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);
118 #ifndef __NR_memfd_create
119 # if defined __x86_64__
120 # define __NR_memfd_create 319
121 # elif defined __arm__
122 # define __NR_memfd_create 385
123 # elif defined _MIPS_SIM
124 # warning "__NR_memfd_create not yet defined for MIPS"
125 # define __NR_memfd_create 0xffffffff
127 # define __NR_memfd_create 356
131 #ifndef HAVE_MEMFD_CREATE
132 static inline int memfd_create(const char *name, unsigned int flags) {
133 return syscall(__NR_memfd_create, name, flags);
137 #ifndef __NR_getrandom
138 # if defined __x86_64__
139 # define __NR_getrandom 318
141 # warning "__NR_getrandom unknown for your architecture"
142 # define __NR_getrandom 0xffffffff
146 #if !HAVE_DECL_GETRANDOM
147 static inline int getrandom(void *buffer, size_t count, unsigned flags) {
148 return syscall(__NR_getrandom, buffer, count, flags);
152 #ifndef GRND_NONBLOCK
153 #define GRND_NONBLOCK 0x0001
157 #define GRND_RANDOM 0x0002
160 #ifndef BTRFS_IOCTL_MAGIC
161 #define BTRFS_IOCTL_MAGIC 0x94
164 #ifndef BTRFS_PATH_NAME_MAX
165 #define BTRFS_PATH_NAME_MAX 4087
168 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
169 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
172 #ifndef BTRFS_FSID_SIZE
173 #define BTRFS_FSID_SIZE 16
176 #ifndef BTRFS_UUID_SIZE
177 #define BTRFS_UUID_SIZE 16
180 #ifndef HAVE_LINUX_BTRFS_H
181 struct btrfs_ioctl_vol_args {
183 char name[BTRFS_PATH_NAME_MAX + 1];
186 struct btrfs_ioctl_dev_info_args {
187 uint64_t devid; /* in/out */
188 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
189 uint64_t bytes_used; /* out */
190 uint64_t total_bytes; /* out */
191 uint64_t unused[379]; /* pad to 4k */
192 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
195 struct btrfs_ioctl_fs_info_args {
196 uint64_t max_id; /* out */
197 uint64_t num_devices; /* out */
198 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
199 uint64_t reserved[124]; /* pad to 1k */
203 #ifndef BTRFS_IOC_DEFRAG
204 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
205 struct btrfs_ioctl_vol_args)
208 #ifndef BTRFS_IOC_DEV_INFO
209 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
210 struct btrfs_ioctl_dev_info_args)
213 #ifndef BTRFS_IOC_FS_INFO
214 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
215 struct btrfs_ioctl_fs_info_args)
218 #ifndef BTRFS_IOC_DEVICES_READY
219 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
220 struct btrfs_ioctl_vol_args)
223 #ifndef BTRFS_SUPER_MAGIC
224 #define BTRFS_SUPER_MAGIC 0x9123683E
232 #define MS_PRIVATE (1 << 18)
235 #if !HAVE_DECL_GETTID
236 static inline pid_t gettid(void) {
237 return (pid_t) syscall(SYS_gettid);
242 #define SCM_SECURITY 0x03
245 #ifndef MS_STRICTATIME
246 #define MS_STRICTATIME (1<<24)
254 #define MS_SHARED (1<<20)
257 #ifndef PR_SET_NO_NEW_PRIVS
258 #define PR_SET_NO_NEW_PRIVS 38
261 #ifndef PR_SET_CHILD_SUBREAPER
262 #define PR_SET_CHILD_SUBREAPER 36
265 #ifndef MAX_HANDLE_SZ
266 #define MAX_HANDLE_SZ 128
269 #ifndef __NR_name_to_handle_at
270 # if defined(__x86_64__)
271 # define __NR_name_to_handle_at 303
272 # elif defined(__i386__)
273 # define __NR_name_to_handle_at 341
274 # elif defined(__arm__)
275 # define __NR_name_to_handle_at 370
276 # elif defined(__powerpc__)
277 # define __NR_name_to_handle_at 345
279 # error "__NR_name_to_handle_at is not defined"
283 #if !HAVE_DECL_NAME_TO_HANDLE_AT
285 unsigned int handle_bytes;
287 unsigned char f_handle[0];
290 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
291 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
295 #ifndef HAVE_SECURE_GETENV
296 # ifdef HAVE___SECURE_GETENV
297 # define secure_getenv __secure_getenv
299 # error "neither secure_getenv nor __secure_getenv are available"
303 #ifndef CIFS_MAGIC_NUMBER
304 # define CIFS_MAGIC_NUMBER 0xFF534D42
307 #ifndef TFD_TIMER_CANCEL_ON_SET
308 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
312 # define SO_REUSEPORT 15
316 # define EVIOCREVOKE _IOW('E', 0x91, int)
319 #ifndef DRM_IOCTL_SET_MASTER
320 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
323 #ifndef DRM_IOCTL_DROP_MASTER
324 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
327 #if defined(__i386__) || defined(__x86_64__)
329 /* The precise definition of __O_TMPFILE is arch specific, so let's
330 * just define this on x86 where we know the value. */
333 #define __O_TMPFILE 020000000
336 /* a horrid kludge trying to make sure that this will fail on old kernels */
338 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
344 # if defined(__x86_64__)
345 # define __NR_setns 308
346 # elif defined(__i386__)
347 # define __NR_setns 346
349 # error "__NR_setns is not defined"
354 static inline int setns(int fd, int nstype) {
355 return syscall(__NR_setns, fd, nstype);
359 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
360 #define LO_FLAGS_PARTSCAN 8
363 #ifndef LOOP_CTL_REMOVE
364 #define LOOP_CTL_REMOVE 0x4C81
367 #ifndef LOOP_CTL_GET_FREE
368 #define LOOP_CTL_GET_FREE 0x4C82
371 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
372 #define IFLA_MACVLAN_UNSPEC 0
373 #define IFLA_MACVLAN_MODE 1
374 #define IFLA_MACVLAN_FLAGS 2
375 #define __IFLA_MACVLAN_MAX 3
377 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
380 #if !HAVE_DECL_IFLA_VTI_REMOTE
381 #define IFLA_VTI_UNSPEC 0
382 #define IFLA_VTI_LINK 1
383 #define IFLA_VTI_IKEY 2
384 #define IFLA_VTI_OKEY 3
385 #define IFLA_VTI_LOCAL 4
386 #define IFLA_VTI_REMOTE 5
387 #define __IFLA_VTI_MAX 6
389 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
392 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
393 #undef IFLA_PROMISCUITY
394 #define IFLA_PROMISCUITY 30
395 #define IFLA_NUM_TX_QUEUES 31
396 #define IFLA_NUM_RX_QUEUES 32
397 #define IFLA_CARRIER 33
398 #define IFLA_PHYS_PORT_ID 34
399 #define __IFLA_MAX 35
401 #define IFLA_MAX (__IFLA_MAX - 1)
404 #if !HAVE_DECL_IFLA_BOND_AD_INFO
405 #define IFLA_BOND_UNSPEC 0
406 #define IFLA_BOND_MODE 1
407 #define IFLA_BOND_ACTIVE_SLAVE 2
408 #define IFLA_BOND_MIIMON 3
409 #define IFLA_BOND_UPDELAY 4
410 #define IFLA_BOND_DOWNDELAY 5
411 #define IFLA_BOND_USE_CARRIER 6
412 #define IFLA_BOND_ARP_INTERVAL 7
413 #define IFLA_BOND_ARP_IP_TARGET 8
414 #define IFLA_BOND_ARP_VALIDATE 9
415 #define IFLA_BOND_ARP_ALL_TARGETS 10
416 #define IFLA_BOND_PRIMARY 11
417 #define IFLA_BOND_PRIMARY_RESELECT 12
418 #define IFLA_BOND_FAIL_OVER_MAC 13
419 #define IFLA_BOND_XMIT_HASH_POLICY 14
420 #define IFLA_BOND_RESEND_IGMP 15
421 #define IFLA_BOND_NUM_PEER_NOTIF 16
422 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
423 #define IFLA_BOND_MIN_LINKS 18
424 #define IFLA_BOND_LP_INTERVAL 19
425 #define IFLA_BOND_PACKETS_PER_SLAVE 20
426 #define IFLA_BOND_AD_LACP_RATE 21
427 #define IFLA_BOND_AD_SELECT 22
428 #define IFLA_BOND_AD_INFO 23
429 #define __IFLA_BOND_MAX 24
431 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
434 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
435 #define IFLA_VLAN_UNSPEC 0
436 #define IFLA_VLAN_ID 1
437 #define IFLA_VLAN_FLAGS 2
438 #define IFLA_VLAN_EGRESS_QOS 3
439 #define IFLA_VLAN_INGRESS_QOS 4
440 #define IFLA_VLAN_PROTOCOL 5
441 #define __IFLA_VLAN_MAX 6
443 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
446 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
447 #define IFLA_VXLAN_UNSPEC 0
448 #define IFLA_VXLAN_ID 1
449 #define IFLA_VXLAN_GROUP 2
450 #define IFLA_VXLAN_LINK 3
451 #define IFLA_VXLAN_LOCAL 4
452 #define IFLA_VXLAN_TTL 5
453 #define IFLA_VXLAN_TOS 6
454 #define IFLA_VXLAN_LEARNING 7
455 #define IFLA_VXLAN_AGEING 8
456 #define IFLA_VXLAN_LIMIT 9
457 #define IFLA_VXLAN_PORT_RANGE 10
458 #define IFLA_VXLAN_PROXY 11
459 #define IFLA_VXLAN_RSC 12
460 #define IFLA_VXLAN_L2MISS 13
461 #define IFLA_VXLAN_L3MISS 14
462 #define IFLA_VXLAN_PORT 15
463 #define IFLA_VXLAN_GROUP6 16
464 #define IFLA_VXLAN_LOCAL6 17
465 #define __IFLA_VXLAN_MAX 18
467 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
470 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
471 #define IFLA_IPTUN_UNSPEC 0
472 #define IFLA_IPTUN_LINK 1
473 #define IFLA_IPTUN_LOCAL 2
474 #define IFLA_IPTUN_REMOTE 3
475 #define IFLA_IPTUN_TTL 4
476 #define IFLA_IPTUN_TOS 5
477 #define IFLA_IPTUN_ENCAP_LIMIT 6
478 #define IFLA_IPTUN_FLOWINFO 7
479 #define IFLA_IPTUN_FLAGS 8
480 #define IFLA_IPTUN_PROTO 9
481 #define IFLA_IPTUN_PMTUDISC 10
482 #define IFLA_IPTUN_6RD_PREFIX 11
483 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
484 #define IFLA_IPTUN_6RD_PREFIXLEN 13
485 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
486 #define __IFLA_IPTUN_MAX 15
488 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
491 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
492 #define IFLA_BRIDGE_FLAGS 0
493 #define IFLA_BRIDGE_MODE 1
494 #define IFLA_BRIDGE_VLAN_INFO 2
495 #define __IFLA_BRIDGE_MAX 3
497 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
500 #ifndef IPV6_UNICAST_IF
501 #define IPV6_UNICAST_IF 76
504 #ifndef IFF_MULTI_QUEUE
505 #define IFF_MULTI_QUEUE 0x100
509 #define IFF_LOWER_UP 0x10000
513 #define IFF_DORMANT 0x20000
516 #ifndef BOND_XMIT_POLICY_ENCAP23
517 #define BOND_XMIT_POLICY_ENCAP23 3
520 #ifndef BOND_XMIT_POLICY_ENCAP34
521 #define BOND_XMIT_POLICY_ENCAP34 4
524 #ifndef NET_ADDR_RANDOM
525 # define NET_ADDR_RANDOM 1
528 #ifndef NET_NAME_ENUM
529 # define NET_NAME_ENUM 1
532 #ifndef NET_NAME_PREDICTABLE
533 # define NET_NAME_PREDICTABLE 2
536 #ifndef NET_NAME_USER
537 # define NET_NAME_USER 3
540 #ifndef NET_NAME_RENAMED
541 # define NET_NAME_RENAMED 4
545 # define BPF_XOR 0xa0
548 /* Note that LOOPBACK_IFINDEX is currently not exported by the
549 * kernel/glibc, but hardcoded internally by the kernel. However, as
550 * it is exported to userspace indirectly via rtnetlink and the
551 * ioctls, and made use of widely we define it here too, in a way that
552 * is compatible with the kernel's internal definition. */
553 #ifndef LOOPBACK_IFINDEX
554 #define LOOPBACK_IFINDEX 1