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 278
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 BTRFS_IOCTL_MAGIC
153 #define BTRFS_IOCTL_MAGIC 0x94
156 #ifndef BTRFS_PATH_NAME_MAX
157 #define BTRFS_PATH_NAME_MAX 4087
160 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
161 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
164 #ifndef BTRFS_FSID_SIZE
165 #define BTRFS_FSID_SIZE 16
168 #ifndef BTRFS_UUID_SIZE
169 #define BTRFS_UUID_SIZE 16
172 #ifndef HAVE_LINUX_BTRFS_H
173 struct btrfs_ioctl_vol_args {
175 char name[BTRFS_PATH_NAME_MAX + 1];
178 struct btrfs_ioctl_dev_info_args {
179 uint64_t devid; /* in/out */
180 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
181 uint64_t bytes_used; /* out */
182 uint64_t total_bytes; /* out */
183 uint64_t unused[379]; /* pad to 4k */
184 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
187 struct btrfs_ioctl_fs_info_args {
188 uint64_t max_id; /* out */
189 uint64_t num_devices; /* out */
190 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
191 uint64_t reserved[124]; /* pad to 1k */
195 #ifndef BTRFS_IOC_DEFRAG
196 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
197 struct btrfs_ioctl_vol_args)
200 #ifndef BTRFS_IOC_DEV_INFO
201 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
202 struct btrfs_ioctl_dev_info_args)
205 #ifndef BTRFS_IOC_FS_INFO
206 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
207 struct btrfs_ioctl_fs_info_args)
210 #ifndef BTRFS_IOC_DEVICES_READY
211 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
212 struct btrfs_ioctl_vol_args)
215 #ifndef BTRFS_SUPER_MAGIC
216 #define BTRFS_SUPER_MAGIC 0x9123683E
224 #define MS_PRIVATE (1 << 18)
227 #if !HAVE_DECL_GETTID
228 static inline pid_t gettid(void) {
229 return (pid_t) syscall(SYS_gettid);
234 #define SCM_SECURITY 0x03
237 #ifndef MS_STRICTATIME
238 #define MS_STRICTATIME (1<<24)
246 #define MS_SHARED (1<<20)
249 #ifndef PR_SET_NO_NEW_PRIVS
250 #define PR_SET_NO_NEW_PRIVS 38
253 #ifndef PR_SET_CHILD_SUBREAPER
254 #define PR_SET_CHILD_SUBREAPER 36
257 #ifndef MAX_HANDLE_SZ
258 #define MAX_HANDLE_SZ 128
261 #ifndef __NR_name_to_handle_at
262 # if defined(__x86_64__)
263 # define __NR_name_to_handle_at 303
264 # elif defined(__i386__)
265 # define __NR_name_to_handle_at 341
266 # elif defined(__arm__)
267 # define __NR_name_to_handle_at 370
268 # elif defined(__powerpc__)
269 # define __NR_name_to_handle_at 345
271 # error "__NR_name_to_handle_at is not defined"
275 #if !HAVE_DECL_NAME_TO_HANDLE_AT
277 unsigned int handle_bytes;
279 unsigned char f_handle[0];
282 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
283 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
287 #ifndef HAVE_SECURE_GETENV
288 # ifdef HAVE___SECURE_GETENV
289 # define secure_getenv __secure_getenv
291 # error "neither secure_getenv nor __secure_getenv are available"
295 #ifndef CIFS_MAGIC_NUMBER
296 # define CIFS_MAGIC_NUMBER 0xFF534D42
299 #ifndef TFD_TIMER_CANCEL_ON_SET
300 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
304 # define SO_REUSEPORT 15
308 # define EVIOCREVOKE _IOW('E', 0x91, int)
311 #ifndef DRM_IOCTL_SET_MASTER
312 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
315 #ifndef DRM_IOCTL_DROP_MASTER
316 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
319 #if defined(__i386__) || defined(__x86_64__)
321 /* The precise definition of __O_TMPFILE is arch specific, so let's
322 * just define this on x86 where we know the value. */
325 #define __O_TMPFILE 020000000
328 /* a horrid kludge trying to make sure that this will fail on old kernels */
330 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
336 # if defined(__x86_64__)
337 # define __NR_setns 308
338 # elif defined(__i386__)
339 # define __NR_setns 346
341 # error "__NR_setns is not defined"
346 static inline int setns(int fd, int nstype) {
347 return syscall(__NR_setns, fd, nstype);
351 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
352 #define LO_FLAGS_PARTSCAN 8
355 #ifndef LOOP_CTL_REMOVE
356 #define LOOP_CTL_REMOVE 0x4C81
359 #ifndef LOOP_CTL_GET_FREE
360 #define LOOP_CTL_GET_FREE 0x4C82
363 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
364 #define IFLA_MACVLAN_UNSPEC 0
365 #define IFLA_MACVLAN_MODE 1
366 #define IFLA_MACVLAN_FLAGS 2
367 #define __IFLA_MACVLAN_MAX 3
369 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
372 #if !HAVE_DECL_IFLA_VTI_REMOTE
373 #define IFLA_VTI_UNSPEC 0
374 #define IFLA_VTI_LINK 1
375 #define IFLA_VTI_IKEY 2
376 #define IFLA_VTI_OKEY 3
377 #define IFLA_VTI_LOCAL 4
378 #define IFLA_VTI_REMOTE 5
379 #define __IFLA_VTI_MAX 6
381 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
384 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
385 #undef IFLA_PROMISCUITY
386 #define IFLA_PROMISCUITY 30
387 #define IFLA_NUM_TX_QUEUES 31
388 #define IFLA_NUM_RX_QUEUES 32
389 #define IFLA_CARRIER 33
390 #define IFLA_PHYS_PORT_ID 34
391 #define __IFLA_MAX 35
393 #define IFLA_MAX (__IFLA_MAX - 1)
396 #if !HAVE_DECL_IFLA_BOND_AD_INFO
397 #define IFLA_BOND_UNSPEC 0
398 #define IFLA_BOND_MODE 1
399 #define IFLA_BOND_ACTIVE_SLAVE 2
400 #define IFLA_BOND_MIIMON 3
401 #define IFLA_BOND_UPDELAY 4
402 #define IFLA_BOND_DOWNDELAY 5
403 #define IFLA_BOND_USE_CARRIER 6
404 #define IFLA_BOND_ARP_INTERVAL 7
405 #define IFLA_BOND_ARP_IP_TARGET 8
406 #define IFLA_BOND_ARP_VALIDATE 9
407 #define IFLA_BOND_ARP_ALL_TARGETS 10
408 #define IFLA_BOND_PRIMARY 11
409 #define IFLA_BOND_PRIMARY_RESELECT 12
410 #define IFLA_BOND_FAIL_OVER_MAC 13
411 #define IFLA_BOND_XMIT_HASH_POLICY 14
412 #define IFLA_BOND_RESEND_IGMP 15
413 #define IFLA_BOND_NUM_PEER_NOTIF 16
414 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
415 #define IFLA_BOND_MIN_LINKS 18
416 #define IFLA_BOND_LP_INTERVAL 19
417 #define IFLA_BOND_PACKETS_PER_SLAVE 20
418 #define IFLA_BOND_AD_LACP_RATE 21
419 #define IFLA_BOND_AD_SELECT 22
420 #define IFLA_BOND_AD_INFO 23
421 #define __IFLA_BOND_MAX 24
423 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
426 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
427 #define IFLA_VLAN_UNSPEC 0
428 #define IFLA_VLAN_ID 1
429 #define IFLA_VLAN_FLAGS 2
430 #define IFLA_VLAN_EGRESS_QOS 3
431 #define IFLA_VLAN_INGRESS_QOS 4
432 #define IFLA_VLAN_PROTOCOL 5
433 #define __IFLA_VLAN_MAX 6
435 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
438 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
439 #define IFLA_VXLAN_UNSPEC 0
440 #define IFLA_VXLAN_ID 1
441 #define IFLA_VXLAN_GROUP 2
442 #define IFLA_VXLAN_LINK 3
443 #define IFLA_VXLAN_LOCAL 4
444 #define IFLA_VXLAN_TTL 5
445 #define IFLA_VXLAN_TOS 6
446 #define IFLA_VXLAN_LEARNING 7
447 #define IFLA_VXLAN_AGEING 8
448 #define IFLA_VXLAN_LIMIT 9
449 #define IFLA_VXLAN_PORT_RANGE 10
450 #define IFLA_VXLAN_PROXY 11
451 #define IFLA_VXLAN_RSC 12
452 #define IFLA_VXLAN_L2MISS 13
453 #define IFLA_VXLAN_L3MISS 14
454 #define IFLA_VXLAN_PORT 15
455 #define IFLA_VXLAN_GROUP6 16
456 #define IFLA_VXLAN_LOCAL6 17
457 #define __IFLA_VXLAN_MAX 18
459 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
462 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
463 #define IFLA_IPTUN_UNSPEC 0
464 #define IFLA_IPTUN_LINK 1
465 #define IFLA_IPTUN_LOCAL 2
466 #define IFLA_IPTUN_REMOTE 3
467 #define IFLA_IPTUN_TTL 4
468 #define IFLA_IPTUN_TOS 5
469 #define IFLA_IPTUN_ENCAP_LIMIT 6
470 #define IFLA_IPTUN_FLOWINFO 7
471 #define IFLA_IPTUN_FLAGS 8
472 #define IFLA_IPTUN_PROTO 9
473 #define IFLA_IPTUN_PMTUDISC 10
474 #define IFLA_IPTUN_6RD_PREFIX 11
475 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
476 #define IFLA_IPTUN_6RD_PREFIXLEN 13
477 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
478 #define __IFLA_IPTUN_MAX 15
480 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
483 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
484 #define IFLA_BRIDGE_FLAGS 0
485 #define IFLA_BRIDGE_MODE 1
486 #define IFLA_BRIDGE_VLAN_INFO 2
487 #define __IFLA_BRIDGE_MAX 3
489 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
492 #ifndef IPV6_UNICAST_IF
493 #define IPV6_UNICAST_IF 76
496 #ifndef IFF_MULTI_QUEUE
497 #define IFF_MULTI_QUEUE 0x100
501 #define IFF_LOWER_UP 0x10000
505 #define IFF_DORMANT 0x20000
508 #ifndef BOND_XMIT_POLICY_ENCAP23
509 #define BOND_XMIT_POLICY_ENCAP23 3
512 #ifndef BOND_XMIT_POLICY_ENCAP34
513 #define BOND_XMIT_POLICY_ENCAP34 4
516 #ifndef NET_ADDR_RANDOM
517 # define NET_ADDR_RANDOM 1
520 #ifndef NET_NAME_ENUM
521 # define NET_NAME_ENUM 1
524 #ifndef NET_NAME_PREDICTABLE
525 # define NET_NAME_PREDICTABLE 2
528 #ifndef NET_NAME_USER
529 # define NET_NAME_USER 3
532 #ifndef NET_NAME_RENAMED
533 # define NET_NAME_RENAMED 4
537 # define BPF_XOR 0xa0
540 /* Note that LOOPBACK_IFINDEX is currently not exported by the
541 * kernel/glibc, but hardcoded internally by the kernel. However, as
542 * it is exported to userspace indirectly via rtnetlink and the
543 * ioctls, and made use of widely we define it here too, in a way that
544 * is compatible with the kernel's internal definition. */
545 #ifndef LOOPBACK_IFINDEX
546 #define LOOPBACK_IFINDEX 1