[PATCH manpages] getgroups.2: Document unprivileged setgroups calls

[Josh Triplett]

Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
---
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

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