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4d846d260e
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <errno.h>
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#include <paths.h>
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#include <stdio.h>
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#include <string.h>
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#define LEN_PATH_DEV (sizeof(_PATH_DEV) - 1)
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char *
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ctermid(char *s)
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{
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static char def[sizeof(_PATH_DEV) + SPECNAMELEN];
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struct stat sb;
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size_t dlen;
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int sverrno;
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if (s == NULL) {
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s = def;
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dlen = sizeof(def) - LEN_PATH_DEV;
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} else
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dlen = L_ctermid - LEN_PATH_DEV;
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strcpy(s, _PATH_TTY);
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/* Attempt to perform a lookup of the actual TTY pathname. */
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sverrno = errno;
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if (stat(_PATH_TTY, &sb) == 0 && S_ISCHR(sb.st_mode))
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(void)sysctlbyname("kern.devname", s + LEN_PATH_DEV,
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&dlen, &sb.st_rdev, sizeof(sb.st_rdev));
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errno = sverrno;
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return (s);
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}
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char *
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ctermid_r(char *s)
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{
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return (s != NULL ? ctermid(s) : NULL);
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}
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