Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	bin/pax/tty_subs.c	Lines:	26	51	51.0 %
Date:	2017-11-13	Branches:	8	24	33.3 %


/*	$OpenBSD: tty_subs.c,v 1.17 2016/08/26 04:22:13 guenther Exp $	*/
/*	$NetBSD: tty_subs.c,v 1.5 1995/03/21 09:07:52 cgd Exp $	*/

/*-
 * Copyright (c) 1992 Keith Muller.
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Keith Muller of the University of California, San Diego.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "pax.h"
#include "extern.h"

/*
 * routines that deal with I/O to and from the user
 */

#define DEVTTY		"/dev/tty"	/* device for interactive i/o */
static FILE *ttyoutf = NULL;		/* output pointing at control tty */
static FILE *ttyinf = NULL;		/* input pointing at control tty */

/*
 * tty_init()
 *	try to open the controlling terminal (if any) for this process. if the
 *	open fails, future ops that require user input will get an EOF
 */

int
tty_init(void)
{
	int ttyfd;

	if ((ttyfd = open(DEVTTY, O_RDWR | O_CLOEXEC)) >= 0) {
		if ((ttyoutf = fdopen(ttyfd, "w")) != NULL) {
			if ((ttyinf = fdopen(ttyfd, "r")) != NULL)
				return(0);
			(void)fclose(ttyoutf);
		}
		(void)close(ttyfd);
	}

	if (iflag) {
		paxwarn(1, "Fatal error, cannot open %s", DEVTTY);
		return(-1);
	}
	return(0);
}

/*
 * tty_prnt()
 *	print a message using the specified format to the controlling tty
 *	if there is no controlling terminal, just return.
 */

void
tty_prnt(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	if (ttyoutf == NULL) {
		va_end(ap);
		return;
	}
	(void)vfprintf(ttyoutf, fmt, ap);
	va_end(ap);
	(void)fflush(ttyoutf);
}

/*
 * tty_read()
 *	read a string from the controlling terminal if it is open into the
 *	supplied buffer
 * Return:
 *	0 if data was read, -1 otherwise.
 */

int
tty_read(char *str, int len)
{
	if (ttyinf == NULL || fgets(str, len, ttyinf) == NULL)
		return(-1);

	/*
	 * strip off that trailing newline
	 */
	str[strcspn(str, "\n")] = '\0';
	return(0);
}

/*
 * paxwarn()
 *	write a warning message to stderr. if "set" the exit value of pax
 *	will be non-zero.
 */

void
paxwarn(int set, const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	if (set)
		exit_val = 1;
	/*
	 * when vflag we better ship out an extra \n to get this message on a
	 * line by itself
	 */
	if (vflag && vfpart) {
		(void)fflush(listf);
		(void)fputc('\n', stderr);
		vfpart = 0;
	}
	(void)fprintf(stderr, "%s: ", argv0);
	(void)vfprintf(stderr, fmt, ap);
	va_end(ap);
	(void)fputc('\n', stderr);
}

/*
 * syswarn()
 *	write a warning message to stderr. if "set" the exit value of pax
 *	will be non-zero.
 */

void
syswarn(int set, int errnum, const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	if (set)
		exit_val = 1;
	/*
	 * when vflag we better ship out an extra \n to get this message on a
	 * line by itself
	 */
	if (vflag && vfpart) {
		(void)fflush(listf);
		(void)fputc('\n', stderr);
		vfpart = 0;
	}
	(void)fprintf(stderr, "%s: ", argv0);
	(void)vfprintf(stderr, fmt, ap);
	va_end(ap);

	/*
	 * format and print the errno
	 */
	if (errnum > 0)
		(void)fprintf(stderr, ": %s", strerror(errnum));
	(void)fputc('\n', stderr);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: tty_subs.c,v 1.17 2016/08/26 04:22:13 guenther Exp $ */
2			/* $NetBSD: tty_subs.c,v 1.5 1995/03/21 09:07:52 cgd Exp $ */
3
4			/*-
5			* Copyright (c) 1992 Keith Muller.
6			* Copyright (c) 1992, 1993
7			* The Regents of the University of California. All rights reserved.
8			*
9			* This code is derived from software contributed to Berkeley by
10			* Keith Muller of the University of California, San Diego.
11			*
12			* Redistribution and use in source and binary forms, with or without
13			* modification, are permitted provided that the following conditions
14			* are met:
15			* 1. Redistributions of source code must retain the above copyright
16			* notice, this list of conditions and the following disclaimer.
17			* 2. Redistributions in binary form must reproduce the above copyright
18			* notice, this list of conditions and the following disclaimer in the
19			* documentation and/or other materials provided with the distribution.
20			* 3. Neither the name of the University nor the names of its contributors
21			* may be used to endorse or promote products derived from this software
22			* without specific prior written permission.
23			*
24			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34			* SUCH DAMAGE.
35			*/
36
37			#include <sys/types.h>
38			#include <sys/stat.h>
39			#include <fcntl.h>
40			#include <stdarg.h>
41			#include <stdio.h>
42			#include <string.h>
43			#include <unistd.h>
44
45			#include "pax.h"
46			#include "extern.h"
47
48			/*
49			* routines that deal with I/O to and from the user
50			*/
51
52			#define DEVTTY "/dev/tty" /* device for interactive i/o */
53			static FILE ttyoutf = NULL; / output pointing at control tty */
54			static FILE ttyinf = NULL; / input pointing at control tty */
55
56			/*
57			* tty_init()
58			* try to open the controlling terminal (if any) for this process. if the
59			* open fails, future ops that require user input will get an EOF
60			*/
61
62			int
63			tty_init(void)
64			{
65			int ttyfd;
66
67	✓✗	200	if ((ttyfd = open(DEVTTY, O_RDWR \| O_CLOEXEC)) >= 0) {
68	✓✗	100	if ((ttyoutf = fdopen(ttyfd, "w")) != NULL) {
69	✓✗	100	if ((ttyinf = fdopen(ttyfd, "r")) != NULL)
70		100	return(0);
71			(void)fclose(ttyoutf);
72			}
73			(void)close(ttyfd);
74			}
75
76			if (iflag) {
77			paxwarn(1, "Fatal error, cannot open %s", DEVTTY);
78			return(-1);
79			}
80			return(0);
81		100	}
82
83			/*
84			* tty_prnt()
85			* print a message using the specified format to the controlling tty
86			* if there is no controlling terminal, just return.
87			*/
88
89			void
90			tty_prnt(const char *fmt, ...)
91			{
92			va_list ap;
93
94			va_start(ap, fmt);
95			if (ttyoutf == NULL) {
96			va_end(ap);
97			return;
98			}
99			(void)vfprintf(ttyoutf, fmt, ap);
100			va_end(ap);
101			(void)fflush(ttyoutf);
102			}
103
104			/*
105			* tty_read()
106			* read a string from the controlling terminal if it is open into the
107			* supplied buffer
108			* Return:
109			* 0 if data was read, -1 otherwise.
110			*/
111
112			int
113			tty_read(char *str, int len)
114			{
115			if (ttyinf == NULL \|\| fgets(str, len, ttyinf) == NULL)
116			return(-1);
117
118			/*
119			* strip off that trailing newline
120			*/
121			str[strcspn(str, "\n")] = '\0';
122			return(0);
123			}
124
125			/*
126			* paxwarn()
127			* write a warning message to stderr. if "set" the exit value of pax
128			* will be non-zero.
129			*/
130
131			void
132			paxwarn(int set, const char *fmt, ...)
133			{
134		12	va_list ap;
135
136		6	va_start(ap, fmt);
137	✗✓	6	if (set)
138			exit_val = 1;
139			/*
140			* when vflag we better ship out an extra \n to get this message on a
141			* line by itself
142			*/
143	✗✓	6	if (vflag && vfpart) {
144			(void)fflush(listf);
145			(void)fputc('\n', stderr);
146			vfpart = 0;
147			}
148		6	(void)fprintf(stderr, "%s: ", argv0);
149		6	(void)vfprintf(stderr, fmt, ap);
150		6	va_end(ap);
151		6	(void)fputc('\n', stderr);
152		6	}
153
154			/*
155			* syswarn()
156			* write a warning message to stderr. if "set" the exit value of pax
157			* will be non-zero.
158			*/
159
160			void
161			syswarn(int set, int errnum, const char *fmt, ...)
162			{
163		12	va_list ap;
164
165		6	va_start(ap, fmt);
166	✓✗	6	if (set)
167		6	exit_val = 1;
168			/*
169			* when vflag we better ship out an extra \n to get this message on a
170			* line by itself
171			*/
172	✗✓	6	if (vflag && vfpart) {
173			(void)fflush(listf);
174			(void)fputc('\n', stderr);
175			vfpart = 0;
176			}
177		6	(void)fprintf(stderr, "%s: ", argv0);
178		6	(void)vfprintf(stderr, fmt, ap);
179		6	va_end(ap);
180
181			/*
182			* format and print the errno
183			*/
184	✓✗	6	if (errnum > 0)
185		6	(void)fprintf(stderr, ": %s", strerror(errnum));
186		6	(void)fputc('\n', stderr);
187		6	}