Revert "commands: Remove the rlimit tweaking on macOS"

This reverts commit bcd32f1086c8c604fb22a7496924e41cc46b1605.

See #3582

1 files changed, 85 insertions, 0 deletions

diff --git a/commands/limit_darwin.go b/commands/limit_darwin.go
new file mode 100644
index 000000000..b9d977737
--- /dev/null
+++ b/commands/limit_darwin.go
@@ -0,0 +1,85 @@
+// Copyright 2015 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Copyright 2015 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package commands
+
+import (
+	"syscall"
+
+	"github.com/spf13/cobra"
+	jww "github.com/spf13/jwalterweatherman"
+)
+
+func init() {
+	checkCmd.AddCommand(limit)
+}
+
+var limit = &cobra.Command{
+	Use:   "ulimit",
+	Short: "Check system ulimit settings",
+	Long: `Hugo will inspect the current ulimit settings on the system.
+This is primarily to ensure that Hugo can watch enough files on some OSs`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		var rLimit syscall.Rlimit
+		err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
+		if err != nil {
+			return newSystemError("Error Getting Rlimit ", err)
+		}
+
+		jww.FEEDBACK.Println("Current rLimit:", rLimit)
+
+		jww.FEEDBACK.Println("Attempting to increase limit")
+		rLimit.Max = 999999
+		rLimit.Cur = 999999
+		err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
+		if err != nil {
+			return newSystemError("Error Setting rLimit ", err)
+		}
+		err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
+		if err != nil {
+			return newSystemError("Error Getting rLimit ", err)
+		}
+		jww.FEEDBACK.Println("rLimit after change:", rLimit)
+
+		return nil
+	},
+}
+
+func tweakLimit() {
+	var rLimit syscall.Rlimit
+	err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
+	if err != nil {
+		jww.ERROR.Println("Unable to obtain rLimit", err)
+	}
+	if rLimit.Cur < rLimit.Max {
+		rLimit.Max = 999999
+		rLimit.Cur = 999999
+		err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
+		if err != nil {
+			jww.ERROR.Println("Unable to increase number of open files limit", err)
+		}
+	}
+}