rmdir.c revision 1.19 
1/* $NetBSD: rmdir.c,v 1.19 2003/08/07 09:05:29 agc Exp $ */
2
3/*-
4 * Copyright (c) 1992, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\
35	The Regents of the University of California.  All rights reserved.\n");
36#endif /* not lint */
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)rmdir.c	8.3 (Berkeley) 4/2/94";
41#else
42__RCSID("$NetBSD: rmdir.c,v 1.19 2003/08/07 09:05:29 agc Exp $");
43#endif
44#endif /* not lint */
45
46#include <sys/param.h>
47
48#include <err.h>
49#include <errno.h>
50#include <locale.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <unistd.h>
55#include <vis.h>
56
57int	stdout_ok;			/* stdout connected to a terminal */
58
59int	rm_path(char *);
60void	usage(void);
61int	main(int, char *[]);
62char	*printescaped(const char *);
63
64int
65main(int argc, char *argv[])
66{
67	int ch, errors, pflag;
68
69	setprogname(argv[0]);
70	(void)setlocale(LC_ALL, "");
71
72	pflag = 0;
73	while ((ch = getopt(argc, argv, "p")) != -1)
74		switch(ch) {
75		case 'p':
76			pflag = 1;
77			break;
78		case '?':
79		default:
80			usage();
81		}
82	argc -= optind;
83	argv += optind;
84
85	if (argc == 0)
86		usage();
87
88	stdout_ok = isatty(STDIN_FILENO);
89
90	for (errors = 0; *argv; argv++) {
91		char *p;
92
93		/* Delete trailing slashes, per POSIX. */
94		p = *argv + strlen(*argv);
95		while (--p > *argv && *p == '/')
96			;
97		*++p = '\0';
98
99		if (rmdir(*argv) < 0) {
100			char *dn;
101			dn = printescaped(*argv);
102			warn("%s", dn);
103			free(dn);
104			errors = 1;
105		} else if (pflag)
106			errors |= rm_path(*argv);
107	}
108
109	exit(errors);
110	/* NOTREACHED */
111}
112
113int
114rm_path(char *path)
115{
116	char *p;
117
118	while ((p = strrchr(path, '/')) != NULL) {
119		/* Delete trailing slashes. */
120		while (--p > path && *p == '/')
121			;
122		*++p = '\0';
123
124		if (rmdir(path) < 0) {
125			char *pn;
126			pn = printescaped(path);
127			warn("%s", pn);
128			free(pn);
129			return (1);
130		}
131	}
132
133	return (0);
134}
135
136void
137usage(void)
138{
139	(void)fprintf(stderr, "usage: %s [-p] directory ...\n", getprogname());
140	exit(1);
141	/* NOTREACHED */
142}
143
144char *
145printescaped(const char *src)
146{
147	size_t len;
148	char *retval;
149
150	len = strlen(src);
151	if (len != 0 && SIZE_T_MAX/len <= 4) {
152		errx(EXIT_FAILURE, "%s: name too long", src);
153		/* NOTREACHED */
154	}
155
156	retval = (char *)malloc(4*len+1);
157	if (retval != NULL) {
158		if (stdout_ok)
159			(void)strvis(retval, src, VIS_NL | VIS_CSTYLE);
160		else
161			(void)strcpy(retval, src);
162		return retval;
163	} else
164		errx(EXIT_FAILURE, "out of memory!");
165		/* NOTREACHED */
166}
167