diff options
author | Bryant Mairs <bryant@mai.rs> | 2017-02-27 13:20:58 -0800 |
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committer | Bryant Mairs <bryant@mai.rs> | 2017-07-10 20:49:40 -0700 |
commit | e3529352e9bfb337c8ccdbfbfa660d23df247cf9 (patch) | |
tree | 512df7b19210aba0e37abc2a8132c6a5078138a9 /test/sys | |
parent | 30d820fe6ffdd50ab9fe4b5ed52467e0ff632928 (diff) | |
download | nix-e3529352e9bfb337c8ccdbfbfa660d23df247cf9.zip |
Use libc types for termios
This also removes the incorrect TCSASOFT definition as an enum type because it's
actually a bitfield.
Diffstat (limited to 'test/sys')
-rw-r--r-- | test/sys/test_termios.rs | 89 |
1 files changed, 87 insertions, 2 deletions
diff --git a/test/sys/test_termios.rs b/test/sys/test_termios.rs index a41304d7..0a2d1855 100644 --- a/test/sys/test_termios.rs +++ b/test/sys/test_termios.rs @@ -1,6 +1,18 @@ +use std::os::unix::prelude::*; + +use nix::{Error, fcntl, unistd}; use nix::errno::Errno; -use nix::sys::termios; -use nix::{Error, unistd}; +use nix::pty::openpty; +use nix::sys::termios::{self, ECHO, OPOST, OCRNL, tcgetattr}; +use nix::unistd::{read, write, close}; + +/// Helper function analogous to std::io::Write::write_all, but for `RawFd`s +fn write_all(f: RawFd, buf: &[u8]) { + let mut len = 0; + while len < buf.len() { + len += write(f, &buf[len..]).unwrap(); + } +} #[test] fn test_tcgetattr() { @@ -19,3 +31,76 @@ fn test_tcgetattr() { } } } + +// Test modifying output flags +#[test] +fn test_output_flags() { + // Open one pty to get attributes for the second one + let mut termios = { + let pty = openpty(None, None).unwrap(); + assert!(pty.master > 0); + assert!(pty.slave > 0); + let termios = tcgetattr(pty.master).unwrap(); + termios + }; + + // Make sure postprocessing '\r' isn't specified by default or this test is useless. + assert!(!termios.output_flags.contains(OPOST | OCRNL)); + + // Specify that '\r' characters should be transformed to '\n' + // OPOST is specified to enable post-processing + termios.output_flags.insert(OPOST | OCRNL); + + // Open a pty + let pty = openpty(None, &termios).unwrap(); + assert!(pty.master > 0); + assert!(pty.slave > 0); + + // Write into the master + let string = "foofoofoo\r"; + write_all(pty.master, string.as_bytes()); + + // Read from the slave verifying that the output has been properly transformed + let mut buf = [0u8; 10]; + ::read_exact(pty.slave, &mut buf); + let transformed_string = "foofoofoo\n"; + assert_eq!(&buf, transformed_string.as_bytes()); +} + +// Test modifying local flags +#[test] +fn test_local_flags() { + // Open one pty to get attributes for the second one + let mut termios = { + let pty = openpty(None, None).unwrap(); + assert!(pty.master > 0); + assert!(pty.slave > 0); + let termios = tcgetattr(pty.master).unwrap(); + termios + }; + + // Make sure echo is specified by default or this test is useless. + assert!(termios.local_flags.contains(ECHO)); + + // Disable local echo + termios.local_flags.remove(ECHO); + + // Open a new pty with our modified termios settings + let pty = openpty(None, &termios).unwrap(); + assert!(pty.master > 0); + assert!(pty.slave > 0); + + // Set the master is in nonblocking mode or reading will never return. + let flags = fcntl::fcntl(pty.master, fcntl::F_GETFL).unwrap(); + let new_flags = fcntl::OFlag::from_bits(flags).unwrap() | fcntl::O_NONBLOCK; + fcntl::fcntl(pty.master, fcntl::F_SETFL(new_flags)).unwrap(); + + // Write into the master + let string = "foofoofoo\r"; + write_all(pty.master, string.as_bytes()); + + // Try to read from the master, which should not have anything as echoing was disabled. + let mut buf = [0u8; 10]; + let read = read(pty.master, &mut buf).unwrap_err(); + assert_eq!(read, Error::Sys(Errno::EAGAIN)); +} |