Implement system.LUtimesNano and system.UtimesNano. The latter might be
removed in future because it's basically same as os.Chtimes. That's why
the test is mainly focusing LUtimesNano.
Docker-DCO-1.1-Signed-off-by: Kato Kazuyoshi <kato.kazuyoshi@gmail.com> (github: kzys)
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+package system |
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+ |
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+import ( |
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+ "syscall" |
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+ "unsafe" |
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+) |
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+ |
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+func LUtimesNano(path string, ts []syscall.Timespec) error {
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+ var _path *byte |
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+ _path, err := syscall.BytePtrFromString(path) |
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+ if err != nil {
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+ return err |
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+ } |
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+ |
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+ if _, _, err := syscall.Syscall(syscall.SYS_LUTIMES, uintptr(unsafe.Pointer(_path)), uintptr(unsafe.Pointer(&ts[0])), 0); err != 0 && err != syscall.ENOSYS {
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+ return err |
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+ } |
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+ |
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+ return nil |
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+} |
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+ |
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+func UtimesNano(path string, ts []syscall.Timespec) error {
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+ return syscall.UtimesNano(path, ts) |
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+} |
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+package system |
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+ |
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+import ( |
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+ "io/ioutil" |
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+ "os" |
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+ "path/filepath" |
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+ "syscall" |
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+ "testing" |
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+) |
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+ |
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+func prepareFiles(t *testing.T) (string, string, string) {
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+ dir, err := ioutil.TempDir("", "docker-system-test")
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+ if err != nil {
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+ t.Fatal(err) |
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+ } |
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+ |
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+ file := filepath.Join(dir, "exist") |
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+ if err := ioutil.WriteFile(file, []byte("hello"), 0644); err != nil {
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+ t.Fatal(err) |
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+ } |
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+ |
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+ invalid := filepath.Join(dir, "doesnt-exist") |
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+ |
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+ symlink := filepath.Join(dir, "symlink") |
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+ if err := os.Symlink(file, symlink); err != nil {
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+ t.Fatal(err) |
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+ } |
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+ |
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+ return file, invalid, symlink |
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+} |
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+ |
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+func TestLUtimesNano(t *testing.T) {
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+ file, invalid, symlink := prepareFiles(t) |
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+ |
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+ before, err := os.Stat(file) |
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+ if err != nil {
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+ t.Fatal(err) |
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+ } |
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+ |
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+ ts := []syscall.Timespec{{0, 0}, {0, 0}}
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+ if err := LUtimesNano(symlink, ts); err != nil {
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+ t.Fatal(err) |
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+ } |
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+ |
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+ symlinkInfo, err := os.Lstat(symlink) |
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+ if err != nil {
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+ t.Fatal(err) |
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+ } |
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+ if before.ModTime().Unix() == symlinkInfo.ModTime().Unix() {
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+ t.Fatal("The modification time of the symlink should be different")
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+ } |
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+ |
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+ fileInfo, err := os.Stat(file) |
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+ if err != nil {
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+ t.Fatal(err) |
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+ } |
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+ if before.ModTime().Unix() != fileInfo.ModTime().Unix() {
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+ t.Fatal("The modification time of the file should be same")
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+ } |
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+ |
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+ if err := LUtimesNano(invalid, ts); err == nil {
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+ t.Fatal("Doesn't return an error on a non-existing file")
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+ } |
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+} |