On my system, I have a large NTFS-formatted data partition, which is shared between Linux (Debian 8) and Windows (2012 Server). When I created a user-mapping file, as described in the NTFS-3G documentation, most file permissions worked as expected, only any new files created by me on Linux on the NTFS partition are owned by root and uneditable by my normal user account:
$ pwd
/mnt/data/src
$ ls -l
total 0
$ touch file
touch: setting times of ‘file’: Permission denied
$ ls -l
total 0
-rw-r--r-- 1 root root 0 Apr 28 10:41 file
$ ls -ld .
drwxr-xr-x 1 ##### root 144 Apr 28 10:41 .
$ id
uid=1000(#####) gid=1(daemon) groups=1(daemon),4(adm),20(dialout),21(fax),24(cdrom),25(floppy),26(tape),27(sudo),29(audio),30(dip),44(video),46(plugdev),108(netdev),110(lpadmin),113(scanner)
How should I set it that files are created as normally, with ownership set to my unprivileged user account? I tried setting the inherit mount option, but then I ran into another problem, namely that I couldn't write into root-owned directories and neither chmod or chown as root had any effect at all
Relevant files:
$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sdf1 during installation
UUID=eab88331-a1c7-4f18-b971-ad5f58c6d08c / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sde2 during installation
UUID=188C-66A1 /boot/efi vfat umask=0077 0 1
# /home was on /dev/sdf2 during installation
UUID=1d82108c-20bb-4df2-8df4-2ca145cca01f /home ext4 defaults 0 2
# swap was on /dev/sdf5 during installation
UUID=8e94b87a-e170-4a34-88fe-2100e8db0ae6 none swap sw 0 0
/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0
UUID=592AF2FB029E1E67 /mnt/data ntfs-3g
.
$ sudo cat /mnt/data/.NTFS-3G/UserMapping
[sudo] password for #####:
# Generated by usermap for Linux, v 1.1.6
:#####:S-1-5-21-742487409-2243251135-2122958030-513
:#####:S-1-5-21-1202660629-1788223648-1801674531-513
:#####:S-1-5-21-343818398-1004336348-725345543-513
:#####:S-1-5-21-1801674531-1614895754-1417001333-513
:#####:S-1-5-21-117609710-2025429265-839522115-513
#####:#####:S-1-5-21-742487409-2243251135-2122958030-1003
#####:#####:S-1-5-21-1202660629-1788223648-1801674531-1004
#####:#####:S-1-5-21-343818398-1004336348-725345543-1004
#####:#####:S-1-5-21-1801674531-1614895754-1417001333-1004
#####:#####:S-1-5-21-117609710-2025429265-839522115-1004
#####:#####:S-1-5-21-117609710-2025429265-839522115-1005