1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) tons of folks. Tracking down who wrote what
6 * isn't something I'm going to worry about... If you wrote something
7 * here, please feel free to acknowledge your work.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
24 * Permission has been granted to redistribute this code under the GPL.
33 /* This function parses the sort of string you might pass
34 * to chmod (i.e., [ugoa]{+|-|=}[rwxst] ) and returns the
35 * correct mode described by the string. */
36 extern int parse_mode(const char *s, mode_t * theMode)
38 static const mode_t group_set[] = {
39 S_ISUID | S_IRWXU, /* u */
40 S_ISGID | S_IRWXG, /* g */
42 S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO /* a */
45 static const mode_t mode_set[] = {
46 S_IRUSR | S_IRGRP | S_IROTH, /* r */
47 S_IWUSR | S_IWGRP | S_IWOTH, /* w */
48 S_IXUSR | S_IXGRP | S_IXOTH, /* x */
49 S_ISUID | S_ISGID, /* s */
53 static const char group_chars[] = "ugoa";
54 static const char mode_chars[] = "rwxst";
59 S_ISVTX | S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
74 if ((c = *s++) == '\0') {
77 for (p=group_chars ; *p ; p++) {
79 groups |= group_set[(int)(p-group_chars)];
88 if (groups == 0) { /* The default is "all" */
89 groups |= S_ISUID | S_ISGID | S_ISVTX
90 | S_IRWXU | S_IRWXG | S_IRWXO;
94 if ((c < '0') || (c > '7') || (mode | groups)) {
97 *theMode = strtol(--s, NULL, 8);
103 if (((c = *s++) != '\0') && (c != ',')) {
104 for (p=mode_chars ; *p ; p++) {
106 mode |= mode_set[(int)(p-mode_chars)];
110 break; /* We're done so break out of loop.*/
114 andMode &= ~(groups); /* Now fall through. */
116 orMode |= mode & groups;
119 andMode &= ~(mode & groups);
120 orMode &= ~(mode & groups);
134 c-file-style: "linux"