summaryrefslogtreecommitdiffstats
path: root/vendor/rustix/src/backend/libc/c.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/rustix/src/backend/libc/c.rs')
-rw-r--r--vendor/rustix/src/backend/libc/c.rs499
1 files changed, 497 insertions, 2 deletions
diff --git a/vendor/rustix/src/backend/libc/c.rs b/vendor/rustix/src/backend/libc/c.rs
index 35d24d893..90d3c26f3 100644
--- a/vendor/rustix/src/backend/libc/c.rs
+++ b/vendor/rustix/src/backend/libc/c.rs
@@ -1,9 +1,504 @@
+#![allow(unused_imports)]
+
+// Import everything from libc, but we'll add some stuff and override some
+// things below.
pub(crate) use libc::*;
/// `PROC_SUPER_MAGIC`—The magic number for the procfs filesystem.
-#[cfg(all(any(target_os = "android", target_os = "linux"), target_env = "musl"))]
+#[cfg(all(linux_kernel, target_env = "musl"))]
pub(crate) const PROC_SUPER_MAGIC: u32 = 0x0000_9fa0;
/// `NFS_SUPER_MAGIC`—The magic number for the NFS filesystem.
-#[cfg(all(any(target_os = "android", target_os = "linux"), target_env = "musl"))]
+#[cfg(all(linux_kernel, target_env = "musl"))]
pub(crate) const NFS_SUPER_MAGIC: u32 = 0x0000_6969;
+
+// Submitted upstream in <https://github.com/rust-lang/libc/pull/3272>.
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const IPPROTO_ETHERNET: c_int = linux_raw_sys::net::IPPROTO_ETHERNET as _;
+
+// TODO: Upstream these.
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_TSN: c_int = linux_raw_sys::if_ether::ETH_P_TSN as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_ERSPAN2: c_int = linux_raw_sys::if_ether::ETH_P_ERSPAN2 as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_ERSPAN: c_int = linux_raw_sys::if_ether::ETH_P_ERSPAN as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_PROFINET: c_int = linux_raw_sys::if_ether::ETH_P_PROFINET as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_REALTEK: c_int = linux_raw_sys::if_ether::ETH_P_REALTEK as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_ETHERCAT: c_int = linux_raw_sys::if_ether::ETH_P_ETHERCAT as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_PREAUTH: c_int = linux_raw_sys::if_ether::ETH_P_PREAUTH as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_LLDP: c_int = linux_raw_sys::if_ether::ETH_P_LLDP as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_MRP: c_int = linux_raw_sys::if_ether::ETH_P_MRP as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_NCSI: c_int = linux_raw_sys::if_ether::ETH_P_NCSI as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_CFM: c_int = linux_raw_sys::if_ether::ETH_P_CFM as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_IBOE: c_int = linux_raw_sys::if_ether::ETH_P_IBOE as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_HSR: c_int = linux_raw_sys::if_ether::ETH_P_HSR as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_NSH: c_int = linux_raw_sys::if_ether::ETH_P_NSH as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_DSA_8021Q: c_int = linux_raw_sys::if_ether::ETH_P_DSA_8021Q as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_DSA_A5PSW: c_int = linux_raw_sys::if_ether::ETH_P_DSA_A5PSW as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_IFE: c_int = linux_raw_sys::if_ether::ETH_P_IFE as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_CAN: c_int = linux_raw_sys::if_ether::ETH_P_CAN as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_CANXL: c_int = linux_raw_sys::if_ether::ETH_P_CANXL as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_XDSA: c_int = linux_raw_sys::if_ether::ETH_P_XDSA as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_MAP: c_int = linux_raw_sys::if_ether::ETH_P_MAP as _;
+#[cfg(all(linux_kernel, feature = "net"))]
+pub(crate) const ETH_P_MCTP: c_int = linux_raw_sys::if_ether::ETH_P_MCTP as _;
+
+#[cfg(all(
+ linux_kernel,
+ any(
+ target_arch = "mips",
+ target_arch = "mips64",
+ target_arch = "sparc",
+ target_arch = "sparc64"
+ )
+))]
+pub(crate) const SIGEMT: c_int = linux_raw_sys::general::SIGEMT as _;
+
+// TODO: Upstream these.
+#[cfg(all(linux_kernel, feature = "termios"))]
+pub(crate) const IUCLC: tcflag_t = linux_raw_sys::general::IUCLC as _;
+#[cfg(all(linux_kernel, feature = "termios"))]
+pub(crate) const XCASE: tcflag_t = linux_raw_sys::general::XCASE as _;
+
+// On PowerPC, the regular `termios` has the `termios2` fields and there is no
+// `termios2`. linux-raw-sys has aliases `termios2` to `termios` to cover this
+// difference, but we still need to manually import it since `libc` doesn't
+// have this.
+#[cfg(all(
+ linux_kernel,
+ feature = "termios",
+ any(target_arch = "powerpc", target_arch = "powerpc64")
+))]
+pub(crate) use {
+ linux_raw_sys::general::{termios2, CIBAUD},
+ linux_raw_sys::ioctl::{TCGETS2, TCSETS2, TCSETSF2, TCSETSW2},
+};
+
+// Automatically enable “large file” support (LFS) features.
+
+#[cfg(target_os = "vxworks")]
+pub(super) use libc::_Vx_ticks64_t as _Vx_ticks_t;
+#[cfg(target_os = "aix")]
+pub(super) use libc::blksize64_t as blksize_t;
+#[cfg(linux_kernel)]
+pub(super) use libc::fallocate64 as fallocate;
+#[cfg(not(any(target_arch = "aarch64", target_arch = "riscv64")))]
+#[cfg(any(linux_like, target_os = "aix"))]
+pub(super) use libc::open64 as open;
+#[cfg(any(linux_kernel, target_os = "aix", target_os = "l4re"))]
+pub(super) use libc::posix_fallocate64 as posix_fallocate;
+#[cfg(any(all(linux_like, not(target_os = "android")), target_os = "aix"))]
+pub(super) use libc::{blkcnt64_t as blkcnt_t, rlim64_t as rlim_t};
+#[cfg(any(linux_like, target_os = "aix"))]
+pub(super) use libc::{
+ fstat64 as fstat, fstatat64 as fstatat, fstatfs64 as fstatfs, fstatvfs64 as fstatvfs,
+ ftruncate64 as ftruncate, getrlimit64 as getrlimit, ino64_t as ino_t, lseek64 as lseek,
+ mmap64 as mmap, off64_t as off_t, openat64 as openat, posix_fadvise64 as posix_fadvise,
+ rlimit64 as rlimit, setrlimit64 as setrlimit, statfs64 as statfs, statvfs64 as statvfs,
+ RLIM64_INFINITY as RLIM_INFINITY,
+};
+#[cfg(apple)]
+pub(super) use libc::{
+ host_info64_t as host_info_t, host_statistics64 as host_statistics,
+ vm_statistics64_t as vm_statistics_t,
+};
+#[cfg(not(all(linux_kernel, any(target_pointer_width = "32", target_arch = "mips64"))))]
+#[cfg(any(linux_like, target_os = "aix"))]
+pub(super) use libc::{lstat64 as lstat, stat64 as stat};
+#[cfg(any(linux_kernel, target_os = "aix", target_os = "emscripten"))]
+pub(super) use libc::{pread64 as pread, pwrite64 as pwrite};
+#[cfg(any(target_os = "aix", target_os = "linux", target_os = "emscripten"))]
+pub(super) use libc::{preadv64 as preadv, pwritev64 as pwritev};
+
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+pub(super) unsafe fn prlimit(
+ pid: libc::pid_t,
+ resource: libc::__rlimit_resource_t,
+ new_limit: *const libc::rlimit64,
+ old_limit: *mut libc::rlimit64,
+) -> libc::c_int {
+ // `prlimit64` wasn't supported in glibc until 2.13.
+ weak_or_syscall! {
+ fn prlimit64(
+ pid: libc::pid_t,
+ resource: libc::__rlimit_resource_t,
+ new_limit: *const libc::rlimit64,
+ old_limit: *mut libc::rlimit64
+ ) via SYS_prlimit64 -> libc::c_int
+ }
+
+ prlimit64(pid, resource, new_limit, old_limit)
+}
+
+#[cfg(all(target_os = "linux", target_env = "musl"))]
+pub(super) unsafe fn prlimit(
+ pid: libc::pid_t,
+ resource: libc::c_int,
+ new_limit: *const libc::rlimit64,
+ old_limit: *mut libc::rlimit64,
+) -> libc::c_int {
+ weak_or_syscall! {
+ fn prlimit64(
+ pid: libc::pid_t,
+ resource: libc::c_int,
+ new_limit: *const libc::rlimit64,
+ old_limit: *mut libc::rlimit64
+ ) via SYS_prlimit64 -> libc::c_int
+ }
+
+ prlimit64(pid, resource, new_limit, old_limit)
+}
+
+#[cfg(target_os = "android")]
+pub(super) unsafe fn prlimit(
+ pid: libc::pid_t,
+ resource: libc::c_int,
+ new_limit: *const libc::rlimit64,
+ old_limit: *mut libc::rlimit64,
+) -> libc::c_int {
+ weak_or_syscall! {
+ fn prlimit64(
+ pid: libc::pid_t,
+ resource: libc::c_int,
+ new_limit: *const libc::rlimit64,
+ old_limit: *mut libc::rlimit64
+ ) via SYS_prlimit64 -> libc::c_int
+ }
+
+ prlimit64(pid, resource, new_limit, old_limit)
+}
+
+// 64-bit offsets on 32-bit platforms are passed in endianness-specific
+// lo/hi pairs. See src/backend/linux_raw/conv.rs for details.
+#[cfg(all(linux_kernel, target_endian = "little", target_pointer_width = "32"))]
+fn lo(x: i64) -> usize {
+ (x >> 32) as usize
+}
+#[cfg(all(linux_kernel, target_endian = "little", target_pointer_width = "32"))]
+fn hi(x: i64) -> usize {
+ x as usize
+}
+#[cfg(all(linux_kernel, target_endian = "big", target_pointer_width = "32"))]
+fn lo(x: i64) -> usize {
+ x as usize
+}
+#[cfg(all(linux_kernel, target_endian = "big", target_pointer_width = "32"))]
+fn hi(x: i64) -> usize {
+ (x >> 32) as usize
+}
+
+#[cfg(target_os = "android")]
+mod readwrite_pv64 {
+ use super::*;
+
+ pub(in super::super) unsafe fn preadv64(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off64_t,
+ ) -> libc::ssize_t {
+ // Older Android libc lacks `preadv64`, so use the `weak!` mechanism to
+ // test for it, and call back to `libc::syscall`. We don't use
+ // `weak_or_syscall` here because we need to pass the 64-bit offset
+ // specially.
+ weak! {
+ fn preadv64(libc::c_int, *const libc::iovec, libc::c_int, libc::off64_t) -> libc::ssize_t
+ }
+ if let Some(fun) = preadv64.get() {
+ fun(fd, iov, iovcnt, offset)
+ } else {
+ #[cfg(target_pointer_width = "32")]
+ {
+ syscall! {
+ fn preadv(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset_hi: usize,
+ offset_lo: usize
+ ) via SYS_preadv -> libc::ssize_t
+ }
+ preadv(fd, iov, iovcnt, hi(offset), lo(offset))
+ }
+ #[cfg(target_pointer_width = "64")]
+ {
+ syscall! {
+ fn preadv(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off_t
+ ) via SYS_preadv -> libc::ssize_t
+ }
+ preadv(fd, iov, iovcnt, offset)
+ }
+ }
+ }
+ pub(in super::super) unsafe fn pwritev64(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off64_t,
+ ) -> libc::ssize_t {
+ // See the comments in `preadv64`.
+ weak! {
+ fn pwritev64(libc::c_int, *const libc::iovec, libc::c_int, libc::off64_t) -> libc::ssize_t
+ }
+ if let Some(fun) = pwritev64.get() {
+ fun(fd, iov, iovcnt, offset)
+ } else {
+ #[cfg(target_pointer_width = "32")]
+ {
+ syscall! {
+ fn pwritev(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset_hi: usize,
+ offset_lo: usize
+ ) via SYS_pwritev -> libc::ssize_t
+ }
+ pwritev(fd, iov, iovcnt, hi(offset), lo(offset))
+ }
+ #[cfg(target_pointer_width = "64")]
+ {
+ syscall! {
+ fn pwritev(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off_t
+ ) via SYS_pwritev -> libc::ssize_t
+ }
+ pwritev(fd, iov, iovcnt, offset)
+ }
+ }
+ }
+}
+#[cfg(target_os = "android")]
+pub(super) use readwrite_pv64::{preadv64 as preadv, pwritev64 as pwritev};
+
+// macOS added preadv and pwritev in version 11.0
+#[cfg(apple)]
+mod readwrite_pv {
+ weakcall! {
+ pub(in super::super) fn preadv(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off_t
+ ) -> libc::ssize_t
+ }
+ weakcall! {
+ pub(in super::super) fn pwritev(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int, offset: libc::off_t
+ ) -> libc::ssize_t
+ }
+}
+#[cfg(apple)]
+pub(super) use readwrite_pv::{preadv, pwritev};
+
+// glibc added `preadv64v2` and `pwritev64v2` in version 2.26.
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+mod readwrite_pv64v2 {
+ use super::*;
+
+ pub(in super::super) unsafe fn preadv64v2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off64_t,
+ flags: libc::c_int,
+ ) -> libc::ssize_t {
+ // Older glibc lacks `preadv64v2`, so use the `weak!` mechanism to
+ // test for it, and call back to `libc::syscall`. We don't use
+ // `weak_or_syscall` here because we need to pass the 64-bit offset
+ // specially.
+ weak! {
+ fn preadv64v2(libc::c_int, *const libc::iovec, libc::c_int, libc::off64_t, libc::c_int) -> libc::ssize_t
+ }
+ if let Some(fun) = preadv64v2.get() {
+ fun(fd, iov, iovcnt, offset, flags)
+ } else {
+ #[cfg(target_pointer_width = "32")]
+ {
+ syscall! {
+ fn preadv2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset_hi: usize,
+ offset_lo: usize,
+ flags: libc::c_int
+ ) via SYS_preadv2 -> libc::ssize_t
+ }
+ preadv2(fd, iov, iovcnt, hi(offset), lo(offset), flags)
+ }
+ #[cfg(target_pointer_width = "64")]
+ {
+ syscall! {
+ fn preadv2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off_t,
+ flags: libc::c_int
+ ) via SYS_preadv2 -> libc::ssize_t
+ }
+ preadv2(fd, iov, iovcnt, offset, flags)
+ }
+ }
+ }
+ pub(in super::super) unsafe fn pwritev64v2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off64_t,
+ flags: libc::c_int,
+ ) -> libc::ssize_t {
+ // See the comments in `preadv64v2`.
+ weak! {
+ fn pwritev64v2(libc::c_int, *const libc::iovec, libc::c_int, libc::off64_t, libc::c_int) -> libc::ssize_t
+ }
+ if let Some(fun) = pwritev64v2.get() {
+ fun(fd, iov, iovcnt, offset, flags)
+ } else {
+ #[cfg(target_pointer_width = "32")]
+ {
+ syscall! {
+ fn pwritev2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovec: libc::c_int,
+ offset_hi: usize,
+ offset_lo: usize,
+ flags: libc::c_int
+ ) via SYS_pwritev2 -> libc::ssize_t
+ }
+ pwritev2(fd, iov, iovcnt, hi(offset), lo(offset), flags)
+ }
+ #[cfg(target_pointer_width = "64")]
+ {
+ syscall! {
+ fn pwritev2(
+ fd: libc::c_int,
+ iov:*const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off_t,
+ flags: libc::c_int
+ ) via SYS_pwritev2 -> libc::ssize_t
+ }
+ pwritev2(fd, iov, iovcnt, offset, flags)
+ }
+ }
+ }
+}
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+pub(super) use readwrite_pv64v2::{preadv64v2 as preadv2, pwritev64v2 as pwritev2};
+
+// On non-glibc, assume we don't have `pwritev2`/`preadv2` in libc and use
+// `c::syscall` instead.
+#[cfg(any(
+ target_os = "android",
+ all(target_os = "linux", not(target_env = "gnu")),
+))]
+mod readwrite_pv64v2 {
+ use super::*;
+
+ pub(in super::super) unsafe fn preadv64v2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off64_t,
+ flags: libc::c_int,
+ ) -> libc::ssize_t {
+ #[cfg(target_pointer_width = "32")]
+ {
+ syscall! {
+ fn preadv2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset_hi: usize,
+ offset_lo: usize,
+ flags: libc::c_int
+ ) via SYS_preadv2 -> libc::ssize_t
+ }
+ preadv2(fd, iov, iovcnt, hi(offset), lo(offset), flags)
+ }
+ #[cfg(target_pointer_width = "64")]
+ {
+ syscall! {
+ fn preadv2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off_t,
+ flags: libc::c_int
+ ) via SYS_preadv2 -> libc::ssize_t
+ }
+ preadv2(fd, iov, iovcnt, offset, flags)
+ }
+ }
+ pub(in super::super) unsafe fn pwritev64v2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off64_t,
+ flags: libc::c_int,
+ ) -> libc::ssize_t {
+ #[cfg(target_pointer_width = "32")]
+ {
+ syscall! {
+ fn pwritev2(
+ fd: libc::c_int,
+ iov: *const libc::iovec,
+ iovcnt: libc::c_int,
+ offset_hi: usize,
+ offset_lo: usize,
+ flags: libc::c_int
+ ) via SYS_pwritev2 -> libc::ssize_t
+ }
+ pwritev2(fd, iov, iovcnt, hi(offset), lo(offset), flags)
+ }
+ #[cfg(target_pointer_width = "64")]
+ {
+ syscall! {
+ fn pwritev2(
+ fd: libc::c_int,
+ iov:*const libc::iovec,
+ iovcnt: libc::c_int,
+ offset: libc::off_t,
+ flags: libc::c_int
+ ) via SYS_pwritev2 -> libc::ssize_t
+ }
+ pwritev2(fd, iov, iovcnt, offset, flags)
+ }
+ }
+}
+#[cfg(any(
+ target_os = "android",
+ all(target_os = "linux", not(target_env = "gnu")),
+))]
+pub(super) use readwrite_pv64v2::{preadv64v2 as preadv2, pwritev64v2 as pwritev2};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-24 07:41:53 +0000