Re: SUCESS!!! - was [Re: Progress report Re: Invoking ddrescue]
On Tue, Nov 15, 2016 at 05:18:25PM +0100, Thomas Schmitt wrote:
> David Wright wrote:
> > That umask looks odd.
>
> Using a thing named "umask" to "Set the file permission on the filesystem"
> is odd. No further speculation but only experiments would give clarity.
It's how fat/vfat mounts work in Linux. The file system has no internal
owners, groups or permissions, so the kernel simply assigns them.
By default, all files on a vfat mount show up as root:root 666 and
all directories as root:root 777 as modified by the umask of the
mounting process. So if you've got a umask of 022 when you mount, then
it's 644 and 755 respectively. Explicitly specifying a umask in the
fat/vfat mount options overrides that. See mount(8) for details.
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