1# This file is used to automatically generate bionic's system call stubs. 2# 3# It is processed by a python script named gensyscalls.py, 4# normally run via the genrules in libc/Android.bp. 5# 6# Each non-blank, non-comment line has the following format: 7# 8# func_name[|alias_list][:syscall_name[:socketcall_id]]([parameter_list]) arch_list 9# 10# where: 11# arch_list ::= "all" | arches 12# arches ::= arch | arch "," arches 13# arch ::= "arm" | "arm64" | "riscv64" | "x86" | "x86_64" | "lp32" | "lp64" 14# 15# syscall_name corresponds to the name of the syscall, which may differ from 16# the exported function name func_name. For example: the exit_group syscall 17# is exported by libc as the _exit() function, not exit() (which does more 18# work before calling _exit()). 19# 20# alias_list is optional comma-separated list of function aliases. 21# For example, the traditional _exit() function has a C99 alias _Exit(). 22# 23# No return type is specified, because it's not needed. 24# 25# The socketcall_id parameter supports x86's 26# https://man7.org/linux/man-pages/man2/socketcall.2.html 27# and can be ignored for all other syscalls and architectures. 28# 29# The number of registers required for the arguments is computed by the script, 30# based on the parameter list given here. It handles the need for register 31# pairs for 64-bit arguments on ILP32, and also arm32's requirement for such 32# pairs to start on an even register. This means that it's important to get 33# these types right! 34# 35 36# Calls that have historical 16-bit variants camping on the best names (CONFIG_UID16). 37getuid:getuid32() lp32 38getuid:getuid() lp64 39getgid:getgid32() lp32 40getgid:getgid() lp64 41geteuid:geteuid32() lp32 42geteuid:geteuid() lp64 43getegid:getegid32() lp32 44getegid:getegid() lp64 45getresuid:getresuid32(uid_t* ruid, uid_t* euid, uid_t* suid) lp32 46getresuid:getresuid(uid_t* ruid, uid_t* euid, uid_t* suid) lp64 47getresgid:getresgid32(gid_t* rgid, gid_t* egid, gid_t* sgid) lp32 48getresgid:getresgid(gid_t* rgid, gid_t* egid, gid_t* sgid) lp64 49getgroups:getgroups32(int, gid_t*) lp32 50getgroups:getgroups(int, gid_t*) lp64 51setgid:setgid32(gid_t) lp32 52setgid:setgid(gid_t) lp64 53setuid:setuid32(uid_t) lp32 54setuid:setuid(uid_t) lp64 55setreuid:setreuid32(uid_t, uid_t) lp32 56setreuid:setreuid(uid_t, uid_t) lp64 57setresuid:setresuid32(uid_t, uid_t, uid_t) lp32 58setresuid:setresuid(uid_t, uid_t, uid_t) lp64 59setresgid:setresgid32(gid_t, gid_t, gid_t) lp32 60setresgid:setresgid(gid_t, gid_t, gid_t) lp64 61setfsgid:setfsgid32(gid_t) lp32 62setfsgid:setfsgid(gid_t) lp64 63setfsuid:setfsuid32(uid_t) lp32 64setfsuid:setfsuid(uid_t) lp64 65 66readahead(int, off64_t, size_t) all 67getpgid(pid_t) all 68getppid() all 69getsid(pid_t) all 70setsid() all 71kill(pid_t, int) all 72tgkill(pid_t tgid, pid_t tid, int sig) all 73 74__brk:brk(void*) all 75execve(const char*, char* const*, char* const*) all 76__ptrace:ptrace(int request, int pid, void* addr, void* data) all 77 78# <sys/resource.h> 79getrusage(int, struct rusage*) all 80__getpriority:getpriority(int, id_t) all 81setpriority(int, id_t, int) all 82# On LP64, rlimit and rlimit64 are the same. 83# On 32-bit systems we use prlimit64 to implement the rlimit64 functions. 84getrlimit:ugetrlimit(int, struct rlimit*) lp32 85getrlimit|getrlimit64(int, struct rlimit*) lp64 86setrlimit(int, const struct rlimit*) lp32 87setrlimit|setrlimit64(int, const struct rlimit*) lp64 88prlimit64|prlimit(pid_t, int, struct rlimit64*, const struct rlimit64*) lp64 89prlimit64(pid_t, int, struct rlimit64*, const struct rlimit64*) lp32 90 91setgroups:setgroups32(int, const gid_t*) lp32 92setgroups:setgroups(int, const gid_t*) lp64 93setpgid(pid_t, pid_t) all 94setregid:setregid32(gid_t, gid_t) lp32 95setregid:setregid(gid_t, gid_t) lp64 96chroot(const char*) all 97prctl(int, unsigned long, unsigned long, unsigned long, unsigned long) all 98capget(cap_user_header_t header, cap_user_data_t data) all 99capset(cap_user_header_t header, const cap_user_data_t data) all 100sigaltstack(const stack_t*, stack_t*) all 101acct(const char* filepath) all 102 103# file descriptors 104read(int, void*, size_t) all 105write(int, const void*, size_t) all 106pread64(int, void*, size_t, off64_t) lp32 107pread64|pread(int, void*, size_t, off_t) lp64 108pwrite64(int, void*, size_t, off64_t) lp32 109pwrite64|pwrite(int, void*, size_t, off_t) lp64 110 111# On LP32, preadv/pwritev don't use off64_t --- they use pairs of 32-bit 112# arguments to avoid problems on architectures like arm32 where 64-bit arguments 113# must be in a register pair starting with an even-numbered register. 114# See linux/fs/read_write.c and https://lwn.net/Articles/311630/. 115# Note that there's an unused always-0 second long even on LP64! 116__preadv64:preadv(int, const struct iovec*, int, long, long) all 117__pwritev64:pwritev(int, const struct iovec*, int, long, long) all 118__preadv64v2:preadv2(int, const struct iovec*, int, long, long, int) all 119__pwritev64v2:pwritev2(int, const struct iovec*, int, long, long, int) all 120 121__close:close(int) all 122close_range(unsigned int, unsigned int, int) all 123copy_file_range(int, off64_t*, int, off64_t*, size_t, unsigned int) all 124__getpid:getpid() all 125memfd_create(const char*, unsigned) all 126munmap(void*, size_t) all 127msync(const void*, size_t, int) all 128mprotect(const void*, size_t, int) all 129madvise(void*, size_t, int) all 130process_madvise(int, const struct iovec*, size_t, int, unsigned int) all 131mlock(const void* addr, size_t len) all 132mlock2(const void* addr, size_t len, int flags) all 133munlock(const void* addr, size_t len) all 134mlockall(int flags) all 135mseal(void*, size_t, unsigned long) lp64 136munlockall() all 137mincore(void* start, size_t length, unsigned char* vec) all 138__ioctl:ioctl(int, int, void*) all 139readv(int, const struct iovec*, int) all 140writev(int, const struct iovec*, int) all 141__fcntl64:fcntl64(int, int, void*) lp32 142__fcntl:fcntl(int, int, void*) lp64 143flock(int, int) all 144__fchmod:fchmod(int, mode_t) all 145__pipe2:pipe2(int*, int) all 146__dup:dup(int) all 147__dup3:dup3(int, int, int) all 148fsync(int) all 149fdatasync(int) all 150fchown:fchown32(int, uid_t, gid_t) lp32 151fchown:fchown(int, uid_t, gid_t) lp64 152sync(void) all 153syncfs(int) all 154__fsetxattr:fsetxattr(int, const char*, const void*, size_t, int) all 155__fgetxattr:fgetxattr(int, const char*, void*, size_t) all 156__flistxattr:flistxattr(int, char*, size_t) all 157fremovexattr(int, const char*) all 158 159__getdents64:getdents64(unsigned int, struct dirent*, unsigned int) all 160 161__openat:openat(int, const char*, int, mode_t) all 162__faccessat:faccessat(int, const char*, int) all 163__fchmodat:fchmodat(int, const char*, mode_t) all 164fchownat(int, const char*, uid_t, gid_t, int) all 165fstatat64|fstatat:fstatat64(int, const char*, struct stat*, int) lp32 166fstatat64|fstatat:newfstatat(int, const char*, struct stat*, int) lp64 167linkat(int, const char*, int, const char*, int) all 168mkdirat(int, const char*, mode_t) all 169mknodat(int, const char*, mode_t, dev_t) all 170readlinkat(int, const char*, char*, size_t) all 171renameat2(int, const char*, int, const char*, unsigned) all 172symlinkat(const char*, int, const char*) all 173unlinkat(int, const char*, int) all 174utimensat(int, const char*, const struct timespec times[2], int) all 175 176# Paired off_t/off64_t system calls. On 64-bit systems, 177# sizeof(off_t) == sizeof(off64_t), so there we emit two symbols that are 178# aliases. On 32-bit systems, we have two different system calls. 179# That means that every system call in this section should take three lines. 180lseek(int, off_t, int) lp32 181__llseek:_llseek(int, unsigned long, unsigned long, off64_t*, int) lp32 182lseek|lseek64(int, off_t, int) lp64 183sendfile(int out_fd, int in_fd, off_t* offset, size_t count) lp32 184sendfile64(int out_fd, int in_fd, off64_t* offset, size_t count) lp32 185sendfile|sendfile64(int out_fd, int in_fd, off_t* offset, size_t count) lp64 186truncate(const char*, off_t) lp32 187truncate64(const char*, off64_t) lp32 188truncate|truncate64(const char*, off_t) lp64 189# (fallocate only gets two lines because there is no 32-bit variant.) 190fallocate64:fallocate(int, int, off64_t, off64_t) lp32 191fallocate|fallocate64(int, int, off_t, off_t) lp64 192# (ftruncate only gets two lines because 32-bit bionic only uses the 64-bit call.) 193ftruncate64(int, off64_t) lp32 194ftruncate|ftruncate64(int, off_t) lp64 195# (mmap only gets two lines because 32-bit bionic only uses the 64-bit call.) 196__mmap2:mmap2(void*, size_t, int, int, int, long) lp32 197mmap|mmap64(void*, size_t, int, int, int, off_t) lp64 198 199# mremap is in C++ for 32-bit so we can add the PTRDIFF_MAX check. 200__mremap:mremap(void*, size_t, size_t, int, void*) lp32 201mremap(void*, size_t, size_t, int, void*) lp64 202 203# posix_fadvise64 is awkward: arm has shuffled arguments, 204# the POSIX functions don't set errno, and no architecture has posix_fadvise. 205__arm_fadvise64_64:arm_fadvise64_64(int, int, off64_t, off64_t) arm 206__fadvise64:fadvise64_64(int, off64_t, off64_t, int) x86 207__fadvise64:fadvise64(int, off64_t, off64_t, int) lp64 208 209__fstatfs64:fstatfs64(int, size_t, struct statfs*) lp32 210__fstatfs:fstatfs(int, struct statfs*) lp64 211__statfs64:statfs64(const char*, size_t, struct statfs*) lp32 212__statfs:statfs(const char*, struct statfs*) lp64 213 214fstat64|fstat:fstat64(int, struct stat*) lp32 215fstat64|fstat:fstat(int, struct stat*) lp64 216 217# file system 218chdir(const char*) all 219mount(const char*, const char*, const char*, unsigned long, const void*) all 220umount2(const char*, int) all 221__getcwd:getcwd(char* buf, size_t size) all 222fchdir(int) all 223setxattr(const char*, const char*, const void*, size_t, int) all 224lsetxattr(const char*, const char*, const void*, size_t, int) all 225getxattr(const char*, const char*, void*, size_t) all 226lgetxattr(const char*, const char*, void*, size_t) all 227listxattr(const char*, char*, size_t) all 228llistxattr(const char*, char*, size_t) all 229removexattr(const char*, const char*) all 230lremovexattr(const char*, const char*) all 231statx(int, const char*, int, unsigned, struct statx*) all 232swapon(const char*, int) all 233swapoff(const char*) all 234 235# time 236settimeofday(const struct timeval*, const struct timezone*) all 237times(struct tms*) all 238nanosleep(const struct timespec*, struct timespec*) all 239clock_settime(clockid_t, const struct timespec*) all 240__clock_nanosleep:clock_nanosleep(clockid_t, int, const struct timespec*, struct timespec*) all 241getitimer(int, struct itimerval*) all 242setitimer(int, const struct itimerval*, struct itimerval*) all 243__timer_create:timer_create(clockid_t clockid, struct sigevent* evp, __kernel_timer_t* timerid) all 244__timer_settime:timer_settime(__kernel_timer_t, int, const struct itimerspec*, struct itimerspec*) all 245__timer_gettime:timer_gettime(__kernel_timer_t, struct itimerspec*) all 246__timer_getoverrun:timer_getoverrun(__kernel_timer_t) all 247__timer_delete:timer_delete(__kernel_timer_t) all 248timerfd_create(clockid_t, int) all 249timerfd_settime(int, int, const struct itimerspec*, struct itimerspec*) all 250timerfd_gettime(int, struct itimerspec*) all 251adjtimex(struct timex*) all 252clock_adjtime(clockid_t, struct timex*) all 253 254# signals 255__sigaction:sigaction(int, const struct sigaction*, struct sigaction*) lp32 256__rt_sigaction:rt_sigaction(int, const struct sigaction*, struct sigaction*, size_t) all 257__rt_sigpending:rt_sigpending(sigset64_t*, size_t) all 258__rt_sigprocmask:rt_sigprocmask(int, const sigset64_t*, sigset64_t*, size_t) all 259__rt_sigsuspend:rt_sigsuspend(const sigset64_t*, size_t) all 260__rt_sigtimedwait:rt_sigtimedwait(const sigset64_t*, siginfo_t*, const timespec*, size_t) all 261__rt_sigqueueinfo:rt_sigqueueinfo(pid_t, int, siginfo_t*) all 262__signalfd4:signalfd4(int, const sigset64_t*, size_t, int) all 263 264# sockets 265__socket:socket(int, int, int) arm,lp64 266__socketpair:socketpair(int, int, int, int*) arm,lp64 267bind(int, struct sockaddr*, socklen_t) arm,lp64 268__connect:connect(int, struct sockaddr*, socklen_t) arm,lp64 269listen(int, int) arm,lp64 270__accept4:accept4(int, struct sockaddr*, socklen_t*, int) arm,lp64 271getsockname(int, struct sockaddr*, socklen_t*) arm,lp64 272getpeername(int, struct sockaddr*, socklen_t*) arm,lp64 273__sendto:sendto(int, const void*, size_t, int, const struct sockaddr*, socklen_t) arm,lp64 274recvfrom(int, void*, size_t, unsigned int, struct sockaddr*, socklen_t*) arm,lp64 275shutdown(int, int) arm,lp64 276setsockopt(int, int, int, const void*, socklen_t) arm,lp64 277getsockopt(int, int, int, void*, socklen_t*) arm,lp64 278__recvmsg:recvmsg(int, struct msghdr*, unsigned int) arm,lp64 279__sendmsg:sendmsg(int, const struct msghdr*, unsigned int) arm,lp64 280__recvmmsg:recvmmsg(int, struct mmsghdr*, unsigned int, int, const struct timespec*) arm,lp64 281__sendmmsg:sendmmsg(int, struct mmsghdr*, unsigned int, int) arm,lp64 282 283# sockets for x86. These are done as an "indexed" call to socketcall syscall. 284__socket:socketcall:1(int, int, int) x86 285bind:socketcall:2(int, struct sockaddr*, int) x86 286__connect:socketcall:3(int, struct sockaddr*, socklen_t) x86 287listen:socketcall:4(int, int) x86 288getsockname:socketcall:6(int, struct sockaddr*, socklen_t*) x86 289getpeername:socketcall:7(int, struct sockaddr*, socklen_t*) x86 290__socketpair:socketcall:8(int, int, int, int*) x86 291__sendto:socketcall:11(int, const void*, size_t, int, const struct sockaddr*, socklen_t) x86 292recvfrom:socketcall:12(int, void*, size_t, unsigned int, struct sockaddr*, socklen_t*) x86 293shutdown:socketcall:13(int, int) x86 294setsockopt:socketcall:14(int, int, int, const void*, socklen_t) x86 295getsockopt:socketcall:15(int, int, int, void*, socklen_t*) x86 296__sendmsg:socketcall:16(int, const struct msghdr*, unsigned int) x86 297__recvmsg:socketcall:17(int, struct msghdr*, unsigned int) x86 298__accept4:socketcall:18(int, struct sockaddr*, socklen_t*, int) x86 299__recvmmsg:socketcall:19(int, struct mmsghdr*, unsigned int, int, const struct timespec*) x86 300__sendmmsg:socketcall:20(int, struct mmsghdr*, unsigned int, int) x86 301 302# scheduler & real-time 303sched_get_priority_max(int policy) all 304sched_get_priority_min(int policy) all 305__sched_getaffinity:sched_getaffinity(pid_t, size_t, cpu_set_t*) all 306sched_getattr(pid_t, sched_attr*, unsigned, unsigned) all 307sched_getparam(pid_t, sched_param*) all 308sched_getscheduler(pid_t) all 309sched_rr_get_interval(pid_t, timespec*) all 310sched_setaffinity(pid_t, size_t, const cpu_set_t*) all 311sched_setattr(pid_t, sched_attr*, unsigned) all 312sched_setparam(pid_t, const sched_param*) all 313sched_setscheduler(pid_t, int, const sched_param*) all 314sched_yield(void) all 315 316# other 317uname(struct utsname*) all 318umask(mode_t) all 319__reboot:reboot(int, int, int, void*) all 320init_module(void*, unsigned long, const char*) all 321delete_module(const char*, unsigned int) all 322klogctl:syslog(int, char*, int) all 323sysinfo(struct sysinfo*) all 324personality(unsigned long) all 325 326setns(int, int) all 327unshare(int) all 328 329__getcpu:getcpu(unsigned*, unsigned*, void*) all 330 331bpf(int, union bpf_attr *, unsigned int) all 332 333tee(int, int, size_t, unsigned int) all 334splice(int, off64_t*, int, off64_t*, size_t, unsigned int) all 335vmsplice(int, const struct iovec*, size_t, unsigned int) all 336 337__epoll_create1:epoll_create1(int) all 338epoll_ctl(int, int op, int, struct epoll_event*) all 339__epoll_pwait:epoll_pwait(int, struct epoll_event*, int, int, const sigset64_t*, size_t) all 340__epoll_pwait2:epoll_pwait2(int, struct epoll_event*, int, const timespec64*, const sigset64_t*, size_t) all 341 342__eventfd:eventfd2(unsigned int, int) all 343 344_exit|_Exit:exit_group(int) all 345__exit:exit(int) all 346 347inotify_init1(int) all 348inotify_add_watch(int, const char*, unsigned int) all 349inotify_rm_watch(int, unsigned int) all 350 351__pselect6:pselect6(int, fd_set*, fd_set*, fd_set*, timespec*, void*) all 352__ppoll:ppoll(pollfd*, unsigned int, timespec*, const sigset64_t*, size_t) all 353 354process_vm_readv(pid_t, const struct iovec*, unsigned long, const struct iovec*, unsigned long, unsigned long) all 355process_vm_writev(pid_t, const struct iovec*, unsigned long, const struct iovec*, unsigned long, unsigned long) all 356 357quotactl(int, const char*, int, char*) all 358 359__set_tid_address:set_tid_address(int*) all 360 361setdomainname(const char*, size_t) all 362sethostname(const char*, size_t) all 363 364sync_file_range(int, off64_t, off64_t, unsigned int) x86,lp64 365__sync_file_range2:sync_file_range2(int, unsigned int, off64_t, off64_t) arm 366 367wait4(pid_t, int*, int, struct rusage*) all 368__waitid:waitid(int, pid_t, siginfo_t*, int, void*) all 369 370# ARM-specific 371__set_tls:__ARM_NR_set_tls(void*) arm 372cacheflush:__ARM_NR_cacheflush(long start, long end, long flags) arm 373 374# riscv64-specific 375__riscv_flush_icache:riscv_flush_icache(void*, void*, unsigned long) riscv64 376 377# x86-specific 378__set_thread_area:set_thread_area(void*) x86 379arch_prctl(int, unsigned long) x86_64 380 381# vdso stuff. 382__clock_getres:clock_getres(clockid_t, struct timespec*) all 383__clock_gettime:clock_gettime(clockid_t, struct timespec*) all 384__gettimeofday:gettimeofday(struct timeval*, struct timezone*) all 385 386# <sys/random.h> 387getrandom(void*, size_t, unsigned) all 388 389# <sys/pidfd.h> 390__pidfd_open:pidfd_open(pid_t, unsigned int) all 391__pidfd_getfd:pidfd_getfd(int, int, unsigned int) all 392pidfd_send_signal(int, int, siginfo_t*, unsigned int) all 393