6f3175d8a5
There were none: fcntl answered F_SETLK with EINVAL and flock was not a system call. Alpine's apk, which runs unmodified on SchOS through Alpine's own musl, locks its database before reading it and stopped there. kernel/fs/lock.c keeps one table of advisory locks keyed by (dev, inum): flock() for the whole file, owned by the open file description; F_SETLK/F_SETLKW/F_GETLK for byte ranges, owned by the process and released when it closes any descriptor on the file or exits; and the F_OFD_* forms, ranges owned by the description. flock and record locks do not see each other, as on Linux. Waiters sleep until any release and are interrupted by a signal. cmd/locktest checks each between a parent and a child, including range splitting, F_GETLK's report, and a blocked waiter being woken. shell.nix gains pkg-config, meson, ninja, m4, bison, flex and xz, for the X ports. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
309 lines
11 KiB
SQL
309 lines
11 KiB
SQL
// Segregated Kernel -- central syscall table. ONE line per syscall.
|
|
//
|
|
// Format: SYSCALL(nr, linux_nr, name)
|
|
// nr SchOS native syscall number
|
|
// linux_nr Linux x86_64 syscall number, or NO_LINUX if none
|
|
// name implemented as sys_<name>() in kernel/sys/sys_*.c
|
|
//
|
|
// To add a syscall:
|
|
// 1. Add ONE line here.
|
|
// 2. Write the body with SYSCALL_DEFINE(<name>) in a kernel/sys/sys_*.c.
|
|
//
|
|
// Everything else is generated from this file: the SYS_* constants
|
|
// (include/core/syscall.h), the dispatch table (kernel/sys/syscall.c), and the
|
|
// Linux ABI translation map (kernel/sys/linux_abi.c). The Linux number used
|
|
// to live in a second hand-maintained table in linux_abi.c; it does not any
|
|
// more, so a syscall can no longer be half-registered.
|
|
//
|
|
// A syscall reachable under more than one Linux number (e.g. stat/newstat)
|
|
// gets extra SYSCALL_ALIAS(linux_nr, name) lines.
|
|
|
|
|
|
// --- process ---
|
|
SYSCALL( 1, 57, fork)
|
|
SYSCALL( 2, 60, exit)
|
|
SYSCALL( 3, NO_LINUX, wait)
|
|
SYSCALL( 6, 62, kill)
|
|
SYSCALL( 7, 59, exec)
|
|
SYSCALL( 11, 39, getpid)
|
|
SYSCALL( 13, NO_LINUX, sleep)
|
|
SYSCALL( 14, NO_LINUX, uptime)
|
|
SYSCALL( 29, NO_LINUX, waitpid)
|
|
SYSCALL( 30, 112, setsid)
|
|
SYSCALL( 31, NO_LINUX, reboot)
|
|
SYSCALL( 32, NO_LINUX, shutdown)
|
|
SYSCALL( 66, 56, clone)
|
|
SYSCALL( 67, 231, exit_group)
|
|
SYSCALL( 68, 61, wait4)
|
|
SYSCALL( 83, 105, setuid)
|
|
SYSCALL( 84, 106, setgid)
|
|
SYSCALL( 85, 124, getsid)
|
|
SYSCALL( 89, 110, getppid)
|
|
SYSCALL( 91, 121, getpgid)
|
|
SYSCALL( 94, 186, gettid)
|
|
SYSCALL( 92, 109, setpgid)
|
|
SYSCALL( 93, 111, getpgrp)
|
|
|
|
// --- identity ---
|
|
SYSCALL( 47, 102, getuid)
|
|
SYSCALL( 48, 107, geteuid)
|
|
SYSCALL( 69, 104, getgid)
|
|
SYSCALL( 70, 108, getegid)
|
|
SYSCALL( 71, 95, umask)
|
|
|
|
// --- memory ---
|
|
SYSCALL( 12, NO_LINUX, sbrk)
|
|
SYSCALL( 35, 9, mmap)
|
|
SYSCALL( 36, 11, munmap)
|
|
// Shared memory. These carried NO_LINUX while they were ENOSYS stubs, which
|
|
// meant a musl-linked program calling shmget() never reached them at all --
|
|
// it got "bad syscall" from the ABI translation rather than an answer. Now
|
|
// that they do something, they need the numbers programs actually use.
|
|
SYSCALL( 37, 29, shmget)
|
|
SYSCALL( 38, 30, shmat)
|
|
SYSCALL( 39, 67, shmdt)
|
|
SYSCALL( 59, 10, mprotect)
|
|
SYSCALL( 74, 12, brk)
|
|
|
|
// --- filesystem ---
|
|
SYSCALL( 4, 22, pipe)
|
|
SYSCALL( 5, 0, read)
|
|
SYSCALL( 8, 5, fstat)
|
|
SYSCALL( 9, 80, chdir)
|
|
SYSCALL( 10, 32, dup)
|
|
SYSCALL( 15, 2, open)
|
|
SYSCALL( 16, 1, write)
|
|
SYSCALL( 17, 133, mknod)
|
|
SYSCALL( 18, 87, unlink)
|
|
SYSCALL( 19, 86, link)
|
|
SYSCALL( 20, 83, mkdir)
|
|
SYSCALL( 21, 3, close)
|
|
SYSCALL( 24, 8, lseek)
|
|
SYSCALL( 33, 33, dup2)
|
|
SYSCALL( 34, 72, fcntl)
|
|
// `delete` -- the recycle bin. It hides a file instead of removing it, so the
|
|
// blocks are never freed and a program that deletes a temp file gets no space
|
|
// back. Inherited from the third-party filesystem in kernel/fs/fs.c and
|
|
// orphaned by the decision to keep only Linux syscall numbering, so nothing
|
|
// reaches it. Its effect on read and write has been removed; the entry stays
|
|
// only because sys_delete() is still compiled, and both die with fs.c.
|
|
SYSCALL( 51, NO_LINUX, delete)
|
|
SYSCALL( 52, NO_LINUX, show)
|
|
SYSCALL( 53, NO_LINUX, showstat)
|
|
SYSCALL( 54, 77, ftruncate)
|
|
SYSCALL( 55, 76, truncate)
|
|
SYSCALL( 56, 82, rename)
|
|
SYSCALL( 57, 88, symlink)
|
|
SYSCALL( 58, 89, readlink)
|
|
SYSCALL( 61, 79, getcwd)
|
|
SYSCALL( 73, 19, readv)
|
|
SYSCALL( 72, 20, writev)
|
|
SYSCALL( 76, 4, stat)
|
|
SYSCALL( 77, 6, lstat)
|
|
SYSCALL( 78, 21, access)
|
|
SYSCALL( 79, 257, openat)
|
|
SYSCALL( 80, 81, fchdir)
|
|
SYSCALL( 86, 292, dup3)
|
|
SYSCALL( 87, 293, pipe2)
|
|
|
|
// --- device / I/O ---
|
|
SYSCALL( 22, NO_LINUX, vga_sync)
|
|
SYSCALL( 23, NO_LINUX, getmouse)
|
|
SYSCALL( 45, 23, select)
|
|
SYSCALL( 46, 7, poll)
|
|
SYSCALL( 60, 16, ioctl)
|
|
|
|
// --- sockets ---
|
|
//
|
|
// These carried NO_LINUX while they were ENOSYS stubs, which meant a
|
|
// musl-linked program calling socket() never reached them at all -- the ABI
|
|
// translation answered "bad syscall" before the stub could answer ENOSYS.
|
|
// Now that they do something they need the numbers programs actually use.
|
|
//
|
|
// `shutdown` is deliberately not the name here: SchOS already has a native
|
|
// shutdown() that powers the machine off (syscall 32), and two syscalls
|
|
// cannot share a sys_ function name. Linux 48 maps to sockshutdown instead.
|
|
SYSCALL( 40, 41, socket)
|
|
SYSCALL( 41, 49, bind)
|
|
SYSCALL( 42, 50, listen)
|
|
SYSCALL( 43, 43, accept)
|
|
SYSCALL( 44, 42, connect)
|
|
SYSCALL(187, 44, sendto)
|
|
SYSCALL(188, 45, recvfrom)
|
|
SYSCALL(189, 48, sockshutdown)
|
|
SYSCALL(190, 53, socketpair)
|
|
SYSCALL(191, 54, setsockopt)
|
|
SYSCALL(192, 55, getsockopt)
|
|
// accept4() differs from accept() only by a flags argument carrying
|
|
// SOCK_CLOEXEC/SOCK_NONBLOCK. It was an alias for accept, which silently
|
|
// dropped both -- and it cannot be an alias now that they are honoured: accept
|
|
// takes three arguments, so reading a fourth register from an accept() caller
|
|
// reads whatever it last left there and invents a flag out of stack litter.
|
|
SYSCALL(198, 288, accept4)
|
|
// sendmsg/recvmsg exist for the one thing only they can do: carry a descriptor
|
|
// from one process to another (SCM_RIGHTS). docs/plan/foundations.md item 1.
|
|
SYSCALL(199, 46, sendmsg)
|
|
SYSCALL(200, 47, recvmsg)
|
|
// memfd_create: an anonymous shared memory object reached by descriptor.
|
|
// docs/plan/foundations.md item 2 -- the thing a Wayland buffer crosses on,
|
|
// and the reason the descriptor passing above had to exist first.
|
|
SYSCALL(201, 319, memfd_create)
|
|
|
|
// --- time ---
|
|
SYSCALL( 28, 37, alarm)
|
|
SYSCALL( 49, 96, gettimeofday)
|
|
SYSCALL( 50, 35, nanosleep)
|
|
SYSCALL( 88, 228, clock_gettime)
|
|
|
|
// --- signals ---
|
|
SYSCALL( 25, NO_LINUX, sigfillset)
|
|
SYSCALL( 26, 14, sigprocmask)
|
|
SYSCALL( 27, NO_LINUX, sigwait)
|
|
SYSCALL( 90, 13, rt_sigaction)
|
|
|
|
// --- POSIX / Linux-ABI compat ---
|
|
SYSCALL( 62, 158, arch_prctl)
|
|
SYSCALL( 95, 63, uname)
|
|
SYSCALL( 96, 217, getdents64)
|
|
SYSCALL( 63, 218, set_tid_address)
|
|
SYSCALL( 64, 273, set_robust_list)
|
|
SYSCALL( 65, 202, futex)
|
|
SYSCALL( 75, 302, prlimit)
|
|
SYSCALL( 81, NO_LINUX, enable_linux_abi)
|
|
SYSCALL( 82, 97, getrlimit)
|
|
|
|
// --- signal extensions ---
|
|
SYSCALL( 97, 15, rt_sigreturn)
|
|
SYSCALL( 98, 131, sigaltstack)
|
|
SYSCALL( 99, 127, rt_sigpending)
|
|
SYSCALL(100, 128, rt_sigtimedwait)
|
|
SYSCALL(101, 130, rt_sigsuspend)
|
|
|
|
// --- process extensions ---
|
|
SYSCALL(102, 157, prctl)
|
|
SYSCALL(103, 234, tgkill)
|
|
SYSCALL(104, 200, tkill)
|
|
SYSCALL(105, 34, pause)
|
|
SYSCALL(106, NO_LINUX, getitimer)
|
|
SYSCALL(107, NO_LINUX, setitimer)
|
|
SYSCALL(108, 98, getrusage)
|
|
SYSCALL(109, 100, times)
|
|
SYSCALL(110, 99, sysinfo)
|
|
SYSCALL(111, 24, sched_yield)
|
|
SYSCALL(112, 204, sched_getaffinity)
|
|
SYSCALL(113, 203, sched_setaffinity)
|
|
SYSCALL(114, 247, waitid)
|
|
|
|
// --- identity extensions ---
|
|
SYSCALL(115, 113, setreuid)
|
|
SYSCALL(116, 114, setregid)
|
|
SYSCALL(117, 118, getresuid)
|
|
SYSCALL(118, 120, getresgid)
|
|
SYSCALL(119, 117, setresuid)
|
|
SYSCALL(120, 119, setresgid)
|
|
SYSCALL(121, 115, getgroups)
|
|
SYSCALL(122, 116, setgroups)
|
|
SYSCALL(123, 122, setfsuid)
|
|
SYSCALL(124, 123, setfsgid)
|
|
|
|
// --- filesystem extensions ---
|
|
SYSCALL(125, 90, chmod)
|
|
SYSCALL(126, 91, fchmod)
|
|
SYSCALL(127, 92, chown)
|
|
SYSCALL(128, 93, fchown)
|
|
SYSCALL(129, 94, lchown)
|
|
SYSCALL(130, 84, rmdir)
|
|
SYSCALL(131, NO_LINUX, fsync)
|
|
SYSCALL(132, NO_LINUX, fdatasync)
|
|
SYSCALL(133, 162, sync)
|
|
SYSCALL(134, 17, pread)
|
|
SYSCALL(135, 18, pwrite)
|
|
SYSCALL(148, 132, utime)
|
|
SYSCALL(149, 235, utimes)
|
|
SYSCALL(150, 261, utimensat)
|
|
SYSCALL(151, 187, sendfile)
|
|
SYSCALL(152, NO_LINUX, preadv2)
|
|
SYSCALL(153, NO_LINUX, pwritev2)
|
|
SYSCALL(154, 285, fallocate)
|
|
SYSCALL(155, 137, statfs)
|
|
SYSCALL(156, 138, fstatfs)
|
|
SYSCALL(157, 161, chroot)
|
|
|
|
// --- attributes, and the index over them (SchFS phase 5) ---
|
|
//
|
|
// Linux's numbers for the xattr calls, so a program that already knows how to
|
|
// set an extended attribute needs no changes. schfs_query has no Linux
|
|
// equivalent -- it is the one genuinely new call -- so it is native-only.
|
|
SYSCALL(193, 188, setxattr)
|
|
SYSCALL(194, 191, getxattr)
|
|
SYSCALL(195, 197, removexattr)
|
|
SYSCALL(196, NO_LINUX, schfs_index)
|
|
SYSCALL(197, NO_LINUX, schfs_query)
|
|
|
|
// --- memory extensions ---
|
|
SYSCALL(136, 28, madvise)
|
|
SYSCALL(137, NO_LINUX, mremap)
|
|
SYSCALL(138, NO_LINUX, msync)
|
|
SYSCALL(139, NO_LINUX, mincore)
|
|
SYSCALL(140, 149, mlock)
|
|
SYSCALL(141, 150, munlock)
|
|
SYSCALL(142, 151, mlockall)
|
|
SYSCALL(143, 152, munlockall)
|
|
SYSCALL(144, 221, fadvise64)
|
|
SYSCALL(145, 160, setrlimit)
|
|
SYSCALL(146, 140, getpriority)
|
|
SYSCALL(147, 141, setpriority)
|
|
|
|
// --- at-syscalls ---
|
|
SYSCALL(158, 258, mkdirat)
|
|
SYSCALL(159, 259, mknodat)
|
|
SYSCALL(160, 263, unlinkat)
|
|
SYSCALL(161, 264, renameat)
|
|
SYSCALL(162, 265, linkat)
|
|
SYSCALL(163, 266, symlinkat)
|
|
SYSCALL(164, 267, readlinkat)
|
|
SYSCALL(165, 268, fchmodat)
|
|
SYSCALL(166, 269, faccessat)
|
|
SYSCALL(167, 262, fstatat)
|
|
SYSCALL(168, 260, fchownat)
|
|
SYSCALL(169, 316, renameat2)
|
|
|
|
// --- time extensions ---
|
|
SYSCALL(170, 201, time)
|
|
SYSCALL(171, 229, clock_getres)
|
|
SYSCALL(172, 230, clock_nanosleep)
|
|
|
|
// --- misc ---
|
|
SYSCALL(173, 103, syslog)
|
|
SYSCALL(174, 318, getrandom)
|
|
SYSCALL(175, 270, pselect6)
|
|
SYSCALL(176, 271, ppoll)
|
|
|
|
// --- epoll / eventfd / signalfd / timerfd ---
|
|
// signalfd4 and eventfd2 are 289 and 290. 282 and 284 are the originals,
|
|
// which have no flags argument -- they were once aliased to the new ones,
|
|
// which then read their flags from whatever the caller left in a register.
|
|
SYSCALL(177, 291, epoll_create1)
|
|
SYSCALL(178, 233, epoll_ctl)
|
|
SYSCALL(179, 232, epoll_wait)
|
|
SYSCALL(180, 289, signalfd4)
|
|
SYSCALL(181, 290, eventfd2)
|
|
SYSCALL(182, 283, timerfd_create)
|
|
SYSCALL(183, 286, timerfd_settime)
|
|
SYSCALL(184, 287, timerfd_gettime)
|
|
SYSCALL(202, 213, epoll_create)
|
|
SYSCALL(203, 281, epoll_pwait)
|
|
SYSCALL(204, 282, signalfd)
|
|
SYSCALL(205, 284, eventfd)
|
|
SYSCALL(206, 73, flock)
|
|
|
|
// --- mounts ---
|
|
SYSCALL(185, 165, mount)
|
|
SYSCALL(186, 166, umount2)
|
|
|
|
|
|
// --- additional Linux numbers routed to an existing handler ---
|
|
SYSCALL_ALIAS( 58, fork)
|
|
SYSCALL_ALIAS( 280, utimensat)
|
|
SYSCALL_ALIAS( 295, readv)
|
|
SYSCALL_ALIAS( 296, writev)
|