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03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
15ae422b | 2 | |
c2f1db8f | 3 | #pragma once |
b9f880f4 | 4 | |
15ae422b LP |
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 | |
5430f7f2 LP |
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 | |
15ae422b LP |
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 | |
5430f7f2 | 18 | Lesser General Public License for more details. |
15ae422b | 19 | |
5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
15ae422b LP |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
22 | ***/ | |
23 | ||
b9f880f4 LP |
24 | /* Missing glibc definitions to access certain kernel APIs */ |
25 | ||
26 | #include <sys/resource.h> | |
15ae422b | 27 | #include <sys/syscall.h> |
16c42ce1 | 28 | #include <fcntl.h> |
4db17f29 | 29 | #include <stdlib.h> |
82c121a4 | 30 | #include <unistd.h> |
3b794314 | 31 | #include <errno.h> |
dd6c17b1 | 32 | #include <linux/oom.h> |
118ecf32 | 33 | #include <linux/input.h> |
d5eff740 | 34 | #include <linux/if_link.h> |
a853c45d | 35 | #include <linux/loop.h> |
dd6c17b1 LP |
36 | |
37 | #ifdef HAVE_AUDIT | |
38 | #include <libaudit.h> | |
39 | #endif | |
b9f880f4 | 40 | |
ad780f19 LP |
41 | #include "macro.h" |
42 | ||
d59d0a2b | 43 | #ifdef ARCH_MIPS |
44 | #include <asm/sgidefs.h> | |
45 | #endif | |
46 | ||
b9f880f4 LP |
47 | #ifndef RLIMIT_RTTIME |
48 | #define RLIMIT_RTTIME 15 | |
49 | #endif | |
50 | ||
517d56b1 LP |
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) | |
53 | ||
4fd5948e LP |
54 | #ifndef F_LINUX_SPECIFIC_BASE |
55 | #define F_LINUX_SPECIFIC_BASE 1024 | |
56 | #endif | |
57 | ||
58 | #ifndef F_SETPIPE_SZ | |
59 | #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) | |
60 | #endif | |
61 | ||
62 | #ifndef F_GETPIPE_SZ | |
63 | #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) | |
64 | #endif | |
65 | ||
16c42ce1 KS |
66 | #ifndef IP_FREEBIND |
67 | #define IP_FREEBIND 15 | |
68 | #endif | |
69 | ||
dd6c17b1 LP |
70 | #ifndef OOM_SCORE_ADJ_MIN |
71 | #define OOM_SCORE_ADJ_MIN (-1000) | |
72 | #endif | |
73 | ||
74 | #ifndef OOM_SCORE_ADJ_MAX | |
75 | #define OOM_SCORE_ADJ_MAX 1000 | |
76 | #endif | |
15ae422b | 77 | |
4927fcae | 78 | #ifndef AUDIT_SERVICE_START |
dd6c17b1 | 79 | #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */ |
4927fcae LP |
80 | #endif |
81 | ||
82 | #ifndef AUDIT_SERVICE_STOP | |
dd6c17b1 | 83 | #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */ |
4927fcae LP |
84 | #endif |
85 | ||
6ea832a2 LP |
86 | #ifndef TIOCVHANGUP |
87 | #define TIOCVHANGUP 0x5437 | |
88 | #endif | |
89 | ||
b90865ba KS |
90 | #ifndef IP_TRANSPARENT |
91 | #define IP_TRANSPARENT 19 | |
92 | #endif | |
93 | ||
d5eff740 TG |
94 | #ifndef IFLA_CARRIER |
95 | #define IFLA_CARRIER 33 | |
96 | #ifndef IFLA_NUM_RX_QUEUES | |
97 | #define IFLA_NUM_RX_QUEUES 32 | |
98 | #ifndef IFLA_NUM_TX_QUEUES | |
99 | #define IFLA_NUM_TX_QUEUES 31 | |
100 | #ifndef IFLA_PROMISCUITY | |
101 | #define IFLA_PROMISCUITY 30 | |
102 | #endif | |
103 | #endif | |
104 | #endif | |
105 | #endif | |
106 | ||
a8348796 | 107 | #if !HAVE_DECL_PIVOT_ROOT |
dd6c17b1 LP |
108 | static inline int pivot_root(const char *new_root, const char *put_old) { |
109 | return syscall(SYS_pivot_root, new_root, put_old); | |
110 | } | |
a8348796 | 111 | #endif |
dd6c17b1 | 112 | |
22be093f | 113 | #ifdef __x86_64__ |
d59d0a2b | 114 | # ifndef __NR_fanotify_init |
115 | # define __NR_fanotify_init 300 | |
116 | # endif | |
117 | # ifndef __NR_fanotify_mark | |
118 | # define __NR_fanotify_mark 301 | |
119 | # endif | |
120 | #elif defined _MIPS_SIM | |
121 | # if _MIPS_SIM == _MIPS_SIM_ABI32 | |
122 | # ifndef __NR_fanotify_init | |
123 | # define __NR_fanotify_init 4336 | |
124 | # endif | |
125 | # ifndef __NR_fanotify_mark | |
126 | # define __NR_fanotify_mark 4337 | |
127 | # endif | |
128 | # elif _MIPS_SIM == _MIPS_SIM_NABI32 | |
129 | # ifndef __NR_fanotify_init | |
130 | # define __NR_fanotify_init 6300 | |
131 | # endif | |
132 | # ifndef __NR_fanotify_mark | |
133 | # define __NR_fanotify_mark 6301 | |
134 | # endif | |
135 | # elif _MIPS_SIM == _MIPS_SIM_ABI64 | |
136 | # ifndef __NR_fanotify_init | |
137 | # define __NR_fanotify_init 5295 | |
138 | # endif | |
139 | # ifndef __NR_fanotify_mark | |
140 | # define __NR_fanotify_mark 5296 | |
141 | # endif | |
142 | # endif | |
22be093f | 143 | #else |
d59d0a2b | 144 | # ifndef __NR_fanotify_init |
145 | # define __NR_fanotify_init 338 | |
146 | # endif | |
147 | # ifndef __NR_fanotify_mark | |
148 | # define __NR_fanotify_mark 339 | |
149 | # endif | |
22be093f LP |
150 | #endif |
151 | ||
a8348796 | 152 | #ifndef HAVE_FANOTIFY_INIT |
22be093f | 153 | static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) { |
05115020 | 154 | return syscall(__NR_fanotify_init, flags, event_f_flags); |
22be093f | 155 | } |
a8348796 | 156 | #endif |
22be093f | 157 | |
a8348796 | 158 | #ifndef HAVE_FANOTIFY_MARK |
05115020 | 159 | static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask, |
22be093f | 160 | int dfd, const char *pathname) { |
28f30cf2 | 161 | #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \ |
e9c1ea9d | 162 | || defined __arm__ && !defined __aarch64__ |
373c23b2 | 163 | union { |
164 | uint64_t _64; | |
165 | uint32_t _32[2]; | |
166 | } _mask; | |
167 | _mask._64 = mask; | |
168 | ||
169 | return syscall(__NR_fanotify_mark, fanotify_fd, flags, | |
170 | _mask._32[0], _mask._32[1], dfd, pathname); | |
171 | #else | |
05115020 | 172 | return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname); |
373c23b2 | 173 | #endif |
22be093f | 174 | } |
a8348796 | 175 | #endif |
22be093f | 176 | |
4b357e15 MM |
177 | #ifndef BTRFS_IOCTL_MAGIC |
178 | #define BTRFS_IOCTL_MAGIC 0x94 | |
179 | #endif | |
180 | ||
181 | #ifndef BTRFS_PATH_NAME_MAX | |
182 | #define BTRFS_PATH_NAME_MAX 4087 | |
183 | #endif | |
184 | ||
185 | #ifndef BTRFS_DEVICE_PATH_NAME_MAX | |
186 | #define BTRFS_DEVICE_PATH_NAME_MAX 1024 | |
187 | #endif | |
188 | ||
189 | #ifndef BTRFS_FSID_SIZE | |
190 | #define BTRFS_FSID_SIZE 16 | |
191 | #endif | |
192 | ||
193 | #ifndef BTRFS_UUID_SIZE | |
194 | #define BTRFS_UUID_SIZE 16 | |
195 | #endif | |
196 | ||
197 | #ifndef HAVE_LINUX_BTRFS_H | |
198 | struct btrfs_ioctl_vol_args { | |
199 | int64_t fd; | |
200 | char name[BTRFS_PATH_NAME_MAX + 1]; | |
201 | }; | |
202 | ||
203 | struct btrfs_ioctl_dev_info_args { | |
204 | uint64_t devid; /* in/out */ | |
205 | uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */ | |
206 | uint64_t bytes_used; /* out */ | |
207 | uint64_t total_bytes; /* out */ | |
208 | uint64_t unused[379]; /* pad to 4k */ | |
209 | char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ | |
210 | }; | |
211 | ||
212 | struct btrfs_ioctl_fs_info_args { | |
213 | uint64_t max_id; /* out */ | |
214 | uint64_t num_devices; /* out */ | |
215 | uint8_t fsid[BTRFS_FSID_SIZE]; /* out */ | |
216 | uint64_t reserved[124]; /* pad to 1k */ | |
217 | }; | |
218 | #endif | |
219 | ||
220 | #ifndef BTRFS_IOC_DEFRAG | |
221 | #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, struct btrfs_ioctl_vol_args) | |
222 | #endif | |
223 | ||
224 | #ifndef BTRFS_IOC_DEV_INFO | |
225 | #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ | |
226 | struct btrfs_ioctl_dev_info_args) | |
227 | #endif | |
228 | ||
229 | #ifndef BTRFS_IOC_FS_INFO | |
230 | #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ | |
231 | struct btrfs_ioctl_fs_info_args) | |
232 | #endif | |
233 | ||
746f8906 LP |
234 | #ifndef BTRFS_SUPER_MAGIC |
235 | #define BTRFS_SUPER_MAGIC 0x9123683E | |
236 | #endif | |
237 | ||
94d82985 LP |
238 | #ifndef MS_MOVE |
239 | #define MS_MOVE 8192 | |
240 | #endif | |
241 | ||
7cb1094a HH |
242 | #ifndef MS_PRIVATE |
243 | #define MS_PRIVATE (1 << 18) | |
244 | #endif | |
245 | ||
a8348796 | 246 | #if !HAVE_DECL_GETTID |
4d14be09 LP |
247 | static inline pid_t gettid(void) { |
248 | return (pid_t) syscall(SYS_gettid); | |
249 | } | |
a8348796 | 250 | #endif |
4d14be09 | 251 | |
54ecda32 LP |
252 | #ifndef SCM_SECURITY |
253 | #define SCM_SECURITY 0x03 | |
254 | #endif | |
255 | ||
48ac500b LP |
256 | #ifndef MS_STRICTATIME |
257 | #define MS_STRICTATIME (1<<24) | |
258 | #endif | |
259 | ||
a9621528 AM |
260 | #ifndef MS_REC |
261 | #define MS_REC 16384 | |
262 | #endif | |
263 | ||
264 | #ifndef MS_SHARED | |
265 | #define MS_SHARED (1<<20) | |
266 | #endif | |
267 | ||
8351ceae LP |
268 | #ifndef PR_SET_NO_NEW_PRIVS |
269 | #define PR_SET_NO_NEW_PRIVS 38 | |
270 | #endif | |
d4447f4d AK |
271 | |
272 | #ifndef PR_SET_CHILD_SUBREAPER | |
273 | #define PR_SET_CHILD_SUBREAPER 36 | |
274 | #endif | |
a8348796 LP |
275 | |
276 | #ifndef MAX_HANDLE_SZ | |
277 | #define MAX_HANDLE_SZ 128 | |
278 | #endif | |
279 | ||
66330455 LP |
280 | #ifndef __NR_name_to_handle_at |
281 | # if defined(__x86_64__) | |
848af055 | 282 | # define __NR_name_to_handle_at 303 |
66330455 | 283 | # elif defined(__i386__) |
848af055 | 284 | # define __NR_name_to_handle_at 341 |
66330455 | 285 | # elif defined(__arm__) |
f527b6b8 | 286 | # define __NR_name_to_handle_at 370 |
66330455 | 287 | # elif defined(__powerpc__) |
f527b6b8 | 288 | # define __NR_name_to_handle_at 345 |
66330455 LP |
289 | # else |
290 | # error "__NR_name_to_handle_at is not defined" | |
f527b6b8 | 291 | # endif |
a8348796 LP |
292 | #endif |
293 | ||
9388e99e | 294 | #if !HAVE_DECL_NAME_TO_HANDLE_AT |
a8348796 LP |
295 | struct file_handle { |
296 | unsigned int handle_bytes; | |
297 | int handle_type; | |
298 | unsigned char f_handle[0]; | |
299 | }; | |
300 | ||
301 | static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) { | |
302 | return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags); | |
303 | } | |
304 | #endif | |
4db17f29 ZJS |
305 | |
306 | #ifndef HAVE_SECURE_GETENV | |
307 | # ifdef HAVE___SECURE_GETENV | |
308 | # define secure_getenv __secure_getenv | |
309 | # else | |
66330455 | 310 | # error "neither secure_getenv nor __secure_getenv are available" |
4db17f29 ZJS |
311 | # endif |
312 | #endif | |
85210bff LP |
313 | |
314 | #ifndef CIFS_MAGIC_NUMBER | |
65b3903f | 315 | # define CIFS_MAGIC_NUMBER 0xFF534D42 |
85210bff | 316 | #endif |
8742514c LP |
317 | |
318 | #ifndef TFD_TIMER_CANCEL_ON_SET | |
65b3903f | 319 | # define TFD_TIMER_CANCEL_ON_SET (1 << 1) |
8742514c | 320 | #endif |
f7db7a69 SL |
321 | |
322 | #ifndef SO_REUSEPORT | |
65b3903f | 323 | # define SO_REUSEPORT 15 |
f7db7a69 | 324 | #endif |
118ecf32 DH |
325 | |
326 | #ifndef EVIOCREVOKE | |
65b3903f | 327 | # define EVIOCREVOKE _IOW('E', 0x91, int) |
118ecf32 DH |
328 | #endif |
329 | ||
330 | #ifndef DRM_IOCTL_SET_MASTER | |
65b3903f | 331 | # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e) |
118ecf32 DH |
332 | #endif |
333 | ||
334 | #ifndef DRM_IOCTL_DROP_MASTER | |
65b3903f ZJS |
335 | # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f) |
336 | #endif | |
337 | ||
c09918f9 LP |
338 | #if defined(__i386__) || defined(__x86_64__) |
339 | ||
340 | /* The precise definition of __O_TMPFILE is arch specific, so let's | |
341 | * just define this on x86 where we know the value. */ | |
342 | ||
343 | #ifndef __O_TMPFILE | |
344 | #define __O_TMPFILE 020000000 | |
345 | #endif | |
346 | ||
347 | /* a horrid kludge trying to make sure that this will fail on old kernels */ | |
348 | #ifndef O_TMPFILE | |
349 | #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) | |
350 | #endif | |
351 | ||
352 | #endif | |
3b794314 HS |
353 | |
354 | #ifndef __NR_setns | |
355 | # if defined(__x86_64__) | |
356 | # define __NR_setns 308 | |
357 | # elif defined(__i386__) | |
358 | # define __NR_setns 346 | |
359 | # else | |
360 | # error "__NR_setns is not defined" | |
361 | # endif | |
362 | #endif | |
363 | ||
364 | #if !HAVE_DECL_SETNS | |
365 | static inline int setns(int fd, int nstype) { | |
366 | return syscall(__NR_setns, fd, nstype); | |
367 | } | |
368 | #endif | |
5f381b35 LP |
369 | |
370 | #if !HAVE_DECL_LO_FLAGS_PARTSCAN | |
371 | #define LO_FLAGS_PARTSCAN 8 | |
372 | #endif | |
a853c45d LP |
373 | |
374 | #ifndef LOOP_CTL_REMOVE | |
375 | #define LOOP_CTL_REMOVE 0x4C81 | |
376 | #endif | |
377 | ||
378 | #ifndef LOOP_CTL_GET_FREE | |
379 | #define LOOP_CTL_GET_FREE 0x4C82 | |
380 | #endif |