From: Josh Triplett <josh@joshtriplett.org>
To: Andrew Morton <akpm@linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Kees Cook <keescook@chromium.org>,
mtk.manpages@gmail.com, linux-api@vger.kernel.org,
linux-man@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH manpages] getgroups.2: Document unprivileged setgroups calls
Date: Sat, 15 Nov 2014 01:01:52 -0800 [thread overview]
Message-ID: <20141115090151.GA15470@thin> (raw)
In-Reply-To: <3ccec8a13019b5e8ce7b1d7889677b778b070dc8.1416041823.git.josh@joshtriplett.org>
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
---
This should probably also include appropriate documentation for what
kernel introduces this behavior.
man2/getgroups.2 | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/man2/getgroups.2 b/man2/getgroups.2
index 373c204..edca37c 100644
--- a/man2/getgroups.2
+++ b/man2/getgroups.2
@@ -81,9 +81,10 @@ to be used in a further call to
.PP
.BR setgroups ()
sets the supplementary group IDs for the calling process.
-Appropriate privileges (Linux: the
+Any process may drop groups from its list, but adding groups requires
+appropriate privileges (Linux: the
.B CAP_SETGID
-capability) are required.
+capability).
The
.I size
argument specifies the number of supplementary group IDs
--
2.1.3
prev parent reply other threads:[~2014-11-15 9:02 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-15 9:00 [PATCH 1/2] groups: Factor out a function to set a pre-sorted group list Josh Triplett
2014-11-15 9:01 ` [PATCH 2/2] groups: Allow unprivileged processes to use setgroups to drop groups Josh Triplett
2014-11-15 15:37 ` Eric W. Biederman
2014-11-15 19:29 ` Josh Triplett
2014-11-15 20:06 ` Andy Lutomirski
2014-11-15 20:20 ` Josh Triplett
2014-11-16 2:05 ` Theodore Ts'o
2014-11-16 2:35 ` Josh Triplett
2014-11-16 3:08 ` Eric W. Biederman
2014-11-16 5:07 ` Josh Triplett
2014-11-16 13:32 ` Theodore Ts'o
2014-11-16 15:42 ` Andy Lutomirski
2014-11-16 19:12 ` Josh Triplett
2014-11-16 19:09 ` Josh Triplett
2014-11-16 3:40 ` Theodore Ts'o
2014-11-16 4:52 ` Josh Triplett
2014-11-17 11:37 ` One Thousand Gnomes
2014-11-17 18:07 ` Andy Lutomirski
2014-11-17 22:11 ` Eric W.Biederman
2014-11-17 22:22 ` Andy Lutomirski
2014-11-17 22:37 ` josh
2014-11-18 0:56 ` Casey Schaufler
2014-11-17 18:06 ` Casey Schaufler
2014-11-17 18:31 ` Andy Lutomirski
2014-11-17 18:46 ` Andy Lutomirski
2014-11-17 18:51 ` Casey Schaufler
2014-11-27 16:59 ` [CFT][PATCH] userns: Avoid problems with negative groups Eric W. Biederman
2014-11-27 20:52 ` Andy Lutomirski
2014-11-28 5:21 ` Eric W. Biederman
2014-11-28 5:22 ` [CFT][PATCH v2] " Eric W. Biederman
2014-11-28 15:11 ` [CFT][PATCH] " Andy Lutomirski
2014-11-28 16:34 ` Eric W. Biederman
2014-11-28 17:11 ` Andy Lutomirski
2014-11-17 22:41 ` [PATCH 2/2] groups: Allow unprivileged processes to use setgroups to drop groups Eric W.Biederman
2014-11-17 22:50 ` Andy Lutomirski
2014-11-17 23:13 ` josh
2014-11-15 9:01 ` Josh Triplett [this message]
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