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

NEWGIDMAP

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

NAME

newgidmap - set the gid mapping of a user namespace 

SYNOPSIS

newgidmap pid gid lowergid count [gid lowergid count [ ... ]]
 

DESCRIPTION

Thenewgidmapsets/proc/[pid]/gid_mapbased on its command line arguments and the gids allowed in/etc/subgid. Note that the root user is not exempted from the requirement for a valid/etc/subgidentry.

After the pid argument,newgidmapexpects sets of 3 integers:

gid

Beginning of the range of GIDs inside the user namespace.

lowergid

Beginning of the range of GIDs outside the user namespace.

count

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

newgidmapverifies that the caller is the owner of the process indicated bypidand that for each of the above sets, each of the GIDs in the range [lowergid, lowergid+count] is allowed to the caller according to/etc/subgidbefore setting/proc/[pid]/gid_map.

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

OPTIONS

There currently are no options to thenewgidmapcommand. 

FILES

/etc/subgid

List of user's subordinate group IDs.

/proc/[pid]/gid_map

Mapping of gids from one between user namespaces.
 

SEE ALSO

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


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
FILES
SEE ALSO

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