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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | #pragma once | |
4 | ||
5 | /*** | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
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. | |
14 | ||
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. | |
19 | ||
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/>. | |
22 | ***/ | |
23 | ||
24 | /* Missing glibc definitions to access certain kernel APIs */ | |
25 | ||
26 | #include <sys/resource.h> | |
27 | #include <sys/syscall.h> | |
28 | #include <fcntl.h> | |
29 | #include <stdlib.h> | |
30 | #include <unistd.h> | |
31 | #include <errno.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> | |
37 | ||
38 | #ifdef HAVE_AUDIT | |
39 | #include <libaudit.h> | |
40 | #endif | |
41 | ||
42 | #include "macro.h" | |
43 | ||
44 | #ifdef ARCH_MIPS | |
45 | #include <asm/sgidefs.h> | |
46 | #endif | |
47 | ||
48 | #ifndef RLIMIT_RTTIME | |
49 | #define RLIMIT_RTTIME 15 | |
50 | #endif | |
51 | ||
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) | |
54 | ||
55 | #ifndef F_LINUX_SPECIFIC_BASE | |
56 | #define F_LINUX_SPECIFIC_BASE 1024 | |
57 | #endif | |
58 | ||
59 | #ifndef F_SETPIPE_SZ | |
60 | #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) | |
61 | #endif | |
62 | ||
63 | #ifndef F_GETPIPE_SZ | |
64 | #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) | |
65 | #endif | |
66 | ||
67 | #ifndef IP_FREEBIND | |
68 | #define IP_FREEBIND 15 | |
69 | #endif | |
70 | ||
71 | #ifndef OOM_SCORE_ADJ_MIN | |
72 | #define OOM_SCORE_ADJ_MIN (-1000) | |
73 | #endif | |
74 | ||
75 | #ifndef OOM_SCORE_ADJ_MAX | |
76 | #define OOM_SCORE_ADJ_MAX 1000 | |
77 | #endif | |
78 | ||
79 | #ifndef AUDIT_SERVICE_START | |
80 | #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */ | |
81 | #endif | |
82 | ||
83 | #ifndef AUDIT_SERVICE_STOP | |
84 | #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */ | |
85 | #endif | |
86 | ||
87 | #ifndef TIOCVHANGUP | |
88 | #define TIOCVHANGUP 0x5437 | |
89 | #endif | |
90 | ||
91 | #ifndef IP_TRANSPARENT | |
92 | #define IP_TRANSPARENT 19 | |
93 | #endif | |
94 | ||
95 | #ifndef SOL_NETLINK | |
96 | #define SOL_NETLINK 270 | |
97 | #endif | |
98 | ||
99 | #if !HAVE_DECL_PIVOT_ROOT | |
100 | static inline int pivot_root(const char *new_root, const char *put_old) { | |
101 | return syscall(SYS_pivot_root, new_root, put_old); | |
102 | } | |
103 | #endif | |
104 | ||
105 | #ifdef __x86_64__ | |
106 | # ifndef __NR_fanotify_init | |
107 | # define __NR_fanotify_init 300 | |
108 | # endif | |
109 | # ifndef __NR_fanotify_mark | |
110 | # define __NR_fanotify_mark 301 | |
111 | # endif | |
112 | #elif defined _MIPS_SIM | |
113 | # if _MIPS_SIM == _MIPS_SIM_ABI32 | |
114 | # ifndef __NR_fanotify_init | |
115 | # define __NR_fanotify_init 4336 | |
116 | # endif | |
117 | # ifndef __NR_fanotify_mark | |
118 | # define __NR_fanotify_mark 4337 | |
119 | # endif | |
120 | # elif _MIPS_SIM == _MIPS_SIM_NABI32 | |
121 | # ifndef __NR_fanotify_init | |
122 | # define __NR_fanotify_init 6300 | |
123 | # endif | |
124 | # ifndef __NR_fanotify_mark | |
125 | # define __NR_fanotify_mark 6301 | |
126 | # endif | |
127 | # elif _MIPS_SIM == _MIPS_SIM_ABI64 | |
128 | # ifndef __NR_fanotify_init | |
129 | # define __NR_fanotify_init 5295 | |
130 | # endif | |
131 | # ifndef __NR_fanotify_mark | |
132 | # define __NR_fanotify_mark 5296 | |
133 | # endif | |
134 | # endif | |
135 | #else | |
136 | # ifndef __NR_fanotify_init | |
137 | # define __NR_fanotify_init 338 | |
138 | # endif | |
139 | # ifndef __NR_fanotify_mark | |
140 | # define __NR_fanotify_mark 339 | |
141 | # endif | |
142 | #endif | |
143 | ||
144 | #ifndef HAVE_FANOTIFY_INIT | |
145 | static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) { | |
146 | return syscall(__NR_fanotify_init, flags, event_f_flags); | |
147 | } | |
148 | #endif | |
149 | ||
150 | #ifndef HAVE_FANOTIFY_MARK | |
151 | static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask, | |
152 | int dfd, const char *pathname) { | |
153 | #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \ | |
154 | || defined __arm__ && !defined __aarch64__ | |
155 | union { | |
156 | uint64_t _64; | |
157 | uint32_t _32[2]; | |
158 | } _mask; | |
159 | _mask._64 = mask; | |
160 | ||
161 | return syscall(__NR_fanotify_mark, fanotify_fd, flags, | |
162 | _mask._32[0], _mask._32[1], dfd, pathname); | |
163 | #else | |
164 | return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname); | |
165 | #endif | |
166 | } | |
167 | #endif | |
168 | ||
169 | #ifndef BTRFS_IOCTL_MAGIC | |
170 | #define BTRFS_IOCTL_MAGIC 0x94 | |
171 | #endif | |
172 | ||
173 | #ifndef BTRFS_PATH_NAME_MAX | |
174 | #define BTRFS_PATH_NAME_MAX 4087 | |
175 | #endif | |
176 | ||
177 | #ifndef BTRFS_DEVICE_PATH_NAME_MAX | |
178 | #define BTRFS_DEVICE_PATH_NAME_MAX 1024 | |
179 | #endif | |
180 | ||
181 | #ifndef BTRFS_FSID_SIZE | |
182 | #define BTRFS_FSID_SIZE 16 | |
183 | #endif | |
184 | ||
185 | #ifndef BTRFS_UUID_SIZE | |
186 | #define BTRFS_UUID_SIZE 16 | |
187 | #endif | |
188 | ||
189 | #ifndef HAVE_LINUX_BTRFS_H | |
190 | struct btrfs_ioctl_vol_args { | |
191 | int64_t fd; | |
192 | char name[BTRFS_PATH_NAME_MAX + 1]; | |
193 | }; | |
194 | ||
195 | struct btrfs_ioctl_dev_info_args { | |
196 | uint64_t devid; /* in/out */ | |
197 | uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */ | |
198 | uint64_t bytes_used; /* out */ | |
199 | uint64_t total_bytes; /* out */ | |
200 | uint64_t unused[379]; /* pad to 4k */ | |
201 | char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ | |
202 | }; | |
203 | ||
204 | struct btrfs_ioctl_fs_info_args { | |
205 | uint64_t max_id; /* out */ | |
206 | uint64_t num_devices; /* out */ | |
207 | uint8_t fsid[BTRFS_FSID_SIZE]; /* out */ | |
208 | uint64_t reserved[124]; /* pad to 1k */ | |
209 | }; | |
210 | #endif | |
211 | ||
212 | #ifndef BTRFS_IOC_DEFRAG | |
213 | #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, struct btrfs_ioctl_vol_args) | |
214 | #endif | |
215 | ||
216 | #ifndef BTRFS_IOC_DEV_INFO | |
217 | #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ | |
218 | struct btrfs_ioctl_dev_info_args) | |
219 | #endif | |
220 | ||
221 | #ifndef BTRFS_IOC_FS_INFO | |
222 | #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ | |
223 | struct btrfs_ioctl_fs_info_args) | |
224 | #endif | |
225 | ||
226 | #ifndef BTRFS_SUPER_MAGIC | |
227 | #define BTRFS_SUPER_MAGIC 0x9123683E | |
228 | #endif | |
229 | ||
230 | #ifndef MS_MOVE | |
231 | #define MS_MOVE 8192 | |
232 | #endif | |
233 | ||
234 | #ifndef MS_PRIVATE | |
235 | #define MS_PRIVATE (1 << 18) | |
236 | #endif | |
237 | ||
238 | #if !HAVE_DECL_GETTID | |
239 | static inline pid_t gettid(void) { | |
240 | return (pid_t) syscall(SYS_gettid); | |
241 | } | |
242 | #endif | |
243 | ||
244 | #ifndef SCM_SECURITY | |
245 | #define SCM_SECURITY 0x03 | |
246 | #endif | |
247 | ||
248 | #ifndef MS_STRICTATIME | |
249 | #define MS_STRICTATIME (1<<24) | |
250 | #endif | |
251 | ||
252 | #ifndef MS_REC | |
253 | #define MS_REC 16384 | |
254 | #endif | |
255 | ||
256 | #ifndef MS_SHARED | |
257 | #define MS_SHARED (1<<20) | |
258 | #endif | |
259 | ||
260 | #ifndef PR_SET_NO_NEW_PRIVS | |
261 | #define PR_SET_NO_NEW_PRIVS 38 | |
262 | #endif | |
263 | ||
264 | #ifndef PR_SET_CHILD_SUBREAPER | |
265 | #define PR_SET_CHILD_SUBREAPER 36 | |
266 | #endif | |
267 | ||
268 | #ifndef MAX_HANDLE_SZ | |
269 | #define MAX_HANDLE_SZ 128 | |
270 | #endif | |
271 | ||
272 | #ifndef __NR_name_to_handle_at | |
273 | # if defined(__x86_64__) | |
274 | # define __NR_name_to_handle_at 303 | |
275 | # elif defined(__i386__) | |
276 | # define __NR_name_to_handle_at 341 | |
277 | # elif defined(__arm__) | |
278 | # define __NR_name_to_handle_at 370 | |
279 | # elif defined(__powerpc__) | |
280 | # define __NR_name_to_handle_at 345 | |
281 | # else | |
282 | # error "__NR_name_to_handle_at is not defined" | |
283 | # endif | |
284 | #endif | |
285 | ||
286 | #if !HAVE_DECL_NAME_TO_HANDLE_AT | |
287 | struct file_handle { | |
288 | unsigned int handle_bytes; | |
289 | int handle_type; | |
290 | unsigned char f_handle[0]; | |
291 | }; | |
292 | ||
293 | static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) { | |
294 | return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags); | |
295 | } | |
296 | #endif | |
297 | ||
298 | #ifndef HAVE_SECURE_GETENV | |
299 | # ifdef HAVE___SECURE_GETENV | |
300 | # define secure_getenv __secure_getenv | |
301 | # else | |
302 | # error "neither secure_getenv nor __secure_getenv are available" | |
303 | # endif | |
304 | #endif | |
305 | ||
306 | #ifndef CIFS_MAGIC_NUMBER | |
307 | # define CIFS_MAGIC_NUMBER 0xFF534D42 | |
308 | #endif | |
309 | ||
310 | #ifndef TFD_TIMER_CANCEL_ON_SET | |
311 | # define TFD_TIMER_CANCEL_ON_SET (1 << 1) | |
312 | #endif | |
313 | ||
314 | #ifndef SO_REUSEPORT | |
315 | # define SO_REUSEPORT 15 | |
316 | #endif | |
317 | ||
318 | #ifndef EVIOCREVOKE | |
319 | # define EVIOCREVOKE _IOW('E', 0x91, int) | |
320 | #endif | |
321 | ||
322 | #ifndef DRM_IOCTL_SET_MASTER | |
323 | # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e) | |
324 | #endif | |
325 | ||
326 | #ifndef DRM_IOCTL_DROP_MASTER | |
327 | # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f) | |
328 | #endif | |
329 | ||
330 | #if defined(__i386__) || defined(__x86_64__) | |
331 | ||
332 | /* The precise definition of __O_TMPFILE is arch specific, so let's | |
333 | * just define this on x86 where we know the value. */ | |
334 | ||
335 | #ifndef __O_TMPFILE | |
336 | #define __O_TMPFILE 020000000 | |
337 | #endif | |
338 | ||
339 | /* a horrid kludge trying to make sure that this will fail on old kernels */ | |
340 | #ifndef O_TMPFILE | |
341 | #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) | |
342 | #endif | |
343 | ||
344 | #endif | |
345 | ||
346 | #ifndef __NR_setns | |
347 | # if defined(__x86_64__) | |
348 | # define __NR_setns 308 | |
349 | # elif defined(__i386__) | |
350 | # define __NR_setns 346 | |
351 | # else | |
352 | # error "__NR_setns is not defined" | |
353 | # endif | |
354 | #endif | |
355 | ||
356 | #if !HAVE_DECL_SETNS | |
357 | static inline int setns(int fd, int nstype) { | |
358 | return syscall(__NR_setns, fd, nstype); | |
359 | } | |
360 | #endif | |
361 | ||
362 | #if !HAVE_DECL_LO_FLAGS_PARTSCAN | |
363 | #define LO_FLAGS_PARTSCAN 8 | |
364 | #endif | |
365 | ||
366 | #ifndef LOOP_CTL_REMOVE | |
367 | #define LOOP_CTL_REMOVE 0x4C81 | |
368 | #endif | |
369 | ||
370 | #ifndef LOOP_CTL_GET_FREE | |
371 | #define LOOP_CTL_GET_FREE 0x4C82 | |
372 | #endif | |
373 | ||
374 | #if !HAVE_DECL_IFLA_MACVLAN_FLAGS | |
375 | #define IFLA_MACVLAN_UNSPEC 0 | |
376 | #define IFLA_MACVLAN_MODE 1 | |
377 | #define IFLA_MACVLAN_FLAGS 2 | |
378 | #define __IFLA_MACVLAN_MAX 3 | |
379 | ||
380 | #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1) | |
381 | #endif | |
382 | ||
383 | #if !HAVE_DECL_IFLA_VTI_REMOTE | |
384 | #define IFLA_VTI_UNSPEC 0 | |
385 | #define IFLA_VTI_LINK 1 | |
386 | #define IFLA_VTI_IKEY 2 | |
387 | #define IFLA_VTI_OKEY 3 | |
388 | #define IFLA_VTI_LOCAL 4 | |
389 | #define IFLA_VTI_REMOTE 5 | |
390 | #define __IFLA_VTI_MAX 6 | |
391 | ||
392 | #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1) | |
393 | #endif | |
394 | ||
395 | #if !HAVE_DECL_IFLA_PHYS_PORT_ID | |
396 | #undef IFLA_PROMISCUITY | |
397 | #define IFLA_PROMISCUITY 30 | |
398 | #define IFLA_NUM_TX_QUEUES 31 | |
399 | #define IFLA_NUM_RX_QUEUES 32 | |
400 | #define IFLA_CARRIER 33 | |
401 | #define IFLA_PHYS_PORT_ID 34 | |
402 | #define __IFLA_MAX 35 | |
403 | ||
404 | #define IFLA_MAX (__IFLA_MAX - 1) | |
405 | #endif | |
406 | ||
407 | #if !HAVE_DECL_IFLA_BOND_AD_INFO | |
408 | #define IFLA_BOND_UNSPEC 0 | |
409 | #define IFLA_BOND_MODE 1 | |
410 | #define IFLA_BOND_ACTIVE_SLAVE 2 | |
411 | #define IFLA_BOND_MIIMON 3 | |
412 | #define IFLA_BOND_UPDELAY 4 | |
413 | #define IFLA_BOND_DOWNDELAY 5 | |
414 | #define IFLA_BOND_USE_CARRIER 6 | |
415 | #define IFLA_BOND_ARP_INTERVAL 7 | |
416 | #define IFLA_BOND_ARP_IP_TARGET 8 | |
417 | #define IFLA_BOND_ARP_VALIDATE 9 | |
418 | #define IFLA_BOND_ARP_ALL_TARGETS 10 | |
419 | #define IFLA_BOND_PRIMARY 11 | |
420 | #define IFLA_BOND_PRIMARY_RESELECT 12 | |
421 | #define IFLA_BOND_FAIL_OVER_MAC 13 | |
422 | #define IFLA_BOND_XMIT_HASH_POLICY 14 | |
423 | #define IFLA_BOND_RESEND_IGMP 15 | |
424 | #define IFLA_BOND_NUM_PEER_NOTIF 16 | |
425 | #define IFLA_BOND_ALL_SLAVES_ACTIVE 17 | |
426 | #define IFLA_BOND_MIN_LINKS 18 | |
427 | #define IFLA_BOND_LP_INTERVAL 19 | |
428 | #define IFLA_BOND_PACKETS_PER_SLAVE 20 | |
429 | #define IFLA_BOND_AD_LACP_RATE 21 | |
430 | #define IFLA_BOND_AD_SELECT 22 | |
431 | #define IFLA_BOND_AD_INFO 23 | |
432 | #define __IFLA_BOND_MAX 24 | |
433 | ||
434 | #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1) | |
435 | #endif | |
436 | ||
437 | #if !HAVE_DECL_IFLA_VLAN_PROTOCOL | |
438 | #define IFLA_VLAN_UNSPEC 0 | |
439 | #define IFLA_VLAN_ID 1 | |
440 | #define IFLA_VLAN_FLAGS 2 | |
441 | #define IFLA_VLAN_EGRESS_QOS 3 | |
442 | #define IFLA_VLAN_INGRESS_QOS 4 | |
443 | #define IFLA_VLAN_PROTOCOL 5 | |
444 | #define __IFLA_VLAN_MAX 6 | |
445 | ||
446 | #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1) | |
447 | #endif | |
448 | ||
449 | #if !HAVE_DECL_IFLA_VXLAN_LOCAL6 | |
450 | #define IFLA_VXLAN_UNSPEC 0 | |
451 | #define IFLA_VXLAN_ID 1 | |
452 | #define IFLA_VXLAN_GROUP 2 | |
453 | #define IFLA_VXLAN_LINK 3 | |
454 | #define IFLA_VXLAN_LOCAL 4 | |
455 | #define IFLA_VXLAN_TTL 5 | |
456 | #define IFLA_VXLAN_TOS 6 | |
457 | #define IFLA_VXLAN_LEARNING 7 | |
458 | #define IFLA_VXLAN_AGEING 8 | |
459 | #define IFLA_VXLAN_LIMIT 9 | |
460 | #define IFLA_VXLAN_PORT_RANGE 10 | |
461 | #define IFLA_VXLAN_PROXY 11 | |
462 | #define IFLA_VXLAN_RSC 12 | |
463 | #define IFLA_VXLAN_L2MISS 13 | |
464 | #define IFLA_VXLAN_L3MISS 14 | |
465 | #define IFLA_VXLAN_PORT 15 | |
466 | #define IFLA_VXLAN_GROUP6 16 | |
467 | #define IFLA_VXLAN_LOCAL6 17 | |
468 | #define __IFLA_VXLAN_MAX 18 | |
469 | ||
470 | #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1) | |
471 | #endif | |
472 | ||
473 | #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN | |
474 | #define IFLA_IPTUN_UNSPEC 0 | |
475 | #define IFLA_IPTUN_LINK 1 | |
476 | #define IFLA_IPTUN_LOCAL 2 | |
477 | #define IFLA_IPTUN_REMOTE 3 | |
478 | #define IFLA_IPTUN_TTL 4 | |
479 | #define IFLA_IPTUN_TOS 5 | |
480 | #define IFLA_IPTUN_ENCAP_LIMIT 6 | |
481 | #define IFLA_IPTUN_FLOWINFO 7 | |
482 | #define IFLA_IPTUN_FLAGS 8 | |
483 | #define IFLA_IPTUN_PROTO 9 | |
484 | #define IFLA_IPTUN_PMTUDISC 10 | |
485 | #define IFLA_IPTUN_6RD_PREFIX 11 | |
486 | #define IFLA_IPTUN_6RD_RELAY_PREFIX 12 | |
487 | #define IFLA_IPTUN_6RD_PREFIXLEN 13 | |
488 | #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14 | |
489 | #define __IFLA_IPTUN_MAX 15 | |
490 | ||
491 | #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1) | |
492 | #endif | |
493 | ||
494 | #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO | |
495 | #define IFLA_BRIDGE_FLAGS 0 | |
496 | #define IFLA_BRIDGE_MODE 1 | |
497 | #define IFLA_BRIDGE_VLAN_INFO 2 | |
498 | #define __IFLA_BRIDGE_MAX 3 | |
499 | ||
500 | #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1) | |
501 | #endif | |
502 | ||
503 | #ifndef IPV6_UNICAST_IF | |
504 | #define IPV6_UNICAST_IF 76 | |
505 | #endif |