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)
68 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
70 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
71 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
72 #define F_SEAL_GROW 0x0004 /* prevent file from growing */
73 #define F_SEAL_WRITE 0x0008 /* prevent writes */
76 #ifndef MFD_ALLOW_SEALING
77 #define MFD_ALLOW_SEALING 0x0002ULL
81 #define IP_FREEBIND 15
84 #ifndef OOM_SCORE_ADJ_MIN
85 #define OOM_SCORE_ADJ_MIN (-1000)
88 #ifndef OOM_SCORE_ADJ_MAX
89 #define OOM_SCORE_ADJ_MAX 1000
92 #ifndef AUDIT_SERVICE_START
93 #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
96 #ifndef AUDIT_SERVICE_STOP
97 #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
101 #define TIOCVHANGUP 0x5437
104 #ifndef IP_TRANSPARENT
105 #define IP_TRANSPARENT 19
109 #define SOL_NETLINK 270
112 #if !HAVE_DECL_PIVOT_ROOT
113 static inline int pivot_root(const char *new_root, const char *put_old) {
114 return syscall(SYS_pivot_root, new_root, put_old);
119 # ifndef __NR_fanotify_init
120 # define __NR_fanotify_init 300
122 # ifndef __NR_fanotify_mark
123 # define __NR_fanotify_mark 301
125 # ifndef __NR_memfd_create
126 # define __NR_memfd_create 319
128 #elif defined __arm__
129 # ifndef __NR_memfd_create
130 # define __NR_memfd_create 385
132 #elif defined _MIPS_SIM
133 # if _MIPS_SIM == _MIPS_SIM_ABI32
134 # ifndef __NR_fanotify_init
135 # define __NR_fanotify_init 4336
137 # ifndef __NR_fanotify_mark
138 # define __NR_fanotify_mark 4337
140 # elif _MIPS_SIM == _MIPS_SIM_NABI32
141 # ifndef __NR_fanotify_init
142 # define __NR_fanotify_init 6300
144 # ifndef __NR_fanotify_mark
145 # define __NR_fanotify_mark 6301
147 # elif _MIPS_SIM == _MIPS_SIM_ABI64
148 # ifndef __NR_fanotify_init
149 # define __NR_fanotify_init 5295
151 # ifndef __NR_fanotify_mark
152 # define __NR_fanotify_mark 5296
155 # ifndef __NR_memfd_create
156 # warning "__NR_memfd_create not yet defined for MIPS"
157 # define __NR_memfd_create 0xffffffff
160 # ifndef __NR_fanotify_init
161 # define __NR_fanotify_init 338
163 # ifndef __NR_fanotify_mark
164 # define __NR_fanotify_mark 339
166 # ifndef __NR_memfd_create
167 # define __NR_memfd_create 356
171 #ifndef HAVE_FANOTIFY_INIT
172 static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
173 return syscall(__NR_fanotify_init, flags, event_f_flags);
177 #ifndef HAVE_FANOTIFY_MARK
178 static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
179 int dfd, const char *pathname) {
180 #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \
181 || defined __arm__ && !defined __aarch64__
188 return syscall(__NR_fanotify_mark, fanotify_fd, flags,
189 _mask._32[0], _mask._32[1], dfd, pathname);
191 return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
196 #ifndef HAVE_MEMFD_CREATE
197 static inline int memfd_create(const char *name, unsigned int flags) {
198 return syscall(__NR_memfd_create, name, flags);
202 #ifndef BTRFS_IOCTL_MAGIC
203 #define BTRFS_IOCTL_MAGIC 0x94
206 #ifndef BTRFS_PATH_NAME_MAX
207 #define BTRFS_PATH_NAME_MAX 4087
210 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
211 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
214 #ifndef BTRFS_FSID_SIZE
215 #define BTRFS_FSID_SIZE 16
218 #ifndef BTRFS_UUID_SIZE
219 #define BTRFS_UUID_SIZE 16
222 #ifndef HAVE_LINUX_BTRFS_H
223 struct btrfs_ioctl_vol_args {
225 char name[BTRFS_PATH_NAME_MAX + 1];
228 struct btrfs_ioctl_dev_info_args {
229 uint64_t devid; /* in/out */
230 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
231 uint64_t bytes_used; /* out */
232 uint64_t total_bytes; /* out */
233 uint64_t unused[379]; /* pad to 4k */
234 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
237 struct btrfs_ioctl_fs_info_args {
238 uint64_t max_id; /* out */
239 uint64_t num_devices; /* out */
240 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
241 uint64_t reserved[124]; /* pad to 1k */
245 #ifndef BTRFS_IOC_DEFRAG
246 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
247 struct btrfs_ioctl_vol_args)
250 #ifndef BTRFS_IOC_DEV_INFO
251 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
252 struct btrfs_ioctl_dev_info_args)
255 #ifndef BTRFS_IOC_FS_INFO
256 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
257 struct btrfs_ioctl_fs_info_args)
260 #ifndef BTRFS_IOC_DEVICES_READY
261 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
262 struct btrfs_ioctl_vol_args)
265 #ifndef BTRFS_SUPER_MAGIC
266 #define BTRFS_SUPER_MAGIC 0x9123683E
274 #define MS_PRIVATE (1 << 18)
277 #if !HAVE_DECL_GETTID
278 static inline pid_t gettid(void) {
279 return (pid_t) syscall(SYS_gettid);
284 #define SCM_SECURITY 0x03
287 #ifndef MS_STRICTATIME
288 #define MS_STRICTATIME (1<<24)
296 #define MS_SHARED (1<<20)
299 #ifndef PR_SET_NO_NEW_PRIVS
300 #define PR_SET_NO_NEW_PRIVS 38
303 #ifndef PR_SET_CHILD_SUBREAPER
304 #define PR_SET_CHILD_SUBREAPER 36
307 #ifndef MAX_HANDLE_SZ
308 #define MAX_HANDLE_SZ 128
311 #ifndef __NR_name_to_handle_at
312 # if defined(__x86_64__)
313 # define __NR_name_to_handle_at 303
314 # elif defined(__i386__)
315 # define __NR_name_to_handle_at 341
316 # elif defined(__arm__)
317 # define __NR_name_to_handle_at 370
318 # elif defined(__powerpc__)
319 # define __NR_name_to_handle_at 345
321 # error "__NR_name_to_handle_at is not defined"
325 #if !HAVE_DECL_NAME_TO_HANDLE_AT
327 unsigned int handle_bytes;
329 unsigned char f_handle[0];
332 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
333 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
337 #ifndef HAVE_SECURE_GETENV
338 # ifdef HAVE___SECURE_GETENV
339 # define secure_getenv __secure_getenv
341 # error "neither secure_getenv nor __secure_getenv are available"
345 #ifndef CIFS_MAGIC_NUMBER
346 # define CIFS_MAGIC_NUMBER 0xFF534D42
349 #ifndef TFD_TIMER_CANCEL_ON_SET
350 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
354 # define SO_REUSEPORT 15
358 # define EVIOCREVOKE _IOW('E', 0x91, int)
361 #ifndef DRM_IOCTL_SET_MASTER
362 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
365 #ifndef DRM_IOCTL_DROP_MASTER
366 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
369 #if defined(__i386__) || defined(__x86_64__)
371 /* The precise definition of __O_TMPFILE is arch specific, so let's
372 * just define this on x86 where we know the value. */
375 #define __O_TMPFILE 020000000
378 /* a horrid kludge trying to make sure that this will fail on old kernels */
380 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
386 # if defined(__x86_64__)
387 # define __NR_setns 308
388 # elif defined(__i386__)
389 # define __NR_setns 346
391 # error "__NR_setns is not defined"
396 static inline int setns(int fd, int nstype) {
397 return syscall(__NR_setns, fd, nstype);
401 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
402 #define LO_FLAGS_PARTSCAN 8
405 #ifndef LOOP_CTL_REMOVE
406 #define LOOP_CTL_REMOVE 0x4C81
409 #ifndef LOOP_CTL_GET_FREE
410 #define LOOP_CTL_GET_FREE 0x4C82
413 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
414 #define IFLA_MACVLAN_UNSPEC 0
415 #define IFLA_MACVLAN_MODE 1
416 #define IFLA_MACVLAN_FLAGS 2
417 #define __IFLA_MACVLAN_MAX 3
419 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
422 #if !HAVE_DECL_IFLA_VTI_REMOTE
423 #define IFLA_VTI_UNSPEC 0
424 #define IFLA_VTI_LINK 1
425 #define IFLA_VTI_IKEY 2
426 #define IFLA_VTI_OKEY 3
427 #define IFLA_VTI_LOCAL 4
428 #define IFLA_VTI_REMOTE 5
429 #define __IFLA_VTI_MAX 6
431 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
434 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
435 #undef IFLA_PROMISCUITY
436 #define IFLA_PROMISCUITY 30
437 #define IFLA_NUM_TX_QUEUES 31
438 #define IFLA_NUM_RX_QUEUES 32
439 #define IFLA_CARRIER 33
440 #define IFLA_PHYS_PORT_ID 34
441 #define __IFLA_MAX 35
443 #define IFLA_MAX (__IFLA_MAX - 1)
446 #if !HAVE_DECL_IFLA_BOND_AD_INFO
447 #define IFLA_BOND_UNSPEC 0
448 #define IFLA_BOND_MODE 1
449 #define IFLA_BOND_ACTIVE_SLAVE 2
450 #define IFLA_BOND_MIIMON 3
451 #define IFLA_BOND_UPDELAY 4
452 #define IFLA_BOND_DOWNDELAY 5
453 #define IFLA_BOND_USE_CARRIER 6
454 #define IFLA_BOND_ARP_INTERVAL 7
455 #define IFLA_BOND_ARP_IP_TARGET 8
456 #define IFLA_BOND_ARP_VALIDATE 9
457 #define IFLA_BOND_ARP_ALL_TARGETS 10
458 #define IFLA_BOND_PRIMARY 11
459 #define IFLA_BOND_PRIMARY_RESELECT 12
460 #define IFLA_BOND_FAIL_OVER_MAC 13
461 #define IFLA_BOND_XMIT_HASH_POLICY 14
462 #define IFLA_BOND_RESEND_IGMP 15
463 #define IFLA_BOND_NUM_PEER_NOTIF 16
464 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
465 #define IFLA_BOND_MIN_LINKS 18
466 #define IFLA_BOND_LP_INTERVAL 19
467 #define IFLA_BOND_PACKETS_PER_SLAVE 20
468 #define IFLA_BOND_AD_LACP_RATE 21
469 #define IFLA_BOND_AD_SELECT 22
470 #define IFLA_BOND_AD_INFO 23
471 #define __IFLA_BOND_MAX 24
473 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
476 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
477 #define IFLA_VLAN_UNSPEC 0
478 #define IFLA_VLAN_ID 1
479 #define IFLA_VLAN_FLAGS 2
480 #define IFLA_VLAN_EGRESS_QOS 3
481 #define IFLA_VLAN_INGRESS_QOS 4
482 #define IFLA_VLAN_PROTOCOL 5
483 #define __IFLA_VLAN_MAX 6
485 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
488 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
489 #define IFLA_VXLAN_UNSPEC 0
490 #define IFLA_VXLAN_ID 1
491 #define IFLA_VXLAN_GROUP 2
492 #define IFLA_VXLAN_LINK 3
493 #define IFLA_VXLAN_LOCAL 4
494 #define IFLA_VXLAN_TTL 5
495 #define IFLA_VXLAN_TOS 6
496 #define IFLA_VXLAN_LEARNING 7
497 #define IFLA_VXLAN_AGEING 8
498 #define IFLA_VXLAN_LIMIT 9
499 #define IFLA_VXLAN_PORT_RANGE 10
500 #define IFLA_VXLAN_PROXY 11
501 #define IFLA_VXLAN_RSC 12
502 #define IFLA_VXLAN_L2MISS 13
503 #define IFLA_VXLAN_L3MISS 14
504 #define IFLA_VXLAN_PORT 15
505 #define IFLA_VXLAN_GROUP6 16
506 #define IFLA_VXLAN_LOCAL6 17
507 #define __IFLA_VXLAN_MAX 18
509 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
512 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
513 #define IFLA_IPTUN_UNSPEC 0
514 #define IFLA_IPTUN_LINK 1
515 #define IFLA_IPTUN_LOCAL 2
516 #define IFLA_IPTUN_REMOTE 3
517 #define IFLA_IPTUN_TTL 4
518 #define IFLA_IPTUN_TOS 5
519 #define IFLA_IPTUN_ENCAP_LIMIT 6
520 #define IFLA_IPTUN_FLOWINFO 7
521 #define IFLA_IPTUN_FLAGS 8
522 #define IFLA_IPTUN_PROTO 9
523 #define IFLA_IPTUN_PMTUDISC 10
524 #define IFLA_IPTUN_6RD_PREFIX 11
525 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
526 #define IFLA_IPTUN_6RD_PREFIXLEN 13
527 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
528 #define __IFLA_IPTUN_MAX 15
530 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
533 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
534 #define IFLA_BRIDGE_FLAGS 0
535 #define IFLA_BRIDGE_MODE 1
536 #define IFLA_BRIDGE_VLAN_INFO 2
537 #define __IFLA_BRIDGE_MAX 3
539 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
542 #ifndef IPV6_UNICAST_IF
543 #define IPV6_UNICAST_IF 76
546 #ifndef IFF_MULTI_QUEUE
547 #define IFF_MULTI_QUEUE 0x100
551 #define IFF_LOWER_UP 0x10000
555 #define IFF_DORMANT 0x20000
558 #ifndef BOND_XMIT_POLICY_ENCAP23
559 #define BOND_XMIT_POLICY_ENCAP23 3
562 #ifndef BOND_XMIT_POLICY_ENCAP34
563 #define BOND_XMIT_POLICY_ENCAP34 4
566 #ifndef NET_ADDR_RANDOM
567 # define NET_ADDR_RANDOM 1
570 #ifndef NET_NAME_ENUM
571 # define NET_NAME_ENUM 1
574 #ifndef NET_NAME_PREDICTABLE
575 # define NET_NAME_PREDICTABLE 2
578 #ifndef NET_NAME_USER
579 # define NET_NAME_USER 3
582 #ifndef NET_NAME_RENAMED
583 # define NET_NAME_RENAMED 4
587 # define BPF_XOR 0xa0