On 2017-05-05, <to...@tuxteam.de> <to...@tuxteam.de> wrote: > > On Fri, May 05, 2017 at 09:17:51AM +0000, Curt wrote: >> On 2017-05-02, Greg Wooledge <wool...@eeg.ccf.org> wrote: >> > On Tue, May 02, 2017 at 07:16:57PM +0430, Mostafa Shahverdy wrote: >> >> I have a very annoying problem. I can't write to my usb drives (fat32, >> >> ntfs, etc.) without root permissions. How can I fix this? >> > >> > Mount the file system with "-o uid=youruser" to have the files presented >> > by the kernel as being "owned" by that user. >> > >> > >> >> I don't understand that advice entirely. >> >> Isn't there a difference between mounting the device as a regular user >> and writing to the device as a regular user (which you might be >> prevented from doing if the filesystem had root-only write permissions, >> thus Brian's ls -l suggestion to eliminate that possibility)? > > There is a difference. The "-o=foo" advice is betting on the file system > being one without ownership info (i.e. a lower life form ;-)
The OP does mention FAT32, and FAT32 doesn't have permissions, I hear, so in the case of a FAT32 file system on a usb stick any user at all should be able to write to it (given the appropriate mount options)? However, ntfs does have some sort of permission system, I believe. What about the permissions on the directory under which the mount is eventually made? That could affect the right to write, right? > Once mounted, the operating system just "assumes" some ownership and > permission info. The "user=" and "group=" options give you some say > in it. > > The option "user" on the fstab just allows a regular user to activate > a mount according to said entry (however perms & ownership of the "end > result" might look like). > > The two things are (somewhat) orthogonal (if I understood your question > correctly). I think you did, thanks. > cheers > - -- t > > -- "It might be a vision--of a shell, of a wheelbarrow, of a fairy kingdom on the far side of the hedge; or it might be the glory of speed; no one knew." --Mrs. Ramsay, speculating on why her little daughter might be dashing about, in "To the Lighthouse," by Virginia Woolf.
