Factor some common `io::Error` constants

14 files changed, 26 insertions, 86 deletions

diff --git a/library/std/src/sys/pal/hermit/net.rs b/library/std/src/sys/pal/hermit/net.rs
index 1c53796f5d4..23ac71cb9f2 100644
--- a/library/std/src/sys/pal/hermit/net.rs
+++ b/library/std/src/sys/pal/hermit/net.rs
@@ -80,10 +80,7 @@ impl Socket {
         let mut pollfd = netc::pollfd { fd: self.as_raw_fd(), events: netc::POLLOUT, revents: 0 };
 
         if timeout.as_secs() == 0 && timeout.subsec_nanos() == 0 {
-            return Err(io::const_io_error!(
-                io::ErrorKind::InvalidInput,
-                "cannot set a 0 duration timeout",
-            ));
+            return Err(io::Error::ZERO_TIMEOUT);
         }
 
         let start = Instant::now();
@@ -245,10 +242,7 @@ impl Socket {
         let timeout = match dur {
             Some(dur) => {
                 if dur.as_secs() == 0 && dur.subsec_nanos() == 0 {
-                    return Err(io::const_io_error!(
-                        io::ErrorKind::InvalidInput,
-                        "cannot set a 0 duration timeout",
-                    ));
+                    return Err(io::Error::ZERO_TIMEOUT);
                 }
 
                 let secs = if dur.as_secs() > netc::time_t::MAX as u64 {
diff --git a/library/std/src/sys/pal/sgx/net.rs b/library/std/src/sys/pal/sgx/net.rs
index edb28e2300f..68a2d5eded2 100644
--- a/library/std/src/sys/pal/sgx/net.rs
+++ b/library/std/src/sys/pal/sgx/net.rs
@@ -97,10 +97,7 @@ impl TcpStream {
 
     pub fn connect_timeout(addr: &SocketAddr, dur: Duration) -> io::Result<TcpStream> {
         if dur == Duration::default() {
-            return Err(io::const_io_error!(
-                io::ErrorKind::InvalidInput,
-                "cannot set a 0 duration timeout",
-            ));
+            return Err(io::Error::ZERO_TIMEOUT);
         }
         Self::connect(Ok(addr)) // FIXME: ignoring timeout
     }
@@ -108,10 +105,7 @@ impl TcpStream {
     pub fn set_read_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
         match dur {
             Some(dur) if dur == Duration::default() => {
-                return Err(io::const_io_error!(
-                    io::ErrorKind::InvalidInput,
-                    "cannot set a 0 duration timeout",
-                ));
+                return Err(io::Error::ZERO_TIMEOUT);
             }
             _ => sgx_ineffective(()),
         }
@@ -120,10 +114,7 @@ impl TcpStream {
     pub fn set_write_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
         match dur {
             Some(dur) if dur == Duration::default() => {
-                return Err(io::const_io_error!(
-                    io::ErrorKind::InvalidInput,
-                    "cannot set a 0 duration timeout",
-                ));
+                return Err(io::Error::ZERO_TIMEOUT);
             }
             _ => sgx_ineffective(()),
         }
diff --git a/library/std/src/sys/pal/solid/mod.rs b/library/std/src/sys/pal/solid/mod.rs
index 109ee1a0ab6..3f6ff37903a 100644
--- a/library/std/src/sys/pal/solid/mod.rs
+++ b/library/std/src/sys/pal/solid/mod.rs
@@ -50,10 +50,7 @@ pub fn unsupported<T>() -> crate::io::Result<T> {
 }
 
 pub fn unsupported_err() -> crate::io::Error {
-    crate::io::const_io_error!(
-        crate::io::ErrorKind::Unsupported,
-        "operation not supported on this platform",
-    )
+    crate::io::Error::UNSUPPORTED_PLATFORM
 }
 
 #[inline]
diff --git a/library/std/src/sys/pal/solid/net.rs b/library/std/src/sys/pal/solid/net.rs
index 6ea874e509e..5bd339849e9 100644
--- a/library/std/src/sys/pal/solid/net.rs
+++ b/library/std/src/sys/pal/solid/net.rs
@@ -154,10 +154,7 @@ impl Socket {
         }
 
         if timeout.as_secs() == 0 && timeout.subsec_nanos() == 0 {
-            return Err(io::const_io_error!(
-                io::ErrorKind::InvalidInput,
-                "cannot set a 0 duration timeout",
-            ));
+            return Err(io::Error::ZERO_TIMEOUT);
         }
 
         let mut timeout =
@@ -306,10 +303,7 @@ impl Socket {
         let timeout = match dur {
             Some(dur) => {
                 if dur.as_secs() == 0 && dur.subsec_nanos() == 0 {
-                    return Err(io::const_io_error!(
-                        io::ErrorKind::InvalidInput,
-                        "cannot set a 0 duration timeout",
-                    ));
+                    return Err(io::Error::ZERO_TIMEOUT);
                 }
 
                 let secs = if dur.as_secs() > netc::c_long::MAX as u64 {
diff --git a/library/std/src/sys/pal/teeos/thread.rs b/library/std/src/sys/pal/teeos/thread.rs
index ae2f58ca08e..f4723b2ea46 100644
--- a/library/std/src/sys/pal/teeos/thread.rs
+++ b/library/std/src/sys/pal/teeos/thread.rs
@@ -141,10 +141,7 @@ impl Drop for Thread {
 // Note: Both `sched_getaffinity` and `sysconf` are available but not functional on
 // teeos, so this function always returns an Error!
 pub fn available_parallelism() -> io::Result<NonZero<usize>> {
-    Err(io::Error::new(
-        io::ErrorKind::NotFound,
-        "The number of hardware threads is not known for the target platform",
-    ))
+    Err(io::Error::UNKNOWN_THREAD_COUNT)
 }
 
 fn min_stack_size(_: *const libc::pthread_attr_t) -> usize {
diff --git a/library/std/src/sys/pal/unix/mod.rs b/library/std/src/sys/pal/unix/mod.rs
index 4ae76518c4f..3ef43a923a3 100644
--- a/library/std/src/sys/pal/unix/mod.rs
+++ b/library/std/src/sys/pal/unix/mod.rs
@@ -433,6 +433,6 @@ mod unsupported {
     }
 
     pub fn unsupported_err() -> io::Error {
-        io::const_io_error!(io::ErrorKind::Unsupported, "operation not supported on this platform",)
+        io::Error::UNSUPPORTED_PLATFORM
     }
 }
diff --git a/library/std/src/sys/pal/unix/net.rs b/library/std/src/sys/pal/unix/net.rs
index 9a0a1b18aee..7237989c905 100644
--- a/library/std/src/sys/pal/unix/net.rs
+++ b/library/std/src/sys/pal/unix/net.rs
@@ -175,10 +175,7 @@ impl Socket {
         let mut pollfd = libc::pollfd { fd: self.as_raw_fd(), events: libc::POLLOUT, revents: 0 };
 
         if timeout.as_secs() == 0 && timeout.subsec_nanos() == 0 {
-            return Err(io::const_io_error!(
-                io::ErrorKind::InvalidInput,
-                "cannot set a 0 duration timeout",
-            ));
+            return Err(io::Error::ZERO_TIMEOUT);
         }
 
         let start = Instant::now();
@@ -360,10 +357,7 @@ impl Socket {
         let timeout = match dur {
             Some(dur) => {
                 if dur.as_secs() == 0 && dur.subsec_nanos() == 0 {
-                    return Err(io::const_io_error!(
-                        io::ErrorKind::InvalidInput,
-                        "cannot set a 0 duration timeout",
-                    ));
+                    return Err(io::Error::ZERO_TIMEOUT);
                 }
 
                 let secs = if dur.as_secs() > libc::time_t::MAX as u64 {
diff --git a/library/std/src/sys/pal/unix/thread.rs b/library/std/src/sys/pal/unix/thread.rs
index f56e64c3505..5eb71f1f5ce 100644
--- a/library/std/src/sys/pal/unix/thread.rs
+++ b/library/std/src/sys/pal/unix/thread.rs
@@ -356,7 +356,7 @@ pub fn available_parallelism() -> io::Result<NonZero<usize>> {
             }
             match unsafe { libc::sysconf(libc::_SC_NPROCESSORS_ONLN) } {
                 -1 => Err(io::Error::last_os_error()),
-                0 => Err(io::const_io_error!(io::ErrorKind::NotFound, "The number of hardware threads is not known for the target platform")),
+                0 => Err(io::Error::UNKNOWN_THREAD_COUNT),
                 cpus => {
                     let count = cpus as usize;
                     // Cover the unusual situation where we were able to get the quota but not the affinity mask
@@ -439,7 +439,7 @@ pub fn available_parallelism() -> io::Result<NonZero<usize>> {
                 if res == -1 {
                     return Err(io::Error::last_os_error());
                 } else if cpus == 0 {
-                    return Err(io::const_io_error!(io::ErrorKind::NotFound, "The number of hardware threads is not known for the target platform"));
+                    return Err(io::Error::UNKNOWN_THREAD_COUNT);
                 }
             }
 
@@ -452,13 +452,13 @@ pub fn available_parallelism() -> io::Result<NonZero<usize>> {
                 } else {
                     let cpus = (*_syspage_ptr).num_cpu;
                     NonZero::new(cpus as usize)
-                        .ok_or(io::const_io_error!(io::ErrorKind::NotFound, "The number of hardware threads is not known for the target platform"))
+                        .ok_or(io::Error::UNKNOWN_THREAD_COUNT)
                 }
             }
         } else if #[cfg(any(target_os = "solaris", target_os = "illumos"))] {
             let mut cpus = 0u32;
             if unsafe { libc::pset_info(libc::PS_MYID, core::ptr::null_mut(), &mut cpus, core::ptr::null_mut()) } != 0 {
-                return Err(io::const_io_error!(io::ErrorKind::NotFound, "The number of hardware threads is not known for the target platform"));
+                return Err(io::Error::UNKNOWN_THREAD_COUNT);
             }
             Ok(unsafe { NonZero::new_unchecked(cpus as usize) })
         } else if #[cfg(target_os = "haiku")] {
@@ -469,7 +469,7 @@ pub fn available_parallelism() -> io::Result<NonZero<usize>> {
                 let res = libc::get_system_info(&mut sinfo);
 
                 if res != libc::B_OK {
-                    return Err(io::const_io_error!(io::ErrorKind::NotFound, "The number of hardware threads is not known for the target platform"));
+                    return Err(io::Error::UNKNOWN_THREAD_COUNT);
                 }
 
                 Ok(NonZero::new_unchecked(sinfo.cpu_count as usize))
diff --git a/library/std/src/sys/pal/unsupported/common.rs b/library/std/src/sys/pal/unsupported/common.rs
index 4f44db610af..76f80291f0e 100644
--- a/library/std/src/sys/pal/unsupported/common.rs
+++ b/library/std/src/sys/pal/unsupported/common.rs
@@ -13,10 +13,7 @@ pub fn unsupported<T>() -> std_io::Result<T> {
 }
 
 pub fn unsupported_err() -> std_io::Error {
-    std_io::const_io_error!(
-        std_io::ErrorKind::Unsupported,
-        "operation not supported on this platform",
-    )
+    std_io::Error::UNSUPPORTED_PLATFORM
 }
 
 pub fn is_interrupted(_code: i32) -> bool {
diff --git a/library/std/src/sys/pal/windows/net.rs b/library/std/src/sys/pal/windows/net.rs
index 1e6169ea8ec..9e15b15a351 100644
--- a/library/std/src/sys/pal/windows/net.rs
+++ b/library/std/src/sys/pal/windows/net.rs
@@ -154,10 +154,7 @@ impl Socket {
         match result {
             Err(ref error) if error.kind() == io::ErrorKind::WouldBlock => {
                 if timeout.as_secs() == 0 && timeout.subsec_nanos() == 0 {
-                    return Err(io::const_io_error!(
-                        io::ErrorKind::InvalidInput,
-                        "cannot set a 0 duration timeout",
-                    ));
+                    return Err(io::Error::ZERO_TIMEOUT);
                 }
 
                 let mut timeout = c::timeval {
@@ -364,10 +361,7 @@ impl Socket {
             Some(dur) => {
                 let timeout = sys::dur2timeout(dur);
                 if timeout == 0 {
-                    return Err(io::const_io_error!(
-                        io::ErrorKind::InvalidInput,
-                        "cannot set a 0 duration timeout",
-                    ));
+                    return Err(io::Error::ZERO_TIMEOUT);
                 }
                 timeout
             }
diff --git a/library/std/src/sys/pal/windows/thread.rs b/library/std/src/sys/pal/windows/thread.rs
index 9b1c5b34bbf..34d90a3b4a0 100644
--- a/library/std/src/sys/pal/windows/thread.rs
+++ b/library/std/src/sys/pal/windows/thread.rs
@@ -116,10 +116,7 @@ pub fn available_parallelism() -> io::Result<NonZero<usize>> {
         sysinfo.dwNumberOfProcessors as usize
     };
     match res {
-        0 => Err(io::const_io_error!(
-            io::ErrorKind::NotFound,
-            "The number of hardware threads is not known for the target platform",
-        )),
+        0 => Err(io::Error::UNKNOWN_THREAD_COUNT),
         cpus => Ok(unsafe { NonZero::new_unchecked(cpus) }),
     }
 }
diff --git a/library/std/src/sys/pal/xous/net/tcpstream.rs b/library/std/src/sys/pal/xous/net/tcpstream.rs
index aebef02acda..0ad88110711 100644
--- a/library/std/src/sys/pal/xous/net/tcpstream.rs
+++ b/library/std/src/sys/pal/xous/net/tcpstream.rs
@@ -140,10 +140,7 @@ impl TcpStream {
     pub fn set_read_timeout(&self, timeout: Option<Duration>) -> io::Result<()> {
         if let Some(to) = timeout {
             if to.is_zero() {
-                return Err(io::const_io_error!(
-                    io::ErrorKind::InvalidInput,
-                    &"Zero is an invalid timeout",
-                ));
+                return Err(io::Error::ZERO_TIMEOUT);
             }
         }
         self.read_timeout.store(
@@ -156,10 +153,7 @@ impl TcpStream {
     pub fn set_write_timeout(&self, timeout: Option<Duration>) -> io::Result<()> {
         if let Some(to) = timeout {
             if to.is_zero() {
-                return Err(io::const_io_error!(
-                    io::ErrorKind::InvalidInput,
-                    &"Zero is an invalid timeout",
-                ));
+                return Err(io::Error::ZERO_TIMEOUT);
             }
         }
         self.write_timeout.store(
diff --git a/library/std/src/sys/pal/xous/net/udp.rs b/library/std/src/sys/pal/xous/net/udp.rs
index cafa5b3bde8..3d0522b25f3 100644
--- a/library/std/src/sys/pal/xous/net/udp.rs
+++ b/library/std/src/sys/pal/xous/net/udp.rs
@@ -331,10 +331,7 @@ impl UdpSocket {
     pub fn set_read_timeout(&self, timeout: Option<Duration>) -> io::Result<()> {
         if let Some(d) = timeout {
             if d.is_zero() {
-                return Err(io::const_io_error!(
-                    io::ErrorKind::InvalidInput,
-                    &"Zero duration is invalid"
-                ));
+                return Err(io::Error::ZERO_TIMEOUT);
             }
         }
         self.read_timeout
@@ -345,10 +342,7 @@ impl UdpSocket {
     pub fn set_write_timeout(&self, timeout: Option<Duration>) -> io::Result<()> {
         if let Some(d) = timeout {
             if d.is_zero() {
-                return Err(io::const_io_error!(
-                    io::ErrorKind::InvalidInput,
-                    &"Zero duration is invalid"
-                ));
+                return Err(io::Error::ZERO_TIMEOUT);
             }
         }
         self.write_timeout
diff --git a/library/std/src/sys/pal/zkvm/mod.rs b/library/std/src/sys/pal/zkvm/mod.rs
index 228a976dbab..62f0a2c7b1c 100644
--- a/library/std/src/sys/pal/zkvm/mod.rs
+++ b/library/std/src/sys/pal/zkvm/mod.rs
@@ -54,10 +54,7 @@ pub fn unsupported<T>() -> std_io::Result<T> {
 }
 
 pub fn unsupported_err() -> std_io::Error {
-    std_io::const_io_error!(
-        std_io::ErrorKind::Unsupported,
-        "operation not supported on this platform",
-    )
+    std_io::Error::UNSUPPORTED_PLATFORM
 }
 
 pub fn is_interrupted(_code: i32) -> bool {