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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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NS_GET_OWNER_UID(2const) NS_GET_OWNER_UID(2const)
NS_GET_OWNER_UID - discovering the owner of a user namespace
#include <linux/nsfs.h> /* Definition of NS_GET_OWNER_UID */
#include <sys/ioctl.h>
int ioctl(int fd, NS_GET_OWNER_UID, uid_t *uid);
The NS_GET_OWNER_UID operation can be used to discover the owner
user ID of a user namespace (i.e., the effective user ID of the
process that created the user namespace).
fd refers to a /proc/pid/ns/user file.
The owner user ID is returned in the uid_t pointed to by the
third argument.
On success, 0 is returned. On error, -1 is returned, and errno
is set to indicate the error.
EINVAL fd does not refer to a user namespace.
Linux.
Linux 4.11.
ioctl(2), ioctl_nsfs(2)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
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2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
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part of the original manual page), send a mail to
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Linux man-pages 6.9.1 2024-06-13 NS_GET_OWNER_UID(2const)
Pages that refer to this page: ioctl_nsfs(2)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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