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|
//==========================================================================
//
// misc.cxx
//
// POSIX misc function implementations
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos 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 or (at your option) any later
// version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): nickg
// Contributors: nickg
// Date: 2000-07-18
// Purpose: POSIX misc function implementation
// Description: This file contains the implementation of miscellaneous POSIX
// functions that do not belong elsewhere.
//
//
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <pkgconf/system.h>
#include <pkgconf/hal.h>
#include <pkgconf/kernel.h>
#include <pkgconf/posix.h>
#include <cyg/kernel/ktypes.h> // base kernel types
#include <cyg/infra/cyg_trac.h> // tracing macros
#include <cyg/infra/cyg_ass.h> // assertion macros
#include "pprivate.h" // POSIX private header
#include <unistd.h>
#ifdef CYGPKG_POSIX_UTSNAME
#include <sys/utsname.h> // My header
#endif
#include <string.h> // strcpy
#include <limits.h>
#include <time.h>
#include <cyg/kernel/sched.hxx>
#include <cyg/kernel/sched.inl>
// -------------------------------------------------------------------------
// Supply some suitable values for constants that may not be present
// in all configurations.
#ifndef MQ_OPEN_MAX
#define MQ_OPEN_MAX 0
#endif
#ifndef MQ_PRIO_MAX
#define MQ_PRIO_MAX 0
#endif
// -------------------------------------------------------------------------
#define __string(_x) #_x
#define __xstring(_x) __string(_x)
// -------------------------------------------------------------------------
// uname()
#ifdef CYGPKG_POSIX_UTSNAME
__externC int uname( struct utsname *name )
{
CYG_REPORT_FUNCTYPE( "returning %d" );
strcpy( name->sysname, "eCos" );
strcpy( name->nodename, "" ); // should use gethostname()
strcpy( name->release, __xstring( CYGNUM_KERNEL_VERSION_MAJOR ) );
strcpy( name->version, __xstring( CYGNUM_KERNEL_VERSION_MINOR ) );
strcpy( name->machine, "" );
CYG_REPORT_RETVAL(0);
return 0;
}
#endif
// -------------------------------------------------------------------------
// sysconf()
#define SC_CASE( _name, _val ) case _name: return _val
__externC long sysconf( int name )
{
switch( name )
{
SC_CASE( _SC_AIO_LISTIO_MAX, AIO_LISTIO_MAX );
SC_CASE( _SC_AIO_MAX, AIO_MAX );
SC_CASE( _SC_AIO_PRIO_DELTA_MAX, AIO_PRIO_DELTA_MAX );
SC_CASE( _SC_ARG_MAX, ARG_MAX );
SC_CASE( _SC_CHILD_MAX, CHILD_MAX );
SC_CASE( _SC_DELAYTIMER_MAX, DELAYTIMER_MAX );
SC_CASE( _SC_GETGR_R_SIZE_MAX, 0 );
SC_CASE( _SC_GETPW_R_SIZE_MAX, 0 );
SC_CASE( _SC_LOGIN_NAME_MAX, LOGIN_NAME_MAX );
#ifdef CYGPKG_POSIX_MQUEUES
SC_CASE( _SC_MQ_OPEN_MAX, MQ_OPEN_MAX );
SC_CASE( _SC_MQ_PRIO_MAX, MQ_PRIO_MAX );
#endif
SC_CASE( _SC_NGROUPS_MAX, NGROUPS_MAX );
SC_CASE( _SC_OPEN_MAX, OPEN_MAX );
SC_CASE( _SC_PAGESIZE, PAGESIZE );
SC_CASE( _SC_RTSIG_MAX, RTSIG_MAX );
#ifdef CYGPKG_POSIX_SEMAPHORES
SC_CASE( _SC_SEM_NSEMS_MAX, SEM_NSEMS_MAX );
SC_CASE( _SC_SEM_VALUE_MAX, SEM_VALUE_MAX );
#endif
SC_CASE( _SC_SIGQUEUE_MAX, SIGQUEUE_MAX );
SC_CASE( _SC_STREAM_MAX, STREAM_MAX );
#ifdef CYGPKG_POSIX_PTHREAD
SC_CASE( _SC_THREAD_DESTRUCTOR_ITERATIONS, PTHREAD_DESTRUCTOR_ITERATIONS );
SC_CASE( _SC_THREAD_KEYS_MAX, PTHREAD_KEYS_MAX );
SC_CASE( _SC_THREAD_STACK_MIN, PTHREAD_STACK_MIN );
SC_CASE( _SC_THREAD_THREADS_MAX, PTHREAD_THREADS_MAX );
#endif
SC_CASE( _SC_TIMER_MAX, TIMER_MAX );
SC_CASE( _SC_TTY_NAME_MAX, TTY_NAME_MAX );
SC_CASE( _SC_TZNAME_MAX, TZNAME_MAX );
SC_CASE( _SC_VERSION, _POSIX_VERSION );
#ifdef CYGPKG_POSIX_TIMERS
case _SC_CLK_TCK:
{
struct timespec ts;
ts.tv_sec = 1;
ts.tv_nsec = 0;
cyg_tick_count ticks = cyg_timespec_to_ticks( &ts );
return ticks;
}
#endif
case _SC_ASYNCHRONOUS_IO:
#ifdef _POSIX_ASYNCHRONOUS_IO
return 1;
#else
return -1;
#endif
case _SC_FSYNC:
#ifdef _POSIX_FSYNC
return 1;
#else
return -1;
#endif
case _SC_JOB_CONTROL:
#ifdef _POSIX_JOB_CONTROL
return 1;
#else
return -1;
#endif
case _SC_MAPPED_FILES:
#ifdef _POSIX_MAPPED_FILES
return 1;
#else
return -1;
#endif
case _SC_MEMLOCK:
#ifdef _POSIX_MEMLOCK
return 1;
#else
return -1;
#endif
case _SC_MEMLOCK_RANGE:
#ifdef _POSIX_MEMLOCK_RANGE
return 1;
#else
return -1 ;
#endif
case _SC_MEMORY_PROTECTION:
#ifdef _POSIX_MEMORY_PROTECTION
return 1;
#else
return -1;
#endif
case _SC_MESSAGE_PASSING:
#ifdef _POSIX_MESSAGE_PASSING
return 1;
#else
return -1;
#endif
case _SC_PRIORITIZED_IO:
#ifdef _POSIX_PRIORITIZED_IO
return 1;
#else
return -1;
#endif
case _SC_PRIORITY_SCHEDULING:
#ifdef _POSIX_PRIORITY_SCHEDULING
return 1;
#else
return -1;
#endif
case _SC_REALTIME_SIGNALS:
#ifdef _POSIX_REALTIME_SIGNALS
return 1;
#else
return -1;
#endif
case _SC_SAVED_IDS:
#ifdef _POSIX_SAVED_IDS
return 1;
#else
return -1;
#endif
case _SC_SEMAPHORES:
#ifdef _POSIX_SEMAPHORES
return 1;
#else
return -1;
#endif
case _SC_SHARED_MEMORY_OBJECTS:
#ifdef _POSIX_SHARED_MEMORY_OBJECTS
return 1;
#else
return -1;
#endif
case _SC_SYNCHRONIZED_IO:
#ifdef _POSIX_SYNCHRONIZED_IO
return 1;
#else
return -1;
#endif
case _SC_THREADS:
#ifdef _POSIX_THREADS
return 1;
#else
return -1;
#endif
case _SC_THREAD_ATTR_STACKADDR:
#ifdef _POSIX_THREAD_ATTR_STACKADDR
return 1;
#else
return -1;
#endif
case _SC_THREAD_ATTR_STACKSIZE:
#ifdef _POSIX_THREAD_ATTR_STACKSIZE
return 1;
#else
return -1;
#endif
case _SC_THREAD_PRIO_INHERIT:
#ifdef _POSIX_THREAD_PRIO_INHERIT
return 1;
#else
return -1;
#endif
case _SC_THREAD_PRIO_PROTECT:
#ifdef _POSIX_THREAD_PRIO_PROTECT
return 1;
#else
return -1;
#endif
case _SC_THREAD_PRIORITY_SCHEDULING:
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
return 1;
#else
return -1;
#endif
case _SC_THREAD_PROCESS_SHARED:
#ifdef _POSIX_THREAD_PROCESS_SHARED
return 1;
#else
return -1;
#endif
case _SC_THREAD_SAFE_FUNCTIONS:
#ifdef _POSIX_THREAD_SAFE_FUNCTIONS
return 1;
#else
return -1;
#endif
case _SC_TIMERS:
#ifdef _POSIX_TIMERS
return 1;
#else
return -1;
#endif
default:
errno = EINVAL;
return -1;
}
}
//==========================================================================
// Some trivial compatibility functions.
// These are merely present to permit existing code to be ported a little
// more easily, and to provide adequate standards compatibility.
__externC pid_t getpid ( void ) { return 42; }
__externC pid_t getppid ( void ) { return 41; }
__externC uid_t getuid ( void ) { return 666; }
__externC uid_t geteuid ( void ) { return 666; }
__externC gid_t getgid ( void ) { return 88; }
__externC gid_t getegid ( void ) { return 88; }
__externC int setuid ( uid_t uid ) { errno = EPERM; return -1; }
__externC int setgid ( uid_t gid ) { errno = EPERM; return -1; }
__externC int getgroups ( int gidsetsize, gid_t grouplist[] ) { return 0; };
__externC pid_t getpgrp ( void ) { return 42; }
__externC pid_t setsid ( void ) { errno = EPERM; return -1; }
__externC int setpgid ( pid_t pid, pid_t pgid ) { errno = ENOSYS; return -1; }
//==========================================================================
// Exports to other packages
// -------------------------------------------------------------------------
// POSIX API function entry
__externC void cyg_posix_function_start()
{
Cyg_Thread *self = Cyg_Scheduler::get_current_thread();
// Inhibit ASR delivery in this function until it returns.
self->set_asr_inhibit();
}
// -------------------------------------------------------------------------
__externC void cyg_posix_function_finish()
{
Cyg_Thread *self = Cyg_Scheduler::get_current_thread();
// Re-allow ASR delivery.
self->clear_asr_inhibit();
// After clearing the inhibit flag, blip the scheduler lock
// to get any pending ASRs delivered.
Cyg_Scheduler::lock();
Cyg_Scheduler::unlock();
}
// -------------------------------------------------------------------------
// EOF misc.cxx
|
