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// SPDX-FileCopyrightText: edef <edef@unfathomable.blue>
// SPDX-FileCopyrightText: V <v@unfathomable.blue>
// SPDX-License-Identifier: OSL-3.0
use {
crate::{define_syscalls, syscall_bitflags, syscall_enums, Process},
std::{
ffi::CString,
fmt::{self, Debug, Write},
},
};
pub(crate) use arg::{ProcessSyscallArg, SyscallArg};
pub(crate) use fd::{DirFd, FileDesc};
mod arg;
mod fd;
pub mod macros;
type SigAction = ();
type SysInfo = ();
type Tms = ();
type Stat = ();
type RobustListHead = ();
type RLimit64 = ();
define_syscalls! {
enum SyscallEntry {
fn read(fd: FileDesc, buf: *mut u8, count: usize) -> i64 = 0;
fn write(fd: FileDesc, buf: *const u8, count: usize) -> i64 = 1;
fn close(fd: FileDesc) -> i64 = 3;
fn mmap(addr: u64, len: u64, prot: ProtFlags, flags: MapFlags, fd: Option<FileDesc>, off: u64) -> i64 = 9;
fn mprotect(addr: u64, len: usize, prot: ProtFlags) -> i64 = 10;
fn brk(brk: u64) -> i64 = 12;
fn rt_sigaction(sig: Signal, act: *const SigAction, oact: *mut SigAction, sigsetsize: SigSetSize) -> i64 = 13;
fn ioctl(fd: FileDesc, cmd: Ioctl, arg: u64) -> i64 = 16;
fn pread64(fd: FileDesc, buf: *mut u8, count: usize, pos: u64) -> i64 = 17;
fn access(filename: CString, mode: AccessMode) -> i64 = 21;
fn getcwd(buf: *mut u8, size: u64) -> i64 = 79;
fn readlink(path: CString, buf: *mut u8, bufsiz: i32) -> i64 = 89;
fn sysinfo(info: *mut SysInfo) -> i64 = 99;
fn times(tbuf: *mut Tms) -> i64 = 100;
fn arch_prctl(option: ArchOption, arg2: u64) -> i64 = 158;
fn set_tid_address(tidptr: *mut i32) -> i64 = 218;
fn exit_group(error_code: i32) -> i64 = 231;
fn openat(dfd: DirFd, filename: CString, flags: OpenFlags, mode: FileMode) -> i64 = 257;
fn newfstatat(dfd: DirFd, filename: CString, statbuf: *mut Stat, flags: AtFlags) -> i64 = 262;
fn set_robust_list(head: *mut RobustListHead, len: RobustListHeadSize) -> i64 = 273;
fn prlimit64(pid: Zero, resource: ResourceLimit, new_rlim: *const RLimit64, old_rlim: *mut RLimit64) -> i64 = 302;
fn getrandom(ubuf: *mut u8, len: usize, flags: GrndFlags) -> i64 = 318;
}
}
syscall_bitflags! {
struct OpenFlags: i32 {
const WRONLY = 1 << 0 => O_WRONLY;
const CREAT = 1 << 6 => O_CREAT;
const NOCTTY = 1 << 8 => O_NOCTTY;
const TRUNC = 1 << 9 => O_TRUNC;
const CLOEXEC = 1 << 19 => O_CLOEXEC;
}
struct GrndFlags: u32 {
const NONBLOCK = 1 << 0 => GRND_NONBLOCK;
const RANDOM = 1 << 1 => GRND_RANDOM;
}
struct MapFlags: i32 {
const PRIVATE = 1 << 1 => MAP_PRIVATE;
const FIXED = 1 << 4 => MAP_FIXED;
const ANONYMOUS = 1 << 5 => MAP_ANONYMOUS;
const DENYWRITE = 1 << 11 => MAP_DENYWRITE;
}
struct ProtFlags: i32 {
const READ = 1 << 0 => PROT_READ;
const WRITE = 1 << 1 => PROT_WRITE;
const EXEC = 1 << 2 => PROT_EXEC;
}
struct AtFlags: i32 {
const EMPTY_PATH = 1 << 12 => AT_EMPTY_PATH;
}
struct AccessMode: i32 {
const F = 0 => F_OK;
const X = 1 << 0 => X_OK;
const W = 1 << 1 => W_OK;
const R = 1 << 2 => R_OK;
}
struct FileMode: u32 {
const IRUSR = 0o400 => S_IRUSR;
const IWUSR = 0o200 => S_IWUSR;
const IXUSR = 0o100 => S_IXUSR;
const IRGRP = 0o040 => S_IRGRP;
const IWGRP = 0o020 => S_IWGRP;
const IXGRP = 0o010 => S_IXGRP;
const IROTH = 0o004 => S_IROTH;
const IWOTH = 0o002 => S_IWOTH;
const IXOTH = 0o001 => S_IXOTH;
}
}
syscall_enums! {
enum ResourceLimit: u32 {
STACK = 0x3 => RLIMIT_STACK,
RSS = 0x5 => RLIMIT_RSS,
AS = 0x9 => RLIMIT_AS,
}
enum ArchOption: i32 {
SET_FS = 0x1002,
}
enum Ioctl: u64 {
TCGETS = 0x5401 => TCGETS,
TIOCGWINSZ = 0x5413 => TIOCGWINSZ,
}
enum Signal: i32 {
ILL = 4 => SIGILL,
ABRT = 6 => SIGABRT,
BUS = 7 => SIGBUS,
FPE = 8 => SIGFPE,
SEGV = 11 => SIGSEGV,
}
}
#[derive(Copy, Clone)]
pub(crate) struct Zero;
impl Debug for Zero {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_char('0')
}
}
impl SyscallArg for Zero {
fn try_from_reg(reg: u64) -> Option<Self> {
if reg == 0 {
Some(Zero)
} else {
None
}
}
}
#[derive(Debug, Copy, Clone)]
pub(crate) struct SigSetSize;
impl SyscallArg for SigSetSize {
fn try_from_reg(reg: u64) -> Option<Self> {
if reg == 8 {
Some(SigSetSize)
} else {
None
}
}
}
#[derive(Debug, Copy, Clone)]
pub(crate) struct RobustListHeadSize;
impl SyscallArg for RobustListHeadSize {
fn try_from_reg(reg: u64) -> Option<Self> {
if reg == 24 {
Some(RobustListHeadSize)
} else {
None
}
}
}
|
