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Add backend support for suboridnate uids and gids

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These files list the set of subordinate uids and gids that users are allowed
to use.   The expect use case is with the user namespace but other uses are
allowed.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2013-01-22 01:14:35 -08:00
committed by Serge Hallyn
parent 5620c5ab5d
commit f28ad4b251
5 changed files with 566 additions and 0 deletions
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8
etc/login.defs
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@@ -226,6 +226,10 @@ UID_MAX 60000
# System accounts
SYS_UID_MIN 101
SYS_UID_MAX 999
# Extra per user uids
SUB_UID_MIN 100000
SUB_UID_MAX 600100000
SUB_UID_COUNT 10000
#
# Min/max values for automatic gid selection in groupadd(8)
@@ -235,6 +239,10 @@ GID_MAX 60000
# System accounts
SYS_GID_MIN 101
SYS_GID_MAX 999
# Extra per user group ids
SUB_GID_MIN 100000
SUB_GID_MAX 600100000
SUB_GID_COUNT 10000
#
# Max number of login(1) retries if password is bad