linux-kernel - [PATCH v2] TMPFS: Expand "help" to explain value of TMPFS_POSIX

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <alpine.DEB.2.02.1106181108210.3831@localhost6.localdomain6>
Date:	Sat, 18 Jun 2011 11:10:20 -0400 (EDT)
From:	"Robert P. J. Day" <rpjday@...shcourse.ca>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
cc:	Randy Dunlap <rdunlap@...otime.net>, hughd@...gle.com,
	Andrew Morton <akpm@...l.org>
Subject: [PATCH v2] TMPFS: Expand "help" to explain value of
 TMPFS_POSIX_ACL


Expand the fs/Kconfig "help" info to clarify why it's a bad idea to
deselect the TMPFS_POSIX_ACL config variable.

Signed-off-by: Robert P. J. Day <rpjday@...shcourse.ca>

---

diff --git a/fs/Kconfig b/fs/Kconfig
index 19891aa..4217543 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -127,14 +127,20 @@ config TMPFS_POSIX_ACL
 	select TMPFS_XATTR
 	select GENERIC_ACL
 	help
-	  POSIX Access Control Lists (ACLs) support permissions for users and
-	  groups beyond the owner/group/world scheme.
+	  POSIX Access Control Lists (ACLs) support additional access rights
+	  for users and groups beyond the standard owner/group/world scheme,
+	  and this option selects support for ACLs specifically for tmpfs
+	  filesystems.
+
+	  If you've selected TMPFS, you almost certainly want this option
+	  as well since a number of user space features (e.g., ALSA sound)
+	  require POSIX ACL support under /dev to work properly.  In other
+	  words, if you're not sure and you have no *compelling* reason to
+	  deselect this feature, say Y.

 	  To learn more about Access Control Lists, visit the POSIX ACLs for
 	  Linux website <http://acl.bestbits.at/>.

-	  If you don't know what Access Control Lists are, say N.
-
 config TMPFS_XATTR
 	bool "Tmpfs extended attributes"
 	depends on TMPFS

-- 

========================================================================
Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
========================================================================
--
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/