bsd/sys/attr.h

   1 /*
   2  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 /*
  30  * attr.h - attribute data structures and interfaces
  31  *
  32  * Copyright (c) 1998, Apple Computer, Inc.  All Rights Reserved.
  33  */
  34
  35 #ifndef _SYS_ATTR_H_
  36 #define _SYS_ATTR_H_
  37
  38 #include <sys/appleapiopts.h>
  39
  40 #ifdef __APPLE_API_UNSTABLE
  41 #include <sys/types.h>
  42 #include <sys/ucred.h>
  43 #include <sys/time.h>
  44 #include <sys/cdefs.h>
  45
  46 #define FSOPT_NOFOLLOW          0x00000001
  47 #define FSOPT_NOINMEMUPDATE     0x00000002
  48 #define FSOPT_REPORT_FULLSIZE   0x00000004
  49
  50 /* we currently aren't anywhere near this amount for a valid
  51  * fssearchblock.sizeofsearchparams1 or fssearchblock.sizeofsearchparams2
  52  * but we put a sanity check in to avoid abuse of the value passed in from
  53  * user land.
  54  */
  55 #define SEARCHFS_MAX_SEARCHPARMS  4096
  56
  57 typedef u_int32_t text_encoding_t;
  58
  59 typedef u_int32_t fsobj_type_t;
  60
  61 typedef u_int32_t fsobj_tag_t;
  62
  63 typedef u_int32_t fsfile_type_t;
  64
  65 typedef u_int32_t fsvolid_t;
  66
  67 typedef struct fsobj_id {
  68         u_int32_t               fid_objno;
  69         u_int32_t               fid_generation;
  70 } fsobj_id_t;
  71
  72 typedef u_int32_t attrgroup_t;
  73
  74 struct attrlist {
  75         u_short bitmapcount;                    /* number of attr. bit sets in list (should be 5) */
  76         u_int16_t reserved;                             /* (to maintain 4-byte alignment) */
  77         attrgroup_t commonattr;                 /* common attribute group */
  78         attrgroup_t volattr;                    /* Volume attribute group */
  79         attrgroup_t dirattr;                    /* directory attribute group */
  80         attrgroup_t fileattr;                   /* file attribute group */
  81         attrgroup_t forkattr;                   /* fork attribute group */
  82 };
  83 #define ATTR_BIT_MAP_COUNT 5
  84
  85 typedef struct attribute_set {
  86         attrgroup_t commonattr;                 /* common attribute group */
  87         attrgroup_t volattr;                    /* Volume attribute group */
  88         attrgroup_t dirattr;                    /* directory attribute group */
  89         attrgroup_t fileattr;                   /* file attribute group */
  90         attrgroup_t forkattr;                   /* fork attribute group */
  91 } attribute_set_t;
  92
  93 typedef struct attrreference {
  94         int32_t     attr_dataoffset;
  95         u_int32_t   attr_length;
  96 } attrreference_t;
  97
  98 /* XXX PPD This is derived from HFSVolumePriv.h and should perhaps be referenced from there? */
  99
 100 struct diskextent {
 101         u_int32_t                                       startblock;                             /* first block allocated */
 102         u_int32_t                                       blockcount;                             /* number of blocks allocated */
 103 };
 104
 105 typedef struct diskextent extentrecord[8];
 106
 107 typedef u_int32_t vol_capabilities_set_t[4];
 108
 109 #define VOL_CAPABILITIES_FORMAT 0
 110 #define VOL_CAPABILITIES_INTERFACES 1
 111 #define VOL_CAPABILITIES_RESERVED1 2
 112 #define VOL_CAPABILITIES_RESERVED2 3
 113
 114 typedef struct vol_capabilities_attr {
 115         vol_capabilities_set_t capabilities;
 116         vol_capabilities_set_t valid;
 117 } vol_capabilities_attr_t;
 118
 119 /*
 120  * XXX this value needs to be raised - 3893388
 121  */
 122 #define ATTR_MAX_BUFFER         8192
 123
 124 /*
 125  * VOL_CAP_FMT_PERSISTENTOBJECTIDS: When set, the volume has object IDs
 126  * that are persistent (retain their values even when the volume is
 127  * unmounted and remounted), and a file or directory can be looked up
 128  * by ID.  Volumes that support VolFS and can support Carbon File ID
 129  * references should set this bit.
 130  *
 131  * VOL_CAP_FMT_SYMBOLICLINKS: When set, the volume supports symbolic
 132  * links.  The symlink(), readlink(), and lstat() calls all use this
 133  * symbolic link.
 134  *
 135  * VOL_CAP_FMT_HARDLINKS: When set, the volume supports hard links.
 136  * The link() call creates hard links.
 137  *
 138  * VOL_CAP_FMT_JOURNAL: When set, the volume is capable of supporting
 139  * a journal used to speed recovery in case of unplanned shutdown
 140  * (such as a power outage or crash).  This bit does not necessarily
 141  * mean the volume is actively using a journal for recovery.
 142  *
 143  * VOL_CAP_FMT_JOURNAL_ACTIVE: When set, the volume is currently using
 144  * a journal for use in speeding recovery after an unplanned shutdown.
 145  * This bit can be set only if VOL_CAP_FMT_JOURNAL is also set.
 146  *
 147  * VOL_CAP_FMT_NO_ROOT_TIMES: When set, the volume format does not
 148  * store reliable times for the root directory, so you should not
 149  * depend on them to detect changes, etc.
 150  *
 151  * VOL_CAP_FMT_SPARSE_FILES: When set, the volume supports sparse files.
 152  * That is, files which can have "holes" that have never been written
 153  * to, and are not allocated on disk.  Sparse files may have an
 154  * allocated size that is less than the file's logical length.
 155  *
 156  * VOL_CAP_FMT_ZERO_RUNS: For security reasons, parts of a file (runs)
 157  * that have never been written to must appear to contain zeroes.  When
 158  * this bit is set, the volume keeps track of allocated but unwritten
 159  * runs of a file so that it can substitute zeroes without actually
 160  * writing zeroes to the media.  This provides performance similar to
 161  * sparse files, but not the space savings.
 162  *
 163  * VOL_CAP_FMT_CASE_SENSITIVE: When set, file and directory names are
 164  * case sensitive (upper and lower case are different).  When clear,
 165  * an upper case character is equivalent to a lower case character,
 166  * and you can't have two names that differ solely in the case of
 167  * the characters.
 168  *
 169  * VOL_CAP_FMT_CASE_PRESERVING: When set, file and directory names
 170  * preserve the difference between upper and lower case.  If clear,
 171  * the volume may change the case of some characters (typically
 172  * making them all upper or all lower case).  A volume that sets
 173  * VOL_CAP_FMT_CASE_SENSITIVE should also set VOL_CAP_FMT_CASE_PRESERVING.
 174  *
 175  * VOL_CAP_FMT_FAST_STATFS: This bit is used as a hint to upper layers
 176  * (especially Carbon) that statfs() is fast enough that its results
 177  * need not be cached by those upper layers.  A volume that caches
 178  * the statfs information in its in-memory structures should set this bit.
 179  * A volume that must always read from disk or always perform a network
 180  * transaction should not set this bit.
 181  *
 182  * VOL_CAP_FMT_2TB_FILESIZE: When set, the volume format supports file
 183  * size upto 2TB.  This bit does not necessarily mean that the file
 184  * system does not support file size more than 2TB.   This bit does
 185  * not mean that the currently available space on the volume is 2TB.
 186  */
 187 #define VOL_CAP_FMT_PERSISTENTOBJECTIDS         0x00000001
 188 #define VOL_CAP_FMT_SYMBOLICLINKS               0x00000002
 189 #define VOL_CAP_FMT_HARDLINKS                   0x00000004
 190 #define VOL_CAP_FMT_JOURNAL                     0x00000008
 191 #define VOL_CAP_FMT_JOURNAL_ACTIVE              0x00000010
 192 #define VOL_CAP_FMT_NO_ROOT_TIMES               0x00000020
 193 #define VOL_CAP_FMT_SPARSE_FILES                0x00000040
 194 #define VOL_CAP_FMT_ZERO_RUNS                   0x00000080
 195 #define VOL_CAP_FMT_CASE_SENSITIVE              0x00000100
 196 #define VOL_CAP_FMT_CASE_PRESERVING             0x00000200
 197 #define VOL_CAP_FMT_FAST_STATFS                 0x00000400
 198 #define VOL_CAP_FMT_2TB_FILESIZE                0x00000800
 199
 200
 201 /*
 202  * VOL_CAP_INT_SEARCHFS: When set, the volume implements the
 203  * searchfs() system call (the vnop_searchfs vnode operation).
 204  *
 205  * VOL_CAP_INT_ATTRLIST: When set, the volume implements the
 206  * getattrlist() and setattrlist() system calls (vnop_getattrlist
 207  * and vnop_setattrlist vnode operations) for the volume, files,
 208  * and directories.  The volume may or may not implement the
 209  * readdirattr() system call.  XXX Is there any minimum set
 210  * of attributes that should be supported?  To determine the
 211  * set of supported attributes, get the ATTR_VOL_ATTRIBUTES
 212  * attribute of the volume.
 213  *
 214  * VOL_CAP_INT_NFSEXPORT: When set, the volume implements exporting
 215  * of NFS volumes.
 216  *
 217  * VOL_CAP_INT_READDIRATTR: When set, the volume implements the
 218  * readdirattr() system call (vnop_readdirattr vnode operation).
 219  *
 220  * VOL_CAP_INT_EXCHANGEDATA: When set, the volume implements the
 221  * exchangedata() system call (VNOP_EXCHANGE vnode operation).
 222  *
 223  * VOL_CAP_INT_COPYFILE: When set, the volume implements the
 224  * VOP_COPYFILE vnode operation.  (XXX There should be a copyfile()
 225  * system call in <unistd.h>.)
 226  *
 227  * VOL_CAP_INT_ALLOCATE: When set, the volume implements the
 228  * VNOP_ALLOCATE vnode operation, which means it implements the
 229  * F_PREALLOCATE selector of fcntl(2).
 230  *
 231  * VOL_CAP_INT_VOL_RENAME: When set, the volume implements the
 232  * ATTR_VOL_NAME attribute for both getattrlist() and setattrlist().
 233  * The volume can be renamed by setting ATTR_VOL_NAME with setattrlist().
 234  *
 235  * VOL_CAP_INT_ADVLOCK: When set, the volume implements POSIX style
 236  * byte range locks via vnop_advlock (accessible from fcntl(2)).
 237  *
 238  * VOL_CAP_INT_FLOCK: When set, the volume implements whole-file flock(2)
 239  * style locks via vnop_advlock.  This includes the O_EXLOCK and O_SHLOCK
 240  * flags of the open(2) call.
 241  *
 242  */
 243 #define VOL_CAP_INT_SEARCHFS                    0x00000001
 244 #define VOL_CAP_INT_ATTRLIST                    0x00000002
 245 #define VOL_CAP_INT_NFSEXPORT                   0x00000004
 246 #define VOL_CAP_INT_READDIRATTR                 0x00000008
 247 #define VOL_CAP_INT_EXCHANGEDATA                0x00000010
 248 #define VOL_CAP_INT_COPYFILE                    0x00000020
 249 #define VOL_CAP_INT_ALLOCATE                    0x00000040
 250 #define VOL_CAP_INT_VOL_RENAME                  0x00000080
 251 #define VOL_CAP_INT_ADVLOCK                     0x00000100
 252 #define VOL_CAP_INT_FLOCK                       0x00000200
 253 #define VOL_CAP_INT_EXTENDED_SECURITY           0x00000400
 254 #define VOL_CAP_INT_USERACCESS                  0x00000800
 255
 256 typedef struct vol_attributes_attr {
 257         attribute_set_t validattr;
 258         attribute_set_t nativeattr;
 259 } vol_attributes_attr_t;
 260
 261 #define ATTR_CMN_NAME                           0x00000001
 262 #define ATTR_CMN_DEVID                          0x00000002
 263 #define ATTR_CMN_FSID                           0x00000004
 264 #define ATTR_CMN_OBJTYPE                        0x00000008
 265 #define ATTR_CMN_OBJTAG                         0x00000010
 266 #define ATTR_CMN_OBJID                          0x00000020
 267 #define ATTR_CMN_OBJPERMANENTID                 0x00000040
 268 #define ATTR_CMN_PAROBJID                       0x00000080
 269 #define ATTR_CMN_SCRIPT                         0x00000100
 270 #define ATTR_CMN_CRTIME                         0x00000200
 271 #define ATTR_CMN_MODTIME                        0x00000400
 272 #define ATTR_CMN_CHGTIME                        0x00000800
 273 #define ATTR_CMN_ACCTIME                        0x00001000
 274 #define ATTR_CMN_BKUPTIME                       0x00002000
 275 #define ATTR_CMN_FNDRINFO                       0x00004000
 276 #define ATTR_CMN_OWNERID                        0x00008000
 277 #define ATTR_CMN_GRPID                          0x00010000
 278 #define ATTR_CMN_ACCESSMASK                     0x00020000
 279 #define ATTR_CMN_FLAGS                          0x00040000
 280 #define ATTR_CMN_USERACCESS                     0x00200000
 281 #define ATTR_CMN_EXTENDED_SECURITY              0x00400000
 282 #define ATTR_CMN_UUID                           0x00800000
 283 #define ATTR_CMN_GRPUUID                        0x01000000
 284
 285 #define ATTR_CMN_VALIDMASK                      0x003FFFFF
 286 #define ATTR_CMN_SETMASK                        0x01C7FF00
 287 #define ATTR_CMN_VOLSETMASK                     0x00006700
 288
 289 #define ATTR_VOL_FSTYPE                         0x00000001
 290 #define ATTR_VOL_SIGNATURE                      0x00000002
 291 #define ATTR_VOL_SIZE                           0x00000004
 292 #define ATTR_VOL_SPACEFREE                      0x00000008
 293 #define ATTR_VOL_SPACEAVAIL                     0x00000010
 294 #define ATTR_VOL_MINALLOCATION                  0x00000020
 295 #define ATTR_VOL_ALLOCATIONCLUMP                0x00000040
 296 #define ATTR_VOL_IOBLOCKSIZE                    0x00000080
 297 #define ATTR_VOL_OBJCOUNT                       0x00000100
 298 #define ATTR_VOL_FILECOUNT                      0x00000200
 299 #define ATTR_VOL_DIRCOUNT                       0x00000400
 300 #define ATTR_VOL_MAXOBJCOUNT                    0x00000800
 301 #define ATTR_VOL_MOUNTPOINT                     0x00001000
 302 #define ATTR_VOL_NAME                           0x00002000
 303 #define ATTR_VOL_MOUNTFLAGS                     0x00004000
 304 #define ATTR_VOL_MOUNTEDDEVICE                  0x00008000
 305 #define ATTR_VOL_ENCODINGSUSED                  0x00010000
 306 #define ATTR_VOL_CAPABILITIES                   0x00020000
 307 #define ATTR_VOL_ATTRIBUTES                     0x40000000
 308 #define ATTR_VOL_INFO                           0x80000000
 309
 310 #define ATTR_VOL_VALIDMASK                      0xC003FFFF
 311 #define ATTR_VOL_SETMASK                        0x80002000
 312
 313
 314 /* File/directory attributes: */
 315 #define ATTR_DIR_LINKCOUNT                      0x00000001
 316 #define ATTR_DIR_ENTRYCOUNT                     0x00000002
 317 #define ATTR_DIR_MOUNTSTATUS                    0x00000004
 318 #define DIR_MNTSTATUS_MNTPOINT          0x00000001
 319
 320 #define ATTR_DIR_VALIDMASK                      0x00000007
 321 #define ATTR_DIR_SETMASK                        0x00000000
 322
 323 #define ATTR_FILE_LINKCOUNT                     0x00000001
 324 #define ATTR_FILE_TOTALSIZE                     0x00000002
 325 #define ATTR_FILE_ALLOCSIZE                     0x00000004
 326 #define ATTR_FILE_IOBLOCKSIZE                   0x00000008
 327 #define ATTR_FILE_DEVTYPE                       0x00000020
 328 #define ATTR_FILE_FORKCOUNT                     0x00000080
 329 #define ATTR_FILE_FORKLIST                      0x00000100
 330 #define ATTR_FILE_DATALENGTH                    0x00000200
 331 #define ATTR_FILE_DATAALLOCSIZE                 0x00000400
 332 #define ATTR_FILE_RSRCLENGTH                    0x00001000
 333 #define ATTR_FILE_RSRCALLOCSIZE                 0x00002000
 334
 335 #define ATTR_FILE_VALIDMASK                     0x00007FFF
 336 #define ATTR_FILE_SETMASK                       0x00000020
 337
 338 #define ATTR_FORK_TOTALSIZE                     0x00000001
 339 #define ATTR_FORK_ALLOCSIZE                     0x00000002
 340
 341 #define ATTR_FORK_VALIDMASK                     0x00000003
 342 #define ATTR_FORK_SETMASK                       0x00000000
 343
 344 /* Obsolete, implemented, not supported */
 345 #define ATTR_CMN_NAMEDATTRCOUNT                 0x00080000      /* not implemented */
 346 #define ATTR_CMN_NAMEDATTRLIST                  0x00100000      /* not implemented */
 347 #define ATTR_FILE_CLUMPSIZE                     0x00000010      /* obsolete */
 348 #define ATTR_FILE_FILETYPE                      0x00000040      /* always zero */
 349 #define ATTR_FILE_DATAEXTENTS                   0x00000800      /* obsolete, HFS-specific */
 350 #define ATTR_FILE_RSRCEXTENTS                   0x00004000      /* obsolete, HFS-specific */
 351
 352 /*
 353  * Searchfs
 354  */
 355 #define SRCHFS_START                            0x00000001
 356 #define SRCHFS_MATCHPARTIALNAMES                0x00000002
 357 #define SRCHFS_MATCHDIRS                        0x00000004
 358 #define SRCHFS_MATCHFILES                       0x00000008
 359 #define SRCHFS_SKIPLINKS                        0x00000010
 360 #define SRCHFS_SKIPINVISIBLE                    0x00000020
 361 #define SRCHFS_SKIPPACKAGES                     0x00000040
 362 #define SRCHFS_SKIPINAPPROPRIATE                0x00000080
 363
 364 #define SRCHFS_NEGATEPARAMS                     0x80000000
 365 #define SRCHFS_VALIDOPTIONSMASK                 0x800000FF
 366
 367 struct fssearchblock {
 368         struct attrlist         *returnattrs;
 369         void                            *returnbuffer;
 370         size_t                          returnbuffersize;
 371         u_long                          maxmatches;
 372         struct timeval          timelimit;
 373         void                            *searchparams1;
 374         size_t                          sizeofsearchparams1;
 375         void                            *searchparams2;
 376         size_t                          sizeofsearchparams2;
 377         struct attrlist         searchattrs;
 378 };
 379
 380 #ifdef KERNEL
 381 /* LP64 version of fssearchblock.  all pointers and longs
 382  * grow when we're dealing with a 64-bit process.
 383  * WARNING - keep in sync with fssearchblock
 384  */
 385 // LP64todo - should this move?
 386
 387 #if __DARWIN_ALIGN_NATURAL
 388 #pragma options align=natural
 389 #endif
 390
 391 struct user_fssearchblock {
 392         user_addr_t         returnattrs;
 393         user_addr_t         returnbuffer;
 394         user_size_t         returnbuffersize;
 395         user_ulong_t        maxmatches;
 396         struct timeval          timelimit;
 397         user_addr_t         searchparams1;
 398         user_size_t         sizeofsearchparams1;
 399         user_addr_t         searchparams2;
 400         user_size_t         sizeofsearchparams2;
 401         struct attrlist         searchattrs;
 402 };
 403
 404 #if __DARWIN_ALIGN_NATURAL
 405 #pragma options align=reset
 406 #endif
 407
 408
 409 #endif // KERNEL
 410
 411
 412 struct searchstate {
 413         u_char                          reserved[556];          //      sizeof( SearchState )
 414 };
 415
 416
 417 #define FST_EOF (-1)                            /* end-of-file offset */
 418
 419 #endif /* __APPLE_API_UNSTABLE */
 420 #endif /* !_SYS_ATTR_H_ */