xref: /openbsd-src/lib/libc/string/strmode.c (revision bc8a30fccf976a62190688a60cf440be3b3cb43e)
1 /*	$OpenBSD: strmode.c,v 1.9 2024/06/23 07:08:26 otto Exp $ */
2 /*-
3  * Copyright (c) 1990 The Regents of the University of California.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the University nor the names of its contributors
15  *    may be used to endorse or promote products derived from this software
16  *    without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30 
31 #include <sys/types.h>
32 #include <sys/stat.h>
33 #include <string.h>
34 
35 void
strmode(mode_t mode,char * p)36 strmode(mode_t mode, char *p)
37 {
38 	 /* print type */
39 	switch (mode & S_IFMT) {
40 	case S_IFDIR:			/* directory */
41 		*p++ = 'd';
42 		break;
43 	case S_IFCHR:			/* character special */
44 		*p++ = 'c';
45 		break;
46 	case S_IFBLK:			/* block special */
47 		*p++ = 'b';
48 		break;
49 	case S_IFREG:			/* regular */
50 		*p++ = '-';
51 		break;
52 	case S_IFLNK:			/* symbolic link */
53 		*p++ = 'l';
54 		break;
55 	case S_IFSOCK:			/* socket */
56 		*p++ = 's';
57 		break;
58 #ifdef S_IFIFO
59 	case S_IFIFO:			/* fifo */
60 		*p++ = 'p';
61 		break;
62 #endif
63 	default:			/* unknown */
64 		*p++ = '?';
65 		break;
66 	}
67 	/* usr */
68 	if (mode & S_IRUSR)
69 		*p++ = 'r';
70 	else
71 		*p++ = '-';
72 	if (mode & S_IWUSR)
73 		*p++ = 'w';
74 	else
75 		*p++ = '-';
76 	switch (mode & (S_IXUSR | S_ISUID)) {
77 	case 0:
78 		*p++ = '-';
79 		break;
80 	case S_IXUSR:
81 		*p++ = 'x';
82 		break;
83 	case S_ISUID:
84 		*p++ = 'S';
85 		break;
86 	case S_IXUSR | S_ISUID:
87 		*p++ = 's';
88 		break;
89 	}
90 	/* group */
91 	if (mode & S_IRGRP)
92 		*p++ = 'r';
93 	else
94 		*p++ = '-';
95 	if (mode & S_IWGRP)
96 		*p++ = 'w';
97 	else
98 		*p++ = '-';
99 	switch (mode & (S_IXGRP | S_ISGID)) {
100 	case 0:
101 		*p++ = '-';
102 		break;
103 	case S_IXGRP:
104 		*p++ = 'x';
105 		break;
106 	case S_ISGID:
107 		*p++ = 'S';
108 		break;
109 	case S_IXGRP | S_ISGID:
110 		*p++ = 's';
111 		break;
112 	}
113 	/* other */
114 	if (mode & S_IROTH)
115 		*p++ = 'r';
116 	else
117 		*p++ = '-';
118 	if (mode & S_IWOTH)
119 		*p++ = 'w';
120 	else
121 		*p++ = '-';
122 	switch (mode & (S_IXOTH | S_ISVTX)) {
123 	case 0:
124 		*p++ = '-';
125 		break;
126 	case S_IXOTH:
127 		*p++ = 'x';
128 		break;
129 	case S_ISVTX:
130 		*p++ = 'T';
131 		break;
132 	case S_IXOTH | S_ISVTX:
133 		*p++ = 't';
134 		break;
135 	}
136 	*p++ = ' ';		/* will be a '+' if ACL's implemented */
137 	*p = '\0';
138 }
139 DEF_WEAK(strmode);
140