Merge #1785

1785: Remove deprecated items r=asomers a=SteveLauC

#### What this pr does
1. Convert `assert!(x == y)` to `assert_eq!(x, y)`
2. Convert `assert!(x != y)` to `assert_ne!(x, y)`
3. Add `.unwrap()` to unused `Result/Option` (in code comments)
4. Convert `std::ixx::MAX` to `ixx::MAX`
5. Convert `Box<Trait>` to `Box<dyn Trait>`

Co-authored-by: SteveLauC <stevelauc@outlook.com>
Co-authored-by: SteveLau <stevelauc@outlook.com>

src/sched.rs

@@ -233,8 +233,8 @@ mod sched_affinity {
     /// use nix::unistd::Pid;
     ///
     /// let mut cpu_set = CpuSet::new();
-    /// cpu_set.set(0);
-    /// sched_setaffinity(Pid::from_raw(0), &cpu_set);
+    /// cpu_set.set(0).unwrap();
+    /// sched_setaffinity(Pid::from_raw(0), &cpu_set).unwrap();
     /// ```
     pub fn sched_setaffinity(pid: Pid, cpuset: &CpuSet) -> Result<()> {
         let res = unsafe {

src/sys/personality.rs

@@ -86,7 +86,7 @@ pub fn get() -> Result<Persona> {
 /// # use nix::sys::personality::{self, Persona};
 /// let mut pers = personality::get().unwrap();
 /// assert!(!pers.contains(Persona::ADDR_NO_RANDOMIZE));
-/// personality::set(pers | Persona::ADDR_NO_RANDOMIZE);
+/// personality::set(pers | Persona::ADDR_NO_RANDOMIZE).unwrap();
 /// ```
 pub fn set(persona: Persona) -> Result<Persona> {
     let res = unsafe {

src/sys/quota.rs

@@ -6,11 +6,11 @@
 //!
 //! ```rust,no_run
 //! # use nix::sys::quota::{Dqblk, quotactl_on, quotactl_set, QuotaFmt, QuotaType, QuotaValidFlags};
-//! quotactl_on(QuotaType::USRQUOTA, "/dev/sda1", QuotaFmt::QFMT_VFS_V1, "aquota.user");
+//! quotactl_on(QuotaType::USRQUOTA, "/dev/sda1", QuotaFmt::QFMT_VFS_V1, "aquota.user").unwrap();
 //! let mut dqblk: Dqblk = Default::default();
 //! dqblk.set_blocks_hard_limit(10000);
 //! dqblk.set_blocks_soft_limit(8000);
-//! quotactl_set(QuotaType::USRQUOTA, "/dev/sda1", 50, &dqblk, QuotaValidFlags::QIF_BLIMITS);
+//! quotactl_set(QuotaType::USRQUOTA, "/dev/sda1", 50, &dqblk, QuotaValidFlags::QIF_BLIMITS).unwrap();
 //! ```
 use std::default::Default;
 use std::{mem, ptr};

src/sys/socket/mod.rs

@@ -677,7 +677,7 @@ pub enum ControlMessageOwned {
     ///     None).unwrap();
     /// setsockopt(in_socket, sockopt::ReceiveTimestamp, &true).unwrap();
     /// let localhost = SockaddrIn::from_str("127.0.0.1:0").unwrap();
-    /// bind(in_socket, &localhost);
+    /// bind(in_socket, &localhost).unwrap();
     /// let address: SockaddrIn = getsockname(in_socket).unwrap();
     /// // Get initial time
     /// let time0 = SystemTime::now();

src/sys/socket/sockopt.rs

@@ -982,7 +982,7 @@ mod test {
         let a_cred = getsockopt(a, super::PeerCredentials).unwrap();
         let b_cred = getsockopt(b, super::PeerCredentials).unwrap();
         assert_eq!(a_cred, b_cred);
-        assert!(a_cred.pid() != 0);
+        assert_ne!(a_cred.pid(), 0);
     }
 
     #[test]

src/sys/termios.rs

@@ -64,9 +64,9 @@
 //! # use nix::sys::termios::{BaudRate, cfsetispeed, cfsetospeed, cfsetspeed, Termios};
 //! # fn main() {
 //! # let mut t: Termios = unsafe { std::mem::zeroed() };
-//! cfsetispeed(&mut t, BaudRate::B9600);
-//! cfsetospeed(&mut t, BaudRate::B9600);
-//! cfsetspeed(&mut t, BaudRate::B9600);
+//! cfsetispeed(&mut t, BaudRate::B9600).unwrap();
+//! cfsetospeed(&mut t, BaudRate::B9600).unwrap();
+//! cfsetspeed(&mut t, BaudRate::B9600).unwrap();
 //! # }
 //! ```
 //!
@@ -76,10 +76,10 @@
 //! # use nix::sys::termios::{BaudRate, cfgetispeed, cfgetospeed, cfsetispeed, cfsetspeed, Termios};
 //! # fn main() {
 //! # let mut t: Termios = unsafe { std::mem::zeroed() };
-//! # cfsetspeed(&mut t, BaudRate::B9600);
+//! # cfsetspeed(&mut t, BaudRate::B9600).unwrap();
 //! let speed = cfgetispeed(&t);
 //! assert_eq!(speed, cfgetospeed(&t));
-//! cfsetispeed(&mut t, speed);
+//! cfsetispeed(&mut t, speed).unwrap();
 //! # }
 //! ```
 //!

src/sys/time.rs

@@ -193,10 +193,10 @@ const SECS_PER_MINUTE: i64 = 60;
 const SECS_PER_HOUR: i64 = 3600;
 
 #[cfg(target_pointer_width = "64")]
-const TS_MAX_SECONDS: i64 = (::std::i64::MAX / NANOS_PER_SEC) - 1;
+const TS_MAX_SECONDS: i64 = (i64::MAX / NANOS_PER_SEC) - 1;
 
 #[cfg(target_pointer_width = "32")]
-const TS_MAX_SECONDS: i64 = ::std::isize::MAX as i64;
+const TS_MAX_SECONDS: i64 = isize::MAX as i64;
 
 const TS_MIN_SECONDS: i64 = -TS_MAX_SECONDS;
 
@@ -453,10 +453,10 @@ pub struct TimeVal(timeval);
 const MICROS_PER_SEC: i64 = 1_000_000;
 
 #[cfg(target_pointer_width = "64")]
-const TV_MAX_SECONDS: i64 = (::std::i64::MAX / MICROS_PER_SEC) - 1;
+const TV_MAX_SECONDS: i64 = (i64::MAX / MICROS_PER_SEC) - 1;
 
 #[cfg(target_pointer_width = "32")]
-const TV_MAX_SECONDS: i64 = ::std::isize::MAX as i64;
+const TV_MAX_SECONDS: i64 = isize::MAX as i64;
 
 const TV_MIN_SECONDS: i64 = -TV_MAX_SECONDS;
 
@@ -713,7 +713,7 @@ mod test {
 
     #[test]
     pub fn test_timespec() {
-        assert!(TimeSpec::seconds(1) != TimeSpec::zero());
+        assert_ne!(TimeSpec::seconds(1), TimeSpec::zero());
         assert_eq!(
             TimeSpec::seconds(1) + TimeSpec::seconds(2),
             TimeSpec::seconds(3)
@@ -743,7 +743,7 @@ mod test {
 
     #[test]
     pub fn test_timespec_ord() {
-        assert!(TimeSpec::seconds(1) == TimeSpec::nanoseconds(1_000_000_000));
+        assert_eq!(TimeSpec::seconds(1), TimeSpec::nanoseconds(1_000_000_000));
         assert!(TimeSpec::seconds(1) < TimeSpec::nanoseconds(1_000_000_001));
         assert!(TimeSpec::seconds(1) > TimeSpec::nanoseconds(999_999_999));
         assert!(TimeSpec::seconds(-1) < TimeSpec::nanoseconds(-999_999_999));
@@ -765,7 +765,7 @@ mod test {
 
     #[test]
     pub fn test_timeval() {
-        assert!(TimeVal::seconds(1) != TimeVal::zero());
+        assert_ne!(TimeVal::seconds(1), TimeVal::zero());
         assert_eq!(
             TimeVal::seconds(1) + TimeVal::seconds(2),
             TimeVal::seconds(3)
@@ -778,7 +778,7 @@ mod test {
 
     #[test]
     pub fn test_timeval_ord() {
-        assert!(TimeVal::seconds(1) == TimeVal::microseconds(1_000_000));
+        assert_eq!(TimeVal::seconds(1), TimeVal::microseconds(1_000_000));
         assert!(TimeVal::seconds(1) < TimeVal::microseconds(1_000_001));
         assert!(TimeVal::seconds(1) > TimeVal::microseconds(999_999));
         assert!(TimeVal::seconds(-1) < TimeVal::microseconds(-999_999));

src/unistd.rs

@@ -1572,7 +1572,7 @@ pub fn getgroups() -> Result<Vec<Gid>> {
 /// # use std::error::Error;
 /// # use nix::unistd::*;
 /// #
-/// # fn try_main() -> Result<(), Box<Error>> {
+/// # fn try_main() -> Result<(), Box<dyn Error>> {
 /// let uid = Uid::from_raw(33);
 /// let gid = Gid::from_raw(34);
 /// setgroups(&[gid])?;
@@ -1698,7 +1698,7 @@ pub fn getgrouplist(user: &CStr, group: Gid) -> Result<Vec<Gid>> {
 /// # use std::ffi::CString;
 /// # use nix::unistd::*;
 /// #
-/// # fn try_main() -> Result<(), Box<Error>> {
+/// # fn try_main() -> Result<(), Box<dyn Error>> {
 /// let user = CString::new("www-data").unwrap();
 /// let uid = Uid::from_raw(33);
 /// let gid = Gid::from_raw(33);
@@ -3121,7 +3121,7 @@ impl User {
     /// use nix::unistd::{Uid, User};
     /// // Returns an Result<Option<User>>, thus the double unwrap.
     /// let res = User::from_uid(Uid::from_raw(0)).unwrap().unwrap();
-    /// assert!(res.name == "root");
+    /// assert_eq!(res.name, "root");
     /// ```
     pub fn from_uid(uid: Uid) -> Result<Option<Self>> {
         User::from_anything(|pwd, cbuf, cap, res| {
@@ -3140,7 +3140,7 @@ impl User {
     /// use nix::unistd::User;
     /// // Returns an Result<Option<User>>, thus the double unwrap.
     /// let res = User::from_name("root").unwrap().unwrap();
-    /// assert!(res.name == "root");
+    /// assert_eq!(res.name, "root");
     /// ```
     pub fn from_name(name: &str) -> Result<Option<Self>> {
         let name = CString::new(name).unwrap();

test/sys/test_pthread.rs

@@ -11,7 +11,7 @@ fn test_pthread_self() {
 #[test]
 fn test_pthread_self() {
     let tid = pthread_self();
-    assert!(tid != 0);
+    assert_ne!(tid, 0);
 }
 
 #[test]

test/sys/test_ptrace.rs

@@ -33,7 +33,7 @@ fn test_ptrace_setoptions() {
     require_capability!("test_ptrace_setoptions", CAP_SYS_PTRACE);
     let err = ptrace::setoptions(getpid(), Options::PTRACE_O_TRACESYSGOOD)
         .unwrap_err();
-    assert!(err != Errno::EOPNOTSUPP);
+    assert_ne!(err, Errno::EOPNOTSUPP);
 }
 
 // Just make sure ptrace_getevent can be called at all, for now.
@@ -42,7 +42,7 @@ fn test_ptrace_setoptions() {
 fn test_ptrace_getevent() {
     require_capability!("test_ptrace_getevent", CAP_SYS_PTRACE);
     let err = ptrace::getevent(getpid()).unwrap_err();
-    assert!(err != Errno::EOPNOTSUPP);
+    assert_ne!(err, Errno::EOPNOTSUPP);
 }
 
 // Just make sure ptrace_getsiginfo can be called at all, for now.

test/test_dir.rs

@@ -20,7 +20,7 @@ fn flags() -> OFlag {
 fn read() {
     let tmp = tempdir().unwrap();
     File::create(&tmp.path().join("foo")).unwrap();
-    ::std::os::unix::fs::symlink("foo", tmp.path().join("bar")).unwrap();
+    std::os::unix::fs::symlink("foo", tmp.path().join("bar")).unwrap();
     let mut dir = Dir::open(tmp.path(), flags(), Mode::empty()).unwrap();
     let mut entries: Vec<_> = dir.iter().map(|e| e.unwrap()).collect();
     entries.sort_by(|a, b| a.file_name().cmp(b.file_name()));

test/test_pty.rs

@@ -58,7 +58,7 @@ fn test_ptsname_copy() {
     assert_eq!(slave_name1, slave_name2);
     // Also make sure that the string was actually copied and they point to different parts of
     // memory.
-    assert!(slave_name1.as_ptr() != slave_name2.as_ptr());
+    assert_ne!(slave_name1.as_ptr(), slave_name2.as_ptr());
 }
 
 /// Test data copying of `ptsname_r`
@@ -73,7 +73,7 @@ fn test_ptsname_r_copy() {
     let slave_name1 = ptsname_r(&master_fd).unwrap();
     let slave_name2 = ptsname_r(&master_fd).unwrap();
     assert_eq!(slave_name1, slave_name2);
-    assert!(slave_name1.as_ptr() != slave_name2.as_ptr());
+    assert_ne!(slave_name1.as_ptr(), slave_name2.as_ptr());
 }
 
 /// Test that `ptsname` returns different names for different devices
@@ -93,7 +93,7 @@ fn test_ptsname_unique() {
     // Get the name of the slave
     let slave_name1 = unsafe { ptsname(&master1_fd) }.unwrap();
     let slave_name2 = unsafe { ptsname(&master2_fd) }.unwrap();
-    assert!(slave_name1 != slave_name2);
+    assert_ne!(slave_name1, slave_name2);
 }
 
 /// Common setup for testing PTTY pairs

test/test_stat.rs

@@ -378,8 +378,8 @@ fn test_mknod() {
     let target = tempdir.path().join(file_name);
     mknod(&target, SFlag::S_IFREG, Mode::S_IRWXU, 0).unwrap();
     let mode = lstat(&target).unwrap().st_mode as mode_t;
-    assert!(mode & libc::S_IFREG == libc::S_IFREG);
-    assert!(mode & libc::S_IRWXU == libc::S_IRWXU);
+    assert_eq!(mode & libc::S_IFREG, libc::S_IFREG);
+    assert_eq!(mode & libc::S_IRWXU, libc::S_IRWXU);
 }
 
 #[test]
@@ -416,6 +416,6 @@ fn test_mknodat() {
     )
     .unwrap()
     .st_mode as mode_t;
-    assert!(mode & libc::S_IFREG == libc::S_IFREG);
-    assert!(mode & libc::S_IRWXU == libc::S_IRWXU);
+    assert_eq!(mode & libc::S_IFREG, libc::S_IFREG);
+    assert_eq!(mode & libc::S_IRWXU, libc::S_IRWXU);
 }

test/test_unistd.rs

@@ -114,7 +114,7 @@ fn test_mkfifo() {
 
     let stats = stat::stat(&mkfifo_fifo).unwrap();
     let typ = stat::SFlag::from_bits_truncate(stats.st_mode as mode_t);
-    assert!(typ == SFlag::S_IFIFO);
+    assert_eq!(typ, SFlag::S_IFIFO);
 }
 
 #[test]
@@ -300,7 +300,7 @@ fn test_initgroups() {
 }
 
 #[cfg(not(any(target_os = "fuchsia", target_os = "redox")))]
-macro_rules! execve_test_factory(
+macro_rules! execve_test_factory (
     ($test_name:ident, $syscall:ident, $exe: expr $(, $pathname:expr, $flags:expr)*) => (
 
     #[cfg(test)]
@@ -694,9 +694,9 @@ fn test_sysconf_unsupported() {
 #[test]
 fn test_getresuid() {
     let resuids = getresuid().unwrap();
-    assert!(resuids.real.as_raw() != libc::uid_t::max_value());
-    assert!(resuids.effective.as_raw() != libc::uid_t::max_value());
-    assert!(resuids.saved.as_raw() != libc::uid_t::max_value());
+    assert_ne!(resuids.real.as_raw(), libc::uid_t::MAX);
+    assert_ne!(resuids.effective.as_raw(), libc::uid_t::MAX);
+    assert_ne!(resuids.saved.as_raw(), libc::uid_t::MAX);
 }
 
 #[cfg(any(
@@ -709,9 +709,9 @@ fn test_getresuid() {
 #[test]
 fn test_getresgid() {
     let resgids = getresgid().unwrap();
-    assert!(resgids.real.as_raw() != libc::gid_t::max_value());
-    assert!(resgids.effective.as_raw() != libc::gid_t::max_value());
-    assert!(resgids.saved.as_raw() != libc::gid_t::max_value());
+    assert_ne!(resgids.real.as_raw(), libc::gid_t::MAX);
+    assert_ne!(resgids.effective.as_raw(), libc::gid_t::MAX);
+    assert_ne!(resgids.saved.as_raw(), libc::gid_t::MAX);
 }
 
 // Test that we can create a pair of pipes.  No need to verify that they pass
@@ -1335,7 +1335,7 @@ fn test_faccessat_not_existing() {
             Some(dirfd),
             not_exist_file,
             AccessFlags::F_OK,
-            AtFlags::empty()
+            AtFlags::empty(),
         )
         .err()
         .unwrap(),
@@ -1354,7 +1354,7 @@ fn test_faccessat_none_file_exists() {
         None,
         &path,
         AccessFlags::R_OK | AccessFlags::W_OK,
-        AtFlags::empty()
+        AtFlags::empty(),
     )
     .is_ok());
 }
@@ -1372,7 +1372,7 @@ fn test_faccessat_file_exists() {
         Some(dirfd),
         &path,
         AccessFlags::R_OK | AccessFlags::W_OK,
-        AtFlags::empty()
+        AtFlags::empty(),
     )
     .is_ok());
 }