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
170 # ifndef __NR_memfd_create
171 # warning "__NR_memfd_create not yet defined for MIPS"
172 # define __NR_memfd_create 0xffffffff
175 # ifndef __NR_fanotify_init
176 # define __NR_fanotify_init 338
178 # ifndef __NR_fanotify_mark
179 # define __NR_fanotify_mark 339
181 # ifndef __NR_memfd_create
182 # define __NR_memfd_create 356
186 #ifndef HAVE_FANOTIFY_INIT
187 static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
188 return syscall(__NR_fanotify_init, flags, event_f_flags);
192 #ifndef HAVE_FANOTIFY_MARK
193 static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
194 int dfd, const char *pathname) {
195 #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \
196 || defined __arm__ && !defined __aarch64__
203 return syscall(__NR_fanotify_mark, fanotify_fd, flags,
204 _mask._32[0], _mask._32[1], dfd, pathname);
206 return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
211 #ifndef HAVE_MEMFD_CREATE
212 static inline int memfd_create(const char *name, uint64_t flags) {
213 return syscall(__NR_memfd_create, name, flags);
217 #ifndef BTRFS_IOCTL_MAGIC
218 #define BTRFS_IOCTL_MAGIC 0x94
221 #ifndef BTRFS_PATH_NAME_MAX
222 #define BTRFS_PATH_NAME_MAX 4087
225 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
226 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
229 #ifndef BTRFS_FSID_SIZE
230 #define BTRFS_FSID_SIZE 16
233 #ifndef BTRFS_UUID_SIZE
234 #define BTRFS_UUID_SIZE 16
237 #ifndef HAVE_LINUX_BTRFS_H
238 struct btrfs_ioctl_vol_args {
240 char name[BTRFS_PATH_NAME_MAX + 1];
243 struct btrfs_ioctl_dev_info_args {
244 uint64_t devid; /* in/out */
245 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
246 uint64_t bytes_used; /* out */
247 uint64_t total_bytes; /* out */
248 uint64_t unused[379]; /* pad to 4k */
249 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
252 struct btrfs_ioctl_fs_info_args {
253 uint64_t max_id; /* out */
254 uint64_t num_devices; /* out */
255 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
256 uint64_t reserved[124]; /* pad to 1k */
260 #ifndef BTRFS_IOC_DEFRAG
261 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
262 struct btrfs_ioctl_vol_args)
265 #ifndef BTRFS_IOC_DEV_INFO
266 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
267 struct btrfs_ioctl_dev_info_args)
270 #ifndef BTRFS_IOC_FS_INFO
271 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
272 struct btrfs_ioctl_fs_info_args)
275 #ifndef BTRFS_IOC_DEVICES_READY
276 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
277 struct btrfs_ioctl_vol_args)
280 #ifndef BTRFS_SUPER_MAGIC
281 #define BTRFS_SUPER_MAGIC 0x9123683E
289 #define MS_PRIVATE (1 << 18)
292 #if !HAVE_DECL_GETTID
293 static inline pid_t gettid(void) {
294 return (pid_t) syscall(SYS_gettid);
299 #define SCM_SECURITY 0x03
302 #ifndef MS_STRICTATIME
303 #define MS_STRICTATIME (1<<24)
311 #define MS_SHARED (1<<20)
314 #ifndef PR_SET_NO_NEW_PRIVS
315 #define PR_SET_NO_NEW_PRIVS 38
318 #ifndef PR_SET_CHILD_SUBREAPER
319 #define PR_SET_CHILD_SUBREAPER 36
322 #ifndef MAX_HANDLE_SZ
323 #define MAX_HANDLE_SZ 128
326 #ifndef __NR_name_to_handle_at
327 # if defined(__x86_64__)
328 # define __NR_name_to_handle_at 303
329 # elif defined(__i386__)
330 # define __NR_name_to_handle_at 341
331 # elif defined(__arm__)
332 # define __NR_name_to_handle_at 370
333 # elif defined(__powerpc__)
334 # define __NR_name_to_handle_at 345
336 # error "__NR_name_to_handle_at is not defined"
340 #if !HAVE_DECL_NAME_TO_HANDLE_AT
342 unsigned int handle_bytes;
344 unsigned char f_handle[0];
347 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
348 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
352 #ifndef HAVE_SECURE_GETENV
353 # ifdef HAVE___SECURE_GETENV
354 # define secure_getenv __secure_getenv
356 # error "neither secure_getenv nor __secure_getenv are available"
360 #ifndef CIFS_MAGIC_NUMBER
361 # define CIFS_MAGIC_NUMBER 0xFF534D42
364 #ifndef TFD_TIMER_CANCEL_ON_SET
365 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
369 # define SO_REUSEPORT 15
373 # define EVIOCREVOKE _IOW('E', 0x91, int)
376 #ifndef DRM_IOCTL_SET_MASTER
377 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
380 #ifndef DRM_IOCTL_DROP_MASTER
381 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
384 #if defined(__i386__) || defined(__x86_64__)
386 /* The precise definition of __O_TMPFILE is arch specific, so let's
387 * just define this on x86 where we know the value. */
390 #define __O_TMPFILE 020000000
393 /* a horrid kludge trying to make sure that this will fail on old kernels */
395 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
401 # if defined(__x86_64__)
402 # define __NR_setns 308
403 # elif defined(__i386__)
404 # define __NR_setns 346
406 # error "__NR_setns is not defined"
411 static inline int setns(int fd, int nstype) {
412 return syscall(__NR_setns, fd, nstype);
416 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
417 #define LO_FLAGS_PARTSCAN 8
420 #ifndef LOOP_CTL_REMOVE
421 #define LOOP_CTL_REMOVE 0x4C81
424 #ifndef LOOP_CTL_GET_FREE
425 #define LOOP_CTL_GET_FREE 0x4C82
428 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
429 #define IFLA_MACVLAN_UNSPEC 0
430 #define IFLA_MACVLAN_MODE 1
431 #define IFLA_MACVLAN_FLAGS 2
432 #define __IFLA_MACVLAN_MAX 3
434 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
437 #if !HAVE_DECL_IFLA_VTI_REMOTE
438 #define IFLA_VTI_UNSPEC 0
439 #define IFLA_VTI_LINK 1
440 #define IFLA_VTI_IKEY 2
441 #define IFLA_VTI_OKEY 3
442 #define IFLA_VTI_LOCAL 4
443 #define IFLA_VTI_REMOTE 5
444 #define __IFLA_VTI_MAX 6
446 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
449 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
450 #undef IFLA_PROMISCUITY
451 #define IFLA_PROMISCUITY 30
452 #define IFLA_NUM_TX_QUEUES 31
453 #define IFLA_NUM_RX_QUEUES 32
454 #define IFLA_CARRIER 33
455 #define IFLA_PHYS_PORT_ID 34
456 #define __IFLA_MAX 35
458 #define IFLA_MAX (__IFLA_MAX - 1)
461 #if !HAVE_DECL_IFLA_BOND_AD_INFO
462 #define IFLA_BOND_UNSPEC 0
463 #define IFLA_BOND_MODE 1
464 #define IFLA_BOND_ACTIVE_SLAVE 2
465 #define IFLA_BOND_MIIMON 3
466 #define IFLA_BOND_UPDELAY 4
467 #define IFLA_BOND_DOWNDELAY 5
468 #define IFLA_BOND_USE_CARRIER 6
469 #define IFLA_BOND_ARP_INTERVAL 7
470 #define IFLA_BOND_ARP_IP_TARGET 8
471 #define IFLA_BOND_ARP_VALIDATE 9
472 #define IFLA_BOND_ARP_ALL_TARGETS 10
473 #define IFLA_BOND_PRIMARY 11
474 #define IFLA_BOND_PRIMARY_RESELECT 12
475 #define IFLA_BOND_FAIL_OVER_MAC 13
476 #define IFLA_BOND_XMIT_HASH_POLICY 14
477 #define IFLA_BOND_RESEND_IGMP 15
478 #define IFLA_BOND_NUM_PEER_NOTIF 16
479 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
480 #define IFLA_BOND_MIN_LINKS 18
481 #define IFLA_BOND_LP_INTERVAL 19
482 #define IFLA_BOND_PACKETS_PER_SLAVE 20
483 #define IFLA_BOND_AD_LACP_RATE 21
484 #define IFLA_BOND_AD_SELECT 22
485 #define IFLA_BOND_AD_INFO 23
486 #define __IFLA_BOND_MAX 24
488 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
491 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
492 #define IFLA_VLAN_UNSPEC 0
493 #define IFLA_VLAN_ID 1
494 #define IFLA_VLAN_FLAGS 2
495 #define IFLA_VLAN_EGRESS_QOS 3
496 #define IFLA_VLAN_INGRESS_QOS 4
497 #define IFLA_VLAN_PROTOCOL 5
498 #define __IFLA_VLAN_MAX 6
500 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
503 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
504 #define IFLA_VXLAN_UNSPEC 0
505 #define IFLA_VXLAN_ID 1
506 #define IFLA_VXLAN_GROUP 2
507 #define IFLA_VXLAN_LINK 3
508 #define IFLA_VXLAN_LOCAL 4
509 #define IFLA_VXLAN_TTL 5
510 #define IFLA_VXLAN_TOS 6
511 #define IFLA_VXLAN_LEARNING 7
512 #define IFLA_VXLAN_AGEING 8
513 #define IFLA_VXLAN_LIMIT 9
514 #define IFLA_VXLAN_PORT_RANGE 10
515 #define IFLA_VXLAN_PROXY 11
516 #define IFLA_VXLAN_RSC 12
517 #define IFLA_VXLAN_L2MISS 13
518 #define IFLA_VXLAN_L3MISS 14
519 #define IFLA_VXLAN_PORT 15
520 #define IFLA_VXLAN_GROUP6 16
521 #define IFLA_VXLAN_LOCAL6 17
522 #define __IFLA_VXLAN_MAX 18
524 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
527 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
528 #define IFLA_IPTUN_UNSPEC 0
529 #define IFLA_IPTUN_LINK 1
530 #define IFLA_IPTUN_LOCAL 2
531 #define IFLA_IPTUN_REMOTE 3
532 #define IFLA_IPTUN_TTL 4
533 #define IFLA_IPTUN_TOS 5
534 #define IFLA_IPTUN_ENCAP_LIMIT 6
535 #define IFLA_IPTUN_FLOWINFO 7
536 #define IFLA_IPTUN_FLAGS 8
537 #define IFLA_IPTUN_PROTO 9
538 #define IFLA_IPTUN_PMTUDISC 10
539 #define IFLA_IPTUN_6RD_PREFIX 11
540 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
541 #define IFLA_IPTUN_6RD_PREFIXLEN 13
542 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
543 #define __IFLA_IPTUN_MAX 15
545 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
548 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
549 #define IFLA_BRIDGE_FLAGS 0
550 #define IFLA_BRIDGE_MODE 1
551 #define IFLA_BRIDGE_VLAN_INFO 2
552 #define __IFLA_BRIDGE_MAX 3
554 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
557 #ifndef IPV6_UNICAST_IF
558 #define IPV6_UNICAST_IF 76
561 #ifndef IFF_MULTI_QUEUE
562 #define IFF_MULTI_QUEUE 0x100
566 #define IFF_LOWER_UP 0x10000
570 #define IFF_DORMANT 0x20000
573 #ifndef BOND_XMIT_POLICY_ENCAP23
574 #define BOND_XMIT_POLICY_ENCAP23 3
577 #ifndef BOND_XMIT_POLICY_ENCAP34
578 #define BOND_XMIT_POLICY_ENCAP34 4
581 #ifndef NET_ADDR_RANDOM
582 # define NET_ADDR_RANDOM 1
585 #ifndef NET_NAME_ENUM
586 # define NET_NAME_ENUM 1
589 #ifndef NET_NAME_PREDICTABLE
590 # define NET_NAME_PREDICTABLE 2
593 #ifndef NET_NAME_USER
594 # define NET_NAME_USER 3
597 #ifndef NET_NAME_RENAMED
598 # define NET_NAME_RENAMED 4
602 # define BPF_XOR 0xa0