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![Pedro F. Giffuni](/assets/img/avatar_default.png)
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
193 lines
4.7 KiB
C
193 lines
4.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1992 Keith Muller.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Keith Muller of the University of California, San Diego.
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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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)tty_subs.c 8.2 (Berkeley) 4/18/94";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include "pax.h"
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#include "extern.h"
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#include <stdarg.h>
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/*
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* routines that deal with I/O to and from the user
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*/
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#define DEVTTY "/dev/tty" /* device for interactive i/o */
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static FILE *ttyoutf = NULL; /* output pointing at control tty */
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static FILE *ttyinf = NULL; /* input pointing at control tty */
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/*
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* tty_init()
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* try to open the controlling terminal (if any) for this process. if the
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* open fails, future ops that require user input will get an EOF
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*/
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int
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tty_init(void)
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{
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int ttyfd;
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if ((ttyfd = open(DEVTTY, O_RDWR)) >= 0) {
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if ((ttyoutf = fdopen(ttyfd, "w")) != NULL) {
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if ((ttyinf = fdopen(ttyfd, "r")) != NULL)
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return(0);
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(void)fclose(ttyoutf);
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}
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(void)close(ttyfd);
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}
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if (iflag) {
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paxwarn(1, "Fatal error, cannot open %s", DEVTTY);
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return(-1);
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}
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return(0);
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}
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/*
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* tty_prnt()
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* print a message using the specified format to the controlling tty
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* if there is no controlling terminal, just return.
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*/
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void
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tty_prnt(const char *fmt, ...)
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{
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va_list ap;
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if (ttyoutf == NULL)
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return;
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va_start(ap, fmt);
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(void)vfprintf(ttyoutf, fmt, ap);
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va_end(ap);
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(void)fflush(ttyoutf);
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}
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/*
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* tty_read()
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* read a string from the controlling terminal if it is open into the
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* supplied buffer
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* Return:
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* 0 if data was read, -1 otherwise.
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*/
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int
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tty_read(char *str, int len)
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{
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char *pt;
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if ((--len <= 0) || (ttyinf == NULL) || (fgets(str,len,ttyinf) == NULL))
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return(-1);
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*(str + len) = '\0';
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/*
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* strip off that trailing newline
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*/
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if ((pt = strchr(str, '\n')) != NULL)
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*pt = '\0';
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return(0);
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}
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/*
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* paxwarn()
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* write a warning message to stderr. if "set" the exit value of pax
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* will be non-zero.
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*/
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void
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paxwarn(int set, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (set)
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exit_val = 1;
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/*
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* when vflag we better ship out an extra \n to get this message on a
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* line by itself
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*/
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if (vflag && vfpart) {
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(void)fflush(listf);
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(void)fputc('\n', stderr);
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vfpart = 0;
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}
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(void)fprintf(stderr, "%s: ", argv0);
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(void)vfprintf(stderr, fmt, ap);
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va_end(ap);
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(void)fputc('\n', stderr);
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}
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/*
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* syswarn()
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* write a warning message to stderr. if "set" the exit value of pax
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* will be non-zero.
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*/
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void
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syswarn(int set, int errnum, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (set)
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exit_val = 1;
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/*
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* when vflag we better ship out an extra \n to get this message on a
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* line by itself
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*/
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if (vflag && vfpart) {
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(void)fflush(listf);
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(void)fputc('\n', stderr);
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vfpart = 0;
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}
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(void)fprintf(stderr, "%s: ", argv0);
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(void)vfprintf(stderr, fmt, ap);
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va_end(ap);
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/*
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* format and print the errno
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*/
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if (errnum > 0)
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(void)fprintf(stderr, " <%s>", strerror(errnum));
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(void)fputc('\n', stderr);
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}
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