rustix/backend/linux_raw/
mod.rs

1//! The linux_raw backend.
2//!
3//! This makes Linux syscalls directly, without going through libc.
4//!
5//! # Safety
6//!
7//! These files performs raw system calls, and sometimes passes them
8//! uninitialized memory buffers. The signatures in this module are currently
9//! manually maintained and must correspond with the signatures of the actual
10//! Linux syscalls.
11//!
12//! Some of this could be auto-generated from the Linux header file
13//! <linux/syscalls.h>, but we often need more information than it provides,
14//! such as which pointers are array slices, out parameters, or in-out
15//! parameters, which integers are owned or borrowed file descriptors, etc.
16
17#[macro_use]
18mod arch;
19mod conv;
20mod reg;
21#[cfg(any(feature = "time", feature = "thread", target_arch = "x86"))]
22mod vdso;
23#[cfg(any(feature = "time", feature = "thread", target_arch = "x86"))]
24mod vdso_wrappers;
25
26#[cfg(feature = "event")]
27pub(crate) mod event;
28#[cfg(any(
29    feature = "fs",
30    all(
31        not(feature = "use-libc-auxv"),
32        not(feature = "use-explicitly-provided-auxv"),
33        any(
34            feature = "param",
35            feature = "runtime",
36            feature = "thread",
37            feature = "time",
38            target_arch = "x86",
39        )
40    )
41))]
42pub(crate) mod fs;
43pub(crate) mod io;
44#[cfg(feature = "io_uring")]
45pub(crate) mod io_uring;
46#[cfg(feature = "mm")]
47pub(crate) mod mm;
48#[cfg(feature = "mount")]
49pub(crate) mod mount;
50#[cfg(feature = "net")]
51pub(crate) mod net;
52#[cfg(any(
53    feature = "param",
54    feature = "runtime",
55    feature = "thread",
56    feature = "time",
57    target_arch = "x86",
58))]
59pub(crate) mod param;
60#[cfg(feature = "pipe")]
61pub(crate) mod pipe;
62#[cfg(feature = "process")]
63pub(crate) mod process;
64#[cfg(feature = "pty")]
65pub(crate) mod pty;
66#[cfg(feature = "rand")]
67pub(crate) mod rand;
68#[cfg(feature = "runtime")]
69pub(crate) mod runtime;
70#[cfg(feature = "shm")]
71pub(crate) mod shm;
72#[cfg(feature = "system")]
73pub(crate) mod system;
74#[cfg(feature = "termios")]
75pub(crate) mod termios;
76#[cfg(feature = "thread")]
77pub(crate) mod thread;
78#[cfg(feature = "time")]
79pub(crate) mod time;
80
81// Re-export the maybe-polyfill `core::os::fd`.
82pub(crate) use crate::maybe_polyfill::os::fd;
83
84// The linux_raw backend doesn't use actual libc, so we define selected
85// libc-like definitions in a module called `c`.
86pub(crate) mod c;
87
88// Private modules used by multiple public modules.
89#[cfg(any(feature = "process", feature = "runtime"))]
90pub(crate) mod pid;
91#[cfg(any(feature = "process", feature = "thread"))]
92pub(crate) mod prctl;
93#[cfg(any(
94    feature = "fs",
95    feature = "process",
96    feature = "thread",
97    all(
98        not(feature = "use-libc-auxv"),
99        not(feature = "use-explicitly-provided-auxv"),
100        any(
101            feature = "param",
102            feature = "runtime",
103            feature = "time",
104            target_arch = "x86",
105        )
106    )
107))]
108pub(crate) mod ugid;
109
110/// The maximum number of buffers that can be passed into a vectored I/O system
111/// call on the current platform.
112const MAX_IOV: usize = linux_raw_sys::general::UIO_MAXIOV as usize;
rustix/backend/linux_raw/mod.rs

rustix/backend/linux_raw/
mod.rs
