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MAN page from OpenSuSE shadow-4.6-lp151.2.3.2.x86_64.rpm

NEWUIDMAP

Section: User Commands (1)
Updated: 04/29/2018
Index 

NAME

newuidmap - set the uid mapping of a user namespace 

SYNOPSIS

newuidmap pid uid loweruid count [uid loweruid count [ ... ]]
 

DESCRIPTION

Thenewuidmapsets/proc/[pid]/uid_mapbased on its command line arguments and the uids allowed in/etc/subuid. Note that the root user is not exempted from the requirement for a valid/etc/subuidentry.

After the pid argument,newuidmapexpects sets of 3 integers:

uid

Beginning of the range of UIDs inside the user namespace.

loweruid

Beginning of the range of UIDs outside the user namespace.

count

Length of the ranges (both inside and outside the user namespace).

newuidmapverifies that the caller is the owner of the process indicated bypidand that for each of the above sets, each of the UIDs in the range [loweruid, loweruid+count] is allowed to the caller according to/etc/subuidbefore setting/proc/[pid]/uid_map.

Note that newuidmap may be used only once for a given process. 

OPTIONS

There currently are no options to thenewuidmapcommand. 

FILES

/etc/subuid

List of user's subordinate user IDs.

/proc/[pid]/uid_map

Mapping of uids from one between user namespaces.
 

SEE ALSO

login.defs(5),newusers(8),subuid(5),useradd(8),usermod(8),userdel(8).


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
FILES
SEE ALSO

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