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Improved processing when HEAD response is 400

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This commit is contained in:
Takeshi Nakatani 2021-02-13 05:13:37 +00:00 committed by Andrew Gaul
parent 493802a605
commit 4da56acdcc
2 changed files with 32 additions and 4 deletions
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5
src/curl.cpp
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@ -2310,8 +2310,13 @@ int S3fsCurl::RequestPerform(bool dontAddAuthHeaders /*=false*/)
break;
case 400:
if(op == "HEAD"){
S3FS_PRN_ERR("HEAD HTTP response code %ld, returning EPERM. Body Text: %s", responseCode, bodydata.str());
result = -EPERM;
}else{
S3FS_PRN_ERR("HTTP response code %ld, returning EIO. Body Text: %s", responseCode, bodydata.str());
result = -EIO;
}
break;
case 403:

27
src/s3fs.cpp
View File

@ -399,7 +399,26 @@ static int get_object_attribute(const char* path, struct stat* pstbuf, headers_t
s3fscurl.DestroyCurlHandle();
// if not found target path object, do over checking
if(0 != result){
if(-EPERM == result){
// [NOTE]
// In case of a permission error, it exists in directory
// file list but inaccessible. So there is a problem that
// it will send a HEAD request every time, because it is
// not registered in the Stats cache.
// Therefore, even if the file has a permission error, it
// should be registered in the Stats cache. However, if
// the response without modifiying is registered in the
// cache, the file permission will be 0644(umask dependent)
// because the meta header does not exist.
// Thus, set the mode of 0000 here in the meta header so
// that s3fs can print a permission error when the file
// is actually accessed.
// It is better not to set meta header other than mode,
// so do not do it.
//
(*pheader)["x-amz-meta-mode"] = str(0);
}else if(0 != result){
if(overcheck){
// when support_compat_dir is disabled, strpath maybe have "_$folder$".
if('/' != strpath[strpath.length() - 1] && std::string::npos == strpath.find("_$folder$", 0)){
@ -447,7 +466,11 @@ static int get_object_attribute(const char* path, struct stat* pstbuf, headers_t
}
}
if(0 != result){
// [NOTE]
// If the file is listed but not allowed access, put it in
// the positive cache instead of the negative cache.
//
if(0 != result && -EPERM != result){
// finally, "path" object did not find. Add no object cache.
strpath = path; // reset original
StatCache::getStatCacheData()->AddNoObjectCache(strpath);