xref: /illumos-gate/usr/src/contrib/ast/src/lib/libcmd/rmdir.c (revision b30d193948be5a7794d7ae3ba0ed9c2f72c88e0f)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1992-2012 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
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
b_rmdir(int argc,char ** argv,Shbltin_t * context)57 b_rmdir(int argc, char** argv, Shbltin_t* 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 	for (;;)
68 	{
69 		switch (optget(argv, usage))
70 		{
71 		case 'e':
72 			eflag = 1;
73 			continue;
74 		case 'p':
75 			pflag = 1;
76 			continue;
77 		case 's':
78 			sflag = 1;
79 			continue;
80 		case ':':
81 			error(2, "%s", opt_info.arg);
82 			break;
83 		case '?':
84 			error(ERROR_usage(2), "%s", opt_info.arg);
85 			break;
86 		}
87 		break;
88 	}
89 	argv += opt_info.index;
90 	if (error_info.errors || !*argv)
91 		error(ERROR_usage(2), "%s", optusage(NiL));
92 	if (!pflag)
93 		sflag = 0;
94 	while (dir = *argv++)
95 	{
96 		end = dir;
97 		if (pflag) end += strlen(dir);
98 		n = 0;
99 		for (;;)
100 		{
101 			if (rmdir(dir) < 0)
102 			{
103 				if (!eflag || errno != EEXIST
104 #ifdef ENOTEMPTY
105 				    && errno != ENOTEMPTY
106 #endif
107 				    )
108 				{
109 					if (sflag)
110 						error_info.errors++;
111 					else
112 						error(ERROR_system(0), "%s: cannot remove", dir);
113 				}
114 				break;
115 			}
116 			if (n) *end = '/';
117 			else n = 1;
118 			do if (end <= dir) goto next; while (*--end != '/');
119 			do if (end <= dir) goto next; while (*(end - 1) == '/' && end--);
120 			*end = 0;
121 		}
122 	next:	;
123 	}
124 	return(error_info.errors != 0);
125 }
126 
127