Peter Limkilde Svendsen
414 lines
21 KiB
Rust
414 lines
21 KiB
Rust
use core::num::NonZeroU64;
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use super::types::*;
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use crate::{
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c_str::CStr,
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error::{Errno, Result},
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header::{
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bits_timespec::timespec,
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signal::sigevent,
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sys_resource::{rlimit, rusage},
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sys_select::timeval,
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sys_stat::stat,
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sys_statvfs::statvfs,
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sys_time::timezone,
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sys_utsname::utsname,
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time::itimerspec,
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},
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ld_so::tcb::OsSpecific,
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out::Out,
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pthread,
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};
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pub use self::epoll::PalEpoll;
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mod epoll;
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pub use self::ptrace::PalPtrace;
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mod ptrace;
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pub use self::signal::PalSignal;
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mod signal;
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pub use self::socket::PalSocket;
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mod socket;
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/// Platform abstraction layer, a platform-agnostic abstraction over syscalls.
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pub trait Pal {
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/// Platform implementation of [`access()`](crate::header::unistd::access) from [`unistd.h`](crate::header::unistd).
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fn access(path: CStr, mode: c_int) -> Result<()>;
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/// Platform implementation of [`brk()`](crate::header::unistd::brk) from [`unistd.h`](crate::header::unistd).
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unsafe fn brk(addr: *mut c_void) -> Result<*mut c_void>;
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/// Platform implementation of [`chdir()`](crate::header::unistd::chdir) from [`unistd.h`](crate::header::unistd).
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fn chdir(path: CStr) -> Result<()>;
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/// Platform implementation of [`chmod()`](crate::header::sys_stat::chmod) from [`sys/stat.h`](crate::header::sys_stat).
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fn chmod(path: CStr, mode: mode_t) -> Result<()>;
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/// Platform implementation of [`chown()`](crate::header::unistd::chown) from [`unistd.h`](crate::header::unistd).
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fn chown(path: CStr, owner: uid_t, group: gid_t) -> Result<()>;
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/// Platform implementation of [`clock_getres()`](crate::header::time::clock_getres) from [`time.h`](crate::header::time).
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fn clock_getres(clk_id: clockid_t, tp: Option<Out<timespec>>) -> Result<()>;
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// TODO: maybe remove tp and change signature to -> Result<timespec>?
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/// Platform implementation of [`clock_gettime()`](crate::header::time::clock_gettime) from [`time.h`](crate::header::time).
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fn clock_gettime(clk_id: clockid_t, tp: Out<timespec>) -> Result<()>;
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/// Platform implementation of [`clock_settime()`](crate::header::time::clock_settime) from [`time.h`](crate::header::time).
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unsafe fn clock_settime(clk_id: clockid_t, tp: *const timespec) -> Result<()>;
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/// Platform implementation of [`close()`](crate::header::unistd::close) from [`unistd.h`](crate::header::unistd).
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fn close(fildes: c_int) -> Result<()>;
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/// Platform implementation of [`dup()`](crate::header::unistd::dup) from [`unistd.h`](crate::header::unistd).
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fn dup(fildes: c_int) -> Result<c_int>;
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/// Platform implementation of [`dup2()`](crate::header::unistd::dup2) from [`unistd.h`](crate::header::unistd).
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fn dup2(fildes: c_int, fildes2: c_int) -> Result<c_int>;
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/// Platform implementation of [`execve()`](crate::header::unistd::execve) from [`unistd.h`](crate::header::unistd).
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unsafe fn execve(path: CStr, argv: *const *mut c_char, envp: *const *mut c_char) -> Result<()>;
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/// Platform implementation of [`fexecve()`](crate::header::unistd::fexecve) from [`unistd.h`](crate::header::unistd).
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unsafe fn fexecve(
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fildes: c_int,
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argv: *const *mut c_char,
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envp: *const *mut c_char,
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) -> Result<()>;
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/// Platform implementation of [`_Exit()`](crate::header::stdlib::_Exit) from [`stdlib.h`](crate::header::stdlib) (or the equivalent [`_exit()`](crate::header::unistd::_exit) from [`unistd.h`](crate::header::unistd)).
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fn exit(status: c_int) -> !;
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unsafe fn exit_thread(stack_base: *mut (), stack_size: usize) -> !;
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/// Platform implementation of [`fchdir()`](crate::header::unistd::fchdir) from [`unistd.h`](crate::header::unistd).
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fn fchdir(fildes: c_int) -> Result<()>;
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/// Platform implementation of [`fchmod()`](crate::header::sys_stat::fchmod) from [`sys/stat.h`](crate::header::sys_stat).
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fn fchmod(fildes: c_int, mode: mode_t) -> Result<()>;
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/// Platform implementation of [`fchmodat()`](crate::header::sys_stat::fchmodat) from [`sys/stat.h`](crate::header::sys_stat).
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fn fchmodat(dirfd: c_int, path: Option<CStr>, mode: mode_t, flags: c_int) -> Result<()>;
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/// Platform implementation of [`fchown()`](crate::header::unistd::fchown) from [`unistd.h`](crate::header::unistd).
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fn fchown(fildes: c_int, owner: uid_t, group: gid_t) -> Result<()>;
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/// Platform implementation of [`fdatasync()`](crate::header::unistd::fdatasync) from [`unistd.h`](crate::header::unistd).
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fn fdatasync(fildes: c_int) -> Result<()>;
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/// Platform implementation of [`flock()`](crate::header::sys_file::flock) from [`sys/file.h`](crate::header::sys_file).
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fn flock(fd: c_int, operation: c_int) -> Result<()>;
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/// Platform implementation of [`fstat()`](crate::header::sys_stat::fstat) from [`sys/stat.h`](crate::header::sys_stat).
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fn fstat(fildes: c_int, buf: Out<stat>) -> Result<()>;
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/// Platform implementation of [`fstatat()`](crate::header::sys_stat::fstatat) from [`sys/stat.h`](crate::header::sys_stat).
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fn fstatat(fildes: c_int, path: Option<CStr>, buf: Out<stat>, flags: c_int) -> Result<()>;
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/// Platform implementation of [`fstatvfs()`](crate::header::sys_statvfs::fstatvfs) from [`sys/statvfs.h`](crate::header::sys_statvfs).
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fn fstatvfs(fildes: c_int, buf: Out<statvfs>) -> Result<()>;
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/// Platform implementation of [`fcntl()`](crate::header::fcntl::fcntl) from [`fcntl.h`](crate::header::fcntl).
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fn fcntl(fildes: c_int, cmd: c_int, arg: c_ulonglong) -> Result<c_int>;
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/// Platform implementation of [`_Fork()`](crate::header::unistd::_Fork) from [`unistd.h`](crate::header::unistd).
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unsafe fn fork() -> Result<pid_t>;
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fn fpath(fildes: c_int, out: &mut [u8]) -> Result<usize>;
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/// Platform implementation of [`fsync()`](crate::header::unistd::fsync) from [`unistd.h`](crate::header::unistd).
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fn fsync(fildes: c_int) -> Result<()>;
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/// Platform implementation of [`ftruncate()`](crate::header::unistd::ftruncate) from [`unistd.h`](crate::header::unistd).
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fn ftruncate(fildes: c_int, length: off_t) -> Result<()>;
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unsafe fn futex_wait(addr: *mut u32, val: u32, deadline: Option<×pec>) -> Result<()>;
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unsafe fn futex_wake(addr: *mut u32, num: u32) -> Result<u32>;
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/// Platform implementation of [`futimens()`](crate::header::sys_stat::futimens) from [`sys/stat.h`](crate::header::sys_stat).
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unsafe fn futimens(fd: c_int, times: *const timespec) -> Result<()>;
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/// Platform implementation of `utimens()` (TODO) from [`sys/stat.h`](crate::header::sys_stat).
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unsafe fn utimens(path: CStr, times: *const timespec) -> Result<()>;
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/// Platform implementation of [`getcwd()`](crate::header::unistd::getcwd) from [`unistd.h`](crate::header::unistd).
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fn getcwd(buf: Out<[u8]>) -> Result<()>;
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fn getdents(fd: c_int, buf: &mut [u8], opaque_offset: u64) -> Result<usize>;
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fn dir_seek(fd: c_int, opaque_offset: u64) -> Result<()>;
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// SAFETY: This_dent must satisfy platform-specific size and alignment constraints. On Linux,
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// this means the buffer came from a valid getdents64 invocation, whereas on Redox, every
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// possible this_dent slice is safe (and will be validated).
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unsafe fn dent_reclen_offset(this_dent: &[u8], offset: usize) -> Option<(u16, u64)>;
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// Always successful
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/// Platform implementation of [`getegid()`](crate::header::unistd::getegid) from [`unistd.h`](crate::header::unistd).
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fn getegid() -> gid_t;
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// Always successful
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/// Platform implementation of [`geteuid()`](crate::header::unistd::geteuid) from [`unistd.h`](crate::header::unistd).
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fn geteuid() -> uid_t;
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// Always successful
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/// Platform implementation of [`getgid()`](crate::header::unistd::getgid) from [`unistd.h`](crate::header::unistd).
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fn getgid() -> gid_t;
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/// Platform implementation of [`getgroups()`](crate::header::unistd::getgroups) from [`unistd.h`](crate::header::unistd).
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fn getgroups(list: Out<[gid_t]>) -> Result<c_int>;
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/* Note that this is distinct from the legacy POSIX function
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* getpagesize(), which returns a c_int. On some Linux platforms,
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* page size may be determined through a syscall ("getpagesize"). */
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fn getpagesize() -> usize;
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/// Platform implementation of [`getpgid()`](crate::header::unistd::getpgid) from [`unistd.h`](crate::header::unistd).
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fn getpgid(pid: pid_t) -> Result<pid_t>;
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// Always successful
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/// Platform implementation of [`getpid()`](crate::header::unistd::getpid) from [`unistd.h`](crate::header::unistd).
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fn getpid() -> pid_t;
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// Always successful
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/// Platform implementation of [`getppid()`](crate::header::unistd::getppid) from [`unistd.h`](crate::header::unistd).
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fn getppid() -> pid_t;
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/// Platform implementation of [`getpriority()`](crate::header::sys_resource::getpriority) from [`sys/resource.h`](crate::header::sys_resource).
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fn getpriority(which: c_int, who: id_t) -> Result<c_int>;
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/// Platform implementation of [`getrandom()`](crate::header::sys_random::getrandom) from [`sys/random.h`](crate::header::sys_random).
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fn getrandom(buf: &mut [u8], flags: c_uint) -> Result<usize>;
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/// Platform implementation of [`getresgid()`](crate::header::unistd::getresgid) from [`unistd.h`](crate::header::unistd).
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fn getresgid(
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rgid: Option<Out<gid_t>>,
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egid: Option<Out<gid_t>>,
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sgid: Option<Out<gid_t>>,
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) -> Result<()>;
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/// Platform implementation of [`getresuid()`](crate::header::unistd::getresuid) from [`unistd.h`](crate::header::unistd).
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fn getresuid(
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ruid: Option<Out<uid_t>>,
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euid: Option<Out<uid_t>>,
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suid: Option<Out<uid_t>>,
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) -> Result<()>;
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/// Platform implementation of [`getrlimit()`](crate::header::sys_resource::getrlimit) from [`sys/resource.h`](crate::header::sys_resource).
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fn getrlimit(resource: c_int, rlim: Out<rlimit>) -> Result<()>;
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/// Platform implementation of [`setrlimit()`](crate::header::sys_resource::setrlimit) from [`sys/resource.h`](crate::header::sys_resource).
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unsafe fn setrlimit(resource: c_int, rlim: *const rlimit) -> Result<()>;
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/// Platform implementation of [`getrusage()`](crate::header::sys_resource::getrusage) from [`sys/resource.h`](crate::header::sys_resource).
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fn getrusage(who: c_int, r_usage: Out<rusage>) -> Result<()>;
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/// Platform implementation of [`getsid()`](crate::header::unistd::getsid) from [`unistd.h`](crate::header::unistd).
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fn getsid(pid: pid_t) -> Result<pid_t>;
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// Always successful
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/// Platform implementation of `gettid()` (TODO) from [`unistd.h`](crate::header::unistd).
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fn gettid() -> pid_t;
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/// Platform implementation of [`gettimeofday()`](crate::header::sys_time::gettimeofday) from [`sys/time.h`](crate::header::sys_time).
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fn gettimeofday(tp: Out<timeval>, tzp: Option<Out<timezone>>) -> Result<()>;
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/// Platform implementation of [`getuid()`](crate::header::unistd::getuid) from [`unistd.h`](crate::header::unistd).
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fn getuid() -> uid_t;
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/// Platform implementation of [`lchown()`](crate::header::unistd::lchown) from [`unistd.h`](crate::header::unistd).
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fn lchown(path: CStr, owner: uid_t, group: gid_t) -> Result<()>;
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/// Platform implementation of [`link()`](crate::header::unistd::link) from [`unistd.h`](crate::header::unistd).
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fn link(path1: CStr, path2: CStr) -> Result<()>;
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/// Platform implementation of [`lseek()`](crate::header::unistd::lseek) from [`unistd.h`](crate::header::unistd).
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fn lseek(fildes: c_int, offset: off_t, whence: c_int) -> Result<off_t>;
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/// Platform implementation of [`mkdirat()`](crate::header::sys_stat::mkdirat) from [`sys/stat.h`](crate::header::sys_stat).
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fn mkdirat(fildes: c_int, path: CStr, mode: mode_t) -> Result<()>;
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/// Platform implementation of [`mkdir()`](crate::header::sys_stat::mkdir) from [`sys/stat.h`](crate::header::sys_stat).
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fn mkdir(path: CStr, mode: mode_t) -> Result<()>;
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/// Platform implementation of [`mkfifoat()`](crate::header::sys_stat::mkfifoat) from [`sys/stat.h`](crate::header::sys_stat).
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fn mkfifoat(dir_fd: c_int, path: CStr, mode: mode_t) -> Result<()>;
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/// Platform implementation of [`mkfifo()`](crate::header::sys_stat::mkfifo) from [`sys/stat.h`](crate::header::sys_stat).
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fn mkfifo(path: CStr, mode: mode_t) -> Result<()>;
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/// Platform implementation of [`mknodat()`](crate::header::sys_stat::mknodat) from [`sys/stat.h`](crate::header::sys_stat).
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fn mknodat(fildes: c_int, path: CStr, mode: mode_t, dev: dev_t) -> Result<()>;
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/// Platform implementation of [`mknod()`](crate::header::sys_stat::mknod) from [`sys/stat.h`](crate::header::sys_stat).
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fn mknod(path: CStr, mode: mode_t, dev: dev_t) -> Result<()>;
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/// Platform implementation of [`mlock()`](crate::header::sys_mman::mlock) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn mlock(addr: *const c_void, len: usize) -> Result<()>;
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/// Platform implementation of [`mlockall()`](crate::header::sys_mman::mlockall) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn mlockall(flags: c_int) -> Result<()>;
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/// Platform implementation of [`mmap()`](crate::header::sys_mman::mmap) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn mmap(
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addr: *mut c_void,
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len: usize,
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prot: c_int,
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flags: c_int,
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fildes: c_int,
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off: off_t,
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) -> Result<*mut c_void>;
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/// Platform implementation of [`mremap()`](crate::header::sys_mman::mremap) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn mremap(
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addr: *mut c_void,
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len: usize,
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new_len: usize,
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flags: c_int,
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args: *mut c_void,
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) -> Result<*mut c_void>;
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/// Platform implementation of [`mprotect()`](crate::header::sys_mman::mprotect) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn mprotect(addr: *mut c_void, len: usize, prot: c_int) -> Result<()>;
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/// Platform implementation of [`msync()`](crate::header::sys_mman::msync) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn msync(addr: *mut c_void, len: usize, flags: c_int) -> Result<()>;
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/// Platform implementation of [`munlock()`](crate::header::sys_mman::munlock) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn munlock(addr: *const c_void, len: usize) -> Result<()>;
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/// Platform implementation of [`madvise()`](crate::header::sys_mman::madvise) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn madvise(addr: *mut c_void, len: usize, flags: c_int) -> Result<()>;
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/// Platform implementation of [`munlockall()`](crate::header::sys_mman::munlockall) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn munlockall() -> Result<()>;
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/// Platform implementation of [`munmap()`](crate::header::sys_mman::munmap) from [`sys/mman.h`](crate::header::sys_mman).
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unsafe fn munmap(addr: *mut c_void, len: usize) -> Result<()>;
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/// Platform implementation of [`nanosleep()`](crate::header::time::nanosleep) from [`time.h`](crate::header::time).
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unsafe fn nanosleep(rqtp: *const timespec, rmtp: *mut timespec) -> Result<()>;
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/// Platform implementation of [`open()`](crate::header::fcntl::open) from [`fcntl.h`](crate::header::fcntl).
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fn open(path: CStr, oflag: c_int, mode: mode_t) -> Result<c_int>;
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/// Platform implementation of `openat()` (TODO) from [`fcntl.h`](crate::header::fcntl).
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fn openat(dirfd: c_int, path: CStr, oflag: c_int, mode: mode_t) -> Result<c_int>;
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/// Platform implementation of [`pipe2()`](crate::header::unistd::pipe2) from [`unistd.h`](crate::header::unistd).
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fn pipe2(fildes: Out<[c_int; 2]>, flags: c_int) -> Result<()>;
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/// Platform implementation of [`posix_fallocate()`](crate::header::fcntl::posix_fallocate) from [`fcntl.h`](crate::header::fcntl).
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fn posix_fallocate(fd: c_int, offset: u64, length: NonZeroU64) -> Result<()>;
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/// Platform implementation of [`posix_getdents()`](crate::header::dirent::posix_getdents) from [`dirent.h`](crate::header::dirent).
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fn posix_getdents(fildes: c_int, buf: &mut [u8]) -> Result<usize>;
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unsafe fn rlct_clone(
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stack: *mut usize,
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os_specific: &mut OsSpecific,
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) -> Result<pthread::OsTid, Errno>;
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unsafe fn rlct_kill(os_tid: pthread::OsTid, signal: usize) -> Result<()>;
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fn current_os_tid() -> pthread::OsTid;
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/// Platform implementation of [`read()`](crate::header::unistd::read) from [`unistd.h`](crate::header::unistd).
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fn read(fildes: c_int, buf: &mut [u8]) -> Result<usize>;
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/// Platform implementation of [`pread()`](crate::header::unistd::pread) from [`unistd.h`](crate::header::unistd).
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fn pread(fildes: c_int, buf: &mut [u8], offset: off_t) -> Result<usize>;
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/// Platform implementation of [`readlink()`](crate::header::unistd::readlink) from [`unistd.h`](crate::header::unistd).
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fn readlink(pathname: CStr, out: &mut [u8]) -> Result<usize>;
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/// Platform implementation of [`readlinkat()`](crate::header::unistd::readlinkat) from [`unistd.h`](crate::header::unistd).
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fn readlinkat(dirfd: c_int, pathname: CStr, out: &mut [u8]) -> Result<usize>;
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/// Platform implementation of [`rename()`](crate::header::stdio::rename) from [`stdio.h`](crate::header::stdio).
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fn rename(old: CStr, new: CStr) -> Result<()>;
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/// Platform implementation of [`renameat()`](crate::header::stdio::renameat) from [`stdio.h`](crate::header::stdio).
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fn renameat(old_dir: c_int, old_path: CStr, new_dir: c_int, new_path: CStr) -> Result<()>;
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/// Platform implementation of [`renameat2()`](crate::header::stdio::renameat2) from [`stdio.h`](crate::header::stdio).
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fn renameat2(
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old_dir: c_int,
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old_path: CStr,
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new_dir: c_int,
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new_path: CStr,
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flags: c_uint,
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) -> Result<()>;
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/// Platform implementation of [`rmdir()`](crate::header::unistd::rmdir) from [`unistd.h`](crate::header::unistd).
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fn rmdir(path: CStr) -> Result<()>;
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/// Platform implementation of [`sched_yield()`](crate::header::sched::sched_yield) from [`sched.h`](crate::header::sched).
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fn sched_yield() -> Result<()>;
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/// Platform implementation of [`setgroups()`](crate::header::grp::setgroups) from [`grp.h`](crate::header::grp).
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unsafe fn setgroups(size: size_t, list: *const gid_t) -> Result<()>;
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/// Platform implementation of [`setpgid()`](crate::header::unistd::setpgid) from [`unistd.h`](crate::header::unistd).
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fn setpgid(pid: pid_t, pgid: pid_t) -> Result<()>;
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/// Platform implementation of [`setpriority()`](crate::header::sys_resource::setpriority) from [`sys/resource.h`](crate::header::sys_resource).
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fn setpriority(which: c_int, who: id_t, prio: c_int) -> Result<()>;
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/// Platform implementation of [`setresgid()`](crate::header::unistd::setresgid) from [`unistd.h`](crate::header::unistd).
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fn setresgid(rgid: gid_t, egid: gid_t, sgid: gid_t) -> Result<()>;
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/// Platform implementation of [`setresuid()`](crate::header::unistd::setresuid) from [`unistd.h`](crate::header::unistd).
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fn setresuid(ruid: uid_t, euid: uid_t, suid: uid_t) -> Result<()>;
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/// Platform implementation of [`setsid()`](crate::header::unistd::setsid) from [`unistd.h`](crate::header::unistd).
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fn setsid() -> Result<c_int>;
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/// Platform implementation of [`symlink()`](crate::header::unistd::symlink) from [`unistd.h`](crate::header::unistd).
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fn symlink(path1: CStr, path2: CStr) -> Result<()>;
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/// Platform implementation of [`sync()`](crate::header::unistd::sync) from [`unistd.h`](crate::header::unistd).
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fn sync() -> Result<()>;
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/// Platform implementation of [`timer_create()`](crate::header::time::timer_create) from [`time.h`](crate::header::time).
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fn timer_create(clock_id: clockid_t, evp: &sigevent, timerid: Out<timer_t>) -> Result<()>;
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/// Platform implementation of [`timer_delete()`](crate::header::time::timer_delete) from [`time.h`](crate::header::time).
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fn timer_delete(timerid: timer_t) -> Result<()>;
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/// Platform implementation of [`timer_gettime()`](crate::header::time::timer_gettime) from [`time.h`](crate::header::time).
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fn timer_gettime(timerid: timer_t, value: Out<itimerspec>) -> Result<()>;
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/// Platform implementation of [`timer_settime()`](crate::header::time::timer_settime) from [`time.h`](crate::header::time).
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fn timer_settime(
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timerid: timer_t,
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flags: c_int,
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value: &itimerspec,
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ovalue: Option<Out<itimerspec>>,
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) -> Result<()>;
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// Always successful
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/// Platform implementation of [`umask()`](crate::header::sys_stat::umask) from [`sys/stat.h`](crate::header::sys_stat).
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fn umask(mask: mode_t) -> mode_t;
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/// Platform implementation of [`uname()`](crate::header::sys_utsname::uname) from [`sys/utsname.h`](crate::header::sys_utsname).
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fn uname(utsname: Out<utsname>) -> Result<()>;
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/// Platform implementation of [`unlink()`](crate::header::unistd::unlink) from [`unistd.h`](crate::header::unistd).
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fn unlink(path: CStr) -> Result<()>;
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/// Platform implementation of [`waitpid()`](crate::header::sys_wait::waitpid) from [`sys/wait.h`](crate::header::sys_wait).
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|
fn waitpid(pid: pid_t, stat_loc: Option<Out<c_int>>, options: c_int) -> Result<pid_t>;
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/// Platform implementation of [`write()`](crate::header::unistd::write) from [`unistd.h`](crate::header::unistd).
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fn write(fildes: c_int, buf: &[u8]) -> Result<usize>;
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/// Platform implementation of [`pwrite()`](crate::header::unistd::pwrite) from [`unistd.h`](crate::header::unistd).
|
|
fn pwrite(fildes: c_int, buf: &[u8], offset: off_t) -> Result<usize>;
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fn verify() -> bool;
|
|
}
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