4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
7 Copyright 2016 Zbigniew Jędrzejewski-Szmek
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as published by
11 the Free Software Foundation; either version 2.1 of the License, or
12 (at your option) any later version.
14 systemd is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23 /* Missing glibc definitions to access certain kernel APIs */
25 #if 0 /// UNNEEDED by elogind
26 #include <sys/types.h>
29 static inline int pivot_root(const char *new_root, const char *put_old) {
30 return syscall(SYS_pivot_root, new_root, put_old);
35 /* ======================================================================= */
37 #if !HAVE_MEMFD_CREATE
38 # ifndef __NR_memfd_create
39 # if defined __x86_64__
40 # define __NR_memfd_create 319
41 # elif defined __arm__
42 # define __NR_memfd_create 385
43 # elif defined __aarch64__
44 # define __NR_memfd_create 279
45 # elif defined __s390__
46 # define __NR_memfd_create 350
47 # elif defined _MIPS_SIM
48 # if _MIPS_SIM == _MIPS_SIM_ABI32
49 # define __NR_memfd_create 4354
51 # if _MIPS_SIM == _MIPS_SIM_NABI32
52 # define __NR_memfd_create 6318
54 # if _MIPS_SIM == _MIPS_SIM_ABI64
55 # define __NR_memfd_create 5314
57 # elif defined __i386__
58 # define __NR_memfd_create 356
59 # elif defined __arc__
60 # define __NR_memfd_create 279
62 # warning "__NR_memfd_create unknown for your architecture"
66 static inline int memfd_create(const char *name, unsigned int flags) {
67 # ifdef __NR_memfd_create
68 return syscall(__NR_memfd_create, name, flags);
76 /* ======================================================================= */
79 # ifndef __NR_getrandom
80 # if defined __x86_64__
81 # define __NR_getrandom 318
82 # elif defined(__i386__)
83 # define __NR_getrandom 355
84 # elif defined(__arm__)
85 # define __NR_getrandom 384
86 # elif defined(__aarch64__)
87 # define __NR_getrandom 278
88 # elif defined(__ia64__)
89 # define __NR_getrandom 1339
90 # elif defined(__m68k__)
91 # define __NR_getrandom 352
92 # elif defined(__s390x__)
93 # define __NR_getrandom 349
94 # elif defined(__powerpc__)
95 # define __NR_getrandom 359
96 # elif defined _MIPS_SIM
97 # if _MIPS_SIM == _MIPS_SIM_ABI32
98 # define __NR_getrandom 4353
100 # if _MIPS_SIM == _MIPS_SIM_NABI32
101 # define __NR_getrandom 6317
103 # if _MIPS_SIM == _MIPS_SIM_ABI64
104 # define __NR_getrandom 5313
106 # elif defined(__arc__)
107 # define __NR_getrandom 278
109 # warning "__NR_getrandom unknown for your architecture"
113 static inline int getrandom(void *buffer, size_t count, unsigned flags) {
114 # ifdef __NR_getrandom
115 return syscall(__NR_getrandom, buffer, count, flags);
123 /* ======================================================================= */
126 static inline pid_t gettid(void) {
127 return (pid_t) syscall(SYS_gettid);
131 /* ======================================================================= */
133 #if !HAVE_NAME_TO_HANDLE_AT
134 # ifndef __NR_name_to_handle_at
135 # if defined(__x86_64__)
136 # define __NR_name_to_handle_at 303
137 # elif defined(__i386__)
138 # define __NR_name_to_handle_at 341
139 # elif defined(__arm__)
140 # define __NR_name_to_handle_at 370
141 # elif defined(__powerpc__)
142 # define __NR_name_to_handle_at 345
143 # elif defined(__arc__)
144 # define __NR_name_to_handle_at 264
146 # error "__NR_name_to_handle_at is not defined"
151 unsigned int handle_bytes;
153 unsigned char f_handle[0];
156 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
157 # ifdef __NR_name_to_handle_at
158 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
166 /* ======================================================================= */
170 # if defined(__x86_64__)
171 # define __NR_setns 308
172 # elif defined(__i386__)
173 # define __NR_setns 346
174 # elif defined(__arc__)
175 # define __NR_setns 268
177 # error "__NR_setns is not defined"
181 static inline int setns(int fd, int nstype) {
183 return syscall(__NR_setns, fd, nstype);
191 /* ======================================================================= */
193 static inline pid_t raw_getpid(void) {
194 #if defined(__alpha__)
195 return (pid_t) syscall(__NR_getxpid);
197 return (pid_t) syscall(__NR_getpid);
201 /* ======================================================================= */
204 # ifndef __NR_renameat2
205 # if defined __x86_64__
206 # define __NR_renameat2 316
207 # elif defined __arm__
208 # define __NR_renameat2 382
209 # elif defined __aarch64__
210 # define __NR_renameat2 276
211 # elif defined _MIPS_SIM
212 # if _MIPS_SIM == _MIPS_SIM_ABI32
213 # define __NR_renameat2 4351
215 # if _MIPS_SIM == _MIPS_SIM_NABI32
216 # define __NR_renameat2 6315
218 # if _MIPS_SIM == _MIPS_SIM_ABI64
219 # define __NR_renameat2 5311
221 # elif defined __i386__
222 # define __NR_renameat2 353
223 # elif defined __powerpc64__
224 # define __NR_renameat2 357
225 # elif defined __s390__ || defined __s390x__
226 # define __NR_renameat2 347
227 # elif defined __arc__
228 # define __NR_renameat2 276
230 # warning "__NR_renameat2 unknown for your architecture"
234 static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
235 # ifdef __NR_renameat2
236 return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
244 /* ======================================================================= */
247 static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
249 return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
257 /* ======================================================================= */
260 static inline long keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4,unsigned long arg5) {
262 return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
269 static inline key_serial_t add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
271 return syscall(__NR_add_key, type, description, payload, plen, ringid);
278 static inline key_serial_t request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
279 # ifdef __NR_request_key
280 return syscall(__NR_request_key, type, description, callout_info, destringid);
288 /* ======================================================================= */
290 #if !HAVE_COPY_FILE_RANGE
291 # ifndef __NR_copy_file_range
292 # if defined(__x86_64__)
293 # define __NR_copy_file_range 326
294 # elif defined(__i386__)
295 # define __NR_copy_file_range 377
296 # elif defined __s390__
297 # define __NR_copy_file_range 375
298 # elif defined __arm__
299 # define __NR_copy_file_range 391
300 # elif defined __aarch64__
301 # define __NR_copy_file_range 285
302 # elif defined __powerpc__
303 # define __NR_copy_file_range 379
304 # elif defined __arc__
305 # define __NR_copy_file_range 285
307 # warning "__NR_copy_file_range not defined for your architecture"
311 static inline ssize_t copy_file_range(int fd_in, loff_t *off_in,
312 int fd_out, loff_t *off_out,
314 unsigned int flags) {
315 # ifdef __NR_copy_file_range
316 return syscall(__NR_copy_file_range, fd_in, off_in, fd_out, off_out, len, flags);
324 /* ======================================================================= */
328 # if defined __i386__
329 # define __NR_bpf 357
330 # elif defined __x86_64__
331 # define __NR_bpf 321
332 # elif defined __aarch64__
333 # define __NR_bpf 280
334 # elif defined __sparc__
335 # define __NR_bpf 349
336 # elif defined __s390__
337 # define __NR_bpf 351
339 # warning "__NR_bpf not defined for your architecture"
345 static inline int bpf(int cmd, union bpf_attr *attr, size_t size) {
347 return (int) syscall(__NR_bpf, cmd, attr, size);
356 /* ======================================================================= */
358 #ifndef __IGNORE_pkey_mprotect
359 # ifndef __NR_pkey_mprotect
360 # if defined __i386__
361 # define __NR_pkey_mprotect 380
362 # elif defined __x86_64__
363 # define __NR_pkey_mprotect 329
364 # elif defined __arm__
365 # define __NR_pkey_mprotect 394
366 # elif defined __aarch64__
367 # define __NR_pkey_mprotect 394
368 # elif defined _MIPS_SIM
369 # if _MIPS_SIM == _MIPS_SIM_ABI32
370 # define __NR_pkey_mprotect 4363
372 # if _MIPS_SIM == _MIPS_SIM_NABI32
373 # define __NR_pkey_mprotect 6327
375 # if _MIPS_SIM == _MIPS_SIM_ABI64
376 # define __NR_pkey_mprotect 5323
378 # elif ! defined(__IGNORE_pkey_mprotect)
379 # warning "__NR_pkey_mprotect not defined for your architecture"