(const char* path, char* buf, size_t size); static int s3fs_mknod(const char* path, mode_t mode, dev_t rdev); static int s3fs_mkdir(const char* path, mode_t mode); static int s3fs_unlink(const char* path); static int s3fs_rmdir(const char* path); static int s3fs_symlink(const char* from, const char* to); static int s3fs_rename(const char* from, const char* to); static int s3fs_link(const char* from, const char* to); static int s3fs_chmod(const char* path, mode_t mode); static int s3fs_chmod_nocopy(const char* path, mode_t mode); static int s3fs_chown(const char* path, uid_t uid, gid_t gid); static int s3fs_chown_nocopy(const char* path, uid_t uid, gid_t gid); static int s3fs_utimens(const char* path, const struct timespec ts[2]); static int s3fs_utimens_nocopy(const char* path, const struct timespec ts[2]); static int s3fs_truncate(const char* path, off_t size); static int s3fs_create(const char* path, mode_t mode, struct fuse_file_info* fi); static int s3fs_open(const char* path, struct fuse_file_info* fi); static int s3fs_read(const char* path, char* buf, size_t size, off_t offset, struct fuse_file_info* fi); static int s3fs_write(const char* path, const char* buf, size_t size, off_t offset, struct fuse_file_info* fi); static int s3fs_statfs(const char* path, struct statvfs* stbuf); static int s3fs_flush(const char* path, struct fuse_file_info* fi); static int s3fs_fsync(const char* path, int datasync, struct fuse_file_info* fi); static int s3fs_release(const char* path, struct fuse_file_info* fi); static int s3fs_opendir(const char* path, struct fuse_file_info* fi); static int s3fs_readdir(const char* path, void* buf, fuse_fill_dir_t filler, off_t offset, struct fuse_file_info* fi); static int s3fs_access(const char* path, int mask); static void* s3fs_init(struct fuse_conn_info* conn); static void s3fs_destroy(void*); #if defined(__APPLE__) static int s3fs_setxattr(const char* path, const char* name, const char* value, size_t size, int flags, uint32_t position); static int s3fs_getxattr(const char* path, const char* name, char* value, size_t size, uint32_t position); #else static int s3fs_setxattr(const char* path, const char* name, const char* value, size_t size, int flags); static int s3fs_getxattr(const char* path, const char* name, char* value, size_t size); #endif static int s3fs_listxattr(const char* path, char* list, size_t size); static int s3fs_removexattr(const char* path, const char* name); //------------------------------------------------------------------- // Functions //------------------------------------------------------------------- static bool IS_REPLACEDIR(dirtype type) { return DIRTYPE_OLD == type || DIRTYPE_FOLDER == type || DIRTYPE_NOOBJ == type; } static bool IS_RMTYPEDIR(dirtype type) { return DIRTYPE_OLD == type || DIRTYPE_FOLDER == type; } static bool is_special_name_folder_object(const char* path) { if(!support_compat_dir){ // s3fs does not support compatibility directory type("_$folder$" etc) now, // thus always returns false. return false; } if(!path || '\0' == path[0]){ return false; } std::string strpath = path; headers_t header; if(std::string::npos == strpath.find("_$folder$", 0)){ if('/' == *strpath.rbegin()){ strpath.erase(strpath.length() - 1); } strpath += "_$folder$"; } S3fsCurl s3fscurl; if(0 != s3fscurl.HeadRequest(strpath.c_str(), header)){ return false; } header.clear(); S3FS_MALLOCTRIM(0); return true; } // [Detail] // This function is complicated for checking directory object type. // Arguments is used for deleting cache/path, and remake directory object. // Please see the codes which calls this function. // // path: target path // newpath: should be object path for making/putting/getting after checking // nowpath: now object name for deleting after checking // nowcache: now cache path for deleting after checking // pmeta: headers map // pDirType: directory object type // static int chk_dir_object_type(const char* path, std::string& newpath, std::string& nowpath, std::string& nowcache, headers_t* pmeta, dirtype* pDirType) { dirtype TypeTmp; int result = -1; bool isforce = false; dirtype* pType = pDirType ? pDirType : &TypeTmp; // Normalize new path. newpath = path; if('/' != *newpath.rbegin()){ std::string::size_type Pos; if(std::string::npos != (Pos = newpath.find("_$folder$", 0))){ newpath.erase(Pos); } newpath += "/"; } // Always check "dir/" at first. if(0 == (result = get_object_attribute(newpath.c_str(), NULL, pmeta, false, &isforce))){ // Found "dir/" cache --> Check for "_$folder$", "no dir object" nowcache = newpath; if(is_special_name_folder_object(newpath.c_str())){ // check support_compat_dir in this function // "_$folder$" type. (*pType) = DIRTYPE_FOLDER; nowpath.erase(newpath.length() - 1); nowpath += "_$folder$"; // cut and add }else if(isforce){ // "no dir object" type. (*pType) = DIRTYPE_NOOBJ; nowpath = ""; }else{ nowpath = newpath; if(!nowpath.empty() && '/' == *nowpath.rbegin()){ // "dir/" type (*pType) = DIRTYPE_NEW; }else{ // "dir" type (*pType) = DIRTYPE_OLD; } } }else if(support_compat_dir){ // Check "dir" when support_compat_dir is enabled nowpath.erase(newpath.length() - 1); if(0 == (result = get_object_attribute(nowpath.c_str(), NULL, pmeta, false, &isforce))){ // Found "dir" cache --> this case is only "dir" type. // Because, if object is "_$folder$" or "no dir object", the cache is "dir/" type. // (But "no dir object" is checked here.) nowcache = nowpath; if(isforce){ (*pType) = DIRTYPE_NOOBJ; nowpath = ""; }else{ (*pType) = DIRTYPE_OLD; } }else{ // Not found cache --> check for "_$folder$" and "no dir object". // (come here is that support_compat_dir is enabled) nowcache = ""; // This case is no cache. nowpath += "_$folder$"; if(is_special_name_folder_object(nowpath.c_str())){ // "_$folder$" type. (*pType) = DIRTYPE_FOLDER; result = 0; // result is OK. }else if(-ENOTEMPTY == directory_empty(newpath.c_str())){ // "no dir object" type. (*pType) = DIRTYPE_NOOBJ; nowpath = ""; // now path. result = 0; // result is OK. }else{ // Error: Unknown type. (*pType) = DIRTYPE_UNKNOWN; newpath = ""; nowpath = ""; } } } return result; } static int remove_old_type_dir(const std::string& path, dirtype type) { if(IS_RMTYPEDIR(type)){ S3fsCurl s3fscurl; int result = s3fscurl.DeleteRequest(path.c_str()); if(0 != result && -ENOENT != result){ return result; } // succeed removing or not found the directory }else{ // nothing to do } return 0; } // // Get object attributes with stat cache. // This function is base for s3fs_getattr(). // // [NOTICE] // Checking order is changed following list because of reducing the number of the requests. // 1) "dir" // 2) "dir/" // 3) "dir_$folder$" // static int get_object_attribute(const char* path, struct stat* pstbuf, headers_t* pmeta, bool overcheck, bool* pisforce, bool add_no_truncate_cache) { int result = -1; struct stat tmpstbuf; struct stat* pstat = pstbuf ? pstbuf : &tmpstbuf; headers_t tmpHead; headers_t* pheader = pmeta ? pmeta : &tmpHead; std::string strpath; S3fsCurl s3fscurl; bool forcedir = false; std::string::size_type Pos; S3FS_PRN_DBG("[path=%s]", path); if(!path || '\0' == path[0]){ return -ENOENT; } memset(pstat, 0, sizeof(struct stat)); if(0 == strcmp(path, "/") || 0 == strcmp(path, ".")){ pstat->st_nlink = 1; // see fuse faq pstat->st_mode = mp_mode; pstat->st_uid = is_s3fs_uid ? s3fs_uid : mp_uid; pstat->st_gid = is_s3fs_gid ? s3fs_gid : mp_gid; return 0; } // Check cache. pisforce = (NULL != pisforce ? pisforce : &forcedir); (*pisforce) = false; strpath = path; if(support_compat_dir && overcheck && std::string::npos != (Pos = strpath.find("_$folder$", 0))){ strpath.erase(Pos); strpath += "/"; } if(StatCache::getStatCacheData()->GetStat(strpath, pstat, pheader, overcheck, pisforce)){ return 0; } if(StatCache::getStatCacheData()->IsNoObjectCache(strpath)){ // there is the path in the cache for no object, it is no object. return -ENOENT; } // At first, check path strpath = path; result = s3fscurl.HeadRequest(strpath.c_str(), (*pheader)); s3fscurl.DestroyCurlHandle(); // if not found target path object, do over checking if(-EPERM == result){ // [NOTE] // In case of a permission error, it exists in directory // file list but inaccessible. So there is a problem that // it will send a HEAD request every time, because it is // not registered in the Stats cache. // Therefore, even if the file has a permission error, it // should be registered in the Stats cache. However, if // the response without modifying is registered in the // cache, the file permission will be 0644(umask dependent) // because the meta header does not exist. // Thus, set the mode of 0000 here in the meta header so // that s3fs can print a permission error when the file // is actually accessed. // It is better not to set meta header other than mode, // so do not do it. // (*pheader)["x-amz-meta-mode"] = str(0); }else if(0 != result){ if(overcheck){ // when support_compat_dir is disabled, strpath maybe have "_$folder$". if('/' != *strpath.rbegin() && std::string::npos == strpath.find("_$folder$", 0)){ // now path is "object", do check "object/" for over checking strpath += "/"; result = s3fscurl.HeadRequest(strpath.c_str(), (*pheader)); s3fscurl.DestroyCurlHandle(); } if(support_compat_dir && 0 != result){ // now path is "object/", do check "object_$folder$" for over checking strpath.erase(strpath.length() - 1); strpath += "_$folder$"; result = s3fscurl.HeadRequest(strpath.c_str(), (*pheader)); s3fscurl.DestroyCurlHandle(); if(0 != result){ // cut "_$folder$" for over checking "no dir object" after here if(std::string::npos != (Pos = strpath.find("_$folder$", 0))){ strpath.erase(Pos); } } } } if(support_compat_dir && 0 != result && std::string::npos == strpath.find("_$folder$", 0)){ // now path is "object" or "object/", do check "no dir object" which is not object but has only children. if('/' == *strpath.rbegin()){ strpath.erase(strpath.length() - 1); } if(-ENOTEMPTY == directory_empty(strpath.c_str())){ // found "no dir object". strpath += "/"; *pisforce = true; result = 0; } } }else{ if(support_compat_dir && '/' != *strpath.rbegin() && std::string::npos == strpath.find("_$folder$", 0) && is_need_check_obj_detail(*pheader)){ // check a case of that "object" does not have attribute and "object" is possible to be directory. if(-ENOTEMPTY == directory_empty(strpath.c_str())){ // found "no dir object". strpath += "/"; *pisforce = true; result = 0; } } } // [NOTE] // If the file is listed but not allowed access, put it in // the positive cache instead of the negative cache. // if(0 != result && -EPERM != result){ // finally, "path" object did not find. Add no object cache. strpath = path; // reset original StatCache::getStatCacheData()->AddNoObjectCache(strpath); return result; } // if path has "_$folder$", need to cut it. if(std::string::npos != (Pos = strpath.find("_$folder$", 0))){ strpath.erase(Pos); strpath += "/"; } // Set into cache // // [NOTE] // When add_no_truncate_cache is true, the stats is always cached. // This cached stats is only removed by DelStat(). // This is necessary for the case to access the attribute of opened file. // (ex. getxattr() is called while writing to the opened file.) // if(add_no_truncate_cache || 0 != StatCache::getStatCacheData()->GetCacheSize()){ // add into stat cache if(!StatCache::getStatCacheData()->AddStat(strpath, (*pheader), forcedir, add_no_truncate_cache)){ S3FS_PRN_ERR("failed adding stat cache [path=%s]", strpath.c_str()); return -ENOENT; } if(!StatCache::getStatCacheData()->GetStat(strpath, pstat, pheader, overcheck, pisforce)){ // There is not in cache.(why?) -> retry to convert. if(!convert_header_to_stat(strpath.c_str(), (*pheader), pstat, forcedir)){ S3FS_PRN_ERR("failed convert headers to stat[path=%s]", strpath.c_str()); return -ENOENT; } } }else{ // cache size is Zero -> only convert. if(!convert_header_to_stat(strpath.c_str(), (*pheader), pstat, forcedir)){ S3FS_PRN_ERR("failed convert headers to stat[path=%s]", strpath.c_str()); return -ENOENT; } } return 0; } // // Check the object uid and gid for write/read/execute. // The param "mask" is as same as access() function. // If there is not a target file, this function returns -ENOENT. // If the target file can be accessed, the result always is 0. // // path: the target object path // mask: bit field(F_OK, R_OK, W_OK, X_OK) like access(). // stat: NULL or the pointer of struct stat. // static int check_object_access(const char* path, int mask, struct stat* pstbuf) { int result; struct stat st; struct stat* pst = (pstbuf ? pstbuf : &st); struct fuse_context* pcxt; S3FS_PRN_DBG("[path=%s]", path); if(NULL == (pcxt = fuse_get_context())){ return -EIO; } S3FS_PRN_DBG("[pid=%u,uid=%u,gid=%u]", (unsigned int)(pcxt->pid), (unsigned int)(pcxt->uid), (unsigned int)(pcxt->gid)); if(0 != (result = get_object_attribute(path, pst))){ // If there is not the target file(object), result is -ENOENT. return result; } if(0 == pcxt->uid){ // root is allowed all accessing. return 0; } if(is_s3fs_uid && s3fs_uid == pcxt->uid){ // "uid" user is allowed all accessing. return 0; } if(F_OK == mask){ // if there is a file, always return allowed. return 0; } // for "uid", "gid" option uid_t obj_uid = (is_s3fs_uid ? s3fs_uid : pst->st_uid); gid_t obj_gid = (is_s3fs_gid ? s3fs_gid : pst->st_gid); // compare file mode and uid/gid + mask. mode_t mode; mode_t base_mask = S_IRWXO; if(is_s3fs_umask){ // If umask is set, all object attributes set ~umask. mode = ((S_IRWXU | S_IRWXG | S_IRWXO) & ~s3fs_umask); }else{ mode = pst->st_mode; } if(pcxt->uid == obj_uid){ base_mask |= S_IRWXU; } if(pcxt->gid == obj_gid){ base_mask |= S_IRWXG; } if(1 == is_uid_include_group(pcxt->uid, obj_gid)){ base_mask |= S_IRWXG; } mode &= base_mask; if(X_OK == (mask & X_OK)){ if(0 == (mode & (S_IXUSR | S_IXGRP | S_IXOTH))){ return -EACCES; } } if(W_OK == (mask & W_OK)){ if(0 == (mode & (S_IWUSR | S_IWGRP | S_IWOTH))){ return -EACCES; } } if(R_OK == (mask & R_OK)){ if(0 == (mode & (S_IRUSR | S_IRGRP | S_IROTH))){ return -EACCES; } } if(0 == mode){ return -EACCES; } return 0; } static int check_object_owner(const char* path, struct stat* pstbuf) { int result; struct stat st; struct stat* pst = (pstbuf ? pstbuf : &st); struct fuse_context* pcxt; S3FS_PRN_DBG("[path=%s]", path); if(NULL == (pcxt = fuse_get_context())){ return -EIO; } if(0 != (result = get_object_attribute(path, pst))){ // If there is not the target file(object), result is -ENOENT. return result; } // check owner if(0 == pcxt->uid){ // root is allowed all accessing. return 0; } if(is_s3fs_uid && s3fs_uid == pcxt->uid){ // "uid" user is allowed all accessing. return 0; } if(pcxt->uid == pst->st_uid){ return 0; } return -EPERM; } // // Check accessing the parent directories of the object by uid and gid. // static int check_parent_object_access(const char* path, int mask) { std::string parent; int result; S3FS_PRN_DBG("[path=%s]", path); if(0 == strcmp(path, "/") || 0 == strcmp(path, ".")){ // path is mount point. return 0; } if(X_OK == (mask & X_OK)){ for(parent = mydirname(path); !parent.empty(); parent = mydirname(parent)){ if(parent == "."){ parent = "/"; } if(0 != (result = check_object_access(parent.c_str(), X_OK, NULL))){ return result; } if(parent == "/" || parent == "."){ break; } } } mask = (mask & ~X_OK); if(0 != mask){ parent = mydirname(path); if(parent == "."){ parent = "/"; } if(0 != (result = check_object_access(parent.c_str(), mask, NULL))){ return result; } } return 0; } // // ssevalue is MD5 for SSE-C type, or KMS id for SSE-KMS // bool get_object_sse_type(const char* path, sse_type_t& ssetype, std::string& ssevalue) { if(!path){ return false; } headers_t meta; if(0 != get_object_attribute(path, NULL, &meta)){ S3FS_PRN_ERR("Failed to get object(%s) headers", path); return false; } ssetype = sse_type_t::SSE_DISABLE; ssevalue.erase(); for(headers_t::iterator iter = meta.begin(); iter != meta.end(); ++iter){ std::string key = (*iter).first; if(0 == strcasecmp(key.c_str(), "x-amz-server-side-encryption") && 0 == strcasecmp((*iter).second.c_str(), "AES256")){ ssetype = sse_type_t::SSE_S3; }else if(0 == strcasecmp(key.c_str(), "x-amz-server-side-encryption-aws-kms-key-id")){ ssetype = sse_type_t::SSE_KMS; ssevalue = (*iter).second; }else if(0 == strcasecmp(key.c_str(), "x-amz-server-side-encryption-customer-key-md5")){ ssetype = sse_type_t::SSE_C; ssevalue = (*iter).second; } } return true; } static int get_local_fent(AutoFdEntity& autoent, FdEntity **entity, const char* path, int flags, bool is_load) { int result; struct stat stobj; FdEntity* ent; headers_t meta; S3FS_PRN_INFO2("[path=%s]", path); if(0 != (result = get_object_attribute(path, &stobj, &meta))){ return result; } // open time_t mtime = (!S_ISREG(stobj.st_mode) && !S_ISLNK(stobj.st_mode)) ? -1 : stobj.st_mtime; bool force_tmpfile = S_ISREG(stobj.st_mode) ? false : true; if(NULL == (ent = autoent.Open(path, &meta, stobj.st_size, mtime, flags, force_tmpfile, true, AutoLock::NONE))){ S3FS_PRN_ERR("Could not open file. errno(%d)", errno); return -EIO; } // load if(is_load && !ent->LoadAll(autoent.GetPseudoFd(), &meta)){ S3FS_PRN_ERR("Could not load file. errno(%d)", errno); autoent.Close(); return -EIO; } *entity = ent; return 0; } // // create or update s3 meta // ow_sse_flg is for over writing sse header by use_sse option. // @return fuse return code // int put_headers(const char* path, headers_t& meta, bool is_copy, bool use_st_size) { int result; S3fsCurl s3fscurl(true); off_t size; S3FS_PRN_INFO2("[path=%s]", path); // files larger than 5GB must be modified via the multipart interface // *** If there is not target object(a case of move command), // get_object_attribute() returns error with initializing buf. if(use_st_size){ struct stat buf; (void)get_object_attribute(path, &buf); size = buf.st_size; }else{ size = get_size(meta); } if(!nocopyapi && !nomultipart && size >= multipart_threshold){ if(0 != (result = s3fscurl.MultipartHeadRequest(path, size, meta, is_copy))){ return result; } }else{ if(0 != (result = s3fscurl.PutHeadRequest(path, meta, is_copy))){ return result; } } return 0; } static int s3fs_getattr(const char* _path, struct stat* stbuf) { WTF8_ENCODE(path) int result; S3FS_PRN_INFO("[path=%s]", path); // check parent directory attribute. if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_access(path, F_OK, stbuf))){ return result; } // If has already opened fd, the st_size should be instead. // (See: Issue 241) if(stbuf){ AutoFdEntity autoent; FdEntity* ent; if(NULL != (ent = autoent.OpenExistFdEntity(path))){ struct stat tmpstbuf; if(ent->GetStats(tmpstbuf)){ stbuf->st_size = tmpstbuf.st_size; } } stbuf->st_blksize = 4096; stbuf->st_blocks = get_blocks(stbuf->st_size); S3FS_PRN_DBG("[path=%s] uid=%u, gid=%u, mode=%04o", path, (unsigned int)(stbuf->st_uid), (unsigned int)(stbuf->st_gid), stbuf->st_mode); } S3FS_MALLOCTRIM(0); return result; } static int s3fs_readlink(const char* _path, char* buf, size_t size) { if(!_path || !buf || 0 == size){ return 0; } WTF8_ENCODE(path) std::string strValue; // check symbolic link cache if(!StatCache::getStatCacheData()->GetSymlink(std::string(path), strValue)){ // not found in cache, then open the path { // scope for AutoFdEntity AutoFdEntity autoent; FdEntity* ent; int result; if(0 != (result = get_local_fent(autoent, &ent, path, O_RDONLY))){ S3FS_PRN_ERR("could not get fent(file=%s)", path); return result; } // Get size off_t readsize; if(!ent->GetSize(readsize)){ S3FS_PRN_ERR("could not get file size(file=%s)", path); return -EIO; } if(static_cast(size) <= readsize){ readsize = size - 1; } // Read ssize_t ressize; if(0 > (ressize = ent->Read(autoent.GetPseudoFd(), buf, 0, readsize))){ S3FS_PRN_ERR("could not read file(file=%s, ressize=%zd)", path, ressize); return static_cast(ressize); } buf[ressize] = '\0'; } // check buf if it has space words. strValue = trim(std::string(buf)); // decode wtf8. This will always be shorter if(use_wtf8){ strValue = s3fs_wtf8_decode(strValue); } // add symbolic link cache if(!StatCache::getStatCacheData()->AddSymlink(std::string(path), strValue)){ S3FS_PRN_ERR("failed to add symbolic link cache for %s", path); } } // copy result strncpy(buf, strValue.c_str(), size - 1); buf[size - 1] = '\0'; S3FS_MALLOCTRIM(0); return 0; } // common function for creation of a plain object static int create_file_object(const char* path, mode_t mode, uid_t uid, gid_t gid) { S3FS_PRN_INFO2("[path=%s][mode=%04o]", path, mode); time_t now = time(NULL); headers_t meta; meta["Content-Type"] = S3fsCurl::LookupMimeType(std::string(path)); meta["x-amz-meta-uid"] = str(uid); meta["x-amz-meta-gid"] = str(gid); meta["x-amz-meta-mode"] = str(mode); meta["x-amz-meta-atime"] = str(now); meta["x-amz-meta-ctime"] = str(now); meta["x-amz-meta-mtime"] = str(now); S3fsCurl s3fscurl(true); return s3fscurl.PutRequest(path, meta, -1); // fd=-1 means for creating zero byte object. } static int s3fs_mknod(const char *_path, mode_t mode, dev_t rdev) { WTF8_ENCODE(path) int result; struct fuse_context* pcxt; S3FS_PRN_INFO("[path=%s][mode=%04o][dev=%llu]", path, mode, (unsigned long long)rdev); if(NULL == (pcxt = fuse_get_context())){ return -EIO; } if(0 != (result = create_file_object(path, mode, pcxt->uid, pcxt->gid))){ S3FS_PRN_ERR("could not create object for special file(result=%d)", result); return result; } StatCache::getStatCacheData()->DelStat(path); S3FS_MALLOCTRIM(0); return result; } static int s3fs_create(const char* _path, mode_t mode, struct fuse_file_info* fi) { WTF8_ENCODE(path) int result; struct fuse_context* pcxt; S3FS_PRN_INFO("[path=%s][mode=%04o][flags=0x%x]", path, mode, fi->flags); if(NULL == (pcxt = fuse_get_context())){ return -EIO; } // check parent directory attribute. if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } result = check_object_access(path, W_OK, NULL); if(-ENOENT == result){ if(0 != (result = check_parent_object_access(path, W_OK))){ return result; } }else if(0 != result){ return result; } time_t now = time(NULL); headers_t meta; meta["Content-Length"] = "0"; meta["x-amz-meta-uid"] = str(pcxt->uid); meta["x-amz-meta-gid"] = str(pcxt->gid); meta["x-amz-meta-mode"] = str(mode); meta["x-amz-meta-atime"] = str(now); meta["x-amz-meta-mtime"] = str(now); meta["x-amz-meta-ctime"] = str(now); // [NOTE] set no_truncate flag // At this point, the file has not been created(uploaded) and // the data is only present in the Stats cache. // The Stats cache should not be deleted automatically by // timeout. If this stats is deleted, s3fs will try to get it // from the server with a Head request and will get an // unexpected error because the result object does not exist. // if(!StatCache::getStatCacheData()->AddStat(path, meta, false, true)){ return -EIO; } AutoFdEntity autoent; FdEntity* ent; if(NULL == (ent = autoent.Open(path, &meta, 0, -1, fi->flags, false, true, AutoLock::NONE))){ StatCache::getStatCacheData()->DelStat(path); return -EIO; } ent->MarkDirtyNewFile(); fi->fh = autoent.Detach(); // KEEP fdentity open; S3FS_MALLOCTRIM(0); return 0; } static int create_directory_object(const char* path, mode_t mode, time_t atime, time_t mtime, time_t ctime, uid_t uid, gid_t gid) { S3FS_PRN_INFO1("[path=%s][mode=%04o][atime=%lld][mtime=%lld][ctime=%lld][uid=%u][gid=%u]", path, mode, static_cast(atime), static_cast(ctime), static_cast(mtime), (unsigned int)uid, (unsigned int)gid); if(!path || '\0' == path[0]){ return -EINVAL; } std::string tpath = path; if('/' != *tpath.rbegin()){ tpath += "/"; } headers_t meta; meta["x-amz-meta-uid"] = str(uid); meta["x-amz-meta-gid"] = str(gid); meta["x-amz-meta-mode"] = str(mode); meta["x-amz-meta-atime"] = str(atime); meta["x-amz-meta-mtime"] = str(mtime); meta["x-amz-meta-ctime"] = str(ctime); S3fsCurl s3fscurl; return s3fscurl.PutRequest(tpath.c_str(), meta, -1); // fd=-1 means for creating zero byte object. } static int s3fs_mkdir(const char* _path, mode_t mode) { WTF8_ENCODE(path) int result; struct fuse_context* pcxt; S3FS_PRN_INFO("[path=%s][mode=%04o]", path, mode); if(NULL == (pcxt = fuse_get_context())){ return -EIO; } // check parent directory attribute. if(0 != (result = check_parent_object_access(path, W_OK | X_OK))){ return result; } if(-ENOENT != (result = check_object_access(path, F_OK, NULL))){ if(0 == result){ result = -EEXIST; } return result; } time_t now = time(NULL); result = create_directory_object(path, mode, now, now, now, pcxt->uid, pcxt->gid); StatCache::getStatCacheData()->DelStat(path); S3FS_MALLOCTRIM(0); return result; } static int s3fs_unlink(const char* _path) { WTF8_ENCODE(path) int result; S3FS_PRN_INFO("[path=%s]", path); if(0 != (result = check_parent_object_access(path, W_OK | X_OK))){ return result; } S3fsCurl s3fscurl; result = s3fscurl.DeleteRequest(path); StatCache::getStatCacheData()->DelStat(path); StatCache::getStatCacheData()->DelSymlink(path); FdManager::DeleteCacheFile(path); S3FS_MALLOCTRIM(0); return result; } static int directory_empty(const char* path) { int result; S3ObjList head; if((result = list_bucket(path, head, "/", true)) != 0){ S3FS_PRN_ERR("list_bucket returns error."); return result; } if(!head.IsEmpty()){ return -ENOTEMPTY; } return 0; } static int s3fs_rmdir(const char* _path) { WTF8_ENCODE(path) int result; std::string strpath; struct stat stbuf; S3FS_PRN_INFO("[path=%s]", path); if(0 != (result = check_parent_object_access(path, W_OK | X_OK))){ return result; } // directory must be empty if(directory_empty(path) != 0){ return -ENOTEMPTY; } strpath = path; if('/' != *strpath.rbegin()){ strpath += "/"; } S3fsCurl s3fscurl; result = s3fscurl.DeleteRequest(strpath.c_str()); s3fscurl.DestroyCurlHandle(); StatCache::getStatCacheData()->DelStat(strpath.c_str()); // double check for old version(before 1.63) // The old version makes "dir" object, newer version makes "dir/". // A case, there is only "dir", the first removing object is "dir/". // Then "dir/" is not exists, but curl_delete returns 0. // So need to check "dir" and should be removed it. if('/' == *strpath.rbegin()){ strpath.erase(strpath.length() - 1); } if(0 == get_object_attribute(strpath.c_str(), &stbuf, NULL, false)){ if(S_ISDIR(stbuf.st_mode)){ // Found "dir" object. result = s3fscurl.DeleteRequest(strpath.c_str()); s3fscurl.DestroyCurlHandle(); StatCache::getStatCacheData()->DelStat(strpath.c_str()); } } // If there is no "dir" and "dir/" object(this case is made by s3cmd/s3sync), // the cache key is "dir/". So we get error only once(delete "dir/"). // check for "_$folder$" object. // This processing is necessary for other S3 clients compatibility. if(is_special_name_folder_object(strpath.c_str())){ strpath += "_$folder$"; result = s3fscurl.DeleteRequest(strpath.c_str()); } S3FS_MALLOCTRIM(0); return result; } static int s3fs_symlink(const char* _from, const char* _to) { WTF8_ENCODE(from) WTF8_ENCODE(to) int result; struct fuse_context* pcxt; S3FS_PRN_INFO("[from=%s][to=%s]", from, to); if(NULL == (pcxt = fuse_get_context())){ return -EIO; } if(0 != (result = check_parent_object_access(to, W_OK | X_OK))){ return result; } if(-ENOENT != (result = check_object_access(to, F_OK, NULL))){ if(0 == result){ result = -EEXIST; } return result; } time_t now = time(NULL); headers_t headers; headers["Content-Type"] = std::string("application/octet-stream"); // Static headers["x-amz-meta-mode"] = str(S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO); headers["x-amz-meta-atime"] = str(now); headers["x-amz-meta-ctime"] = str(now); headers["x-amz-meta-mtime"] = str(now); headers["x-amz-meta-uid"] = str(pcxt->uid); headers["x-amz-meta-gid"] = str(pcxt->gid); // open tmpfile std::string strFrom; { // scope for AutoFdEntity AutoFdEntity autoent; FdEntity* ent; if(NULL == (ent = autoent.Open(to, &headers, 0, -1, O_RDWR, true, true, AutoLock::NONE))){ S3FS_PRN_ERR("could not open tmpfile(errno=%d)", errno); return -errno; } // write(without space words) strFrom = trim(std::string(from)); ssize_t from_size = static_cast(strFrom.length()); ssize_t ressize; if(from_size != (ressize = ent->Write(autoent.GetPseudoFd(), strFrom.c_str(), 0, from_size))){ if(ressize < 0){ S3FS_PRN_ERR("could not write tmpfile(errno=%d)", static_cast(ressize)); return static_cast(ressize); }else{ S3FS_PRN_ERR("could not write tmpfile %zd byte(errno=%d)", ressize, errno); return (0 == errno ? -EIO : -errno); } } // upload if(0 != (result = ent->Flush(autoent.GetPseudoFd(), true))){ S3FS_PRN_WARN("could not upload tmpfile(result=%d)", result); } } StatCache::getStatCacheData()->DelStat(to); if(!StatCache::getStatCacheData()->AddSymlink(std::string(to), strFrom)){ S3FS_PRN_ERR("failed to add symbolic link cache for %s", to); } S3FS_MALLOCTRIM(0); return result; } static int rename_object(const char* from, const char* to, bool update_ctime) { int result; std::string s3_realpath; headers_t meta; struct stat buf; S3FS_PRN_INFO1("[from=%s][to=%s]", from , to); if(0 != (result = check_parent_object_access(to, W_OK | X_OK))){ // not permit writing "to" object parent dir. return result; } if(0 != (result = check_parent_object_access(from, W_OK | X_OK))){ // not permit removing "from" object parent dir. return result; } if(0 != (result = get_object_attribute(from, &buf, &meta))){ return result; } s3_realpath = get_realpath(from); if(update_ctime){ meta["x-amz-meta-ctime"] = str(time(NULL)); } meta["x-amz-copy-source"] = urlEncode(service_path + S3fsCred::GetBucket() + s3_realpath); meta["Content-Type"] = S3fsCurl::LookupMimeType(std::string(to)); meta["x-amz-metadata-directive"] = "REPLACE"; // [NOTE] // If it has a cache, open it first and leave it open until rename. // The cache is renamed after put_header, because it must be open // at the time of renaming. { // update time AutoFdEntity autoent; FdEntity* ent; if(NULL == (ent = autoent.OpenExistFdEntity(from))){ // no opened fd if(FdManager::IsCacheDir()){ // create cache file if be needed ent = autoent.Open(from, &meta, buf.st_size, -1, O_RDONLY, false, true, AutoLock::NONE); } if(ent){ struct timespec mtime = get_mtime(meta); struct timespec ctime = get_ctime(meta); struct timespec atime = get_atime(meta); if(mtime.tv_sec < 0){ mtime.tv_sec = 0L; mtime.tv_nsec = 0L; } if(ctime.tv_sec < 0){ ctime.tv_sec = 0L; ctime.tv_nsec = 0L; } if(atime.tv_sec < 0){ atime.tv_sec = 0L; atime.tv_nsec = 0L; } ent->SetMCtime(mtime, ctime); ent->SetAtime(atime); } } // copy if(0 != (result = put_headers(to, meta, true, /* use_st_size= */ false))){ return result; } // rename FdManager::get()->Rename(from, to); } // Remove file result = s3fs_unlink(from); StatCache::getStatCacheData()->DelStat(to); return result; } static int rename_object_nocopy(const char* from, const char* to, bool update_ctime) { int result; S3FS_PRN_INFO1("[from=%s][to=%s]", from , to); if(0 != (result = check_parent_object_access(to, W_OK | X_OK))){ // not permit writing "to" object parent dir. return result; } if(0 != (result = check_parent_object_access(from, W_OK | X_OK))){ // not permit removing "from" object parent dir. return result; } // open & load { // scope for AutoFdEntity AutoFdEntity autoent; FdEntity* ent; if(0 != (result = get_local_fent(autoent, &ent, from, O_RDWR, true))){ S3FS_PRN_ERR("could not open and read file(%s)", from); return result; } // Set header if(!ent->SetContentType(to)){ S3FS_PRN_ERR("could not set content-type for %s", to); return -EIO; } // update ctime if(update_ctime){ struct timespec ts = {time(NULL), 0}; ent->SetCtime(ts); } // upload if(0 != (result = ent->RowFlush(autoent.GetPseudoFd(), to, true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", to, result); return result; } FdManager::get()->Rename(from, to); } // Remove file result = s3fs_unlink(from); // Stats StatCache::getStatCacheData()->DelStat(to); return result; } static int rename_large_object(const char* from, const char* to) { int result; struct stat buf; headers_t meta; S3FS_PRN_INFO1("[from=%s][to=%s]", from , to); if(0 != (result = check_parent_object_access(to, W_OK | X_OK))){ // not permit writing "to" object parent dir. return result; } if(0 != (result = check_parent_object_access(from, W_OK | X_OK))){ // not permit removing "from" object parent dir. return result; } if(0 != (result = get_object_attribute(from, &buf, &meta, false))){ return result; } S3fsCurl s3fscurl(true); if(0 != (result = s3fscurl.MultipartRenameRequest(from, to, meta, buf.st_size))){ return result; } s3fscurl.DestroyCurlHandle(); // Remove file result = s3fs_unlink(from); StatCache::getStatCacheData()->DelStat(to); FdManager::DeleteCacheFile(to); return result; } static int clone_directory_object(const char* from, const char* to, bool update_ctime) { int result = -1; struct stat stbuf; S3FS_PRN_INFO1("[from=%s][to=%s]", from, to); // get target's attributes if(0 != (result = get_object_attribute(from, &stbuf))){ return result; } result = create_directory_object(to, stbuf.st_mode, stbuf.st_atime, stbuf.st_mtime, (update_ctime ? time(NULL) : stbuf.st_ctime), stbuf.st_uid, stbuf.st_gid); StatCache::getStatCacheData()->DelStat(to); return result; } static int rename_directory(const char* from, const char* to) { S3ObjList head; s3obj_list_t headlist; std::string strfrom = from ? from : ""; // from is without "/". std::string strto = to ? to : ""; // to is without "/" too. std::string basepath = strfrom + "/"; std::string newpath; // should be from name(not used) std::string nowcache; // now cache path(not used) dirtype DirType; bool normdir; MVNODE* mn_head = NULL; MVNODE* mn_tail = NULL; MVNODE* mn_cur; struct stat stbuf; int result; bool is_dir; S3FS_PRN_INFO1("[from=%s][to=%s]", from, to); // // Initiate and Add base directory into MVNODE struct. // strto += "/"; if(0 == chk_dir_object_type(from, newpath, strfrom, nowcache, NULL, &DirType) && DIRTYPE_UNKNOWN != DirType){ if(DIRTYPE_NOOBJ != DirType){ normdir = false; }else{ normdir = true; strfrom = from; // from directory is not removed, but from directory attr is needed. } if(NULL == (add_mvnode(&mn_head, &mn_tail, strfrom.c_str(), strto.c_str(), true, normdir))){ return -ENOMEM; } }else{ // Something wrong about "from" directory. } // // get a list of all the objects // // No delimiter is specified, the result(head) is all object keys. // (CommonPrefixes is empty, but all object is listed in Key.) if(0 != (result = list_bucket(basepath.c_str(), head, NULL))){ S3FS_PRN_ERR("list_bucket returns error."); return result; } head.GetNameList(headlist); // get name without "/". S3ObjList::MakeHierarchizedList(headlist, false); // add hierarchized dir. s3obj_list_t::const_iterator liter; for(liter = headlist.begin(); headlist.end() != liter; ++liter){ // make "from" and "to" object name. std::string from_name = basepath + (*liter); std::string to_name = strto + (*liter); std::string etag = head.GetETag((*liter).c_str()); // Check subdirectory. StatCache::getStatCacheData()->HasStat(from_name, etag.c_str()); // Check ETag if(0 != get_object_attribute(from_name.c_str(), &stbuf, NULL)){ S3FS_PRN_WARN("failed to get %s object attribute.", from_name.c_str()); continue; } if(S_ISDIR(stbuf.st_mode)){ is_dir = true; if(0 != chk_dir_object_type(from_name.c_str(), newpath, from_name, nowcache, NULL, &DirType) || DIRTYPE_UNKNOWN == DirType){ S3FS_PRN_WARN("failed to get %s%s object directory type.", basepath.c_str(), (*liter).c_str()); continue; } if(DIRTYPE_NOOBJ != DirType){ normdir = false; }else{ normdir = true; from_name = basepath + (*liter); // from directory is not removed, but from directory attr is needed. } }else{ is_dir = false; normdir = false; } // push this one onto the stack if(NULL == add_mvnode(&mn_head, &mn_tail, from_name.c_str(), to_name.c_str(), is_dir, normdir)){ return -ENOMEM; } } // // rename // // rename directory objects. for(mn_cur = mn_head; mn_cur; mn_cur = mn_cur->next){ if(mn_cur->is_dir && mn_cur->old_path && '\0' != mn_cur->old_path[0]){ // [NOTE] // The ctime is updated only for the top (from) directory. // Other than that, it will not be updated. // if(0 != (result = clone_directory_object(mn_cur->old_path, mn_cur->new_path, (strfrom == mn_cur->old_path)))){ S3FS_PRN_ERR("clone_directory_object returned an error(%d)", result); free_mvnodes(mn_head); return result; } } } // iterate over the list - copy the files with rename_object // does a safe copy - copies first and then deletes old for(mn_cur = mn_head; mn_cur; mn_cur = mn_cur->next){ if(!mn_cur->is_dir){ if(!nocopyapi && !norenameapi){ result = rename_object(mn_cur->old_path, mn_cur->new_path, false); // keep ctime }else{ result = rename_object_nocopy(mn_cur->old_path, mn_cur->new_path, false); // keep ctime } if(0 != result){ S3FS_PRN_ERR("rename_object returned an error(%d)", result); free_mvnodes(mn_head); return result; } } } // Iterate over old the directories, bottoms up and remove for(mn_cur = mn_tail; mn_cur; mn_cur = mn_cur->prev){ if(mn_cur->is_dir && mn_cur->old_path && '\0' != mn_cur->old_path[0]){ if(!(mn_cur->is_normdir)){ if(0 != (result = s3fs_rmdir(mn_cur->old_path))){ S3FS_PRN_ERR("s3fs_rmdir returned an error(%d)", result); free_mvnodes(mn_head); return result; } }else{ // cache clear. StatCache::getStatCacheData()->DelStat(mn_cur->old_path); } } } free_mvnodes(mn_head); return 0; } static int s3fs_rename(const char* _from, const char* _to) { WTF8_ENCODE(from) WTF8_ENCODE(to) struct stat buf; int result; S3FS_PRN_INFO("[from=%s][to=%s]", from, to); if(0 != (result = check_parent_object_access(to, W_OK | X_OK))){ // not permit writing "to" object parent dir. return result; } if(0 != (result = check_parent_object_access(from, W_OK | X_OK))){ // not permit removing "from" object parent dir. return result; } if(0 != (result = get_object_attribute(from, &buf, NULL))){ return result; } if(0 != (result = directory_empty(to))){ return result; } // flush pending writes if file is open { // scope for AutoFdEntity AutoFdEntity autoent; FdEntity* ent; if(NULL != (ent = autoent.OpenExistFdEntity(from, O_RDWR))){ if(0 != (result = ent->Flush(autoent.GetPseudoFd(), true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", to, result); return result; } StatCache::getStatCacheData()->DelStat(from); } } // files larger than 5GB must be modified via the multipart interface if(S_ISDIR(buf.st_mode)){ result = rename_directory(from, to); }else if(!nomultipart && buf.st_size >= singlepart_copy_limit){ result = rename_large_object(from, to); }else{ if(!nocopyapi && !norenameapi){ result = rename_object(from, to, true); // update ctime }else{ result = rename_object_nocopy(from, to, true); // update ctime } } S3FS_MALLOCTRIM(0); return result; } static int s3fs_link(const char* _from, const char* _to) { WTF8_ENCODE(from) WTF8_ENCODE(to) S3FS_PRN_INFO("[from=%s][to=%s]", from, to); return -ENOTSUP; } static int s3fs_chmod(const char* _path, mode_t mode) { WTF8_ENCODE(path) int result; std::string strpath; std::string newpath; std::string nowcache; headers_t meta; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; S3FS_PRN_INFO("[path=%s][mode=%04o]", path, mode); if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change mode for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_owner(path, &stbuf))){ return result; } if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, &meta, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, &meta); } if(0 != result){ return result; } if(S_ISDIR(stbuf.st_mode) && IS_REPLACEDIR(nDirType)){ // Should rebuild directory object(except new type) // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), mode, stbuf.st_atime, stbuf.st_mtime, time(NULL), stbuf.st_uid, stbuf.st_gid))){ return result; } }else{ // normal object or directory object of newer version headers_t updatemeta; updatemeta["x-amz-meta-ctime"] = str(time(NULL)); updatemeta["x-amz-meta-mode"] = str(mode); updatemeta["x-amz-copy-source"] = urlEncode(service_path + S3fsCred::GetBucket() + get_realpath(strpath.c_str())); updatemeta["x-amz-metadata-directive"] = "REPLACE"; // check opened file handle. // // If the file starts uploading by multipart when the disk capacity is insufficient, // we need to put these header after finishing upload. // Or if the file is only open, we must update to FdEntity's internal meta. // AutoFdEntity autoent; FdEntity* ent; bool need_put_header = true; if(NULL != (ent = autoent.OpenExistFdEntity(path))){ if(ent->MergeOrgMeta(updatemeta)){ // meta is changed, but now uploading. // then the meta is pending and accumulated to be put after the upload is complete. S3FS_PRN_INFO("meta pending until upload is complete"); need_put_header = false; // If there is data in the Stats cache, update the Stats cache. StatCache::getStatCacheData()->UpdateMetaStats(strpath, updatemeta); } } if(need_put_header){ // not found opened file. merge_headers(meta, updatemeta, true); // upload meta directly. if(0 != (result = put_headers(strpath.c_str(), meta, true))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); } } S3FS_MALLOCTRIM(0); return 0; } static int s3fs_chmod_nocopy(const char* _path, mode_t mode) { WTF8_ENCODE(path) int result; std::string strpath; std::string newpath; std::string nowcache; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; S3FS_PRN_INFO1("[path=%s][mode=%04o]", path, mode); if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change mode for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_owner(path, &stbuf))){ return result; } // Get attributes if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, NULL, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, NULL); } if(0 != result){ return result; } if(S_ISDIR(stbuf.st_mode)){ // Should rebuild all directory object // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), mode, stbuf.st_atime, stbuf.st_mtime, time(NULL), stbuf.st_uid, stbuf.st_gid))){ return result; } }else{ // normal object or directory object of newer version // open & load AutoFdEntity autoent; FdEntity* ent; if(0 != (result = get_local_fent(autoent, &ent, strpath.c_str(), O_RDWR, true))){ S3FS_PRN_ERR("could not open and read file(%s)", strpath.c_str()); return result; } struct timespec ts = {time(NULL), 0}; ent->SetCtime(ts); // Change file mode ent->SetMode(mode); // upload if(0 != (result = ent->Flush(autoent.GetPseudoFd(), true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", strpath.c_str(), result); return result; } StatCache::getStatCacheData()->DelStat(nowcache); } S3FS_MALLOCTRIM(0); return result; } static int s3fs_chown(const char* _path, uid_t uid, gid_t gid) { WTF8_ENCODE(path) int result; std::string strpath; std::string newpath; std::string nowcache; headers_t meta; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; S3FS_PRN_INFO("[path=%s][uid=%u][gid=%u]", path, (unsigned int)uid, (unsigned int)gid); if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change owner for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_owner(path, &stbuf))){ return result; } if((uid_t)(-1) == uid){ uid = stbuf.st_uid; } if((gid_t)(-1) == gid){ gid = stbuf.st_gid; } if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, &meta, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, &meta); } if(0 != result){ return result; } if(S_ISDIR(stbuf.st_mode) && IS_REPLACEDIR(nDirType)){ // Should rebuild directory object(except new type) // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), stbuf.st_mode, stbuf.st_atime, stbuf.st_mtime, time(NULL), uid, gid))){ return result; } }else{ headers_t updatemeta; updatemeta["x-amz-meta-ctime"] = str(time(NULL)); updatemeta["x-amz-meta-uid"] = str(uid); updatemeta["x-amz-meta-gid"] = str(gid); updatemeta["x-amz-copy-source"] = urlEncode(service_path + S3fsCred::GetBucket() + get_realpath(strpath.c_str())); updatemeta["x-amz-metadata-directive"] = "REPLACE"; // check opened file handle. // // If the file starts uploading by multipart when the disk capacity is insufficient, // we need to put these header after finishing upload. // Or if the file is only open, we must update to FdEntity's internal meta. // AutoFdEntity autoent; FdEntity* ent; bool need_put_header = true; if(NULL != (ent = autoent.OpenExistFdEntity(path))){ if(ent->MergeOrgMeta(updatemeta)){ // meta is changed, but now uploading. // then the meta is pending and accumulated to be put after the upload is complete. S3FS_PRN_INFO("meta pending until upload is complete"); need_put_header = false; // If there is data in the Stats cache, update the Stats cache. StatCache::getStatCacheData()->UpdateMetaStats(strpath, updatemeta); } } if(need_put_header){ // not found opened file. merge_headers(meta, updatemeta, true); // upload meta directly. if(0 != (result = put_headers(strpath.c_str(), meta, true))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); } } S3FS_MALLOCTRIM(0); return 0; } static int s3fs_chown_nocopy(const char* _path, uid_t uid, gid_t gid) { WTF8_ENCODE(path) int result; std::string strpath; std::string newpath; std::string nowcache; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; S3FS_PRN_INFO1("[path=%s][uid=%u][gid=%u]", path, (unsigned int)uid, (unsigned int)gid); if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change owner for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_owner(path, &stbuf))){ return result; } if((uid_t)(-1) == uid){ uid = stbuf.st_uid; } if((gid_t)(-1) == gid){ gid = stbuf.st_gid; } // Get attributes if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, NULL, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, NULL); } if(0 != result){ return result; } if(S_ISDIR(stbuf.st_mode)){ // Should rebuild all directory object // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), stbuf.st_mode, stbuf.st_atime, stbuf.st_mtime, time(NULL), uid, gid))){ return result; } }else{ // normal object or directory object of newer version // open & load AutoFdEntity autoent; FdEntity* ent; if(0 != (result = get_local_fent(autoent, &ent, strpath.c_str(), O_RDWR, true))){ S3FS_PRN_ERR("could not open and read file(%s)", strpath.c_str()); return result; } struct timespec ts = {time(NULL), 0}; ent->SetCtime(ts); // Change owner ent->SetUId(uid); ent->SetGId(gid); // upload if(0 != (result = ent->Flush(autoent.GetPseudoFd(), true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", strpath.c_str(), result); return result; } StatCache::getStatCacheData()->DelStat(nowcache); } S3FS_MALLOCTRIM(0); return result; } static timespec handle_utimens_special_values(timespec ts, timespec now, timespec orig) { if(ts.tv_nsec == UTIME_NOW){ return now; }else if(ts.tv_nsec == UTIME_OMIT){ return orig; }else{ return ts; } } static int s3fs_utimens(const char* _path, const struct timespec ts[2]) { WTF8_ENCODE(path) int result; std::string strpath; std::string newpath; std::string nowcache; headers_t meta; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; S3FS_PRN_INFO("[path=%s][mtime=%lld][ctime/atime=%lld]", path, static_cast(ts[1].tv_sec), static_cast(ts[0].tv_sec)); if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change mtime for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_access(path, W_OK, &stbuf))){ if(0 != check_object_owner(path, &stbuf)){ return result; } } struct timespec now; if(-1 == clock_gettime(static_cast(CLOCK_REALTIME), &now)){ abort(); } #if __APPLE__ struct timespec actime = handle_utimens_special_values(ts[0], now, stbuf.st_ctimespec); struct timespec mtime = handle_utimens_special_values(ts[1], now, stbuf.st_mtimespec); #else struct timespec actime = handle_utimens_special_values(ts[0], now, stbuf.st_ctim); struct timespec mtime = handle_utimens_special_values(ts[1], now, stbuf.st_mtim); #endif if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, &meta, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, &meta); } if(0 != result){ return result; } if(S_ISDIR(stbuf.st_mode) && IS_REPLACEDIR(nDirType)){ // Should rebuild directory object(except new type) // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), stbuf.st_mode, actime.tv_sec, mtime.tv_sec, actime.tv_sec, stbuf.st_uid, stbuf.st_gid))){ return result; } }else{ headers_t updatemeta; updatemeta["x-amz-meta-mtime"] = str(mtime); updatemeta["x-amz-meta-ctime"] = str(actime); updatemeta["x-amz-meta-atime"] = str(actime); updatemeta["x-amz-copy-source"] = urlEncode(service_path + S3fsCred::GetBucket() + get_realpath(strpath.c_str())); updatemeta["x-amz-metadata-directive"] = "REPLACE"; // check opened file handle. // // If the file starts uploading by multipart when the disk capacity is insufficient, // we need to put these header after finishing upload. // Or if the file is only open, we must update to FdEntity's internal meta. // AutoFdEntity autoent; FdEntity* ent; bool need_put_header = true; bool keep_mtime = false; if(NULL != (ent = autoent.OpenExistFdEntity(path))){ if(ent->MergeOrgMeta(updatemeta)){ // meta is changed, but now uploading. // then the meta is pending and accumulated to be put after the upload is complete. S3FS_PRN_INFO("meta pending until upload is complete"); need_put_header = false; ent->SetHoldingMtime(mtime); // If there is data in the Stats cache, update the Stats cache. StatCache::getStatCacheData()->UpdateMetaStats(strpath, updatemeta); }else{ S3FS_PRN_INFO("meta is not pending, but need to keep current mtime."); // [NOTE] // Depending on the order in which write/flush and utimens are called, // the mtime updated here may be overwritten at the time of flush. // To avoid that, set a special flag. // keep_mtime = true; } } if(need_put_header){ // not found opened file. merge_headers(meta, updatemeta, true); // upload meta directly. if(0 != (result = put_headers(strpath.c_str(), meta, true))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); if(keep_mtime){ ent->SetHoldingMtime(mtime); } } } S3FS_MALLOCTRIM(0); return 0; } static int s3fs_utimens_nocopy(const char* _path, const struct timespec ts[2]) { WTF8_ENCODE(path) int result; std::string strpath; std::string newpath; std::string nowcache; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; S3FS_PRN_INFO1("[path=%s][mtime=%lld][atime/ctime=%lld]", path, static_cast(ts[1].tv_sec), static_cast(ts[0].tv_sec)); if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change mtime for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_access(path, W_OK, &stbuf))){ if(0 != check_object_owner(path, &stbuf)){ return result; } } struct timespec now; if(-1 == clock_gettime(static_cast(CLOCK_REALTIME), &now)){ abort(); } #if __APPLE__ struct timespec actime = handle_utimens_special_values(ts[0], now, stbuf.st_ctimespec); struct timespec mtime = handle_utimens_special_values(ts[1], now, stbuf.st_mtimespec); #else struct timespec actime = handle_utimens_special_values(ts[0], now, stbuf.st_ctim); struct timespec mtime = handle_utimens_special_values(ts[1], now, stbuf.st_mtim); #endif // Get attributes if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, NULL, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, NULL); } if(0 != result){ return result; } if(S_ISDIR(stbuf.st_mode)){ // Should rebuild all directory object // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), stbuf.st_mode, actime.tv_sec, mtime.tv_sec, actime.tv_sec, stbuf.st_uid, stbuf.st_gid))){ return result; } }else{ // normal object or directory object of newer version // open & load AutoFdEntity autoent; FdEntity* ent; if(0 != (result = get_local_fent(autoent, &ent, strpath.c_str(), O_RDWR, true))){ S3FS_PRN_ERR("could not open and read file(%s)", strpath.c_str()); return result; } // set mtime/ctime if(0 != (result = ent->SetMCtime(mtime, actime))){ S3FS_PRN_ERR("could not set mtime and ctime to file(%s): result=%d", strpath.c_str(), result); return result; } // set atime if(0 != (result = ent->SetAtime(actime))){ S3FS_PRN_ERR("could not set atime to file(%s): result=%d", strpath.c_str(), result); return result; } // upload if(0 != (result = ent->Flush(autoent.GetPseudoFd(), true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", strpath.c_str(), result); return result; } StatCache::getStatCacheData()->DelStat(nowcache); } S3FS_MALLOCTRIM(0); return result; } static int s3fs_truncate(const char* _path, off_t size) { WTF8_ENCODE(path) int result; headers_t meta; AutoFdEntity autoent; FdEntity* ent = NULL; S3FS_PRN_INFO("[path=%s][size=%lld]", path, static_cast(size)); if(size < 0){ size = 0; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_access(path, W_OK, NULL))){ return result; } // Get file information if(0 == (result = get_object_attribute(path, NULL, &meta))){ // File exists // [NOTE] // If the file exists, the file has already been opened by FUSE before // truncate is called. Then the call below will change the file size. // (When an already open file is changed the file size, FUSE will not // reopen it.) // The Flush is called before this file is closed, so there is no need // to do it here. // if(NULL == (ent = autoent.Open(path, &meta, size, -1, O_RDWR, false, true, AutoLock::NONE))){ S3FS_PRN_ERR("could not open file(%s): errno=%d", path, errno); return -EIO; } ent->UpdateCtime(); #if defined(__APPLE__) // [NOTE] // Only for macos, this truncate calls to "size=0" do not reflect size. // The cause is unknown now, but it can be avoided by flushing the file. // if(0 == size){ if(0 != (result = ent->Flush(autoent.GetPseudoFd(), true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", path, result); return result; } StatCache::getStatCacheData()->DelStat(path); } #endif }else{ // Not found -> Make tmpfile(with size) struct fuse_context* pcxt; if(NULL == (pcxt = fuse_get_context())){ return -EIO; } time_t now = time(NULL); meta["Content-Type"] = std::string("application/octet-stream"); // Static meta["x-amz-meta-mode"] = str(S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO); meta["x-amz-meta-ctime"] = str(now); meta["x-amz-meta-mtime"] = str(now); meta["x-amz-meta-uid"] = str(pcxt->uid); meta["x-amz-meta-gid"] = str(pcxt->gid); if(NULL == (ent = autoent.Open(path, &meta, size, -1, O_RDWR, true, true, AutoLock::NONE))){ S3FS_PRN_ERR("could not open file(%s): errno=%d", path, errno); return -EIO; } if(0 != (result = ent->Flush(autoent.GetPseudoFd(), true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", path, result); return result; } StatCache::getStatCacheData()->DelStat(path); } S3FS_MALLOCTRIM(0); return result; } static int s3fs_open(const char* _path, struct fuse_file_info* fi) { WTF8_ENCODE(path) int result; struct stat st; bool needs_flush = false; S3FS_PRN_INFO("[path=%s][flags=0x%x]", path, fi->flags); if ((fi->flags & O_ACCMODE) == O_RDONLY && fi->flags & O_TRUNC) { return -EACCES; } // [NOTE] // Delete the Stats cache only if the file is not open. // If the file is open, the stats cache will not be deleted as // there are cases where the object does not exist on the server // and only the Stats cache exists. // if(StatCache::getStatCacheData()->HasStat(path)){ if(!FdManager::HasOpenEntityFd(path)){ StatCache::getStatCacheData()->DelStat(path); } } int mask = (O_RDONLY != (fi->flags & O_ACCMODE) ? W_OK : R_OK); if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } result = check_object_access(path, mask, &st); if(-ENOENT == result){ if(0 != (result = check_parent_object_access(path, W_OK))){ return result; } }else if(0 != result){ return result; } if((unsigned int)fi->flags & O_TRUNC){ if(0 != st.st_size){ st.st_size = 0; needs_flush = true; } } if(!S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)){ st.st_mtime = -1; } AutoFdEntity autoent; FdEntity* ent; headers_t meta; get_object_attribute(path, NULL, &meta, true, NULL, true); // no truncate cache if(NULL == (ent = autoent.Open(path, &meta, st.st_size, st.st_mtime, fi->flags, false, true, AutoLock::NONE))){ StatCache::getStatCacheData()->DelStat(path); return -EIO; } if (needs_flush){ time_t now = time(NULL); struct timespec ts = {now, 0}; ent->SetMCtime(ts, ts); if(0 != (result = ent->RowFlush(autoent.GetPseudoFd(), path, true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", path, result); StatCache::getStatCacheData()->DelStat(path); return result; } } fi->fh = autoent.Detach(); // KEEP fdentity open; S3FS_MALLOCTRIM(0); return 0; } static int s3fs_read(const char* _path, char* buf, size_t size, off_t offset, struct fuse_file_info* fi) { WTF8_ENCODE(path) ssize_t res; S3FS_PRN_DBG("[path=%s][size=%zu][offset=%lld][pseudo_fd=%llu]", path, size, static_cast(offset), (unsigned long long)(fi->fh)); AutoFdEntity autoent; FdEntity* ent; if(NULL == (ent = autoent.GetExistFdEntity(path, static_cast(fi->fh)))){ S3FS_PRN_ERR("could not find opened pseudo_fd(=%llu) for path(%s)", (unsigned long long)(fi->fh), path); return -EIO; } // check real file size off_t realsize = 0; if(!ent->GetSize(realsize) || 0 == realsize){ S3FS_PRN_DBG("file size is 0, so break to read."); return 0; } if(0 > (res = ent->Read(static_cast(fi->fh), buf, offset, size, false))){ S3FS_PRN_WARN("failed to read file(%s). result=%zd", path, res); } return static_cast(res); } static int s3fs_write(const char* _path, const char* buf, size_t size, off_t offset, struct fuse_file_info* fi) { WTF8_ENCODE(path) ssize_t res; S3FS_PRN_DBG("[path=%s][size=%zu][offset=%lld][pseudo_fd=%llu]", path, size, static_cast(offset), (unsigned long long)(fi->fh)); AutoFdEntity autoent; FdEntity* ent; if(NULL == (ent = autoent.GetExistFdEntity(path, static_cast(fi->fh)))){ S3FS_PRN_ERR("could not find opened pseudo_fd(%llu) for path(%s)", (unsigned long long)(fi->fh), path); return -EIO; } if(0 > (res = ent->Write(static_cast(fi->fh), buf, offset, size))){ S3FS_PRN_WARN("failed to write file(%s). result=%zd", path, res); } if(max_dirty_data != -1 && ent->BytesModified() >= max_dirty_data){ int flushres; if(0 != (flushres = ent->RowFlush(static_cast(fi->fh), path, true))){ S3FS_PRN_ERR("could not upload file(%s): result=%d", path, flushres); StatCache::getStatCacheData()->DelStat(path); return flushres; } // Punch a hole in the file to recover disk space. if(!ent->PunchHole()){ S3FS_PRN_WARN("could not punching HOLEs to a cache file, but continue."); } } return static_cast(res); } static int s3fs_statfs(const char* _path, struct statvfs* stbuf) { // WTF8_ENCODE(path) stbuf->f_bsize = 16 * 1024 * 1024; stbuf->f_namemax = NAME_MAX; #ifdef __MSYS__ // WinFsp resolves the free space from f_bfree * f_frsize, and the total space from f_blocks * f_frsize (in bytes). stbuf->f_frsize = stbuf->f_bsize; stbuf->f_blocks = INT32_MAX; stbuf->f_bfree = INT32_MAX; #else stbuf->f_blocks = static_cast(~0) / stbuf->f_bsize; stbuf->f_bfree = stbuf->f_blocks; #endif stbuf->f_bavail = stbuf->f_blocks; return 0; } static int s3fs_flush(const char* _path, struct fuse_file_info* fi) { WTF8_ENCODE(path) int result; S3FS_PRN_INFO("[path=%s][pseudo_fd=%llu]", path, (unsigned long long)(fi->fh)); int mask = (O_RDONLY != (fi->flags & O_ACCMODE) ? W_OK : R_OK); if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } result = check_object_access(path, mask, NULL); if(-ENOENT == result){ if(0 != (result = check_parent_object_access(path, W_OK))){ return result; } }else if(0 != result){ return result; } AutoFdEntity autoent; FdEntity* ent; if(NULL != (ent = autoent.GetExistFdEntity(path, static_cast(fi->fh)))){ ent->UpdateMtime(true); // clear the flag not to update mtime. ent->UpdateCtime(); result = ent->Flush(static_cast(fi->fh), false); StatCache::getStatCacheData()->DelStat(path); } S3FS_MALLOCTRIM(0); return result; } // [NOTICE] // Assumption is a valid fd. // static int s3fs_fsync(const char* _path, int datasync, struct fuse_file_info* fi) { WTF8_ENCODE(path) int result = 0; S3FS_PRN_INFO("[path=%s][pseudo_fd=%llu]", path, (unsigned long long)(fi->fh)); AutoFdEntity autoent; FdEntity* ent; if(NULL != (ent = autoent.GetExistFdEntity(path, static_cast(fi->fh)))){ if(0 == datasync){ ent->UpdateMtime(); ent->UpdateCtime(); } result = ent->Flush(static_cast(fi->fh), false); } S3FS_MALLOCTRIM(0); // Issue 320: Delete stat cache entry because st_size may have changed. StatCache::getStatCacheData()->DelStat(path); return result; } static int s3fs_release(const char* _path, struct fuse_file_info* fi) { WTF8_ENCODE(path) S3FS_PRN_INFO("[path=%s][pseudo_fd=%llu]", path, (unsigned long long)(fi->fh)); // [NOTE] // All opened file's stats is cached with no truncate flag. // Thus we unset it here. StatCache::getStatCacheData()->ChangeNoTruncateFlag(std::string(path), false); // [NOTICE] // At first, we remove stats cache. // Because fuse does not wait for response from "release" function. :-( // And fuse runs next command before this function returns. // Thus we call deleting stats function ASAP. // if((fi->flags & O_RDWR) || (fi->flags & O_WRONLY)){ StatCache::getStatCacheData()->DelStat(path); } { // scope for AutoFdEntity AutoFdEntity autoent; // [NOTE] // The pseudo fd stored in fi->fh is attached to AutoFdEntry so that it can be // destroyed here. // if(!autoent.Attach(path, static_cast(fi->fh))){ S3FS_PRN_ERR("could not find pseudo_fd(%llu) for path(%s)", (unsigned long long)(fi->fh), path); return -EIO; } } // check - for debug if(S3fsLog::IsS3fsLogDbg()){ if(FdManager::HasOpenEntityFd(path)){ S3FS_PRN_WARN("file(%s) is still opened(another pseudo fd is opend).", path); } } S3FS_MALLOCTRIM(0); return 0; } static int s3fs_opendir(const char* _path, struct fuse_file_info* fi) { WTF8_ENCODE(path) int result; int mask = (O_RDONLY != (fi->flags & O_ACCMODE) ? W_OK : R_OK); S3FS_PRN_INFO("[path=%s][flags=0x%x]", path, fi->flags); if(0 == (result = check_object_access(path, mask, NULL))){ result = check_parent_object_access(path, X_OK); } S3FS_MALLOCTRIM(0); return result; } static bool multi_head_callback(S3fsCurl* s3fscurl) { if(!s3fscurl){ return false; } std::string saved_path = s3fscurl->GetSpecialSavedPath(); if(!StatCache::getStatCacheData()->AddStat(saved_path, *(s3fscurl->GetResponseHeaders()))){ S3FS_PRN_ERR("failed adding stat cache [path=%s]", saved_path.c_str()); return false; } return true; } static S3fsCurl* multi_head_retry_callback(S3fsCurl* s3fscurl) { if(!s3fscurl){ return NULL; } size_t ssec_key_pos= s3fscurl->GetLastPreHeadSeecKeyPos(); int retry_count = s3fscurl->GetMultipartRetryCount(); // retry next sse key. // if end of sse key, set retry master count is up. ssec_key_pos = (ssec_key_pos == static_cast(-1) ? 0 : ssec_key_pos + 1); if(0 == S3fsCurl::GetSseKeyCount() || S3fsCurl::GetSseKeyCount() <= ssec_key_pos){ if(s3fscurl->IsOverMultipartRetryCount()){ S3FS_PRN_ERR("Over retry count(%d) limit(%s).", s3fscurl->GetMultipartRetryCount(), s3fscurl->GetSpecialSavedPath().c_str()); return NULL; } ssec_key_pos = -1; retry_count++; } S3fsCurl* newcurl = new S3fsCurl(s3fscurl->IsUseAhbe()); std::string path = s3fscurl->GetPath(); std::string base_path = s3fscurl->GetBasePath(); std::string saved_path = s3fscurl->GetSpecialSavedPath(); if(!newcurl->PreHeadRequest(path, base_path, saved_path, ssec_key_pos)){ S3FS_PRN_ERR("Could not duplicate curl object(%s).", saved_path.c_str()); delete newcurl; return NULL; } newcurl->SetMultipartRetryCount(retry_count); return newcurl; } static int readdir_multi_head(const char* path, const S3ObjList& head, void* buf, fuse_fill_dir_t filler) { S3fsMultiCurl curlmulti(S3fsCurl::GetMaxMultiRequest()); s3obj_list_t headlist; s3obj_list_t fillerlist; int result = 0; S3FS_PRN_INFO1("[path=%s][list=%zu]", path, headlist.size()); // Make base path list. head.GetNameList(headlist, true, false); // get name with "/". // Initialize S3fsMultiCurl curlmulti.SetSuccessCallback(multi_head_callback); curlmulti.SetRetryCallback(multi_head_retry_callback); s3obj_list_t::iterator iter; fillerlist.clear(); // Make single head request(with max). for(iter = headlist.begin(); headlist.end() != iter; iter = headlist.erase(iter)){ std::string disppath = path + (*iter); std::string etag = head.GetETag((*iter).c_str()); std::string fillpath = disppath; if('/' == *disppath.rbegin()){ fillpath.erase(fillpath.length() -1); } fillerlist.push_back(fillpath); if(StatCache::getStatCacheData()->HasStat(disppath, etag.c_str())){ continue; } // First check for directory, start checking "not SSE-C". // If checking failed, retry to check with "SSE-C" by retry callback func when SSE-C mode. S3fsCurl* s3fscurl = new S3fsCurl(); if(!s3fscurl->PreHeadRequest(disppath, (*iter), disppath)){ // target path = cache key path.(ex "dir/") S3FS_PRN_WARN("Could not make curl object for head request(%s).", disppath.c_str()); delete s3fscurl; continue; } if(!curlmulti.SetS3fsCurlObject(s3fscurl)){ S3FS_PRN_WARN("Could not make curl object into multi curl(%s).", disppath.c_str()); delete s3fscurl; continue; } } // Multi request if(0 != (result = curlmulti.Request())){ // If result is -EIO, it is something error occurred. // This case includes that the object is encrypting(SSE) and s3fs does not have keys. // So s3fs set result to 0 in order to continue the process. if(-EIO == result){ S3FS_PRN_WARN("error occurred in multi request(errno=%d), but continue...", result); result = 0; }else{ S3FS_PRN_ERR("error occurred in multi request(errno=%d).", result); return result; } } // populate fuse buffer // here is best position, because a case is cache size < files in directory // for(iter = fillerlist.begin(); fillerlist.end() != iter; ++iter){ struct stat st; bool in_cache = StatCache::getStatCacheData()->GetStat((*iter), &st); std::string bpath = mybasename((*iter)); if(use_wtf8){ bpath = s3fs_wtf8_decode(bpath); } if(in_cache){ filler(buf, bpath.c_str(), &st, 0); }else{ S3FS_PRN_INFO2("Could not find %s file in stat cache.", (*iter).c_str()); filler(buf, bpath.c_str(), 0, 0); } } return result; } static int s3fs_readdir(const char* _path, void* buf, fuse_fill_dir_t filler, off_t offset, struct fuse_file_info* fi) { WTF8_ENCODE(path) S3ObjList head; int result; S3FS_PRN_INFO("[path=%s]", path); if(0 != (result = check_object_access(path, R_OK, NULL))){ return result; } // get a list of all the objects if((result = list_bucket(path, head, "/")) != 0){ S3FS_PRN_ERR("list_bucket returns error(%d).", result); return result; } // force to add "." and ".." name. filler(buf, ".", 0, 0); filler(buf, "..", 0, 0); if(head.IsEmpty()){ return 0; } // Send multi head request for stats caching. std::string strpath = path; if(strcmp(path, "/") != 0){ strpath += "/"; } if(0 != (result = readdir_multi_head(strpath.c_str(), head, buf, filler))){ S3FS_PRN_ERR("readdir_multi_head returns error(%d).", result); } S3FS_MALLOCTRIM(0); return result; } static int list_bucket(const char* path, S3ObjList& head, const char* delimiter, bool check_content_only) { std::string s3_realpath; std::string query_delimiter; std::string query_prefix; std::string query_maxkey; std::string next_continuation_token; std::string next_marker; bool truncated = true; S3fsCurl s3fscurl; xmlDocPtr doc; S3FS_PRN_INFO1("[path=%s]", path); if(delimiter && 0 < strlen(delimiter)){ query_delimiter += "delimiter="; query_delimiter += delimiter; query_delimiter += "&"; } query_prefix += "&prefix="; s3_realpath = get_realpath(path); if(s3_realpath.empty() || '/' != *s3_realpath.rbegin()){ // last word must be "/" query_prefix += urlEncode(s3_realpath.substr(1) + "/"); }else{ query_prefix += urlEncode(s3_realpath.substr(1)); } if (check_content_only){ // Just need to know if there are child objects in dir // For dir with children, expect "dir/" and "dir/child" query_maxkey += "max-keys=2"; }else{ query_maxkey += "max-keys=" + str(max_keys_list_object); } while(truncated){ // append parameters to query in alphabetical order std::string each_query; if(!next_continuation_token.empty()){ each_query += "continuation-token=" + urlEncode(next_continuation_token) + "&"; next_continuation_token = ""; } each_query += query_delimiter; if(S3fsCurl::IsListObjectsV2()){ each_query += "list-type=2&"; } if(!next_marker.empty()){ each_query += "marker=" + urlEncode(next_marker) + "&"; next_marker = ""; } each_query += query_maxkey; each_query += query_prefix; // request int result; if(0 != (result = s3fscurl.ListBucketRequest(path, each_query.c_str()))){ S3FS_PRN_ERR("ListBucketRequest returns with error."); return result; } BodyData* body = s3fscurl.GetBodyData(); // xmlDocPtr if(NULL == (doc = xmlReadMemory(body->str(), static_cast(body->size()), "", NULL, 0))){ S3FS_PRN_ERR("xmlReadMemory returns with error."); return -EIO; } if(0 != append_objects_from_xml(path, doc, head)){ S3FS_PRN_ERR("append_objects_from_xml returns with error."); xmlFreeDoc(doc); return -EIO; } if(true == (truncated = is_truncated(doc))){ xmlChar* tmpch; if(NULL != (tmpch = get_next_continuation_token(doc))){ next_continuation_token = (char*)tmpch; xmlFree(tmpch); }else if(NULL != (tmpch = get_next_marker(doc))){ next_marker = (char*)tmpch; xmlFree(tmpch); } if(next_continuation_token.empty() && next_marker.empty()){ // If did not specify "delimiter", s3 did not return "NextMarker". // On this case, can use last name for next marker. // std::string lastname; if(!head.GetLastName(lastname)){ S3FS_PRN_WARN("Could not find next marker, thus break loop."); truncated = false; }else{ next_marker = s3_realpath.substr(1); if(s3_realpath.empty() || '/' != *s3_realpath.rbegin()){ next_marker += "/"; } next_marker += lastname; } } } S3FS_XMLFREEDOC(doc); // reset(initialize) curl object s3fscurl.DestroyCurlHandle(); if(check_content_only){ break; } } S3FS_MALLOCTRIM(0); return 0; } static int remote_mountpath_exists(const char* path) { struct stat stbuf; int result; S3FS_PRN_INFO1("[path=%s]", path); // getattr will prefix the path with the remote mountpoint if(0 != (result = get_object_attribute("/", &stbuf, NULL))){ return result; } if(!S_ISDIR(stbuf.st_mode)){ return -ENOTDIR; } return 0; } static void free_xattrs(xattrs_t& xattrs) { for(xattrs_t::iterator iter = xattrs.begin(); iter != xattrs.end(); ++iter){ delete iter->second; } xattrs.clear(); } static bool parse_xattr_keyval(const std::string& xattrpair, std::string& key, PXATTRVAL& pval) { // parse key and value size_t pos; std::string tmpval; if(std::string::npos == (pos = xattrpair.find_first_of(':'))){ S3FS_PRN_ERR("one of xattr pair(%s) is wrong format.", xattrpair.c_str()); return false; } key = xattrpair.substr(0, pos); tmpval = xattrpair.substr(pos + 1); if(!takeout_str_dquart(key) || !takeout_str_dquart(tmpval)){ S3FS_PRN_ERR("one of xattr pair(%s) is wrong format.", xattrpair.c_str()); return false; } pval = new XATTRVAL; pval->length = 0; pval->pvalue = s3fs_decode64(tmpval.c_str(), tmpval.size(), &pval->length); return true; } static size_t parse_xattrs(const std::string& strxattrs, xattrs_t& xattrs) { xattrs.clear(); // decode std::string jsonxattrs = urlDecode(strxattrs); // get from "{" to "}" std::string restxattrs; { size_t startpos; size_t endpos = std::string::npos; if(std::string::npos != (startpos = jsonxattrs.find_first_of('{'))){ endpos = jsonxattrs.find_last_of('}'); } if(startpos == std::string::npos || endpos == std::string::npos || endpos <= startpos){ S3FS_PRN_WARN("xattr header(%s) is not json format.", jsonxattrs.c_str()); return 0; } restxattrs = jsonxattrs.substr(startpos + 1, endpos - (startpos + 1)); } // parse each key:val for(size_t pair_nextpos = restxattrs.find_first_of(','); !restxattrs.empty(); restxattrs = (pair_nextpos != std::string::npos ? restxattrs.substr(pair_nextpos + 1) : std::string("")), pair_nextpos = restxattrs.find_first_of(',')){ std::string pair = pair_nextpos != std::string::npos ? restxattrs.substr(0, pair_nextpos) : restxattrs; std::string key; PXATTRVAL pval = NULL; if(!parse_xattr_keyval(pair, key, pval)){ // something format error, so skip this. continue; } xattrs[key] = pval; } return xattrs.size(); } static std::string build_xattrs(const xattrs_t& xattrs) { std::string strxattrs("{"); bool is_set = false; for(xattrs_t::const_iterator iter = xattrs.begin(); iter != xattrs.end(); ++iter){ if(is_set){ strxattrs += ','; }else{ is_set = true; } strxattrs += '\"'; strxattrs += iter->first; strxattrs += "\":\""; if(iter->second){ char* base64val = s3fs_base64((iter->second)->pvalue, (iter->second)->length); if(base64val){ strxattrs += base64val; delete[] base64val; } } strxattrs += '\"'; } strxattrs += '}'; strxattrs = urlEncode(strxattrs); return strxattrs; } static int set_xattrs_to_header(headers_t& meta, const char* name, const char* value, size_t size, int flags) { std::string strxattrs; xattrs_t xattrs; headers_t::iterator iter; if(meta.end() == (iter = meta.find("x-amz-meta-xattr"))){ #if defined(XATTR_REPLACE) if(XATTR_REPLACE == (flags & XATTR_REPLACE)){ // there is no xattr header but flags is replace, so failure. return -ENOATTR; } #endif }else{ #if defined(XATTR_CREATE) if(XATTR_CREATE == (flags & XATTR_CREATE)){ // found xattr header but flags is only creating, so failure. return -EEXIST; } #endif strxattrs = iter->second; } // get map as xattrs_t parse_xattrs(strxattrs, xattrs); // add name(do not care overwrite and empty name/value) xattrs_t::iterator xiter; if(xattrs.end() != (xiter = xattrs.find(std::string(name)))){ // found same head. free value. delete xiter->second; } PXATTRVAL pval = new XATTRVAL; pval->length = size; if(0 < size){ pval->pvalue = new unsigned char[size]; memcpy(pval->pvalue, value, size); }else{ pval->pvalue = NULL; } xattrs[std::string(name)] = pval; // build new strxattrs(not encoded) and set it to headers_t meta["x-amz-meta-xattr"] = build_xattrs(xattrs); free_xattrs(xattrs); return 0; } #if defined(__APPLE__) static int s3fs_setxattr(const char* path, const char* name, const char* value, size_t size, int flags, uint32_t position) #else static int s3fs_setxattr(const char* path, const char* name, const char* value, size_t size, int flags) #endif { S3FS_PRN_INFO("[path=%s][name=%s][value=%p][size=%zu][flags=0x%x]", path, name, value, size, flags); if((value && 0 == size) || (!value && 0 < size)){ S3FS_PRN_ERR("Wrong parameter: value(%p), size(%zu)", value, size); return 0; } #if defined(__APPLE__) if (position != 0) { // No resource fork support return -EINVAL; } #endif int result; std::string strpath; std::string newpath; std::string nowcache; headers_t meta; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change mode for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_owner(path, &stbuf))){ return result; } if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, &meta, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, &meta); } if(0 != result){ return result; } if(S_ISDIR(stbuf.st_mode) && IS_REPLACEDIR(nDirType)){ // Should rebuild directory object(except new type) // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), stbuf.st_mode, stbuf.st_atime, stbuf.st_mtime, stbuf.st_ctime, stbuf.st_uid, stbuf.st_gid))){ return result; } // need to set xattr header for directory. strpath = newpath; nowcache = strpath; } // set xattr all object headers_t updatemeta; updatemeta["x-amz-meta-ctime"] = str(time(NULL)); updatemeta["x-amz-copy-source"] = urlEncode(service_path + S3fsCred::GetBucket() + get_realpath(strpath.c_str())); updatemeta["x-amz-metadata-directive"] = "REPLACE"; // check opened file handle. // // If the file starts uploading by multipart when the disk capacity is insufficient, // we need to put these header after finishing upload. // Or if the file is only open, we must update to FdEntity's internal meta. // AutoFdEntity autoent; FdEntity* ent; bool need_put_header = true; if(NULL != (ent = autoent.OpenExistFdEntity(path))){ // get xattr and make new xattr std::string strxattr; if(ent->GetXattr(strxattr)){ updatemeta["x-amz-meta-xattr"] = strxattr; }else{ // [NOTE] // Set an empty xattr. // This requires the key to be present in order to add xattr. ent->SetXattr(strxattr); } if(0 != (result = set_xattrs_to_header(updatemeta, name, value, size, flags))){ return result; } if(ent->MergeOrgMeta(updatemeta)){ // meta is changed, but now uploading. // then the meta is pending and accumulated to be put after the upload is complete. S3FS_PRN_INFO("meta pending until upload is complete"); need_put_header = false; // If there is data in the Stats cache, update the Stats cache. StatCache::getStatCacheData()->UpdateMetaStats(strpath, updatemeta); } } if(need_put_header){ // not found opened file. if(0 != (result = set_xattrs_to_header(meta, name, value, size, flags))){ return result; } merge_headers(meta, updatemeta, true); // upload meta directly. if(0 != (result = put_headers(strpath.c_str(), meta, true))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); } return 0; } #if defined(__APPLE__) static int s3fs_getxattr(const char* path, const char* name, char* value, size_t size, uint32_t position) #else static int s3fs_getxattr(const char* path, const char* name, char* value, size_t size) #endif { S3FS_PRN_INFO("[path=%s][name=%s][value=%p][size=%zu]", path, name, value, size); if(!path || !name){ return -EIO; } #if defined(__APPLE__) if (position != 0) { // No resource fork support return -EINVAL; } #endif int result; headers_t meta; xattrs_t xattrs; // check parent directory attribute. if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } // get headers if(0 != (result = get_object_attribute(path, NULL, &meta))){ return result; } // get xattrs headers_t::iterator hiter = meta.find("x-amz-meta-xattr"); if(meta.end() == hiter){ // object does not have xattrs return -ENOATTR; } std::string strxattrs = hiter->second; parse_xattrs(strxattrs, xattrs); // search name std::string strname = name; xattrs_t::iterator xiter = xattrs.find(strname); if(xattrs.end() == xiter){ // not found name in xattrs free_xattrs(xattrs); return -ENOATTR; } // decode size_t length = 0; unsigned char* pvalue = NULL; if(NULL != xiter->second){ length = xiter->second->length; pvalue = xiter->second->pvalue; } if(0 < size){ if(static_cast(size) < length){ // over buffer size free_xattrs(xattrs); return -ERANGE; } if(pvalue){ memcpy(value, pvalue, length); } } free_xattrs(xattrs); return static_cast(length); } static int s3fs_listxattr(const char* path, char* list, size_t size) { S3FS_PRN_INFO("[path=%s][list=%p][size=%zu]", path, list, size); if(!path){ return -EIO; } int result; headers_t meta; xattrs_t xattrs; // check parent directory attribute. if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } // get headers if(0 != (result = get_object_attribute(path, NULL, &meta))){ return result; } // get xattrs headers_t::iterator iter; if(meta.end() == (iter = meta.find("x-amz-meta-xattr"))){ // object does not have xattrs return 0; } std::string strxattrs = iter->second; parse_xattrs(strxattrs, xattrs); // calculate total name length size_t total = 0; for(xattrs_t::const_iterator xiter = xattrs.begin(); xiter != xattrs.end(); ++xiter){ if(!xiter->first.empty()){ total += xiter->first.length() + 1; } } if(0 == total){ free_xattrs(xattrs); return 0; } // check parameters if(0 == size){ free_xattrs(xattrs); return static_cast(total); } if(!list || size < total){ free_xattrs(xattrs); return -ERANGE; } // copy to list char* setpos = list; for(xattrs_t::const_iterator xiter = xattrs.begin(); xiter != xattrs.end(); ++xiter){ if(!xiter->first.empty()){ strcpy(setpos, xiter->first.c_str()); setpos = &setpos[strlen(setpos) + 1]; } } free_xattrs(xattrs); return static_cast(total); } static int s3fs_removexattr(const char* path, const char* name) { S3FS_PRN_INFO("[path=%s][name=%s]", path, name); if(!path || !name){ return -EIO; } int result; std::string strpath; std::string newpath; std::string nowcache; headers_t meta; xattrs_t xattrs; struct stat stbuf; dirtype nDirType = DIRTYPE_UNKNOWN; if(0 == strcmp(path, "/")){ S3FS_PRN_ERR("Could not change mode for mount point."); return -EIO; } if(0 != (result = check_parent_object_access(path, X_OK))){ return result; } if(0 != (result = check_object_owner(path, &stbuf))){ return result; } if(S_ISDIR(stbuf.st_mode)){ result = chk_dir_object_type(path, newpath, strpath, nowcache, &meta, &nDirType); }else{ strpath = path; nowcache = strpath; result = get_object_attribute(strpath.c_str(), NULL, &meta); } if(0 != result){ return result; } // get xattrs headers_t::iterator hiter = meta.find("x-amz-meta-xattr"); if(meta.end() == hiter){ // object does not have xattrs return -ENOATTR; } std::string strxattrs = hiter->second; parse_xattrs(strxattrs, xattrs); // check name xattrs std::string strname = name; xattrs_t::iterator xiter = xattrs.find(strname); if(xattrs.end() == xiter){ free_xattrs(xattrs); return -ENOATTR; } // make new header_t after deleting name xattr delete xiter->second; xattrs.erase(xiter); if(S_ISDIR(stbuf.st_mode) && IS_REPLACEDIR(nDirType)){ // Should rebuild directory object(except new type) // Need to remove old dir("dir" etc) and make new dir("dir/") // At first, remove directory old object if(0 != (result = remove_old_type_dir(strpath, nDirType))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); // Make new directory object("dir/") if(0 != (result = create_directory_object(newpath.c_str(), stbuf.st_mode, stbuf.st_atime, stbuf.st_mtime, stbuf.st_ctime, stbuf.st_uid, stbuf.st_gid))){ free_xattrs(xattrs); return result; } // need to set xattr header for directory. strpath = newpath; nowcache = strpath; } // set xattr all object headers_t updatemeta; updatemeta["x-amz-copy-source"] = urlEncode(service_path + S3fsCred::GetBucket() + get_realpath(strpath.c_str())); updatemeta["x-amz-metadata-directive"] = "REPLACE"; if(!xattrs.empty()){ updatemeta["x-amz-meta-xattr"] = build_xattrs(xattrs); }else{ updatemeta["x-amz-meta-xattr"] = std::string(""); // This is a special case. If empty, this header will eventually be removed. } free_xattrs(xattrs); // check opened file handle. // // If the file starts uploading by multipart when the disk capacity is insufficient, // we need to put these header after finishing upload. // Or if the file is only open, we must update to FdEntity's internal meta. // AutoFdEntity autoent; FdEntity* ent; bool need_put_header = true; if(NULL != (ent = autoent.OpenExistFdEntity(path))){ if(ent->MergeOrgMeta(updatemeta)){ // meta is changed, but now uploading. // then the meta is pending and accumulated to be put after the upload is complete. S3FS_PRN_INFO("meta pending until upload is complete"); need_put_header = false; // If there is data in the Stats cache, update the Stats cache. StatCache::getStatCacheData()->UpdateMetaStats(strpath, updatemeta); } } if(need_put_header){ // not found opened file. if(updatemeta["x-amz-meta-xattr"].empty()){ updatemeta.erase("x-amz-meta-xattr"); } merge_headers(meta, updatemeta, true); // upload meta directly. if(0 != (result = put_headers(strpath.c_str(), meta, true))){ return result; } StatCache::getStatCacheData()->DelStat(nowcache); } return 0; } // s3fs_init calls this function to exit cleanly from the fuse event loop. // // There's no way to pass an exit status to the high-level event loop API, so // this function stores the exit value in a global for main() static void s3fs_exit_fuseloop(int exit_status) { S3FS_PRN_ERR("Exiting FUSE event loop due to errors\n"); s3fs_init_deferred_exit_status = exit_status; struct fuse_context *ctx = fuse_get_context(); if (NULL != ctx) { fuse_exit(ctx->fuse); } } static void* s3fs_init(struct fuse_conn_info* conn) { S3FS_PRN_INIT_INFO("init v%s(commit:%s) with %s", VERSION, COMMIT_HASH_VAL, s3fs_crypt_lib_name()); // cache(remove cache dirs at first) if(is_remove_cache && (!CacheFileStat::DeleteCacheFileStatDirectory() || !FdManager::DeleteCacheDirectory())){ S3FS_PRN_DBG("Could not initialize cache directory."); } // check loading IAM role name if(ps3fscred->IsIAMRoleMetadataType()){ // load IAM role name from http://169.254.169.254/latest/meta-data/iam/security-credentials // S3fsCurl s3fscurl; if(!s3fscurl.LoadIAMRoleFromMetaData()){ S3FS_PRN_CRIT("could not load IAM role name from meta data."); s3fs_exit_fuseloop(EXIT_FAILURE); return NULL; } S3FS_PRN_INFO("loaded IAM role name = %s", ps3fscred->GetIAMRole().c_str()); } // Check Bucket { int result; if(EXIT_SUCCESS != (result = s3fs_check_service())){ s3fs_exit_fuseloop(result); return NULL; } } // Investigate system capabilities #ifndef __APPLE__ if((unsigned int)conn->capable & FUSE_CAP_ATOMIC_O_TRUNC){ conn->want |= FUSE_CAP_ATOMIC_O_TRUNC; } #endif if((unsigned int)conn->capable & FUSE_CAP_BIG_WRITES){ conn->want |= FUSE_CAP_BIG_WRITES; } // Signal object if(!S3fsSignals::Initialize()){ S3FS_PRN_ERR("Failed to initialize signal object, but continue..."); } return NULL; } static void s3fs_destroy(void*) { S3FS_PRN_INFO("destroy"); // Signal object if(!S3fsSignals::Destroy()){ S3FS_PRN_WARN("Failed to clean up signal object."); } // cache(remove at last) if(is_remove_cache && (!CacheFileStat::DeleteCacheFileStatDirectory() || !FdManager::DeleteCacheDirectory())){ S3FS_PRN_WARN("Could not remove cache directory."); } } static int s3fs_access(const char* path, int mask) { S3FS_PRN_INFO("[path=%s][mask=%s%s%s%s]", path, ((mask & R_OK) == R_OK) ? "R_OK " : "", ((mask & W_OK) == W_OK) ? "W_OK " : "", ((mask & X_OK) == X_OK) ? "X_OK " : "", (mask == F_OK) ? "F_OK" : ""); int result = check_object_access(path, mask, NULL); S3FS_MALLOCTRIM(0); return result; } // // If calling with wrong region, s3fs gets following error body as 400 error code. // " // AuthorizationHeaderMalformed // The authorization header is malformed; the region 'us-east-1' is wrong; expecting 'ap-northeast-1' // ap-northeast-1 // ... // ... // " // // So this is cheap code but s3fs should get correct region automatically. // static bool check_region_error(const char* pbody, size_t len, std::string& expectregion) { if(!pbody){ return false; } std::string code; if(!simple_parse_xml(pbody, len, "Code", code) || code != "AuthorizationHeaderMalformed"){ return false; } if(!simple_parse_xml(pbody, len, "Region", expectregion)){ return false; } return true; } static bool check_endpoint_error(const char* pbody, size_t len, std::string& expectendpoint) { if(!pbody){ return false; } std::string code; if(!simple_parse_xml(pbody, len, "Code", code) || code != "PermanentRedirect"){ return false; } if(!simple_parse_xml(pbody, len, "Endpoint", expectendpoint)){ return false; } return true; } static int s3fs_check_service() { S3FS_PRN_INFO("check services."); // At first time for access S3, we check IAM role if it sets. if(!ps3fscred->CheckIAMCredentialUpdate()){ S3FS_PRN_CRIT("Failed to check IAM role name(%s).", ps3fscred->GetIAMRole().c_str()); return EXIT_FAILURE; } S3fsCurl s3fscurl; int res; if(0 > (res = s3fscurl.CheckBucket())){ // get response code long responseCode = s3fscurl.GetLastResponseCode(); // check wrong endpoint, and automatically switch endpoint if(300 <= responseCode && responseCode < 500){ // check region error(for putting message or retrying) BodyData* body = s3fscurl.GetBodyData(); std::string expectregion; std::string expectendpoint; if(check_region_error(body->str(), body->size(), expectregion)){ // [NOTE] // If endpoint is not specified(using us-east-1 region) and // an error is encountered accessing a different region, we // will retry the check on the expected region. // see) https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingBucket.html#access-bucket-intro // if(is_specified_endpoint){ const char* tmp_expect_ep = expectregion.c_str(); S3FS_PRN_CRIT("The bucket region is not '%s', it is correctly '%s'. You should specify 'endpoint=%s' option.", endpoint.c_str(), tmp_expect_ep, tmp_expect_ep); }else{ // current endpoint is wrong, so try to connect to expected region. S3FS_PRN_CRIT("Failed to connect region '%s'(default), so retry to connect region '%s'.", endpoint.c_str(), expectregion.c_str()); endpoint = expectregion; if(S3fsCurl::GetSignatureType() == V4_ONLY || S3fsCurl::GetSignatureType() == V2_OR_V4){ if(s3host == "http://s3.amazonaws.com"){ s3host = "http://s3-" + endpoint + ".amazonaws.com"; }else if(s3host == "https://s3.amazonaws.com"){ s3host = "https://s3-" + endpoint + ".amazonaws.com"; } } // retry to check with new endpoint s3fscurl.DestroyCurlHandle(); res = s3fscurl.CheckBucket(); responseCode = s3fscurl.GetLastResponseCode(); } }else if(check_endpoint_error(body->str(), body->size(), expectendpoint)){ S3FS_PRN_ERR("S3 service returned PermanentRedirect with endpoint: %s", expectendpoint.c_str()); return EXIT_FAILURE; } } // try signature v2 if(0 > res && (responseCode == 400 || responseCode == 403) && S3fsCurl::GetSignatureType() == V2_OR_V4){ // switch sigv2 S3FS_PRN_CRIT("Failed to connect by sigv4, so retry to connect by signature version 2."); S3fsCurl::SetSignatureType(V2_ONLY); // retry to check with sigv2 s3fscurl.DestroyCurlHandle(); res = s3fscurl.CheckBucket(); responseCode = s3fscurl.GetLastResponseCode(); } // check errors(after retrying) if(0 > res && responseCode != 200 && responseCode != 301){ if(responseCode == 400){ S3FS_PRN_CRIT("Bad Request(host=%s) - result of checking service.", s3host.c_str()); }else if(responseCode == 403){ S3FS_PRN_CRIT("invalid credentials(host=%s) - result of checking service.", s3host.c_str()); }else if(responseCode == 404){ S3FS_PRN_CRIT("bucket or key not found(host=%s) - result of checking service.", s3host.c_str()); }else{ // another error S3FS_PRN_CRIT("unable to connect(host=%s) - result of checking service.", s3host.c_str()); } return EXIT_FAILURE; } } s3fscurl.DestroyCurlHandle(); // make sure remote mountpath exists and is a directory if(!mount_prefix.empty()){ if(remote_mountpath_exists(mount_prefix.c_str()) != 0){ S3FS_PRN_CRIT("remote mountpath %s not found.", mount_prefix.c_str()); return EXIT_FAILURE; } } S3FS_MALLOCTRIM(0); return EXIT_SUCCESS; } // // Check & Set attributes for mount point. // static bool set_mountpoint_attribute(struct stat& mpst) { mp_uid = geteuid(); mp_gid = getegid(); mp_mode = S_IFDIR | (allow_other ? (is_mp_umask ? (~mp_umask & (S_IRWXU | S_IRWXG | S_IRWXO)) : (S_IRWXU | S_IRWXG | S_IRWXO)) : S_IRWXU); // In MSYS2 environment with WinFsp, it is not supported to change mode of mount point. // Doing that forcely will occurs permission problem, so disabling it. #ifdef __MSYS__ return true; #else S3FS_PRN_INFO2("PROC(uid=%u, gid=%u) - MountPoint(uid=%u, gid=%u, mode=%04o)", (unsigned int)mp_uid, (unsigned int)mp_gid, (unsigned int)(mpst.st_uid), (unsigned int)(mpst.st_gid), mpst.st_mode); // check owner if(0 == mp_uid || mpst.st_uid == mp_uid){ return true; } // check group permission if(mpst.st_gid == mp_gid || 1 == is_uid_include_group(mp_uid, mpst.st_gid)){ if(S_IRWXG == (mpst.st_mode & S_IRWXG)){ return true; } } // check other permission if(S_IRWXO == (mpst.st_mode & S_IRWXO)){ return true; } return false; #endif } // // Set bucket and mount_prefix based on passed bucket name. // static int set_bucket(const char* arg) { char *bucket_name = (char*)arg; if(strstr(arg, ":")){ if(strstr(arg, "://")){ S3FS_PRN_EXIT("bucket name and path(\"%s\") is wrong, it must be \"bucket[:/path]\".", arg); return -1; } if(!S3fsCred::SetBucket(strtok(bucket_name, ":"))){ S3FS_PRN_EXIT("bucket name and path(\"%s\") is wrong, it must be \"bucket[:/path]\".", arg); return -1; } char* pmount_prefix = strtok(NULL, ""); if(pmount_prefix){ if(0 == strlen(pmount_prefix) || '/' != pmount_prefix[0]){ S3FS_PRN_EXIT("path(%s) must be prefix \"/\".", pmount_prefix); return -1; } mount_prefix = pmount_prefix; // remove trailing slash if(mount_prefix[mount_prefix.size() - 1] == '/'){ mount_prefix.erase(mount_prefix.size() - 1); } } }else{ if(!S3fsCred::SetBucket(arg)){ S3FS_PRN_EXIT("bucket name and path(\"%s\") is wrong, it must be \"bucket[:/path]\".", arg); return -1; } } return 0; } // This is repeatedly called by the fuse option parser // if the key is equal to FUSE_OPT_KEY_OPT, it's an option passed in prefixed by // '-' or '--' e.g.: -f -d -ousecache=/tmp // // if the key is equal to FUSE_OPT_KEY_NONOPT, it's either the bucket name // or the mountpoint. The bucket name will always come before the mountpoint static int my_fuse_opt_proc(void* data, const char* arg, int key, struct fuse_args* outargs) { int ret; if(key == FUSE_OPT_KEY_NONOPT){ // the first NONOPT option is the bucket name if(S3fsCred::GetBucket().empty()){ if ((ret = set_bucket(arg))){ return ret; } return 0; }else if (!strcmp(arg, "s3fs")) { return 0; } // the second NONOPT option is the mountpoint(not utility mode) if(mountpoint.empty() && NO_UTILITY_MODE == utility_mode){ // save the mountpoint and do some basic error checking mountpoint = arg; struct stat stbuf; // In MSYS2 environment with WinFsp, it is not needed to create the mount point before mounting. // Also it causes a conflict with WinFsp's validation, so disabling it. #ifdef __MSYS__ memset(&stbuf, 0, sizeof stbuf); set_mountpoint_attribute(stbuf); #else if(stat(arg, &stbuf) == -1){ S3FS_PRN_EXIT("unable to access MOUNTPOINT %s: %s", mountpoint.c_str(), strerror(errno)); return -1; } if(!(S_ISDIR(stbuf.st_mode))){ S3FS_PRN_EXIT("MOUNTPOINT: %s is not a directory.", mountpoint.c_str()); return -1; } if(!set_mountpoint_attribute(stbuf)){ S3FS_PRN_EXIT("MOUNTPOINT: %s permission denied.", mountpoint.c_str()); return -1; } if(!nonempty){ struct dirent *ent; DIR *dp = opendir(mountpoint.c_str()); if(dp == NULL){ S3FS_PRN_EXIT("failed to open MOUNTPOINT: %s: %s", mountpoint.c_str(), strerror(errno)); return -1; } while((ent = readdir(dp)) != NULL){ if(strcmp(ent->d_name, ".") != 0 && strcmp(ent->d_name, "..") != 0){ closedir(dp); S3FS_PRN_EXIT("MOUNTPOINT directory %s is not empty. if you are sure this is safe, can use the 'nonempty' mount option.", mountpoint.c_str()); return -1; } } closedir(dp); } #endif return 1; } // Unknown option if(NO_UTILITY_MODE == utility_mode){ S3FS_PRN_EXIT("specified unknown third option(%s).", arg); }else{ S3FS_PRN_EXIT("specified unknown second option(%s). you don't need to specify second option(mountpoint) for utility mode(-u).", arg); } return -1; }else if(key == FUSE_OPT_KEY_OPT){ if(is_prefix(arg, "uid=")){ s3fs_uid = get_uid(strchr(arg, '=') + sizeof(char)); if(0 != geteuid() && 0 == s3fs_uid){ S3FS_PRN_EXIT("root user can only specify uid=0."); return -1; } is_s3fs_uid = true; return 1; // continue for fuse option } if(is_prefix(arg, "gid=")){ s3fs_gid = get_gid(strchr(arg, '=') + sizeof(char)); if(0 != getegid() && 0 == s3fs_gid){ S3FS_PRN_EXIT("root user can only specify gid=0."); return -1; } is_s3fs_gid = true; return 1; // continue for fuse option } if(is_prefix(arg, "umask=")){ off_t s3fs_umask_tmp = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 8); s3fs_umask = s3fs_umask_tmp & (S_IRWXU | S_IRWXG | S_IRWXO); is_s3fs_umask = true; return 1; // continue for fuse option } if(0 == strcmp(arg, "allow_other")){ allow_other = true; return 1; // continue for fuse option } if(is_prefix(arg, "mp_umask=")){ off_t mp_umask_tmp = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 8); mp_umask = mp_umask_tmp & (S_IRWXU | S_IRWXG | S_IRWXO); is_mp_umask = true; return 0; } if(is_prefix(arg, "default_acl=")){ const char* acl_string = strchr(arg, '=') + sizeof(char); acl_t acl = acl_t::from_str(acl_string); if(acl == acl_t::UNKNOWN){ S3FS_PRN_EXIT("unknown value for default_acl: %s", acl_string); return -1; } S3fsCurl::SetDefaultAcl(acl); return 0; } if(is_prefix(arg, "retries=")){ off_t retries = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10); if(retries == 0){ S3FS_PRN_EXIT("retries must be greater than zero"); return -1; } S3fsCurl::SetRetries(static_cast(retries)); return 0; } if(is_prefix(arg, "tmpdir=")){ FdManager::SetTmpDir(strchr(arg, '=') + sizeof(char)); return 0; } if(is_prefix(arg, "use_cache=")){ FdManager::SetCacheDir(strchr(arg, '=') + sizeof(char)); return 0; } if(0 == strcmp(arg, "check_cache_dir_exist")){ FdManager::SetCheckCacheDirExist(true); return 0; } if(0 == strcmp(arg, "del_cache")){ is_remove_cache = true; return 0; } if(is_prefix(arg, "multireq_max=")){ int maxreq = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); S3fsCurl::SetMaxMultiRequest(maxreq); return 0; } if(0 == strcmp(arg, "nonempty")){ nonempty = true; return 1; // need to continue for fuse. } if(0 == strcmp(arg, "nomultipart")){ nomultipart = true; return 0; } // old format for storage_class if(0 == strcmp(arg, "use_rrs") || is_prefix(arg, "use_rrs=")){ off_t rrs = 1; // for an old format. if(is_prefix(arg, "use_rrs=")){ rrs = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10); } if(0 == rrs){ S3fsCurl::SetStorageClass("STANDARD"); }else if(1 == rrs){ S3fsCurl::SetStorageClass("REDUCED_REDUNDANCY"); }else{ S3FS_PRN_EXIT("poorly formed argument to option: use_rrs"); return -1; } return 0; } if(is_prefix(arg, "storage_class=")){ const char *storage_class = strchr(arg, '=') + sizeof(char); S3fsCurl::SetStorageClass(storage_class); return 0; } // // [NOTE] // use_sse Set Server Side Encrypting type to SSE-S3 // use_sse=1 // use_sse=file Set Server Side Encrypting type to Custom key(SSE-C) and load custom keys // use_sse=custom(c):file // use_sse=custom(c) Set Server Side Encrypting type to Custom key(SSE-C) // use_sse=kmsid(k):kms-key-id Set Server Side Encrypting type to AWS Key Management key id(SSE-KMS) and load KMS id // use_sse=kmsid(k) Set Server Side Encrypting type to AWS Key Management key id(SSE-KMS) // // load_sse_c=file Load Server Side Encrypting custom keys // // AWSSSECKEYS Loading Environment for Server Side Encrypting custom keys // AWSSSEKMSID Loading Environment for Server Side Encrypting Key id // if(is_prefix(arg, "use_sse")){ if(0 == strcmp(arg, "use_sse") || 0 == strcmp(arg, "use_sse=1")){ // use_sse=1 is old type parameter // sse type is SSE_S3 if(!S3fsCurl::IsSseDisable() && !S3fsCurl::IsSseS3Type()){ S3FS_PRN_EXIT("already set SSE another type, so conflict use_sse option or environment."); return -1; } S3fsCurl::SetSseType(sse_type_t::SSE_S3); }else if(0 == strcmp(arg, "use_sse=kmsid") || 0 == strcmp(arg, "use_sse=k")){ // sse type is SSE_KMS with out kmsid(expecting id is loaded by environment) if(!S3fsCurl::IsSseDisable() && !S3fsCurl::IsSseKmsType()){ S3FS_PRN_EXIT("already set SSE another type, so conflict use_sse option or environment."); return -1; } if(!S3fsCurl::IsSetSseKmsId()){ S3FS_PRN_EXIT("use_sse=kms but not loaded kms id by environment."); return -1; } S3fsCurl::SetSseType(sse_type_t::SSE_KMS); }else if(is_prefix(arg, "use_sse=kmsid:") || is_prefix(arg, "use_sse=k:")){ // sse type is SSE_KMS with kmsid if(!S3fsCurl::IsSseDisable() && !S3fsCurl::IsSseKmsType()){ S3FS_PRN_EXIT("already set SSE another type, so conflict use_sse option or environment."); return -1; } const char* kmsid; if(is_prefix(arg, "use_sse=kmsid:")){ kmsid = &arg[strlen("use_sse=kmsid:")]; }else{ kmsid = &arg[strlen("use_sse=k:")]; } if(!S3fsCurl::SetSseKmsid(kmsid)){ S3FS_PRN_EXIT("failed to load use_sse kms id."); return -1; } S3fsCurl::SetSseType(sse_type_t::SSE_KMS); }else if(0 == strcmp(arg, "use_sse=custom") || 0 == strcmp(arg, "use_sse=c")){ // sse type is SSE_C with out custom keys(expecting keys are loaded by environment or load_sse_c option) if(!S3fsCurl::IsSseDisable() && !S3fsCurl::IsSseCType()){ S3FS_PRN_EXIT("already set SSE another type, so conflict use_sse option or environment."); return -1; } // [NOTE] // do not check ckeys exists here. // S3fsCurl::SetSseType(sse_type_t::SSE_C); }else if(is_prefix(arg, "use_sse=custom:") || is_prefix(arg, "use_sse=c:")){ // sse type is SSE_C with custom keys if(!S3fsCurl::IsSseDisable() && !S3fsCurl::IsSseCType()){ S3FS_PRN_EXIT("already set SSE another type, so conflict use_sse option or environment."); return -1; } const char* ssecfile; if(is_prefix(arg, "use_sse=custom:")){ ssecfile = &arg[strlen("use_sse=custom:")]; }else{ ssecfile = &arg[strlen("use_sse=c:")]; } if(!S3fsCurl::SetSseCKeys(ssecfile)){ S3FS_PRN_EXIT("failed to load use_sse custom key file(%s).", ssecfile); return -1; } S3fsCurl::SetSseType(sse_type_t::SSE_C); }else if(0 == strcmp(arg, "use_sse=")){ // this type is old style(parameter is custom key file path) // SSE_C with custom keys. const char* ssecfile = &arg[strlen("use_sse=")]; if(!S3fsCurl::SetSseCKeys(ssecfile)){ S3FS_PRN_EXIT("failed to load use_sse custom key file(%s).", ssecfile); return -1; } S3fsCurl::SetSseType(sse_type_t::SSE_C); }else{ // never come here. S3FS_PRN_EXIT("something wrong use_sse option."); return -1; } return 0; } // [NOTE] // Do only load SSE custom keys, care for set without set sse type. if(is_prefix(arg, "load_sse_c=")){ const char* ssecfile = &arg[strlen("load_sse_c=")]; if(!S3fsCurl::SetSseCKeys(ssecfile)){ S3FS_PRN_EXIT("failed to load use_sse custom key file(%s).", ssecfile); return -1; } return 0; } if(is_prefix(arg, "ssl_verify_hostname=")){ long sslvh = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); if(-1 == S3fsCurl::SetSslVerifyHostname(sslvh)){ S3FS_PRN_EXIT("poorly formed argument to option: ssl_verify_hostname."); return -1; } return 0; } // // Detect options for credential // if(0 >= (ret = ps3fscred->DetectParam(arg))){ if(0 > ret){ return -1; } return 0; } if(is_prefix(arg, "public_bucket=")){ off_t pubbucket = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10); if(1 == pubbucket){ S3fsCurl::SetPublicBucket(true); // [NOTE] // if bucket is public(without credential), s3 do not allow copy api. // so s3fs sets nocopyapi mode. // nocopyapi = true; }else if(0 == pubbucket){ S3fsCurl::SetPublicBucket(false); }else{ S3FS_PRN_EXIT("poorly formed argument to option: public_bucket."); return -1; } return 0; } if(is_prefix(arg, "bucket=")){ std::string bname = strchr(arg, '=') + sizeof(char); if ((ret = set_bucket(bname.c_str()))){ return ret; } return 0; } if(0 == strcmp(arg, "no_check_certificate")){ S3fsCurl::SetCheckCertificate(false); return 0; } if(is_prefix(arg, "connect_timeout=")){ long contimeout = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); S3fsCurl::SetConnectTimeout(contimeout); return 0; } if(is_prefix(arg, "readwrite_timeout=")){ time_t rwtimeout = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); S3fsCurl::SetReadwriteTimeout(rwtimeout); return 0; } if(is_prefix(arg, "list_object_max_keys=")){ int max_keys = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); if(max_keys < 1000){ S3FS_PRN_EXIT("argument should be over 1000: list_object_max_keys"); return -1; } max_keys_list_object = max_keys; return 0; } if(is_prefix(arg, "max_stat_cache_size=")){ unsigned long cache_size = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), 10)); StatCache::getStatCacheData()->SetCacheSize(cache_size); return 0; } if(is_prefix(arg, "stat_cache_expire=")){ time_t expr_time = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), 10)); StatCache::getStatCacheData()->SetExpireTime(expr_time); return 0; } // [NOTE] // This option is for compatibility old version. if(is_prefix(arg, "stat_cache_interval_expire=")){ time_t expr_time = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); StatCache::getStatCacheData()->SetExpireTime(expr_time, true); return 0; } if(0 == strcmp(arg, "enable_noobj_cache")){ StatCache::getStatCacheData()->EnableCacheNoObject(); return 0; } if(0 == strcmp(arg, "nodnscache")){ S3fsCurl::SetDnsCache(false); return 0; } if(0 == strcmp(arg, "nosscache")){ S3fsCurl::SetSslSessionCache(false); return 0; } if(is_prefix(arg, "parallel_count=") || is_prefix(arg, "parallel_upload=")){ int maxpara = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); if(0 >= maxpara){ S3FS_PRN_EXIT("argument should be over 1: parallel_count"); return -1; } S3fsCurl::SetMaxParallelCount(maxpara); return 0; } if(is_prefix(arg, "fd_page_size=")){ S3FS_PRN_ERR("option fd_page_size is no longer supported, so skip this option."); return 0; } if(is_prefix(arg, "multipart_size=")){ off_t size = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); if(!S3fsCurl::SetMultipartSize(size)){ S3FS_PRN_EXIT("multipart_size option must be at least 5 MB."); return -1; } return 0; } if(is_prefix(arg, "multipart_copy_size=")){ off_t size = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); if(!S3fsCurl::SetMultipartCopySize(size)){ S3FS_PRN_EXIT("multipart_copy_size option must be at least 5 MB."); return -1; } return 0; } if(is_prefix(arg, "max_dirty_data=")){ off_t size = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)); if(size >= 50){ size *= 1024 * 1024; }else if(size != -1){ S3FS_PRN_EXIT("max_dirty_data option must be at least 50 MB."); return -1; } max_dirty_data = size; return 0; } if(is_prefix(arg, "ensure_diskfree=")){ off_t dfsize = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10) * 1024 * 1024; if(dfsize < S3fsCurl::GetMultipartSize()){ S3FS_PRN_WARN("specified size to ensure disk free space is smaller than multipart size, so set multipart size to it."); dfsize = S3fsCurl::GetMultipartSize(); } FdManager::SetEnsureFreeDiskSpace(dfsize); return 0; } if(is_prefix(arg, "fake_diskfree=")){ S3FS_PRN_WARN("The fake_diskfree option was specified. Use this option for testing or debugging."); // [NOTE] This value is used for initializing to FdManager after parsing all options. fake_diskfree_size = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10) * 1024 * 1024; return 0; } if(is_prefix(arg, "multipart_threshold=")){ multipart_threshold = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)) * 1024 * 1024; if(multipart_threshold <= MIN_MULTIPART_SIZE){ S3FS_PRN_EXIT("multipart_threshold must be at least %lld, was: %lld", static_cast(MIN_MULTIPART_SIZE), static_cast(multipart_threshold)); return -1; } return 0; } if(is_prefix(arg, "singlepart_copy_limit=")){ singlepart_copy_limit = static_cast(cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 10)) * 1024 * 1024; return 0; } if(is_prefix(arg, "ahbe_conf=")){ std::string ahbe_conf = strchr(arg, '=') + sizeof(char); if(!AdditionalHeader::get()->Load(ahbe_conf.c_str())){ S3FS_PRN_EXIT("failed to load ahbe_conf file(%s).", ahbe_conf.c_str()); return -1; } AdditionalHeader::get()->Dump(); return 0; } if(0 == strcmp(arg, "noxmlns")){ noxmlns = true; return 0; } if(0 == strcmp(arg, "nomixupload")){ FdEntity::SetNoMixMultipart(); return 0; } if(0 == strcmp(arg, "nocopyapi")){ nocopyapi = true; return 0; } if(0 == strcmp(arg, "norenameapi")){ norenameapi = true; return 0; } if(0 == strcmp(arg, "complement_stat")){ complement_stat = true; return 0; } if(0 == strcmp(arg, "notsup_compat_dir")){ support_compat_dir = false; return 0; } if(0 == strcmp(arg, "enable_content_md5")){ S3fsCurl::SetContentMd5(true); return 0; } if(0 == strcmp(arg, "enable_unsigned_payload")){ S3fsCurl::SetUnsignedPayload(true); return 0; } if(is_prefix(arg, "host=")){ s3host = strchr(arg, '=') + sizeof(char); return 0; } if(is_prefix(arg, "servicepath=")){ service_path = strchr(arg, '=') + sizeof(char); return 0; } if(is_prefix(arg, "url=")){ s3host = strchr(arg, '=') + sizeof(char); // strip the trailing '/', if any, off the end of the host // std::string size_t found, length; found = s3host.find_last_of('/'); length = s3host.length(); while(found == (length - 1) && length > 0){ s3host.erase(found); found = s3host.find_last_of('/'); length = s3host.length(); } // Check url for http / https protocol std::string if(!is_prefix(s3host.c_str(), "https://") && !is_prefix(s3host.c_str(), "http://")){ S3FS_PRN_EXIT("option url has invalid format, missing http / https protocol"); return -1; } return 0; } if(0 == strcmp(arg, "sigv2")){ S3fsCurl::SetSignatureType(V2_ONLY); return 0; } if(0 == strcmp(arg, "sigv4")){ S3fsCurl::SetSignatureType(V4_ONLY); return 0; } if(is_prefix(arg, "endpoint=")){ endpoint = strchr(arg, '=') + sizeof(char); is_specified_endpoint = true; return 0; } if(0 == strcmp(arg, "use_path_request_style")){ pathrequeststyle = true; return 0; } if(0 == strcmp(arg, "noua")){ S3fsCurl::SetUserAgentFlag(false); return 0; } if(0 == strcmp(arg, "listobjectsv2")){ S3fsCurl::SetListObjectsV2(true); return 0; } if(0 == strcmp(arg, "use_xattr")){ is_use_xattr = true; return 0; }else if(is_prefix(arg, "use_xattr=")){ const char* strflag = strchr(arg, '=') + sizeof(char); if(0 == strcmp(strflag, "1")){ is_use_xattr = true; }else if(0 == strcmp(strflag, "0")){ is_use_xattr = false; }else{ S3FS_PRN_EXIT("option use_xattr has unknown parameter(%s).", strflag); return -1; } return 0; } if(is_prefix(arg, "cipher_suites=")){ cipher_suites = strchr(arg, '=') + sizeof(char); return 0; } if(is_prefix(arg, "instance_name=")){ instance_name = strchr(arg, '=') + sizeof(char); instance_name = "[" + instance_name + "]"; return 0; } if(is_prefix(arg, "mime=")){ mimetype_file = strchr(arg, '=') + sizeof(char); return 0; } // // log file option // if(is_prefix(arg, "logfile=")){ const char* strlogfile = strchr(arg, '=') + sizeof(char); if(!S3fsLog::SetLogfile(strlogfile)){ S3FS_PRN_EXIT("The file(%s) specified by logfile option could not be opened.", strlogfile); return -1; } return 0; } // // debug level option // if(is_prefix(arg, "dbglevel=")){ const char* strlevel = strchr(arg, '=') + sizeof(char); if(0 == strcasecmp(strlevel, "silent") || 0 == strcasecmp(strlevel, "critical") || 0 == strcasecmp(strlevel, "crit")){ S3fsLog::SetLogLevel(S3fsLog::LEVEL_CRIT); }else if(0 == strcasecmp(strlevel, "error") || 0 == strcasecmp(strlevel, "err")){ S3fsLog::SetLogLevel(S3fsLog::LEVEL_ERR); }else if(0 == strcasecmp(strlevel, "wan") || 0 == strcasecmp(strlevel, "warn") || 0 == strcasecmp(strlevel, "warning")){ S3fsLog::SetLogLevel(S3fsLog::LEVEL_WARN); }else if(0 == strcasecmp(strlevel, "inf") || 0 == strcasecmp(strlevel, "info") || 0 == strcasecmp(strlevel, "information")){ S3fsLog::SetLogLevel(S3fsLog::LEVEL_INFO); }else if(0 == strcasecmp(strlevel, "dbg") || 0 == strcasecmp(strlevel, "debug")){ S3fsLog::SetLogLevel(S3fsLog::LEVEL_DBG); }else{ S3FS_PRN_EXIT("option dbglevel has unknown parameter(%s).", strlevel); return -1; } return 0; } // // debug option // // S3fsLog level is LEVEL_INFO, after second -d is passed to fuse. // if(0 == strcmp(arg, "-d") || 0 == strcmp(arg, "--debug")){ if(!S3fsLog::IsS3fsLogInfo() && !S3fsLog::IsS3fsLogDbg()){ S3fsLog::SetLogLevel(S3fsLog::LEVEL_INFO); return 0; } if(0 == strcmp(arg, "--debug")){ // fuse doesn't understand "--debug", but it understands -d. // but we can't pass -d back to fuse. return 0; } } // "f2" is not used no more. // (set S3fsLog::LEVEL_DBG) if(0 == strcmp(arg, "f2")){ S3fsLog::SetLogLevel(S3fsLog::LEVEL_DBG); return 0; } if(0 == strcmp(arg, "curldbg")){ S3fsCurl::SetVerbose(true); return 0; }else if(is_prefix(arg, "curldbg=")){ const char* strlevel = strchr(arg, '=') + sizeof(char); if(0 == strcasecmp(strlevel, "normal")){ S3fsCurl::SetVerbose(true); }else if(0 == strcasecmp(strlevel, "body")){ S3fsCurl::SetVerbose(true); S3fsCurl::SetDumpBody(true); }else{ S3FS_PRN_EXIT("option curldbg has unknown parameter(%s).", strlevel); return -1; } return 0; } // // no time stamp in debug message // if(0 == strcmp(arg, "no_time_stamp_msg")){ S3fsLog::SetTimeStamp(false); return 0; } // // Check cache file, using SIGUSR1 // if(0 == strcmp(arg, "set_check_cache_sigusr1")){ if(!S3fsSignals::SetUsr1Handler(NULL)){ S3FS_PRN_EXIT("could not set sigusr1 for checking cache."); return -1; } return 0; }else if(is_prefix(arg, "set_check_cache_sigusr1=")){ const char* strfilepath = strchr(arg, '=') + sizeof(char); if(!S3fsSignals::SetUsr1Handler(strfilepath)){ S3FS_PRN_EXIT("could not set sigusr1 for checking cache and output file(%s).", strfilepath); return -1; } return 0; } if(is_prefix(arg, "accessKeyId=")){ S3FS_PRN_EXIT("option accessKeyId is no longer supported."); return -1; } if(is_prefix(arg, "secretAccessKey=")){ S3FS_PRN_EXIT("option secretAccessKey is no longer supported."); return -1; } if(0 == strcmp(arg, "use_wtf8")){ use_wtf8 = true; return 0; } if(0 == strcmp(arg, "requester_pays")){ S3fsCurl::SetRequesterPays(true); return 0; } // [NOTE] // following option will be discarding, because these are not for fuse. // (Referenced sshfs.c) // if(0 == strcmp(arg, "auto") || 0 == strcmp(arg, "noauto") || 0 == strcmp(arg, "user") || 0 == strcmp(arg, "nouser") || 0 == strcmp(arg, "users") || 0 == strcmp(arg, "_netdev")) { return 0; } } return 1; } int main(int argc, char* argv[]) { int ch; int fuse_res; int option_index = 0; struct fuse_operations s3fs_oper; time_t incomp_abort_time = (24 * 60 * 60); S3fsLog singletonLog; static const struct option long_opts[] = { {"help", no_argument, NULL, 'h'}, {"version", no_argument, 0, 0}, {"debug", no_argument, NULL, 'd'}, {"incomplete-mpu-list", no_argument, NULL, 'u'}, {"incomplete-mpu-abort", optional_argument, NULL, 'a'}, // 'a' is only identifier and is not option. {NULL, 0, NULL, 0} }; // init xml2 xmlInitParser(); LIBXML_TEST_VERSION init_sysconf_vars(); // get program name - emulate basename program_name = argv[0]; size_t found = program_name.find_last_of('/'); if(found != std::string::npos){ program_name.replace(0, found+1, ""); } // set credential object // // This local variable is the only credential object. // It is also set in the S3fsCurl class and this object is used. // S3fsCred s3fscredObj; ps3fscred = &s3fscredObj; if(!S3fsCurl::InitCredentialObject(&s3fscredObj)){ S3FS_PRN_EXIT("Failed to setup credential object to s3fs curl."); exit(EXIT_FAILURE); } while((ch = getopt_long(argc, argv, "dho:fsu", long_opts, &option_index)) != -1){ switch(ch){ case 0: if(strcmp(long_opts[option_index].name, "version") == 0){ show_version(); exit(EXIT_SUCCESS); } break; case 'h': show_help(); exit(EXIT_SUCCESS); case 'o': break; case 'd': break; case 'f': foreground = true; break; case 's': break; case 'u': // --incomplete-mpu-list if(NO_UTILITY_MODE != utility_mode){ S3FS_PRN_EXIT("already utility mode option is specified."); exit(EXIT_FAILURE); } utility_mode = INCOMP_TYPE_LIST; break; case 'a': // --incomplete-mpu-abort if(NO_UTILITY_MODE != utility_mode){ S3FS_PRN_EXIT("already utility mode option is specified."); exit(EXIT_FAILURE); } utility_mode = INCOMP_TYPE_ABORT; // check expire argument if(NULL != optarg && 0 == strcasecmp(optarg, "all")){ // all is 0s incomp_abort_time = 0; }else if(NULL != optarg){ if(!convert_unixtime_from_option_arg(optarg, incomp_abort_time)){ S3FS_PRN_EXIT("--incomplete-mpu-abort option argument is wrong."); exit(EXIT_FAILURE); } } // if optarg is null, incomp_abort_time is 24H(default) break; default: exit(EXIT_FAILURE); } } // print launch message print_launch_message(argc, argv); // Load SSE environment if(!S3fsCurl::LoadEnvSse()){ S3FS_PRN_EXIT("something wrong about SSE environment."); exit(EXIT_FAILURE); } // ssl init if(!s3fs_init_global_ssl()){ S3FS_PRN_EXIT("could not initialize for ssl libraries."); exit(EXIT_FAILURE); } // mutex for xml if(!init_parser_xml_lock()){ S3FS_PRN_EXIT("could not initialize mutex for xml parser."); s3fs_destroy_global_ssl(); exit(EXIT_FAILURE); } // init curl (without mime types) // // [NOTE] // The curl initialization here does not load mime types. // The mime types file parameter are dynamic values according // to the user's environment, and are analyzed by the my_fuse_opt_proc // function. // The my_fuse_opt_proc function is executed after this curl // initialization. Because the curl method is used in the // my_fuse_opt_proc function, then it must be called here to // initialize. Fortunately, the processing using mime types // is only PUT/POST processing, and it is not used until the // call of my_fuse_opt_proc function is completed. Therefore, // the mime type is loaded just after calling the my_fuse_opt_proc // function. // if(!S3fsCurl::InitS3fsCurl()){ S3FS_PRN_EXIT("Could not initiate curl library."); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } // clear this structure memset(&s3fs_oper, 0, sizeof(s3fs_oper)); // This is the fuse-style parser for the arguments // after which the bucket name and mountpoint names // should have been set struct fuse_args custom_args = FUSE_ARGS_INIT(argc, argv); if(0 != fuse_opt_parse(&custom_args, NULL, NULL, my_fuse_opt_proc)){ S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } // init mime types for curl if(!S3fsCurl::InitMimeType(mimetype_file)){ S3FS_PRN_WARN("Missing MIME types prevents setting Content-Type on uploaded objects."); } // [NOTE] // exclusive option check here. // if(strcasecmp(S3fsCurl::GetStorageClass().c_str(), "REDUCED_REDUNDANCY") == 0 && !S3fsCurl::IsSseDisable()){ S3FS_PRN_EXIT("use_sse option could not be specified with storage class reduced_redundancy."); S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } if(!S3fsCurl::FinalCheckSse()){ S3FS_PRN_EXIT("something wrong about SSE options."); S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } if(S3fsCurl::GetSignatureType() == V2_ONLY && S3fsCurl::GetUnsignedPayload()){ S3FS_PRN_WARN("Ignoring enable_unsigned_payload with sigv2"); } if(!FdEntity::GetNoMixMultipart() && max_dirty_data != -1){ S3FS_PRN_WARN("Setting max_dirty_data to -1 when nomixupload is enabled"); max_dirty_data = -1; } // // Check the combination of parameters for credential // if(!ps3fscred->CheckAllParams()){ S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } // The second plain argument is the mountpoint // if the option was given, we all ready checked for a // readable, non-empty directory, this checks determines // if the mountpoint option was ever supplied if(NO_UTILITY_MODE == utility_mode){ if(mountpoint.empty()){ S3FS_PRN_EXIT("missing MOUNTPOINT argument."); show_usage(); S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } } // check tmp dir permission if(!FdManager::CheckTmpDirExist()){ S3FS_PRN_EXIT("temporary directory doesn't exists."); S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } // check cache dir permission if(!FdManager::CheckCacheDirExist() || !FdManager::CheckCacheTopDir() || !CacheFileStat::CheckCacheFileStatTopDir()){ S3FS_PRN_EXIT("could not allow cache directory permission, check permission of cache directories."); S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } // set fake free disk space if(-1 != fake_diskfree_size){ FdManager::InitFakeUsedDiskSize(fake_diskfree_size); } // set user agent S3fsCurl::InitUserAgent(); // There's room for more command line error checking // Check to see if the bucket name contains periods and https (SSL) is // being used. This is a known limitation: // https://docs.amazonwebservices.com/AmazonS3/latest/dev/ // The Developers Guide suggests that either use HTTP of for us to write // our own certificate verification logic. // For now, this will be unsupported unless we get a request for it to // be supported. In that case, we have a couple of options: // - implement a command line option that bypasses the verify host // but doesn't bypass verifying the certificate // - write our own host verification (this might be complex) // See issue #128strncasecmp /* if(1 == S3fsCurl::GetSslVerifyHostname()){ found = S3fsCred::GetBucket().find_first_of('.'); if(found != std::string::npos){ found = s3host.find("https:"); if(found != std::string::npos){ S3FS_PRN_EXIT("Using https and a bucket name with periods is unsupported."); exit(1); } } } */ if(NO_UTILITY_MODE != utility_mode){ int exitcode = s3fs_utility_processing(incomp_abort_time); S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(exitcode); } // Check multipart / copy api for mix multipart uploading if(nomultipart || nocopyapi || norenameapi){ FdEntity::SetNoMixMultipart(); max_dirty_data = -1; } // check free disk space if(!FdManager::IsSafeDiskSpace(NULL, S3fsCurl::GetMultipartSize() * S3fsCurl::GetMaxParallelCount())){ S3FS_PRN_EXIT("There is no enough disk space for used as cache(or temporary) directory by s3fs."); S3fsCurl::DestroyS3fsCurl(); s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); exit(EXIT_FAILURE); } s3fs_oper.getattr = s3fs_getattr; s3fs_oper.readlink = s3fs_readlink; s3fs_oper.mknod = s3fs_mknod; s3fs_oper.mkdir = s3fs_mkdir; s3fs_oper.unlink = s3fs_unlink; s3fs_oper.rmdir = s3fs_rmdir; s3fs_oper.symlink = s3fs_symlink; s3fs_oper.rename = s3fs_rename; s3fs_oper.link = s3fs_link; if(!nocopyapi){ s3fs_oper.chmod = s3fs_chmod; s3fs_oper.chown = s3fs_chown; s3fs_oper.utimens = s3fs_utimens; }else{ s3fs_oper.chmod = s3fs_chmod_nocopy; s3fs_oper.chown = s3fs_chown_nocopy; s3fs_oper.utimens = s3fs_utimens_nocopy; } s3fs_oper.truncate = s3fs_truncate; s3fs_oper.open = s3fs_open; s3fs_oper.read = s3fs_read; s3fs_oper.write = s3fs_write; s3fs_oper.statfs = s3fs_statfs; s3fs_oper.flush = s3fs_flush; s3fs_oper.fsync = s3fs_fsync; s3fs_oper.release = s3fs_release; s3fs_oper.opendir = s3fs_opendir; s3fs_oper.readdir = s3fs_readdir; s3fs_oper.init = s3fs_init; s3fs_oper.destroy = s3fs_destroy; s3fs_oper.access = s3fs_access; s3fs_oper.create = s3fs_create; // extended attributes if(is_use_xattr){ s3fs_oper.setxattr = s3fs_setxattr; s3fs_oper.getxattr = s3fs_getxattr; s3fs_oper.listxattr = s3fs_listxattr; s3fs_oper.removexattr = s3fs_removexattr; } s3fs_oper.flag_utime_omit_ok = true; // now passing things off to fuse, fuse will finish evaluating the command line args fuse_res = fuse_main(custom_args.argc, custom_args.argv, &s3fs_oper, NULL); fuse_opt_free_args(&custom_args); // Destroy curl if(!S3fsCurl::DestroyS3fsCurl()){ S3FS_PRN_WARN("Could not release curl library."); } s3fs_destroy_global_ssl(); destroy_parser_xml_lock(); // cleanup xml2 xmlCleanupParser(); S3FS_MALLOCTRIM(0); exit(fuse_res); } /* * Local variables: * tab-width: 4 * c-basic-offset: 4 * End: * vim600: expandtab sw=4 ts=4 fdm=marker * vim<600: expandtab sw=4 ts=4 */