xref: /titanic_44/usr/src/lib/libcmd/common/rmdir.c (revision 967a0a51c3e8ee257644dcad360e72dd4cf555f8)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1992-2009 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                  Common Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                                                                      *
20 ***********************************************************************/
21 #pragma prototyped
22 /*
23  * Glenn Fowler
24  * AT&T Research
25  *
26  * rmdir
27  */
28 
29 static const char usage[] =
30 "[-?\n@(#)$Id: rmdir (AT&T Research) 2006-08-24 $\n]"
31 USAGE_LICENSE
32 "[+NAME?rmdir - remove empty directories]"
33 "[+DESCRIPTION?\brmdir\b deletes each given directory.  The directory "
34 	"must be empty; containing no entries other than \b.\b or \b..\b.  "
35 	"If a directory and a subdirectory of that directory are specified "
36 	"as operands, the subdirectory must be specified before the parent "
37 	"so that the parent directory will be empty when \brmdir\b attempts "
38 	"to remove it.]"
39 "[e:ignore-fail-on-non-empty?Ignore each non-empty directory failure.]"
40 "[p:parents?Remove each explicit \adirectory\a argument directory that "
41 	"becomes empty after its child directories are removed.]"
42 "[s:suppress?Suppress the message printed on the standard error when "
43 	"\b-p\b is in effect.]"
44 "\n"
45 "\ndirectory ...\n"
46 "\n"
47 "[+EXIT STATUS?]{"
48         "[+0?All directories deleted successfully.]"
49         "[+>0?One or more directories could not be deleted.]"
50 "}"
51 "[+SEE ALSO?\bmkdir\b(1), \brm\b(1), \brmdir\b(2), \bunlink\b(2)]"
52 ;
53 
54 #include <cmd.h>
55 
56 int
57 b_rmdir(int argc, char** argv, void* context)
58 {
59 	register char*	dir;
60 	register char*	end;
61 	register int	n;
62 	int		eflag = 0;
63 	int		pflag = 0;
64 	int		sflag = 0;
65 
66 	cmdinit(argc, argv, context, ERROR_CATALOG, 0);
67 	while (n = optget(argv, usage)) switch (n)
68 	{
69 	case 'e':
70 		eflag = 1;
71 		break;
72 	case 'p':
73 		pflag = 1;
74 		break;
75 	case 's':
76 		sflag = 1;
77 		break;
78 	case ':':
79 		error(2, "%s", opt_info.arg);
80 		break;
81 	case '?':
82 		error(ERROR_usage(2), "%s", opt_info.arg);
83 		break;
84 	}
85 	argv += opt_info.index;
86 	if (error_info.errors || !*argv)
87 		error(ERROR_usage(2), "%s", optusage(NiL));
88 	if (!pflag)
89 		sflag = 0;
90 	while (dir = *argv++)
91 	{
92 		end = dir;
93 		if (pflag) end += strlen(dir);
94 		n = 0;
95 		for (;;)
96 		{
97 			if (rmdir(dir) < 0)
98 			{
99 				if (!eflag || errno != EEXIST
100 #ifdef ENOTEMPTY
101 				    && errno != ENOTEMPTY
102 #endif
103 				    )
104 				{
105 					if (sflag)
106 						error_info.errors++;
107 					else
108 						error(ERROR_system(0), "%s: cannot remove", dir);
109 				}
110 				break;
111 			}
112 			if (n) *end = '/';
113 			else n = 1;
114 			do if (end <= dir) goto next; while (*--end != '/');
115 			do if (end <= dir) goto next; while (*(end - 1) == '/' && end--);
116 			*end = 0;
117 		}
118 	next:	;
119 	}
120 	return(error_info.errors != 0);
121 }
122 
123