Description of problem: It doesn't appear to be possible to change the umask of an ntfs filesystem once mounted without rebooting. Version-Release number of selected component (if applicable): ntfs-3g-2011.4.12-5.fc16.x86_64 How reproducible: 100% Steps to Reproduce: # mount /dev/sdb1 /media/shared12/ -t ntfs -o rw,utf8,uid=500,exec,umask=000 # ls /media/shared12/test.wav -lh -rwxrwxrwx. 1 ian root 3.3M May 13 2010 /media/shared12/test.wav # umount /media/shared12 # mount /dev/sdb1 /media/shared12/ -t ntfs -o rw,utf8,uid=500,exec,umask=777 # ls /media/shared12/test.wav -lh -rwxrwxrwx. 1 ian root 3.3M May 13 2010 /media/shared12/test.wav Actual results: Once mounted the umask is 'stuck': unmounting and remounting with a different umask doesn't cause it to change. Have also tried setting all three umask, fmask, dmask and changing the mount point for the second mount. No change. Expected results: ntfs shouldn't remember previous umask. Additional info: The device is in the fstab: UUID=1ECC8E4CCC8E1DE1 /media/shared11 ntfs rw,utf8,uid=500,exec,umask=000,comment=systemd.automount 0 0 (not normally 000, this was for testing) In case this had any effect I tried using a different mount point and also changing the fstab umask setting. Again, no change.
1) I could not reproduce the behavior you reported, and I get what is expected. Maybe there is some interference with SELinux (see the final dot in "-rwxrwxrwx."). 2) The umask mount parameter is not processed by ntfs-3g, and a wrong behavior would have another origin (the parameter is passed "as is" to fuse and mount). If you want ntfs-3g to force some apparent permission, use fmask (for files) and/or dmask (for directories).
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Doesn't seem to have been fixed in F16, but in F18 works as expected.