1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
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.
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.
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/>.
24 /* Missing glibc definitions to access certain kernel APIs */
26 #include <sys/resource.h>
27 #include <sys/syscall.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>
45 #include <asm/sgidefs.h>
49 #define RLIMIT_RTTIME 15
52 /* If RLIMIT_RTTIME is not defined, then we cannot use RLIMIT_NLIMITS as is */
53 #define _RLIMIT_MAX (RLIMIT_RTTIME+1 > RLIMIT_NLIMITS ? RLIMIT_RTTIME+1 : RLIMIT_NLIMITS)
55 #ifndef F_LINUX_SPECIFIC_BASE
56 #define F_LINUX_SPECIFIC_BASE 1024
60 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
64 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
68 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
69 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
71 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
72 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
73 #define F_SEAL_GROW 0x0004 /* prevent file from growing */
74 #define F_SEAL_WRITE 0x0008 /* prevent writes */
77 #ifndef MFD_ALLOW_SEALING
78 #define MFD_ALLOW_SEALING 0x0002U
82 #define MFD_CLOEXEC 0x0001U
86 #define IP_FREEBIND 15
89 #ifndef OOM_SCORE_ADJ_MIN
90 #define OOM_SCORE_ADJ_MIN (-1000)
93 #ifndef OOM_SCORE_ADJ_MAX
94 #define OOM_SCORE_ADJ_MAX 1000
97 #ifndef AUDIT_SERVICE_START
98 #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
101 #ifndef AUDIT_SERVICE_STOP
102 #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
106 #define TIOCVHANGUP 0x5437
109 #ifndef IP_TRANSPARENT
110 #define IP_TRANSPARENT 19
114 #define SOL_NETLINK 270
117 #if !HAVE_DECL_PIVOT_ROOT
118 static inline int pivot_root(const char *new_root, const char *put_old) {
119 return syscall(SYS_pivot_root, new_root, put_old);
123 #ifndef __NR_memfd_create
124 # if defined __x86_64__
125 # define __NR_memfd_create 319
126 # elif defined __arm__
127 # define __NR_memfd_create 385
128 # elif defined _MIPS_SIM
129 # if _MIPS_SIM == _MIPS_SIM_ABI32
130 # define __NR_memfd_create 4354
132 # if _MIPS_SIM == _MIPS_SIM_NABI32
133 # define __NR_memfd_create 6318
135 # if _MIPS_SIM == _MIPS_SIM_ABI64
136 # define __NR_memfd_create 5314
138 # elif defined __i386__
139 # define __NR_memfd_create 356
141 # warning "__NR_memfd_create unknown for your architecture"
142 # define __NR_memfd_create 0xffffffff
146 #ifndef HAVE_MEMFD_CREATE
147 static inline int memfd_create(const char *name, unsigned int flags) {
148 return syscall(__NR_memfd_create, name, flags);
152 #ifndef __NR_getrandom
153 # if defined __x86_64__
154 # define __NR_getrandom 318
155 # elif defined(__i386__)
156 # define __NR_getrandom 355
157 # elif defined(__arm__) || defined(__aarch64__)
158 # define __NR_getrandom 384
159 # elif defined(__ia64__)
160 # define __NR_getrandom 1339
161 # elif defined(__m68k__)
162 # define __NR_getrandom 352
163 # elif defined(__s390x__)
164 # define __NR_getrandom 349
166 # warning "__NR_getrandom unknown for your architecture"
167 # define __NR_getrandom 0xffffffff
171 #if !HAVE_DECL_GETRANDOM
172 static inline int getrandom(void *buffer, size_t count, unsigned flags) {
173 return syscall(__NR_getrandom, buffer, count, flags);
177 #ifndef GRND_NONBLOCK
178 #define GRND_NONBLOCK 0x0001
182 #define GRND_RANDOM 0x0002
185 #ifndef BTRFS_IOCTL_MAGIC
186 #define BTRFS_IOCTL_MAGIC 0x94
189 #ifndef BTRFS_PATH_NAME_MAX
190 #define BTRFS_PATH_NAME_MAX 4087
193 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
194 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
197 #ifndef BTRFS_FSID_SIZE
198 #define BTRFS_FSID_SIZE 16
201 #ifndef BTRFS_UUID_SIZE
202 #define BTRFS_UUID_SIZE 16
205 #ifndef HAVE_LINUX_BTRFS_H
206 struct btrfs_ioctl_vol_args {
208 char name[BTRFS_PATH_NAME_MAX + 1];
211 struct btrfs_ioctl_dev_info_args {
212 uint64_t devid; /* in/out */
213 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
214 uint64_t bytes_used; /* out */
215 uint64_t total_bytes; /* out */
216 uint64_t unused[379]; /* pad to 4k */
217 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
220 struct btrfs_ioctl_fs_info_args {
221 uint64_t max_id; /* out */
222 uint64_t num_devices; /* out */
223 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
224 uint64_t reserved[124]; /* pad to 1k */
228 #ifndef BTRFS_IOC_DEFRAG
229 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
230 struct btrfs_ioctl_vol_args)
233 #ifndef BTRFS_IOC_DEV_INFO
234 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
235 struct btrfs_ioctl_dev_info_args)
238 #ifndef BTRFS_IOC_FS_INFO
239 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
240 struct btrfs_ioctl_fs_info_args)
243 #ifndef BTRFS_IOC_DEVICES_READY
244 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
245 struct btrfs_ioctl_vol_args)
248 #ifndef BTRFS_SUPER_MAGIC
249 #define BTRFS_SUPER_MAGIC 0x9123683E
257 #define MS_PRIVATE (1 << 18)
260 #if !HAVE_DECL_GETTID
261 static inline pid_t gettid(void) {
262 return (pid_t) syscall(SYS_gettid);
267 #define SCM_SECURITY 0x03
270 #ifndef MS_STRICTATIME
271 #define MS_STRICTATIME (1<<24)
279 #define MS_SHARED (1<<20)
282 #ifndef PR_SET_NO_NEW_PRIVS
283 #define PR_SET_NO_NEW_PRIVS 38
286 #ifndef PR_SET_CHILD_SUBREAPER
287 #define PR_SET_CHILD_SUBREAPER 36
290 #ifndef MAX_HANDLE_SZ
291 #define MAX_HANDLE_SZ 128
294 #ifndef __NR_name_to_handle_at
295 # if defined(__x86_64__)
296 # define __NR_name_to_handle_at 303
297 # elif defined(__i386__)
298 # define __NR_name_to_handle_at 341
299 # elif defined(__arm__)
300 # define __NR_name_to_handle_at 370
301 # elif defined(__powerpc__)
302 # define __NR_name_to_handle_at 345
304 # error "__NR_name_to_handle_at is not defined"
308 #if !HAVE_DECL_NAME_TO_HANDLE_AT
310 unsigned int handle_bytes;
312 unsigned char f_handle[0];
315 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
316 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
320 #ifndef HAVE_SECURE_GETENV
321 # ifdef HAVE___SECURE_GETENV
322 # define secure_getenv __secure_getenv
324 # error "neither secure_getenv nor __secure_getenv are available"
328 #ifndef CIFS_MAGIC_NUMBER
329 # define CIFS_MAGIC_NUMBER 0xFF534D42
332 #ifndef TFD_TIMER_CANCEL_ON_SET
333 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
337 # define SO_REUSEPORT 15
341 # define EVIOCREVOKE _IOW('E', 0x91, int)
344 #ifndef DRM_IOCTL_SET_MASTER
345 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
348 #ifndef DRM_IOCTL_DROP_MASTER
349 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
352 #if defined(__i386__) || defined(__x86_64__)
354 /* The precise definition of __O_TMPFILE is arch specific, so let's
355 * just define this on x86 where we know the value. */
358 #define __O_TMPFILE 020000000
361 /* a horrid kludge trying to make sure that this will fail on old kernels */
363 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
369 # if defined(__x86_64__)
370 # define __NR_setns 308
371 # elif defined(__i386__)
372 # define __NR_setns 346
374 # error "__NR_setns is not defined"
379 static inline int setns(int fd, int nstype) {
380 return syscall(__NR_setns, fd, nstype);
384 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
385 #define LO_FLAGS_PARTSCAN 8
388 #ifndef LOOP_CTL_REMOVE
389 #define LOOP_CTL_REMOVE 0x4C81
392 #ifndef LOOP_CTL_GET_FREE
393 #define LOOP_CTL_GET_FREE 0x4C82
396 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
397 #define IFLA_MACVLAN_UNSPEC 0
398 #define IFLA_MACVLAN_MODE 1
399 #define IFLA_MACVLAN_FLAGS 2
400 #define __IFLA_MACVLAN_MAX 3
402 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
405 #if !HAVE_DECL_IFLA_VTI_REMOTE
406 #define IFLA_VTI_UNSPEC 0
407 #define IFLA_VTI_LINK 1
408 #define IFLA_VTI_IKEY 2
409 #define IFLA_VTI_OKEY 3
410 #define IFLA_VTI_LOCAL 4
411 #define IFLA_VTI_REMOTE 5
412 #define __IFLA_VTI_MAX 6
414 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
417 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
418 #undef IFLA_PROMISCUITY
419 #define IFLA_PROMISCUITY 30
420 #define IFLA_NUM_TX_QUEUES 31
421 #define IFLA_NUM_RX_QUEUES 32
422 #define IFLA_CARRIER 33
423 #define IFLA_PHYS_PORT_ID 34
424 #define __IFLA_MAX 35
426 #define IFLA_MAX (__IFLA_MAX - 1)
429 #if !HAVE_DECL_IFLA_BOND_AD_INFO
430 #define IFLA_BOND_UNSPEC 0
431 #define IFLA_BOND_MODE 1
432 #define IFLA_BOND_ACTIVE_SLAVE 2
433 #define IFLA_BOND_MIIMON 3
434 #define IFLA_BOND_UPDELAY 4
435 #define IFLA_BOND_DOWNDELAY 5
436 #define IFLA_BOND_USE_CARRIER 6
437 #define IFLA_BOND_ARP_INTERVAL 7
438 #define IFLA_BOND_ARP_IP_TARGET 8
439 #define IFLA_BOND_ARP_VALIDATE 9
440 #define IFLA_BOND_ARP_ALL_TARGETS 10
441 #define IFLA_BOND_PRIMARY 11
442 #define IFLA_BOND_PRIMARY_RESELECT 12
443 #define IFLA_BOND_FAIL_OVER_MAC 13
444 #define IFLA_BOND_XMIT_HASH_POLICY 14
445 #define IFLA_BOND_RESEND_IGMP 15
446 #define IFLA_BOND_NUM_PEER_NOTIF 16
447 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
448 #define IFLA_BOND_MIN_LINKS 18
449 #define IFLA_BOND_LP_INTERVAL 19
450 #define IFLA_BOND_PACKETS_PER_SLAVE 20
451 #define IFLA_BOND_AD_LACP_RATE 21
452 #define IFLA_BOND_AD_SELECT 22
453 #define IFLA_BOND_AD_INFO 23
454 #define __IFLA_BOND_MAX 24
456 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
459 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
460 #define IFLA_VLAN_UNSPEC 0
461 #define IFLA_VLAN_ID 1
462 #define IFLA_VLAN_FLAGS 2
463 #define IFLA_VLAN_EGRESS_QOS 3
464 #define IFLA_VLAN_INGRESS_QOS 4
465 #define IFLA_VLAN_PROTOCOL 5
466 #define __IFLA_VLAN_MAX 6
468 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
471 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
472 #define IFLA_VXLAN_UNSPEC 0
473 #define IFLA_VXLAN_ID 1
474 #define IFLA_VXLAN_GROUP 2
475 #define IFLA_VXLAN_LINK 3
476 #define IFLA_VXLAN_LOCAL 4
477 #define IFLA_VXLAN_TTL 5
478 #define IFLA_VXLAN_TOS 6
479 #define IFLA_VXLAN_LEARNING 7
480 #define IFLA_VXLAN_AGEING 8
481 #define IFLA_VXLAN_LIMIT 9
482 #define IFLA_VXLAN_PORT_RANGE 10
483 #define IFLA_VXLAN_PROXY 11
484 #define IFLA_VXLAN_RSC 12
485 #define IFLA_VXLAN_L2MISS 13
486 #define IFLA_VXLAN_L3MISS 14
487 #define IFLA_VXLAN_PORT 15
488 #define IFLA_VXLAN_GROUP6 16
489 #define IFLA_VXLAN_LOCAL6 17
490 #define __IFLA_VXLAN_MAX 18
492 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
495 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
496 #define IFLA_IPTUN_UNSPEC 0
497 #define IFLA_IPTUN_LINK 1
498 #define IFLA_IPTUN_LOCAL 2
499 #define IFLA_IPTUN_REMOTE 3
500 #define IFLA_IPTUN_TTL 4
501 #define IFLA_IPTUN_TOS 5
502 #define IFLA_IPTUN_ENCAP_LIMIT 6
503 #define IFLA_IPTUN_FLOWINFO 7
504 #define IFLA_IPTUN_FLAGS 8
505 #define IFLA_IPTUN_PROTO 9
506 #define IFLA_IPTUN_PMTUDISC 10
507 #define IFLA_IPTUN_6RD_PREFIX 11
508 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
509 #define IFLA_IPTUN_6RD_PREFIXLEN 13
510 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
511 #define __IFLA_IPTUN_MAX 15
513 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
516 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
517 #define IFLA_BRIDGE_FLAGS 0
518 #define IFLA_BRIDGE_MODE 1
519 #define IFLA_BRIDGE_VLAN_INFO 2
520 #define __IFLA_BRIDGE_MAX 3
522 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
525 #if !HAVE_DECL_IFLA_BRPORT_UNICAST_FLOOD
526 #define IFLA_BRPORT_UNSPEC 0
527 #define IFLA_BRPORT_STATE 1
528 #define IFLA_BRPORT_PRIORITY 2
529 #define IFLA_BRPORT_COST 3
530 #define IFLA_BRPORT_MODE 4
531 #define IFLA_BRPORT_GUARD 5
532 #define IFLA_BRPORT_PROTECT 6
533 #define IFLA_BRPORT_FAST_LEAVE 7
534 #define IFLA_BRPORT_LEARNING 8
535 #define IFLA_BRPORT_UNICAST_FLOOD 9
536 #define __IFLA_BRPORT_MAX 10
538 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
541 #ifndef IPV6_UNICAST_IF
542 #define IPV6_UNICAST_IF 76
545 #ifndef IFF_MULTI_QUEUE
546 #define IFF_MULTI_QUEUE 0x100
550 #define IFF_LOWER_UP 0x10000
554 #define IFF_DORMANT 0x20000
557 #ifndef BOND_XMIT_POLICY_ENCAP23
558 #define BOND_XMIT_POLICY_ENCAP23 3
561 #ifndef BOND_XMIT_POLICY_ENCAP34
562 #define BOND_XMIT_POLICY_ENCAP34 4
565 #ifndef NET_ADDR_RANDOM
566 # define NET_ADDR_RANDOM 1
569 #ifndef NET_NAME_UNKNOWN
570 # define NET_NAME_UNKNOWN 0
573 #ifndef NET_NAME_ENUM
574 # define NET_NAME_ENUM 1
577 #ifndef NET_NAME_PREDICTABLE
578 # define NET_NAME_PREDICTABLE 2
581 #ifndef NET_NAME_USER
582 # define NET_NAME_USER 3
585 #ifndef NET_NAME_RENAMED
586 # define NET_NAME_RENAMED 4
590 # define BPF_XOR 0xa0
593 /* Note that LOOPBACK_IFINDEX is currently not exported by the
594 * kernel/glibc, but hardcoded internally by the kernel. However, as
595 * it is exported to userspace indirectly via rtnetlink and the
596 * ioctls, and made use of widely we define it here too, in a way that
597 * is compatible with the kernel's internal definition. */
598 #ifndef LOOPBACK_IFINDEX
599 #define LOOPBACK_IFINDEX 1
602 #ifndef MAX_AUDIT_MESSAGE_LENGTH
603 #define MAX_AUDIT_MESSAGE_LENGTH 8970
606 #ifndef AUDIT_NLGRP_MAX
607 #define AUDIT_NLGRP_READLOG 1