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_memfd_create
120 # define __NR_memfd_create 319
122 #elif defined __arm__
123 # ifndef __NR_memfd_create
124 # define __NR_memfd_create 385
126 #elif defined _MIPS_SIM
127 # ifndef __NR_memfd_create
128 # warning "__NR_memfd_create not yet defined for MIPS"
129 # define __NR_memfd_create 0xffffffff
132 # ifndef __NR_memfd_create
133 # define __NR_memfd_create 356
137 #ifndef HAVE_MEMFD_CREATE
138 static inline int memfd_create(const char *name, unsigned int flags) {
139 return syscall(__NR_memfd_create, name, flags);
143 #ifndef __NR_getrandom
144 # if defined __x86_64__
145 # define __NR_getrandom 278
147 # warning "__NR_getrandom unknown for your architecture"
148 # define __NR_getrandom 0xffffffff
152 #if !HAVE_DECL_GETRANDOM
153 static inline int getrandom(void *buffer, size_t count, unsigned flags) {
154 return syscall(__NR_getrandom, buffer, count, flags);
158 #ifndef BTRFS_IOCTL_MAGIC
159 #define BTRFS_IOCTL_MAGIC 0x94
162 #ifndef BTRFS_PATH_NAME_MAX
163 #define BTRFS_PATH_NAME_MAX 4087
166 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
167 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
170 #ifndef BTRFS_FSID_SIZE
171 #define BTRFS_FSID_SIZE 16
174 #ifndef BTRFS_UUID_SIZE
175 #define BTRFS_UUID_SIZE 16
178 #ifndef HAVE_LINUX_BTRFS_H
179 struct btrfs_ioctl_vol_args {
181 char name[BTRFS_PATH_NAME_MAX + 1];
184 struct btrfs_ioctl_dev_info_args {
185 uint64_t devid; /* in/out */
186 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
187 uint64_t bytes_used; /* out */
188 uint64_t total_bytes; /* out */
189 uint64_t unused[379]; /* pad to 4k */
190 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
193 struct btrfs_ioctl_fs_info_args {
194 uint64_t max_id; /* out */
195 uint64_t num_devices; /* out */
196 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
197 uint64_t reserved[124]; /* pad to 1k */
201 #ifndef BTRFS_IOC_DEFRAG
202 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
203 struct btrfs_ioctl_vol_args)
206 #ifndef BTRFS_IOC_DEV_INFO
207 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
208 struct btrfs_ioctl_dev_info_args)
211 #ifndef BTRFS_IOC_FS_INFO
212 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
213 struct btrfs_ioctl_fs_info_args)
216 #ifndef BTRFS_IOC_DEVICES_READY
217 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
218 struct btrfs_ioctl_vol_args)
221 #ifndef BTRFS_SUPER_MAGIC
222 #define BTRFS_SUPER_MAGIC 0x9123683E
230 #define MS_PRIVATE (1 << 18)
233 #if !HAVE_DECL_GETTID
234 static inline pid_t gettid(void) {
235 return (pid_t) syscall(SYS_gettid);
240 #define SCM_SECURITY 0x03
243 #ifndef MS_STRICTATIME
244 #define MS_STRICTATIME (1<<24)
252 #define MS_SHARED (1<<20)
255 #ifndef PR_SET_NO_NEW_PRIVS
256 #define PR_SET_NO_NEW_PRIVS 38
259 #ifndef PR_SET_CHILD_SUBREAPER
260 #define PR_SET_CHILD_SUBREAPER 36
263 #ifndef MAX_HANDLE_SZ
264 #define MAX_HANDLE_SZ 128
267 #ifndef __NR_name_to_handle_at
268 # if defined(__x86_64__)
269 # define __NR_name_to_handle_at 303
270 # elif defined(__i386__)
271 # define __NR_name_to_handle_at 341
272 # elif defined(__arm__)
273 # define __NR_name_to_handle_at 370
274 # elif defined(__powerpc__)
275 # define __NR_name_to_handle_at 345
277 # error "__NR_name_to_handle_at is not defined"
281 #if !HAVE_DECL_NAME_TO_HANDLE_AT
283 unsigned int handle_bytes;
285 unsigned char f_handle[0];
288 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
289 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
293 #ifndef HAVE_SECURE_GETENV
294 # ifdef HAVE___SECURE_GETENV
295 # define secure_getenv __secure_getenv
297 # error "neither secure_getenv nor __secure_getenv are available"
301 #ifndef CIFS_MAGIC_NUMBER
302 # define CIFS_MAGIC_NUMBER 0xFF534D42
305 #ifndef TFD_TIMER_CANCEL_ON_SET
306 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
310 # define SO_REUSEPORT 15
314 # define EVIOCREVOKE _IOW('E', 0x91, int)
317 #ifndef DRM_IOCTL_SET_MASTER
318 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
321 #ifndef DRM_IOCTL_DROP_MASTER
322 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
325 #if defined(__i386__) || defined(__x86_64__)
327 /* The precise definition of __O_TMPFILE is arch specific, so let's
328 * just define this on x86 where we know the value. */
331 #define __O_TMPFILE 020000000
334 /* a horrid kludge trying to make sure that this will fail on old kernels */
336 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
342 # if defined(__x86_64__)
343 # define __NR_setns 308
344 # elif defined(__i386__)
345 # define __NR_setns 346
347 # error "__NR_setns is not defined"
352 static inline int setns(int fd, int nstype) {
353 return syscall(__NR_setns, fd, nstype);
357 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
358 #define LO_FLAGS_PARTSCAN 8
361 #ifndef LOOP_CTL_REMOVE
362 #define LOOP_CTL_REMOVE 0x4C81
365 #ifndef LOOP_CTL_GET_FREE
366 #define LOOP_CTL_GET_FREE 0x4C82
369 #if !HAVE_DECL_IFLA_MACVLAN_FLAGS
370 #define IFLA_MACVLAN_UNSPEC 0
371 #define IFLA_MACVLAN_MODE 1
372 #define IFLA_MACVLAN_FLAGS 2
373 #define __IFLA_MACVLAN_MAX 3
375 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
378 #if !HAVE_DECL_IFLA_VTI_REMOTE
379 #define IFLA_VTI_UNSPEC 0
380 #define IFLA_VTI_LINK 1
381 #define IFLA_VTI_IKEY 2
382 #define IFLA_VTI_OKEY 3
383 #define IFLA_VTI_LOCAL 4
384 #define IFLA_VTI_REMOTE 5
385 #define __IFLA_VTI_MAX 6
387 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
390 #if !HAVE_DECL_IFLA_PHYS_PORT_ID
391 #undef IFLA_PROMISCUITY
392 #define IFLA_PROMISCUITY 30
393 #define IFLA_NUM_TX_QUEUES 31
394 #define IFLA_NUM_RX_QUEUES 32
395 #define IFLA_CARRIER 33
396 #define IFLA_PHYS_PORT_ID 34
397 #define __IFLA_MAX 35
399 #define IFLA_MAX (__IFLA_MAX - 1)
402 #if !HAVE_DECL_IFLA_BOND_AD_INFO
403 #define IFLA_BOND_UNSPEC 0
404 #define IFLA_BOND_MODE 1
405 #define IFLA_BOND_ACTIVE_SLAVE 2
406 #define IFLA_BOND_MIIMON 3
407 #define IFLA_BOND_UPDELAY 4
408 #define IFLA_BOND_DOWNDELAY 5
409 #define IFLA_BOND_USE_CARRIER 6
410 #define IFLA_BOND_ARP_INTERVAL 7
411 #define IFLA_BOND_ARP_IP_TARGET 8
412 #define IFLA_BOND_ARP_VALIDATE 9
413 #define IFLA_BOND_ARP_ALL_TARGETS 10
414 #define IFLA_BOND_PRIMARY 11
415 #define IFLA_BOND_PRIMARY_RESELECT 12
416 #define IFLA_BOND_FAIL_OVER_MAC 13
417 #define IFLA_BOND_XMIT_HASH_POLICY 14
418 #define IFLA_BOND_RESEND_IGMP 15
419 #define IFLA_BOND_NUM_PEER_NOTIF 16
420 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17
421 #define IFLA_BOND_MIN_LINKS 18
422 #define IFLA_BOND_LP_INTERVAL 19
423 #define IFLA_BOND_PACKETS_PER_SLAVE 20
424 #define IFLA_BOND_AD_LACP_RATE 21
425 #define IFLA_BOND_AD_SELECT 22
426 #define IFLA_BOND_AD_INFO 23
427 #define __IFLA_BOND_MAX 24
429 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
432 #if !HAVE_DECL_IFLA_VLAN_PROTOCOL
433 #define IFLA_VLAN_UNSPEC 0
434 #define IFLA_VLAN_ID 1
435 #define IFLA_VLAN_FLAGS 2
436 #define IFLA_VLAN_EGRESS_QOS 3
437 #define IFLA_VLAN_INGRESS_QOS 4
438 #define IFLA_VLAN_PROTOCOL 5
439 #define __IFLA_VLAN_MAX 6
441 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
444 #if !HAVE_DECL_IFLA_VXLAN_LOCAL6
445 #define IFLA_VXLAN_UNSPEC 0
446 #define IFLA_VXLAN_ID 1
447 #define IFLA_VXLAN_GROUP 2
448 #define IFLA_VXLAN_LINK 3
449 #define IFLA_VXLAN_LOCAL 4
450 #define IFLA_VXLAN_TTL 5
451 #define IFLA_VXLAN_TOS 6
452 #define IFLA_VXLAN_LEARNING 7
453 #define IFLA_VXLAN_AGEING 8
454 #define IFLA_VXLAN_LIMIT 9
455 #define IFLA_VXLAN_PORT_RANGE 10
456 #define IFLA_VXLAN_PROXY 11
457 #define IFLA_VXLAN_RSC 12
458 #define IFLA_VXLAN_L2MISS 13
459 #define IFLA_VXLAN_L3MISS 14
460 #define IFLA_VXLAN_PORT 15
461 #define IFLA_VXLAN_GROUP6 16
462 #define IFLA_VXLAN_LOCAL6 17
463 #define __IFLA_VXLAN_MAX 18
465 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
468 #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
469 #define IFLA_IPTUN_UNSPEC 0
470 #define IFLA_IPTUN_LINK 1
471 #define IFLA_IPTUN_LOCAL 2
472 #define IFLA_IPTUN_REMOTE 3
473 #define IFLA_IPTUN_TTL 4
474 #define IFLA_IPTUN_TOS 5
475 #define IFLA_IPTUN_ENCAP_LIMIT 6
476 #define IFLA_IPTUN_FLOWINFO 7
477 #define IFLA_IPTUN_FLAGS 8
478 #define IFLA_IPTUN_PROTO 9
479 #define IFLA_IPTUN_PMTUDISC 10
480 #define IFLA_IPTUN_6RD_PREFIX 11
481 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12
482 #define IFLA_IPTUN_6RD_PREFIXLEN 13
483 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
484 #define __IFLA_IPTUN_MAX 15
486 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
489 #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
490 #define IFLA_BRIDGE_FLAGS 0
491 #define IFLA_BRIDGE_MODE 1
492 #define IFLA_BRIDGE_VLAN_INFO 2
493 #define __IFLA_BRIDGE_MAX 3
495 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
498 #ifndef IPV6_UNICAST_IF
499 #define IPV6_UNICAST_IF 76
502 #ifndef IFF_MULTI_QUEUE
503 #define IFF_MULTI_QUEUE 0x100
507 #define IFF_LOWER_UP 0x10000
511 #define IFF_DORMANT 0x20000
514 #ifndef BOND_XMIT_POLICY_ENCAP23
515 #define BOND_XMIT_POLICY_ENCAP23 3
518 #ifndef BOND_XMIT_POLICY_ENCAP34
519 #define BOND_XMIT_POLICY_ENCAP34 4
522 #ifndef NET_ADDR_RANDOM
523 # define NET_ADDR_RANDOM 1
526 #ifndef NET_NAME_ENUM
527 # define NET_NAME_ENUM 1
530 #ifndef NET_NAME_PREDICTABLE
531 # define NET_NAME_PREDICTABLE 2
534 #ifndef NET_NAME_USER
535 # define NET_NAME_USER 3
538 #ifndef NET_NAME_RENAMED
539 # define NET_NAME_RENAMED 4
543 # define BPF_XOR 0xa0
546 /* Note that LOOPBACK_IFINDEX is currently not exported by the
547 * kernel/glibc, but hardcoded internally by the kernel. However, as
548 * it is exported to userspace indirectly via rtnetlink and the
549 * ioctls, and made use of widely we define it here too, in a way that
550 * is compatible with the kernel's internal definition. */
551 #ifndef LOOPBACK_IFINDEX
552 #define LOOPBACK_IFINDEX 1