bf733f7213
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Change-Id: I82a60ded48ea3437bd5f2b4fe328294d7077b040
59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/****************************************************************************
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* libs/libc/stdlib/lib_ptsname.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#ifdef CONFIG_PSEUDOTERM
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ptsname
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*
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* Description:
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* The ptsname() function returns the name of the slave pseudoterminal
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* device corresponding to the master referred to by fd.
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*
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* Returned Value:
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* On success, ptsname() returns a pointer to a string in static storage
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* which will be overwritten by subsequent calls. This pointer must not
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* be freed. On failure, NULL is returned.
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*
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* ENOTTY fd does not refer to a pseudoterminal master device.
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*
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****************************************************************************/
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FAR char *ptsname(int fd)
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{
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static char devname[16];
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int ret = ptsname_r(fd, devname, 16);
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return ret < 0 ? NULL : devname;
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}
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#endif /* CONFIG_PSEUDOTERM */
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