rgw: return 404 on no bucket public access block

Return 404 when there is no public access block on the bucket.

Fixes: https://tracker.ceph.com/issues/64492
Signed-off-by: Seena Fallah <[email protected]>

Author: clwluvw

src/rgw/rgw_common.cc

@@ -131,6 +131,7 @@ rgw_http_errors rgw_http_s3_errors({
     { ERR_ZERO_IN_URL, {400, "InvalidRequest" }},
     { ERR_NO_SUCH_TAG_SET, {404, "NoSuchTagSet"}},
     { ERR_NO_SUCH_BUCKET_ENCRYPTION_CONFIGURATION, {404, "ServerSideEncryptionConfigurationNotFoundError"}},
+    { ERR_NO_SUCH_PUBLIC_ACCESS_BLOCK_CONFIGURATION, {404, "NoSuchPublicAccessBlockConfiguration"}},
 });
 
 rgw_http_errors rgw_http_swift_errors({

src/rgw/rgw_common.h

@@ -282,6 +282,7 @@ static inline const char* to_mime_type(const RGWFormat f)
 #define ERR_NO_SUCH_OBJECT_LOCK_CONFIGURATION  2046
 #define ERR_INVALID_RETENTION_PERIOD 2047
 #define ERR_NO_SUCH_BUCKET_ENCRYPTION_CONFIGURATION 2048
+#define ERR_NO_SUCH_PUBLIC_ACCESS_BLOCK_CONFIGURATION 2049
 #define ERR_USER_SUSPENDED       2100
 #define ERR_INTERNAL_ERROR       2200
 #define ERR_NOT_IMPLEMENTED      2201

src/rgw/rgw_op.cc

@@ -8997,7 +8997,10 @@ void RGWGetBucketPublicAccessBlock::execute(optional_yield y)
       aiter == attrs.end()) {
     ldpp_dout(this, 0) << "can't find bucket IAM POLICY attr bucket_name = "
 		       << s->bucket_name << dendl;
-    // return the default;
+
+    op_ret = -ERR_NO_SUCH_PUBLIC_ACCESS_BLOCK_CONFIGURATION;
+    s->err.message = "The public access block configuration was not found";
+
     return;
   } else {
     bufferlist::const_iterator iter{&aiter->second};