kernel/sys_ni.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <linux/linkage.h>
   4 #include <linux/errno.h>
   5
   6 #include <asm/unistd.h>
   7
   8 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
   9 /* Architectures may override COND_SYSCALL and COND_SYSCALL_COMPAT */
  10 #include <asm/syscall_wrapper.h>
  11 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
  12
  13 /*  we can't #include <linux/syscalls.h> here,
  14     but tell gcc to not warn with -Wmissing-prototypes  */
  15 asmlinkage long sys_ni_syscall(void);
  16
  17 /*
  18  * Non-implemented system calls get redirected here.
  19  */
  20 asmlinkage long sys_ni_syscall(void)
  21 {
  22         return -ENOSYS;
  23 }
  24
  25 #ifndef COND_SYSCALL
  26 #define COND_SYSCALL(name) cond_syscall(sys_##name)
  27 #endif /* COND_SYSCALL */
  28
  29 #ifndef COND_SYSCALL_COMPAT
  30 #define COND_SYSCALL_COMPAT(name) cond_syscall(compat_sys_##name)
  31 #endif /* COND_SYSCALL_COMPAT */
  32
  33 /*
  34  * This list is kept in the same order as include/uapi/asm-generic/unistd.h.
  35  * Architecture specific entries go below, followed by deprecated or obsolete
  36  * system calls.
  37  */
  38
  39 COND_SYSCALL(io_setup);
  40 COND_SYSCALL_COMPAT(io_setup);
  41 COND_SYSCALL(io_destroy);
  42 COND_SYSCALL(io_submit);
  43 COND_SYSCALL_COMPAT(io_submit);
  44 COND_SYSCALL(io_cancel);
  45 COND_SYSCALL(io_getevents_time32);
  46 COND_SYSCALL(io_getevents);
  47 COND_SYSCALL(io_pgetevents_time32);
  48 COND_SYSCALL(io_pgetevents);
  49 COND_SYSCALL_COMPAT(io_pgetevents_time32);
  50 COND_SYSCALL_COMPAT(io_pgetevents);
  51 COND_SYSCALL(io_uring_setup);
  52 COND_SYSCALL(io_uring_enter);
  53 COND_SYSCALL(io_uring_register);
  54 COND_SYSCALL(lookup_dcookie);
  55 COND_SYSCALL_COMPAT(lookup_dcookie);
  56 COND_SYSCALL(eventfd2);
  57 COND_SYSCALL(epoll_create1);
  58 COND_SYSCALL(epoll_ctl);
  59 COND_SYSCALL(epoll_pwait);
  60 COND_SYSCALL_COMPAT(epoll_pwait);
  61 COND_SYSCALL(epoll_pwait2);
  62 COND_SYSCALL_COMPAT(epoll_pwait2);
  63 COND_SYSCALL(inotify_init1);
  64 COND_SYSCALL(inotify_add_watch);
  65 COND_SYSCALL(inotify_rm_watch);
  66 COND_SYSCALL(ioprio_set);
  67 COND_SYSCALL(ioprio_get);
  68 COND_SYSCALL(flock);
  69 COND_SYSCALL(quotactl);
  70 COND_SYSCALL(quotactl_fd);
  71 COND_SYSCALL(signalfd4);
  72 COND_SYSCALL_COMPAT(signalfd4);
  73 COND_SYSCALL(timerfd_create);
  74 COND_SYSCALL(timerfd_settime);
  75 COND_SYSCALL(timerfd_settime32);
  76 COND_SYSCALL(timerfd_gettime);
  77 COND_SYSCALL(timerfd_gettime32);
  78 COND_SYSCALL(acct);
  79 COND_SYSCALL(capget);
  80 COND_SYSCALL(capset);
  81 /* __ARCH_WANT_SYS_CLONE3 */
  82 COND_SYSCALL(clone3);
  83 COND_SYSCALL(futex);
  84 COND_SYSCALL(futex_time32);
  85 COND_SYSCALL(set_robust_list);
  86 COND_SYSCALL_COMPAT(set_robust_list);
  87 COND_SYSCALL(get_robust_list);
  88 COND_SYSCALL_COMPAT(get_robust_list);
  89 COND_SYSCALL(futex_waitv);
  90 COND_SYSCALL(kexec_load);
  91 COND_SYSCALL_COMPAT(kexec_load);
  92 COND_SYSCALL(init_module);
  93 COND_SYSCALL(delete_module);
  94 COND_SYSCALL(syslog);
  95 COND_SYSCALL(setregid);
  96 COND_SYSCALL(setgid);
  97 COND_SYSCALL(setreuid);
  98 COND_SYSCALL(setuid);
  99 COND_SYSCALL(setresuid);
 100 COND_SYSCALL(getresuid);
 101 COND_SYSCALL(setresgid);
 102 COND_SYSCALL(getresgid);
 103 COND_SYSCALL(setfsuid);
 104 COND_SYSCALL(setfsgid);
 105 COND_SYSCALL(setgroups);
 106 COND_SYSCALL(getgroups);
 107 COND_SYSCALL(mq_open);
 108 COND_SYSCALL_COMPAT(mq_open);
 109 COND_SYSCALL(mq_unlink);
 110 COND_SYSCALL(mq_timedsend);
 111 COND_SYSCALL(mq_timedsend_time32);
 112 COND_SYSCALL(mq_timedreceive);
 113 COND_SYSCALL(mq_timedreceive_time32);
 114 COND_SYSCALL(mq_notify);
 115 COND_SYSCALL_COMPAT(mq_notify);
 116 COND_SYSCALL(mq_getsetattr);
 117 COND_SYSCALL_COMPAT(mq_getsetattr);
 118 COND_SYSCALL(msgget);
 119 COND_SYSCALL(old_msgctl);
 120 COND_SYSCALL(msgctl);
 121 COND_SYSCALL_COMPAT(msgctl);
 122 COND_SYSCALL_COMPAT(old_msgctl);
 123 COND_SYSCALL(msgrcv);
 124 COND_SYSCALL_COMPAT(msgrcv);
 125 COND_SYSCALL(msgsnd);
 126 COND_SYSCALL_COMPAT(msgsnd);
 127 COND_SYSCALL(semget);
 128 COND_SYSCALL(old_semctl);
 129 COND_SYSCALL(semctl);
 130 COND_SYSCALL_COMPAT(semctl);
 131 COND_SYSCALL_COMPAT(old_semctl);
 132 COND_SYSCALL(semtimedop);
 133 COND_SYSCALL(semtimedop_time32);
 134 COND_SYSCALL(semop);
 135 COND_SYSCALL(shmget);
 136 COND_SYSCALL(old_shmctl);
 137 COND_SYSCALL(shmctl);
 138 COND_SYSCALL_COMPAT(shmctl);
 139 COND_SYSCALL_COMPAT(old_shmctl);
 140 COND_SYSCALL(shmat);
 141 COND_SYSCALL_COMPAT(shmat);
 142 COND_SYSCALL(shmdt);
 143 COND_SYSCALL(socket);
 144 COND_SYSCALL(socketpair);
 145 COND_SYSCALL(bind);
 146 COND_SYSCALL(listen);
 147 COND_SYSCALL(accept);
 148 COND_SYSCALL(connect);
 149 COND_SYSCALL(getsockname);
 150 COND_SYSCALL(getpeername);
 151 COND_SYSCALL(setsockopt);
 152 COND_SYSCALL_COMPAT(setsockopt);
 153 COND_SYSCALL(getsockopt);
 154 COND_SYSCALL_COMPAT(getsockopt);
 155 COND_SYSCALL(sendto);
 156 COND_SYSCALL(shutdown);
 157 COND_SYSCALL(recvfrom);
 158 COND_SYSCALL_COMPAT(recvfrom);
 159 COND_SYSCALL(sendmsg);
 160 COND_SYSCALL_COMPAT(sendmsg);
 161 COND_SYSCALL(recvmsg);
 162 COND_SYSCALL_COMPAT(recvmsg);
 163 COND_SYSCALL(mremap);
 164 COND_SYSCALL(add_key);
 165 COND_SYSCALL(request_key);
 166 COND_SYSCALL(keyctl);
 167 COND_SYSCALL_COMPAT(keyctl);
 168 COND_SYSCALL(landlock_create_ruleset);
 169 COND_SYSCALL(landlock_add_rule);
 170 COND_SYSCALL(landlock_restrict_self);
 171 COND_SYSCALL(fadvise64_64);
 172 COND_SYSCALL_COMPAT(fadvise64_64);
 173
 174 /* CONFIG_MMU only */
 175 COND_SYSCALL(swapon);
 176 COND_SYSCALL(swapoff);
 177 COND_SYSCALL(mprotect);
 178 COND_SYSCALL(msync);
 179 COND_SYSCALL(mlock);
 180 COND_SYSCALL(munlock);
 181 COND_SYSCALL(mlockall);
 182 COND_SYSCALL(munlockall);
 183 COND_SYSCALL(mincore);
 184 COND_SYSCALL(madvise);
 185 COND_SYSCALL(process_madvise);
 186 COND_SYSCALL(process_mrelease);
 187 COND_SYSCALL(remap_file_pages);
 188 COND_SYSCALL(mbind);
 189 COND_SYSCALL(get_mempolicy);
 190 COND_SYSCALL(set_mempolicy);
 191 COND_SYSCALL(migrate_pages);
 192 COND_SYSCALL(move_pages);
 193 COND_SYSCALL(set_mempolicy_home_node);
 194 COND_SYSCALL(cachestat);
 195
 196 COND_SYSCALL(perf_event_open);
 197 COND_SYSCALL(accept4);
 198 COND_SYSCALL(recvmmsg);
 199 COND_SYSCALL(recvmmsg_time32);
 200 COND_SYSCALL_COMPAT(recvmmsg_time32);
 201 COND_SYSCALL_COMPAT(recvmmsg_time64);
 202
 203 /*
 204  * Architecture specific syscalls: see further below
 205  */
 206
 207 /* fanotify */
 208 COND_SYSCALL(fanotify_init);
 209 COND_SYSCALL(fanotify_mark);
 210
 211 /* open by handle */
 212 COND_SYSCALL(name_to_handle_at);
 213 COND_SYSCALL(open_by_handle_at);
 214 COND_SYSCALL_COMPAT(open_by_handle_at);
 215
 216 COND_SYSCALL(sendmmsg);
 217 COND_SYSCALL_COMPAT(sendmmsg);
 218 COND_SYSCALL(process_vm_readv);
 219 COND_SYSCALL_COMPAT(process_vm_readv);
 220 COND_SYSCALL(process_vm_writev);
 221 COND_SYSCALL_COMPAT(process_vm_writev);
 222
 223 /* compare kernel pointers */
 224 COND_SYSCALL(kcmp);
 225
 226 COND_SYSCALL(finit_module);
 227
 228 /* operate on Secure Computing state */
 229 COND_SYSCALL(seccomp);
 230
 231 COND_SYSCALL(memfd_create);
 232
 233 /* access BPF programs and maps */
 234 COND_SYSCALL(bpf);
 235
 236 /* execveat */
 237 COND_SYSCALL(execveat);
 238
 239 COND_SYSCALL(userfaultfd);
 240
 241 /* membarrier */
 242 COND_SYSCALL(membarrier);
 243
 244 COND_SYSCALL(mlock2);
 245
 246 COND_SYSCALL(copy_file_range);
 247
 248 /* memory protection keys */
 249 COND_SYSCALL(pkey_mprotect);
 250 COND_SYSCALL(pkey_alloc);
 251 COND_SYSCALL(pkey_free);
 252
 253 /* memfd_secret */
 254 COND_SYSCALL(memfd_secret);
 255
 256 /*
 257  * Architecture specific weak syscall entries.
 258  */
 259
 260 /* pciconfig: alpha, arm, arm64, ia64, sparc */
 261 COND_SYSCALL(pciconfig_read);
 262 COND_SYSCALL(pciconfig_write);
 263 COND_SYSCALL(pciconfig_iobase);
 264
 265 /* sys_socketcall: arm, mips, x86, ... */
 266 COND_SYSCALL(socketcall);
 267 COND_SYSCALL_COMPAT(socketcall);
 268
 269 /* compat syscalls for arm64, x86, ... */
 270 COND_SYSCALL_COMPAT(fanotify_mark);
 271
 272 /* x86 */
 273 COND_SYSCALL(vm86old);
 274 COND_SYSCALL(modify_ldt);
 275 COND_SYSCALL(vm86);
 276 COND_SYSCALL(kexec_file_load);
 277 COND_SYSCALL(map_shadow_stack);
 278
 279 /* s390 */
 280 COND_SYSCALL(s390_pci_mmio_read);
 281 COND_SYSCALL(s390_pci_mmio_write);
 282 COND_SYSCALL(s390_ipc);
 283 COND_SYSCALL_COMPAT(s390_ipc);
 284
 285 /* powerpc */
 286 COND_SYSCALL(rtas);
 287 COND_SYSCALL(spu_run);
 288 COND_SYSCALL(spu_create);
 289 COND_SYSCALL(subpage_prot);
 290
 291
 292 /*
 293  * Deprecated system calls which are still defined in
 294  * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
 295  */
 296
 297 /* __ARCH_WANT_SYSCALL_NO_FLAGS */
 298 COND_SYSCALL(epoll_create);
 299 COND_SYSCALL(inotify_init);
 300 COND_SYSCALL(eventfd);
 301 COND_SYSCALL(signalfd);
 302 COND_SYSCALL_COMPAT(signalfd);
 303
 304 /* __ARCH_WANT_SYSCALL_OFF_T */
 305 COND_SYSCALL(fadvise64);
 306
 307 /* __ARCH_WANT_SYSCALL_DEPRECATED */
 308 COND_SYSCALL(epoll_wait);
 309 COND_SYSCALL(recv);
 310 COND_SYSCALL_COMPAT(recv);
 311 COND_SYSCALL(send);
 312 COND_SYSCALL(uselib);
 313
 314 /* optional: time32 */
 315 COND_SYSCALL(time32);
 316 COND_SYSCALL(stime32);
 317 COND_SYSCALL(utime32);
 318 COND_SYSCALL(adjtimex_time32);
 319 COND_SYSCALL(sched_rr_get_interval_time32);
 320 COND_SYSCALL(nanosleep_time32);
 321 COND_SYSCALL(rt_sigtimedwait_time32);
 322 COND_SYSCALL_COMPAT(rt_sigtimedwait_time32);
 323 COND_SYSCALL(timer_settime32);
 324 COND_SYSCALL(timer_gettime32);
 325 COND_SYSCALL(clock_settime32);
 326 COND_SYSCALL(clock_gettime32);
 327 COND_SYSCALL(clock_getres_time32);
 328 COND_SYSCALL(clock_nanosleep_time32);
 329 COND_SYSCALL(utimes_time32);
 330 COND_SYSCALL(futimesat_time32);
 331 COND_SYSCALL(pselect6_time32);
 332 COND_SYSCALL_COMPAT(pselect6_time32);
 333 COND_SYSCALL(ppoll_time32);
 334 COND_SYSCALL_COMPAT(ppoll_time32);
 335 COND_SYSCALL(utimensat_time32);
 336 COND_SYSCALL(clock_adjtime32);
 337
 338 /*
 339  * The syscalls below are not found in include/uapi/asm-generic/unistd.h
 340  */
 341
 342 /* obsolete: SGETMASK_SYSCALL */
 343 COND_SYSCALL(sgetmask);
 344 COND_SYSCALL(ssetmask);
 345
 346 /* obsolete: SYSFS_SYSCALL */
 347 COND_SYSCALL(sysfs);
 348
 349 /* obsolete: __ARCH_WANT_SYS_IPC */
 350 COND_SYSCALL(ipc);
 351 COND_SYSCALL_COMPAT(ipc);
 352
 353 /* obsolete: UID16 */
 354 COND_SYSCALL(chown16);
 355 COND_SYSCALL(fchown16);
 356 COND_SYSCALL(getegid16);
 357 COND_SYSCALL(geteuid16);
 358 COND_SYSCALL(getgid16);
 359 COND_SYSCALL(getgroups16);
 360 COND_SYSCALL(getresgid16);
 361 COND_SYSCALL(getresuid16);
 362 COND_SYSCALL(getuid16);
 363 COND_SYSCALL(lchown16);
 364 COND_SYSCALL(setfsgid16);
 365 COND_SYSCALL(setfsuid16);
 366 COND_SYSCALL(setgid16);
 367 COND_SYSCALL(setgroups16);
 368 COND_SYSCALL(setregid16);
 369 COND_SYSCALL(setresgid16);
 370 COND_SYSCALL(setresuid16);
 371 COND_SYSCALL(setreuid16);
 372 COND_SYSCALL(setuid16);
 373
 374 /* restartable sequence */
 375 COND_SYSCALL(rseq);