src/basic/missing.h

   1 #pragma once
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 /* Missing glibc definitions to access certain kernel APIs */
  23
  24 #include <errno.h>
  25 #include <fcntl.h>
  26 #include <linux/audit.h>
  27 #include <linux/capability.h>
  28 #include <linux/if_link.h>
  29 #include <linux/input.h>
  30 #include <linux/loop.h>
  31 #include <linux/neighbour.h>
  32 #include <linux/oom.h>
  33 #include <linux/rtnetlink.h>
  34 #include <stdlib.h>
  35 #include <sys/resource.h>
  36 #include <sys/syscall.h>
  37 #include <uchar.h>
  38 #include <unistd.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 #ifndef SOL_SCTP
 134 #define SOL_SCTP 132
 135 #endif
 136
 137 #if !HAVE_DECL_PIVOT_ROOT
 138 static inline int pivot_root(const char *new_root, const char *put_old) {
 139         return syscall(SYS_pivot_root, new_root, put_old);
 140 }
 141 #endif
 142
 143 #ifndef __NR_memfd_create
 144 #  if defined __x86_64__
 145 #    define __NR_memfd_create 319
 146 #  elif defined __arm__
 147 #    define __NR_memfd_create 385
 148 #  elif defined __aarch64__
 149 #    define __NR_memfd_create 279
 150 #  elif defined __s390__
 151 #    define __NR_memfd_create 350
 152 #  elif defined _MIPS_SIM
 153 #    if _MIPS_SIM == _MIPS_SIM_ABI32
 154 #      define __NR_memfd_create 4354
 155 #    endif
 156 #    if _MIPS_SIM == _MIPS_SIM_NABI32
 157 #      define __NR_memfd_create 6318
 158 #    endif
 159 #    if _MIPS_SIM == _MIPS_SIM_ABI64
 160 #      define __NR_memfd_create 5314
 161 #    endif
 162 #  elif defined __i386__
 163 #    define __NR_memfd_create 356
 164 #  else
 165 #    warning "__NR_memfd_create unknown for your architecture"
 166 #    define __NR_memfd_create 0xffffffff
 167 #  endif
 168 #endif
 169
 170 #ifndef HAVE_MEMFD_CREATE
 171 static inline int memfd_create(const char *name, unsigned int flags) {
 172         return syscall(__NR_memfd_create, name, flags);
 173 }
 174 #endif
 175
 176 #ifndef __NR_getrandom
 177 #  if defined __x86_64__
 178 #    define __NR_getrandom 318
 179 #  elif defined(__i386__)
 180 #    define __NR_getrandom 355
 181 #  elif defined(__arm__)
 182 #    define __NR_getrandom 384
 183 # elif defined(__aarch64__)
 184 #    define __NR_getrandom 278
 185 #  elif defined(__ia64__)
 186 #    define __NR_getrandom 1339
 187 #  elif defined(__m68k__)
 188 #    define __NR_getrandom 352
 189 #  elif defined(__s390x__)
 190 #    define __NR_getrandom 349
 191 #  elif defined(__powerpc__)
 192 #    define __NR_getrandom 359
 193 #  elif defined _MIPS_SIM
 194 #    if _MIPS_SIM == _MIPS_SIM_ABI32
 195 #      define __NR_getrandom 4353
 196 #    endif
 197 #    if _MIPS_SIM == _MIPS_SIM_NABI32
 198 #      define __NR_getrandom 6317
 199 #    endif
 200 #    if _MIPS_SIM == _MIPS_SIM_ABI64
 201 #      define __NR_getrandom 5313
 202 #    endif
 203 #  else
 204 #    warning "__NR_getrandom unknown for your architecture"
 205 #    define __NR_getrandom 0xffffffff
 206 #  endif
 207 #endif
 208
 209 #if !HAVE_DECL_GETRANDOM
 210 static inline int getrandom(void *buffer, size_t count, unsigned flags) {
 211         return syscall(__NR_getrandom, buffer, count, flags);
 212 }
 213 #endif
 214
 215 #ifndef GRND_NONBLOCK
 216 #define GRND_NONBLOCK 0x0001
 217 #endif
 218
 219 #ifndef GRND_RANDOM
 220 #define GRND_RANDOM 0x0002
 221 #endif
 222
 223 #ifndef BTRFS_IOCTL_MAGIC
 224 #define BTRFS_IOCTL_MAGIC 0x94
 225 #endif
 226
 227 #ifndef BTRFS_PATH_NAME_MAX
 228 #define BTRFS_PATH_NAME_MAX 4087
 229 #endif
 230
 231 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
 232 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
 233 #endif
 234
 235 #ifndef BTRFS_FSID_SIZE
 236 #define BTRFS_FSID_SIZE 16
 237 #endif
 238
 239 #ifndef BTRFS_UUID_SIZE
 240 #define BTRFS_UUID_SIZE 16
 241 #endif
 242
 243 #ifndef BTRFS_SUBVOL_RDONLY
 244 #define BTRFS_SUBVOL_RDONLY (1ULL << 1)
 245 #endif
 246
 247 #ifndef BTRFS_SUBVOL_NAME_MAX
 248 #define BTRFS_SUBVOL_NAME_MAX 4039
 249 #endif
 250
 251 #ifndef BTRFS_INO_LOOKUP_PATH_MAX
 252 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
 253 #endif
 254
 255 #ifndef BTRFS_SEARCH_ARGS_BUFSIZE
 256 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
 257 #endif
 258
 259 #ifndef BTRFS_QGROUP_LEVEL_SHIFT
 260 #define BTRFS_QGROUP_LEVEL_SHIFT 48
 261 #endif
 262
 263 #ifndef HAVE_LINUX_BTRFS_H
 264 struct btrfs_ioctl_vol_args {
 265         int64_t fd;
 266         char name[BTRFS_PATH_NAME_MAX + 1];
 267 };
 268
 269 struct btrfs_qgroup_limit {
 270         __u64 flags;
 271         __u64 max_rfer;
 272         __u64 max_excl;
 273         __u64 rsv_rfer;
 274         __u64 rsv_excl;
 275 };
 276
 277 struct btrfs_qgroup_inherit {
 278         __u64 flags;
 279         __u64 num_qgroups;
 280         __u64 num_ref_copies;
 281         __u64 num_excl_copies;
 282         struct btrfs_qgroup_limit lim;
 283         __u64 qgroups[0];
 284 };
 285
 286 struct btrfs_ioctl_qgroup_limit_args {
 287         __u64 qgroupid;
 288         struct btrfs_qgroup_limit lim;
 289 };
 290
 291 struct btrfs_ioctl_vol_args_v2 {
 292         __s64 fd;
 293         __u64 transid;
 294         __u64 flags;
 295         union {
 296                 struct {
 297                         __u64 size;
 298                         struct btrfs_qgroup_inherit *qgroup_inherit;
 299                 };
 300                 __u64 unused[4];
 301         };
 302         char name[BTRFS_SUBVOL_NAME_MAX + 1];
 303 };
 304
 305 struct btrfs_ioctl_dev_info_args {
 306         uint64_t devid;                         /* in/out */
 307         uint8_t uuid[BTRFS_UUID_SIZE];          /* in/out */
 308         uint64_t bytes_used;                    /* out */
 309         uint64_t total_bytes;                   /* out */
 310         uint64_t unused[379];                   /* pad to 4k */
 311         char path[BTRFS_DEVICE_PATH_NAME_MAX];  /* out */
 312 };
 313
 314 struct btrfs_ioctl_fs_info_args {
 315         uint64_t max_id;                        /* out */
 316         uint64_t num_devices;                   /* out */
 317         uint8_t fsid[BTRFS_FSID_SIZE];          /* out */
 318         uint64_t reserved[124];                 /* pad to 1k */
 319 };
 320
 321 struct btrfs_ioctl_ino_lookup_args {
 322         __u64 treeid;
 323         __u64 objectid;
 324         char name[BTRFS_INO_LOOKUP_PATH_MAX];
 325 };
 326
 327 struct btrfs_ioctl_search_key {
 328         /* which root are we searching.  0 is the tree of tree roots */
 329         __u64 tree_id;
 330
 331         /* keys returned will be >= min and <= max */
 332         __u64 min_objectid;
 333         __u64 max_objectid;
 334
 335         /* keys returned will be >= min and <= max */
 336         __u64 min_offset;
 337         __u64 max_offset;
 338
 339         /* max and min transids to search for */
 340         __u64 min_transid;
 341         __u64 max_transid;
 342
 343         /* keys returned will be >= min and <= max */
 344         __u32 min_type;
 345         __u32 max_type;
 346
 347         /*
 348          * how many items did userland ask for, and how many are we
 349          * returning
 350          */
 351         __u32 nr_items;
 352
 353         /* align to 64 bits */
 354         __u32 unused;
 355
 356         /* some extra for later */
 357         __u64 unused1;
 358         __u64 unused2;
 359         __u64 unused3;
 360         __u64 unused4;
 361 };
 362
 363 struct btrfs_ioctl_search_header {
 364         __u64 transid;
 365         __u64 objectid;
 366         __u64 offset;
 367         __u32 type;
 368         __u32 len;
 369 };
 370
 371
 372 struct btrfs_ioctl_search_args {
 373         struct btrfs_ioctl_search_key key;
 374         char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
 375 };
 376
 377 struct btrfs_ioctl_clone_range_args {
 378         __s64 src_fd;
 379         __u64 src_offset, src_length;
 380         __u64 dest_offset;
 381 };
 382
 383 #define BTRFS_QUOTA_CTL_ENABLE  1
 384 #define BTRFS_QUOTA_CTL_DISABLE 2
 385 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
 386 struct btrfs_ioctl_quota_ctl_args {
 387         __u64 cmd;
 388         __u64 status;
 389 };
 390 #endif
 391
 392 #ifndef BTRFS_IOC_DEFRAG
 393 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
 394                                  struct btrfs_ioctl_vol_args)
 395 #endif
 396
 397 #ifndef BTRFS_IOC_RESIZE
 398 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
 399                                  struct btrfs_ioctl_vol_args)
 400 #endif
 401
 402 #ifndef BTRFS_IOC_CLONE
 403 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
 404 #endif
 405
 406 #ifndef BTRFS_IOC_CLONE_RANGE
 407 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
 408                                  struct btrfs_ioctl_clone_range_args)
 409 #endif
 410
 411 #ifndef BTRFS_IOC_SUBVOL_CREATE
 412 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
 413                                  struct btrfs_ioctl_vol_args)
 414 #endif
 415
 416 #ifndef BTRFS_IOC_SNAP_DESTROY
 417 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
 418                                  struct btrfs_ioctl_vol_args)
 419 #endif
 420
 421 #ifndef BTRFS_IOC_TREE_SEARCH
 422 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
 423                                  struct btrfs_ioctl_search_args)
 424 #endif
 425
 426 #ifndef BTRFS_IOC_INO_LOOKUP
 427 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
 428                                  struct btrfs_ioctl_ino_lookup_args)
 429 #endif
 430
 431 #ifndef BTRFS_IOC_SNAP_CREATE_V2
 432 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
 433                                  struct btrfs_ioctl_vol_args_v2)
 434 #endif
 435
 436 #ifndef BTRFS_IOC_SUBVOL_GETFLAGS
 437 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
 438 #endif
 439
 440 #ifndef BTRFS_IOC_SUBVOL_SETFLAGS
 441 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
 442 #endif
 443
 444 #ifndef BTRFS_IOC_DEV_INFO
 445 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
 446                                  struct btrfs_ioctl_dev_info_args)
 447 #endif
 448
 449 #ifndef BTRFS_IOC_FS_INFO
 450 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
 451                                  struct btrfs_ioctl_fs_info_args)
 452 #endif
 453
 454 #ifndef BTRFS_IOC_DEVICES_READY
 455 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
 456                                  struct btrfs_ioctl_vol_args)
 457 #endif
 458
 459 #ifndef BTRFS_IOC_QUOTA_CTL
 460 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
 461                                struct btrfs_ioctl_quota_ctl_args)
 462 #endif
 463
 464 #ifndef BTRFS_IOC_QGROUP_LIMIT
 465 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
 466                                struct btrfs_ioctl_qgroup_limit_args)
 467 #endif
 468
 469 #ifndef BTRFS_FIRST_FREE_OBJECTID
 470 #define BTRFS_FIRST_FREE_OBJECTID 256
 471 #endif
 472
 473 #ifndef BTRFS_LAST_FREE_OBJECTID
 474 #define BTRFS_LAST_FREE_OBJECTID -256ULL
 475 #endif
 476
 477 #ifndef BTRFS_ROOT_TREE_OBJECTID
 478 #define BTRFS_ROOT_TREE_OBJECTID 1
 479 #endif
 480
 481 #ifndef BTRFS_QUOTA_TREE_OBJECTID
 482 #define BTRFS_QUOTA_TREE_OBJECTID 8ULL
 483 #endif
 484
 485 #ifndef BTRFS_ROOT_ITEM_KEY
 486 #define BTRFS_ROOT_ITEM_KEY 132
 487 #endif
 488
 489 #ifndef BTRFS_QGROUP_STATUS_KEY
 490 #define BTRFS_QGROUP_STATUS_KEY 240
 491 #endif
 492
 493 #ifndef BTRFS_QGROUP_INFO_KEY
 494 #define BTRFS_QGROUP_INFO_KEY 242
 495 #endif
 496
 497 #ifndef BTRFS_QGROUP_LIMIT_KEY
 498 #define BTRFS_QGROUP_LIMIT_KEY 244
 499 #endif
 500
 501 #ifndef BTRFS_QGROUP_RELATION_KEY
 502 #define BTRFS_QGROUP_RELATION_KEY 246
 503 #endif
 504
 505 #ifndef BTRFS_ROOT_BACKREF_KEY
 506 #define BTRFS_ROOT_BACKREF_KEY 144
 507 #endif
 508
 509 #ifndef BTRFS_SUPER_MAGIC
 510 #define BTRFS_SUPER_MAGIC 0x9123683E
 511 #endif
 512
 513 #ifndef CGROUP_SUPER_MAGIC
 514 #define CGROUP_SUPER_MAGIC 0x27e0eb
 515 #endif
 516
 517 #ifndef TMPFS_MAGIC
 518 #define TMPFS_MAGIC 0x01021994
 519 #endif
 520
 521 #ifndef MS_MOVE
 522 #define MS_MOVE 8192
 523 #endif
 524
 525 #ifndef MS_PRIVATE
 526 #define MS_PRIVATE  (1 << 18)
 527 #endif
 528
 529 #if !HAVE_DECL_GETTID
 530 static inline pid_t gettid(void) {
 531         return (pid_t) syscall(SYS_gettid);
 532 }
 533 #endif
 534
 535 #ifndef SCM_SECURITY
 536 #define SCM_SECURITY 0x03
 537 #endif
 538
 539 #ifndef MS_STRICTATIME
 540 #define MS_STRICTATIME (1<<24)
 541 #endif
 542
 543 #ifndef MS_REC
 544 #define MS_REC 16384
 545 #endif
 546
 547 #ifndef MS_SHARED
 548 #define MS_SHARED (1<<20)
 549 #endif
 550
 551 #ifndef PR_SET_NO_NEW_PRIVS
 552 #define PR_SET_NO_NEW_PRIVS 38
 553 #endif
 554
 555 #ifndef PR_SET_CHILD_SUBREAPER
 556 #define PR_SET_CHILD_SUBREAPER 36
 557 #endif
 558
 559 #ifndef MAX_HANDLE_SZ
 560 #define MAX_HANDLE_SZ 128
 561 #endif
 562
 563 #ifndef __NR_name_to_handle_at
 564 #  if defined(__x86_64__)
 565 #    define __NR_name_to_handle_at 303
 566 #  elif defined(__i386__)
 567 #    define __NR_name_to_handle_at 341
 568 #  elif defined(__arm__)
 569 #    define __NR_name_to_handle_at 370
 570 #  elif defined(__powerpc__)
 571 #    define __NR_name_to_handle_at 345
 572 #  else
 573 #    error "__NR_name_to_handle_at is not defined"
 574 #  endif
 575 #endif
 576
 577 #if !HAVE_DECL_NAME_TO_HANDLE_AT
 578 struct file_handle {
 579         unsigned int handle_bytes;
 580         int handle_type;
 581         unsigned char f_handle[0];
 582 };
 583
 584 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
 585         return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
 586 }
 587 #endif
 588
 589 #ifndef HAVE_SECURE_GETENV
 590 #  ifdef HAVE___SECURE_GETENV
 591 #    define secure_getenv __secure_getenv
 592 #  else
 593 #    error "neither secure_getenv nor __secure_getenv are available"
 594 #  endif
 595 #endif
 596
 597 #ifndef CIFS_MAGIC_NUMBER
 598 #  define CIFS_MAGIC_NUMBER 0xFF534D42
 599 #endif
 600
 601 #ifndef TFD_TIMER_CANCEL_ON_SET
 602 #  define TFD_TIMER_CANCEL_ON_SET (1 << 1)
 603 #endif
 604
 605 #ifndef SO_REUSEPORT
 606 #  define SO_REUSEPORT 15
 607 #endif
 608
 609 #ifndef EVIOCREVOKE
 610 #  define EVIOCREVOKE _IOW('E', 0x91, int)
 611 #endif
 612
 613 #ifndef DRM_IOCTL_SET_MASTER
 614 #  define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
 615 #endif
 616
 617 #ifndef DRM_IOCTL_DROP_MASTER
 618 #  define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
 619 #endif
 620
 621 #if defined(__i386__) || defined(__x86_64__)
 622
 623 /* The precise definition of __O_TMPFILE is arch specific, so let's
 624  * just define this on x86 where we know the value. */
 625
 626 #ifndef __O_TMPFILE
 627 #define __O_TMPFILE     020000000
 628 #endif
 629
 630 /* a horrid kludge trying to make sure that this will fail on old kernels */
 631 #ifndef O_TMPFILE
 632 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
 633 #endif
 634
 635 #endif
 636
 637 #ifndef __NR_setns
 638 #  if defined(__x86_64__)
 639 #    define __NR_setns 308
 640 #  elif defined(__i386__)
 641 #    define __NR_setns 346
 642 #  else
 643 #    error "__NR_setns is not defined"
 644 #  endif
 645 #endif
 646
 647 #if !HAVE_DECL_SETNS
 648 static inline int setns(int fd, int nstype) {
 649         return syscall(__NR_setns, fd, nstype);
 650 }
 651 #endif
 652
 653 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
 654 #define LO_FLAGS_PARTSCAN 8
 655 #endif
 656
 657 #ifndef LOOP_CTL_REMOVE
 658 #define LOOP_CTL_REMOVE 0x4C81
 659 #endif
 660
 661 #ifndef LOOP_CTL_GET_FREE
 662 #define LOOP_CTL_GET_FREE 0x4C82
 663 #endif
 664
 665 #if !HAVE_DECL_IFLA_INET6_ADDR_GEN_MODE
 666 #define IFLA_INET6_UNSPEC 0
 667 #define IFLA_INET6_FLAGS 1
 668 #define IFLA_INET6_CONF 2
 669 #define IFLA_INET6_STATS 3
 670 #define IFLA_INET6_MCAST 4
 671 #define IFLA_INET6_CACHEINFO 5
 672 #define IFLA_INET6_ICMP6STATS 6
 673 #define IFLA_INET6_TOKEN 7
 674 #define IFLA_INET6_ADDR_GEN_MODE 8
 675 #define __IFLA_INET6_MAX 9
 676
 677 #define IFLA_INET6_MAX  (__IFLA_INET6_MAX - 1)
 678
 679 #define IN6_ADDR_GEN_MODE_EUI64 0
 680 #define IN6_ADDR_GEN_MODE_NONE 1
 681 #endif
 682
 683 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
 684 #define IFLA_MACVLAN_UNSPEC 0
 685 #define IFLA_MACVLAN_MODE 1
 686 #define IFLA_MACVLAN_FLAGS 2
 687 #define __IFLA_MACVLAN_MAX 3
 688
 689 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
 690 #endif
 691
 692 #if !HAVE_DECL_IFLA_IPVLAN_MODE
 693 #define IFLA_IPVLAN_UNSPEC 0
 694 #define IFLA_IPVLAN_MODE 1
 695 #define __IFLA_IPVLAN_MAX 2
 696
 697 #define IFLA_IPVLAN_MAX (__IFLA_IPVLAN_MAX - 1)
 698
 699 #define IPVLAN_MODE_L2 0
 700 #define IPVLAN_MODE_L3 1
 701 #define IPVLAN_MAX 2
 702 #endif
 703
 704 #if !HAVE_DECL_IFLA_VTI_REMOTE
 705 #define IFLA_VTI_UNSPEC 0
 706 #define IFLA_VTI_LINK 1
 707 #define IFLA_VTI_IKEY 2
 708 #define IFLA_VTI_OKEY 3
 709 #define IFLA_VTI_LOCAL 4
 710 #define IFLA_VTI_REMOTE 5
 711 #define __IFLA_VTI_MAX 6
 712
 713 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
 714 #endif
 715
 716 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
 717 #undef IFLA_PROMISCUITY
 718 #define IFLA_PROMISCUITY 30
 719 #define IFLA_NUM_TX_QUEUES 31
 720 #define IFLA_NUM_RX_QUEUES 32
 721 #define IFLA_CARRIER 33
 722 #define IFLA_PHYS_PORT_ID 34
 723 #define __IFLA_MAX 35
 724
 725 #define IFLA_MAX (__IFLA_MAX - 1)
 726 #endif
 727
 728 #if !HAVE_DECL_IFLA_BOND_AD_INFO
 729 #define IFLA_BOND_UNSPEC 0
 730 #define IFLA_BOND_MODE 1
 731 #define IFLA_BOND_ACTIVE_SLAVE 2
 732 #define IFLA_BOND_MIIMON 3
 733 #define IFLA_BOND_UPDELAY 4
 734 #define IFLA_BOND_DOWNDELAY 5
 735 #define IFLA_BOND_USE_CARRIER 6
 736 #define IFLA_BOND_ARP_INTERVAL 7
 737 #define IFLA_BOND_ARP_IP_TARGET 8
 738 #define IFLA_BOND_ARP_VALIDATE 9
 739 #define IFLA_BOND_ARP_ALL_TARGETS 10
 740 #define IFLA_BOND_PRIMARY 11
 741 #define IFLA_BOND_PRIMARY_RESELECT 12
 742 #define IFLA_BOND_FAIL_OVER_MAC 13
 743 #define IFLA_BOND_XMIT_HASH_POLICY 14
 744 #define IFLA_BOND_RESEND_IGMP 15
 745 #define IFLA_BOND_NUM_PEER_NOTIF 16
 746 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
 747 #define IFLA_BOND_MIN_LINKS 18
 748 #define IFLA_BOND_LP_INTERVAL 19
 749 #define IFLA_BOND_PACKETS_PER_SLAVE 20
 750 #define IFLA_BOND_AD_LACP_RATE 21
 751 #define IFLA_BOND_AD_SELECT 22
 752 #define IFLA_BOND_AD_INFO 23
 753 #define __IFLA_BOND_MAX 24
 754
 755 #define IFLA_BOND_MAX   (__IFLA_BOND_MAX - 1)
 756 #endif
 757
 758 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
 759 #define IFLA_VLAN_UNSPEC 0
 760 #define IFLA_VLAN_ID 1
 761 #define IFLA_VLAN_FLAGS 2
 762 #define IFLA_VLAN_EGRESS_QOS 3
 763 #define IFLA_VLAN_INGRESS_QOS 4
 764 #define IFLA_VLAN_PROTOCOL 5
 765 #define __IFLA_VLAN_MAX 6
 766
 767 #define IFLA_VLAN_MAX   (__IFLA_VLAN_MAX - 1)
 768 #endif
 769
 770 #if !HAVE_DECL_IFLA_VXLAN_REMCSUM_NOPARTIAL
 771 #define IFLA_VXLAN_UNSPEC 0
 772 #define IFLA_VXLAN_ID 1
 773 #define IFLA_VXLAN_GROUP 2
 774 #define IFLA_VXLAN_LINK 3
 775 #define IFLA_VXLAN_LOCAL 4
 776 #define IFLA_VXLAN_TTL 5
 777 #define IFLA_VXLAN_TOS 6
 778 #define IFLA_VXLAN_LEARNING 7
 779 #define IFLA_VXLAN_AGEING 8
 780 #define IFLA_VXLAN_LIMIT 9
 781 #define IFLA_VXLAN_PORT_RANGE 10
 782 #define IFLA_VXLAN_PROXY 11
 783 #define IFLA_VXLAN_RSC 12
 784 #define IFLA_VXLAN_L2MISS 13
 785 #define IFLA_VXLAN_L3MISS 14
 786 #define IFLA_VXLAN_PORT 15
 787 #define IFLA_VXLAN_GROUP6 16
 788 #define IFLA_VXLAN_LOCAL6 17
 789 #define IFLA_VXLAN_UDP_CSUM 18
 790 #define IFLA_VXLAN_UDP_ZERO_CSUM6_TX 19
 791 #define IFLA_VXLAN_UDP_ZERO_CSUM6_RX 20
 792 #define IFLA_VXLAN_REMCSUM_TX 21
 793 #define IFLA_VXLAN_REMCSUM_RX 22
 794 #define IFLA_VXLAN_GBP 23
 795 #define IFLA_VXLAN_REMCSUM_NOPARTIAL 24
 796 #define __IFLA_VXLAN_MAX 25
 797
 798 #define IFLA_VXLAN_MAX  (__IFLA_VXLAN_MAX - 1)
 799 #endif
 800
 801 #if !HAVE_DECL_IFLA_IPTUN_ENCAP_DPORT
 802 #define IFLA_IPTUN_UNSPEC 0
 803 #define IFLA_IPTUN_LINK 1
 804 #define IFLA_IPTUN_LOCAL 2
 805 #define IFLA_IPTUN_REMOTE 3
 806 #define IFLA_IPTUN_TTL 4
 807 #define IFLA_IPTUN_TOS 5
 808 #define IFLA_IPTUN_ENCAP_LIMIT 6
 809 #define IFLA_IPTUN_FLOWINFO 7
 810 #define IFLA_IPTUN_FLAGS 8
 811 #define IFLA_IPTUN_PROTO 9
 812 #define IFLA_IPTUN_PMTUDISC 10
 813 #define IFLA_IPTUN_6RD_PREFIX 11
 814 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
 815 #define IFLA_IPTUN_6RD_PREFIXLEN 13
 816 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
 817 #define IFLA_IPTUN_ENCAP_TYPE 15
 818 #define IFLA_IPTUN_ENCAP_FLAGS 16
 819 #define IFLA_IPTUN_ENCAP_SPORT 17
 820 #define IFLA_IPTUN_ENCAP_DPORT 18
 821
 822 #define __IFLA_IPTUN_MAX 19
 823
 824 #define IFLA_IPTUN_MAX  (__IFLA_IPTUN_MAX - 1)
 825 #endif
 826
 827 #if !HAVE_DECL_IFLA_GRE_ENCAP_DPORT
 828 #define IFLA_GRE_UNSPEC 0
 829 #define IFLA_GRE_LINK 1
 830 #define IFLA_GRE_IFLAGS 2
 831 #define IFLA_GRE_OFLAGS 3
 832 #define IFLA_GRE_IKEY 4
 833 #define IFLA_GRE_OKEY 5
 834 #define IFLA_GRE_LOCAL 6
 835 #define IFLA_GRE_REMOTE 7
 836 #define IFLA_GRE_TTL 8
 837 #define IFLA_GRE_TOS 9
 838 #define IFLA_GRE_PMTUDISC 10
 839 #define IFLA_GRE_ENCAP_LIMIT 11
 840 #define IFLA_GRE_FLOWINFO 12
 841 #define IFLA_GRE_FLAGS 13
 842 #define IFLA_GRE_ENCAP_TYPE 14
 843 #define IFLA_GRE_ENCAP_FLAGS 15
 844 #define IFLA_GRE_ENCAP_SPORT 16
 845 #define IFLA_GRE_ENCAP_DPORT 17
 846
 847 #define __IFLA_GRE_MAX 18
 848
 849 #define IFLA_GRE_MAX  (__IFLA_GRE_MAX - 1)
 850 #endif
 851
 852 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
 853 #define IFLA_BRIDGE_FLAGS 0
 854 #define IFLA_BRIDGE_MODE 1
 855 #define IFLA_BRIDGE_VLAN_INFO 2
 856 #define __IFLA_BRIDGE_MAX 3
 857
 858 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
 859 #endif
 860
 861 #if !HAVE_DECL_IFLA_BR_PRIORITY
 862 #define IFLA_BR_UNSPEC 0
 863 #define IFLA_BR_FORWARD_DELAY 1
 864 #define IFLA_BR_HELLO_TIME 2
 865 #define IFLA_BR_MAX_AGE 3
 866 #define IFLA_BR_AGEING_TIME 4
 867 #define IFLA_BR_STP_STATE 5
 868 #define IFLA_BR_PRIORITY 6
 869 #define __IFLA_BR_MAX 7
 870
 871 #define IFLA_BR_MAX (__IFLA_BR_MAX - 1)
 872 #endif
 873
 874 #if !HAVE_DECL_IFLA_BRPORT_LEARNING_SYNC
 875 #define IFLA_BRPORT_UNSPEC 0
 876 #define IFLA_BRPORT_STATE 1
 877 #define IFLA_BRPORT_PRIORITY 2
 878 #define IFLA_BRPORT_COST 3
 879 #define IFLA_BRPORT_MODE 4
 880 #define IFLA_BRPORT_GUARD 5
 881 #define IFLA_BRPORT_PROTECT 6
 882 #define IFLA_BRPORT_FAST_LEAVE 7
 883 #define IFLA_BRPORT_LEARNING 8
 884 #define IFLA_BRPORT_UNICAST_FLOOD 9
 885 #define IFLA_BRPORT_PROXYARP 10
 886 #define IFLA_BRPORT_LEARNING_SYNC 11
 887 #define __IFLA_BRPORT_MAX 12
 888
 889 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
 890 #endif
 891
 892 #if !HAVE_DECL_NDA_IFINDEX
 893 #define NDA_UNSPEC 0
 894 #define NDA_DST 1
 895 #define NDA_LLADDR 2
 896 #define NDA_CACHEINFO 3
 897 #define NDA_PROBES 4
 898 #define NDA_VLAN 5
 899 #define NDA_PORT 6
 900 #define NDA_VNI 7
 901 #define NDA_IFINDEX 8
 902 #define __NDA_MAX 9
 903
 904 #define NDA_MAX (__NDA_MAX - 1)
 905 #endif
 906
 907 #ifndef RTA_PREF
 908 #define RTA_PREF 20
 909 #endif
 910
 911 #ifndef IPV6_UNICAST_IF
 912 #define IPV6_UNICAST_IF 76
 913 #endif
 914
 915 #ifndef IFF_MULTI_QUEUE
 916 #define IFF_MULTI_QUEUE 0x100
 917 #endif
 918
 919 #ifndef IFF_LOWER_UP
 920 #define IFF_LOWER_UP 0x10000
 921 #endif
 922
 923 #ifndef IFF_DORMANT
 924 #define IFF_DORMANT 0x20000
 925 #endif
 926
 927 #ifndef BOND_XMIT_POLICY_ENCAP23
 928 #define BOND_XMIT_POLICY_ENCAP23 3
 929 #endif
 930
 931 #ifndef BOND_XMIT_POLICY_ENCAP34
 932 #define BOND_XMIT_POLICY_ENCAP34 4
 933 #endif
 934
 935 #ifndef NET_ADDR_RANDOM
 936 #  define NET_ADDR_RANDOM 1
 937 #endif
 938
 939 #ifndef NET_NAME_UNKNOWN
 940 #  define NET_NAME_UNKNOWN 0
 941 #endif
 942
 943 #ifndef NET_NAME_ENUM
 944 #  define NET_NAME_ENUM 1
 945 #endif
 946
 947 #ifndef NET_NAME_PREDICTABLE
 948 #  define NET_NAME_PREDICTABLE 2
 949 #endif
 950
 951 #ifndef NET_NAME_USER
 952 #  define NET_NAME_USER 3
 953 #endif
 954
 955 #ifndef NET_NAME_RENAMED
 956 #  define NET_NAME_RENAMED 4
 957 #endif
 958
 959 #ifndef BPF_XOR
 960 #  define BPF_XOR 0xa0
 961 #endif
 962
 963 /* Note that LOOPBACK_IFINDEX is currently not exported by the
 964  * kernel/glibc, but hardcoded internally by the kernel.  However, as
 965  * it is exported to userspace indirectly via rtnetlink and the
 966  * ioctls, and made use of widely we define it here too, in a way that
 967  * is compatible with the kernel's internal definition. */
 968 #ifndef LOOPBACK_IFINDEX
 969 #define LOOPBACK_IFINDEX 1
 970 #endif
 971
 972 #if !HAVE_DECL_IFA_FLAGS
 973 #define IFA_FLAGS 8
 974 #endif
 975
 976 #ifndef IFA_F_MANAGETEMPADDR
 977 #define IFA_F_MANAGETEMPADDR 0x100
 978 #endif
 979
 980 #ifndef IFA_F_NOPREFIXROUTE
 981 #define IFA_F_NOPREFIXROUTE 0x200
 982 #endif
 983
 984 #ifndef MAX_AUDIT_MESSAGE_LENGTH
 985 #define MAX_AUDIT_MESSAGE_LENGTH 8970
 986 #endif
 987
 988 #ifndef AUDIT_NLGRP_MAX
 989 #define AUDIT_NLGRP_READLOG 1
 990 #endif
 991
 992 #ifndef CAP_MAC_OVERRIDE
 993 #define CAP_MAC_OVERRIDE 32
 994 #endif
 995
 996 #ifndef CAP_MAC_ADMIN
 997 #define CAP_MAC_ADMIN 33
 998 #endif
 999
1000 #ifndef CAP_SYSLOG
1001 #define CAP_SYSLOG 34
1002 #endif
1003
1004 #ifndef CAP_WAKE_ALARM
1005 #define CAP_WAKE_ALARM 35
1006 #endif
1007
1008 #ifndef CAP_BLOCK_SUSPEND
1009 #define CAP_BLOCK_SUSPEND 36
1010 #endif
1011
1012 #ifndef CAP_AUDIT_READ
1013 #define CAP_AUDIT_READ 37
1014 #endif
1015
1016 static inline int raw_clone(unsigned long flags, void *child_stack) {
1017 #if defined(__s390__) || defined(__CRIS__)
1018         /* On s390 and cris the order of the first and second arguments
1019          * of the raw clone() system call is reversed. */
1020         return (int) syscall(__NR_clone, child_stack, flags);
1021 #else
1022         return (int) syscall(__NR_clone, flags, child_stack);
1023 #endif
1024 }
1025
1026 static inline pid_t raw_getpid(void) {
1027 #if defined(__alpha__)
1028         return (pid_t) syscall(__NR_getxpid);
1029 #else
1030         return (pid_t) syscall(__NR_getpid);
1031 #endif
1032 }
1033
1034 #if !HAVE_DECL_RENAMEAT2
1035
1036 #ifndef __NR_renameat2
1037 #  if defined __x86_64__
1038 #    define __NR_renameat2 316
1039 #  elif defined __arm__
1040 #    define __NR_renameat2 382
1041 #  elif defined _MIPS_SIM
1042 #    if _MIPS_SIM == _MIPS_SIM_ABI32
1043 #      define __NR_renameat2 4351
1044 #    endif
1045 #    if _MIPS_SIM == _MIPS_SIM_NABI32
1046 #      define __NR_renameat2 6315
1047 #    endif
1048 #    if _MIPS_SIM == _MIPS_SIM_ABI64
1049 #      define __NR_renameat2 5311
1050 #    endif
1051 #  elif defined __i386__
1052 #    define __NR_renameat2 353
1053 #  else
1054 #    warning "__NR_renameat2 unknown for your architecture"
1055 #    define __NR_renameat2 0xffffffff
1056 #  endif
1057 #endif
1058
1059 static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
1060         return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
1061 }
1062 #endif
1063
1064 #ifndef RENAME_NOREPLACE
1065 #define RENAME_NOREPLACE (1 << 0)
1066 #endif
1067
1068 #if !HAVE_DECL_KCMP
1069 static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
1070 #if defined(__NR_kcmp)
1071         return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
1072 #else
1073         errno = ENOSYS;
1074         return -1;
1075 #endif
1076 }
1077 #endif
1078
1079 #ifndef KCMP_FILE
1080 #define KCMP_FILE 0
1081 #endif
1082
1083 #ifndef INPUT_PROP_POINTING_STICK
1084 #define INPUT_PROP_POINTING_STICK 0x05
1085 #endif
1086
1087 #ifndef INPUT_PROP_ACCELEROMETER
1088 #define INPUT_PROP_ACCELEROMETER  0x06
1089 #endif
1090
1091 #if !HAVE_DECL_KEY_SERIAL_T
1092 typedef int32_t key_serial_t;
1093 #endif
1094
1095 #if !HAVE_DECL_KEYCTL
1096 static inline long keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4,unsigned long arg5) {
1097 #if defined(__NR_keyctl)
1098         return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
1099 #else
1100         errno = ENOSYS;
1101         return -1;
1102 #endif
1103 }
1104
1105 static inline key_serial_t add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
1106 #if defined (__NR_add_key)
1107         return syscall(__NR_add_key, type, description, payload, plen, ringid);
1108 #else
1109         errno = ENOSYS;
1110         return -1;
1111 #endif
1112 }
1113
1114 static inline key_serial_t request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
1115 #if defined (__NR_request_key)
1116         return syscall(__NR_request_key, type, description, callout_info, destringid);
1117 #else
1118         errno = ENOSYS;
1119         return -1;
1120 #endif
1121 }
1122 #endif
1123
1124 #ifndef KEYCTL_READ
1125 #define KEYCTL_READ 11
1126 #endif
1127
1128 #ifndef KEYCTL_SET_TIMEOUT
1129 #define KEYCTL_SET_TIMEOUT 15
1130 #endif
1131
1132 #ifndef KEY_SPEC_USER_KEYRING
1133 #define KEY_SPEC_USER_KEYRING -4
1134 #endif
1135
1136 #ifndef PR_CAP_AMBIENT
1137 #define PR_CAP_AMBIENT 47
1138 #endif
1139
1140 #ifndef PR_CAP_AMBIENT_IS_SET
1141 #define PR_CAP_AMBIENT_IS_SET 1
1142 #endif
1143
1144 #ifndef PR_CAP_AMBIENT_RAISE
1145 #define PR_CAP_AMBIENT_RAISE 2
1146 #endif
1147
1148 #ifndef PR_CAP_AMBIENT_CLEAR_ALL
1149 #define PR_CAP_AMBIENT_CLEAR_ALL 4
1150 #endif
1151
1152 /* The following two defines are actually available in the kernel headers for longer, but we define them here anyway,
1153  * since that makes it easier to use them in conjunction with the glibc net/if.h header which conflicts with
1154  * linux/if.h. */
1155 #ifndef IF_OPER_UNKNOWN
1156 #define IF_OPER_UNKNOWN 0
1157 #endif
1158
1159 #ifndef IF_OPER_UP
1160 #define IF_OPER_UP 6
1161
1162 #ifndef HAVE_DECL_CHAR32_T
1163 #define char32_t uint32_t
1164 #endif
1165
1166 #ifndef HAVE_DECL_CHAR16_T
1167 #define char16_t uint16_t
1168 #endif
1169
1170 #endif