posix/src/pthreadgetnamenp.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (c) 2017 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #define _GNU_SOURCE
0029
0030 #ifdef HAVE_CONFIG_H
0031 #include "config.h"
0032 #endif
0033
0034 #include <pthread.h>
0035 #include <errno.h>
0036 #include <string.h>
0037
0038 #include <rtems/score/threadimpl.h>
0039
0040 int pthread_getname_np( pthread_t thread, char *name, size_t len )
0041 {
0042   Thread_Control   *the_thread;
0043   ISR_lock_Context  lock_context;
0044   size_t            actual_len;
0045
0046   _Objects_Allocator_lock();
0047   the_thread = _Thread_Get( thread, &lock_context );
0048
0049   if ( the_thread == NULL ) {
0050     _Objects_Allocator_unlock();
0051     strlcpy(name, "", len);
0052     return ESRCH;
0053   }
0054
0055   _ISR_lock_ISR_enable( &lock_context );
0056   actual_len = _Thread_Get_name( the_thread, name, len );
0057   _Objects_Allocator_unlock();
0058
0059   if ( actual_len >= len ) {
0060     return ERANGE;
0061   }
0062
0063   return 0;
0064 }