set RLIMIT_NOFILE soft limit to match the hard limit on mac

[NO NEW TESTS NEEDED]

Signed-off-by: Sam Peterson <samigknighted@gmail.com>

cmd/podman/early_init_darwin.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"syscall"
+)
+
+func setRLimitsNoFile() error {
+	var rLimitNoFile syscall.Rlimit
+	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimitNoFile); err != nil {
+		return fmt.Errorf("getting RLIMITS_NOFILE: %w", err)
+	}
+	err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &syscall.Rlimit{
+		Max: rLimitNoFile.Max,
+		Cur: rLimitNoFile.Max,
+	})
+	if err != nil {
+		return fmt.Errorf("setting new RLIMITS_NOFILE: %w", err)
+	}
+	return nil
+}
+
+func earlyInitHook() {
+	if err := setRLimitsNoFile(); err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to set RLIMITS_NOFILE: %s\n", err.Error())
+	}
+}

cmd/podman/early_init_unsupported.go

@@ -1,5 +1,5 @@
-//go:build !linux
+//go:build !linux && !darwin
-// +build !linux
+// +build !linux,!darwin
 
 package main