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cmount: when setting dates discard out of range dates

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It appears that sometimes Windows/WinFSP/cgofuse sends dates which are
the epoch to rclone.  These dates appear as 1601-01-01 00:00:00 plus
or minus the timezone.

These dates aren't being sent from rclone.

This patch filters dates out before 1601-01-02 so rclone does not
attempt to set them.

See: https://forum.rclone.org/t/bug-corruption-of-modtime-via-vfs-layer/12204
See: https://forum.rclone.org/t/io-error-googleapi-error-403-insufficient-permission-insufficientpermissions/11372
See: https://github.com/billziss-gh/cgofuse/issues/35
This commit is contained in:
Nick Craig-Wood 2019-10-09 22:28:07 +01:00
parent 4b9da601be
commit 0b7f959433
1 changed files with 13 additions and 4 deletions
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17
cmd/cmount/fs.go
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@ -441,6 +441,11 @@ func (fsys *FS) Rename(oldPath string, newPath string) (errc int) {
return translateError(fsys.VFS.Rename(oldPath, newPath))
}
// Windows sometimes seems to send times that are the epoch which is
// 1601-01-01 +/- timezone so filter out times that are earlier than
// this.
var invalidDateCutoff = time.Date(1601, 1, 2, 0, 0, 0, 0, time.UTC)
// Utimens changes the access and modification times of a file.
func (fsys *FS) Utimens(path string, tmsp []fuse.Timespec) (errc int) {
defer log.Trace(path, "tmsp=%+v", tmsp)("errc=%d", &errc)
@ -448,12 +453,16 @@ func (fsys *FS) Utimens(path string, tmsp []fuse.Timespec) (errc int) {
if errc != 0 {
return errc
}
var t time.Time
if tmsp == nil || len(tmsp) < 2 {
t = time.Now()
} else {
t = tmsp[1].Time()
fs.Debugf(path, "Utimens: Not setting time as timespec isn't complete: %v", tmsp)
return 0
}
t := tmsp[1].Time()
if t.Before(invalidDateCutoff) {
fs.Debugf(path, "Utimens: Not setting out of range time: %v", t)
return 0
}
fs.Debugf(path, "Utimens: SetModTime: %v", t)
return translateError(node.SetModTime(t))
}