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user_namespaces.7: tfix 

Reported-by: Stéphane Aulery <saulery@free.fr>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-02-26 13:24:45 +01:00
parent 157890398b
commit 374215d5c6
1 changed files with 2 additions and 2 deletions
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man7/user_namespaces.7
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@ -439,12 +439,12 @@ maps to a range starting at 0 in the (nonexistent) parent namespace,
and the length of the range is the largest 32-bit unsigned integer.
(This deliberately leaves 4294967295 (the 32-bit signed \-1 value) unmapped.
This is deliberate:
.IR "(uid_t)\ -\1"
.IR "(uid_t)\ \-1"
is used in several interfaces (e.g.,
.BR setreuid (2))
as a way to specify "no user ID".
Leaving
.IR "(uid_t)\ -\1"
.IR "(uid_t)\ \-1"
unmapped and unusable guarantees that there will be no
confusion when using these interfaces.
.\"