The list of system calls that are available as at kernel 4.19 System call Kernel ───────────────────────────────────────────────────────────────── _llseek(2) 1.2 _newselect(2) 2.0 _sysctl(2) 2.0 accept(2) 2.0 See notes on socketcall(2) accept4(2) 2.6.28 access(2) 1.0 acct(2) 1.0 add_key(2) 2.6.10 adjtimex(2) 1.0 alarm(2) 1.0 alloc_hugepages(2) 2.5.36 Removed in 2.5.44 arc_gettls(2) 3.9 ARC only arc_settls(2) 3.9 ARC only arc_usr_cmpxchg(2) 4.9 ARC only arch_prctl(2) 2.6 x86_64, x86 since 4.12 atomic_barrier(2) 2.6.34 m68k only atomic_cmpxchg_32(2) 2.6.34 m68k only bdflush(2) 1.2 Deprecated (does nothing) since 2.6 bfin_spinlock(2) 2.6.22 Blackfin only (port removed in Linux 4.17) bind(2) 2.0 See notes on socketcall(2) bpf(2) 3.18 brk(2) 1.0 breakpoint(2) 2.2 ARM OABI only, defined with __ARM_NR prefix cacheflush(2) 1.2 Not on x86 capget(2) 2.2 capset(2) 2.2 chdir(2) 1.0 chmod(2) 1.0 chown(2) 2.2 See chown(2) for version details chown32(2) 2.4 chroot(2) 1.0 clock_adjtime(2) 2.6.39 clock_getres(2) 2.6 clock_gettime(2) 2.6 clock_nanosleep(2) 2.6 clock_settime(2) 2.6 clone2(2) 2.4 IA-64 only clone(2) 1.0 clone3(2) 5.3 close(2) 1.0 cmpxchg_badaddr(2) 2.6.36 Tile only (port removed in Linux 4.17) connect(2) 2.0 See notes on socketcall(2) copy_file_range(2) 4.5 creat(2) 1.0 create_module(2) 1.0 Removed in 2.6 delete_module(2) 1.0 dma_memcpy(2) 2.6.22 Blackfin only (port removed in Linux 4.17) dup(2) 1.0 dup2(2) 1.0 dup3(2) 2.6.27 epoll_create(2) 2.6 epoll_create1(2) 2.6.27 epoll_ctl(2) 2.6 epoll_pwait(2) 2.6.19 epoll_wait(2) 2.6 eventfd(2) 2.6.22 eventfd2(2) 2.6.27 execv(2) 2.0 SPARC/SPARC64 only, for compatibility with SunOS execve(2) 1.0 execveat(2) 3.19 exit(2) 1.0 exit_group(2) 2.6 faccessat(2) 2.6.16 fadvise64(2) 2.6 fadvise64_64(2) 2.6 fallocate(2) 2.6.23 fanotify_init(2) 2.6.37 fanotify_mark(2) 2.6.37 fchdir(2) 1.0 fchmod(2) 1.0 fchmodat(2) 2.6.16 fchown(2) 1.0 fchown32(2) 2.4 fchownat(2) 2.6.16 fcntl(2) 1.0 fcntl64(2) 2.4 fdatasync(2) 2.0 fgetxattr(2) 2.6; 2.4.18 finit_module(2) 3.8 flistxattr(2) 2.6; 2.4.18 flock(2) 2.0 fork(2) 1.0 free_hugepages(2) 2.5.36 Removed in 2.5.44 fremovexattr(2) 2.6; 2.4.18 fsconfig(2) 5.2 fsetxattr(2) 2.6; 2.4.18 fsmount(2) 5.2 fsopen(2) 5.2 fspick(2) 5.2 fstat(2) 1.0 fstat64(2) 2.4 fstatat64(2) 2.6.16 fstatfs(2) 1.0 fstatfs64(2) 2.6 fsync(2) 1.0 ftruncate(2) 1.0 ftruncate64(2) 2.4 futex(2) 2.6 futimesat(2) 2.6.16 get_kernel_syms(2) 1.0 Removed in 2.6 get_mempolicy(2) 2.6.6 get_robust_list(2) 2.6.17 get_thread_area(2) 2.6 get_tls(2) 4.15 ARM OABI only, has __ARM_NR prefix getcpu(2) 2.6.19 getcwd(2) 2.2 getdents(2) 2.0 getdents64(2) 2.4 getdomainname(2) 2.2 SPARC, SPARC64; available as osf_getdomainname(2) on Alpha since Linux 2.0 getdtablesize(2) 2.0 SPARC (removed in 2.6.26), available on Alpha as osf_getdtablesize(2) getegid(2) 1.0 getegid32(2) 2.4 geteuid(2) 1.0 geteuid32(2) 2.4 getgid(2) 1.0 getgid32(2) 2.4 getgroups(2) 1.0 getgroups32(2) 2.4 gethostname(2) 2.0 Alpha, was available on SPARC up to Linux 2.6.26 getitimer(2) 1.0 getpeername(2) 2.0 See notes on socketcall(2) getpagesize(2) 2.0 Not on x86 getpgid(2) 1.0 getpgrp(2) 1.0 getpid(2) 1.0 getppid(2) 1.0 getpriority(2) 1.0 getrandom(2) 3.17 getresgid(2) 2.2 getresgid32(2) 2.4 getresuid(2) 2.2 getresuid32(2) 2.4 getrlimit(2) 1.0 getrusage(2) 1.0 getsid(2) 2.0 getsockname(2) 2.0 See notes on socketcall(2) getsockopt(2) 2.0 See notes on socketcall(2) gettid(2) 2.4.11 gettimeofday(2) 1.0 getuid(2) 1.0 getuid32(2) 2.4 getunwind(2) 2.4.8 IA-64 only; deprecated getxattr(2) 2.6; 2.4.18 getxgid(2) 2.0 Alpha only; see NOTES getxpid(2) 2.0 Alpha only; see NOTES getxuid(2) 2.0 Alpha only; see NOTES init_module(2) 1.0 inotify_add_watch(2) 2.6.13 inotify_init(2) 2.6.13 inotify_init1(2) 2.6.27 inotify_rm_watch(2) 2.6.13 io_cancel(2) 2.6 io_destroy(2) 2.6 io_getevents(2) 2.6 io_pgetevents(2) 4.18 io_setup(2) 2.6 io_submit(2) 2.6 io_uring_enter(2) 5.1 io_uring_register(2) 5.1 io_uring_setup(2) 5.1 ioctl(2) 1.0 ioperm(2) 1.0 iopl(2) 1.0 ioprio_get(2) 2.6.13 ioprio_set(2) 2.6.13 ipc(2) 1.0 kcmp(2) 3.5 kern_features(2) 3.7 SPARC64 only kexec_file_load(2) 3.17 kexec_load(2) 2.6.13 keyctl(2) 2.6.10 kill(2) 1.0 lchown(2) 1.0 See chown(2) for version details lchown32(2) 2.4 lgetxattr(2) 2.6; 2.4.18 link(2) 1.0 linkat(2) 2.6.16 listen(2) 2.0 See notes on socketcall(2) listxattr(2) 2.6; 2.4.18 llistxattr(2) 2.6; 2.4.18 lookup_dcookie(2) 2.6 lremovexattr(2) 2.6; 2.4.18 lseek(2) 1.0 lsetxattr(2) 2.6; 2.4.18 lstat(2) 1.0 lstat64(2) 2.4 madvise(2) 2.4 mbind(2) 2.6.6 memory_ordering(2) 2.2 SPARC64 only metag_get_tls(2) 3.9 Metag only (port removed in Linux 4.17) metag_set_fpu_flags(2) 3.9 Metag only (port removed in Linux 4.17) metag_set_tls(2) 3.9 Metag only (port removed in Linux 4.17) metag_setglobalbit(2) 3.9 Metag only (port removed in Linux 4.17) membarrier(2) 3.17 memfd_create(2) 3.17 migrate_pages(2) 2.6.16 mincore(2) 2.4 mkdir(2) 1.0 mkdirat(2) 2.6.16 mknod(2) 1.0 mknodat(2) 2.6.16 mlock(2) 2.0 mlock2(2) 4.4 mlockall(2) 2.0 mmap(2) 1.0 mmap2(2) 2.4 modify_ldt(2) 1.0 mount(2) 1.0 move_mount(2) 5.2 move_pages(2) 2.6.18 mprotect(2) 1.0 mq_getsetattr(2) 2.6.6 mq_notify(2) 2.6.6 mq_open(2) 2.6.6 mq_timedreceive(2) 2.6.6 mq_timedsend(2) 2.6.6 mq_unlink(2) 2.6.6 mremap(2) 2.0 msgctl(2) 2.0 See notes on ipc(2) msgget(2) 2.0 See notes on ipc(2) msgrcv(2) 2.0 See notes on ipc(2) msgsnd(2) 2.0 See notes on ipc(2) msync(2) 2.0 munlock(2) 2.0 munlockall(2) 2.0 munmap(2) 1.0 name_to_handle_at(2) 2.6.39 nanosleep(2) 2.0 newfstatat(2) 2.6.16 See stat(2) nfsservctl(2) 2.2 Removed in 3.1 nice(2) 1.0 old_adjtimex(2) 2.0 Alpha only; see NOTES old_getrlimit(2) 2.4 Old variant of getrlimit(2) that used a different value for RLIM_INFINITY oldfstat(2) 1.0 oldlstat(2) 1.0 oldolduname(2) 1.0 oldstat(2) 1.0 oldumount(2) 2.4.116 Name of the old umount(2) syscall on Alpha olduname(2) 1.0 open(2) 1.0 open_by_handle_at(2) 2.6.39 open_tree(2) 5.2 openat(2) 2.6.16 openat2(2) 5.6 or1k_atomic(2) 3.1 OpenRISC 1000 only pause(2) 1.0 pciconfig_iobase(2) 2.2.15; 2.4 Not on x86 pciconfig_read(2) 2.0.26; 2.2 Not on x86 pciconfig_write(2) 2.0.26; 2.2 Not on x86 perf_event_open(2) 2.6.31 Was perf_counter_open() in 2.6.31; renamed in 2.6.32 personality(2) 1.2 perfctr(2) 2.2 SPARC only; removed in 2.6.34 perfmonctl(2) 2.4 IA-64 only pidfd_getfd(2) 5.6 pidfd_send_signal(2) 5.1 pidfd_open(2) 5.3 pipe(2) 1.0 pipe2(2) 2.6.27 pivot_root(2) 2.4 pkey_alloc(2) 4.8 pkey_free(2) 4.8 pkey_mprotect(2) 4.8 poll(2) 2.0.36; 2.2 ppoll(2) 2.6.16 prctl(2) 2.2 pread(2) Used for pread64(2) on AVR32 (port removed in Linux 4.12) and Blackfin (port removed in Linux 4.17) pread64(2) Added as "pread" in 2.2; renamed "pread64" in 2.6 preadv(2) 2.6.30 preadv2(2) 4.6 prlimit64(2) 2.6.36 process_vm_readv(2) 3.2 process_vm_writev(2) 3.2 pselect6(2) 2.6.16 ptrace(2) 1.0 pwrite(2) Used for pwrite64(2) on AVR32 (port removed in Linux 4.12) and Blackfin (port removed in Linux 4.17) pwrite64(2) Added as "pwrite" in 2.2; renamed "pwrite64" in 2.6 pwritev(2) 2.6.30 pwritev2(2) 4.6 query_module(2) 2.2 Removed in 2.6 quotactl(2) 1.0 read(2) 1.0 readahead(2) 2.4.13 readdir(2) 1.0 readlink(2) 1.0 readlinkat(2) 2.6.16 readv(2) 2.0 reboot(2) 1.0 recv(2) 2.0 See notes on socketcall(2) recvfrom(2) 2.0 See notes on socketcall(2) recvmsg(2) 2.0 See notes on socketcall(2) recvmmsg(2) 2.6.33 remap_file_pages(2) 2.6 Deprecated since 3.16 removexattr(2) 2.6; 2.4.18 rename(2) 1.0 renameat(2) 2.6.16 renameat2(2) 3.15 request_key(2) 2.6.10 restart_syscall(2) 2.6 riscv_flush_icache(2) 4.15 RISC-V only rmdir(2) 1.0 rseq(2) 4.18 rt_sigaction(2) 2.2 rt_sigpending(2) 2.2 rt_sigprocmask(2) 2.2 rt_sigqueueinfo(2) 2.2 rt_sigreturn(2) 2.2 rt_sigsuspend(2) 2.2 rt_sigtimedwait(2) 2.2 rt_tgsigqueueinfo(2) 2.6.31 rtas(2) 2.6.2 PowerPC/PowerPC64 only s390_runtime_instr(2) 3.7 s390 only s390_pci_mmio_read(2) 3.19 s390 only s390_pci_mmio_write(2) 3.19 s390 only s390_sthyi(2) 4.15 s390 only s390_guarded_storage(2) 4.12 s390 only sched_get_affinity(2) 2.6 Name of sched_getaffinity(2) on SPARC and SPARC64 sched_get_priority_max(2) 2.0 sched_get_priority_min(2) 2.0 sched_getaffinity(2) 2.6 sched_getattr(2) 3.14 sched_getparam(2) 2.0 sched_getscheduler(2) 2.0 sched_rr_get_interval(2) 2.0 sched_set_affinity(2) 2.6 Name of sched_setaffinity(2) on SPARC and SPARC64 sched_setaffinity(2) 2.6 sched_setattr(2) 3.14 sched_setparam(2) 2.0 sched_setscheduler(2) 2.0 sched_yield(2) 2.0 seccomp(2) 3.17 select(2) 1.0 semctl(2) 2.0 See notes on ipc(2) semget(2) 2.0 See notes on ipc(2) semop(2) 2.0 See notes on ipc(2) semtimedop(2) 2.6; 2.4.22 send(2) 2.0 See notes on socketcall(2) sendfile(2) 2.2 sendfile64(2) 2.6; 2.4.19 sendmmsg(2) 3.0 sendmsg(2) 2.0 See notes on socketcall(2) sendto(2) 2.0 See notes on socketcall(2) set_mempolicy(2) 2.6.6 set_robust_list(2) 2.6.17 set_thread_area(2) 2.6 set_tid_address(2) 2.6 set_tls(2) 2.6.11 ARM OABI/EABI only (constant has __ARM_NR prefix) setdomainname(2) 1.0 setfsgid(2) 1.2 setfsgid32(2) 2.4 setfsuid(2) 1.2 setfsuid32(2) 2.4 setgid(2) 1.0 setgid32(2) 2.4 setgroups(2) 1.0 setgroups32(2) 2.4 sethae(2) 2.0 Alpha only; see NOTES sethostname(2) 1.0 setitimer(2) 1.0 setns(2) 3.0 setpgid(2) 1.0 setpgrp(2) 2.0 Alternative name for setpgid(2) on Alpha setpriority(2) 1.0 setregid(2) 1.0 setregid32(2) 2.4 setresgid(2) 2.2 setresgid32(2) 2.4 setresuid(2) 2.2 setresuid32(2) 2.4 setreuid(2) 1.0 setreuid32(2) 2.4 setrlimit(2) 1.0 setsid(2) 1.0 setsockopt(2) 2.0 See notes on socketcall(2) settimeofday(2) 1.0 setuid(2) 1.0 setuid32(2) 2.4 setup(2) 1.0 Removed in 2.2 setxattr(2) 2.6; 2.4.18 sgetmask(2) 1.0 shmat(2) 2.0 See notes on ipc(2) shmctl(2) 2.0 See notes on ipc(2) shmdt(2) 2.0 See notes on ipc(2) shmget(2) 2.0 See notes on ipc(2) shutdown(2) 2.0 See notes on socketcall(2) sigaction(2) 1.0 sigaltstack(2) 2.2 signal(2) 1.0 signalfd(2) 2.6.22 signalfd4(2) 2.6.27 sigpending(2) 1.0 sigprocmask(2) 1.0 sigreturn(2) 1.0 sigsuspend(2) 1.0 socket(2) 2.0 See notes on socketcall(2) socketcall(2) 1.0 socketpair(2) 2.0 See notes on socketcall(2) spill(2) 2.6.13 Xtensa only splice(2) 2.6.17 spu_create(2) 2.6.16 PowerPC/PowerPC64 only spu_run(2) 2.6.16 PowerPC/PowerPC64 only sram_alloc(2) 2.6.22 Blackfin (port removed in Linux 4.17) sram_free(2) 2.6.22 Blackfin (port removed in Linux 4.17) ssetmask(2) 1.0 stat(2) 1.0 stat64(2) 2.4 statfs(2) 1.0 statfs64(2) 2.6 statx(2) 4.11 stime(2) 1.0 subpage_prot(2) 2.6.25 PowerPC/PowerPC64 only swapcontext(2) 2.6.3 PowerPC/PowerPC64 only switch_endian(2) 4.1 PowerPC64 only swapcontext(2) 2.6.3 PowerPC only swapoff(2) 1.0 swapon(2) 1.0 symlink(2) 1.0 symlinkat(2) 2.6.16 sync(2) 1.0 sync_file_range(2) 2.6.17 sync_file_range2(2) 2.6.22 syncfs(2) 2.6.39 sys_debug_setcontext(2) 2.6.11 PowerPC only syscall(2) 1.0 Still available on ARM OABI and MIPS O32 ABI sysfs(2) 1.2 sysinfo(2) 1.0 syslog(2) 1.0 sysmips(2) 2.6.0 MIPS only tee(2) 2.6.17 tgkill(2) 2.6 time(2) 1.0 timer_create(2) 2.6 timer_delete(2) 2.6 timer_getoverrun(2) 2.6 timer_gettime(2) 2.6 timer_settime(2) 2.6 timerfd_create(2) 2.6.25 timerfd_gettime(2) 2.6.25 timerfd_settime(2) 2.6.25 times(2) 1.0 tkill(2) 2.6; 2.4.22 truncate(2) 1.0 truncate64(2) 2.4 ugetrlimit(2) 2.4 umask(2) 1.0 umount(2) 1.0 umount2(2) 2.2 uname(2) 1.0 unlink(2) 1.0 unlinkat(2) 2.6.16 unshare(2) 2.6.16 uselib(2) 1.0 ustat(2) 1.0 userfaultfd(2) 4.3 usr26(2) 2.4.8.1 ARM OABI only usr32(2) 2.4.8.1 ARM OABI only utime(2) 1.0 utimensat(2) 2.6.22 utimes(2) 2.2 utrap_install(2) 2.2 SPARC64 only vfork(2) 2.2 vhangup(2) 1.0 vm86old(2) 1.0 Was "vm86"; renamed in 2.0.28/2.2 vm86(2) 2.0.28; 2.2 vmsplice(2) 2.6.17 wait4(2) 1.0 waitid(2) 2.6.10 waitpid(2) 1.0 write(2) 1.0 writev(2) 2.0 xtensa(2) 2.6.13 Xtensa only
References: http://man7.org/linux/man-pages/man2/syscalls.2.html