author | ysuenaga |
Tue, 16 Jul 2019 07:29:12 +0900 | |
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parent 50333 | 7cea35f78b50 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved. |
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* Copyright (c) 2012, 2018 SAP SE. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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|
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#include "precompiled.hpp" |
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#include "logging/log.hpp" |
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#include "runtime/interfaceSupport.inline.hpp" |
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#include "runtime/os.inline.hpp" |
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#include "services/attachListener.hpp" |
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#include "services/dtraceAttacher.hpp" |
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#include <signal.h> |
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#include <sys/socket.h> |
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#include <sys/stat.h> |
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#include <sys/types.h> |
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#include <sys/un.h> |
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#include <unistd.h> |
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#ifndef UNIX_PATH_MAX |
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#define UNIX_PATH_MAX sizeof(((struct sockaddr_un *)0)->sun_path) |
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#endif |
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// The attach mechanism on AIX uses a UNIX domain socket. An attach listener |
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// thread is created at startup or is created on-demand via a signal from |
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// the client tool. The attach listener creates a socket and binds it to a file |
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// in the filesystem. The attach listener then acts as a simple (single- |
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// threaded) server - it waits for a client to connect, reads the request, |
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// executes it, and returns the response to the client via the socket |
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// connection. |
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// |
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// As the socket is a UNIX domain socket it means that only clients on the |
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// local machine can connect. In addition there are two other aspects to |
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// the security: |
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// 1. The well known file that the socket is bound to has permission 400 |
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// 2. When a client connect, the SO_PEERID socket option is used to |
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// obtain the credentials of client. We check that the effective uid |
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// of the client matches this process. |
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// forward reference |
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class AixAttachOperation; |
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class AixAttachListener: AllStatic { |
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private: |
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// the path to which we bind the UNIX domain socket |
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static char _path[UNIX_PATH_MAX]; |
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static bool _has_path; |
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// Shutdown marker to prevent accept blocking during clean-up. |
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static bool _shutdown; |
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// the file descriptor for the listening socket |
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static int _listener; |
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static bool _atexit_registered; |
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// reads a request from the given connected socket |
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static AixAttachOperation* read_request(int s); |
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public: |
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enum { |
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ATTACH_PROTOCOL_VER = 1 // protocol version |
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}; |
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enum { |
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ATTACH_ERROR_BADVERSION = 101 // error codes |
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}; |
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static void set_path(char* path) { |
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if (path == NULL) { |
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_path[0] = '\0'; |
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_has_path = false; |
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} else { |
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strncpy(_path, path, UNIX_PATH_MAX); |
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_path[UNIX_PATH_MAX-1] = '\0'; |
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_has_path = true; |
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} |
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} |
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static void set_listener(int s) { _listener = s; } |
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// initialize the listener, returns 0 if okay |
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static int init(); |
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static char* path() { return _path; } |
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static bool has_path() { return _has_path; } |
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static int listener() { return _listener; } |
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// Shutdown marker to prevent accept blocking during clean-up |
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static void set_shutdown(bool shutdown) { _shutdown = shutdown; } |
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static bool is_shutdown() { return _shutdown; } |
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// write the given buffer to a socket |
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static int write_fully(int s, char* buf, int len); |
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static AixAttachOperation* dequeue(); |
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}; |
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class AixAttachOperation: public AttachOperation { |
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private: |
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// the connection to the client |
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int _socket; |
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public: |
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void complete(jint res, bufferedStream* st); |
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123 |
|
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void set_socket(int s) { _socket = s; } |
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int socket() const { return _socket; } |
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126 |
|
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AixAttachOperation(char* name) : AttachOperation(name) { |
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set_socket(-1); |
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} |
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130 |
}; |
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131 |
|
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// statics |
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char AixAttachListener::_path[UNIX_PATH_MAX]; |
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bool AixAttachListener::_has_path; |
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int AixAttachListener::_listener = -1; |
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bool AixAttachListener::_atexit_registered = false; |
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// Shutdown marker to prevent accept blocking during clean-up |
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bool AixAttachListener::_shutdown = false; |
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139 |
|
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// Supporting class to help split a buffer into individual components |
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class ArgumentIterator : public StackObj { |
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private: |
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char* _pos; |
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char* _end; |
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public: |
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ArgumentIterator(char* arg_buffer, size_t arg_size) { |
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_pos = arg_buffer; |
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_end = _pos + arg_size - 1; |
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} |
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char* next() { |
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if (*_pos == '\0') { |
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// advance the iterator if possible (null arguments) |
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if (_pos < _end) { |
154 |
_pos += 1; |
|
155 |
} |
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return NULL; |
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157 |
} |
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char* res = _pos; |
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char* next_pos = strchr(_pos, '\0'); |
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if (next_pos < _end) { |
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next_pos++; |
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} |
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_pos = next_pos; |
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164 |
return res; |
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165 |
} |
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166 |
}; |
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167 |
|
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// On AIX if sockets block until all data has been transmitted |
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// successfully in some communication domains a socket "close" may |
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// never complete. We have to take care that after the socket shutdown |
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// the listener never enters accept state. |
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172 |
|
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// atexit hook to stop listener and unlink the file that it is |
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// bound too. |
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175 |
|
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// Some modifications to the listener logic to prevent deadlocks on exit. |
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// 1. We Shutdown the socket here instead. AixAttachOperation::complete() is not the right place |
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// since more than one agent in a sequence in JPLIS live tests wouldn't work (Listener thread |
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// would be dead after the first operation completion). |
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// 2. close(s) may never return if the listener thread is in socket accept(). Unlinking the file |
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// should be sufficient for cleanup. |
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182 |
extern "C" { |
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static void listener_cleanup() { |
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184 |
AixAttachListener::set_shutdown(true); |
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int s = AixAttachListener::listener(); |
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186 |
if (s != -1) { |
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AixAttachListener::set_listener(-1); |
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::shutdown(s, 2); |
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189 |
} |
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190 |
if (AixAttachListener::has_path()) { |
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191 |
::unlink(AixAttachListener::path()); |
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192 |
AixAttachListener::set_path(NULL); |
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193 |
} |
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194 |
} |
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195 |
} |
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196 |
|
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197 |
// Initialization - create a listener socket and bind it to a file |
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198 |
|
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199 |
int AixAttachListener::init() { |
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200 |
char path[UNIX_PATH_MAX]; // socket file |
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201 |
char initial_path[UNIX_PATH_MAX]; // socket file during setup |
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int listener; // listener socket (file descriptor) |
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203 |
|
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204 |
// register function to cleanup |
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205 |
if (!_atexit_registered) { |
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206 |
_atexit_registered = true; |
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207 |
::atexit(listener_cleanup); |
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208 |
} |
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209 |
|
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210 |
int n = snprintf(path, UNIX_PATH_MAX, "%s/.java_pid%d", |
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211 |
os::get_temp_directory(), os::current_process_id()); |
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212 |
if (n < (int)UNIX_PATH_MAX) { |
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n = snprintf(initial_path, UNIX_PATH_MAX, "%s.tmp", path); |
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214 |
} |
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215 |
if (n >= (int)UNIX_PATH_MAX) { |
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216 |
return -1; |
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217 |
} |
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218 |
|
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219 |
// create the listener socket |
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220 |
listener = ::socket(PF_UNIX, SOCK_STREAM, 0); |
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221 |
if (listener == -1) { |
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222 |
return -1; |
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223 |
} |
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224 |
|
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225 |
// bind socket |
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226 |
struct sockaddr_un addr; |
30198 | 227 |
memset((void *)&addr, 0, sizeof(addr)); |
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addr.sun_family = AF_UNIX; |
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229 |
strcpy(addr.sun_path, initial_path); |
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230 |
::unlink(initial_path); |
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231 |
// We must call bind with the actual socketaddr length. This is obligatory for AS400. |
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int res = ::bind(listener, (struct sockaddr*)&addr, SUN_LEN(&addr)); |
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if (res == -1) { |
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234 |
::close(listener); |
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235 |
return -1; |
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236 |
} |
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237 |
|
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238 |
// put in listen mode, set permissions, and rename into place |
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239 |
res = ::listen(listener, 5); |
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240 |
if (res == 0) { |
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241 |
RESTARTABLE(::chmod(initial_path, S_IREAD|S_IWRITE), res); |
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242 |
if (res == 0) { |
50067 | 243 |
// make sure the file is owned by the effective user and effective group |
244 |
// e.g. the group could be inherited from the directory in case the s bit is set |
|
245 |
RESTARTABLE(::chown(initial_path, geteuid(), getegid()), res); |
|
246 |
if (res == 0) { |
|
247 |
res = ::rename(initial_path, path); |
|
248 |
} |
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249 |
} |
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250 |
} |
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251 |
if (res == -1) { |
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::close(listener); |
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253 |
::unlink(initial_path); |
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254 |
return -1; |
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255 |
} |
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256 |
set_path(path); |
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257 |
set_listener(listener); |
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258 |
set_shutdown(false); |
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259 |
|
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260 |
return 0; |
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261 |
} |
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262 |
|
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263 |
// Given a socket that is connected to a peer we read the request and |
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264 |
// create an AttachOperation. As the socket is blocking there is potential |
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265 |
// for a denial-of-service if the peer does not response. However this happens |
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266 |
// after the peer credentials have been checked and in the worst case it just |
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267 |
// means that the attach listener thread is blocked. |
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268 |
// |
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269 |
AixAttachOperation* AixAttachListener::read_request(int s) { |
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270 |
char ver_str[8]; |
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271 |
sprintf(ver_str, "%d", ATTACH_PROTOCOL_VER); |
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272 |
|
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273 |
// The request is a sequence of strings so we first figure out the |
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274 |
// expected count and the maximum possible length of the request. |
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275 |
// The request is: |
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276 |
// <ver>0<cmd>0<arg>0<arg>0<arg>0 |
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277 |
// where <ver> is the protocol version (1), <cmd> is the command |
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278 |
// name ("load", "datadump", ...), and <arg> is an argument |
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279 |
int expected_str_count = 2 + AttachOperation::arg_count_max; |
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280 |
const int max_len = (sizeof(ver_str) + 1) + (AttachOperation::name_length_max + 1) + |
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281 |
AttachOperation::arg_count_max*(AttachOperation::arg_length_max + 1); |
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282 |
|
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283 |
char buf[max_len]; |
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284 |
int str_count = 0; |
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285 |
|
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286 |
// Read until all (expected) strings have been read, the buffer is |
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287 |
// full, or EOF. |
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|
288 |
|
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|
289 |
int off = 0; |
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|
290 |
int left = max_len; |
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|
291 |
|
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|
292 |
do { |
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|
293 |
int n; |
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294 |
// Don't block on interrupts because this will |
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295 |
// hang in the clean-up when shutting down. |
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296 |
n = read(s, buf+off, left); |
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|
297 |
assert(n <= left, "buffer was too small, impossible!"); |
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|
298 |
buf[max_len - 1] = '\0'; |
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299 |
if (n == -1) { |
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300 |
return NULL; // reset by peer or other error |
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|
301 |
} |
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|
302 |
if (n == 0) { |
22831
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|
303 |
break; |
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|
304 |
} |
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|
305 |
for (int i=0; i<n; i++) { |
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|
306 |
if (buf[off+i] == 0) { |
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|
307 |
// EOS found |
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|
308 |
str_count++; |
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|
309 |
|
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|
310 |
// The first string is <ver> so check it now to |
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311 |
// check for protocol mis-match |
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|
312 |
if (str_count == 1) { |
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|
313 |
if ((strlen(buf) != strlen(ver_str)) || |
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|
314 |
(atoi(buf) != ATTACH_PROTOCOL_VER)) { |
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|
315 |
char msg[32]; |
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|
316 |
sprintf(msg, "%d\n", ATTACH_ERROR_BADVERSION); |
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|
317 |
write_fully(s, msg, strlen(msg)); |
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|
318 |
return NULL; |
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|
319 |
} |
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|
320 |
} |
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|
321 |
} |
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|
322 |
} |
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|
323 |
off += n; |
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|
324 |
left -= n; |
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|
325 |
} while (left > 0 && str_count < expected_str_count); |
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|
326 |
|
1e2ba1d62103
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|
327 |
if (str_count != expected_str_count) { |
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|
328 |
return NULL; // incomplete request |
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|
329 |
} |
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|
330 |
|
1e2ba1d62103
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|
331 |
// parse request |
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|
332 |
|
1e2ba1d62103
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|
333 |
ArgumentIterator args(buf, (max_len)-left); |
1e2ba1d62103
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|
334 |
|
1e2ba1d62103
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|
335 |
// version already checked |
1e2ba1d62103
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|
336 |
char* v = args.next(); |
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|
337 |
|
1e2ba1d62103
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|
338 |
char* name = args.next(); |
1e2ba1d62103
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|
339 |
if (name == NULL || strlen(name) > AttachOperation::name_length_max) { |
1e2ba1d62103
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|
340 |
return NULL; |
1e2ba1d62103
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diff
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|
341 |
} |
1e2ba1d62103
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|
342 |
|
1e2ba1d62103
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|
343 |
AixAttachOperation* op = new AixAttachOperation(name); |
1e2ba1d62103
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|
344 |
|
1e2ba1d62103
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|
345 |
for (int i=0; i<AttachOperation::arg_count_max; i++) { |
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|
346 |
char* arg = args.next(); |
1e2ba1d62103
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|
347 |
if (arg == NULL) { |
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|
348 |
op->set_arg(i, NULL); |
1e2ba1d62103
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|
349 |
} else { |
1e2ba1d62103
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|
350 |
if (strlen(arg) > AttachOperation::arg_length_max) { |
1e2ba1d62103
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diff
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|
351 |
delete op; |
1e2ba1d62103
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diff
changeset
|
352 |
return NULL; |
1e2ba1d62103
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|
353 |
} |
1e2ba1d62103
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|
354 |
op->set_arg(i, arg); |
1e2ba1d62103
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diff
changeset
|
355 |
} |
1e2ba1d62103
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|
356 |
} |
1e2ba1d62103
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|
357 |
|
1e2ba1d62103
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|
358 |
op->set_socket(s); |
1e2ba1d62103
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diff
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|
359 |
return op; |
1e2ba1d62103
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|
360 |
} |
1e2ba1d62103
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|
361 |
|
1e2ba1d62103
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|
362 |
|
1e2ba1d62103
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|
363 |
// Dequeue an operation |
1e2ba1d62103
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|
364 |
// |
35180
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8079125: [aix] clean up Linux-specific code remnants in AIX coding
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30198
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|
365 |
// In the Aix implementation there is only a single operation and clients |
22831
1e2ba1d62103
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|
366 |
// cannot queue commands (except at the socket level). |
1e2ba1d62103
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|
367 |
// |
1e2ba1d62103
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|
368 |
AixAttachOperation* AixAttachListener::dequeue() { |
1e2ba1d62103
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|
369 |
for (;;) { |
1e2ba1d62103
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|
370 |
int s; |
1e2ba1d62103
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|
371 |
|
1e2ba1d62103
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|
372 |
// wait for client to connect |
1e2ba1d62103
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|
373 |
struct sockaddr addr; |
1e2ba1d62103
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|
374 |
socklen_t len = sizeof(addr); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
375 |
memset(&addr, 0, len); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
376 |
// We must prevent accept blocking on the socket if it has been shut down. |
49742
1196aa0be8be
8201247: Various cleanups in the attach framework
clanger
parents:
49593
diff
changeset
|
377 |
// Therefore we allow interrupts and check whether we have been shut down already. |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
378 |
if (AixAttachListener::is_shutdown()) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
379 |
return NULL; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
380 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
381 |
s=::accept(listener(), &addr, &len); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
382 |
if (s == -1) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
383 |
return NULL; // log a warning? |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
384 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
385 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
386 |
// get the credentials of the peer and check the effective uid/guid |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
387 |
struct peercred_struct cred_info; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
388 |
socklen_t optlen = sizeof(cred_info); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
389 |
if (::getsockopt(s, SOL_SOCKET, SO_PEERID, (void*)&cred_info, &optlen) == -1) { |
49742
1196aa0be8be
8201247: Various cleanups in the attach framework
clanger
parents:
49593
diff
changeset
|
390 |
log_debug(attach)("Failed to get socket option SO_PEERID"); |
40103
3c3569845229
8162869: Small fixes for AIX perf memory and attach listener
clanger
parents:
36197
diff
changeset
|
391 |
::close(s); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
392 |
continue; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
393 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
394 |
|
50333
7cea35f78b50
8197387: jcmd started by "root" must be allowed to access all VM processes
dtitov
parents:
50067
diff
changeset
|
395 |
if (!os::Posix::matches_effective_uid_and_gid_or_root(cred_info.euid, cred_info.egid)) { |
7cea35f78b50
8197387: jcmd started by "root" must be allowed to access all VM processes
dtitov
parents:
50067
diff
changeset
|
396 |
log_debug(attach)("euid/egid check failed (%d/%d vs %d/%d)", |
7cea35f78b50
8197387: jcmd started by "root" must be allowed to access all VM processes
dtitov
parents:
50067
diff
changeset
|
397 |
cred_info.euid, cred_info.egid, geteuid(), getegid()); |
40103
3c3569845229
8162869: Small fixes for AIX perf memory and attach listener
clanger
parents:
36197
diff
changeset
|
398 |
::close(s); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
399 |
continue; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
400 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
401 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
402 |
// peer credential look okay so we read the request |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
403 |
AixAttachOperation* op = read_request(s); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
404 |
if (op == NULL) { |
36197
40b356f0cdf5
8150232: AIX cleanup: Integrate changes of 7178026 and others
clanger
parents:
35594
diff
changeset
|
405 |
::close(s); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
406 |
continue; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
407 |
} else { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
408 |
return op; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
409 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
410 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
411 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
412 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
413 |
// write the given buffer to the socket |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
414 |
int AixAttachListener::write_fully(int s, char* buf, int len) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
415 |
do { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
416 |
int n = ::write(s, buf, len); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
417 |
if (n == -1) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
418 |
if (errno != EINTR) return -1; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
419 |
} else { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
420 |
buf += n; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
421 |
len -= n; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
422 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
423 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
424 |
while (len > 0); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
425 |
return 0; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
426 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
427 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
428 |
// Complete an operation by sending the operation result and any result |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
429 |
// output to the client. At this time the socket is in blocking mode so |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
430 |
// potentially we can block if there is a lot of data and the client is |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
431 |
// non-responsive. For most operations this is a non-issue because the |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
432 |
// default send buffer is sufficient to buffer everything. In the future |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
433 |
// if there are operations that involves a very big reply then it the |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
434 |
// socket could be made non-blocking and a timeout could be used. |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
435 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
436 |
void AixAttachOperation::complete(jint result, bufferedStream* st) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
437 |
JavaThread* thread = JavaThread::current(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
438 |
ThreadBlockInVM tbivm(thread); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
439 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
440 |
thread->set_suspend_equivalent(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
441 |
// cleared by handle_special_suspend_equivalent_condition() or |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
442 |
// java_suspend_self() via check_and_wait_while_suspended() |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
443 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
444 |
// write operation result |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
445 |
char msg[32]; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
446 |
sprintf(msg, "%d\n", result); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
447 |
int rc = AixAttachListener::write_fully(this->socket(), msg, strlen(msg)); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
448 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
449 |
// write any result data |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
450 |
if (rc == 0) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
451 |
// Shutdown the socket in the cleanup function to enable more than |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
452 |
// one agent attach in a sequence (see comments to listener_cleanup()). |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
453 |
AixAttachListener::write_fully(this->socket(), (char*) st->base(), st->size()); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
454 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
455 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
456 |
// done |
36197
40b356f0cdf5
8150232: AIX cleanup: Integrate changes of 7178026 and others
clanger
parents:
35594
diff
changeset
|
457 |
::close(this->socket()); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
458 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
459 |
// were we externally suspended while we were waiting? |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
460 |
thread->check_and_wait_while_suspended(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
461 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
462 |
delete this; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
463 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
464 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
465 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
466 |
// AttachListener functions |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
467 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
468 |
AttachOperation* AttachListener::dequeue() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
469 |
JavaThread* thread = JavaThread::current(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
470 |
ThreadBlockInVM tbivm(thread); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
471 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
472 |
thread->set_suspend_equivalent(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
473 |
// cleared by handle_special_suspend_equivalent_condition() or |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
474 |
// java_suspend_self() via check_and_wait_while_suspended() |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
475 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
476 |
AttachOperation* op = AixAttachListener::dequeue(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
477 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
478 |
// were we externally suspended while we were waiting? |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
479 |
thread->check_and_wait_while_suspended(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
480 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
481 |
return op; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
482 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
483 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
484 |
// Performs initialization at vm startup |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
485 |
// For AIX we remove any stale .java_pid file which could cause |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
486 |
// an attaching process to think we are ready to receive on the |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
487 |
// domain socket before we are properly initialized |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
488 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
489 |
void AttachListener::vm_start() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
490 |
char fn[UNIX_PATH_MAX]; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
491 |
struct stat64 st; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
492 |
int ret; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
493 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
494 |
int n = snprintf(fn, UNIX_PATH_MAX, "%s/.java_pid%d", |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
495 |
os::get_temp_directory(), os::current_process_id()); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
changeset
|
496 |
assert(n < (int)UNIX_PATH_MAX, "java_pid file name buffer overflow"); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
497 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
498 |
RESTARTABLE(::stat64(fn, &st), ret); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
499 |
if (ret == 0) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
500 |
ret = ::unlink(fn); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
501 |
if (ret == -1) { |
40625
6b45fb9188f9
8157236: attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file
dsamersoff
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40103
diff
changeset
|
502 |
log_debug(attach)("Failed to remove stale attach pid file at %s", fn); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
503 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
504 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
505 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
506 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
507 |
int AttachListener::pd_init() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
508 |
JavaThread* thread = JavaThread::current(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
509 |
ThreadBlockInVM tbivm(thread); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
510 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
511 |
thread->set_suspend_equivalent(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
512 |
// cleared by handle_special_suspend_equivalent_condition() or |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
513 |
// java_suspend_self() via check_and_wait_while_suspended() |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
514 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
515 |
int ret_code = AixAttachListener::init(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
516 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
517 |
// were we externally suspended while we were waiting? |
1e2ba1d62103
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simonis
parents:
diff
changeset
|
518 |
thread->check_and_wait_while_suspended(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
519 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
520 |
return ret_code; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
521 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
522 |
|
55682
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
523 |
bool AttachListener::check_socket_file() { |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
524 |
int ret; |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
525 |
struct stat64 st; |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
526 |
ret = stat64(AixAttachListener::path(), &st); |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
527 |
if (ret == -1) { // need to restart attach listener. |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
528 |
log_debug(attach)("Socket file %s does not exist - Restart Attach Listener", |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
529 |
AixAttachListener::path()); |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
530 |
|
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
531 |
listener_cleanup(); |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
532 |
|
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
533 |
// wait to terminate current attach listener instance... |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
534 |
while (AttachListener::transit_state(AL_INITIALIZING, |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
535 |
AL_NOT_INITIALIZED) != AL_NOT_INITIALIZED) { |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
536 |
os::naked_yield(); |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
537 |
} |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
538 |
return is_init_trigger(); |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
539 |
} |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
540 |
return false; |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
541 |
} |
70fab3a8ff02
8225690: Multiple AttachListener threads can be created
ysuenaga
parents:
50333
diff
changeset
|
542 |
|
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
543 |
// Attach Listener is started lazily except in the case when |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
544 |
// +ReduseSignalUsage is used |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
545 |
bool AttachListener::init_at_startup() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
546 |
if (ReduceSignalUsage) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
547 |
return true; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
548 |
} else { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
549 |
return false; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
550 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
551 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
552 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
553 |
// If the file .attach_pid<pid> exists in the working directory |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
554 |
// or /tmp then this is the trigger to start the attach mechanism |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
555 |
bool AttachListener::is_init_trigger() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
556 |
if (init_at_startup() || is_initialized()) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
557 |
return false; // initialized at startup or already initialized |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
558 |
} |
49742
1196aa0be8be
8201247: Various cleanups in the attach framework
clanger
parents:
49593
diff
changeset
|
559 |
char fn[PATH_MAX + 1]; |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
560 |
int ret; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
561 |
struct stat64 st; |
49742
1196aa0be8be
8201247: Various cleanups in the attach framework
clanger
parents:
49593
diff
changeset
|
562 |
sprintf(fn, ".attach_pid%d", os::current_process_id()); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
563 |
RESTARTABLE(::stat64(fn, &st), ret); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
564 |
if (ret == -1) { |
40625
6b45fb9188f9
8157236: attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file
dsamersoff
parents:
40103
diff
changeset
|
565 |
log_trace(attach)("Failed to find attach file: %s, trying alternate", fn); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
566 |
snprintf(fn, sizeof(fn), "%s/.attach_pid%d", |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
567 |
os::get_temp_directory(), os::current_process_id()); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
568 |
RESTARTABLE(::stat64(fn, &st), ret); |
40625
6b45fb9188f9
8157236: attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file
dsamersoff
parents:
40103
diff
changeset
|
569 |
if (ret == -1) { |
6b45fb9188f9
8157236: attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file
dsamersoff
parents:
40103
diff
changeset
|
570 |
log_debug(attach)("Failed to find attach file: %s", fn); |
6b45fb9188f9
8157236: attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file
dsamersoff
parents:
40103
diff
changeset
|
571 |
} |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
572 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
573 |
if (ret == 0) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
574 |
// simple check to avoid starting the attach mechanism when |
50333
7cea35f78b50
8197387: jcmd started by "root" must be allowed to access all VM processes
dtitov
parents:
50067
diff
changeset
|
575 |
// a bogus non-root user creates the file |
7cea35f78b50
8197387: jcmd started by "root" must be allowed to access all VM processes
dtitov
parents:
50067
diff
changeset
|
576 |
if (os::Posix::matches_effective_uid_or_root(st.st_uid)) { |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
577 |
init(); |
49742
1196aa0be8be
8201247: Various cleanups in the attach framework
clanger
parents:
49593
diff
changeset
|
578 |
log_trace(attach)("Attach triggered by %s", fn); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
579 |
return true; |
40625
6b45fb9188f9
8157236: attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file
dsamersoff
parents:
40103
diff
changeset
|
580 |
} else { |
6b45fb9188f9
8157236: attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file
dsamersoff
parents:
40103
diff
changeset
|
581 |
log_debug(attach)("File %s has wrong user id %d (vs %d). Attach is not triggered", fn, st.st_uid, geteuid()); |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
582 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
583 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
584 |
return false; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
585 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
586 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
587 |
// if VM aborts then remove listener |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
588 |
void AttachListener::abort() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
589 |
listener_cleanup(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
590 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
591 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
592 |
void AttachListener::pd_data_dump() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
593 |
os::signal_notify(SIGQUIT); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
594 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
595 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
596 |
AttachOperationFunctionInfo* AttachListener::pd_find_operation(const char* n) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
597 |
return NULL; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
598 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
599 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
600 |
jint AttachListener::pd_set_flag(AttachOperation* op, outputStream* out) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
601 |
out->print_cr("flag '%s' cannot be changed", op->arg(0)); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
602 |
return JNI_ERR; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
603 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
604 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
605 |
void AttachListener::pd_detachall() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
606 |
// Cleanup server socket to detach clients. |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
607 |
listener_cleanup(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
changeset
|
608 |
} |