linux-kernel - [patch 00/10] mount ownership and unprivileged mount syscall (v8)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20080205213616.343721693@szeredi.hu>
Date:	Tue, 05 Feb 2008 22:36:16 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	akpm@...ux-foundation.org, hch@...radead.org, serue@...ibm.com
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [patch 00/10] mount ownership and unprivileged mount syscall (v8)

Just documentation updates, compared to the previous submission.
Thanks to Serge for the relentless reviews :)

Please consider for -mm, and then for 2.6.26.

Thanks,
Miklos

v7 -> v8

 - extend documentation of allow_usermount sysctl tunable
 - describe new unprivileged mounting in fuse.txt

v6 -> v7:

 - add '/proc/sys/fs/types/<type>/usermount_safe' tunable (new patch)
 - do not make FUSE safe by default, describe possible problems
   associated with unprivileged FUSE mounts in patch header
 - return EMFILE instead of EPERM, if maximum user mount count is exceeded
 - rename option 'nomnt' -> 'nosubmnt'
 - clean up error propagation in dup_mnt_ns
 - update util-linux-ng patch

v5 -> v6:

 - update to latest -mm
 - preliminary util-linux-ng support (will post right after this series)

v4 -> v5:

 - fold back Andrew's changes
 - fold back my update patch:
    o use fsuid instead of ruid
    o allow forced unpriv. unmounts for "safe" filesystems
    o allow mounting over special files, but not over symlinks
    o set nosuid and nodev based on lack of specific capability
 - patch header updates
 - new patch: on propagation inherit owner from parent
 - new patch: add "no submounts" mount flag

v3 -> v4:

 - simplify interface as much as possible, now only a single option
   ("user=UID") is used to control everything
 - no longer allow/deny mounting based on file/directory permissions,
   that approach does not always make sense

v1 -> v3:

 - add mount flags to set/clear mnt_flags individually
 - add "usermnt" mount flag.  If it is set, then allow unprivileged
   submounts under this mount
 - make max number of user mounts default to 1024, since now the
   usermnt flag will prevent user mounts by default

--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/