2 * Copyright (c) 2008, 2009 Edward Tomasz NapieraĆa <trasz@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
36 #include "acl_support.h"
38 struct flagnames_struct {
44 struct flagnames_struct a_flags[] =
45 {{ ACL_ENTRY_FILE_INHERIT, "file_inherit", 'f'},
46 { ACL_ENTRY_DIRECTORY_INHERIT, "dir_inherit", 'd'},
47 { ACL_ENTRY_INHERIT_ONLY, "inherit_only", 'i'},
48 { ACL_ENTRY_NO_PROPAGATE_INHERIT, "no_propagate", 'n'},
49 { ACL_ENTRY_SUCCESSFUL_ACCESS, "successfull_access", 'S'},
50 { ACL_ENTRY_FAILED_ACCESS, "failed_access", 'F'},
51 { ACL_ENTRY_INHERITED, "inherited", 'I' },
53 * There is no ACE_IDENTIFIER_GROUP here - SunOS does not show it
54 * in the "flags" field. There is no ACE_OWNER, ACE_GROUP or
55 * ACE_EVERYONE either, for obvious reasons.
59 struct flagnames_struct a_access_masks[] =
60 {{ ACL_READ_DATA, "read_data", 'r'},
61 { ACL_WRITE_DATA, "write_data", 'w'},
62 { ACL_EXECUTE, "execute", 'x'},
63 { ACL_APPEND_DATA, "append_data", 'p'},
64 { ACL_DELETE_CHILD, "delete_child", 'D'},
65 { ACL_DELETE, "delete", 'd'},
66 { ACL_READ_ATTRIBUTES, "read_attributes", 'a'},
67 { ACL_WRITE_ATTRIBUTES, "write_attributes", 'A'},
68 { ACL_READ_NAMED_ATTRS, "read_xattr", 'R'},
69 { ACL_WRITE_NAMED_ATTRS, "write_xattr", 'W'},
70 { ACL_READ_ACL, "read_acl", 'c'},
71 { ACL_WRITE_ACL, "write_acl", 'C'},
72 { ACL_WRITE_OWNER, "write_owner", 'o'},
73 { ACL_SYNCHRONIZE, "synchronize", 's'},
74 { ACL_FULL_SET, "full_set", '\0'},
75 { ACL_MODIFY_SET, "modify_set", '\0'},
76 { ACL_READ_SET, "read_set", '\0'},
77 { ACL_WRITE_SET, "write_set", '\0'},
81 format_flag(uint32_t *var, const struct flagnames_struct *flags)
84 for (; flags->name != 0; flags++) {
85 if ((flags->flag & *var) == 0)
96 format_flags_verbose(char *str, size_t size, uint32_t var,
97 const struct flagnames_struct *flags)
102 while ((tmp = format_flag(&var, flags)) != NULL) {
103 off += snprintf(str + off, size - off, "%s/", tmp);
107 /* If there were any flags added... */
110 /* ... then remove the last slash. */
111 assert(str[off] == '/');
120 format_flags_compact(char *str, size_t size, uint32_t var,
121 const struct flagnames_struct *flags)
125 for (i = 0; flags[i].letter != '\0'; i++) {
127 if ((flags[i].flag & var) == 0)
130 str[i] = flags[i].letter;
139 parse_flags_verbose(const char *strp, uint32_t *var,
140 const struct flagnames_struct *flags, const char *flags_name,
143 int i, found, ever_found = 0;
150 while (str != NULL) {
151 flag = strsep(&str, "/:");
154 for (i = 0; flags[i].name != NULL; i++) {
155 if (strcmp(flags[i].name, flag) == 0) {
156 *var |= flags[i].flag;
164 warnx("malformed ACL: \"%s\" field contains "
165 "invalid flag \"%s\"", flags_name, flag);
178 parse_flags_compact(const char *str, uint32_t *var,
179 const struct flagnames_struct *flags, const char *flags_name)
189 /* Ignore minus signs. */
195 for (j = 0; flags[j].name != NULL; j++) {
196 if (flags[j].letter == str[i]) {
197 *var |= flags[j].flag;
204 warnx("malformed ACL: \"%s\" field contains "
205 "invalid flag \"%c\"", flags_name, str[i]);
212 _nfs4_format_flags(char *str, size_t size, acl_flag_t var, int verbose)
216 return (format_flags_verbose(str, size, var, a_flags));
218 return (format_flags_compact(str, size, var, a_flags));
222 _nfs4_format_access_mask(char *str, size_t size, acl_perm_t var, int verbose)
226 return (format_flags_verbose(str, size, var, a_access_masks));
228 return (format_flags_compact(str, size, var, a_access_masks));
232 _nfs4_parse_flags(const char *str, acl_flag_t *flags)
234 int error, try_compact;
237 error = parse_flags_verbose(str, &tmpflags, a_flags, "flags", &try_compact);
238 if (error && try_compact)
239 error = parse_flags_compact(str, &tmpflags, a_flags, "flags");
247 _nfs4_parse_access_mask(const char *str, acl_perm_t *perms)
249 int error, try_compact;
252 error = parse_flags_verbose(str, &tmpperms, a_access_masks,
253 "access permissions", &try_compact);
254 if (error && try_compact)
255 error = parse_flags_compact(str, &tmpperms,
256 a_access_masks, "access permissions");