newlib/winsup/cygserver/sem.cc
Corinna Vinschen 282113ba89 Don't use safe_new but new throughout. Fix copyright dates
throughout.
	* Makefile.in: Accomodate all new files and name changes.
	Add a *.d dependency.
	(sbindir): Add.
	(etcdir): Drop in favor of more appropriate sysconfdir definition.
	(sysconfdir): Add.
	(CXXFLAGS): Add -MMD flag. Add SYSCONFDIR definition.
	(.SUFFIXES): Add.
	(install): Add action items.
	(libclean): New target.
	(fullclean): Ditto.
	* bsd_helper.cc: New file.
	* bsd_helper.h: Ditto.
	* bsd_log.cc: Ditto.
	* bsd_log.h: Ditto.
	* bsd_mutex.cc: Ditto.
	* bsd_mutex.h: Ditto.
	* client.cc: Rearrange to build as less as possible if
	__INSIDE_CYGWIN__.
	(client_request::handle_request): Add Message Queue and Semaphore
	handling.
	* cygserver.cc: Rearrange to build as less as possible if
	__INSIDE_CYGWIN__. Use new debug/log/panic logging functions.
	(DEF_CONFIG_FILE): New definition for configuration file.  Use
	throughout.
	(getfunc): Remove.
	(__cygserver__printf): Remove.
	(client_request_attach_tty::serve): Return error if impersonation
	fails.
	(print_usage): Pump up help message.
	(print_version): Add output of default configuration file.
	(main): Accommodate new options.  Allow overwrite of threading options
	from config file.  Call several new initialization functions.  Drop
	printing dots.  Don't define SIGHANDLE inline.
	* cygserver.conf: New file.
	* cygserver_process.h: Rename to process.h.
	* cygserver_transport.h: Rename to transport.h.
	* cygserver_transport_pipes.h: Rename to transport_pipes.h.
	* cygserver_transport_sockets.h: Rename to transport_sockets.h.
	* msg.cc: Rewrite.
	* sem.cc: Rewrite.
	* shm.cc: Rewrite.
	* sysv_msg.cc: New file, derived from FreeBSD version 1.52.
	* sysv_sem.cc: New file, derived from FreeBSD version 1.66.
	* sysv_shm.cc: New file, derived from FreeBSD version 1.89.
	* threaded_queue.cc: Rearrange to build as less as possible if
	__INSIDE_CYGWIN__.
	* transport.cc (transport_layer_base::impersonate_client): Define bool.
	(transport_layer_base::revert_to_self): Ditto.
	* transport.h (transport_layer_base::impersonate_client): Declare bool.
	(transport_layer_base::revert_to_self): Ditto.
	* transport_pipes.cc (transport_layer_pipes::transport_layer_pipes):
	Don't call init_security.
	(init_security): Remove.
	(transport_layer_pipes::accept): Use global sec_all_nih.
	(transport_layer_pipes::connect): Ditto.
	(transport_layer_pipes::impersonate_client): Define bool.
	(transport_layer_pipes::revert_to_self): Ditt.
	* transport_pipes.h (transport_layer_pipes::impersonate_client): Declare
	bool.
	(transport_layer_pipes::revert_to_self): Ditto.
	* woutsup.h: Include bsd compatibility headers.
	(SIGHANDLE): Add definition.
	(__cygserver__printf): Remove definition.
	(__noop_printf): Ditto.
	(debug_printf): Define using debug.
	(syscall_printf): Define using log.
	(system_printf): Ditto.
	Drop all other _printf definitions.
2003-11-19 18:49:41 +00:00

102 lines
2.5 KiB
C++

/* sem.cc: Single unix specification IPC interface for Cygwin.
Copyright 2003 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifdef __OUTSIDE_CYGWIN__
#include "woutsup.h"
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "cygserver.h"
#include "process.h"
#include "transport.h"
#include "cygserver_ipc.h"
#include "cygserver_sem.h"
client_request_sem::client_request_sem ()
: client_request (CYGSERVER_REQUEST_SEM,
&_parameters, sizeof (_parameters))
{
}
void
client_request_sem::serve (transport_layer_base *const conn,
process_cache *const cache)
{
if (msglen () != sizeof (_parameters.in))
{
syscall_printf ("bad request body length: expecting %lu bytes, got %lu",
sizeof (_parameters), msglen ());
error_code (EINVAL);
msglen (0);
return;
}
if (support_semaphores == TUN_FALSE)
{
syscall_printf ("Semaphore support not started");
error_code (ENOSYS);
_parameters.out.ret = -1;
msglen (sizeof (_parameters.out));
return;
}
process *const client = cache->process (_parameters.in.ipcblk.cygpid,
_parameters.in.ipcblk.winpid);
if (!client)
{
error_code (EAGAIN);
msglen (0);
return;
}
if (!conn->impersonate_client ())
{
client->release ();
error_code (EACCES);
msglen (0);
return;
}
if (!adjust_identity_info (&_parameters.in.ipcblk))
{
client->release ();
conn->revert_to_self ();
error_code (EACCES);
msglen (0);
return;
}
/* Early revert_to_self since IPC code runs in kernel mode. */
conn->revert_to_self ();
thread td = { client, &_parameters.in.ipcblk, {-1, -1} };
int res;
switch (_parameters.in.semop)
{
case SEMOP_semctl:
res = semctl (&td, &_parameters.in.ctlargs);
break;
case SEMOP_semget:
res = semget (&td, &_parameters.in.getargs);
break;
case SEMOP_semop:
res = semop (&td, &_parameters.in.opargs);
break;
}
/* Allocated by the call to adjust_identity_info(). */
if (_parameters.in.ipcblk.gidlist)
free (_parameters.in.ipcblk.gidlist);
client->release ();
error_code (res);
_parameters.out.ret = td.td_retval[0];
msglen (sizeof (_parameters.out));
}
#endif /* __OUTSIDE_CYGWIN__ */