feature-gate most Nix functions

Using features reduces build time and size for consumer crates.  By
default all features are enabled.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/sys/resource.rs b/src/sys/resource.rs
index f3bfb671..80473e58 100644
--- a/src/sys/resource.rs
+++ b/src/sys/resource.rs
@@ -54,6 +54,7 @@ libc_enum! {
                     target_os = "netbsd",
                     target_os = "openbsd"
         )))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// The maximum amount (in bytes) of virtual memory the process is
         /// allowed to map.
         RLIMIT_AS,
@@ -72,69 +73,83 @@ libc_enum! {
         RLIMIT_STACK,
 
         #[cfg(target_os = "freebsd")]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// The maximum number of kqueues this user id is allowed to create.
         RLIMIT_KQUEUES,
 
         #[cfg(any(target_os = "android", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// A limit on the combined number of flock locks and fcntl leases that
         /// this process may establish.
         RLIMIT_LOCKS,
 
         #[cfg(any(target_os = "android", target_os = "freebsd", target_os = "openbsd", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// The maximum size (in bytes) which a process may lock into memory
         /// using the mlock(2) system call.
         RLIMIT_MEMLOCK,
 
         #[cfg(any(target_os = "android", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// A limit on the number of bytes that can be allocated for POSIX
         /// message queues  for  the  real  user  ID  of  the  calling process.
         RLIMIT_MSGQUEUE,
 
         #[cfg(any(target_os = "android", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// A ceiling to which the process's nice value can be raised using
         /// setpriority or nice.
         RLIMIT_NICE,
 
         #[cfg(any(target_os = "android", target_os = "freebsd", target_os = "openbsd", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// The maximum number of simultaneous processes for this user id.
         RLIMIT_NPROC,
 
         #[cfg(target_os = "freebsd")]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// The maximum number of pseudo-terminals this user id is allowed to
         /// create.
         RLIMIT_NPTS,
 
         #[cfg(any(target_os = "android", target_os = "freebsd", target_os = "openbsd", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// When there is memory pressure and swap is available, prioritize
         /// eviction of a process' resident pages beyond this amount (in bytes).
         RLIMIT_RSS,
 
         #[cfg(any(target_os = "android", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// A ceiling on the real-time priority that may be set for this process
         /// using sched_setscheduler and  sched_set‐ param.
         RLIMIT_RTPRIO,
 
         #[cfg(any(target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// A limit (in microseconds) on the amount of CPU time that a process
         /// scheduled under a real-time scheduling policy may con‐ sume without
         /// making a blocking system call.
         RLIMIT_RTTIME,
 
         #[cfg(any(target_os = "android", target_os = "linux"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// A limit on the number of signals that may be queued for the real
         /// user ID of the  calling  process.
         RLIMIT_SIGPENDING,
 
         #[cfg(any(target_os = "freebsd", target_os = "dragonfly"))]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// The maximum size (in bytes) of socket buffer usage for this user.
         RLIMIT_SBSIZE,
 
         #[cfg(target_os = "freebsd")]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// The maximum size (in bytes) of the swap space that may be reserved
         /// or used by all of this user id's processes.
         RLIMIT_SWAP,
 
         #[cfg(target_os = "freebsd")]
+        #[cfg_attr(docsrs, doc(cfg(all())))]
         /// An alias for RLIMIT_AS.
         RLIMIT_VMEM,
     }