Home / server / Questions / 772262
Accepted
Ilya Shinkarenko
Asked: 2016-04-23 06:52:02 +0800 CST

Permission denied when changing timestamp of a directory on a CIFS mount

  • 772

The server dir is mounted with a user, who definitely has "Write Attributes" permissions in Windows.

/etc/fstab:

//server/shared /mnt/fs1 cifs noperm,rw,nounix,iocharset=utf8,gid=java,file_mode=0774,dir_mode=0775,credentials=/localhome/securedir/fs1.credentials 0 0

The mounted files are directories are readable and writeable.

Changing timestamp of a file works:

> touch -t 01010101 /mnt/fs1/test.file

Changing timestamp of a directory results into "Permission denied":

> touch -t 01010101 /mnt/fs1/baselines
touch: setting times of `/mnt/fs1/baselines': Permission denied

Are there any other mounting options I have to apply? Thanks!

permissions samba cifs attributes sles11

1 Answers

  1. Best Answer

    The most reasonable answer I got so far is that Windows does not have modification date attribute for directories. There is only a creation date.

    This issue can be really confusing when trying to change the directory's modification date with e.g. java.io.File#setLastModified method. Both under Linux and Windows this API works on local directories with predictable result. However, in one particular constellation, which is trying to set modification date of a mounted CIFS directory on a Linux machine, this API fails to change the date and returns false.

    • 1