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>
44 #include <asm/sgidefs.h>
48 #define RLIMIT_RTTIME 15
51 /* If RLIMIT_RTTIME is not defined, then we cannot use RLIMIT_NLIMITS as is */
52 #define _RLIMIT_MAX (RLIMIT_RTTIME+1 > RLIMIT_NLIMITS ? RLIMIT_RTTIME+1 : RLIMIT_NLIMITS)
54 #ifndef F_LINUX_SPECIFIC_BASE
55 #define F_LINUX_SPECIFIC_BASE 1024
59 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
63 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
67 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
71 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
75 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
79 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
83 #define F_SEAL_GROW 0x0004 /* prevent file from growing */
87 #define F_SEAL_WRITE 0x0008 /* prevent writes */
90 #ifndef MFD_ALLOW_SEALING
91 #define MFD_ALLOW_SEALING 0x0002ULL
95 #define IP_FREEBIND 15
98 #ifndef OOM_SCORE_ADJ_MIN
99 #define OOM_SCORE_ADJ_MIN (-1000)
102 #ifndef OOM_SCORE_ADJ_MAX
103 #define OOM_SCORE_ADJ_MAX 1000
106 #ifndef AUDIT_SERVICE_START
107 #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
110 #ifndef AUDIT_SERVICE_STOP
111 #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
115 #define TIOCVHANGUP 0x5437
118 #ifndef IP_TRANSPARENT
119 #define IP_TRANSPARENT 19
123 #define SOL_NETLINK 270
126 #if !HAVE_DECL_PIVOT_ROOT
127 static inline int pivot_root(const char *new_root, const char *put_old) {
128 return syscall(SYS_pivot_root, new_root, put_old);
133 # ifndef __NR_fanotify_init
134 # define __NR_fanotify_init 300
136 # ifndef __NR_fanotify_mark
137 # define __NR_fanotify_mark 301
139 # ifndef __NR_memfd_create
140 # define __NR_memfd_create 319
142 #elif defined __arm__
143 # ifndef __NR_memfd_create
144 # define __NR_memfd_create 385
146 #elif defined _MIPS_SIM
147 # if _MIPS_SIM == _MIPS_SIM_ABI32
148 # ifndef __NR_fanotify_init
149 # define __NR_fanotify_init 4336
151 # ifndef __NR_fanotify_mark
152 # define __NR_fanotify_mark 4337
154 # elif _MIPS_SIM == _MIPS_SIM_NABI32
155 # ifndef __NR_fanotify_init
156 # define __NR_fanotify_init 6300
158 # ifndef __NR_fanotify_mark
159 # define __NR_fanotify_mark 6301
161 # elif _MIPS_SIM == _MIPS_SIM_ABI64
162 # ifndef __NR_fanotify_init
163 # define __NR_fanotify_init 5295
165 # ifndef __NR_fanotify_mark
166 # define __NR_fanotify_mark 5296
169 # ifndef __NR_memfd_create
170 # warning "__NR_memfd_create not yet defined for MIPS"
171 # define __NR_memfd_create 0xffffffff
174 # ifndef __NR_fanotify_init
175 # define __NR_fanotify_init 338
177 # ifndef __NR_fanotify_mark
178 # define __NR_fanotify_mark 339
180 # ifndef __NR_memfd_create
181 # define __NR_memfd_create 356
185 #ifndef HAVE_FANOTIFY_INIT
186 static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
187 return syscall(__NR_fanotify_init, flags, event_f_flags);
191 #ifndef HAVE_FANOTIFY_MARK
192 static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
193 int dfd, const char *pathname) {
194 #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \
195 || defined __arm__ && !defined __aarch64__
202 return syscall(__NR_fanotify_mark, fanotify_fd, flags,
203 _mask._32[0], _mask._32[1], dfd, pathname);
205 return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
210 #ifndef HAVE_MEMFD_CREATE
211 static inline int memfd_create(const char *name, unsigned int flags) {
212 return syscall(__NR_memfd_create, name, flags);
216 #ifndef BTRFS_IOCTL_MAGIC
217 #define BTRFS_IOCTL_MAGIC 0x94
220 #ifndef BTRFS_PATH_NAME_MAX
221 #define BTRFS_PATH_NAME_MAX 4087
224 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
225 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
228 #ifndef BTRFS_FSID_SIZE
229 #define BTRFS_FSID_SIZE 16
232 #ifndef BTRFS_UUID_SIZE
233 #define BTRFS_UUID_SIZE 16
236 #ifndef HAVE_LINUX_BTRFS_H
237 struct btrfs_ioctl_vol_args {
239 char name[BTRFS_PATH_NAME_MAX + 1];
242 struct btrfs_ioctl_dev_info_args {
243 uint64_t devid; /* in/out */
244 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
245 uint64_t bytes_used; /* out */
246 uint64_t total_bytes; /* out */
247 uint64_t unused[379]; /* pad to 4k */
248 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
251 struct btrfs_ioctl_fs_info_args {
252 uint64_t max_id; /* out */
253 uint64_t num_devices; /* out */
254 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
255 uint64_t reserved[124]; /* pad to 1k */
259 #ifndef BTRFS_IOC_DEFRAG
260 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
261 struct btrfs_ioctl_vol_args)
264 #ifndef BTRFS_IOC_DEV_INFO
265 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
266 struct btrfs_ioctl_dev_info_args)
269 #ifndef BTRFS_IOC_FS_INFO
270 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
271 struct btrfs_ioctl_fs_info_args)
274 #ifndef BTRFS_IOC_DEVICES_READY
275 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
276 struct btrfs_ioctl_vol_args)
279 #ifndef BTRFS_SUPER_MAGIC
280 #define BTRFS_SUPER_MAGIC 0x9123683E
288 #define MS_PRIVATE (1 << 18)
291 #if !HAVE_DECL_GETTID
292 static inline pid_t gettid(void) {
293 return (pid_t) syscall(SYS_gettid);
298 #define SCM_SECURITY 0x03
301 #ifndef MS_STRICTATIME
302 #define MS_STRICTATIME (1<<24)
310 #define MS_SHARED (1<<20)
313 #ifndef PR_SET_NO_NEW_PRIVS
314 #define PR_SET_NO_NEW_PRIVS 38
317 #ifndef PR_SET_CHILD_SUBREAPER
318 #define PR_SET_CHILD_SUBREAPER 36
321 #ifndef MAX_HANDLE_SZ
322 #define MAX_HANDLE_SZ 128
325 #ifndef __NR_name_to_handle_at
326 # if defined(__x86_64__)
327 # define __NR_name_to_handle_at 303
328 # elif defined(__i386__)
329 # define __NR_name_to_handle_at 341
330 # elif defined(__arm__)
331 # define __NR_name_to_handle_at 370
332 # elif defined(__powerpc__)
333 # define __NR_name_to_handle_at 345
335 # error "__NR_name_to_handle_at is not defined"
339 #if !HAVE_DECL_NAME_TO_HANDLE_AT
341 unsigned int handle_bytes;
343 unsigned char f_handle[0];
346 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
347 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
351 #ifndef HAVE_SECURE_GETENV
352 # ifdef HAVE___SECURE_GETENV
353 # define secure_getenv __secure_getenv
355 # error "neither secure_getenv nor __secure_getenv are available"
359 #ifndef CIFS_MAGIC_NUMBER
360 # define CIFS_MAGIC_NUMBER 0xFF534D42
363 #ifndef TFD_TIMER_CANCEL_ON_SET
364 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
368 # define SO_REUSEPORT 15
372 # define EVIOCREVOKE _IOW('E', 0x91, int)
375 #ifndef DRM_IOCTL_SET_MASTER
376 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
379 #ifndef DRM_IOCTL_DROP_MASTER
380 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
383 #if defined(__i386__) || defined(__x86_64__)
385 /* The precise definition of __O_TMPFILE is arch specific, so let's
386 * just define this on x86 where we know the value. */
389 #define __O_TMPFILE 020000000
392 /* a horrid kludge trying to make sure that this will fail on old kernels */
394 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
400 # if defined(__x86_64__)
401 # define __NR_setns 308
402 # elif defined(__i386__)
403 # define __NR_setns 346
405 # error "__NR_setns is not defined"
410 static inline int setns(int fd, int nstype) {
411 return syscall(__NR_setns, fd, nstype);
415 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
416 #define LO_FLAGS_PARTSCAN 8
419 #ifndef LOOP_CTL_REMOVE
420 #define LOOP_CTL_REMOVE 0x4C81
423 #ifndef LOOP_CTL_GET_FREE
424 #define LOOP_CTL_GET_FREE 0x4C82
427 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
428 #define IFLA_MACVLAN_UNSPEC 0
429 #define IFLA_MACVLAN_MODE 1
430 #define IFLA_MACVLAN_FLAGS 2
431 #define __IFLA_MACVLAN_MAX 3
433 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
436 #if !HAVE_DECL_IFLA_VTI_REMOTE
437 #define IFLA_VTI_UNSPEC 0
438 #define IFLA_VTI_LINK 1
439 #define IFLA_VTI_IKEY 2
440 #define IFLA_VTI_OKEY 3
441 #define IFLA_VTI_LOCAL 4
442 #define IFLA_VTI_REMOTE 5
443 #define __IFLA_VTI_MAX 6
445 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
448 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
449 #undef IFLA_PROMISCUITY
450 #define IFLA_PROMISCUITY 30
451 #define IFLA_NUM_TX_QUEUES 31
452 #define IFLA_NUM_RX_QUEUES 32
453 #define IFLA_CARRIER 33
454 #define IFLA_PHYS_PORT_ID 34
455 #define __IFLA_MAX 35
457 #define IFLA_MAX (__IFLA_MAX - 1)
460 #if !HAVE_DECL_IFLA_BOND_AD_INFO
461 #define IFLA_BOND_UNSPEC 0
462 #define IFLA_BOND_MODE 1
463 #define IFLA_BOND_ACTIVE_SLAVE 2
464 #define IFLA_BOND_MIIMON 3
465 #define IFLA_BOND_UPDELAY 4
466 #define IFLA_BOND_DOWNDELAY 5
467 #define IFLA_BOND_USE_CARRIER 6
468 #define IFLA_BOND_ARP_INTERVAL 7
469 #define IFLA_BOND_ARP_IP_TARGET 8
470 #define IFLA_BOND_ARP_VALIDATE 9
471 #define IFLA_BOND_ARP_ALL_TARGETS 10
472 #define IFLA_BOND_PRIMARY 11
473 #define IFLA_BOND_PRIMARY_RESELECT 12
474 #define IFLA_BOND_FAIL_OVER_MAC 13
475 #define IFLA_BOND_XMIT_HASH_POLICY 14
476 #define IFLA_BOND_RESEND_IGMP 15
477 #define IFLA_BOND_NUM_PEER_NOTIF 16
478 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
479 #define IFLA_BOND_MIN_LINKS 18
480 #define IFLA_BOND_LP_INTERVAL 19
481 #define IFLA_BOND_PACKETS_PER_SLAVE 20
482 #define IFLA_BOND_AD_LACP_RATE 21
483 #define IFLA_BOND_AD_SELECT 22
484 #define IFLA_BOND_AD_INFO 23
485 #define __IFLA_BOND_MAX 24
487 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
490 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
491 #define IFLA_VLAN_UNSPEC 0
492 #define IFLA_VLAN_ID 1
493 #define IFLA_VLAN_FLAGS 2
494 #define IFLA_VLAN_EGRESS_QOS 3
495 #define IFLA_VLAN_INGRESS_QOS 4
496 #define IFLA_VLAN_PROTOCOL 5
497 #define __IFLA_VLAN_MAX 6
499 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
502 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
503 #define IFLA_VXLAN_UNSPEC 0
504 #define IFLA_VXLAN_ID 1
505 #define IFLA_VXLAN_GROUP 2
506 #define IFLA_VXLAN_LINK 3
507 #define IFLA_VXLAN_LOCAL 4
508 #define IFLA_VXLAN_TTL 5
509 #define IFLA_VXLAN_TOS 6
510 #define IFLA_VXLAN_LEARNING 7
511 #define IFLA_VXLAN_AGEING 8
512 #define IFLA_VXLAN_LIMIT 9
513 #define IFLA_VXLAN_PORT_RANGE 10
514 #define IFLA_VXLAN_PROXY 11
515 #define IFLA_VXLAN_RSC 12
516 #define IFLA_VXLAN_L2MISS 13
517 #define IFLA_VXLAN_L3MISS 14
518 #define IFLA_VXLAN_PORT 15
519 #define IFLA_VXLAN_GROUP6 16
520 #define IFLA_VXLAN_LOCAL6 17
521 #define __IFLA_VXLAN_MAX 18
523 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
526 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
527 #define IFLA_IPTUN_UNSPEC 0
528 #define IFLA_IPTUN_LINK 1
529 #define IFLA_IPTUN_LOCAL 2
530 #define IFLA_IPTUN_REMOTE 3
531 #define IFLA_IPTUN_TTL 4
532 #define IFLA_IPTUN_TOS 5
533 #define IFLA_IPTUN_ENCAP_LIMIT 6
534 #define IFLA_IPTUN_FLOWINFO 7
535 #define IFLA_IPTUN_FLAGS 8
536 #define IFLA_IPTUN_PROTO 9
537 #define IFLA_IPTUN_PMTUDISC 10
538 #define IFLA_IPTUN_6RD_PREFIX 11
539 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
540 #define IFLA_IPTUN_6RD_PREFIXLEN 13
541 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
542 #define __IFLA_IPTUN_MAX 15
544 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
547 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
548 #define IFLA_BRIDGE_FLAGS 0
549 #define IFLA_BRIDGE_MODE 1
550 #define IFLA_BRIDGE_VLAN_INFO 2
551 #define __IFLA_BRIDGE_MAX 3
553 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
556 #ifndef IPV6_UNICAST_IF
557 #define IPV6_UNICAST_IF 76
560 #ifndef IFF_MULTI_QUEUE
561 #define IFF_MULTI_QUEUE 0x100
565 #define IFF_LOWER_UP 0x10000
569 #define IFF_DORMANT 0x20000
572 #ifndef BOND_XMIT_POLICY_ENCAP23
573 #define BOND_XMIT_POLICY_ENCAP23 3
576 #ifndef BOND_XMIT_POLICY_ENCAP34
577 #define BOND_XMIT_POLICY_ENCAP34 4
580 #ifndef NET_ADDR_RANDOM
581 # define NET_ADDR_RANDOM 1
584 #ifndef NET_NAME_ENUM
585 # define NET_NAME_ENUM 1
588 #ifndef NET_NAME_PREDICTABLE
589 # define NET_NAME_PREDICTABLE 2
592 #ifndef NET_NAME_USER
593 # define NET_NAME_USER 3
596 #ifndef NET_NAME_RENAMED
597 # define NET_NAME_RENAMED 4
601 # define BPF_XOR 0xa0