41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
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* Copyright (c) 2013, 2014, 2016 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* unistd/ttyname.c
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* Returns the pathname of a terminal.
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*/
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#include <sys/ioctl.h>
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#include <limits.h>
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#include <unistd.h>
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#if !defined(TTY_NAME_MAX)
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#include <sortix/limits.h>
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#endif
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char* ttyname(int fd)
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{
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static char name[TTY_NAME_MAX+1];
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name[0] = '/';
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name[1] = 'd';
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name[2] = 'e';
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name[3] = 'v';
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name[4] = '/';
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if ( ioctl(fd, TIOCGNAME, name + 5) < 0 )
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return NULL;
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return name;
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}
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