src/basic/missing.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 /***
   6   This file is part of systemd.
   7
   8   Copyright 2010 Lennart Poettering
   9
  10   systemd is free software; you can redistribute it and/or modify it
  11   under the terms of the GNU Lesser General Public License as published by
  12   the Free Software Foundation; either version 2.1 of the License, or
  13   (at your option) any later version.
  14
  15   systemd is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   Lesser General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  22 ***/
  23
  24 /* Missing glibc definitions to access certain kernel APIs */
  25
  26 #include <sys/resource.h>
  27 #include <sys/syscall.h>
  28 #include <fcntl.h>
  29 #include <stdlib.h>
  30 #include <unistd.h>
  31 #include <errno.h>
  32 #include <linux/oom.h>
  33 #include <linux/input.h>
  34 #include <linux/if_link.h>
  35 #include <linux/loop.h>
  36 #include <linux/audit.h>
  37 #include <linux/capability.h>
  38 #include <linux/neighbour.h>
  39
  40 #ifdef HAVE_AUDIT
  41 #include <libaudit.h>
  42 #endif
  43
  44 #ifdef ARCH_MIPS
  45 #include <asm/sgidefs.h>
  46 #endif
  47
  48 #ifdef HAVE_LINUX_BTRFS_H
  49 #include <linux/btrfs.h>
  50 #endif
  51
  52 #include "macro.h"
  53
  54 #ifndef RLIMIT_RTTIME
  55 #define RLIMIT_RTTIME 15
  56 #endif
  57
  58 /* If RLIMIT_RTTIME is not defined, then we cannot use RLIMIT_NLIMITS as is */
  59 #define _RLIMIT_MAX (RLIMIT_RTTIME+1 > RLIMIT_NLIMITS ? RLIMIT_RTTIME+1 : RLIMIT_NLIMITS)
  60
  61 #ifndef F_LINUX_SPECIFIC_BASE
  62 #define F_LINUX_SPECIFIC_BASE 1024
  63 #endif
  64
  65 #ifndef F_SETPIPE_SZ
  66 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
  67 #endif
  68
  69 #ifndef F_GETPIPE_SZ
  70 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
  71 #endif
  72
  73 #ifndef F_ADD_SEALS
  74 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
  75 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
  76
  77 #define F_SEAL_SEAL     0x0001  /* prevent further seals from being set */
  78 #define F_SEAL_SHRINK   0x0002  /* prevent file from shrinking */
  79 #define F_SEAL_GROW     0x0004  /* prevent file from growing */
  80 #define F_SEAL_WRITE    0x0008  /* prevent writes */
  81 #endif
  82
  83 #ifndef F_OFD_GETLK
  84 #define F_OFD_GETLK     36
  85 #define F_OFD_SETLK     37
  86 #define F_OFD_SETLKW    38
  87 #endif
  88
  89 #ifndef MFD_ALLOW_SEALING
  90 #define MFD_ALLOW_SEALING 0x0002U
  91 #endif
  92
  93 #ifndef MFD_CLOEXEC
  94 #define MFD_CLOEXEC 0x0001U
  95 #endif
  96
  97 #ifndef IP_FREEBIND
  98 #define IP_FREEBIND 15
  99 #endif
 100
 101 #ifndef OOM_SCORE_ADJ_MIN
 102 #define OOM_SCORE_ADJ_MIN (-1000)
 103 #endif
 104
 105 #ifndef OOM_SCORE_ADJ_MAX
 106 #define OOM_SCORE_ADJ_MAX 1000
 107 #endif
 108
 109 #ifndef AUDIT_SERVICE_START
 110 #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
 111 #endif
 112
 113 #ifndef AUDIT_SERVICE_STOP
 114 #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
 115 #endif
 116
 117 #ifndef TIOCVHANGUP
 118 #define TIOCVHANGUP 0x5437
 119 #endif
 120
 121 #ifndef IP_TRANSPARENT
 122 #define IP_TRANSPARENT 19
 123 #endif
 124
 125 #ifndef SOL_NETLINK
 126 #define SOL_NETLINK 270
 127 #endif
 128
 129 #ifndef NETLINK_LIST_MEMBERSHIPS
 130 #define NETLINK_LIST_MEMBERSHIPS 9
 131 #endif
 132
 133 #if !HAVE_DECL_PIVOT_ROOT
 134 static inline int pivot_root(const char *new_root, const char *put_old) {
 135         return syscall(SYS_pivot_root, new_root, put_old);
 136 }
 137 #endif
 138
 139 #ifndef __NR_memfd_create
 140 #  if defined __x86_64__
 141 #    define __NR_memfd_create 319
 142 #  elif defined __arm__
 143 #    define __NR_memfd_create 385
 144 #  elif defined __aarch64__
 145 #    define __NR_memfd_create 279
 146 #  elif defined __s390__
 147 #    define __NR_memfd_create 350
 148 #  elif defined _MIPS_SIM
 149 #    if _MIPS_SIM == _MIPS_SIM_ABI32
 150 #      define __NR_memfd_create 4354
 151 #    endif
 152 #    if _MIPS_SIM == _MIPS_SIM_NABI32
 153 #      define __NR_memfd_create 6318
 154 #    endif
 155 #    if _MIPS_SIM == _MIPS_SIM_ABI64
 156 #      define __NR_memfd_create 5314
 157 #    endif
 158 #  elif defined __i386__
 159 #    define __NR_memfd_create 356
 160 #  else
 161 #    warning "__NR_memfd_create unknown for your architecture"
 162 #    define __NR_memfd_create 0xffffffff
 163 #  endif
 164 #endif
 165
 166 #ifndef HAVE_MEMFD_CREATE
 167 static inline int memfd_create(const char *name, unsigned int flags) {
 168         return syscall(__NR_memfd_create, name, flags);
 169 }
 170 #endif
 171
 172 #ifndef __NR_getrandom
 173 #  if defined __x86_64__
 174 #    define __NR_getrandom 318
 175 #  elif defined(__i386__)
 176 #    define __NR_getrandom 355
 177 #  elif defined(__arm__)
 178 #    define __NR_getrandom 384
 179 # elif defined(__aarch64__)
 180 #    define __NR_getrandom 278
 181 #  elif defined(__ia64__)
 182 #    define __NR_getrandom 1339
 183 #  elif defined(__m68k__)
 184 #    define __NR_getrandom 352
 185 #  elif defined(__s390x__)
 186 #    define __NR_getrandom 349
 187 #  elif defined(__powerpc__)
 188 #    define __NR_getrandom 359
 189 #  elif defined _MIPS_SIM
 190 #    if _MIPS_SIM == _MIPS_SIM_ABI32
 191 #      define __NR_getrandom 4353
 192 #    endif
 193 #    if _MIPS_SIM == _MIPS_SIM_NABI32
 194 #      define __NR_getrandom 6317
 195 #    endif
 196 #    if _MIPS_SIM == _MIPS_SIM_ABI64
 197 #      define __NR_getrandom 5313
 198 #    endif
 199 #  else
 200 #    warning "__NR_getrandom unknown for your architecture"
 201 #    define __NR_getrandom 0xffffffff
 202 #  endif
 203 #endif
 204
 205 #if !HAVE_DECL_GETRANDOM
 206 static inline int getrandom(void *buffer, size_t count, unsigned flags) {
 207         return syscall(__NR_getrandom, buffer, count, flags);
 208 }
 209 #endif
 210
 211 #ifndef GRND_NONBLOCK
 212 #define GRND_NONBLOCK 0x0001
 213 #endif
 214
 215 #ifndef GRND_RANDOM
 216 #define GRND_RANDOM 0x0002
 217 #endif
 218
 219 #ifndef BTRFS_IOCTL_MAGIC
 220 #define BTRFS_IOCTL_MAGIC 0x94
 221 #endif
 222
 223 #ifndef BTRFS_PATH_NAME_MAX
 224 #define BTRFS_PATH_NAME_MAX 4087
 225 #endif
 226
 227 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
 228 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
 229 #endif
 230
 231 #ifndef BTRFS_FSID_SIZE
 232 #define BTRFS_FSID_SIZE 16
 233 #endif
 234
 235 #ifndef BTRFS_UUID_SIZE
 236 #define BTRFS_UUID_SIZE 16
 237 #endif
 238
 239 #ifndef BTRFS_SUBVOL_RDONLY
 240 #define BTRFS_SUBVOL_RDONLY (1ULL << 1)
 241 #endif
 242
 243 #ifndef BTRFS_SUBVOL_NAME_MAX
 244 #define BTRFS_SUBVOL_NAME_MAX 4039
 245 #endif
 246
 247 #ifndef BTRFS_INO_LOOKUP_PATH_MAX
 248 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
 249 #endif
 250
 251 #ifndef BTRFS_SEARCH_ARGS_BUFSIZE
 252 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
 253 #endif
 254
 255 #ifndef BTRFS_QGROUP_LEVEL_SHIFT
 256 #define BTRFS_QGROUP_LEVEL_SHIFT 48
 257 #endif
 258
 259 #ifndef HAVE_LINUX_BTRFS_H
 260 struct btrfs_ioctl_vol_args {
 261         int64_t fd;
 262         char name[BTRFS_PATH_NAME_MAX + 1];
 263 };
 264
 265 struct btrfs_qgroup_limit {
 266         __u64 flags;
 267         __u64 max_rfer;
 268         __u64 max_excl;
 269         __u64 rsv_rfer;
 270         __u64 rsv_excl;
 271 };
 272
 273 struct btrfs_qgroup_inherit {
 274         __u64 flags;
 275         __u64 num_qgroups;
 276         __u64 num_ref_copies;
 277         __u64 num_excl_copies;
 278         struct btrfs_qgroup_limit lim;
 279         __u64 qgroups[0];
 280 };
 281
 282 struct btrfs_ioctl_qgroup_limit_args {
 283         __u64 qgroupid;
 284         struct btrfs_qgroup_limit lim;
 285 };
 286
 287 struct btrfs_ioctl_vol_args_v2 {
 288         __s64 fd;
 289         __u64 transid;
 290         __u64 flags;
 291         union {
 292                 struct {
 293                         __u64 size;
 294                         struct btrfs_qgroup_inherit *qgroup_inherit;
 295                 };
 296                 __u64 unused[4];
 297         };
 298         char name[BTRFS_SUBVOL_NAME_MAX + 1];
 299 };
 300
 301 struct btrfs_ioctl_dev_info_args {
 302         uint64_t devid;                         /* in/out */
 303         uint8_t uuid[BTRFS_UUID_SIZE];          /* in/out */
 304         uint64_t bytes_used;                    /* out */
 305         uint64_t total_bytes;                   /* out */
 306         uint64_t unused[379];                   /* pad to 4k */
 307         char path[BTRFS_DEVICE_PATH_NAME_MAX];  /* out */
 308 };
 309
 310 struct btrfs_ioctl_fs_info_args {
 311         uint64_t max_id;                        /* out */
 312         uint64_t num_devices;                   /* out */
 313         uint8_t fsid[BTRFS_FSID_SIZE];          /* out */
 314         uint64_t reserved[124];                 /* pad to 1k */
 315 };
 316
 317 struct btrfs_ioctl_ino_lookup_args {
 318         __u64 treeid;
 319         __u64 objectid;
 320         char name[BTRFS_INO_LOOKUP_PATH_MAX];
 321 };
 322
 323 struct btrfs_ioctl_search_key {
 324         /* which root are we searching.  0 is the tree of tree roots */
 325         __u64 tree_id;
 326
 327         /* keys returned will be >= min and <= max */
 328         __u64 min_objectid;
 329         __u64 max_objectid;
 330
 331         /* keys returned will be >= min and <= max */
 332         __u64 min_offset;
 333         __u64 max_offset;
 334
 335         /* max and min transids to search for */
 336         __u64 min_transid;
 337         __u64 max_transid;
 338
 339         /* keys returned will be >= min and <= max */
 340         __u32 min_type;
 341         __u32 max_type;
 342
 343         /*
 344          * how many items did userland ask for, and how many are we
 345          * returning
 346          */
 347         __u32 nr_items;
 348
 349         /* align to 64 bits */
 350         __u32 unused;
 351
 352         /* some extra for later */
 353         __u64 unused1;
 354         __u64 unused2;
 355         __u64 unused3;
 356         __u64 unused4;
 357 };
 358
 359 struct btrfs_ioctl_search_header {
 360         __u64 transid;
 361         __u64 objectid;
 362         __u64 offset;
 363         __u32 type;
 364         __u32 len;
 365 };
 366
 367
 368 struct btrfs_ioctl_search_args {
 369         struct btrfs_ioctl_search_key key;
 370         char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
 371 };
 372
 373 struct btrfs_ioctl_clone_range_args {
 374         __s64 src_fd;
 375         __u64 src_offset, src_length;
 376         __u64 dest_offset;
 377 };
 378
 379 #define BTRFS_QUOTA_CTL_ENABLE  1
 380 #define BTRFS_QUOTA_CTL_DISABLE 2
 381 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
 382 struct btrfs_ioctl_quota_ctl_args {
 383         __u64 cmd;
 384         __u64 status;
 385 };
 386 #endif
 387
 388 #ifndef BTRFS_IOC_DEFRAG
 389 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
 390                                  struct btrfs_ioctl_vol_args)
 391 #endif
 392
 393 #ifndef BTRFS_IOC_RESIZE
 394 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
 395                                  struct btrfs_ioctl_vol_args)
 396 #endif
 397
 398 #ifndef BTRFS_IOC_CLONE
 399 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
 400 #endif
 401
 402 #ifndef BTRFS_IOC_CLONE_RANGE
 403 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
 404                                  struct btrfs_ioctl_clone_range_args)
 405 #endif
 406
 407 #ifndef BTRFS_IOC_SUBVOL_CREATE
 408 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
 409                                  struct btrfs_ioctl_vol_args)
 410 #endif
 411
 412 #ifndef BTRFS_IOC_SNAP_DESTROY
 413 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
 414                                  struct btrfs_ioctl_vol_args)
 415 #endif
 416
 417 #ifndef BTRFS_IOC_TREE_SEARCH
 418 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
 419                                  struct btrfs_ioctl_search_args)
 420 #endif
 421
 422 #ifndef BTRFS_IOC_INO_LOOKUP
 423 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
 424                                  struct btrfs_ioctl_ino_lookup_args)
 425 #endif
 426
 427 #ifndef BTRFS_IOC_SNAP_CREATE_V2
 428 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
 429                                  struct btrfs_ioctl_vol_args_v2)
 430 #endif
 431
 432 #ifndef BTRFS_IOC_SUBVOL_GETFLAGS
 433 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
 434 #endif
 435
 436 #ifndef BTRFS_IOC_SUBVOL_SETFLAGS
 437 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
 438 #endif
 439
 440 #ifndef BTRFS_IOC_DEV_INFO
 441 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
 442                                  struct btrfs_ioctl_dev_info_args)
 443 #endif
 444
 445 #ifndef BTRFS_IOC_FS_INFO
 446 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
 447                                  struct btrfs_ioctl_fs_info_args)
 448 #endif
 449
 450 #ifndef BTRFS_IOC_DEVICES_READY
 451 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
 452                                  struct btrfs_ioctl_vol_args)
 453 #endif
 454
 455 #ifndef BTRFS_IOC_QUOTA_CTL
 456 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
 457                                struct btrfs_ioctl_quota_ctl_args)
 458 #endif
 459
 460 #ifndef BTRFS_IOC_QGROUP_LIMIT
 461 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
 462                                struct btrfs_ioctl_qgroup_limit_args)
 463 #endif
 464
 465 #ifndef BTRFS_FIRST_FREE_OBJECTID
 466 #define BTRFS_FIRST_FREE_OBJECTID 256
 467 #endif
 468
 469 #ifndef BTRFS_LAST_FREE_OBJECTID
 470 #define BTRFS_LAST_FREE_OBJECTID -256ULL
 471 #endif
 472
 473 #ifndef BTRFS_ROOT_TREE_OBJECTID
 474 #define BTRFS_ROOT_TREE_OBJECTID 1
 475 #endif
 476
 477 #ifndef BTRFS_QUOTA_TREE_OBJECTID
 478 #define BTRFS_QUOTA_TREE_OBJECTID 8ULL
 479 #endif
 480
 481 #ifndef BTRFS_ROOT_ITEM_KEY
 482 #define BTRFS_ROOT_ITEM_KEY 132
 483 #endif
 484
 485 #ifndef BTRFS_QGROUP_STATUS_KEY
 486 #define BTRFS_QGROUP_STATUS_KEY 240
 487 #endif
 488
 489 #ifndef BTRFS_QGROUP_INFO_KEY
 490 #define BTRFS_QGROUP_INFO_KEY 242
 491 #endif
 492
 493 #ifndef BTRFS_QGROUP_LIMIT_KEY
 494 #define BTRFS_QGROUP_LIMIT_KEY 244
 495 #endif
 496
 497 #ifndef BTRFS_QGROUP_RELATION_KEY
 498 #define BTRFS_QGROUP_RELATION_KEY 246
 499 #endif
 500
 501 #ifndef BTRFS_ROOT_BACKREF_KEY
 502 #define BTRFS_ROOT_BACKREF_KEY 144
 503 #endif
 504
 505 #ifndef BTRFS_SUPER_MAGIC
 506 #define BTRFS_SUPER_MAGIC 0x9123683E
 507 #endif
 508
 509 #ifndef CGROUP_SUPER_MAGIC
 510 #define CGROUP_SUPER_MAGIC 0x27e0eb
 511 #endif
 512
 513 #ifndef TMPFS_MAGIC
 514 #define TMPFS_MAGIC 0x01021994
 515 #endif
 516
 517 #ifndef MS_MOVE
 518 #define MS_MOVE 8192
 519 #endif
 520
 521 #ifndef MS_PRIVATE
 522 #define MS_PRIVATE  (1 << 18)
 523 #endif
 524
 525 #if !HAVE_DECL_GETTID
 526 static inline pid_t gettid(void) {
 527         return (pid_t) syscall(SYS_gettid);
 528 }
 529 #endif
 530
 531 #ifndef SCM_SECURITY
 532 #define SCM_SECURITY 0x03
 533 #endif
 534
 535 #ifndef MS_STRICTATIME
 536 #define MS_STRICTATIME (1<<24)
 537 #endif
 538
 539 #ifndef MS_REC
 540 #define MS_REC 16384
 541 #endif
 542
 543 #ifndef MS_SHARED
 544 #define MS_SHARED (1<<20)
 545 #endif
 546
 547 #ifndef PR_SET_NO_NEW_PRIVS
 548 #define PR_SET_NO_NEW_PRIVS 38
 549 #endif
 550
 551 #ifndef PR_SET_CHILD_SUBREAPER
 552 #define PR_SET_CHILD_SUBREAPER 36
 553 #endif
 554
 555 #ifndef MAX_HANDLE_SZ
 556 #define MAX_HANDLE_SZ 128
 557 #endif
 558
 559 #ifndef __NR_name_to_handle_at
 560 #  if defined(__x86_64__)
 561 #    define __NR_name_to_handle_at 303
 562 #  elif defined(__i386__)
 563 #    define __NR_name_to_handle_at 341
 564 #  elif defined(__arm__)
 565 #    define __NR_name_to_handle_at 370
 566 #  elif defined(__powerpc__)
 567 #    define __NR_name_to_handle_at 345
 568 #  else
 569 #    error "__NR_name_to_handle_at is not defined"
 570 #  endif
 571 #endif
 572
 573 #if !HAVE_DECL_NAME_TO_HANDLE_AT
 574 struct file_handle {
 575         unsigned int handle_bytes;
 576         int handle_type;
 577         unsigned char f_handle[0];
 578 };
 579
 580 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
 581         return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
 582 }
 583 #endif
 584
 585 #ifndef HAVE_SECURE_GETENV
 586 #  ifdef HAVE___SECURE_GETENV
 587 #    define secure_getenv __secure_getenv
 588 #  else
 589 #    error "neither secure_getenv nor __secure_getenv are available"
 590 #  endif
 591 #endif
 592
 593 #ifndef CIFS_MAGIC_NUMBER
 594 #  define CIFS_MAGIC_NUMBER 0xFF534D42
 595 #endif
 596
 597 #ifndef TFD_TIMER_CANCEL_ON_SET
 598 #  define TFD_TIMER_CANCEL_ON_SET (1 << 1)
 599 #endif
 600
 601 #ifndef SO_REUSEPORT
 602 #  define SO_REUSEPORT 15
 603 #endif
 604
 605 #ifndef EVIOCREVOKE
 606 #  define EVIOCREVOKE _IOW('E', 0x91, int)
 607 #endif
 608
 609 #ifndef DRM_IOCTL_SET_MASTER
 610 #  define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
 611 #endif
 612
 613 #ifndef DRM_IOCTL_DROP_MASTER
 614 #  define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
 615 #endif
 616
 617 #if defined(__i386__) || defined(__x86_64__)
 618
 619 /* The precise definition of __O_TMPFILE is arch specific, so let's
 620  * just define this on x86 where we know the value. */
 621
 622 #ifndef __O_TMPFILE
 623 #define __O_TMPFILE     020000000
 624 #endif
 625
 626 /* a horrid kludge trying to make sure that this will fail on old kernels */
 627 #ifndef O_TMPFILE
 628 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
 629 #endif
 630
 631 #endif
 632
 633 #ifndef __NR_setns
 634 #  if defined(__x86_64__)
 635 #    define __NR_setns 308
 636 #  elif defined(__i386__)
 637 #    define __NR_setns 346
 638 #  else
 639 #    error "__NR_setns is not defined"
 640 #  endif
 641 #endif
 642
 643 #if !HAVE_DECL_SETNS
 644 static inline int setns(int fd, int nstype) {
 645         return syscall(__NR_setns, fd, nstype);
 646 }
 647 #endif
 648
 649 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
 650 #define LO_FLAGS_PARTSCAN 8
 651 #endif
 652
 653 #ifndef LOOP_CTL_REMOVE
 654 #define LOOP_CTL_REMOVE 0x4C81
 655 #endif
 656
 657 #ifndef LOOP_CTL_GET_FREE
 658 #define LOOP_CTL_GET_FREE 0x4C82
 659 #endif
 660
 661 #if !HAVE_DECL_IFLA_INET6_ADDR_GEN_MODE
 662 #define IFLA_INET6_UNSPEC 0
 663 #define IFLA_INET6_FLAGS 1
 664 #define IFLA_INET6_CONF 2
 665 #define IFLA_INET6_STATS 3
 666 #define IFLA_INET6_MCAST 4
 667 #define IFLA_INET6_CACHEINFO 5
 668 #define IFLA_INET6_ICMP6STATS 6
 669 #define IFLA_INET6_TOKEN 7
 670 #define IFLA_INET6_ADDR_GEN_MODE 8
 671 #define __IFLA_INET6_MAX 9
 672
 673 #define IFLA_INET6_MAX  (__IFLA_INET6_MAX - 1)
 674
 675 #define IN6_ADDR_GEN_MODE_EUI64 0
 676 #define IN6_ADDR_GEN_MODE_NONE 1
 677 #endif
 678
 679 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
 680 #define IFLA_MACVLAN_UNSPEC 0
 681 #define IFLA_MACVLAN_MODE 1
 682 #define IFLA_MACVLAN_FLAGS 2
 683 #define __IFLA_MACVLAN_MAX 3
 684
 685 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
 686 #endif
 687
 688 #if !HAVE_DECL_IFLA_IPVLAN_MODE
 689 #define IFLA_IPVLAN_UNSPEC 0
 690 #define IFLA_IPVLAN_MODE 1
 691 #define __IFLA_IPVLAN_MAX 2
 692
 693 #define IFLA_IPVLAN_MAX (__IFLA_IPVLAN_MAX - 1)
 694
 695 #define IPVLAN_MODE_L2 0
 696 #define IPVLAN_MODE_L3 1
 697 #define IPVLAN_MAX 2
 698 #endif
 699
 700 #if !HAVE_DECL_IFLA_VTI_REMOTE
 701 #define IFLA_VTI_UNSPEC 0
 702 #define IFLA_VTI_LINK 1
 703 #define IFLA_VTI_IKEY 2
 704 #define IFLA_VTI_OKEY 3
 705 #define IFLA_VTI_LOCAL 4
 706 #define IFLA_VTI_REMOTE 5
 707 #define __IFLA_VTI_MAX 6
 708
 709 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
 710 #endif
 711
 712 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
 713 #undef IFLA_PROMISCUITY
 714 #define IFLA_PROMISCUITY 30
 715 #define IFLA_NUM_TX_QUEUES 31
 716 #define IFLA_NUM_RX_QUEUES 32
 717 #define IFLA_CARRIER 33
 718 #define IFLA_PHYS_PORT_ID 34
 719 #define __IFLA_MAX 35
 720
 721 #define IFLA_MAX (__IFLA_MAX - 1)
 722 #endif
 723
 724 #if !HAVE_DECL_IFLA_BOND_AD_INFO
 725 #define IFLA_BOND_UNSPEC 0
 726 #define IFLA_BOND_MODE 1
 727 #define IFLA_BOND_ACTIVE_SLAVE 2
 728 #define IFLA_BOND_MIIMON 3
 729 #define IFLA_BOND_UPDELAY 4
 730 #define IFLA_BOND_DOWNDELAY 5
 731 #define IFLA_BOND_USE_CARRIER 6
 732 #define IFLA_BOND_ARP_INTERVAL 7
 733 #define IFLA_BOND_ARP_IP_TARGET 8
 734 #define IFLA_BOND_ARP_VALIDATE 9
 735 #define IFLA_BOND_ARP_ALL_TARGETS 10
 736 #define IFLA_BOND_PRIMARY 11
 737 #define IFLA_BOND_PRIMARY_RESELECT 12
 738 #define IFLA_BOND_FAIL_OVER_MAC 13
 739 #define IFLA_BOND_XMIT_HASH_POLICY 14
 740 #define IFLA_BOND_RESEND_IGMP 15
 741 #define IFLA_BOND_NUM_PEER_NOTIF 16
 742 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
 743 #define IFLA_BOND_MIN_LINKS 18
 744 #define IFLA_BOND_LP_INTERVAL 19
 745 #define IFLA_BOND_PACKETS_PER_SLAVE 20
 746 #define IFLA_BOND_AD_LACP_RATE 21
 747 #define IFLA_BOND_AD_SELECT 22
 748 #define IFLA_BOND_AD_INFO 23
 749 #define __IFLA_BOND_MAX 24
 750
 751 #define IFLA_BOND_MAX   (__IFLA_BOND_MAX - 1)
 752 #endif
 753
 754 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
 755 #define IFLA_VLAN_UNSPEC 0
 756 #define IFLA_VLAN_ID 1
 757 #define IFLA_VLAN_FLAGS 2
 758 #define IFLA_VLAN_EGRESS_QOS 3
 759 #define IFLA_VLAN_INGRESS_QOS 4
 760 #define IFLA_VLAN_PROTOCOL 5
 761 #define __IFLA_VLAN_MAX 6
 762
 763 #define IFLA_VLAN_MAX   (__IFLA_VLAN_MAX - 1)
 764 #endif
 765
 766 #if !HAVE_DECL_IFLA_VXLAN_REMCSUM_NOPARTIAL
 767 #define IFLA_VXLAN_UNSPEC 0
 768 #define IFLA_VXLAN_ID 1
 769 #define IFLA_VXLAN_GROUP 2
 770 #define IFLA_VXLAN_LINK 3
 771 #define IFLA_VXLAN_LOCAL 4
 772 #define IFLA_VXLAN_TTL 5
 773 #define IFLA_VXLAN_TOS 6
 774 #define IFLA_VXLAN_LEARNING 7
 775 #define IFLA_VXLAN_AGEING 8
 776 #define IFLA_VXLAN_LIMIT 9
 777 #define IFLA_VXLAN_PORT_RANGE 10
 778 #define IFLA_VXLAN_PROXY 11
 779 #define IFLA_VXLAN_RSC 12
 780 #define IFLA_VXLAN_L2MISS 13
 781 #define IFLA_VXLAN_L3MISS 14
 782 #define IFLA_VXLAN_PORT 15
 783 #define IFLA_VXLAN_GROUP6 16
 784 #define IFLA_VXLAN_LOCAL6 17
 785 #define IFLA_VXLAN_UDP_CSUM 18
 786 #define IFLA_VXLAN_UDP_ZERO_CSUM6_TX 19
 787 #define IFLA_VXLAN_UDP_ZERO_CSUM6_RX 20
 788 #define IFLA_VXLAN_REMCSUM_TX 21
 789 #define IFLA_VXLAN_REMCSUM_RX 22
 790 #define IFLA_VXLAN_GBP 23
 791 #define IFLA_VXLAN_REMCSUM_NOPARTIAL 24
 792 #define __IFLA_VXLAN_MAX 25
 793
 794 #define IFLA_VXLAN_MAX  (__IFLA_VXLAN_MAX - 1)
 795 #endif
 796
 797 #if !HAVE_DECL_IFLA_IPTUN_ENCAP_DPORT
 798 #define IFLA_IPTUN_UNSPEC 0
 799 #define IFLA_IPTUN_LINK 1
 800 #define IFLA_IPTUN_LOCAL 2
 801 #define IFLA_IPTUN_REMOTE 3
 802 #define IFLA_IPTUN_TTL 4
 803 #define IFLA_IPTUN_TOS 5
 804 #define IFLA_IPTUN_ENCAP_LIMIT 6
 805 #define IFLA_IPTUN_FLOWINFO 7
 806 #define IFLA_IPTUN_FLAGS 8
 807 #define IFLA_IPTUN_PROTO 9
 808 #define IFLA_IPTUN_PMTUDISC 10
 809 #define IFLA_IPTUN_6RD_PREFIX 11
 810 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
 811 #define IFLA_IPTUN_6RD_PREFIXLEN 13
 812 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
 813 #define IFLA_IPTUN_ENCAP_TYPE 15
 814 #define IFLA_IPTUN_ENCAP_FLAGS 16
 815 #define IFLA_IPTUN_ENCAP_SPORT 17
 816 #define IFLA_IPTUN_ENCAP_DPORT 18
 817
 818 #define __IFLA_IPTUN_MAX 19
 819
 820 #define IFLA_IPTUN_MAX  (__IFLA_IPTUN_MAX - 1)
 821 #endif
 822
 823 #if !HAVE_DECL_IFLA_GRE_ENCAP_DPORT
 824 #define IFLA_GRE_UNSPEC 0
 825 #define IFLA_GRE_LINK 1
 826 #define IFLA_GRE_IFLAGS 2
 827 #define IFLA_GRE_OFLAGS 3
 828 #define IFLA_GRE_IKEY 4
 829 #define IFLA_GRE_OKEY 5
 830 #define IFLA_GRE_LOCAL 6
 831 #define IFLA_GRE_REMOTE 7
 832 #define IFLA_GRE_TTL 8
 833 #define IFLA_GRE_TOS 9
 834 #define IFLA_GRE_PMTUDISC 10
 835 #define IFLA_GRE_ENCAP_LIMIT 11
 836 #define IFLA_GRE_FLOWINFO 12
 837 #define IFLA_GRE_FLAGS 13
 838 #define IFLA_GRE_ENCAP_TYPE 14
 839 #define IFLA_GRE_ENCAP_FLAGS 15
 840 #define IFLA_GRE_ENCAP_SPORT 16
 841 #define IFLA_GRE_ENCAP_DPORT 17
 842
 843 #define __IFLA_GRE_MAX 18
 844
 845 #define IFLA_GRE_MAX  (__IFLA_GRE_MAX - 1)
 846 #endif
 847
 848 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
 849 #define IFLA_BRIDGE_FLAGS 0
 850 #define IFLA_BRIDGE_MODE 1
 851 #define IFLA_BRIDGE_VLAN_INFO 2
 852 #define __IFLA_BRIDGE_MAX 3
 853
 854 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
 855 #endif
 856
 857 #if !HAVE_DECL_IFLA_BR_PRIORITY
 858 #define IFLA_BR_UNSPEC 0
 859 #define IFLA_BR_FORWARD_DELAY 1
 860 #define IFLA_BR_HELLO_TIME 2
 861 #define IFLA_BR_MAX_AGE 3
 862 #define IFLA_BR_AGEING_TIME 4
 863 #define IFLA_BR_STP_STATE 5
 864 #define IFLA_BR_PRIORITY 6
 865 #define __IFLA_BR_MAX 7
 866
 867 #define IFLA_BR_MAX (__IFLA_BR_MAX - 1)
 868 #endif
 869
 870 #if !HAVE_DECL_IFLA_BRPORT_LEARNING_SYNC
 871 #define IFLA_BRPORT_UNSPEC 0
 872 #define IFLA_BRPORT_STATE 1
 873 #define IFLA_BRPORT_PRIORITY 2
 874 #define IFLA_BRPORT_COST 3
 875 #define IFLA_BRPORT_MODE 4
 876 #define IFLA_BRPORT_GUARD 5
 877 #define IFLA_BRPORT_PROTECT 6
 878 #define IFLA_BRPORT_FAST_LEAVE 7
 879 #define IFLA_BRPORT_LEARNING 8
 880 #define IFLA_BRPORT_UNICAST_FLOOD 9
 881 #define IFLA_BRPORT_PROXYARP 10
 882 #define IFLA_BRPORT_LEARNING_SYNC 11
 883 #define __IFLA_BRPORT_MAX 12
 884
 885 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
 886 #endif
 887
 888 #if !HAVE_DECL_NDA_IFINDEX
 889 #define NDA_UNSPEC 0
 890 #define NDA_DST 1
 891 #define NDA_LLADDR 2
 892 #define NDA_CACHEINFO 3
 893 #define NDA_PROBES 4
 894 #define NDA_VLAN 5
 895 #define NDA_PORT 6
 896 #define NDA_VNI 7
 897 #define NDA_IFINDEX 8
 898 #define __NDA_MAX 9
 899
 900 #define NDA_MAX (__NDA_MAX - 1)
 901 #endif
 902
 903 #ifndef IPV6_UNICAST_IF
 904 #define IPV6_UNICAST_IF 76
 905 #endif
 906
 907 #ifndef IFF_MULTI_QUEUE
 908 #define IFF_MULTI_QUEUE 0x100
 909 #endif
 910
 911 #ifndef IFF_LOWER_UP
 912 #define IFF_LOWER_UP 0x10000
 913 #endif
 914
 915 #ifndef IFF_DORMANT
 916 #define IFF_DORMANT 0x20000
 917 #endif
 918
 919 #ifndef BOND_XMIT_POLICY_ENCAP23
 920 #define BOND_XMIT_POLICY_ENCAP23 3
 921 #endif
 922
 923 #ifndef BOND_XMIT_POLICY_ENCAP34
 924 #define BOND_XMIT_POLICY_ENCAP34 4
 925 #endif
 926
 927 #ifndef NET_ADDR_RANDOM
 928 #  define NET_ADDR_RANDOM 1
 929 #endif
 930
 931 #ifndef NET_NAME_UNKNOWN
 932 #  define NET_NAME_UNKNOWN 0
 933 #endif
 934
 935 #ifndef NET_NAME_ENUM
 936 #  define NET_NAME_ENUM 1
 937 #endif
 938
 939 #ifndef NET_NAME_PREDICTABLE
 940 #  define NET_NAME_PREDICTABLE 2
 941 #endif
 942
 943 #ifndef NET_NAME_USER
 944 #  define NET_NAME_USER 3
 945 #endif
 946
 947 #ifndef NET_NAME_RENAMED
 948 #  define NET_NAME_RENAMED 4
 949 #endif
 950
 951 #ifndef BPF_XOR
 952 #  define BPF_XOR 0xa0
 953 #endif
 954
 955 /* Note that LOOPBACK_IFINDEX is currently not exported by the
 956  * kernel/glibc, but hardcoded internally by the kernel.  However, as
 957  * it is exported to userspace indirectly via rtnetlink and the
 958  * ioctls, and made use of widely we define it here too, in a way that
 959  * is compatible with the kernel's internal definition. */
 960 #ifndef LOOPBACK_IFINDEX
 961 #define LOOPBACK_IFINDEX 1
 962 #endif
 963
 964 #if !HAVE_DECL_IFA_FLAGS
 965 #define IFA_FLAGS 8
 966 #endif
 967
 968 #ifndef IFA_F_NOPREFIXROUTE
 969 #define IFA_F_NOPREFIXROUTE 0x200
 970 #endif
 971
 972 #ifndef MAX_AUDIT_MESSAGE_LENGTH
 973 #define MAX_AUDIT_MESSAGE_LENGTH 8970
 974 #endif
 975
 976 #ifndef AUDIT_NLGRP_MAX
 977 #define AUDIT_NLGRP_READLOG 1
 978 #endif
 979
 980 #ifndef CAP_MAC_OVERRIDE
 981 #define CAP_MAC_OVERRIDE 32
 982 #endif
 983
 984 #ifndef CAP_MAC_ADMIN
 985 #define CAP_MAC_ADMIN 33
 986 #endif
 987
 988 #ifndef CAP_SYSLOG
 989 #define CAP_SYSLOG 34
 990 #endif
 991
 992 #ifndef CAP_WAKE_ALARM
 993 #define CAP_WAKE_ALARM 35
 994 #endif
 995
 996 #ifndef CAP_BLOCK_SUSPEND
 997 #define CAP_BLOCK_SUSPEND 36
 998 #endif
 999
1000 #ifndef CAP_AUDIT_READ
1001 #define CAP_AUDIT_READ 37
1002 #endif
1003
1004 static inline int raw_clone(unsigned long flags, void *child_stack) {
1005 #if defined(__s390__) || defined(__CRIS__)
1006         /* On s390 and cris the order of the first and second arguments
1007          * of the raw clone() system call is reversed. */
1008         return (int) syscall(__NR_clone, child_stack, flags);
1009 #else
1010         return (int) syscall(__NR_clone, flags, child_stack);
1011 #endif
1012 }
1013
1014 static inline pid_t raw_getpid(void) {
1015 #if defined(__alpha__)
1016         return (pid_t) syscall(__NR_getxpid);
1017 #else
1018         return (pid_t) syscall(__NR_getpid);
1019 #endif
1020 }
1021
1022 #if !HAVE_DECL_RENAMEAT2
1023
1024 #ifndef __NR_renameat2
1025 #  if defined __x86_64__
1026 #    define __NR_renameat2 316
1027 #  elif defined __arm__
1028 #    define __NR_renameat2 382
1029 #  elif defined _MIPS_SIM
1030 #    if _MIPS_SIM == _MIPS_SIM_ABI32
1031 #      define __NR_renameat2 4351
1032 #    endif
1033 #    if _MIPS_SIM == _MIPS_SIM_NABI32
1034 #      define __NR_renameat2 6315
1035 #    endif
1036 #    if _MIPS_SIM == _MIPS_SIM_ABI64
1037 #      define __NR_renameat2 5311
1038 #    endif
1039 #  elif defined __i386__
1040 #    define __NR_renameat2 353
1041 #  else
1042 #    warning "__NR_renameat2 unknown for your architecture"
1043 #    define __NR_renameat2 0xffffffff
1044 #  endif
1045 #endif
1046
1047 static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
1048         return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
1049 }
1050 #endif
1051
1052 #ifndef RENAME_NOREPLACE
1053 #define RENAME_NOREPLACE (1 << 0)
1054 #endif
1055
1056 #if !HAVE_DECL_KCMP
1057 static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
1058 #if defined(__NR_kcmp)
1059         return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
1060 #else
1061         errno = ENOSYS;
1062         return -1;
1063 #endif
1064 }
1065 #endif
1066
1067 #ifndef KCMP_FILE
1068 #define KCMP_FILE 0
1069 #endif
1070
1071 #ifndef INPUT_PROP_POINTING_STICK
1072 #define INPUT_PROP_POINTING_STICK 0x05
1073 #endif
1074
1075 #ifndef INPUT_PROP_ACCELEROMETER
1076 #define INPUT_PROP_ACCELEROMETER  0x06
1077 #endif
1078
1079 #if !HAVE_DECL_KEY_SERIAL_T
1080 typedef int32_t key_serial_t;
1081 #endif
1082
1083 #if !HAVE_DECL_KEYCTL
1084 static inline long keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4,unsigned long arg5) {
1085 #if defined(__NR_keyctl)
1086         return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
1087 #else
1088         errno = ENOSYS;
1089         return -1;
1090 #endif
1091 }
1092
1093 static inline key_serial_t add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
1094 #if defined (__NR_add_key)
1095         return syscall(__NR_add_key, type, description, payload, plen, ringid);
1096 #else
1097         errno = ENOSYS;
1098         return -1;
1099 #endif
1100 }
1101
1102 static inline key_serial_t request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
1103 #if defined (__NR_request_key)
1104         return syscall(__NR_request_key, type, description, callout_info, destringid);
1105 #else
1106         errno = ENOSYS;
1107         return -1;
1108 #endif
1109 }
1110 #endif
1111
1112 #ifndef KEYCTL_READ
1113 #define KEYCTL_READ 11
1114 #endif
1115
1116 #ifndef KEYCTL_SET_TIMEOUT
1117 #define KEYCTL_SET_TIMEOUT 15
1118 #endif
1119
1120 #ifndef KEY_SPEC_USER_KEYRING
1121 #define KEY_SPEC_USER_KEYRING -4
1122 #endif