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51f65d7b14
s3fs-fuse/src/s3fs.cpp
Takeshi Nakatani d9f6469b7b Fixed flushing dirty data and compressed the cache size
2020-11-14 16:45:37 +09:00

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/*
* s3fs - FUSE-based file system backed by Amazon S3
*
* Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
*
* 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 <cstdio>
#include <cstdlib>
#include <unistd.h>
#include <dirent.h>
#include <pwd.h>
#include <sys/types.h>
#include <getopt.h>
#include <fstream>
#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 "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 std::string passwd_file;
static std::string mimetype_file;
static bool nocopyapi = false;
static bool norenameapi = false;
static bool nonempty = false;
static bool allow_other = false;
static bool load_iamrole = 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_ecs = false;
static bool is_ibm_iam_auth = false;
static bool is_use_xattr = false;
static bool is_use_session_token = false;
static bool create_bucket = false;
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 const std::string allbucket_fields_type; // special key for mapping(This name is absolutely not used as a bucket name)
static const std::string keyval_fields_type = "\t"; // special key for mapping(This name is absolutely not used as a bucket name)
static const std::string aws_accesskeyid = "AWSAccessKeyId";
static const std::string aws_secretkey = "AWSSecretKey";
//-------------------------------------------------------------------
// Global functions : prototype
//-------------------------------------------------------------------
int put_headers(const char* path, headers_t& meta, bool is_copy, bool update_mtime = 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 FdEntity* get_local_fent(AutoFdEntity& autoent, const char* path, 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 int parse_passwd_file(bucketkvmap_t& resmap);
static int check_for_aws_format(const kvmap_t& kvmap);
static int check_passwd_file_perms();
static int read_aws_credentials_file(const std::string &filename);
static int read_passwd_file();
static int get_access_keys();
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[strpath.length() - 1]){
strpath = strpath.substr(0, 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[newpath.length() - 1]){
std::string::size_type Pos;
if(std::string::npos != (Pos = newpath.find("_$folder$", 0))){
newpath = newpath.substr(0, 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 = newpath.substr(0, newpath.length() - 1) + "_$folder$"; // cut and add
}else if(isforce){
// "no dir object" type.
(*pType) = DIRTYPE_NOOBJ;
nowpath = "";
}else{
nowpath = newpath;
if(0 < nowpath.length() && '/' == nowpath[nowpath.length() - 1]){
// "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 = newpath.substr(0, 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 = strpath.substr(0, Pos);
strpath += "/";
}
if(StatCache::getStatCacheData()->GetStat(strpath, pstat, pheader, overcheck, pisforce)){
StatCache::getStatCacheData()->ChangeNoTruncateFlag(strpath, add_no_truncate_cache);
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(0 != result){
if(overcheck){
// when support_compat_dir is disabled, strpath maybe have "_$folder$".
if('/' != strpath[strpath.length() - 1] && 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 = strpath.substr(0, 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 = strpath.substr(0, 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[strpath.length() - 1]){
strpath = strpath.substr(0, 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[strpath.length() - 1] && 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;
}
}
}
if(0 != 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 = strpath.substr(0, 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;
}
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 -EPERM;
}
}
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 FdEntity* get_local_fent(AutoFdEntity& autoent, const char* path, bool is_load)
{
struct stat stobj;
FdEntity* ent;
headers_t meta;
S3FS_PRN_INFO2("[path=%s]", path);
if(0 != get_object_attribute(path, &stobj, &meta)){
return NULL;
}
// 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, force_tmpfile, true))){
S3FS_PRN_ERR("Could not open file. errno(%d)", errno);
return NULL;
}
// load
if(is_load && !ent->OpenAndLoadAll(&meta)){
S3FS_PRN_ERR("Could not load file. errno(%d)", errno);
autoent.Close();
return NULL;
}
return ent;
}
//
// 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 update_mtime)
{
int result;
S3fsCurl s3fscurl(true);
struct stat buf;
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.
(void)get_object_attribute(path, &buf);
if(buf.st_size >= FIVE_GB){
// multipart
if(nocopyapi || nomultipart){
return -EFBIG; // File too large
}
if(0 != (result = s3fscurl.MultipartHeadRequest(path, buf.st_size, meta, is_copy))){
return result;
}
}else{
if(0 != (result = s3fscurl.PutHeadRequest(path, meta, is_copy))){
return result;
}
}
// [NOTE]
// if path is 'dir/', it does not have cache(could not open file for directory stat)
//
if(update_mtime && '/' != path[strlen(path) - 1] ){
AutoFdEntity autoent;
FdEntity* ent;
if(NULL == (ent = autoent.ExistOpen(path, -1, !FdManager::IsCacheDir()))){
// no opened fd
if(FdManager::IsCacheDir()){
// create cache file if be needed
ent = autoent.Open(path, &meta, buf.st_size, -1, false, true);
}
}
if(ent){
time_t mtime = get_mtime(meta);
time_t ctime = get_ctime(meta);
time_t atime = get_atime(meta);
if(mtime < 0){
mtime = 0L;
}
if(ctime < 0){
ctime = 0L;
}
if(atime < 0){
atime = 0L;
}
ent->SetMCtime(mtime, ctime);
ent->SetAtime(atime);
}
}
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.ExistOpen(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 symblic 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;
if(NULL == (ent = get_local_fent(autoent, path))){
S3FS_PRN_ERR("could not get fent(file=%s)", path);
return -EIO;
}
// 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<off_t>(size) <= readsize){
readsize = size - 1;
}
// Read
ssize_t ressize;
if(0 > (ressize = ent->Read(buf, 0, readsize))){
S3FS_PRN_ERR("could not read file(file=%s, ressize=%zd)", path, ressize);
return static_cast<int>(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 symblic 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);
S3FS_MALLOCTRIM(0);
return 0;
}
static int do_create_bucket()
{
S3FS_PRN_INFO2("/");
FILE* ptmpfp;
int tmpfd;
if(endpoint == "us-east-1"){
ptmpfp = NULL;
tmpfd = -1;
}else{
if(NULL == (ptmpfp = tmpfile()) ||
-1 == (tmpfd = fileno(ptmpfp)) ||
0 >= fprintf(ptmpfp, "<CreateBucketConfiguration xmlns=\"http://s3.amazonaws.com/doc/2006-03-01/\">\n"
" <LocationConstraint>%s</LocationConstraint>\n"
"</CreateBucketConfiguration>", endpoint.c_str()) ||
0 != fflush(ptmpfp) ||
-1 == fseek(ptmpfp, 0L, SEEK_SET))
{
S3FS_PRN_ERR("failed to create temporary file. err(%d)", errno);
if(ptmpfp){
fclose(ptmpfp);
}
return (0 == errno ? -EIO : -errno);
}
}
headers_t meta;
S3fsCurl s3fscurl(true);
int res = s3fscurl.PutRequest("/", meta, tmpfd);
if(res < 0){
long responseCode = s3fscurl.GetLastResponseCode();
if((responseCode == 400 || responseCode == 403) && S3fsCurl::GetSignatureType() == V2_OR_V4){
S3FS_PRN_ERR("Could not connect, so retry to connect by signature version 2.");
S3fsCurl::SetSignatureType(V2_ONLY);
// retry to check
s3fscurl.DestroyCurlHandle();
res = s3fscurl.PutRequest("/", meta, tmpfd);
}else if(responseCode == 409){
// bucket already exists
res = 0;
}
}
if(ptmpfp != NULL){
fclose(ptmpfp);
}
return res;
}
// 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;
}
result = create_file_object(path, mode, pcxt->uid, pcxt->gid);
StatCache::getStatCacheData()->DelStat(path);
if(result != 0){
return result;
}
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, 0, -1, false, true))){
StatCache::getStatCacheData()->DelStat(path);
return -EIO;
}
autoent.Detach(); // KEEP fdentity open
fi->fh = ent->GetFd();
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<long long>(atime), static_cast<long long>(ctime), static_cast<long long>(mtime), (unsigned int)uid, (unsigned int)gid);
if(!path || '\0' == path[0]){
return -1;
}
std::string tpath = path;
if('/' != tpath[tpath.length() - 1]){
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;
}
result = create_directory_object(path, mode, time(NULL), time(NULL), time(NULL), 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);
FdManager::DeleteCacheFile(path);
StatCache::getStatCacheData()->DelStat(path);
StatCache::getStatCacheData()->DelSymlink(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[strpath.length() - 1]){
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[strpath.length() - 1]){
strpath = strpath.substr(0, 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, true, true))){
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<ssize_t>(strFrom.length());
if(from_size != ent->Write(strFrom.c_str(), 0, from_size)){
S3FS_PRN_ERR("could not write tmpfile(errno=%d)", errno);
return -errno;
}
// upload
if(0 != (result = ent->Flush(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;
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, NULL, &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 + bucket + s3_realpath);
meta["Content-Type"] = S3fsCurl::LookupMimeType(std::string(to));
meta["x-amz-metadata-directive"] = "REPLACE";
if(0 != (result = put_headers(to, meta, true))){
return result;
}
FdManager::get()->Rename(from, to);
// Remove file
result = s3fs_unlink(from);
StatCache::getStatCacheData()->DelStat(to);
FdManager::DeleteCacheFile(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(NULL == (ent = get_local_fent(autoent, from, true))){
S3FS_PRN_ERR("could not open and read file(%s)", from);
return -EIO;
}
// Set header
if(!ent->SetContentType(to)){
S3FS_PRN_ERR("could not set content-type for %s", to);
return -EIO;
}
// update ctime
if(update_ctime){
ent->SetCtime(time(NULL));
}
// upload
if(0 != (result = ent->RowFlush(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);
FdManager::DeleteCacheFile(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 -EIO;
}
}
}
// 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 -EIO;
}
}
}
// 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 -EIO;
}
}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;
}
// flush pending writes if file is open
{ // scope for AutoFdEntity
AutoFdEntity autoent;
FdEntity* ent;
if(NULL != (ent = autoent.ExistOpen(from))){
if(0 != (result = ent->Flush(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 + bucket + 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;
if(NULL != (ent = autoent.ExistOpen(path, -1, true))){
// the file is opened now.
if(ent->MergeOrgMeta(updatemeta)){
// now uploading
// the meta is pending and accumulated to be put after the upload is complete.
S3FS_PRN_INFO("meta pending until upload is complete");
}else{
// allow to put header
// updatemeta already merged the orgmeta of the opened files.
if(0 != put_headers(strpath.c_str(), updatemeta, true)){
return -EIO;
}
StatCache::getStatCacheData()->DelStat(nowcache);
}
}else{
// not opened file, then put headers
merge_headers(meta, updatemeta, true);
if(0 != put_headers(strpath.c_str(), meta, true)){
return -EIO;
}
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(NULL == (ent = get_local_fent(autoent, strpath.c_str(), true))){
S3FS_PRN_ERR("could not open and read file(%s)", strpath.c_str());
return -EIO;
}
ent->SetCtime(time(NULL));
// Change file mode
ent->SetMode(mode);
// upload
if(0 != (result = ent->Flush(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 + bucket + 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;
if(NULL != (ent = autoent.ExistOpen(path, -1, true))){
// the file is opened now.
if(ent->MergeOrgMeta(updatemeta)){
// now uploading
// the meta is pending and accumulated to be put after the upload is complete.
S3FS_PRN_INFO("meta pending until upload is complete");
}else{
// allow to put header
// updatemeta already merged the orgmeta of the opened files.
if(0 != put_headers(strpath.c_str(), updatemeta, true)){
return -EIO;
}
StatCache::getStatCacheData()->DelStat(nowcache);
}
}else{
// not opened file, then put headers
merge_headers(meta, updatemeta, true);
if(0 != put_headers(strpath.c_str(), meta, true)){
return -EIO;
}
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(NULL == (ent = get_local_fent(autoent, strpath.c_str(), true))){
S3FS_PRN_ERR("could not open and read file(%s)", strpath.c_str());
return -EIO;
}
ent->SetCtime(time(NULL));
// Change owner
ent->SetUId(uid);
ent->SetGId(gid);
// upload
if(0 != (result = ent->Flush(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_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<long long>(ts[1].tv_sec), static_cast<long long>(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;
}
}
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, ts[0].tv_sec, ts[1].tv_sec, ts[0].tv_sec, stbuf.st_uid, stbuf.st_gid))){
return result;
}
}else{
headers_t updatemeta;
updatemeta["x-amz-meta-mtime"] = str(ts[1].tv_sec);
updatemeta["x-amz-meta-ctime"] = str(ts[0].tv_sec);
updatemeta["x-amz-meta-atime"] = str(ts[0].tv_sec);
updatemeta["x-amz-copy-source"] = urlEncode(service_path + bucket + 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;
if(NULL != (ent = autoent.ExistOpen(path, -1, true))){
// the file is opened now.
if(ent->MergeOrgMeta(updatemeta)){
// now uploading
// the meta is pending and accumulated to be put after the upload is complete.
S3FS_PRN_INFO("meta pending until upload is complete");
}else{
// allow to put header
// updatemeta already merged the orgmeta of the opened files.
if(0 != put_headers(strpath.c_str(), updatemeta, true)){
return -EIO;
}
StatCache::getStatCacheData()->DelStat(nowcache);
// [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.
//
ent->SetHoldingMtime(ts[1].tv_sec); // ts[1].tv_sec is mtime
}
}else{
// not opened file, then put headers
merge_headers(meta, updatemeta, true);
if(0 != put_headers(strpath.c_str(), meta, true)){
return -EIO;
}
StatCache::getStatCacheData()->DelStat(nowcache);
}
}
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<long long>(ts[1].tv_sec), static_cast<long long>(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;
}
}
// 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, ts[0].tv_sec, ts[1].tv_sec, ts[0].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(NULL == (ent = get_local_fent(autoent, strpath.c_str(), true))){
S3FS_PRN_ERR("could not open and read file(%s)", strpath.c_str());
return -EIO;
}
// set mtime/ctime
if(0 != (result = ent->SetMCtime(ts[1].tv_sec, ts[0].tv_sec))){
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(ts[0].tv_sec))){
S3FS_PRN_ERR("could not set atime to file(%s): result=%d", strpath.c_str(), result);
return result;
}
// upload
if(0 != (result = ent->Flush(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<long long>(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))){
// Exists -> Get file(with size)
if(NULL == (ent = autoent.Open(path, &meta, size, -1, false, true))){
S3FS_PRN_ERR("could not open file(%s): errno=%d", path, errno);
return -EIO;
}
if(0 != (result = ent->Load(0, size))){
S3FS_PRN_ERR("could not download file(%s): result=%d", path, result);
return result;
}
}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, true, true))){
S3FS_PRN_ERR("could not open file(%s): errno=%d", path, errno);
return -EIO;
}
}
// upload
if(0 != (result = ent->Flush(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);
// clear stat for reading fresh stat.
// (if object stat is changed, we refresh it. then s3fs gets always
// stat when s3fs open the object).
if(StatCache::getStatCacheData()->HasStat(path)){
// flush any dirty data so that subsequent stat gets correct size
if((result = s3fs_flush(_path, fi)) != 0){
S3FS_PRN_ERR("could not flush(%s): result=%d", path, result);
}
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, false, true))){
StatCache::getStatCacheData()->DelStat(path);
return -EIO;
}
if (needs_flush){
if(0 != (result = ent->RowFlush(path, true))){
S3FS_PRN_ERR("could not upload file(%s): result=%d", path, result);
StatCache::getStatCacheData()->DelStat(path);
return result;
}
}
autoent.Detach(); // KEEP fdentity open
fi->fh = ent->GetFd();
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][fd=%llu]", path, size, static_cast<long long>(offset), (unsigned long long)(fi->fh));
AutoFdEntity autoent;
FdEntity* ent;
if(NULL == (ent = autoent.ExistOpen(path, static_cast<int>(fi->fh)))){
S3FS_PRN_ERR("could not find opened fd(%s)", path);
return -EIO;
}
if(ent->GetFd() != static_cast<int>(fi->fh)){
S3FS_PRN_WARN("different fd(%d - %llu)", ent->GetFd(), (unsigned long long)(fi->fh));
}
// 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(buf, offset, size, false))){
S3FS_PRN_WARN("failed to read file(%s). result=%zd", path, res);
}
return static_cast<int>(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][fd=%llu]", path, size, static_cast<long long int>(offset), (unsigned long long)(fi->fh));
AutoFdEntity autoent;
FdEntity* ent;
if(NULL == (ent = autoent.ExistOpen(path, static_cast<int>(fi->fh)))){
S3FS_PRN_ERR("could not find opened fd(%s)", path);
return -EIO;
}
if(ent->GetFd() != static_cast<int>(fi->fh)){
S3FS_PRN_WARN("different fd(%d - %llu)", ent->GetFd(), (unsigned long long)(fi->fh));
}
if(0 > (res = ent->Write(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(path, true))){
S3FS_PRN_ERR("could not upload file(%s): result=%d", path, flushres);
StatCache::getStatCacheData()->DelStat(path);
return -EIO;
}
// 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<int>(res);
}
static int s3fs_statfs(const char* _path, struct statvfs* stbuf)
{
// WTF8_ENCODE(path)
// 256T
stbuf->f_bsize = 0X1000000;
stbuf->f_blocks = 0X1000000;
stbuf->f_bfree = 0x1000000;
stbuf->f_bavail = 0x1000000;
stbuf->f_namemax = NAME_MAX;
return 0;
}
static int s3fs_flush(const char* _path, struct fuse_file_info* fi)
{
WTF8_ENCODE(path)
int result;
S3FS_PRN_INFO("[path=%s][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.ExistOpen(path, static_cast<int>(fi->fh)))){
ent->UpdateMtime(true); // clear the flag not to update mtime.
ent->UpdateCtime();
result = ent->Flush(false);
}
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][fd=%llu]", path, (unsigned long long)(fi->fh));
AutoFdEntity autoent;
FdEntity* ent;
if(NULL != (ent = autoent.ExistOpen(path, static_cast<int>(fi->fh)))){
if(0 == datasync){
ent->UpdateMtime();
ent->UpdateCtime();
}
result = ent->Flush(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][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 ASSAP.
//
if((fi->flags & O_RDWR) || (fi->flags & O_WRONLY)){
StatCache::getStatCacheData()->DelStat(path);
}
{ // scope for AutoFdEntity
AutoFdEntity autoent;
FdEntity* ent;
// [NOTE]
// The number of references to fdEntity corresponding to fi-> fh is already incremented
// when it is opened. Therefore, when an existing fdEntity is detected here, the reference
// count must not be incremented. And if detected, the number of references incremented
// when opened will be decremented when the AutoFdEntity object is subsequently destroyed.
//
if(NULL == (ent = autoent.GetFdEntity(path, static_cast<int>(fi->fh), false))){
S3FS_PRN_ERR("could not find fd(file=%s)", path);
return -EIO;
}
if(ent->GetFd() != static_cast<int>(fi->fh)){
S3FS_PRN_WARN("different fd(%d - %llu)", ent->GetFd(), (unsigned long long)(fi->fh));
}
}
// check - for debug
if(S3fsLog::IsS3fsLogDbg()){
AutoFdEntity autoent;
FdEntity* ent;
if(NULL != (ent = autoent.GetFdEntity(path, static_cast<int>(fi->fh)))){
S3FS_PRN_WARN("file(%s),fd(%d) is still opened.", path, ent->GetFd());
}
}
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->GetSpacialSavedPath();
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;
}
int 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 < 0 ? 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->GetSpacialSavedPath().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->GetSpacialSavedPath();
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[disppath.length() - 1]){
fillpath = fillpath.substr(0, 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_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(0 == s3_realpath.length() || '/' != s3_realpath[s3_realpath.length() - 1]){
// 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){
std::string each_query = query_delimiter;
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<int>(body->size()), "", NULL, 0))){
S3FS_PRN_ERR("xmlReadMemory returns with error.");
return -1;
}
if(0 != append_objects_from_xml(path, doc, head)){
S3FS_PRN_ERR("append_objects_from_xml returns with error.");
xmlFreeDoc(doc);
return -1;
}
if(true == (truncated = is_truncated(doc))){
xmlChar* tmpch = get_next_marker(doc);
if(tmpch){
next_marker = (char*)tmpch;
xmlFree(tmpch);
}else{
// 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(0 == s3_realpath.length() || '/' != s3_realpath[s3_realpath.length() - 1]){
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;
S3FS_PRN_INFO1("[path=%s]", path);
// getattr will prefix the path with the remote mountpoint
if(0 != get_object_attribute("/", &stbuf, NULL)){
return -1;
}
if(!S_ISDIR(stbuf.st_mode)){
return -1;
}
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(), &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(','); 0 < restxattrs.length(); 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 + bucket + 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;
if(NULL != (ent = autoent.ExistOpen(path, -1, true))){
// the file is opened now.
// 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)){
// now uploading
// the meta is pending and accumulated to be put after the upload is complete.
S3FS_PRN_INFO("meta pending until upload is complete");
}else{
// allow to put header
// updatemeta already merged the orgmeta of the opened files.
if(0 != put_headers(strpath.c_str(), updatemeta, true)){
return -EIO;
}
StatCache::getStatCacheData()->DelStat(nowcache);
}
}else{
// not opened file, then put headers
merge_headers(meta, updatemeta, true);
// NOTICE: modify xattr from base meta
if(0 != (result = set_xattrs_to_header(meta, name, value, size, flags))){
return result;
}
if(0 != put_headers(strpath.c_str(), meta, true)){
return -EIO;
}
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_t>(size) < length){
// over buffer size
free_xattrs(xattrs);
return -ERANGE;
}
if(pvalue){
memcpy(value, pvalue, length);
}
}
free_xattrs(xattrs);
return static_cast<int>(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(0 < xiter->first.length()){
total += xiter->first.length() + 1;
}
}
if(0 == total){
free_xattrs(xattrs);
return 0;
}
// check parameters
if(0 == size){
free_xattrs(xattrs);
return 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(0 < xiter->first.length()){
strcpy(setpos, xiter->first.c_str());
setpos = &setpos[strlen(setpos) + 1];
}
}
free_xattrs(xattrs);
return 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 + bucket + 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;
if(NULL != (ent = autoent.ExistOpen(path, -1, true))){
// the file is opened now.
if(ent->MergeOrgMeta(updatemeta)){
// now uploading
// the meta is pending and accumulated to be put after the upload is complete.
S3FS_PRN_INFO("meta pending until upload is complete");
}else{
// allow to put header
// updatemeta already merged the orgmeta of the opened files.
if(updatemeta["x-amz-meta-xattr"].empty()){
updatemeta.erase("x-amz-meta-xattr");
}
if(0 != put_headers(strpath.c_str(), updatemeta, true)){
return -EIO;
}
StatCache::getStatCacheData()->DelStat(nowcache);
}
}else{
// not opened file, then put headers
if(updatemeta["x-amz-meta-xattr"].empty()){
updatemeta.erase("x-amz-meta-xattr");
}
merge_headers(meta, updatemeta, true);
if(0 != put_headers(strpath.c_str(), meta, true)){
return -EIO;
}
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(load_iamrole){
// 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", S3fsCurl::GetIAMRole());
}
if (create_bucket){
int result = do_create_bucket();
if(result != 0){
s3fs_exit_fuseloop(result);
return NULL;
}
}
// 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.
// "<Error>
// <Code>AuthorizationHeaderMalformed</Code>
// <Message>The authorization header is malformed; the region 'us-east-1' is wrong; expecting 'ap-northeast-1'</Message>
// <Region>ap-northeast-1</Region>
// <RequestId>...</RequestId>
// <HostId>...</HostId>
// </Error>"
//
// 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 int s3fs_check_service()
{
S3FS_PRN_INFO("check services.");
// At first time for access S3, we check IAM role if it sets.
if(!S3fsCurl::CheckIAMCredentialUpdate()){
S3FS_PRN_CRIT("Failed to check IAM role name(%s).", S3fsCurl::GetIAMRole());
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;
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();
}
}
}
// 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 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;
}
//
// Read and Parse passwd file
//
// The line of the password file is one of the following formats:
// (1) "accesskey:secretkey" : AWS format for default(all) access key/secret key
// (2) "bucket:accesskey:secretkey" : AWS format for bucket's access key/secret key
// (3) "key=value" : Content-dependent KeyValue contents
//
// This function sets result into bucketkvmap_t, it bucket name and key&value mapping.
// If bucket name is empty(1 or 3 format), bucket name for mapping is set "\t" or "".
//
// Return: 1 - OK(could parse and set mapping etc.)
// 0 - NG(could not read any value)
// -1 - Should shutdown immediately
//
static int parse_passwd_file(bucketkvmap_t& resmap)
{
std::string line;
size_t first_pos;
readline_t linelist;
readline_t::iterator iter;
// open passwd file
std::ifstream PF(passwd_file.c_str());
if(!PF.good()){
S3FS_PRN_EXIT("could not open passwd file : %s", passwd_file.c_str());
return -1;
}
// read each line
while(getline(PF, line)){
line = trim(line);
if(line.empty()){
continue;
}
if('#' == line[0]){
continue;
}
if(std::string::npos != line.find_first_of(" \t")){
S3FS_PRN_EXIT("invalid line in passwd file, found whitespace character.");
return -1;
}
if('[' == line[0]){
S3FS_PRN_EXIT("invalid line in passwd file, found a bracket \"[\" character.");
return -1;
}
linelist.push_back(line);
}
// read '=' type
kvmap_t kv;
for(iter = linelist.begin(); iter != linelist.end(); ++iter){
first_pos = iter->find_first_of('=');
if(first_pos == std::string::npos){
continue;
}
// formatted by "key=val"
std::string key = trim(iter->substr(0, first_pos));
std::string val = trim(iter->substr(first_pos + 1, std::string::npos));
if(key.empty()){
continue;
}
if(kv.end() != kv.find(key)){
S3FS_PRN_WARN("same key name(%s) found in passwd file, skip this.", key.c_str());
continue;
}
kv[key] = val;
}
// set special key name
resmap[std::string(keyval_fields_type)] = kv;
// read ':' type
for(iter = linelist.begin(); iter != linelist.end(); ++iter){
first_pos = iter->find_first_of(':');
size_t last_pos = iter->find_last_of(':');
if(first_pos == std::string::npos){
continue;
}
std::string bucketname;
std::string accesskey;
std::string secret;
if(first_pos != last_pos){
// formatted by "bucket:accesskey:secretkey"
bucketname = trim(iter->substr(0, first_pos));
accesskey = trim(iter->substr(first_pos + 1, last_pos - first_pos - 1));
secret = trim(iter->substr(last_pos + 1, std::string::npos));
}else{
// formatted by "accesskey:secretkey"
bucketname = allbucket_fields_type;
accesskey = trim(iter->substr(0, first_pos));
secret = trim(iter->substr(first_pos + 1, std::string::npos));
}
if(resmap.end() != resmap.find(bucketname)){
S3FS_PRN_EXIT("there are multiple entries for the same bucket(%s) in the passwd file.", (bucketname.empty() ? "default" : bucketname.c_str()));
return -1;
}
kv.clear();
kv[std::string(aws_accesskeyid)] = accesskey;
kv[std::string(aws_secretkey)] = secret;
resmap[bucketname] = kv;
}
return (resmap.empty() ? 0 : 1);
}
//
// Return: 1 - OK(could read and set accesskey etc.)
// 0 - NG(could not read)
// -1 - Should shutdown immediately
//
static int check_for_aws_format(const kvmap_t& kvmap)
{
std::string str1(aws_accesskeyid);
std::string str2(aws_secretkey);
if(kvmap.empty()){
return 0;
}
kvmap_t::const_iterator str1_it = kvmap.find(str1);
kvmap_t::const_iterator str2_it = kvmap.find(str2);
if(kvmap.end() == str1_it && kvmap.end() == str2_it){
return 0;
}
if(kvmap.end() == str1_it || kvmap.end() == str2_it){
S3FS_PRN_EXIT("AWSAccesskey or AWSSecretkey is not specified.");
return -1;
}
if(!S3fsCurl::SetAccessKey(str1_it->second.c_str(), str2_it->second.c_str())){
S3FS_PRN_EXIT("failed to set access key/secret key.");
return -1;
}
return 1;
}
//
// check_passwd_file_perms
//
// expect that global passwd_file variable contains
// a non-empty value and is readable by the current user
//
// Check for too permissive access to the file
// help save users from themselves via a security hole
//
// only two options: return or error out
//
static int check_passwd_file_perms()
{
struct stat info;
// let's get the file info
if(stat(passwd_file.c_str(), &info) != 0){
S3FS_PRN_EXIT("unexpected error from stat(%s).", passwd_file.c_str());
return EXIT_FAILURE;
}
// return error if any file has others permissions
if( (info.st_mode & S_IROTH) ||
(info.st_mode & S_IWOTH) ||
(info.st_mode & S_IXOTH)) {
S3FS_PRN_EXIT("credentials file %s should not have others permissions.", passwd_file.c_str());
return EXIT_FAILURE;
}
// Any local file should not have any group permissions
// /etc/passwd-s3fs can have group permissions
if(passwd_file != "/etc/passwd-s3fs"){
if( (info.st_mode & S_IRGRP) ||
(info.st_mode & S_IWGRP) ||
(info.st_mode & S_IXGRP)) {
S3FS_PRN_EXIT("credentials file %s should not have group permissions.", passwd_file.c_str());
return EXIT_FAILURE;
}
}else{
// "/etc/passwd-s3fs" does not allow group write.
if((info.st_mode & S_IWGRP)){
S3FS_PRN_EXIT("credentials file %s should not have group writable permissions.", passwd_file.c_str());
return EXIT_FAILURE;
}
}
if((info.st_mode & S_IXUSR) || (info.st_mode & S_IXGRP)){
S3FS_PRN_EXIT("credentials file %s should not have executable permissions.", passwd_file.c_str());
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
static int read_aws_credentials_file(const std::string &filename)
{
// open passwd file
std::ifstream PF(filename.c_str());
if(!PF.good()){
return -1;
}
std::string profile;
std::string accesskey;
std::string secret;
std::string session_token;
// read each line
std::string line;
while(getline(PF, line)){
line = trim(line);
if(line.empty()){
continue;
}
if('#' == line[0]){
continue;
}
if(line.size() > 2 && line[0] == '[' && line[line.size() - 1] == ']') {
if(profile == aws_profile){
break;
}
profile = line.substr(1, line.size() - 2);
accesskey.clear();
secret.clear();
session_token.clear();
}
size_t pos = line.find_first_of('=');
if(pos == std::string::npos){
continue;
}
std::string key = trim(line.substr(0, pos));
std::string value = trim(line.substr(pos + 1, std::string::npos));
if(key == "aws_access_key_id"){
accesskey = value;
}else if(key == "aws_secret_access_key"){
secret = value;
}else if(key == "aws_session_token"){
session_token = value;
}
}
if(profile != aws_profile){
return EXIT_FAILURE;
}
if (session_token.empty()) {
if (is_use_session_token) {
S3FS_PRN_EXIT("AWS session token was expected but wasn't provided in aws/credentials file for profile: %s.", aws_profile.c_str());
return EXIT_FAILURE;
}
if(!S3fsCurl::SetAccessKey(accesskey.c_str(), secret.c_str())){
S3FS_PRN_EXIT("failed to set internal data for access key/secret key from aws credential file.");
return EXIT_FAILURE;
}
} else {
if (!S3fsCurl::SetAccessKeyWithSessionToken(accesskey.c_str(), secret.c_str(), session_token.c_str())) {
S3FS_PRN_EXIT("session token is invalid.");
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
//
// read_passwd_file
//
// Support for per bucket credentials
//
// Format for the credentials file:
// [bucket:]AccessKeyId:SecretAccessKey
//
// Lines beginning with # are considered comments
// and ignored, as are empty lines
//
// Uncommented lines without the ":" character are flagged as
// an error, so are lines with spaces or tabs
//
// only one default key pair is allowed, but not required
//
static int read_passwd_file()
{
bucketkvmap_t bucketmap;
kvmap_t keyval;
int result;
// if you got here, the password file
// exists and is readable by the
// current user, check for permissions
if(EXIT_SUCCESS != check_passwd_file_perms()){
return EXIT_FAILURE;
}
//
// parse passwd file
//
result = parse_passwd_file(bucketmap);
if(-1 == result){
return EXIT_FAILURE;
}
//
// check key=value type format.
//
bucketkvmap_t::iterator it = bucketmap.find(keyval_fields_type);
if(bucketmap.end() != it){
// aws format
result = check_for_aws_format(it->second);
if(-1 == result){
return EXIT_FAILURE;
}else if(1 == result){
// success to set
return EXIT_SUCCESS;
}
}
std::string bucket_key = allbucket_fields_type;
if(!bucket.empty() && bucketmap.end() != bucketmap.find(bucket)){
bucket_key = bucket;
}
it = bucketmap.find(bucket_key);
if(bucketmap.end() == it){
S3FS_PRN_EXIT("Not found access key/secret key in passwd file.");
return EXIT_FAILURE;
}
keyval = it->second;
kvmap_t::iterator aws_accesskeyid_it = keyval.find(aws_accesskeyid);
kvmap_t::iterator aws_secretkey_it = keyval.find(aws_secretkey);
if(keyval.end() == aws_accesskeyid_it || keyval.end() == aws_secretkey_it){
S3FS_PRN_EXIT("Not found access key/secret key in passwd file.");
return EXIT_FAILURE;
}
if(!S3fsCurl::SetAccessKey(aws_accesskeyid_it->second.c_str(), aws_secretkey_it->second.c_str())){
S3FS_PRN_EXIT("failed to set internal data for access key/secret key from passwd file.");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
//
// get_access_keys
//
// called only when were are not mounting a
// public bucket
//
// Here is the order precedence for getting the
// keys:
//
// 1 - from the command line (security risk)
// 2 - from a password file specified on the command line
// 3 - from environment variables
// 3a - from the AWS_CREDENTIAL_FILE environment variable
// 3b - from ${HOME}/.aws/credentials
// 4 - from the users ~/.passwd-s3fs
// 5 - from /etc/passwd-s3fs
//
static int get_access_keys()
{
// should be redundant
if(S3fsCurl::IsPublicBucket()){
return EXIT_SUCCESS;
}
// access key loading is deferred
if(load_iamrole || is_ecs){
return EXIT_SUCCESS;
}
// 1 - keys specified on the command line
if(S3fsCurl::IsSetAccessKeys()){
return EXIT_SUCCESS;
}
// 2 - was specified on the command line
if(!passwd_file.empty()){
std::ifstream PF(passwd_file.c_str());
if(PF.good()){
PF.close();
return read_passwd_file();
}else{
S3FS_PRN_EXIT("specified passwd_file is not readable.");
return EXIT_FAILURE;
}
}
// 3 - environment variables
char* AWSACCESSKEYID = getenv("AWSACCESSKEYID");
char* AWSSECRETACCESSKEY = getenv("AWSSECRETACCESSKEY");
char* AWSSESSIONTOKEN = getenv("AWSSESSIONTOKEN");
if(AWSACCESSKEYID != NULL || AWSSECRETACCESSKEY != NULL){
if( (AWSACCESSKEYID == NULL && AWSSECRETACCESSKEY != NULL) ||
(AWSACCESSKEYID != NULL && AWSSECRETACCESSKEY == NULL) ){
S3FS_PRN_EXIT("if environment variable AWSACCESSKEYID is set then AWSSECRETACCESSKEY must be set too.");
return EXIT_FAILURE;
}
S3FS_PRN_INFO2("access key from env variables");
if (AWSSESSIONTOKEN != NULL) {
S3FS_PRN_INFO2("session token is available");
if (!S3fsCurl::SetAccessKeyWithSessionToken(AWSACCESSKEYID, AWSSECRETACCESSKEY, AWSSESSIONTOKEN)) {
S3FS_PRN_EXIT("session token is invalid.");
return EXIT_FAILURE;
}
} else {
S3FS_PRN_INFO2("session token is not available");
if (is_use_session_token) {
S3FS_PRN_EXIT("environment variable AWSSESSIONTOKEN is expected to be set.");
return EXIT_FAILURE;
}
}
if(!S3fsCurl::SetAccessKey(AWSACCESSKEYID, AWSSECRETACCESSKEY)){
S3FS_PRN_EXIT("if one access key is specified, both keys need to be specified.");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
// 3a - from the AWS_CREDENTIAL_FILE environment variable
char * AWS_CREDENTIAL_FILE;
AWS_CREDENTIAL_FILE = getenv("AWS_CREDENTIAL_FILE");
if(AWS_CREDENTIAL_FILE != NULL){
passwd_file = AWS_CREDENTIAL_FILE;
if(!passwd_file.empty()){
std::ifstream PF(passwd_file.c_str());
if(PF.good()){
PF.close();
return read_passwd_file();
}else{
S3FS_PRN_EXIT("AWS_CREDENTIAL_FILE: \"%s\" is not readable.", passwd_file.c_str());
return EXIT_FAILURE;
}
}
}
// 3b - check ${HOME}/.aws/credentials
std::string aws_credentials = std::string(getpwuid(getuid())->pw_dir) + "/.aws/credentials";
if(read_aws_credentials_file(aws_credentials) == EXIT_SUCCESS) {
return EXIT_SUCCESS;
}else if(aws_profile != "default"){
S3FS_PRN_EXIT("Could not find profile: %s in file: %s", aws_profile.c_str(), aws_credentials.c_str());
return EXIT_FAILURE;
}
// 4 - from the default location in the users home directory
char * HOME;
HOME = getenv ("HOME");
if(HOME != NULL){
passwd_file = HOME;
passwd_file += "/.passwd-s3fs";
std::ifstream PF(passwd_file.c_str());
if(PF.good()){
PF.close();
if(EXIT_SUCCESS != read_passwd_file()){
return EXIT_FAILURE;
}
// It is possible that the user's file was there but
// contained no key pairs i.e. commented out
// in that case, go look in the final location
if(S3fsCurl::IsSetAccessKeys()){
return EXIT_SUCCESS;
}
}
}
// 5 - from the system default location
passwd_file = "/etc/passwd-s3fs";
std::ifstream PF(passwd_file.c_str());
if(PF.good()){
PF.close();
return read_passwd_file();
}
S3FS_PRN_EXIT("could not determine how to establish security credentials.");
return EXIT_FAILURE;
}
//
// 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);
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;
}
//
// 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;
}
bucket = strtok(bucket_name, ":");
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 = mount_prefix.substr(0, mount_prefix.size() - 1);
}
}
}else{
bucket = arg;
}
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(bucket.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;
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);
}
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=")){
s3fs_umask = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 8);
s3fs_umask &= (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=")){
mp_umask = cvt_strtoofft(strchr(arg, '=') + sizeof(char), /*base=*/ 8);
mp_umask &= (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 = static_cast<int>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
if(retries == 0){
S3FS_PRN_EXIT("retries must be greater than zero");
return -1;
}
S3fsCurl::SetRetries(retries);
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<int>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
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));
}
if(0 == rrs){
S3fsCurl::SetStorageClass(storage_class_t::STANDARD);
}else if(1 == rrs){
S3fsCurl::SetStorageClass(storage_class_t::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_str = strchr(arg, '=') + sizeof(char);
storage_class_t storage_class = storage_class_t::from_str(storage_class_str);
if(storage_class == storage_class_t::UNKNOWN){
S3FS_PRN_EXIT("unknown value for storage_class: %s", storage_class_str);
return -1;
}
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<long>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
if(-1 == S3fsCurl::SetSslVerifyHostname(sslvh)){
S3FS_PRN_EXIT("poorly formed argument to option: ssl_verify_hostname.");
return -1;
}
return 0;
}
if(is_prefix(arg, "passwd_file=")){
passwd_file = strchr(arg, '=') + sizeof(char);
return 0;
}
if(0 == strcmp(arg, "ibm_iam_auth")){
S3fsCurl::SetIsIBMIAMAuth(true);
S3fsCurl::SetIAMCredentialsURL("https://iam.bluemix.net/oidc/token");
S3fsCurl::SetIAMTokenField("\"access_token\"");
S3fsCurl::SetIAMExpiryField("\"expiration\"");
S3fsCurl::SetIAMFieldCount(2);
S3fsCurl::SetIMDSVersion(1);
is_ibm_iam_auth = true;
return 0;
}
if (0 == strcmp(arg, "use_session_token")) {
is_use_session_token = true;
return 0;
}
if(is_prefix(arg, "ibm_iam_endpoint=")){
std::string endpoint_url;
const char *iam_endpoint = strchr(arg, '=') + sizeof(char);
// Check url for http / https protocol std::string
if(!is_prefix(iam_endpoint, "https://") && !is_prefix(iam_endpoint, "http://")) {
S3FS_PRN_EXIT("option ibm_iam_endpoint has invalid format, missing http / https protocol");
return -1;
}
endpoint_url = std::string(iam_endpoint) + "/oidc/token";
S3fsCurl::SetIAMCredentialsURL(endpoint_url.c_str());
return 0;
}
if(0 == strcmp(arg, "imdsv1only")){
S3fsCurl::SetIMDSVersion(1);
return 0;
}
if(0 == strcmp(arg, "ecs")){
if (is_ibm_iam_auth) {
S3FS_PRN_EXIT("option ecs cannot be used in conjunction with ibm");
return -1;
}
S3fsCurl::SetIsECS(true);
S3fsCurl::SetIMDSVersion(1);
S3fsCurl::SetIAMCredentialsURL("http://169.254.170.2");
S3fsCurl::SetIAMFieldCount(5);
is_ecs = true;
return 0;
}
if(is_prefix(arg, "iam_role")){
if (is_ecs || is_ibm_iam_auth) {
S3FS_PRN_EXIT("option iam_role cannot be used in conjunction with ecs or ibm");
return -1;
}
if(0 == strcmp(arg, "iam_role") || 0 == strcmp(arg, "iam_role=auto")){
// loading IAM role name in s3fs_init(), because we need to wait initializing curl.
//
load_iamrole = true;
return 0;
}else if(is_prefix(arg, "iam_role=")){
const char* role = strchr(arg, '=') + sizeof(char);
S3fsCurl::SetIAMRole(role);
load_iamrole = false;
return 0;
}
}
if(is_prefix(arg, "profile=")){
aws_profile = strchr(arg, '=') + sizeof(char);
return 0;
}
if(is_prefix(arg, "public_bucket=")){
off_t pubbucket = cvt_strtoofft(strchr(arg, '=') + sizeof(char));
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<long>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
S3fsCurl::SetConnectTimeout(contimeout);
return 0;
}
if(is_prefix(arg, "readwrite_timeout=")){
time_t rwtimeout = static_cast<time_t>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
S3fsCurl::SetReadwriteTimeout(rwtimeout);
return 0;
}
if(is_prefix(arg, "list_object_max_keys=")){
int max_keys = static_cast<int>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
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<unsigned long>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
StatCache::getStatCacheData()->SetCacheSize(cache_size);
return 0;
}
if(is_prefix(arg, "stat_cache_expire=")){
time_t expr_time = static_cast<time_t>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
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<time_t>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
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<int>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
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<off_t>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
if(!S3fsCurl::SetMultipartSize(size)){
S3FS_PRN_EXIT("multipart_size option must be at least 5 MB.");
return -1;
}
return 0;
}
if(is_prefix(arg, "max_dirty_data=")){
off_t size = static_cast<off_t>(cvt_strtoofft(strchr(arg, '=') + sizeof(char)));
if(size < 50){
S3FS_PRN_EXIT("max_dirty_data option must be at least 50 MB.");
return -1;
}
size *= 1024 * 1024;
max_dirty_data = size;
return 0;
}
if(is_prefix(arg, "ensure_diskfree=")){
off_t dfsize = cvt_strtoofft(strchr(arg, '=') + sizeof(char)) * 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, "singlepart_copy_limit=")){
singlepart_copy_limit = static_cast<int64_t>(cvt_strtoofft(strchr(arg, '=') + sizeof(char))) * 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(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(0 == strcmp(arg, "createbucket")){
create_bucket = true;
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, "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;
}
//
// 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, "");
}
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);
}
}
// 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);
}
// 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();
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();
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(storage_class_t::REDUCED_REDUNDANCY == S3fsCurl::GetStorageClass() && !S3fsCurl::IsSseDisable()){
S3FS_PRN_EXIT("use_sse option could not be specified with storage class reduced_redundancy.");
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
if(!S3fsCurl::FinalCheckSse()){
S3FS_PRN_EXIT("something wrong about SSE options.");
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
if(!FdEntity::GetNoMixMultipart() && max_dirty_data != -1){
S3FS_PRN_WARN("Setting max_dirty_data to -1 when nomixupload is enabled");
max_dirty_data = -1;
}
// The first plain argument is the bucket
if(bucket.empty()){
S3FS_PRN_EXIT("missing BUCKET argument.");
show_usage();
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
// bucket names cannot contain upper case characters in virtual-hosted style
if((!pathrequeststyle) && (lower(bucket) != bucket)){
S3FS_PRN_EXIT("BUCKET %s, name not compatible with virtual-hosted style.", bucket.c_str());
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
// check bucket name for illegal characters
found = bucket.find_first_of("/:\\;!@#$%^&*?|+=");
if(found != std::string::npos){
S3FS_PRN_EXIT("BUCKET %s -- bucket name contains an illegal character.", bucket.c_str());
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
if(!pathrequeststyle && is_prefix(s3host.c_str(), "https://") && bucket.find_first_of('.') != std::string::npos) {
S3FS_PRN_EXIT("BUCKET %s -- cannot mount bucket with . while using HTTPS without use_path_request_style", bucket.c_str());
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
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();
exit(EXIT_FAILURE);
}
}
// error checking of command line arguments for compatibility
if(S3fsCurl::IsPublicBucket() && S3fsCurl::IsSetAccessKeys()){
S3FS_PRN_EXIT("specifying both public_bucket and the access keys options is invalid.");
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
if(!passwd_file.empty() && S3fsCurl::IsSetAccessKeys()){
S3FS_PRN_EXIT("specifying both passwd_file and the access keys options is invalid.");
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
if(!S3fsCurl::IsPublicBucket() && !load_iamrole && !is_ecs){
if(EXIT_SUCCESS != get_access_keys()){
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
if(!S3fsCurl::IsSetAccessKeys()){
S3FS_PRN_EXIT("could not establish security credentials, check documentation.");
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
// More error checking on the access key pair can be done
// like checking for appropriate lengths and characters
}
// 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();
exit(EXIT_FAILURE);
}
// check IBM IAM requirements
if(is_ibm_iam_auth){
// check that default ACL is either public-read or private
acl_t defaultACL = S3fsCurl::GetDefaultAcl();
if(defaultACL != acl_t::PRIVATE && defaultACL != acl_t::PUBLIC_READ){
S3FS_PRN_EXIT("can only use 'public-read' or 'private' ACL while using ibm_iam_auth");
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
if(create_bucket && !S3fsCurl::IsSetAccessKeyID()){
S3FS_PRN_EXIT("missing service instance ID for bucket creation");
S3fsCurl::DestroyS3fsCurl();
s3fs_destroy_global_ssl();
exit(EXIT_FAILURE);
}
}
// 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 = bucket.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();
exit(exitcode);
}
// Check multipart / copy api for mix multipart uploading
if(nomultipart || nocopyapi || norenameapi){
FdEntity::SetNoMixMultipart();
}
// 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();
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;
}
// 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();
// 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
*/
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