Jean-Pierre André wrote:
Jean-Pierre André wrote:
> I copy a directory tree from an ext4 partition to a NTFS one
> mounted with 'permissions' option using cp -r -p. For all files
> which have access permissions set to 755 their copies have
> access mask 700,

[...]

/dev/sda1 on /mnt/ssd_win type fuseblk
(rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allo
w_other,blksize=4096,user)

This does not show your mount options. I need the
command having the option "permissions" which you
set. For instance, your syslog should show something
like :

Configuration type 7 KERNELPERMS 1 CACHEING 0
Version 2017.3.23AR.3 integrated FUSE 28
Requested device ../images/cf32M.ntfs canonicalized as /shared/ntfs/images/cf32$ Mounted /shared/ntfs/images/cf32M.ntfs (Read-Write, label "ntfs-try", NTFS 3.1)
Cmdline options: permissions
Mount options: allow_other,nonempty,default_permissions,relatime,fsname=/shared$
User mapping built, Posix ACLs not used, configuration type 7

An apparently unrelated problem: I cannot launch a linux executable
file from NTFS partition, even using root priveleges.

For running as root, one of the 'x' bit must be set (any one).
If it is that way, the issue is probably not related to ntfs-3g.

Did you also check your umask setting ?

Note : I am to go on travel, I will probably not reply until
end of next week.

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