include/sys/acl.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  23  *
  24  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  25  * Use is subject to license terms.
  26  *
  27  * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
  28  */
  29
  30 #ifndef _SYS_ACL_H
  31 #define _SYS_ACL_H
  32
  33 #include <sys/types.h>
  34 #include <sys/acl_impl.h>
  35
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 #define MAX_ACL_ENTRIES         (1024)  /* max entries of each type */
  41 typedef struct acl {
  42         int             a_type;         /* the type of ACL entry */
  43         uid_t           a_id;           /* the entry in -uid or gid */
  44         o_mode_t        a_perm;         /* the permission field */
  45 } aclent_t;
  46
  47 typedef struct ace {
  48         uid_t           a_who;          /* uid or gid */
  49         uint32_t        a_access_mask;  /* read,write,... */
  50         uint16_t        a_flags;        /* see below */
  51         uint16_t        a_type;         /* allow or deny */
  52 } ace_t;
  53
  54 typedef struct acl_info acl_t;
  55
  56 /*
  57  * The following are Defined types for an aclent_t.
  58  */
  59 #define USER_OBJ        (0x01)          /* object owner */
  60 #define USER            (0x02)          /* additional users */
  61 #define GROUP_OBJ       (0x04)          /* owning group of the object */
  62 #define GROUP           (0x08)          /* additional groups */
  63 #define CLASS_OBJ       (0x10)          /* file group class and mask entry */
  64 #define OTHER_OBJ       (0x20)          /* other entry for the object */
  65 #define ACL_DEFAULT     (0x1000)        /* default flag */
  66 /* default object owner */
  67 #define DEF_USER_OBJ    (ACL_DEFAULT | USER_OBJ)
  68 /* default additional users */
  69 #define DEF_USER        (ACL_DEFAULT | USER)
  70 /* default owning group */
  71 #define DEF_GROUP_OBJ   (ACL_DEFAULT | GROUP_OBJ)
  72 /* default additional groups */
  73 #define DEF_GROUP       (ACL_DEFAULT | GROUP)
  74 /* default mask entry */
  75 #define DEF_CLASS_OBJ   (ACL_DEFAULT | CLASS_OBJ)
  76 /* default other entry */
  77 #define DEF_OTHER_OBJ   (ACL_DEFAULT | OTHER_OBJ)
  78
  79 /*
  80  * The following are defined for ace_t.
  81  *
  82  * Note, these are intentionally the same as the Windows
  83  * "File Access Rights Constants" you can find on MSDN.
  84  * (See also: "Standard Access Rights" on MSDN).
  85  *
  86  * The equivalent Windows names for these are just like
  87  * those show below, with FILE_ in place of ACE_, except
  88  * as noted below.  Also note that Windows uses a special
  89  * privilege: BYPASS_TRAVERSE_CHECKING, normally granted
  90  * to everyone, that causes the absence of ACE_TRAVERSE
  91  * to be ignored.
  92  */
  93 #define ACE_READ_DATA           0x00000001      /* file: read data */
  94 #define ACE_LIST_DIRECTORY      0x00000001      /* dir: list files */
  95 #define ACE_WRITE_DATA          0x00000002      /* file: write data */
  96 #define ACE_ADD_FILE            0x00000002      /* dir: create file */
  97 #define ACE_APPEND_DATA         0x00000004      /* file: append data */
  98 #define ACE_ADD_SUBDIRECTORY    0x00000004      /* dir: create subdir */
  99 #define ACE_READ_NAMED_ATTRS    0x00000008      /* FILE_READ_EA */
 100 #define ACE_WRITE_NAMED_ATTRS   0x00000010      /* FILE_WRITE_EA */
 101 #define ACE_EXECUTE             0x00000020      /* file: execute */
 102 #define ACE_TRAVERSE            0x00000020      /* dir: lookup name */
 103 #define ACE_DELETE_CHILD        0x00000040      /* dir: unlink child */
 104 #define ACE_READ_ATTRIBUTES     0x00000080      /* (all) stat, etc. */
 105 #define ACE_WRITE_ATTRIBUTES    0x00000100      /* (all) utimes, etc. */
 106 #define ACE_DELETE              0x00010000      /* (all) unlink self */
 107 #define ACE_READ_ACL            0x00020000      /* (all) getsecattr */
 108 #define ACE_WRITE_ACL           0x00040000      /* (all) setsecattr */
 109 #define ACE_WRITE_OWNER         0x00080000      /* (all) chown */
 110 #define ACE_SYNCHRONIZE         0x00100000      /* (all) see MSDN */
 111
 112 /*
 113  * Some of the following are the same as Windows uses. (but NOT ALL!)
 114  * See the "ACE_HEADER" structure description on MSDN for details.
 115  * Comments show relations to the MSDN names.
 116  */
 117 #define ACE_FILE_INHERIT_ACE            0x0001  /* = OBJECT_INHERIT_ACE */
 118 #define ACE_DIRECTORY_INHERIT_ACE       0x0002  /* = CONTAINER_INHERIT_ACE */
 119 #define ACE_NO_PROPAGATE_INHERIT_ACE    0x0004  /* = NO_PROPAGATE_INHERIT_ACE */
 120 #define ACE_INHERIT_ONLY_ACE            0x0008  /* = INHERIT_ONLY_ACE */
 121 #define ACE_SUCCESSFUL_ACCESS_ACE_FLAG  0x0010
 122 #define ACE_FAILED_ACCESS_ACE_FLAG      0x0020
 123 #define ACE_IDENTIFIER_GROUP            0x0040
 124 #define ACE_INHERITED_ACE               0x0080  /* INHERITED_ACE, 0x10 on NT */
 125 #define ACE_OWNER                       0x1000
 126 #define ACE_GROUP                       0x2000
 127 #define ACE_EVERYONE                    0x4000
 128
 129 /* These four are the same as Windows, but with an ACE_ prefix added. */
 130 #define ACE_ACCESS_ALLOWED_ACE_TYPE     0x0000
 131 #define ACE_ACCESS_DENIED_ACE_TYPE      0x0001
 132 #define ACE_SYSTEM_AUDIT_ACE_TYPE       0x0002
 133 #define ACE_SYSTEM_ALARM_ACE_TYPE       0x0003
 134
 135 #define ACL_AUTO_INHERIT                0x0001
 136 #define ACL_PROTECTED                   0x0002
 137 #define ACL_DEFAULTED                   0x0004
 138 #define ACL_FLAGS_ALL                   (ACL_AUTO_INHERIT|ACL_PROTECTED| \
 139     ACL_DEFAULTED)
 140
 141 /*
 142  * These are only applicable in a CIFS context.
 143  * Here again, same as Windows, but with an ACE_ prefix added.
 144  */
 145 #define ACE_ACCESS_ALLOWED_COMPOUND_ACE_TYPE            0x04
 146 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE              0x05
 147 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE               0x06
 148 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE                0x07
 149 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE                0x08
 150 #define ACE_ACCESS_ALLOWED_CALLBACK_ACE_TYPE            0x09
 151 #define ACE_ACCESS_DENIED_CALLBACK_ACE_TYPE             0x0A
 152 #define ACE_ACCESS_ALLOWED_CALLBACK_OBJECT_ACE_TYPE     0x0B
 153 #define ACE_ACCESS_DENIED_CALLBACK_OBJECT_ACE_TYPE      0x0C
 154 #define ACE_SYSTEM_AUDIT_CALLBACK_ACE_TYPE              0x0D
 155 #define ACE_SYSTEM_ALARM_CALLBACK_ACE_TYPE              0x0E
 156 #define ACE_SYSTEM_AUDIT_CALLBACK_OBJECT_ACE_TYPE       0x0F
 157 #define ACE_SYSTEM_ALARM_CALLBACK_OBJECT_ACE_TYPE       0x10
 158
 159 #define ACE_ALL_TYPES   0x001F
 160
 161 #ifdef _KERNEL
 162
 163 typedef struct ace_object {
 164         uid_t           a_who;          /* uid or gid */
 165         uint32_t        a_access_mask;  /* read,write,... */
 166         uint16_t        a_flags;        /* see below */
 167         uint16_t        a_type;         /* allow or deny */
 168         uint8_t         a_obj_type[16]; /* obj type */
 169         uint8_t         a_inherit_obj_type[16];  /* inherit obj */
 170 } ace_object_t;
 171
 172 #endif
 173
 174 #define ACE_ALL_PERMS   (ACE_READ_DATA|ACE_LIST_DIRECTORY|ACE_WRITE_DATA| \
 175     ACE_ADD_FILE|ACE_APPEND_DATA|ACE_ADD_SUBDIRECTORY|ACE_READ_NAMED_ATTRS| \
 176     ACE_WRITE_NAMED_ATTRS|ACE_EXECUTE|ACE_DELETE_CHILD|ACE_READ_ATTRIBUTES| \
 177     ACE_WRITE_ATTRIBUTES|ACE_DELETE|ACE_READ_ACL|ACE_WRITE_ACL| \
 178     ACE_WRITE_OWNER|ACE_SYNCHRONIZE)
 179
 180 #define ACE_ALL_WRITE_PERMS (ACE_WRITE_DATA|ACE_APPEND_DATA| \
 181     ACE_WRITE_ATTRIBUTES|ACE_WRITE_NAMED_ATTRS|ACE_WRITE_ACL| \
 182     ACE_WRITE_OWNER|ACE_DELETE|ACE_DELETE_CHILD)
 183
 184 #define ACE_READ_PERMS  (ACE_READ_DATA|ACE_READ_ACL|ACE_READ_ATTRIBUTES| \
 185     ACE_READ_NAMED_ATTRS)
 186
 187 #define ACE_WRITE_PERMS (ACE_WRITE_DATA|ACE_APPEND_DATA|ACE_WRITE_ATTRIBUTES| \
 188     ACE_WRITE_NAMED_ATTRS)
 189
 190 #define ACE_MODIFY_PERMS (ACE_READ_DATA|ACE_LIST_DIRECTORY|ACE_WRITE_DATA| \
 191     ACE_ADD_FILE|ACE_APPEND_DATA|ACE_ADD_SUBDIRECTORY|ACE_READ_NAMED_ATTRS| \
 192     ACE_WRITE_NAMED_ATTRS|ACE_EXECUTE|ACE_DELETE_CHILD|ACE_READ_ATTRIBUTES| \
 193     ACE_WRITE_ATTRIBUTES|ACE_DELETE|ACE_READ_ACL|ACE_SYNCHRONIZE)
 194 /*
 195  * The following flags are supported by both NFSv4 ACLs and ace_t.
 196  */
 197 #define ACE_NFSV4_SUP_FLAGS (ACE_FILE_INHERIT_ACE | \
 198     ACE_DIRECTORY_INHERIT_ACE | \
 199     ACE_NO_PROPAGATE_INHERIT_ACE | \
 200     ACE_INHERIT_ONLY_ACE | \
 201     ACE_IDENTIFIER_GROUP)
 202
 203 #define ACE_TYPE_FLAGS          (ACE_OWNER|ACE_GROUP|ACE_EVERYONE| \
 204     ACE_IDENTIFIER_GROUP)
 205 #define ACE_INHERIT_FLAGS       (ACE_FILE_INHERIT_ACE| \
 206     ACE_DIRECTORY_INHERIT_ACE|ACE_NO_PROPAGATE_INHERIT_ACE|ACE_INHERIT_ONLY_ACE)
 207
 208 /* cmd args to acl(2) for aclent_t  */
 209 #define GETACL                  1
 210 #define SETACL                  2
 211 #define GETACLCNT               3
 212
 213 /* cmd's to manipulate ace acls. */
 214 #define ACE_GETACL              4
 215 #define ACE_SETACL              5
 216 #define ACE_GETACLCNT           6
 217
 218 /* minimal acl entries from GETACLCNT */
 219 #define MIN_ACL_ENTRIES         4
 220
 221 #if !defined(_KERNEL)
 222
 223 /* acl check errors */
 224 #define GRP_ERROR               1
 225 #define USER_ERROR              2
 226 #define OTHER_ERROR             3
 227 #define CLASS_ERROR             4
 228 #define DUPLICATE_ERROR         5
 229 #define MISS_ERROR              6
 230 #define MEM_ERROR               7
 231 #define ENTRY_ERROR             8
 232
 233
 234 /*
 235  * similar to ufs_acl.h: changed to char type for user commands (tar, cpio)
 236  * Attribute types
 237  */
 238 #define UFSD_FREE       ('0')   /* Free entry */
 239 #define UFSD_ACL        ('1')   /* Access Control Lists */
 240 #define UFSD_DFACL      ('2')   /* reserved for future use */
 241 #define ACE_ACL         ('3')   /* ace_t style acls */
 242
 243 /*
 244  * flag to [f]acl_get()
 245  * controls whether a trivial acl should be returned.
 246  */
 247 #define ACL_NO_TRIVIAL  0x2
 248
 249
 250 /*
 251  * Flags to control acl_totext()
 252  */
 253
 254 #define ACL_APPEND_ID   0x1     /* append uid/gid to user/group entries */
 255 #define ACL_COMPACT_FMT 0x2     /* build ACL in ls -V format */
 256 #define ACL_NORESOLVE   0x4     /* don't do name service lookups */
 257 #define ACL_SID_FMT     0x8     /* use usersid/groupsid when appropriate */
 258
 259 /*
 260  * Legacy aclcheck errors for aclent_t ACLs
 261  */
 262 #define EACL_GRP_ERROR          GRP_ERROR
 263 #define EACL_USER_ERROR         USER_ERROR
 264 #define EACL_OTHER_ERROR        OTHER_ERROR
 265 #define EACL_CLASS_ERROR        CLASS_ERROR
 266 #define EACL_DUPLICATE_ERROR    DUPLICATE_ERROR
 267 #define EACL_MISS_ERROR         MISS_ERROR
 268 #define EACL_MEM_ERROR          MEM_ERROR
 269 #define EACL_ENTRY_ERROR        ENTRY_ERROR
 270
 271 #define EACL_INHERIT_ERROR      9               /* invalid inherit flags */
 272 #define EACL_FLAGS_ERROR        10              /* unknown flag value */
 273 #define EACL_PERM_MASK_ERROR    11              /* unknown permission */
 274 #define EACL_COUNT_ERROR        12              /* invalid acl count */
 275
 276 #define EACL_INVALID_SLOT       13              /* invalid acl slot */
 277 #define EACL_NO_ACL_ENTRY       14              /* Entry doesn't exist */
 278 #define EACL_DIFF_TYPE          15              /* acls aren't same type */
 279
 280 #define EACL_INVALID_USER_GROUP 16              /* need user/group name */
 281 #define EACL_INVALID_STR        17              /* invalid acl string */
 282 #define EACL_FIELD_NOT_BLANK    18              /* can't have blank field */
 283 #define EACL_INVALID_ACCESS_TYPE 19             /* invalid access type */
 284 #define EACL_UNKNOWN_DATA       20              /* Unrecognized data in ACL */
 285 #define EACL_MISSING_FIELDS     21              /* missing fields in acl */
 286
 287 #define EACL_INHERIT_NOTDIR     22              /* Need dir for inheritance */
 288
 289 extern int aclcheck(aclent_t *, int, int *);
 290 extern int acltomode(aclent_t *, int, mode_t *);
 291 extern int aclfrommode(aclent_t *, int, mode_t *);
 292 extern int aclsort(int, int, aclent_t *);
 293 extern char *acltotext(aclent_t *, int);
 294 extern aclent_t *aclfromtext(char *, int *);
 295 extern void acl_free(acl_t *);
 296 extern int acl_get(const char *, int, acl_t **);
 297 extern int facl_get(int, int, acl_t **);
 298 extern int acl_set(const char *, acl_t *acl);
 299 extern int facl_set(int, acl_t *acl);
 300 extern int acl_strip(const char *, uid_t, gid_t, mode_t);
 301 extern int acl_trivial(const char *);
 302 extern char *acl_totext(acl_t *, int);
 303 extern int acl_fromtext(const char *, acl_t **);
 304 extern int acl_check(acl_t *, int);
 305
 306 #else   /* !defined(_KERNEL) */
 307
 308 extern void ksort(caddr_t, int, int, int (*)(void *, void *));
 309 extern int cmp2acls(void *, void *);
 310
 311 #endif  /* !defined(_KERNEL) */
 312
 313 extern int acl(const char *path, int cmd, int cnt, void *buf);
 314 extern int facl(int fd, int cmd, int cnt, void *buf);
 315
 316 #ifdef  __cplusplus
 317 }
 318 #endif
 319
 320 #endif /* _SYS_ACL_H */