Check all tests in CI

Travis didn't compile check tests on platforms that couldn't run tests
in CI, so they bitrotted.  Let's see how bad they are.

Most annoyingly, 32-bit Android defines mode_t as 16 bits, but
stat.st_mode as 32-bits.

6 files changed, 70 insertions, 61 deletions

diff --git a/.cirrus.yml b/.cirrus.yml
index f598e2e6..381fb629 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -22,6 +22,7 @@ task:
     - cargo test --target i686-unknown-freebsd
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
+# Test OSX and iOS in a full VM
 task:
   matrix:
     - name: OSX x86_64
@@ -162,14 +163,12 @@ task:
     - name: Linux x32
       env:
         TARGET: x86_64-unknown-linux-gnux32
-        CHECK_TESTS: true
     - name: NetBSD x86_64
       env:
         TARGET: x86_64-unknown-netbsd
     - name: Fuchsia x86_64
       env:
         TARGET: x86_64-fuchsia
-        CHECK_TESTS: true
   container:
     image: rust:1.40
   setup_script:
@@ -177,9 +176,7 @@ task:
   script:
     - cargo +$TOOLCHAIN check --target $TARGET
     - cargo +$TOOLCHAIN check --target $TARGET --release
-    - 'if [ "$CHECK_TESTS" == true ]; then cargo +$TOOLCHAIN check --all-targets --target $TARGET; fi'
-    # TODO: check the tests, too.  The old Travis CI setup didn't do that, so
-    # they don't build on all platforms.
+    - cargo +$TOOLCHAIN check --all-targets --target $TARGET
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
 # illumos toolchain isn't available via rustup until 1.50
diff --git a/test/sys/mod.rs b/test/sys/mod.rs
index 14b03784..4f5316ff 100644
--- a/test/sys/mod.rs
+++ b/test/sys/mod.rs
@@ -41,5 +41,5 @@ mod test_pthread;
           target_os = "netbsd",
           target_os = "openbsd"))]
 mod test_ptrace;
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(target_os = "linux")]
 mod test_timerfd;
diff --git a/test/sys/test_socket.rs b/test/sys/test_socket.rs
index 2b89a453..43f9b5a3 100644
--- a/test/sys/test_socket.rs
+++ b/test/sys/test_socket.rs
@@ -757,6 +757,7 @@ pub fn test_af_alg_aead() {
         target_os = "netbsd"))]
 #[test]
 pub fn test_sendmsg_ipv4packetinfo() {
+    use cfg_if::cfg_if;
     use nix::sys::uio::IoVec;
     use nix::sys::socket::{socket, sendmsg, bind,
                            AddressFamily, SockType, SockFlag, SockAddr,
@@ -778,11 +779,21 @@ pub fn test_sendmsg_ipv4packetinfo() {
     let iov = [IoVec::from_slice(&slice)];
 
     if let InetAddr::V4(sin) = inet_addr {
-        let pi = libc::in_pktinfo {
-            ipi_ifindex: 0, /* Unspecified interface */
-            ipi_addr: libc::in_addr { s_addr: 0 },
-            ipi_spec_dst: sin.sin_addr,
-        };
+        cfg_if! {
+            if #[cfg(target_os = "netbsd")] {
+                drop(sin);
+                let pi = libc::in_pktinfo {
+                    ipi_ifindex: 0, /* Unspecified interface */
+                    ipi_addr: libc::in_addr { s_addr: 0 },
+                };
+            } else {
+                let pi = libc::in_pktinfo {
+                    ipi_ifindex: 0, /* Unspecified interface */
+                    ipi_addr: libc::in_addr { s_addr: 0 },
+                    ipi_spec_dst: sin.sin_addr,
+                };
+            }
+        }
 
         let cmsg = [ControlMessage::Ipv4PacketInfo(&pi)];
 
@@ -1472,13 +1483,13 @@ pub fn test_recv_ipv6pktinfo() {
             Some(ControlMessageOwned::Ipv6PacketInfo(pktinfo)) => {
                 let i = if_nametoindex(lo_name.as_bytes()).expect("if_nametoindex");
                 assert_eq!(
-                    pktinfo.ipi6_ifindex,
+                    pktinfo.ipi6_ifindex as libc::c_uint,
                     i,
                     "unexpected ifindex (expected {}, got {})",
                     i,
                     pktinfo.ipi6_ifindex
                 );
-            }
+            },
             _ => (),
         }
         assert!(cmsgs.next().is_none(), "unexpected additional control msg");
diff --git a/test/test_fcntl.rs b/test/test_fcntl.rs
index 5d1bafeb..48d46626 100644
--- a/test/test_fcntl.rs
+++ b/test/test_fcntl.rs
@@ -81,19 +81,18 @@ fn test_readlink() {
 
 #[cfg(any(target_os = "linux", target_os = "android"))]
 mod linux_android {
-    use std::fs::File;
     use std::io::prelude::*;
-    use std::io::{BufRead, BufReader, SeekFrom};
+    use std::io::SeekFrom;
     use std::os::unix::prelude::*;
-
     use libc::loff_t;
 
     use nix::fcntl::*;
-    use nix::sys::stat::fstat;
     use nix::sys::uio::IoVec;
     use nix::unistd::{close, pipe, read, write};
 
-    use tempfile::{tempfile, NamedTempFile};
+    use tempfile::tempfile;
+    #[cfg(any(target_os = "linux"))]
+    use tempfile::NamedTempFile;
 
     use crate::*;
 
@@ -206,6 +205,7 @@ mod linux_android {
         close(wr).unwrap();
     }
 
+    #[cfg(any(target_os = "linux"))]
     #[test]
     fn test_fallocate() {
         let tmp = NamedTempFile::new().unwrap();
@@ -224,17 +224,11 @@ mod linux_android {
     // they run under QEMU.
 
     #[test]
-    #[cfg(not(any(target_arch = "aarch64",
-                  target_arch = "arm",
-                  target_arch = "armv7",
-                  target_arch = "x86",
-                  target_arch = "mips",
-                  target_arch = "mips64",
-                  target_arch = "mips64el",
-                  target_arch = "powerpc64",
-                  target_arch = "powerpc64le",
-                  target_env = "musl")))]
+    #[cfg(all(target_os = "linux", not(target_env = "musl")))]
     fn test_ofd_write_lock() {
+        use nix::sys::stat::fstat;
+        use std::mem;
+
         let tmp = NamedTempFile::new().unwrap();
 
         let fd = tmp.as_raw_fd();
@@ -247,13 +241,14 @@ mod linux_android {
         }
         let inode = fstat(fd).expect("fstat failed").st_ino as usize;
 
-        let mut flock = libc::flock {
-            l_type: libc::F_WRLCK as libc::c_short,
-            l_whence: libc::SEEK_SET as libc::c_short,
-            l_start: 0,
-            l_len: 0,
-            l_pid: 0,
+        let mut flock: libc::flock = unsafe {
+            mem::zeroed()  // required for Linux/mips
         };
+        flock.l_type = libc::F_WRLCK as libc::c_short;
+        flock.l_whence = libc::SEEK_SET as libc::c_short;
+        flock.l_start = 0;
+        flock.l_len = 0;
+        flock.l_pid = 0;
         fcntl(fd, FcntlArg::F_OFD_SETLKW(&flock)).expect("write lock failed");
         assert_eq!(
             Some(("OFDLCK".to_string(), "WRITE".to_string())),
@@ -266,17 +261,11 @@ mod linux_android {
     }
 
     #[test]
-    #[cfg(not(any(target_arch = "aarch64",
-                  target_arch = "arm",
-                  target_arch = "armv7",
-                  target_arch = "x86",
-                  target_arch = "mips",
-                  target_arch = "mips64",
-                  target_arch = "mips64el",
-                  target_arch = "powerpc64",
-                  target_arch = "powerpc64le",
-                  target_env = "musl")))]
+    #[cfg(all(target_os = "linux", not(target_env = "musl")))]
     fn test_ofd_read_lock() {
+        use nix::sys::stat::fstat;
+        use std::mem;
+
         let tmp = NamedTempFile::new().unwrap();
 
         let fd = tmp.as_raw_fd();
@@ -289,13 +278,14 @@ mod linux_android {
         }
         let inode = fstat(fd).expect("fstat failed").st_ino as usize;
 
-        let mut flock = libc::flock {
-            l_type: libc::F_RDLCK as libc::c_short,
-            l_whence: libc::SEEK_SET as libc::c_short,
-            l_start: 0,
-            l_len: 0,
-            l_pid: 0,
+        let mut flock: libc::flock = unsafe {
+            mem::zeroed()  // required for Linux/mips
         };
+        flock.l_type = libc::F_RDLCK as libc::c_short;
+        flock.l_whence = libc::SEEK_SET as libc::c_short;
+        flock.l_start = 0;
+        flock.l_len = 0;
+        flock.l_pid = 0;
         fcntl(fd, FcntlArg::F_OFD_SETLKW(&flock)).expect("read lock failed");
         assert_eq!(
             Some(("OFDLCK".to_string(), "READ".to_string())),
@@ -307,7 +297,13 @@ mod linux_android {
         assert_eq!(None, lock_info(inode));
     }
 
+    #[cfg(all(target_os = "linux", not(target_env = "musl")))]
     fn lock_info(inode: usize) -> Option<(String, String)> {
+        use std::{
+            fs::File,
+            io::BufReader
+        };
+
         let file = File::open("/proc/locks").expect("open /proc/locks failed");
         let buf = BufReader::new(file);
 
diff --git a/test/test_stat.rs b/test/test_stat.rs
index 0b946668..98112d61 100644
--- a/test/test_stat.rs
+++ b/test/test_stat.rs
@@ -10,7 +10,9 @@ use std::time::{Duration, UNIX_EPOCH};
 use std::path::Path;
 
 #[cfg(not(any(target_os = "netbsd", target_os = "redox")))]
-use libc::{S_IFMT, S_IFLNK, mode_t};
+use libc::{S_IFMT, S_IFLNK};
+#[cfg(not(target_os = "redox"))]
+use libc::mode_t;
 
 #[cfg(not(target_os = "redox"))]
 use nix::{fcntl, Error};
@@ -69,6 +71,8 @@ fn assert_stat_results(stat_result: Result<FileStat>) {
 }
 
 #[cfg(not(any(target_os = "netbsd", target_os = "redox")))]
+// (Android's st_blocks is ulonglong which is always non-negative.)
+#[cfg_attr(target_os = "android", allow(unused_comparisons))]
 fn assert_lstat_results(stat_result: Result<FileStat>) {
     let stats = stat_result.expect("stat call failed");
     assert!(stats.st_dev > 0);      // must be positive integer, exact number machine dependent
@@ -86,7 +90,6 @@ fn assert_lstat_results(stat_result: Result<FileStat>) {
 
     // st_blocks depends on whether the machine's file system uses fast
     // or slow symlinks, so just make sure it's not negative
-    // (Android's st_blocks is ulonglong which is always non-negative.)
     assert!(stats.st_blocks >= 0);
 }
 
@@ -159,14 +162,14 @@ fn test_fchmod() {
     fchmod(file.as_raw_fd(), mode1).unwrap();
 
     let file_stat1 = stat(&filename).unwrap();
-    assert_eq!(file_stat1.st_mode & 0o7777, mode1.bits());
+    assert_eq!(file_stat1.st_mode as mode_t & 0o7777, mode1.bits());
 
     let mut mode2 = Mode::empty();
     mode2.insert(Mode::S_IROTH);
     fchmod(file.as_raw_fd(), mode2).unwrap();
 
     let file_stat2 = stat(&filename).unwrap();
-    assert_eq!(file_stat2.st_mode & 0o7777, mode2.bits());
+    assert_eq!(file_stat2.st_mode as mode_t & 0o7777, mode2.bits());
 }
 
 #[test]
@@ -186,7 +189,7 @@ fn test_fchmodat() {
     fchmodat(Some(dirfd), filename, mode1, FchmodatFlags::FollowSymlink).unwrap();
 
     let file_stat1 = stat(&fullpath).unwrap();
-    assert_eq!(file_stat1.st_mode & 0o7777, mode1.bits());
+    assert_eq!(file_stat1.st_mode as mode_t & 0o7777, mode1.bits());
 
     chdir(tempdir.path()).unwrap();
 
@@ -195,7 +198,7 @@ fn test_fchmodat() {
     fchmodat(None, filename, mode2, FchmodatFlags::FollowSymlink).unwrap();
 
     let file_stat2 = stat(&fullpath).unwrap();
-    assert_eq!(file_stat2.st_mode & 0o7777, mode2.bits());
+    assert_eq!(file_stat2.st_mode as mode_t & 0o7777, mode2.bits());
 }
 
 /// Asserts that the atime and mtime in a file's metadata match expected values.
diff --git a/test/test_unistd.rs b/test/test_unistd.rs
index 9f710168..4acfff37 100644
--- a/test/test_unistd.rs
+++ b/test/test_unistd.rs
@@ -23,7 +23,7 @@ use std::os::unix::prelude::*;
 #[cfg(not(target_os = "redox"))]
 use std::path::Path;
 use tempfile::{tempdir, tempfile};
-use libc::{_exit, off_t};
+use libc::{_exit, mode_t, off_t};
 
 use crate::*;
 
@@ -102,7 +102,7 @@ fn test_mkfifo() {
     mkfifo(&mkfifo_fifo, Mode::S_IRUSR).unwrap();
 
     let stats = stat::stat(&mkfifo_fifo).unwrap();
-    let typ = stat::SFlag::from_bits_truncate(stats.st_mode);
+    let typ = stat::SFlag::from_bits_truncate(stats.st_mode as mode_t);
     assert!(typ == SFlag::S_IFIFO);
 }
 
@@ -629,10 +629,10 @@ fn test_sysconf_unsupported() {
 #[test]
 fn test_pipe() {
     let (fd0, fd1) = pipe().unwrap();
-    let m0 = stat::SFlag::from_bits_truncate(stat::fstat(fd0).unwrap().st_mode);
+    let m0 = stat::SFlag::from_bits_truncate(stat::fstat(fd0).unwrap().st_mode as mode_t);
     // S_IFIFO means it's a pipe
     assert_eq!(m0, SFlag::S_IFIFO);
-    let m1 = stat::SFlag::from_bits_truncate(stat::fstat(fd1).unwrap().st_mode);
+    let m1 = stat::SFlag::from_bits_truncate(stat::fstat(fd1).unwrap().st_mode as mode_t);
     assert_eq!(m1, SFlag::S_IFIFO);
 }
 
@@ -926,7 +926,9 @@ fn test_linkat_follow_symlink() {
     let newfilestat = stat::stat(&newfilepath).unwrap();
 
     // Check the file type of the new link
-    assert!((stat::SFlag::from_bits_truncate(newfilestat.st_mode) & SFlag::S_IFMT) ==  SFlag::S_IFREG);
+    assert_eq!((stat::SFlag::from_bits_truncate(newfilestat.st_mode as mode_t) & SFlag::S_IFMT),
+        SFlag::S_IFREG
+    );
 
     // Check the number of hard links to the original file
     assert_eq!(newfilestat.st_nlink, 2);