Increase nix dependency lower bound to 0.27.1

Signed-off-by: mulhern <[email protected]>

Cargo.toml

@@ -154,7 +154,8 @@ version = "0.4.14"
 optional = true
 
 [dependencies.nix]
-version = "0.26.0"
+version = "0.27.1"
+features = ["fs", "ioctl", "mount", "poll", "process", "sched", "socket"]
 optional = true
 
 [dependencies.pretty-hex]

src/engine/shared.rs

@@ -6,7 +6,8 @@ use std::{
     collections::{hash_map::RandomState, HashMap, HashSet},
     fs::File,
     io::Read,
-    os::unix::io::{AsRawFd, FromRawFd, RawFd},
+    os::fd::AsFd,
+    os::unix::io::{FromRawFd, RawFd},
     path::{Path, PathBuf},
 };
 
@@ -118,7 +119,7 @@ pub fn set_key_shared(key_fd: RawFd, memory: &mut [u8]) -> StratisResult<usize>
     let bytes_read = key_file.read(memory)?;
 
     if bytes_read == MAX_STRATIS_PASS_SIZE {
-        let mut pollers = [PollFd::new(key_file.as_raw_fd(), PollFlags::POLLIN)];
+        let mut pollers = [PollFd::new(&key_file.as_fd(), PollFlags::POLLIN)];
         let num_events = poll(&mut pollers, 0)?;
         if num_events > 0 {
             return Err(StratisError::Msg(format!(

src/engine/strat_engine/tests/loopbacked.rs

@@ -6,7 +6,7 @@ use std::{
     env,
     fs::{File, OpenOptions},
     mem::forget,
-    os::unix::io::AsRawFd,
+    os::fd::AsFd,
     panic,
     path::{Path, PathBuf},
     sync::Once,
@@ -59,7 +59,7 @@ impl LoopTestDev {
             .unwrap();
 
         nix::unistd::ftruncate(
-            f.as_raw_fd(),
+            f.as_fd(),
             convert_test!(*size.bytes(), u128, nix::libc::off_t),
         )
         .unwrap();

src/jsonrpc/server/server.rs

@@ -438,10 +438,11 @@ impl StratisUnixListener {
             SockFlag::empty(),
             None,
         )?;
-        let flags = OFlag::from_bits(fcntl(fd, FcntlArg::F_GETFL)?).ok_or_else(|| {
-            StratisError::Msg("Unrecognized flag types returned from fcntl".to_string())
-        })?;
-        fcntl(fd, FcntlArg::F_SETFL(flags | OFlag::O_NONBLOCK))?;
+        let flags =
+            OFlag::from_bits(fcntl(fd.as_raw_fd(), FcntlArg::F_GETFL)?).ok_or_else(|| {
+                StratisError::Msg("Unrecognized flag types returned from fcntl".to_string())
+            })?;
+        fcntl(fd.as_raw_fd(), FcntlArg::F_SETFL(flags | OFlag::O_NONBLOCK))?;
         bind(fd, &UnixAddr::new(path.as_ref())?)?;
         listen(fd, 0)?;
         Ok(StratisUnixListener {