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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	bin/pax/tty_subs.c	Lines:	26	50	52.0 %
Date:	2016-12-06	Branches:	8	28	28.6 %


/*	$OpenBSD: tty_subs.c,v 1.16 2014/11/23 05:28:12 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/time.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include "pax.h"
#include "extern.h"
#include <stdarg.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 1.16 2014/11/23 05:28:12 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/time.h>
39			#include <sys/stat.h>
40			#include <fcntl.h>
41			#include <stdio.h>
42			#include <errno.h>
43			#include <unistd.h>
44			#include <stdlib.h>
45			#include <string.h>
46			#include "pax.h"
47			#include "extern.h"
48			#include <stdarg.h>
49
50			/*
51			* routines that deal with I/O to and from the user
52			*/
53
54			#define DEVTTY "/dev/tty" /* device for interactive i/o */
55			static FILE ttyoutf = NULL; / output pointing at control tty */
56			static FILE ttyinf = NULL; / input pointing at control tty */
57
58			/*
59			* tty_init()
60			* try to open the controlling terminal (if any) for this process. if the
61			* open fails, future ops that require user input will get an EOF
62			*/
63
64			int
65			tty_init(void)
66		32	{
67			int ttyfd;
68
69	✓✗	32	if ((ttyfd = open(DEVTTY, O_RDWR \| O_CLOEXEC)) >= 0) {
70	✓✗	32	if ((ttyoutf = fdopen(ttyfd, "w")) != NULL) {
71	✓✗	32	if ((ttyinf = fdopen(ttyfd, "r")) != NULL)
72		32	return(0);
73			(void)fclose(ttyoutf);
74			}
75			(void)close(ttyfd);
76			}
77
78			if (iflag) {
79			paxwarn(1, "Fatal error, cannot open %s", DEVTTY);
80			return(-1);
81			}
82			return(0);
83			}
84
85			/*
86			* tty_prnt()
87			* print a message using the specified format to the controlling tty
88			* if there is no controlling terminal, just return.
89			*/
90
91			void
92			tty_prnt(const char *fmt, ...)
93			{
94			va_list ap;
95
96			va_start(ap, fmt);
97			if (ttyoutf == NULL) {
98			va_end(ap);
99			return;
100			}
101			(void)vfprintf(ttyoutf, fmt, ap);
102			va_end(ap);
103			(void)fflush(ttyoutf);
104			}
105
106			/*
107			* tty_read()
108			* read a string from the controlling terminal if it is open into the
109			* supplied buffer
110			* Return:
111			* 0 if data was read, -1 otherwise.
112			*/
113
114			int
115			tty_read(char *str, int len)
116			{
117			if (ttyinf == NULL \|\| fgets(str, len, ttyinf) == NULL)
118			return(-1);
119
120			/*
121			* strip off that trailing newline
122			*/
123			str[strcspn(str, "\n")] = '\0';
124			return(0);
125			}
126
127			/*
128			* paxwarn()
129			* write a warning message to stderr. if "set" the exit value of pax
130			* will be non-zero.
131			*/
132
133			void
134			paxwarn(int set, const char *fmt, ...)
135		2	{
136			va_list ap;
137
138		2	va_start(ap, fmt);
139	✗✓	2	if (set)
140			exit_val = 1;
141			/*
142			* when vflag we better ship out an extra \n to get this message on a
143			* line by itself
144			*/
145	✗✓✗✗	2	if (vflag && vfpart) {
146			(void)fflush(listf);
147			(void)fputc('\n', stderr);
148			vfpart = 0;
149			}
150		2	(void)fprintf(stderr, "%s: ", argv0);
151		2	(void)vfprintf(stderr, fmt, ap);
152		2	va_end(ap);
153		2	(void)fputc('\n', stderr);
154		2	}
155
156			/*
157			* syswarn()
158			* write a warning message to stderr. if "set" the exit value of pax
159			* will be non-zero.
160			*/
161
162			void
163			syswarn(int set, int errnum, const char *fmt, ...)
164		2	{
165			va_list ap;
166
167		2	va_start(ap, fmt);
168	✓✗	2	if (set)
169		2	exit_val = 1;
170			/*
171			* when vflag we better ship out an extra \n to get this message on a
172			* line by itself
173			*/
174	✗✓✗✗	2	if (vflag && vfpart) {
175			(void)fflush(listf);
176			(void)fputc('\n', stderr);
177			vfpart = 0;
178			}
179		2	(void)fprintf(stderr, "%s: ", argv0);
180		2	(void)vfprintf(stderr, fmt, ap);
181		2	va_end(ap);
182
183			/*
184			* format and print the errno
185			*/
186	✓✗	2	if (errnum > 0)
187		2	(void)fprintf(stderr, ": %s", strerror(errnum));
188		2	(void)fputc('\n', stderr);
189		2	}