aboutsummaryrefslogtreecommitdiff
path: root/ctr-std/src/sys
diff options
context:
space:
mode:
Diffstat (limited to 'ctr-std/src/sys')
-rw-r--r--ctr-std/src/sys/unix/fd.rs137
-rw-r--r--ctr-std/src/sys/unix/io.rs81
-rw-r--r--ctr-std/src/sys/unix/mod.rs2
-rw-r--r--ctr-std/src/sys/unix/stdio.rs81
4 files changed, 301 insertions, 0 deletions
diff --git a/ctr-std/src/sys/unix/fd.rs b/ctr-std/src/sys/unix/fd.rs
new file mode 100644
index 0000000..917a34b
--- /dev/null
+++ b/ctr-std/src/sys/unix/fd.rs
@@ -0,0 +1,137 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![unstable(reason = "not public", issue = "0", feature = "fd")]
+
+use cmp;
+use io::{self, Read};
+use libc::{self, c_int, c_void, ssize_t};
+use mem;
+use sys::cvt;
+use sys_common::AsInner;
+use sys_common::io::read_to_end_uninitialized;
+
+#[derive(Debug)]
+pub struct FileDesc {
+ fd: c_int,
+}
+
+fn max_len() -> usize {
+ // The maximum read limit on most posix-like systems is `SSIZE_MAX`,
+ // with the man page quoting that if the count of bytes to read is
+ // greater than `SSIZE_MAX` the result is "unspecified".
+ //
+ // On OSX, however, apparently the 64-bit libc is either buggy or
+ // intentionally showing odd behavior by rejecting any read with a size
+ // larger than or equal to INT_MAX. To handle both of these the read
+ // size is capped on both platforms.
+ if cfg!(target_os = "macos") {
+ <c_int>::max_value() as usize - 1
+ } else {
+ <ssize_t>::max_value() as usize
+ }
+}
+
+impl FileDesc {
+ pub fn new(fd: c_int) -> FileDesc {
+ FileDesc { fd: fd }
+ }
+
+ pub fn raw(&self) -> c_int { self.fd }
+
+ /// Extracts the actual filedescriptor without closing it.
+ pub fn into_raw(self) -> c_int {
+ let fd = self.fd;
+ mem::forget(self);
+ fd
+ }
+
+ pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
+ let ret = cvt(unsafe {
+ libc::read(self.fd,
+ buf.as_mut_ptr() as *mut c_void,
+ cmp::min(buf.len(), max_len()))
+ })?;
+ Ok(ret as usize)
+ }
+
+ pub fn read_to_end(&self, buf: &mut Vec<u8>) -> io::Result<usize> {
+ let mut me = self;
+ (&mut me).read_to_end(buf)
+ }
+
+ pub fn read_at(&self, buf: &mut [u8], offset: u64) -> io::Result<usize> {
+ unsafe fn cvt_pread64(fd: c_int, buf: *mut c_void, count: usize, offset: i64)
+ -> io::Result<isize>
+ {
+ use libc::pread as pread64;
+ cvt(pread64(fd, buf, count, offset))
+ }
+
+ unsafe {
+ cvt_pread64(self.fd,
+ buf.as_mut_ptr() as *mut c_void,
+ cmp::min(buf.len(), max_len()),
+ offset as i64)
+ .map(|n| n as usize)
+ }
+ }
+
+ pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
+ let ret = cvt(unsafe {
+ libc::write(self.fd,
+ buf.as_ptr() as *const c_void,
+ cmp::min(buf.len(), max_len()))
+ })?;
+ Ok(ret as usize)
+ }
+
+ pub fn write_at(&self, buf: &[u8], offset: u64) -> io::Result<usize> {
+ unsafe fn cvt_pwrite64(fd: c_int, buf: *const c_void, count: usize, offset: i64)
+ -> io::Result<isize>
+ {
+ use libc::pwrite as pwrite64;
+ cvt(pwrite64(fd, buf, count, offset))
+ }
+
+ unsafe {
+ cvt_pwrite64(self.fd,
+ buf.as_ptr() as *const c_void,
+ cmp::min(buf.len(), max_len()),
+ offset as i64)
+ .map(|n| n as usize)
+ }
+ }
+}
+
+impl<'a> Read for &'a FileDesc {
+ fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+ (**self).read(buf)
+ }
+
+ fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
+ unsafe { read_to_end_uninitialized(self, buf) }
+ }
+}
+
+impl AsInner<c_int> for FileDesc {
+ fn as_inner(&self) -> &c_int { &self.fd }
+}
+
+impl Drop for FileDesc {
+ fn drop(&mut self) {
+ // Note that errors are ignored when closing a file descriptor. The
+ // reason for this is that if an error occurs we don't actually know if
+ // the file descriptor was closed or not, and if we retried (for
+ // something like EINTR), we might close another valid file descriptor
+ // (opened after we closed ours.
+ let _ = unsafe { libc::close(self.fd) };
+ }
+}
diff --git a/ctr-std/src/sys/unix/io.rs b/ctr-std/src/sys/unix/io.rs
new file mode 100644
index 0000000..6d38b00
--- /dev/null
+++ b/ctr-std/src/sys/unix/io.rs
@@ -0,0 +1,81 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use io;
+use libc;
+use sys::fd::FileDesc;
+
+pub struct Stdin(());
+pub struct Stdout(());
+pub struct Stderr(());
+
+impl Stdin {
+ pub fn new() -> io::Result<Stdin> { Ok(Stdin(())) }
+
+ pub fn read(&self, data: &mut [u8]) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDIN_FILENO);
+ let ret = fd.read(data);
+ fd.into_raw();
+ ret
+ }
+
+ pub fn read_to_end(&self, buf: &mut Vec<u8>) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDIN_FILENO);
+ let ret = fd.read_to_end(buf);
+ fd.into_raw();
+ ret
+ }
+}
+
+impl Stdout {
+ pub fn new() -> io::Result<Stdout> { Ok(Stdout(())) }
+
+ pub fn write(&self, data: &[u8]) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDOUT_FILENO);
+ let ret = fd.write(data);
+ fd.into_raw();
+ ret
+ }
+
+ pub fn flush(&self) -> io::Result<()> {
+ Ok(())
+ }
+}
+
+impl Stderr {
+ pub fn new() -> io::Result<Stderr> { Ok(Stderr(())) }
+
+ pub fn write(&self, data: &[u8]) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDERR_FILENO);
+ let ret = fd.write(data);
+ fd.into_raw();
+ ret
+ }
+
+ pub fn flush(&self) -> io::Result<()> {
+ Ok(())
+ }
+}
+
+// FIXME: right now this raw stderr handle is used in a few places because
+// std::io::stderr_raw isn't exposed, but once that's exposed this impl
+// should go away
+impl io::Write for Stderr {
+ fn write(&mut self, data: &[u8]) -> io::Result<usize> {
+ Stderr::write(self, data)
+ }
+
+ fn flush(&mut self) -> io::Result<()> {
+ Stderr::flush(self)
+ }
+}
+
+pub const EBADF_ERR: i32 = ::libc::EBADF as i32;
+pub const STDIN_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE;
diff --git a/ctr-std/src/sys/unix/mod.rs b/ctr-std/src/sys/unix/mod.rs
index ec657d8..0da1d3b 100644
--- a/ctr-std/src/sys/unix/mod.rs
+++ b/ctr-std/src/sys/unix/mod.rs
@@ -15,6 +15,8 @@ use libc;
pub mod ext;
pub mod fast_thread_local;
+pub mod fd;
+pub mod stdio;
pub mod memchr;
pub mod mutex;
pub mod os;
diff --git a/ctr-std/src/sys/unix/stdio.rs b/ctr-std/src/sys/unix/stdio.rs
new file mode 100644
index 0000000..6d38b00
--- /dev/null
+++ b/ctr-std/src/sys/unix/stdio.rs
@@ -0,0 +1,81 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use io;
+use libc;
+use sys::fd::FileDesc;
+
+pub struct Stdin(());
+pub struct Stdout(());
+pub struct Stderr(());
+
+impl Stdin {
+ pub fn new() -> io::Result<Stdin> { Ok(Stdin(())) }
+
+ pub fn read(&self, data: &mut [u8]) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDIN_FILENO);
+ let ret = fd.read(data);
+ fd.into_raw();
+ ret
+ }
+
+ pub fn read_to_end(&self, buf: &mut Vec<u8>) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDIN_FILENO);
+ let ret = fd.read_to_end(buf);
+ fd.into_raw();
+ ret
+ }
+}
+
+impl Stdout {
+ pub fn new() -> io::Result<Stdout> { Ok(Stdout(())) }
+
+ pub fn write(&self, data: &[u8]) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDOUT_FILENO);
+ let ret = fd.write(data);
+ fd.into_raw();
+ ret
+ }
+
+ pub fn flush(&self) -> io::Result<()> {
+ Ok(())
+ }
+}
+
+impl Stderr {
+ pub fn new() -> io::Result<Stderr> { Ok(Stderr(())) }
+
+ pub fn write(&self, data: &[u8]) -> io::Result<usize> {
+ let fd = FileDesc::new(libc::STDERR_FILENO);
+ let ret = fd.write(data);
+ fd.into_raw();
+ ret
+ }
+
+ pub fn flush(&self) -> io::Result<()> {
+ Ok(())
+ }
+}
+
+// FIXME: right now this raw stderr handle is used in a few places because
+// std::io::stderr_raw isn't exposed, but once that's exposed this impl
+// should go away
+impl io::Write for Stderr {
+ fn write(&mut self, data: &[u8]) -> io::Result<usize> {
+ Stderr::write(self, data)
+ }
+
+ fn flush(&mut self) -> io::Result<()> {
+ Stderr::flush(self)
+ }
+}
+
+pub const EBADF_ERR: i32 = ::libc::EBADF as i32;
+pub const STDIN_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE;
generated by cgit v1.2.3 (git 2.25.1) at 2026-03-14 03:35:16 +0000