// GetATime return time of last access
func GetATime(path string) (time.Time, error) {
path = PATH.Clean(path)
atime, _, _, err := GetTimes(path)
return atime, err
}
// GetCTime return time of creation
func GetCTime(path string) (time.Time, error) {
path = PATH.Clean(path)
_, _, ctime, err := GetTimes(path)
return ctime, err
}
// GetMTime return time of modification
func GetMTime(path string) (time.Time, error) {
path = PATH.Clean(path)
_, mtime, _, err := GetTimes(path)
return mtime, err
}
// IsExist check if target is exist in fs or not
func IsExist(path string) bool {
if path == "" {
return false
}
path = PATH.Clean(path)
return syscall.Access(path, syscall.F_OK) == nil
}
// IsNonEmpty check if file is empty or not
func IsNonEmpty(path string) bool {
if path == "" {
return false
}
path = PATH.Clean(path)
return GetSize(path) != 0
}
// IsLink check if file is link or not
func IsLink(path string) bool {
path = PATH.Clean(path)
mode := getMode(path)
if mode == 0 {
return false
}
return mode&_IFMT == _IFLNK
}
// IsCharacterDevice check if target is character device or not
func IsCharacterDevice(path string) bool {
path = PATH.Clean(path)
mode := getMode(path)
if mode == 0 {
return false
}
return mode&_IFMT == _IFCHR
}
// IsBlockDevice check if target is block device or not
func IsBlockDevice(path string) bool {
path = PATH.Clean(path)
mode := getMode(path)
if mode == 0 {
return false
}
return mode&_IFMT == _IFBLK
}
// IsSocket check if target is socket or not
func IsSocket(path string) bool {
path = PATH.Clean(path)
mode := getMode(path)
if mode == 0 {
return false
}
return mode&_IFMT == _IFSOCK
}
// IsRegular check if target is regular file or not
func IsRegular(path string) bool {
path = PATH.Clean(path)
mode := getMode(path)
if mode == 0 {
return false
}
return mode&_IFMT == _IFREG
}
// ProperPath return first proper path from given slice
func ProperPath(props string, paths []string) string {
for _, path := range paths {
path = PATH.Clean(path)
if CheckPerms(props, path) {
return path
}
}
return ""
}
// GetOwner return object owner pid and gid
func GetOwner(path string) (int, int, error) {
if path == "" {
return -1, -1, errors.New("Path is empty")
}
path = PATH.Clean(path)
var stat = &syscall.Stat_t{}
err := syscall.Stat(path, stat)
if err != nil {
return -1, -1, err
}
return int(stat.Uid), int(stat.Gid), nil
}
// GetSize return file size in bytes
func GetSize(path string) int64 {
if path == "" {
return 0
}
path = PATH.Clean(path)
var stat = &syscall.Stat_t{}
err := syscall.Stat(path, stat)
if err != nil {
return 0
}
return stat.Size
}
// GetTimestamps return time of access, modification and creation at once as linux timestamp
func GetTimestamps(path string) (int64, int64, int64, error) {
if path == "" {
return -1, -1, -1, errors.New("Path is empty")
}
path = PATH.Clean(path)
var stat = &syscall.Stat_t{}
err := syscall.Stat(path, stat)
if err != nil {
return -1, -1, -1, err
}
return int64(stat.Atimespec.Sec),
int64(stat.Mtimespec.Sec),
int64(stat.Ctimespec.Sec),
nil
}
// GetTimes return time of access, modification and creation at once
func GetTimes(path string) (time.Time, time.Time, time.Time, error) {
if path == "" {
return time.Time{}, time.Time{}, time.Time{}, errors.New("Path is empty")
}
path = PATH.Clean(path)
var stat = &syscall.Stat_t{}
err := syscall.Stat(path, stat)
if err != nil {
return time.Time{}, time.Time{}, time.Time{}, err
}
return time.Unix(int64(stat.Atimespec.Sec), int64(stat.Atimespec.Nsec)),
time.Unix(int64(stat.Mtimespec.Sec), int64(stat.Mtimespec.Nsec)),
time.Unix(int64(stat.Ctimespec.Sec), int64(stat.Ctimespec.Nsec)),
nil
}
// IsEmptyDir check if directory empty or not
func IsEmptyDir(path string) bool {
if path == "" {
return false
}
path = PATH.Clean(path)
fd, err := syscall.Open(path, syscall.O_RDONLY, 0)
if err != nil {
return false
}
defer syscall.Close(fd)
n, err := syscall.ReadDirent(fd, make([]byte, 4096))
if n == 0x30 || err != nil {
return true
}
return false
}
// IsExecutable check if file is executable or not
func IsExecutable(path string) bool {
if path == "" {
return false
}
path = PATH.Clean(path)
var stat = &syscall.Stat_t{}
err := syscall.Stat(path, stat)
if err != nil {
return false
}
user, err := system.CurrentUser()
if err != nil {
return false
}
return isExecutableStat(stat, user.UID, getGIDList(user))
}
// CheckPerms check many props at once.
//
// F - is file
// D - is directory
// X - is executable
// L - is link
// W - is writable
// R - is readable
// S - not empty (only for files)
//
func CheckPerms(props, path string) bool {
if len(props) == 0 || path == "" {
return false
}
path = PATH.Clean(path)
props = strings.ToUpper(props)
var stat = &syscall.Stat_t{}
err := syscall.Stat(path, stat)
if err != nil {
return false
}
var user *system.User
for _, k := range props {
switch k {
case 'F':
if stat.Mode&_IFMT != _IFREG {
return false
}
case 'D':
if stat.Mode&_IFMT != _IFDIR {
return false
}
case 'L':
if stat.Mode&_IFMT != _IFLNK {
return false
}
case 'X':
if user == nil {
user, err = system.CurrentUser()
if err != nil {
return false
}
}
if !isExecutableStat(stat, user.UID, getGIDList(user)) {
return false
}
case 'W':
if user == nil {
user, err = system.CurrentUser()
if err != nil {
return false
}
}
if !isWritableStat(stat, user.UID, getGIDList(user)) {
return false
}
case 'R':
if user == nil {
user, err = system.CurrentUser()
if err != nil {
return false
}
}
if !isReadableStat(stat, user.UID, getGIDList(user)) {
return false
}
case 'S':
if stat.Size == 0 {
return false
}
}
}
return true
}
// GetPerm return file permissions
func GetPerm(path string) os.FileMode {
path = PATH.Clean(path)
return os.FileMode(getMode(path) & 0777)
}
