diff --git a/lib/std/c.zig b/lib/std/c.zig
index 6d3818afcb..d9062a125d 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -1502,25 +1502,19 @@ pub extern "c" fn closedir(dp: *DIR) c_int;
 pub extern "c" fn telldir(dp: *DIR) c_long;
 pub extern "c" fn seekdir(dp: *DIR, loc: c_long) void;
 
-pub extern "c" fn clock_gettime(clk_id: c_int, tp: *c.timespec) c_int;
-pub extern "c" fn clock_getres(clk_id: c_int, tp: *c.timespec) c_int;
-pub extern "c" fn gettimeofday(noalias tv: ?*c.timeval, noalias tz: ?*c.timezone) c_int;
-pub extern "c" fn nanosleep(rqtp: *const c.timespec, rmtp: ?*c.timespec) c_int;
-
-pub extern "c" fn getrusage(who: c_int, usage: *c.rusage) c_int;
-
-pub extern "c" fn sched_yield() c_int;
-
-pub extern "c" fn sigaction(sig: c_int, noalias act: ?*const c.Sigaction, noalias oact: ?*c.Sigaction) c_int;
-pub extern "c" fn sigprocmask(how: c_int, noalias set: ?*const c.sigset_t, noalias oset: ?*c.sigset_t) c_int;
-pub extern "c" fn sigfillset(set: ?*c.sigset_t) void;
 pub extern "c" fn sigwait(set: ?*c.sigset_t, sig: ?*c_int) c_int;
 
-pub extern "c" fn socket(domain: c_uint, sock_type: c_uint, protocol: c_uint) c_int;
-
 pub extern "c" fn alarm(seconds: c_uint) c_uint;
 
-pub extern "c" fn msync(addr: *align(page_size) const anyopaque, len: usize, flags: c_int) c_int;
+pub const clock_getres = switch (native_os) {
+    .netbsd => private.__clock_getres50,
+    else => private.clock_getres,
+};
+
+pub const clock_gettime = switch (native_os) {
+    .netbsd => private.__clock_gettime50,
+    else => private.clock_gettime,
+};
 
 pub const fstat = switch (native_os) {
     .macos => switch (native_arch) {
@@ -1539,6 +1533,31 @@ pub const fstatat = switch (native_os) {
     else => private.fstatat,
 };
 
+pub const getdirentries = switch (native_os) {
+    .macos, .ios, .tvos, .watchos => private.__getdirentries64,
+    else => private.getdirentries,
+};
+
+pub const getrusage = switch (native_os) {
+    .netbsd => private.__getrusage50,
+    else => private.getrusage,
+};
+
+pub const gettimeofday = switch (native_os) {
+    .netbsd => private.__gettimeofday50,
+    else => private.gettimeofday,
+};
+
+pub const msync = switch (native_os) {
+    .netbsd => private.__msync13,
+    else => private.msync,
+};
+
+pub const nanosleep = switch (native_os) {
+    .netbsd => private.__nanosleep50,
+    else => private.nanosleep,
+};
+
 pub const readdir = switch (native_os) {
     .macos => switch (native_arch) {
         .x86_64 => private.@"readdir$INODE64",
@@ -1549,10 +1568,35 @@ pub const readdir = switch (native_os) {
 };
 
 pub const realpath = switch (native_os) {
-    .macos, .ios, .watchos, .tvos => private.@"realpath$DARWIN_EXTSN",
+    .macos, .ios, .tvos, .watchos => private.@"realpath$DARWIN_EXTSN",
     else => private.realpath,
 };
 
+pub const sched_yield = switch (native_os) {
+    .netbsd => private.__libc_thr_yield,
+    else => private.sched_yield,
+};
+
+pub const sigaction = switch (native_os) {
+    .netbsd => private.__sigaction14,
+    else => private.sigaction,
+};
+
+pub const sigfillset = switch (native_os) {
+    .netbsd => private.__sigfillset14,
+    else => private.sigfillset,
+};
+
+pub const sigprocmask = switch (native_os) {
+    .netbsd => private.__sigprocmask14,
+    else => private.sigprocmask,
+};
+
+pub const socket = switch (native_os) {
+    .netbsd => private.__socket30,
+    else => private.socket,
+};
+
 pub const stat = switch (native_os) {
     .macos => switch (native_arch) {
         .x86_64 => private.@"stat$INODE64",
@@ -1680,7 +1724,6 @@ pub extern "c" fn recvfrom(
 pub extern "c" fn recvmsg(sockfd: c.fd_t, msg: *c.msghdr, flags: u32) isize;
 
 pub extern "c" fn kill(pid: c.pid_t, sig: c_int) c_int;
-pub extern "c" fn getdirentries(fd: c.fd_t, buf_ptr: [*]u8, nbytes: usize, basep: *i64) isize;
 
 pub extern "c" fn setuid(uid: c.uid_t) c_int;
 pub extern "c" fn setgid(gid: c.gid_t) c_int;
@@ -1878,10 +1921,22 @@ else
     };
 
 const private = struct {
+    extern "c" fn clock_getres(clk_id: c_int, tp: *c.timespec) c_int;
+    extern "c" fn clock_gettime(clk_id: c_int, tp: *c.timespec) c_int;
     extern "c" fn fstat(fd: c.fd_t, buf: *c.Stat) c_int;
     extern "c" fn fstatat(dirfd: c.fd_t, path: [*:0]const u8, buf: *c.Stat, flag: u32) c_int;
+    extern "c" fn getdirentries(fd: c.fd_t, buf_ptr: [*]u8, nbytes: usize, basep: *i64) isize;
+    extern "c" fn getrusage(who: c_int, usage: *c.rusage) c_int;
+    extern "c" fn gettimeofday(noalias tv: ?*c.timeval, noalias tz: ?*c.timezone) c_int;
+    extern "c" fn msync(addr: *align(page_size) const anyopaque, len: usize, flags: c_int) c_int;
+    extern "c" fn nanosleep(rqtp: *const c.timespec, rmtp: ?*c.timespec) c_int;
     extern "c" fn readdir(dir: *c.DIR) ?*c.dirent;
     extern "c" fn realpath(noalias file_name: [*:0]const u8, noalias resolved_name: [*]u8) ?[*:0]u8;
+    extern "c" fn sched_yield() c_int;
+    extern "c" fn sigaction(sig: c_int, noalias act: ?*const c.Sigaction, noalias oact: ?*c.Sigaction) c_int;
+    extern "c" fn sigfillset(set: ?*c.sigset_t) void;
+    extern "c" fn sigprocmask(how: c_int, noalias set: ?*const c.sigset_t, noalias oset: ?*c.sigset_t) c_int;
+    extern "c" fn socket(domain: c_uint, sock_type: c_uint, protocol: c_uint) c_int;
     extern "c" fn stat(noalias path: [*:0]const u8, noalias buf: *c.Stat) c_int;
 
     /// macos modernized symbols.
@@ -1894,7 +1949,20 @@ const private = struct {
 
     /// macos modernized symbols.
     extern "c" fn @"realpath$DARWIN_EXTSN"(noalias file_name: [*:0]const u8, noalias resolved_name: [*]u8) ?[*:0]u8;
+    extern "c" fn __getdirentries64(fd: c.fd_t, buf_ptr: [*]u8, buf_len: usize, basep: *i64) isize;
 
     /// netbsd modernized symbols.
+    extern "c" fn __clock_getres50(clk_id: c_int, tp: *c.timespec) c_int;
+    extern "c" fn __clock_gettime50(clk_id: c_int, tp: *c.timespec) c_int;
     extern "c" fn __fstat50(fd: c.fd_t, buf: *c.Stat) c_int;
+    extern "c" fn __getrusage50(who: c_int, usage: *c.rusage) c_int;
+    extern "c" fn __gettimeofday50(noalias tv: ?*c.timeval, noalias tz: ?*c.timezone) c_int;
+    extern "c" fn __libc_thr_yield() c_int;
+    extern "c" fn __msync13(addr: *align(std.mem.page_size) const anyopaque, len: usize, flags: c_int) c_int;
+    extern "c" fn __nanosleep50(rqtp: *const c.timespec, rmtp: ?*c.timespec) c_int;
+    extern "c" fn __sigaction14(sig: c_int, noalias act: ?*const c.Sigaction, noalias oact: ?*c.Sigaction) c_int;
+    extern "c" fn __sigfillset14(set: ?*c.sigset_t) void;
+    extern "c" fn __sigprocmask14(how: c_int, noalias set: ?*const c.sigset_t, noalias oset: ?*c.sigset_t) c_int;
+    extern "c" fn __socket30(domain: c_uint, sock_type: c_uint, protocol: c_uint) c_int;
+    extern "c" fn __stat50(path: [*:0]const u8, buf: *c.Stat) c_int;
 };
diff --git a/lib/std/c/darwin.zig b/lib/std/c/darwin.zig
index a58ce6e2dd..8dd122c3ba 100644
--- a/lib/std/c/darwin.zig
+++ b/lib/std/c/darwin.zig
@@ -924,9 +924,6 @@ pub extern "c" fn os_unfair_lock_trylock(o: os_unfair_lock_t) bool;
 pub extern "c" fn os_unfair_lock_assert_owner(o: os_unfair_lock_t) void;
 pub extern "c" fn os_unfair_lock_assert_not_owner(o: os_unfair_lock_t) void;
 
-// XXX: close -> close$NOCANCEL
-// XXX: getdirentries -> _getdirentries64
-
 // See: https://opensource.apple.com/source/xnu/xnu-6153.141.1/bsd/sys/_types.h.auto.html
 // TODO: audit mode_t/pid_t, should likely be u16/i32
 pub const blkcnt_t = i64;
diff --git a/lib/std/c/netbsd.zig b/lib/std/c/netbsd.zig
index ae0cdf45d3..475fd55e22 100644
--- a/lib/std/c/netbsd.zig
+++ b/lib/std/c/netbsd.zig
@@ -18,47 +18,14 @@ pub extern "c" fn _lwp_self() lwpid_t;
 pub extern "c" fn pipe2(fds: *[2]fd_t, flags: std.c.O) c_int;
 pub extern "c" fn arc4random_buf(buf: [*]u8, len: usize) void;
 
-pub extern "c" fn __stat50(path: [*:0]const u8, buf: *Stat) c_int;
-pub const stat = __stat50;
-
-pub extern "c" fn __clock_gettime50(clk_id: c_int, tp: *timespec) c_int;
-pub const clock_gettime = __clock_gettime50;
-
-pub extern "c" fn __clock_getres50(clk_id: c_int, tp: *timespec) c_int;
-pub const clock_getres = __clock_getres50;
-
 pub extern "c" fn __getdents30(fd: c_int, buf_ptr: [*]u8, nbytes: usize) c_int;
 pub const getdents = __getdents30;
 
 pub extern "c" fn __sigaltstack14(ss: ?*stack_t, old_ss: ?*stack_t) c_int;
 pub const sigaltstack = __sigaltstack14;
 
-pub extern "c" fn __nanosleep50(rqtp: *const timespec, rmtp: ?*timespec) c_int;
-pub const nanosleep = __nanosleep50;
-
-pub extern "c" fn __sigaction14(sig: c_int, noalias act: ?*const Sigaction, noalias oact: ?*Sigaction) c_int;
-pub const sigaction = __sigaction14;
-
-pub extern "c" fn __sigprocmask14(how: c_int, noalias set: ?*const sigset_t, noalias oset: ?*sigset_t) c_int;
-pub const sigprocmask = __sigaction14;
-
-pub extern "c" fn __socket30(domain: c_uint, sock_type: c_uint, protocol: c_uint) c_int;
-pub const socket = __socket30;
-
-pub extern "c" fn __gettimeofday50(noalias tv: ?*timeval, noalias tz: ?*timezone) c_int;
-pub const gettimeofday = __gettimeofday50;
-
-pub extern "c" fn __getrusage50(who: c_int, usage: *rusage) c_int;
-pub const getrusage = __getrusage50;
-
-pub extern "c" fn __libc_thr_yield() c_int;
-pub const sched_yield = __libc_thr_yield;
-
 pub extern "c" fn posix_memalign(memptr: *?*anyopaque, alignment: usize, size: usize) c_int;
 
-pub extern "c" fn __msync13(addr: *align(std.mem.page_size) const anyopaque, len: usize, flags: c_int) c_int;
-pub const msync = __msync13;
-
 pub const pthread_spin_t = switch (builtin.cpu.arch) {
     .aarch64, .aarch64_be, .aarch64_32 => u8,
     .mips, .mipsel, .mips64, .mips64el => u32,
diff --git a/lib/std/fs/Dir.zig b/lib/std/fs/Dir.zig
index f82eb8cd47..11fbc13c41 100644
--- a/lib/std/fs/Dir.zig
+++ b/lib/std/fs/Dir.zig
@@ -49,7 +49,7 @@ pub const Iterator = switch (builtin.os.tag) {
                         posix.lseek_SET(self.dir.fd, 0) catch unreachable; // EBADF here likely means that the Dir was not opened with iteration permissions
                         self.first_iter = false;
                     }
-                    const rc = posix.system.__getdirentries64(
+                    const rc = posix.system.getdirentries(
                         self.dir.fd,
                         &self.buf,
                         self.buf.len,
@@ -161,10 +161,7 @@ pub const Iterator = switch (builtin.os.tag) {
                         posix.lseek_SET(self.dir.fd, 0) catch unreachable; // EBADF here likely means that the Dir was not opened with iteration permissions
                         self.first_iter = false;
                     }
-                    const rc = if (builtin.os.tag == .netbsd)
-                        posix.system.__getdents30(self.dir.fd, &self.buf, self.buf.len)
-                    else
-                        posix.system.getdents(self.dir.fd, &self.buf, self.buf.len);
+                    const rc = posix.system.getdents(self.dir.fd, &self.buf, self.buf.len);
                     switch (posix.errno(rc)) {
                         .SUCCESS => {},
                         .BADF => unreachable, // Dir is invalid or was opened without iteration ability