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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2013-02-28 13:51:49 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2014-09-13 20:16:00 -0700 |
| commit | df23ae04d67ca492dec454d702c69c2fe7607f71 (patch) | |
| tree | b529fcd0bc1d09dc26813b3d71f095b157a24505 | |
| parent | e4f4f2e12561236fb4fe8d9a1f5e8635201ac0cc (diff) | |
| download | man-pages-df23ae04d67ca492dec454d702c69c2fe7607f71.tar.gz | |
user_namespaces.7: Linux 3.9 provides a better implementation of nonoverlapping map checks
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man7/user_namespaces.7 | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/man7/user_namespaces.7 b/man7/user_namespaces.7 index 54f5d6922e..25c51228d6 100644 --- a/man7/user_namespaces.7 +++ b/man7/user_namespaces.7 @@ -311,11 +311,15 @@ can't be used to write to nonzero offsets in the file). The range of user IDs (group IDs) specified in each line cannot overlap with the ranges in any other lines. -In the current implementation (Linux 3.8), this requirement is -satisfied by a simplistic implementation that imposes the further +In the initial implementation (Linux 3.8), this requirement was +satisfied by a simplistic implementation that imposed the further requirement that the values in both field 1 and field 2 of successive lines must be -in ascending numerical order. +in ascending numerical order, +which prevented some otherwise valid maps from being created. +Linux 3.9 and later +.\" commit 0bd14b4fd72afd5df41e9fd59f356740f22fceba +fix this limitation, allowing any valid set of nonoverlapping maps. .IP * The mapped user IDs (group IDs) must in turn have a mapping in the parent user namespace. |