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/if_link.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)
72 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
76 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
80 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
84 #define F_SEAL_GROW 0x0004 /* prevent file from growing */
88 #define F_SEAL_WRITE 0x0008 /* prevent writes */
91 #ifndef MFD_ALLOW_SEALING
92 #define MFD_ALLOW_SEALING 0x0002ULL
96 #define IP_FREEBIND 15
99 #ifndef OOM_SCORE_ADJ_MIN
100 #define OOM_SCORE_ADJ_MIN (-1000)
103 #ifndef OOM_SCORE_ADJ_MAX
104 #define OOM_SCORE_ADJ_MAX 1000
107 #ifndef AUDIT_SERVICE_START
108 #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
111 #ifndef AUDIT_SERVICE_STOP
112 #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
116 #define TIOCVHANGUP 0x5437
119 #ifndef IP_TRANSPARENT
120 #define IP_TRANSPARENT 19
124 #define SOL_NETLINK 270
127 #if !HAVE_DECL_PIVOT_ROOT
128 static inline int pivot_root(const char *new_root, const char *put_old) {
129 return syscall(SYS_pivot_root, new_root, put_old);
134 # ifndef __NR_fanotify_init
135 # define __NR_fanotify_init 300
137 # ifndef __NR_fanotify_mark
138 # define __NR_fanotify_mark 301
140 # ifndef __NR_memfd_create
141 # define __NR_memfd_create 319
143 #elif defined __arm__
144 # ifndef __NR_memfd_create
145 # define __NR_memfd_create 385
147 #elif defined _MIPS_SIM
148 # if _MIPS_SIM == _MIPS_SIM_ABI32
149 # ifndef __NR_fanotify_init
150 # define __NR_fanotify_init 4336
152 # ifndef __NR_fanotify_mark
153 # define __NR_fanotify_mark 4337
155 # elif _MIPS_SIM == _MIPS_SIM_NABI32
156 # ifndef __NR_fanotify_init
157 # define __NR_fanotify_init 6300
159 # ifndef __NR_fanotify_mark
160 # define __NR_fanotify_mark 6301
162 # elif _MIPS_SIM == _MIPS_SIM_ABI64
163 # ifndef __NR_fanotify_init
164 # define __NR_fanotify_init 5295
166 # ifndef __NR_fanotify_mark
167 # define __NR_fanotify_mark 5296
171 # ifndef __NR_fanotify_init
172 # define __NR_fanotify_init 338
174 # ifndef __NR_fanotify_mark
175 # define __NR_fanotify_mark 339
177 # ifndef __NR_memfd_create
178 # define __NR_memfd_create 356
182 #ifndef HAVE_FANOTIFY_INIT
183 static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
184 return syscall(__NR_fanotify_init, flags, event_f_flags);
188 #ifndef HAVE_FANOTIFY_MARK
189 static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
190 int dfd, const char *pathname) {
191 #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \
192 || defined __arm__ && !defined __aarch64__
199 return syscall(__NR_fanotify_mark, fanotify_fd, flags,
200 _mask._32[0], _mask._32[1], dfd, pathname);
202 return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
207 #ifndef HAVE_MEMFD_CREATE
208 static inline int memfd_create(const char *name, uint64_t flags) {
209 return syscall(__NR_memfd_create, name, flags);
213 #ifndef BTRFS_IOCTL_MAGIC
214 #define BTRFS_IOCTL_MAGIC 0x94
217 #ifndef BTRFS_PATH_NAME_MAX
218 #define BTRFS_PATH_NAME_MAX 4087
221 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
222 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
225 #ifndef BTRFS_FSID_SIZE
226 #define BTRFS_FSID_SIZE 16
229 #ifndef BTRFS_UUID_SIZE
230 #define BTRFS_UUID_SIZE 16
233 #ifndef HAVE_LINUX_BTRFS_H
234 struct btrfs_ioctl_vol_args {
236 char name[BTRFS_PATH_NAME_MAX + 1];
239 struct btrfs_ioctl_dev_info_args {
240 uint64_t devid; /* in/out */
241 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
242 uint64_t bytes_used; /* out */
243 uint64_t total_bytes; /* out */
244 uint64_t unused[379]; /* pad to 4k */
245 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
248 struct btrfs_ioctl_fs_info_args {
249 uint64_t max_id; /* out */
250 uint64_t num_devices; /* out */
251 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
252 uint64_t reserved[124]; /* pad to 1k */
256 #ifndef BTRFS_IOC_DEFRAG
257 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
258 struct btrfs_ioctl_vol_args)
261 #ifndef BTRFS_IOC_DEV_INFO
262 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
263 struct btrfs_ioctl_dev_info_args)
266 #ifndef BTRFS_IOC_FS_INFO
267 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
268 struct btrfs_ioctl_fs_info_args)
271 #ifndef BTRFS_IOC_DEVICES_READY
272 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
273 struct btrfs_ioctl_vol_args)
276 #ifndef BTRFS_SUPER_MAGIC
277 #define BTRFS_SUPER_MAGIC 0x9123683E
285 #define MS_PRIVATE (1 << 18)
288 #if !HAVE_DECL_GETTID
289 static inline pid_t gettid(void) {
290 return (pid_t) syscall(SYS_gettid);
295 #define SCM_SECURITY 0x03
298 #ifndef MS_STRICTATIME
299 #define MS_STRICTATIME (1<<24)
307 #define MS_SHARED (1<<20)
310 #ifndef PR_SET_NO_NEW_PRIVS
311 #define PR_SET_NO_NEW_PRIVS 38
314 #ifndef PR_SET_CHILD_SUBREAPER
315 #define PR_SET_CHILD_SUBREAPER 36
318 #ifndef MAX_HANDLE_SZ
319 #define MAX_HANDLE_SZ 128
322 #ifndef __NR_name_to_handle_at
323 # if defined(__x86_64__)
324 # define __NR_name_to_handle_at 303
325 # elif defined(__i386__)
326 # define __NR_name_to_handle_at 341
327 # elif defined(__arm__)
328 # define __NR_name_to_handle_at 370
329 # elif defined(__powerpc__)
330 # define __NR_name_to_handle_at 345
332 # error "__NR_name_to_handle_at is not defined"
336 #if !HAVE_DECL_NAME_TO_HANDLE_AT
338 unsigned int handle_bytes;
340 unsigned char f_handle[0];
343 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
344 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
348 #ifndef HAVE_SECURE_GETENV
349 # ifdef HAVE___SECURE_GETENV
350 # define secure_getenv __secure_getenv
352 # error "neither secure_getenv nor __secure_getenv are available"
356 #ifndef CIFS_MAGIC_NUMBER
357 # define CIFS_MAGIC_NUMBER 0xFF534D42
360 #ifndef TFD_TIMER_CANCEL_ON_SET
361 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
365 # define SO_REUSEPORT 15
369 # define EVIOCREVOKE _IOW('E', 0x91, int)
372 #ifndef DRM_IOCTL_SET_MASTER
373 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
376 #ifndef DRM_IOCTL_DROP_MASTER
377 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
380 #if defined(__i386__) || defined(__x86_64__)
382 /* The precise definition of __O_TMPFILE is arch specific, so let's
383 * just define this on x86 where we know the value. */
386 #define __O_TMPFILE 020000000
389 /* a horrid kludge trying to make sure that this will fail on old kernels */
391 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
397 # if defined(__x86_64__)
398 # define __NR_setns 308
399 # elif defined(__i386__)
400 # define __NR_setns 346
402 # error "__NR_setns is not defined"
407 static inline int setns(int fd, int nstype) {
408 return syscall(__NR_setns, fd, nstype);
412 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
413 #define LO_FLAGS_PARTSCAN 8
416 #ifndef LOOP_CTL_REMOVE
417 #define LOOP_CTL_REMOVE 0x4C81
420 #ifndef LOOP_CTL_GET_FREE
421 #define LOOP_CTL_GET_FREE 0x4C82
424 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
425 #define IFLA_MACVLAN_UNSPEC 0
426 #define IFLA_MACVLAN_MODE 1
427 #define IFLA_MACVLAN_FLAGS 2
428 #define __IFLA_MACVLAN_MAX 3
430 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
433 #if !HAVE_DECL_IFLA_VTI_REMOTE
434 #define IFLA_VTI_UNSPEC 0
435 #define IFLA_VTI_LINK 1
436 #define IFLA_VTI_IKEY 2
437 #define IFLA_VTI_OKEY 3
438 #define IFLA_VTI_LOCAL 4
439 #define IFLA_VTI_REMOTE 5
440 #define __IFLA_VTI_MAX 6
442 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
445 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
446 #undef IFLA_PROMISCUITY
447 #define IFLA_PROMISCUITY 30
448 #define IFLA_NUM_TX_QUEUES 31
449 #define IFLA_NUM_RX_QUEUES 32
450 #define IFLA_CARRIER 33
451 #define IFLA_PHYS_PORT_ID 34
452 #define __IFLA_MAX 35
454 #define IFLA_MAX (__IFLA_MAX - 1)
457 #if !HAVE_DECL_IFLA_BOND_AD_INFO
458 #define IFLA_BOND_UNSPEC 0
459 #define IFLA_BOND_MODE 1
460 #define IFLA_BOND_ACTIVE_SLAVE 2
461 #define IFLA_BOND_MIIMON 3
462 #define IFLA_BOND_UPDELAY 4
463 #define IFLA_BOND_DOWNDELAY 5
464 #define IFLA_BOND_USE_CARRIER 6
465 #define IFLA_BOND_ARP_INTERVAL 7
466 #define IFLA_BOND_ARP_IP_TARGET 8
467 #define IFLA_BOND_ARP_VALIDATE 9
468 #define IFLA_BOND_ARP_ALL_TARGETS 10
469 #define IFLA_BOND_PRIMARY 11
470 #define IFLA_BOND_PRIMARY_RESELECT 12
471 #define IFLA_BOND_FAIL_OVER_MAC 13
472 #define IFLA_BOND_XMIT_HASH_POLICY 14
473 #define IFLA_BOND_RESEND_IGMP 15
474 #define IFLA_BOND_NUM_PEER_NOTIF 16
475 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
476 #define IFLA_BOND_MIN_LINKS 18
477 #define IFLA_BOND_LP_INTERVAL 19
478 #define IFLA_BOND_PACKETS_PER_SLAVE 20
479 #define IFLA_BOND_AD_LACP_RATE 21
480 #define IFLA_BOND_AD_SELECT 22
481 #define IFLA_BOND_AD_INFO 23
482 #define __IFLA_BOND_MAX 24
484 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
487 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
488 #define IFLA_VLAN_UNSPEC 0
489 #define IFLA_VLAN_ID 1
490 #define IFLA_VLAN_FLAGS 2
491 #define IFLA_VLAN_EGRESS_QOS 3
492 #define IFLA_VLAN_INGRESS_QOS 4
493 #define IFLA_VLAN_PROTOCOL 5
494 #define __IFLA_VLAN_MAX 6
496 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
499 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
500 #define IFLA_VXLAN_UNSPEC 0
501 #define IFLA_VXLAN_ID 1
502 #define IFLA_VXLAN_GROUP 2
503 #define IFLA_VXLAN_LINK 3
504 #define IFLA_VXLAN_LOCAL 4
505 #define IFLA_VXLAN_TTL 5
506 #define IFLA_VXLAN_TOS 6
507 #define IFLA_VXLAN_LEARNING 7
508 #define IFLA_VXLAN_AGEING 8
509 #define IFLA_VXLAN_LIMIT 9
510 #define IFLA_VXLAN_PORT_RANGE 10
511 #define IFLA_VXLAN_PROXY 11
512 #define IFLA_VXLAN_RSC 12
513 #define IFLA_VXLAN_L2MISS 13
514 #define IFLA_VXLAN_L3MISS 14
515 #define IFLA_VXLAN_PORT 15
516 #define IFLA_VXLAN_GROUP6 16
517 #define IFLA_VXLAN_LOCAL6 17
518 #define __IFLA_VXLAN_MAX 18
520 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
523 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
524 #define IFLA_IPTUN_UNSPEC 0
525 #define IFLA_IPTUN_LINK 1
526 #define IFLA_IPTUN_LOCAL 2
527 #define IFLA_IPTUN_REMOTE 3
528 #define IFLA_IPTUN_TTL 4
529 #define IFLA_IPTUN_TOS 5
530 #define IFLA_IPTUN_ENCAP_LIMIT 6
531 #define IFLA_IPTUN_FLOWINFO 7
532 #define IFLA_IPTUN_FLAGS 8
533 #define IFLA_IPTUN_PROTO 9
534 #define IFLA_IPTUN_PMTUDISC 10
535 #define IFLA_IPTUN_6RD_PREFIX 11
536 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
537 #define IFLA_IPTUN_6RD_PREFIXLEN 13
538 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
539 #define __IFLA_IPTUN_MAX 15
541 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
544 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
545 #define IFLA_BRIDGE_FLAGS 0
546 #define IFLA_BRIDGE_MODE 1
547 #define IFLA_BRIDGE_VLAN_INFO 2
548 #define __IFLA_BRIDGE_MAX 3
550 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
553 #ifndef IPV6_UNICAST_IF
554 #define IPV6_UNICAST_IF 76
558 #define IFF_LOWER_UP 0x10000
562 #define IFF_DORMANT 0x20000
565 #ifndef BOND_XMIT_POLICY_ENCAP23
566 #define BOND_XMIT_POLICY_ENCAP23 3
569 #ifndef BOND_XMIT_POLICY_ENCAP34
570 #define BOND_XMIT_POLICY_ENCAP34 4
573 #ifndef NET_ADDR_RANDOM
574 # define NET_ADDR_RANDOM 1
577 #ifndef NET_NAME_ENUM
578 # define NET_NAME_ENUM 1
581 #ifndef NET_NAME_PREDICTABLE
582 # define NET_NAME_PREDICTABLE 2
585 #ifndef NET_NAME_USER
586 # define NET_NAME_USER 3
589 #ifndef NET_NAME_RENAMED
590 # define NET_NAME_RENAMED 4