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Diffstat (limited to 'man7/uts_namespaces.7')
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diff --git a/man7/uts_namespaces.7 b/man7/uts_namespaces.7 new file mode 100644 index 0000000..670d19e --- /dev/null +++ b/man7/uts_namespaces.7 @@ -0,0 +1,46 @@ +.\" Copyright (c) 2019 by Michael Kerrisk <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" +.TH uts_namespaces 7 2022-12-04 "Linux man-pages 6.05.01" +.SH NAME +uts_namespaces \- overview of Linux UTS namespaces +.SH DESCRIPTION +UTS namespaces provide isolation of two system identifiers: +the hostname and the NIS domain name. +These identifiers are set using +.BR sethostname (2) +and +.BR setdomainname (2), +and can be retrieved using +.BR uname (2), +.BR gethostname (2), +and +.BR getdomainname (2). +Changes made to these identifiers are visible to all other +processes in the same UTS namespace, +but are not visible to processes in other UTS namespaces. +.PP +When a process creates a new UTS namespace using +.BR clone (2) +or +.BR unshare (2) +with the +.B CLONE_NEWUTS +flag, the hostname and domain name of the new UTS namespace are copied +from the corresponding values in the caller's UTS namespace. +.PP +Use of UTS namespaces requires a kernel that is configured with the +.B CONFIG_UTS_NS +option. +.SH SEE ALSO +.BR nsenter (1), +.BR unshare (1), +.BR clone (2), +.BR getdomainname (2), +.BR gethostname (2), +.BR setns (2), +.BR uname (2), +.BR unshare (2), +.BR namespaces (7) |