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 #if !HAVE_DECL_PIVOT_ROOT
27 static inline int pivot_root(const char *new_root, const char *put_old) {
28 return syscall(SYS_pivot_root, new_root, put_old);
33 /* ======================================================================= */
35 #if !HAVE_DECL_MEMFD_CREATE
36 # ifndef __NR_memfd_create
37 # if defined __x86_64__
38 # define __NR_memfd_create 319
39 # elif defined __arm__
40 # define __NR_memfd_create 385
41 # elif defined __aarch64__
42 # define __NR_memfd_create 279
43 # elif defined __s390__
44 # define __NR_memfd_create 350
45 # elif defined _MIPS_SIM
46 # if _MIPS_SIM == _MIPS_SIM_ABI32
47 # define __NR_memfd_create 4354
49 # if _MIPS_SIM == _MIPS_SIM_NABI32
50 # define __NR_memfd_create 6318
52 # if _MIPS_SIM == _MIPS_SIM_ABI64
53 # define __NR_memfd_create 5314
55 # elif defined __i386__
56 # define __NR_memfd_create 356
57 # elif defined __arc__
58 # define __NR_memfd_create 279
60 # warning "__NR_memfd_create unknown for your architecture"
64 static inline int memfd_create(const char *name, unsigned int flags) {
65 # ifdef __NR_memfd_create
66 return syscall(__NR_memfd_create, name, flags);
74 /* ======================================================================= */
76 #if !HAVE_DECL_GETRANDOM
77 # ifndef __NR_getrandom
78 # if defined __x86_64__
79 # define __NR_getrandom 318
80 # elif defined(__i386__)
81 # define __NR_getrandom 355
82 # elif defined(__arm__)
83 # define __NR_getrandom 384
84 # elif defined(__aarch64__)
85 # define __NR_getrandom 278
86 # elif defined(__ia64__)
87 # define __NR_getrandom 1339
88 # elif defined(__m68k__)
89 # define __NR_getrandom 352
90 # elif defined(__s390x__)
91 # define __NR_getrandom 349
92 # elif defined(__powerpc__)
93 # define __NR_getrandom 359
94 # elif defined _MIPS_SIM
95 # if _MIPS_SIM == _MIPS_SIM_ABI32
96 # define __NR_getrandom 4353
98 # if _MIPS_SIM == _MIPS_SIM_NABI32
99 # define __NR_getrandom 6317
101 # if _MIPS_SIM == _MIPS_SIM_ABI64
102 # define __NR_getrandom 5313
104 # elif defined(__arc__)
105 # define __NR_getrandom 278
107 # warning "__NR_getrandom unknown for your architecture"
111 static inline int getrandom(void *buffer, size_t count, unsigned flags) {
112 # ifdef __NR_getrandom
113 return syscall(__NR_getrandom, buffer, count, flags);
121 /* ======================================================================= */
123 #if !HAVE_DECL_GETTID
124 static inline pid_t gettid(void) {
125 return (pid_t) syscall(SYS_gettid);
129 /* ======================================================================= */
131 #if !HAVE_DECL_NAME_TO_HANDLE_AT
132 # ifndef __NR_name_to_handle_at
133 # if defined(__x86_64__)
134 # define __NR_name_to_handle_at 303
135 # elif defined(__i386__)
136 # define __NR_name_to_handle_at 341
137 # elif defined(__arm__)
138 # define __NR_name_to_handle_at 370
139 # elif defined(__powerpc__)
140 # define __NR_name_to_handle_at 345
141 # elif defined(__arc__)
142 # define __NR_name_to_handle_at 264
144 # error "__NR_name_to_handle_at is not defined"
149 unsigned int handle_bytes;
151 unsigned char f_handle[0];
154 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
155 # ifdef __NR_name_to_handle_at
156 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
164 /* ======================================================================= */
168 # if defined(__x86_64__)
169 # define __NR_setns 308
170 # elif defined(__i386__)
171 # define __NR_setns 346
172 # elif defined(__arc__)
173 # define __NR_setns 268
175 # error "__NR_setns is not defined"
179 static inline int setns(int fd, int nstype) {
181 return syscall(__NR_setns, fd, nstype);
189 /* ======================================================================= */
191 #if 0 /// UNNEEDED by elogind
192 static inline pid_t raw_getpid(void) {
193 #if defined(__alpha__)
194 return (pid_t) syscall(__NR_getxpid);
196 return (pid_t) syscall(__NR_getpid);
201 /* ======================================================================= */
203 #if !HAVE_DECL_RENAMEAT2
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 /* ======================================================================= */
259 #if !HAVE_DECL_KEYCTL
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_DECL_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);