AdGuardHome/internal/aghos/os_linux.go

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//go:build linux
// +build linux
package aghos
import (
"io"
"os"
"syscall"
"github.com/AdguardTeam/golibs/stringutil"
)
func setRlimit(val uint64) (err error) {
var rlim syscall.Rlimit
rlim.Max = val
rlim.Cur = val
return syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlim)
}
func haveAdminRights() (bool, error) {
// The error is nil because the platform-independent function signature
// requires returning an error.
return os.Getuid() == 0, nil
}
func isOpenWrt() (ok bool) {
var err error
ok, err = FileWalker(func(r io.Reader) (_ []string, cont bool, err error) {
const osNameData = "openwrt"
// This use of ReadAll is now safe, because FileWalker's Walk()
// have limited r.
var data []byte
data, err = io.ReadAll(r)
if err != nil {
return nil, false, err
}
return nil, !stringutil.ContainsFold(string(data), osNameData), nil
}).Walk("/etc/*release*")
return err == nil && ok
}