1#ifndef _INTERNAL_SYSCALL_H
2#define _INTERNAL_SYSCALL_H
3
4#include <features.h>
5#include <errno.h>
6#include <sys/syscall.h>
7#include "syscall_arch.h"
8
9#ifndef SYSCALL_RLIM_INFINITY
10#define SYSCALL_RLIM_INFINITY (~0ULL)
11#endif
12
13#ifndef SYSCALL_MMAP2_UNIT
14#define SYSCALL_MMAP2_UNIT 4096ULL
15#endif
16
17#ifndef __SYSCALL_LL_PRW
18#define __SYSCALL_LL_PRW(x) __SYSCALL_LL_O(x)
19#endif
20
21#ifndef __scc
22#define __scc(X) ((long) (X))
23typedef long syscall_arg_t;
24#endif
25
26hidden long __syscall_ret(unsigned long),
27 __syscall_cp(syscall_arg_t, syscall_arg_t, syscall_arg_t, syscall_arg_t,
28 syscall_arg_t, syscall_arg_t, syscall_arg_t);
29
30#define __syscall1(n,a) __syscall1(n,__scc(a))
31#define __syscall2(n,a,b) __syscall2(n,__scc(a),__scc(b))
32#define __syscall3(n,a,b,c) __syscall3(n,__scc(a),__scc(b),__scc(c))
33#define __syscall4(n,a,b,c,d) __syscall4(n,__scc(a),__scc(b),__scc(c),__scc(d))
34#define __syscall5(n,a,b,c,d,e) __syscall5(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e))
35#define __syscall6(n,a,b,c,d,e,f) __syscall6(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f))
36#define __syscall7(n,a,b,c,d,e,f,g) __syscall7(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f),__scc(g))
37
38#define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
39#define __SYSCALL_NARGS(...) __SYSCALL_NARGS_X(__VA_ARGS__,7,6,5,4,3,2,1,0,)
40#define __SYSCALL_CONCAT_X(a,b) a##b
41#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X(a,b)
42#define __SYSCALL_DISP(b,...) __SYSCALL_CONCAT(b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
43
44#define __syscall(...) __SYSCALL_DISP(__syscall,__VA_ARGS__)
45#define syscall(...) __syscall_ret(__syscall(__VA_ARGS__))
46
47#define socketcall(nm,a,b,c,d,e,f) __syscall_ret(__socketcall(nm,a,b,c,d,e,f))
48#define socketcall_cp(nm,a,b,c,d,e,f) __syscall_ret(__socketcall_cp(nm,a,b,c,d,e,f))
49
50#define __syscall_cp0(n) (__syscall_cp)(n,0,0,0,0,0,0)
51#define __syscall_cp1(n,a) (__syscall_cp)(n,__scc(a),0,0,0,0,0)
52#define __syscall_cp2(n,a,b) (__syscall_cp)(n,__scc(a),__scc(b),0,0,0,0)
53#define __syscall_cp3(n,a,b,c) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),0,0,0)
54#define __syscall_cp4(n,a,b,c,d) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),0,0)
55#define __syscall_cp5(n,a,b,c,d,e) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),0)
56#define __syscall_cp6(n,a,b,c,d,e,f) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f))
57
58#define __syscall_cp(...) __SYSCALL_DISP(__syscall_cp,__VA_ARGS__)
59#define syscall_cp(...) __syscall_ret(__syscall_cp(__VA_ARGS__))
60
61static inline long __alt_socketcall(int sys, int sock, int cp, syscall_arg_t a, syscall_arg_t b, syscall_arg_t c, syscall_arg_t d, syscall_arg_t e, syscall_arg_t f)
62{
63 long r;
64 if (cp) r = __syscall_cp(sys, a, b, c, d, e, f);
65 else r = __syscall(sys, a, b, c, d, e, f);
66 if (r != -ENOSYS) return r;
67#ifdef SYS_socketcall
68 if (cp) r = __syscall_cp(SYS_socketcall, sock, ((long[6]){a, b, c, d, e, f}));
69 else r = __syscall(SYS_socketcall, sock, ((long[6]){a, b, c, d, e, f}));
70#endif
71 return r;
72}
73#define __socketcall(nm, a, b, c, d, e, f) __alt_socketcall(SYS_##nm, __SC_##nm, 0, \
74 __scc(a), __scc(b), __scc(c), __scc(d), __scc(e), __scc(f))
75#define __socketcall_cp(nm, a, b, c, d, e, f) __alt_socketcall(SYS_##nm, __SC_##nm, 1, \
76 __scc(a), __scc(b), __scc(c), __scc(d), __scc(e), __scc(f))
77
78/* fixup legacy 16-bit junk */
79
80#ifdef SYS_getuid32
81#undef SYS_lchown
82#undef SYS_getuid
83#undef SYS_getgid
84#undef SYS_geteuid
85#undef SYS_getegid
86#undef SYS_setreuid
87#undef SYS_setregid
88#undef SYS_getgroups
89#undef SYS_setgroups
90#undef SYS_fchown
91#undef SYS_setresuid
92#undef SYS_getresuid
93#undef SYS_setresgid
94#undef SYS_getresgid
95#undef SYS_chown
96#undef SYS_setuid
97#undef SYS_setgid
98#undef SYS_setfsuid
99#undef SYS_setfsgid
100#define SYS_lchown SYS_lchown32
101#define SYS_getuid SYS_getuid32
102#define SYS_getgid SYS_getgid32
103#define SYS_geteuid SYS_geteuid32
104#define SYS_getegid SYS_getegid32
105#define SYS_setreuid SYS_setreuid32
106#define SYS_setregid SYS_setregid32
107#define SYS_getgroups SYS_getgroups32
108#define SYS_setgroups SYS_setgroups32
109#define SYS_fchown SYS_fchown32
110#define SYS_setresuid SYS_setresuid32
111#define SYS_getresuid SYS_getresuid32
112#define SYS_setresgid SYS_setresgid32
113#define SYS_getresgid SYS_getresgid32
114#define SYS_chown SYS_chown32
115#define SYS_setuid SYS_setuid32
116#define SYS_setgid SYS_setgid32
117#define SYS_setfsuid SYS_setfsuid32
118#define SYS_setfsgid SYS_setfsgid32
119#endif
120
121
122/* fixup legacy 32-bit-vs-lfs64 junk */
123
124#ifdef SYS_fcntl64
125#undef SYS_fcntl
126#define SYS_fcntl SYS_fcntl64
127#endif
128
129#ifdef SYS_getdents64
130#undef SYS_getdents
131#define SYS_getdents SYS_getdents64
132#endif
133
134#ifdef SYS_ftruncate64
135#undef SYS_ftruncate
136#undef SYS_truncate
137#define SYS_ftruncate SYS_ftruncate64
138#define SYS_truncate SYS_truncate64
139#endif
140
141#ifdef SYS_stat64
142#undef SYS_stat
143#define SYS_stat SYS_stat64
144#endif
145
146#ifdef SYS_fstat64
147#undef SYS_fstat
148#define SYS_fstat SYS_fstat64
149#endif
150
151#ifdef SYS_lstat64
152#undef SYS_lstat
153#define SYS_lstat SYS_lstat64
154#endif
155
156#ifdef SYS_statfs64
157#undef SYS_statfs
158#define SYS_statfs SYS_statfs64
159#endif
160
161#ifdef SYS_fstatfs64
162#undef SYS_fstatfs
163#define SYS_fstatfs SYS_fstatfs64
164#endif
165
166#if defined(SYS_newfstatat)
167#undef SYS_fstatat
168#define SYS_fstatat SYS_newfstatat
169#elif defined(SYS_fstatat64)
170#undef SYS_fstatat
171#define SYS_fstatat SYS_fstatat64
172#endif
173
174#ifdef SYS_ugetrlimit
175#undef SYS_getrlimit
176#define SYS_getrlimit SYS_ugetrlimit
177#endif
178
179#ifdef SYS__newselect
180#undef SYS_select
181#define SYS_select SYS__newselect
182#endif
183
184#ifdef SYS_pread64
185#undef SYS_pread
186#undef SYS_pwrite
187#define SYS_pread SYS_pread64
188#define SYS_pwrite SYS_pwrite64
189#endif
190
191#ifdef SYS_fadvise64_64
192#undef SYS_fadvise
193#define SYS_fadvise SYS_fadvise64_64
194#elif defined(SYS_fadvise64)
195#undef SYS_fadvise
196#define SYS_fadvise SYS_fadvise64
197#endif
198
199#ifdef SYS_sendfile64
200#undef SYS_sendfile
201#define SYS_sendfile SYS_sendfile64
202#endif
203
204#ifdef SYS_timer_settime32
205#define SYS_timer_settime SYS_timer_settime32
206#endif
207
208#ifdef SYS_timer_gettime32
209#define SYS_timer_gettime SYS_timer_gettime32
210#endif
211
212#ifdef SYS_timerfd_settime32
213#define SYS_timerfd_settime SYS_timerfd_settime32
214#endif
215
216#ifdef SYS_timerfd_gettime32
217#define SYS_timerfd_gettime SYS_timerfd_gettime32
218#endif
219
220#ifdef SYS_clock_settime32
221#define SYS_clock_settime SYS_clock_settime32
222#endif
223
224#ifdef SYS_clock_gettime32
225#define SYS_clock_gettime SYS_clock_gettime32
226#endif
227
228#ifdef SYS_clock_getres_time32
229#define SYS_clock_getres SYS_clock_getres_time32
230#endif
231
232#ifdef SYS_clock_nanosleep_time32
233#define SYS_clock_nanosleep SYS_clock_nanosleep_time32
234#endif
235
236#ifdef SYS_gettimeofday_time32
237#define SYS_gettimeofday SYS_gettimeofday_time32
238#endif
239
240#ifdef SYS_settimeofday_time32
241#define SYS_settimeofday SYS_settimeofday_time32
242#endif
243
244/* Ensure that the plain syscall names are defined even for "time64-only"
245 * archs. These facilitate callers passing null time arguments, and make
246 * tests for establishing which to use/fallback-to more consistent when
247 * they do need to be called with time arguments. */
248
249#ifndef SYS_clock_gettime
250#define SYS_clock_gettime SYS_clock_gettime64
251#endif
252
253#ifndef SYS_clock_settime
254#define SYS_clock_settime SYS_clock_settime64
255#endif
256
257#ifndef SYS_clock_adjtime
258#define SYS_clock_adjtime SYS_clock_adjtime64
259#endif
260
261#ifndef SYS_clock_getres
262#define SYS_clock_getres SYS_clock_getres_time64
263#endif
264
265#ifndef SYS_clock_nanosleep
266#define SYS_clock_nanosleep SYS_clock_nanosleep_time64
267#endif
268
269#ifndef SYS_timer_gettime
270#define SYS_timer_gettime SYS_timer_gettime64
271#endif
272
273#ifndef SYS_timer_settime
274#define SYS_timer_settime SYS_timer_settime64
275#endif
276
277#ifndef SYS_timerfd_gettime
278#define SYS_timerfd_gettime SYS_timerfd_gettime64
279#endif
280
281#ifndef SYS_timerfd_settime
282#define SYS_timerfd_settime SYS_timerfd_settime64
283#endif
284
285#ifndef SYS_utimensat
286#define SYS_utimensat SYS_utimensat_time64
287#endif
288
289#ifndef SYS_pselect6
290#define SYS_pselect6 SYS_pselect6_time64
291#endif
292
293#ifndef SYS_ppoll
294#define SYS_ppoll SYS_ppoll_time64
295#endif
296
297#ifndef SYS_recvmmsg
298#define SYS_recvmmsg SYS_recvmmsg_time64
299#endif
300
301#ifndef SYS_mq_timedsend
302#define SYS_mq_timedsend SYS_mq_timedsend_time64
303#endif
304
305#ifndef SYS_mq_timedreceive
306#define SYS_mq_timedreceive SYS_mq_timedreceive_time64
307#endif
308
309/* SYS_semtimedop omitted because SYS_ipc may provide it */
310
311#ifndef SYS_rt_sigtimedwait
312#define SYS_rt_sigtimedwait SYS_rt_sigtimedwait_time64
313#endif
314
315#ifndef SYS_futex
316#define SYS_futex SYS_futex_time64
317#endif
318
319#ifndef SYS_sched_rr_get_interval
320#define SYS_sched_rr_get_interval SYS_sched_rr_get_interval_time64
321#endif
322
323
324
325
326/* socketcall calls */
327
328#define __SC_socket 1
329#define __SC_bind 2
330#define __SC_connect 3
331#define __SC_listen 4
332#define __SC_accept 5
333#define __SC_getsockname 6
334#define __SC_getpeername 7
335#define __SC_socketpair 8
336#define __SC_send 9
337#define __SC_recv 10
338#define __SC_sendto 11
339#define __SC_recvfrom 12
340#define __SC_shutdown 13
341#define __SC_setsockopt 14
342#define __SC_getsockopt 15
343#define __SC_sendmsg 16
344#define __SC_recvmsg 17
345#define __SC_accept4 18
346#define __SC_recvmmsg 19
347#define __SC_sendmmsg 20
348
349/* This is valid only because all socket syscalls are made via
350 * socketcall, which always fills unused argument slots with zeros. */
351#ifndef SYS_accept
352#define SYS_accept SYS_accept4
353#endif
354
355#ifndef SO_RCVTIMEO_OLD
356#define SO_RCVTIMEO_OLD 20
357#endif
358#ifndef SO_SNDTIMEO_OLD
359#define SO_SNDTIMEO_OLD 21
360#endif
361
362#define SO_TIMESTAMP_OLD 29
363#define SO_TIMESTAMPNS_OLD 35
364#define SO_TIMESTAMPING_OLD 37
365#define SCM_TIMESTAMP_OLD SO_TIMESTAMP_OLD
366#define SCM_TIMESTAMPNS_OLD SO_TIMESTAMPNS_OLD
367#define SCM_TIMESTAMPING_OLD SO_TIMESTAMPING_OLD
368
369#ifndef SIOCGSTAMP_OLD
370#define SIOCGSTAMP_OLD 0x8906
371#endif
372#ifndef SIOCGSTAMPNS_OLD
373#define SIOCGSTAMPNS_OLD 0x8907
374#endif
375
376#ifdef SYS_open
377#define __sys_open2(x,pn,fl) __syscall2(SYS_open, pn, (fl)|O_LARGEFILE)
378#define __sys_open3(x,pn,fl,mo) __syscall3(SYS_open, pn, (fl)|O_LARGEFILE, mo)
379#define __sys_open_cp2(x,pn,fl) __syscall_cp2(SYS_open, pn, (fl)|O_LARGEFILE)
380#define __sys_open_cp3(x,pn,fl,mo) __syscall_cp3(SYS_open, pn, (fl)|O_LARGEFILE, mo)
381#else
382#define __sys_open2(x,pn,fl) __syscall3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE)
383#define __sys_open3(x,pn,fl,mo) __syscall4(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo)
384#define __sys_open_cp2(x,pn,fl) __syscall_cp3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE)
385#define __sys_open_cp3(x,pn,fl,mo) __syscall_cp4(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo)
386#endif
387
388#define __sys_open(...) __SYSCALL_DISP(__sys_open,,__VA_ARGS__)
389#define sys_open(...) __syscall_ret(__sys_open(__VA_ARGS__))
390
391#define __sys_open_cp(...) __SYSCALL_DISP(__sys_open_cp,,__VA_ARGS__)
392#define sys_open_cp(...) __syscall_ret(__sys_open_cp(__VA_ARGS__))
393
394#ifdef SYS_wait4
395#define __sys_wait4(a,b,c,d) __syscall(SYS_wait4,a,b,c,d)
396#define __sys_wait4_cp(a,b,c,d) __syscall_cp(SYS_wait4,a,b,c,d)
397#else
398hidden long __emulate_wait4(int, int *, int, void *, int);
399#define __sys_wait4(a,b,c,d) __emulate_wait4(a,b,c,d,0)
400#define __sys_wait4_cp(a,b,c,d) __emulate_wait4(a,b,c,d,1)
401#endif
402
403#define sys_wait4(a,b,c,d) __syscall_ret(__sys_wait4(a,b,c,d))
404#define sys_wait4_cp(a,b,c,d) __syscall_ret(__sys_wait4_cp(a,b,c,d))
405
406hidden void __procfdname(char __buf[static 15+3*sizeof(int)], unsigned);
407
408hidden void *__vdsosym(const char *, const char *);
409
410#endif