From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/rustix/src/imp/libc/offset.rs | 361 +++++++++++++++++++++++++++++++++++ 1 file changed, 361 insertions(+) create mode 100644 vendor/rustix/src/imp/libc/offset.rs (limited to 'vendor/rustix/src/imp/libc/offset.rs') diff --git a/vendor/rustix/src/imp/libc/offset.rs b/vendor/rustix/src/imp/libc/offset.rs new file mode 100644 index 000000000..3002e8bdd --- /dev/null +++ b/vendor/rustix/src/imp/libc/offset.rs @@ -0,0 +1,361 @@ +//! Automatically enable “large file” support features. + +#[cfg(not(windows))] +use super::c; + +#[cfg(not(any( + windows, + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", +)))] +pub(super) use c::{ + fstat as libc_fstat, fstatat as libc_fstatat, ftruncate as libc_ftruncate, lseek as libc_lseek, + off_t as libc_off_t, +}; + +#[cfg(any( + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", +))] +pub(super) use c::{ + fstat64 as libc_fstat, fstatat64 as libc_fstatat, ftruncate64 as libc_ftruncate, + lseek64 as libc_lseek, off64_t as libc_off_t, rlimit64 as libc_rlimit, +}; + +#[cfg(not(any( + windows, + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", + target_os = "wasi", +)))] +#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise` +pub(super) use c::mmap as libc_mmap; + +#[cfg(not(any( + windows, + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "fuchsia", + target_os = "l4re", + target_os = "redox", + target_os = "wasi", +)))] +pub(super) use c::{rlimit as libc_rlimit, RLIM_INFINITY as LIBC_RLIM_INFINITY}; + +#[cfg(not(any( + windows, + target_os = "android", + target_os = "fuchsia", + target_os = "emscripten", + target_os = "l4re", + target_os = "linux", + target_os = "wasi", +)))] +pub(super) use c::{getrlimit as libc_getrlimit, setrlimit as libc_setrlimit}; + +// TODO: Add `RLIM64_INFINITY` to upstream libc. +#[cfg(any( + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", +))] +pub(super) const LIBC_RLIM_INFINITY: u64 = !0_u64; + +#[cfg(any( + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", +))] +pub(super) use c::{getrlimit64 as libc_getrlimit, setrlimit64 as libc_setrlimit}; + +#[cfg(any( + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", +))] +#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise` +pub(super) use c::mmap64 as libc_mmap; + +// `prlimit64` wasn't supported in glibc until 2.13. +#[cfg(all(target_os = "linux", target_env = "gnu"))] +weak_or_syscall! { + fn prlimit64( + pid: c::pid_t, + resource: c::__rlimit_resource_t, + new_limit: *const c::rlimit64, + old_limit: *mut c::rlimit64 + ) via SYS_prlimit64 -> c::c_int +} +#[cfg(all(target_os = "linux", target_env = "musl"))] +weak_or_syscall! { + fn prlimit64( + pid: c::pid_t, + resource: c::c_int, + new_limit: *const c::rlimit64, + old_limit: *mut c::rlimit64 + ) via SYS_prlimit64 -> c::c_int +} +#[cfg(target_os = "android")] +weak_or_syscall! { + fn prlimit64( + pid: c::pid_t, + resource: c::c_int, + new_limit: *const c::rlimit64, + old_limit: *mut c::rlimit64 + ) via SYS_prlimit64 -> c::c_int +} +#[cfg(all(target_os = "linux", target_env = "gnu"))] +pub(super) unsafe fn libc_prlimit( + pid: c::pid_t, + resource: c::__rlimit_resource_t, + new_limit: *const c::rlimit64, + old_limit: *mut c::rlimit64, +) -> c::c_int { + prlimit64(pid, resource, new_limit, old_limit) +} +#[cfg(all(target_os = "linux", target_env = "musl"))] +pub(super) unsafe fn libc_prlimit( + pid: c::pid_t, + resource: c::c_int, + new_limit: *const c::rlimit64, + old_limit: *mut c::rlimit64, +) -> c::c_int { + prlimit64(pid, resource, new_limit, old_limit) +} +#[cfg(target_os = "android")] +pub(super) unsafe fn libc_prlimit( + pid: c::pid_t, + resource: c::c_int, + new_limit: *const c::rlimit64, + old_limit: *mut c::rlimit64, +) -> c::c_int { + prlimit64(pid, resource, new_limit, old_limit) +} + +#[cfg(not(any( + windows, + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", + target_os = "redox", +)))] +pub(super) use c::openat as libc_openat; +#[cfg(any( + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", +))] +pub(super) use c::openat64 as libc_openat; + +#[cfg(target_os = "fuchsia")] +pub(super) use c::fallocate as libc_fallocate; +#[cfg(any(target_os = "android", target_os = "linux"))] +pub(super) use c::fallocate64 as libc_fallocate; +#[cfg(not(any( + windows, + target_os = "android", + target_os = "dragonfly", + target_os = "emscripten", + target_os = "illumos", + target_os = "ios", + target_os = "linux", + target_os = "l4re", + target_os = "macos", + target_os = "netbsd", + target_os = "openbsd", + target_os = "redox", +)))] +pub(super) use c::posix_fadvise as libc_posix_fadvise; +#[cfg(any( + target_os = "android", + target_os = "emscripten", + target_os = "linux", + target_os = "l4re", +))] +pub(super) use c::posix_fadvise64 as libc_posix_fadvise; + +#[cfg(all(not(any( + windows, + target_os = "android", + target_os = "linux", + target_os = "emscripten", +))))] +pub(super) use c::{pread as libc_pread, pwrite as libc_pwrite}; +#[cfg(any(target_os = "android", target_os = "linux", target_os = "emscripten"))] +pub(super) use c::{pread64 as libc_pread, pwrite64 as libc_pwrite}; +#[cfg(any(target_os = "linux", target_os = "emscripten"))] +pub(super) use c::{preadv64 as libc_preadv, pwritev64 as libc_pwritev}; +#[cfg(target_os = "android")] +mod readwrite_pv64 { + use super::c; + + // 64-bit offsets on 32-bit platforms are passed in endianness-specific + // lo/hi pairs. See src/imp/linux_raw/conv.rs for details. + #[cfg(all(target_endian = "little", target_pointer_width = "32"))] + fn lo(x: u64) -> usize { + (x >> 32) as usize + } + #[cfg(all(target_endian = "little", target_pointer_width = "32"))] + fn hi(x: u64) -> usize { + (x & 0xffff_ffff) as usize + } + #[cfg(all(target_endian = "big", target_pointer_width = "32"))] + fn lo(x: u64) -> usize { + (x & 0xffff_ffff) as usize + } + #[cfg(all(target_endian = "big", target_pointer_width = "32"))] + fn hi(x: u64) -> usize { + (x >> 32) as usize + } + + pub(in super::super) unsafe fn preadv64( + fd: c::c_int, + iov: *const c::iovec, + iovcnt: c::c_int, + offset: c::off64_t, + ) -> c::ssize_t { + // Older Android libc lacks `preadv64`, so use the `weak!` mechanism to + // test for it, and call back to `c::syscall`. We don't use + // `weak_or_syscall` here because we need to pass the 64-bit offset + // specially. + weak! { + fn preadv64(c::c_int, *const c::iovec, c::c_int, c::off64_t) -> c::ssize_t + } + if let Some(fun) = preadv64.get() { + fun(fd, iov, iovcnt, offset) + } else { + #[cfg(target_pointer_width = "32")] + { + c::syscall( + c::SYS_preadv, + fd, + iov, + iovcnt, + hi(offset as u64), + lo(offset as u64), + ) as c::ssize_t + } + #[cfg(target_pointer_width = "64")] + { + c::syscall(c::SYS_preadv, fd, iov, iovcnt, offset) as c::ssize_t + } + } + } + pub(in super::super) unsafe fn pwritev64( + fd: c::c_int, + iov: *const c::iovec, + iovcnt: c::c_int, + offset: c::off64_t, + ) -> c::ssize_t { + // See the comments in `preadv64`. + weak! { + fn pwritev64(c::c_int, *const c::iovec, c::c_int, c::off64_t) -> c::ssize_t + } + if let Some(fun) = pwritev64.get() { + fun(fd, iov, iovcnt, offset) + } else { + #[cfg(target_pointer_width = "32")] + { + c::syscall( + c::SYS_pwritev, + fd, + iov, + iovcnt, + hi(offset as u64), + lo(offset as u64), + ) as c::ssize_t + } + #[cfg(target_pointer_width = "64")] + { + c::syscall(c::SYS_pwritev, fd, iov, iovcnt, offset) as c::ssize_t + } + } + } +} +#[cfg(not(any( + windows, + target_os = "android", + target_os = "emscripten", + target_os = "ios", + target_os = "linux", + target_os = "macos", + target_os = "redox", +)))] +pub(super) use c::{preadv as libc_preadv, pwritev as libc_pwritev}; +#[cfg(target_os = "android")] +pub(super) use readwrite_pv64::{preadv64 as libc_preadv, pwritev64 as libc_pwritev}; +// macOS added preadv and pwritev in version 11.0 +#[cfg(any(target_os = "ios", target_os = "macos"))] +mod readwrite_pv { + use super::c; + + weakcall! { + pub(in super::super) fn preadv( + fd: c::c_int, + iov: *const c::iovec, + iovcnt: c::c_int, + offset: c::off_t + ) -> c::ssize_t + } + weakcall! { + pub(in super::super) fn pwritev( + fd: c::c_int, + iov: *const c::iovec, + iovcnt: c::c_int, offset: c::off_t + ) -> c::ssize_t + } +} +#[cfg(all(target_os = "linux", target_env = "gnu"))] +pub(super) use c::{preadv64v2 as libc_preadv2, pwritev64v2 as libc_pwritev2}; +#[cfg(any(target_os = "ios", target_os = "macos"))] +pub(super) use readwrite_pv::{preadv as libc_preadv, pwritev as libc_pwritev}; + +#[cfg(not(any( + windows, + target_os = "android", + target_os = "dragonfly", + target_os = "fuchsia", + target_os = "illumos", + target_os = "ios", + target_os = "linux", + target_os = "l4re", + target_os = "macos", + target_os = "netbsd", + target_os = "openbsd", + target_os = "redox", +)))] +pub(super) use c::posix_fallocate as libc_posix_fallocate; +#[cfg(any(target_os = "l4re"))] +pub(super) use c::posix_fallocate64 as libc_posix_fallocate; +#[cfg(not(any( + windows, + target_os = "android", + target_os = "emscripten", + target_os = "illumos", + target_os = "linux", + target_os = "l4re", + target_os = "netbsd", + target_os = "redox", + target_os = "wasi", +)))] +pub(super) use {c::fstatfs as libc_fstatfs, c::statfs as libc_statfs}; + +#[cfg(any( + target_os = "android", + target_os = "linux", + target_os = "emscripten", + target_os = "l4re", +))] +pub(super) use {c::fstatfs64 as libc_fstatfs, c::statfs64 as libc_statfs}; -- cgit v1.2.3