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Delta Between Two Patch Sets: src/pkg/os/file.go

Issue 1103041: code review 1103041: os: add Utime function (Closed)
Left Patch Set: code review 1103041: os: add Utime function Created 13 years, 11 months ago
Right Patch Set: code review 1103041: os: add Utime function Created 13 years, 11 months ago
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LEFTRIGHT
1 // Copyright 2009 The Go Authors. All rights reserved. 1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style 2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file. 3 // license that can be found in the LICENSE file.
4 4
5 // The os package provides a platform-independent interface to operating 5 // The os package provides a platform-independent interface to operating
6 // system functionality. The design is Unix-like. 6 // system functionality. The design is Unix-like.
7 package os 7 package os
8 8
9 import ( 9 import (
10 "runtime" 10 "runtime"
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401 401
402 // Truncate changes the size of the file. 402 // Truncate changes the size of the file.
403 // It does not change the I/O offset. 403 // It does not change the I/O offset.
404 func (f *File) Truncate(size int64) Error { 404 func (f *File) Truncate(size int64) Error {
405 if e := syscall.Ftruncate(f.fd, size); e != 0 { 405 if e := syscall.Ftruncate(f.fd, size); e != 0 {
406 return &PathError{"truncate", f.name, Errno(e)} 406 return &PathError{"truncate", f.name, Errno(e)}
407 } 407 }
408 return nil 408 return nil
409 } 409 }
410 410
411 // Utime changes the access and modification times of the named file. 411 // Chtimes changes the access and modification times of the named
412 func Utime(name string, atime_ns int64, mtime_ns int64) Error { 412 // file, similar to the Unix utime() or utimes() functions.
413 //
414 // The argument times are in nanoseconds, although the underlying
415 // filesystem may truncate or round the values to a more
416 // coarse time unit.
417 func Chtimes(name string, atime_ns int64, mtime_ns int64) Error {
413 var utimes [2]syscall.Timeval 418 var utimes [2]syscall.Timeval
414 utimes[0] = syscall.NsecToTimeval(atime_ns) 419 utimes[0] = syscall.NsecToTimeval(atime_ns)
415 utimes[1] = syscall.NsecToTimeval(mtime_ns) 420 utimes[1] = syscall.NsecToTimeval(mtime_ns)
416 if e := syscall.Utimes(name, &utimes); e != 0 { 421 if e := syscall.Utimes(name, &utimes); e != 0 {
417 » » return &PathError{"utime", name, Errno(e)} 422 » » return &PathError{"chtimes", name, Errno(e)}
418 » } 423 » }
419 » return nil 424 » return nil
420 } 425 }
LEFTRIGHT

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