go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/common/system/filesystem/filesystem_statvfs.go (about)

     1  // Copyright 2023 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build netbsd || solaris || illumos
    16  // +build netbsd solaris illumos
    17  
    18  package filesystem
    19  
    20  import (
    21  	"os"
    22  	"syscall"
    23  
    24  	"golang.org/x/sys/unix"
    25  )
    26  
    27  func umask(mask int) int {
    28  	return syscall.Umask(mask)
    29  }
    30  
    31  func addReadMode(mode os.FileMode) os.FileMode {
    32  	return mode | 0444
    33  }
    34  
    35  func getFreeSpace(path string) (uint64, error) {
    36  	var statfs unix.Statvfs_t
    37  	if err := unix.Statvfs(path, &statfs); err != nil {
    38  		return 0, err
    39  	}
    40  	return uint64(statfs.Bavail) * uint64(statfs.Bsize), nil
    41  }