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local: Add --local-no-set-modtime option to prevent modtime changes

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If this option is enabled, rclone will not set modtime of uploaded files and
the backend will return ModTimeNotSupported as its Precision.

Normally rclone updates modification time of files after they are done
uploading. This can cause permissions issues on Linux platforms when
rclone is copying to a CIFS mount where the user rclone is
running as does not own the file uploaded. If this option is enabled,
rclone will no longer update the modtime after copying a file.

See: https://forum.rclone.org/t/chtimes-error-on-local-mounted-copy/17784
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tyhuber1 2020-07-30 08:43:17 -07:00 committed by GitHub
parent 3daa63cae8
commit bf355c4527
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1 changed files with 19 additions and 0 deletions
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19
backend/local/local.go
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@ -144,6 +144,17 @@ the OS zeros the file. However sparse files may be undesirable as they
cause disk fragmentation and can be slow to work with.`,
Default: false,
Advanced: true,
}, {
Name: "no_set_modtime",
Help: `Disable setting modtime
Normally rclone updates modification time of files after they are done
uploading. This can cause permissions issues on Linux platforms when
the user rclone is running as does not own the file uploaded, such as
when copying to a CIFS mount owned by another user. If this option is
enabled, rclone will no longer update the modtime after copying a file.`,
Default: false,
Advanced: true,
}, {
Name: config.ConfigEncoding,
Help: config.ConfigEncodingHelp,
@ -166,6 +177,7 @@ type Options struct {
CaseSensitive bool `config:"case_sensitive"`
CaseInsensitive bool `config:"case_insensitive"`
NoSparse bool `config:"no_sparse"`
NoSetModTime bool `config:"no_set_modtime"`
Enc encoder.MultiEncoder `config:"encoding"`
}
@ -542,6 +554,10 @@ func (f *Fs) Rmdir(ctx context.Context, dir string) error {
// Precision of the file system
func (f *Fs) Precision() (precision time.Duration) {
if f.opt.NoSetModTime {
return fs.ModTimeNotSupported
}
f.precisionOk.Do(func() {
f.precision = f.readPrecision()
})
@ -878,6 +894,9 @@ func (o *Object) ModTime(ctx context.Context) time.Time {
// SetModTime sets the modification time of the local fs object
func (o *Object) SetModTime(ctx context.Context, modTime time.Time) error {
if o.fs.opt.NoSetModTime {
return nil
}
var err error
if o.translatedLink {
err = lChtimes(o.path, modTime, modTime)