On Mon, 15 Aug 2016 10:48:56 -0500, Steve French <smfrench@xxxxxxxxx> wrote: > When mounting with newer dialects (vers=2.1 or vers=3 to get SMB2.1 or > SMB3 support for example), or when mounting with CIFS to servers like > Windows, the protocol dialect does not support these reserved > characters, so by default we mount with posixpath mapping enabled to > support mapping (posixpaths) of reserved characters to the SFM > reserved range (same as Windows Services for Mac and the Mac itself > does). The result is that you can create and read the filenames > remotely and they look fine but on the Samba server itself the > reserved character will look strange since it is remapped. Steve, thanks so much for your time and effort. And, you're right: in fact, if I mount a share and create a file on it with one of those reserved characters in the name, I can see that the actual filename on the linux server has some "funny" characters in it. Now I also understand why ls works (shows filenames as reported by the server) while "cat" won't (client remaps characters, and server can't locate a file with the remapped name). > You could turn off posixpaths on mount (noposixpaths) on your cifs > mount to see if this fixes it [...] Didn't work for me; however, looking at the kernel source I found that there is a "nomapposix" option that seems to do the trick. If I use this option, I can read and write filenames with reserved characters without any mapping. Reason why this escaped me in the first place is that "mapposix" is not documented in the mount.cifs manpage.. > [...] but the key will be looking at the mount options that were > passed in to the kernel so we can see if you are mounting with > posixpath mapping (which would force posixpaths to be mapped even > though the server would have supported them without mapping) Googling around, I came across this post https://lists.samba.org/archive/samba-technical/2014-September/102671.html so now I'm a bit confused as to what the default behavior should be.. I thought my client/kernel would negotiate unix extensions by default with a samba server, therefore no mapping would occur by default, but apparently MAC-style mapping is now the default on linux too? Andrea. -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
