Dne 06. 02. 19 v 11:58 Karel Zak napsal(a): > On Wed, Feb 06, 2019 at 12:07:54AM +0100, Stanislav Brabec wrote: >> sys-utils/mount.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) > > Applied, thanks! > > Please, send also updates for the mnt_fstype_is_pseudofs(). > I started to inspect file systems available in SUSE, and I found that there is an another category of file systems: File systems that have a source (so they are not pseudo file systems), but information provided by the kernel is not sufficient to check whether a particular source is already mounted. Some of them are completely undetectable (both source and FS type provide generic information only), some are detectable by source, but not by FS type, some are detectable by FS type, but source match cannot be used. For these file systems, mount(8) cannot guarantee that the correct volume is mounted. Only some guesses are possible. Maybe it should warn about it, or it should refuse such file systems in the fstab. Examples of undetectable FUSE file systems: xdg-document-portal is completely undetectable; it can be ran once per UID /dev/fuse on /run/user/10027/doc type fuse (rw,nosuid,nodev,relatime,user_id=10027,group_id=100) 376 536 0:65 / /run/user/10027/doc rw,nosuid,nodev,relatime - fuse /dev/fuse rw,user_id=10027,group_id=100 curlftpfs undetectable by type, detectable by source curlftpfs#ftp://ftp.suse.com/ on /home/sbrabec/T type fuse (rw,nosuid,nodev,relatime,user_id=10027,group_id=100) 544 510 0:47 / /sys/fs/fuse/connections rw,relatime master:282 - fusectl fusectl rw encfs: can be detected by type, source cannot be detected encfs on /local/Encrypted type fuse.encfs (rw,nosuid,nodev,relatime,user_id=10027,group_id=100,default_permissions) 397 540 0:84 / /local/Encrypted rw,nosuid,nodev,relatime - fuse.encfs encfs rw,user_id=10027,group_id=100,default_permissions gvfs: can be detected by type, source cannot be detected gvfsd-fuse on /run/user/10027/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=10027,group_id=100) 562 536 0:48 / /run/user/10027/gvfs rw,nosuid,nodev,relatime master:291 - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=10027,group_id=100 archivemount: can be detected by type, source cannot be detected archivemount on /home/sbrabec/T type fuse.archivemount (rw,nosuid,nodev,relatime,user_id=10027,group_id=100) 376 539 0:65 / /home/sbrabec/T rw,nosuid,nodev,relatime - fuse.archivemount archivemount rw,user_id=10027,group_id=100 -- Best Regards / S pozdravem, Stanislav Brabec software developer --------------------------------------------------------------------- SUSE LINUX, s. r. o. e-mail: sbrabec@xxxxxxxx Křižíkova 148/34 (Corso IIa) tel: +420 284 084 060 186 00 Praha 8-Karlín fax: +420 284 084 001 Czech Republic http://www.suse.cz/ PGP: 830B 40D5 9E05 35D8 5E27 6FA3 717C 209F A04F CD76
