78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
// Package aghos contains utilities for functions requiring system calls and
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// other OS-specific APIs. OS-specific network handling should go to aghnet
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// instead.
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package aghos
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import (
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"fmt"
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"os/exec"
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"runtime"
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"syscall"
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)
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// UnsupportedError is returned by functions and methods when a particular
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// operation Op cannot be performed on the current OS.
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type UnsupportedError struct {
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Op string
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OS string
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}
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// Error implements the error interface for *UnsupportedError.
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func (err *UnsupportedError) Error() (msg string) {
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return fmt.Sprintf("%s is unsupported on %s", err.Op, err.OS)
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}
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// Unsupported is a helper that returns an *UnsupportedError with the Op field
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// set to op and the OS field set to the current OS.
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func Unsupported(op string) (err error) {
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return &UnsupportedError{
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Op: op,
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OS: runtime.GOOS,
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}
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}
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// CanBindPrivilegedPorts checks if current process can bind to privileged
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// ports.
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func CanBindPrivilegedPorts() (can bool, err error) {
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return canBindPrivilegedPorts()
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}
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// SetRlimit sets user-specified limit of how many fd's we can use.
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//
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// See https://github.com/AdguardTeam/AdGuardHome/internal/issues/659.
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func SetRlimit(val uint64) (err error) {
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return setRlimit(val)
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}
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// HaveAdminRights checks if the current user has root (administrator) rights.
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func HaveAdminRights() (bool, error) {
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return haveAdminRights()
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}
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// SendProcessSignal sends signal to a process.
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func SendProcessSignal(pid int, sig syscall.Signal) error {
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return sendProcessSignal(pid, sig)
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}
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// MaxCmdOutputSize is the maximum length of performed shell command output.
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const MaxCmdOutputSize = 2 * 1024
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// RunCommand runs shell command.
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func RunCommand(command string, arguments ...string) (int, string, error) {
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cmd := exec.Command(command, arguments...)
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out, err := cmd.Output()
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if len(out) > MaxCmdOutputSize {
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out = out[:MaxCmdOutputSize]
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}
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if err != nil {
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return 1, "", fmt.Errorf("exec.Command(%s) failed: %v: %s", command, err, string(out))
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}
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return cmd.ProcessState.ExitCode(), string(out), nil
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}
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// IsOpenWrt returns true if host OS is OpenWrt.
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func IsOpenWrt() (ok bool) {
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return isOpenWrt()
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}
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