GETRESUID
Section: Linux Programmer's Manual (2)
Updated: 2007-12-28
NAME
getresuid, getresgid - get real, effective and saved user/group IDs
SYNOPSIS
#define _GNU_SOURCE
#include <unistd.h>
int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
DESCRIPTION
getresuid()
returns the real UID, the effective UID, and the saved set-user-ID
of the calling process, in the arguments
ruid,
euid,
and
suid,
respectively.
getresgid()
performs the analogous task for the process's group IDs.
RETURN VALUE
On success, zero is returned.
On error, -1 is returned, and
errno
is set appropriately.
ERRORS
- EFAULT
-
One of the arguments specified an address outside the calling program's
address space.
VERSIONS
These system calls appeared on Linux starting with kernel 2.1.44.
The prototypes are given by glibc since version 2.3.2,
provided
_GNU_SOURCE
is defined.
CONFORMING TO
These calls are nonstandard;
they also appear on HP-UX and some of the BSDs.
SEE ALSO
getuid(2),
setresuid(2),
setreuid(2),
setuid(2),
credentials(7),
feature_test_macros(7)
COLOPHON
This page is part of release 3.27 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- VERSIONS
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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Time: 07:34:54 GMT, March 26, 2013