syscalls(2)                   System Calls Manual                  syscalls(2)

<?><?><?>
       syscalls - <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> Linux

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       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> Linux.

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       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?> -- <?><?><?>
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       <?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?> glibc
       (<?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>).
       <?><?><?><?><?><?><?><?><?> <?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>,
       <?><?><?><?><?><?><?><?> intro(2). <?><?><?><?><?>, <?><?> <?><?>
       <?><?><?><?><?><?>, <?><?><?> <?><?><?><?><?><?><?><?><?><?>
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       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>,
       <?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?>.
       <?><?><?><?><?><?><?><?>, <?> glibc <?><?><?><?> <?><?><?><?><?><?><?>
       chdir(), <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?> <<chdir>>.

       <?><?><?><?><?>, <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       glibc <?><?><?><?><?> <?><?><?><?><?><?><?><?><?>, <?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?>, <?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> errno
       <?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?>. (<?><?><?> <?><?> <?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?><?> syscall(2), <?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?>, <?><?><?> <?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>.)
       <?><?><?><?><?><?><?><?><?>: <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>, <?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
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       <?><?><?><?><?><?><?> (<?><?><?><?> <?>
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>/<?><?><?><?><?>
       <?><?><?><?><?><?>, <?><?><?><?><?><?><?><?> syscall(2));
       <?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?><?>,
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?>
       <?><?><?><?> <?> <?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> (<?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?>), <?><?><?><?><?><?><?><?>
       <?><?><?> <?> errno <?> <?><?><?><?><?><?><?><?><?><?> -1
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?>.

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       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>) <?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> --
       truncate(2) <?> truncate64(2); <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> glibc truncate() <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?> <?> <?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?>.

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       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       Linux. <?> <?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?>, <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?> Linux 2.2, <?> <?> <?><?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?>. <?><?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>:

       o  Where no kernel version is indicated, the system call appeared in
          Linux 1.0 or earlier.

       o  Where a system call is marked "1.2" this means the system call
          probably appeared in a Linux 1.1.x kernel version, and first
          appeared in a stable kernel with 1.2.  (Development of the Linux 1.2
          kernel was initiated from a branch of Linux 1.0.6 via the Linux
          1.1.x unstable kernel series.)

       o  Where a system call is marked "2.0" this means the system call
          probably appeared in a Linux 1.3.x kernel version, and first
          appeared in a stable kernel with Linux 2.0.  (Development of the
          Linux 2.0 kernel was initiated from a branch of Linux 1.2.x,
          somewhere around Linux 1.2.10, via the Linux 1.3.x unstable kernel
          series.)

       o  Where a system call is marked "2.2" this means the system call
          probably appeared in a Linux 2.1.x kernel version, and first
          appeared in a stable kernel with Linux 2.2.0.  (Development of the
          Linux 2.2 kernel was initiated from a branch of Linux 2.0.21 via the
          Linux 2.1.x unstable kernel series.)

       o  Where a system call is marked "2.4" this means the system call
          probably appeared in a Linux 2.3.x kernel version, and first
          appeared in a stable kernel with Linux 2.4.0.  (Development of the
          Linux 2.4 kernel was initiated from a branch of Linux 2.2.8 via the
          Linux 2.3.x unstable kernel series.)

       o  Where a system call is marked "2.6" this means the system call
          probably appeared in a Linux 2.5.x kernel version, and first
          appeared in a stable kernel with Linux 2.6.0.  (Development of Linux
          2.6 was initiated from a branch of Linux 2.4.15 via the Linux 2.5.x
          unstable kernel series.)

       o  Starting with Linux 2.6.0, the development model changed, and new
          system calls may appear in each Linux 2.6.x release.  In this case,
          the exact version number where the system call appeared is shown.
          This convention continues with the Linux 3.x kernel series, which
          followed on from Linux 2.6.39; and the Linux 4.x kernel series,
          which followed on from Linux 3.19; and the Linux 5.x kernel series,
          which followed on from Linux 4.20; and the Linux 6.x kernel series,
          which followed on from Linux 5.19.

       o  In some cases, a system call was added to a stable kernel series
          after it branched from the previous stable kernel series, and then
          backported into the earlier stable kernel series.  For example some
          system calls that appeared in Linux 2.6.x were also backported into
          a Linux 2.4.x release after Linux 2.4.15.  When this is so, the
          version where the system call appeared in both of the major kernel
          series is listed.

       The list of system calls that are available as at Linux 5.14 (or in a
       few cases only on older kernels) is as follows:

       System call                 <?><?><?><?>   <?><?><?><?><?><?><?><?><?><?>
       ----------------------------------------------------------------------------------
       _llseek(2)                  1.2
       _newselect(2)               2.0
       _sysctl(2)                  2.0            <?><?><?><?><?><?> <?><?> Linux 5.5
       accept(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  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         <?><?><?><?><?><?> <?><?> Linux 2.5.44
       arc_gettls(2)               3.9            <?><?><?><?><?><?> <?><?> ARC
       arc_settls(2)               3.9            <?><?><?><?><?><?> <?><?> ARC
       arc_usr_cmpxchg(2)          4.9            <?><?><?><?><?><?> <?><?> ARC
       arch_prctl(2)               2.6            x86_64, x86 <?><?><?><?><?><?><?> <?>
                                                  4.12
       atomic_barrier(2)           2.6.34         <?><?><?><?><?><?> <?><?> m68k
       atomic_cmpxchg_32(2)        2.6.34         <?><?><?><?><?><?> <?><?> m68k
       bdflush(2)                  1.2            Deprecated (does nothing) since 2.6
       bind(2)                     2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       bpf(2)                      3.18
       brk(2)                      1.0
       breakpoint(2)               2.2            <?><?><?><?><?><?> <?> ARM OABI,
                                                  <?><?><?><?><?><?><?><?><?> <?>
                                                  <?><?><?><?><?><?><?><?><?> __ARM_NR
       cacheflush(2)               1.2            <?><?> <?><?><?> 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
       clone(2)                    1.0
       clone3(2)                   5.3
       close(2)                    1.0
       close_range(2)              5.9
       connect(2)                  2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       copy_file_range(2)          4.5
       creat(2)                    1.0
       create_module(2)            1.0            <?><?><?><?><?><?> <?><?> Linux 2.6
       delete_module(2)            1.0
       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_pwait2(2)             5.11
       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
       faccessat2(2)               5.8
       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         <?><?><?><?><?><?> <?><?> Linux 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            <?><?><?><?><?><?> <?><?> Linux 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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       getpagesize(2)              2.0            <?><?> <?><?><?> 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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       getsockopt(2)               2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  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;
                                                  <?><?><?><?><?><?><?>
       getxattr(2)                 2.6; 2.4.18
       getxgid(2)                  2.0            <?><?><?><?><?><?> <?><?> Alpha;
                                                  <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?>
       getxpid(2)                  2.0            <?><?><?><?><?><?> <?><?> Alpha;
                                                  <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?>
       getxuid(2)                  2.0            <?><?><?><?><?><?> <?><?> Alpha;
                                                  <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?>
       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
       kexec_file_load(2)          3.17
       kexec_load(2)               2.6.13
       keyctl(2)                   2.6.10
       kill(2)                     1.0
       landlock_add_rule(2)        5.13
       landlock_create_ruleset(2)  5.13
       landlock_restrict_self(2)   5.13
       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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  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
       membarrier(2)               3.17
       memfd_create(2)             3.17
       memfd_secret(2)             5.14
       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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       msgget(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       msgrcv(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       msgsnd(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  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         <?><?><?><?><?><?><?><?> stat(2)
       nfsservctl(2)               2.2            <?><?><?><?><?><?> <?><?> Linux 3.1
       nice(2)                     1.0
       old_adjtimex(2)             2.0            <?><?><?><?><?><?> <?><?> Alpha;
                                                  <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?>
       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
       pause(2)                    1.0
       pciconfig_iobase(2)         2.2.15; 2.4    <?><?> <?><?><?> x86
       pciconfig_read(2)           2.0.26; 2.2    <?><?> <?><?><?> x86
       pciconfig_write(2)          2.0.26; 2.2    <?><?> <?><?><?> 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;
                                                  <?><?><?><?><?><?> <?> 2.6.34
       perfmonctl(2)               2.4            IA-64 only; removed in 5.10
       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
       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_madvise(2)          5.10
       process_vm_readv(2)         3.2
       process_vm_writev(2)        3.2
       pselect6(2)                 2.6.16
       ptrace(2)                   1.0
       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            <?><?><?><?><?><?> <?><?> Linux 2.6
       quotactl(2)                 1.0
       quotactl_fd(2)              5.14
       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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       recvfrom(2)                 2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       recvmsg(2)                  2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       recvmmsg(2)                 2.6.33
       remap_file_pages(2)         2.6            <?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?> <?> 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
       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
       s390_runtime_instr(2)       3.7            <?><?><?><?><?><?> <?><?><?> s390
       s390_pci_mmio_read(2)       3.19           <?><?><?><?><?><?> <?><?><?> s390
       s390_pci_mmio_write(2)      3.19           <?><?><?><?><?><?> <?><?><?> s390
       s390_sthyi(2)               4.15           <?><?><?><?><?><?> <?><?><?> s390
       s390_guarded_storage(2)     4.12           <?><?><?><?><?><?> <?><?><?> s390
       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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       semget(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       semop(2)                    2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       semtimedop(2)               2.6; 2.4.22
       send(2)                     2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       sendfile(2)                 2.2
       sendfile64(2)               2.6; 2.4.19
       sendmmsg(2)                 3.0
       sendmsg(2)                  2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       sendto(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  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;
                                                  <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?>
       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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       settimeofday(2)             1.0
       setuid(2)                   1.0
       setuid32(2)                 2.4
       setup(2)                    1.0            <?><?><?><?><?><?> <?> 2.2
       setxattr(2)                 2.6; 2.4.18
       sgetmask(2)                 1.0
       shmat(2)                    2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       shmctl(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       shmdt(2)                    2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       shmget(2)                   2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  ipc(2)
       shutdown(2)                 2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  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            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       socketcall(2)               1.0
       socketpair(2)               2.0            <?><?><?><?><?><?><?><?>
                                                  <?><?><?><?><?><?><?><?><?> <?><?>
                                                  socketcall(2)
       spill(2)                    2.6.13         <?><?><?><?><?><?> <?><?> Xtensa
       splice(2)                   2.6.17
       spu_create(2)               2.6.16         <?><?><?><?><?><?> <?><?>
                                                  PowerPC/PowerPC64
       spu_run(2)                  2.6.16         <?><?><?><?><?><?> <?><?>
                                                  PowerPC/PowerPC64
       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
       swapcontext(2)              2.6.3          <?><?><?><?><?><?> <?><?>
                                                  PowerPC/PowerPC64
       switch_endian(2)            4.1            <?><?><?><?><?><?> <?><?><?> PowerPC64
       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
       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
       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
       usr32(2)                    2.4.8.1        <?><?><?><?><?><?> <?> ARM OABI
       utime(2)                    1.0
       utimensat(2)                2.6.22
       utimes(2)                   2.2
       utrap_install(2)            2.2            <?><?><?><?><?><?> <?><?> SPARC64
       vfork(2)                    2.2
       vhangup(2)                  1.0
       vm86old(2)                  1.0            <?><?><?><?><?> <<vm86>>;
                                                  <?><?><?><?><?><?><?><?><?><?><?><?>
                                                  <?> 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

       <?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?>,
       <?><?><?><?><?><?><?> x86-32, <?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> (<?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> glibc) <?><?><?><?><?> socketcall(2), <?>
       <?><?><?><?><?><?><?><?> IPC <?><?><?><?><?><?> System V
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
       ipc(2).

       Although slots are reserved for them in the system call table, the
       following system calls are not implemented in the standard kernel:
       afs_syscall(2), break(2), ftime(2), getpmsg(2), gtty(2), idle(2),
       lock(2), madvise1(2), mpx(2), phys(2), prof(2), profil(2), putpmsg(2),
       security(2), stty(2), tuxcall(2), ulimit(2), and vserver(2)  (see also
       unimplemented(2)).  However, ftime(3), profil(3), and ulimit(3)  exist
       as library routines.  The slot for phys(2)  is in use since Linux
       2.1.116 for umount(2); phys(2)  will never be implemented.  The
       getpmsg(2)  and putpmsg(2)  calls are for kernels patched to support
       STREAMS, and may never be in the standard kernel.

       There was briefly set_zone_reclaim(2), added in Linux 2.6.13, and
       removed in Linux 2.6.16; this system call was never available to user
       space.

   System calls on removed ports
       Some system calls only ever existed on Linux architectures that have
       since been removed from the kernel:

       AVR32 (port removed in Linux 4.12)
              o  pread(2)
              o  pwrite(2)

       Blackfin (port removed in Linux 4.17)
              o  bfin_spinlock(2)  (added in Linux 2.6.22)
              o  dma_memcpy(2)  (added in Linux 2.6.22)
              o  pread(2)  (added in Linux 2.6.22)
              o  pwrite(2)  (added in Linux 2.6.22)
              o  sram_alloc(2)  (added in Linux 2.6.22)
              o  sram_free(2)  (added in Linux 2.6.22)

       Metag (port removed in Linux 4.17)
              o  metag_get_tls(2)  (add in Linux 3.9)
              o  metag_set_fpu_flags(2)  (add in Linux 3.9)
              o  metag_set_tls(2)  (add in Linux 3.9)
              o  metag_setglobalbit(2)  (add in Linux 3.9)

       Tile (port removed in Linux 4.17)
              o  cmpxchg_badaddr(2)  (added in Linux 2.6.36)

<?><?><?><?><?><?><?><?><?>
       <?><?><?><?> <?><?><?><?><?>, <?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?> <?><?><?><?><?><?><?> __NR_xxx,
       <?><?><?><?><?><?><?><?><?><?><?><?><?> <?> /usr/include/asm/unistdh,
       <?><?><?><?><?> <?><?><?><?><?> <?> <?><?><?><?><?><?><?><?>
       <?><?><?><?> <?><?><?><?> Linux <?> <?><?><?><?><?><?><?> sys_xxx().
       <?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?>
       <?><?><?><?><?> <?><?><?><?><?><?><?>, <?> <?><?><?><?><?><?><?><?>
       <?><?>-<?><?> <?><?><?><?>, <?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?>, <?><?><?> <?><?><?>
       <?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?>. <?><?>
       <?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?>,
       <?><?><?><?><?> <?><?><?> sparc, sparc64 <?> alpha,
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?>; <?><?><?> mips64 <?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?> 32-<?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>.

       <?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>. <?><?><?><?><?>
       <?><?> <?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>. <?><?>-<?><?>
       <?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?> (<?>
       <?><?><?><?><?><?> <?><?> <?><?><?><?><?><?> 32-<?><?><?><?><?><?>
       i386) <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> (<?><?><?><?><?><?><?><?>, truncate(2) <?>
       truncate64(2)), <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>, <?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?>. (<?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?>, <?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?> <?><?> <?><?><?><?><?><?>: <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> glibc <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>, <?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?> ABI <?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.)
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?>, <?> <?><?><?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>:

       o  <?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?>
          <?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> stat(2):
          sys_stat() (<?><?><?><?><?> __NR_oldstat), sys_newstat()
          (<?><?><?><?><?> __NR_stat) <?> sys_stat64() (<?><?><?><?><?>
          __NR_stat64), <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?><?> <?> <?> <?><?><?><?><?><?>
          <?><?><?><?><?><?>. <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
          <?> lstat(2) <?> fstat(2).

       o  <?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?> __NR_oldolduname, __NR_olduname <?>
          __NR_uname <?><?><?> <?><?><?><?><?><?><?> sys_olduname(),
          sys_uname() <?> sys_newuname().

       o  <?> Linux 2.0 <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
          <?><?><?><?><?><?> vm86(2), <?><?><?><?><?> <?> <?><?><?><?><?><?>
          <?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?> sys_vm86old() <?> sys_vm86().

       o  <?> Linux 2.4 <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
          <?><?><?><?><?><?> getrlimit(2) <?><?><?><?><?> <?>
          <?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
          sys_old_getrlimit() (<?><?><?><?><?> __NR_getrlimit) <?>
          sys_getrlimit() (<?><?><?><?><?> __NR_ugetrlimit).

       o  <?> Linux 2.4 <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
          <?><?><?><?> ID <?><?><?><?><?><?><?><?><?><?><?><?><?> <?>
          <?><?><?><?><?> <?> 16 <?><?> 32 <?><?><?>. <?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?> (<?><?><?><?><?><?><?><?>, chown32(2),
          getuid32(2), getgroups32(2), setresuid32(2)),
          <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
          <?><?><?><?><?><?> <?> <?><?><?><?> <?><?> <?><?><?><?><?><?><?>,
          <?><?> <?><?><?> <?><?><?><?><?><?><?><?> "32".

       o  <?> Linux 2.4 <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?>
          <?><?><?><?><?><?><?> <?><?><?><?><?><?> (<?> <?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?> <?><?>
          <?><?><?><?><?><?><?><?><?> <?> 32 <?><?><?><?>) <?>
          <?><?><?><?><?><?><?><?><?><?><?> <?><?> 32-<?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?><?>. <?><?><?> <?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?><?> <?>
          <?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?><?>
          <?><?> <?><?><?><?><?><?>. <?><?><?><?> <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?>: fcntl64(2), getdents64(2), stat64(2),
          statfs64(2), truncate64(2) <?> <?><?> <?><?><?><?><?><?><?>,
          <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
          <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>. <?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>,
          <?><?><?><?><?><?><?>, <?><?> <?><?><?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?> <<stat>>, <?><?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?>, <?><?> <?><?> <?><?><?><?><?>
          <?><?><?><?><?><?><?><?> <<64>>.

          <?><?> <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>,
          <?><?><?><?><?><?><?> <?><?><?><?><?><?> 64-<?><?><?><?><?><?>
          <?><?><?><?><?><?> <?> <?><?><?><?><?><?> <?> 32-<?><?><?><?><?><?>
          UID/GID (<?><?><?><?><?><?><?><?>, alpha, ia64, s390x, x86-64),
          <?><?><?><?> <?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?> UID/GID
          <?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>. <?><?>
          <?><?><?><?><?><?><?><?><?><?> (<?><?><?><?><?><?> <?><?><?>
          32-<?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>) <?><?><?>
          <?><?><?><?><?><?><?> *64 <?> *32 <?><?><?><?><?><?>,
          <?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?>.

       o  The rt_sig* calls were added in Linux 2.2 to support the addition of
          real-time signals (see signal(7)).  These system calls supersede the
          older system calls of the same name without the "rt_" prefix.

       o  <?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> select(2) <?>
          mmap(2) <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?>
          <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>, <?><?><?>
          <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?>
          i386(). <?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>,
          <?><?><?><?><?> <?><?><?> <?><?> <?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> sys_select()
          <?> sys_mmap() <?><?><?><?><?><?><?><?><?><?><?><?><?> __NR_select
          <?> __NR_mmap, <?><?> i386 <?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?><?><?> old_select() <?> old_mmap()
          (<?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?> <?><?> <?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?>). <?> <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?> <?><?><?><?><?><?> <?><?><?>
          <?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
          <?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?>
          <?><?><?><?> __NR__newselect, <?><?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
          sys_select() <?> <?><?><?><?> <?><?><?><?><?> <?> __NR_mmap2. <?><?>
          s390x <?><?><?><?><?><?> 64-<?><?><?><?><?><?>
          <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?> old_mmap.

   <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?>: Alpha
       getxgid(2)
              returns a pair of GID and effective GID via registers r0 and
              r20; it is provided instead of getgid(2) and getegid(2).

       getxpid(2)
              returns a pair of PID and parent PID via registers r0 and r20;
              it is provided instead of getpid(2) and getppid(2).

       old_adjtimex(2)
              is a variant of adjtimex(2) that uses struct timeval32, for
              compatibility with OSF/1.

       getxuid(2)
              returns a pair of GID and effective GID via registers r0 and
              r20; it is provided instead of getuid(2) and geteuid(2).

       sethae(2)
              is used for configuring the Host Address Extension register on
              low-cost Alphas in order to access address space beyond first 27
              bits.

<?><?>. <?><?><?><?><?>
       ausyscall(1), intro(2), syscall(2), unimplemented(2), errno(3),
       libc(7), vdso(7)

<?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?> Alexander Golubev <fatzer2@gmail.com>, Azamat
       Hackimov <azamat.hackimov@gmail.com>, Hotellook, Nikita
       <zxcvbnm3230@mail.ru>, Spiros Georgaras <sng@hellug.gr>, Vladislav
       <ivladislavefimov@gmail.com>, Yuri Kozlov <yuray@komyakino.ru> <?>
       <?><?><?><?> <?><?><?><?><?><?> <pavia00@gmail.com>

       <?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?>;
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> GNU
       <?><?><?><?><?><?> 3 <https://www.gnu.org/licenses/gpl-3.0.html>
       <?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?>, <?><?><?><?><?>
       <?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>. <?><?> <?><?>
       <?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

       <?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
       <?> <?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?><?>,
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?> <man-pages-ru-talks@lists.sourceforge.net>.

Linux man-pages 6.06    16 <?><?><?><?><?><?> 2024 <?>.            syscalls(2)