mirror of https://github.com/mkerrisk/man-pages
63 lines
2.2 KiB
Groff
63 lines
2.2 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
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.\"
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.\" Copyright (C) 1997 Andries Brouwer (aeb@cwi.nl)
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.\"
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\"
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.\" Modified, 2003-05-26, Michael Kerrisk, <mtk-manpages@gmx.net>
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.TH GETRESUID 2 2003-05-26 "Linux 2.4" "Linux Programmer's Manual"
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.SH NAME
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getresuid, getresgid \- get real, effective and saved user or group ID
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.SH SYNOPSIS
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.B #define _GNU_SOURCE
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.br
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.B #include <unistd.h>
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.sp
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.BI "int getresuid(uid_t *" ruid ", uid_t *" euid ", uid_t *" suid );
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.br
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.BI "int getresgid(gid_t *" rgid ", gid_t *" egid ", gid_t *" sgid );
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.SH DESCRIPTION
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.BR getresuid ()
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and
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.BR getresgid ()
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(both introduced in Linux 2.1.44)
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get the real UID, effective UID, and saved set-user-ID (resp. group ID's)
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of the current process.
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.SH "RETURN VALUE"
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On success, zero is returned. On error, \-1 is returned, and
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.I errno
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is set appropriately.
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.SH ERRORS
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.TP
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.B EFAULT
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One of the arguments specified an address outside the calling program's
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address space.
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.SH "CONFORMING TO"
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This call is Linux-specific.
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The prototype is given by glibc since version 2.3.2
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provided _GNU_SOURCE is defined.
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.SH "SEE ALSO"
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.BR getuid (2),
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.BR setresuid (2),
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.BR setreuid (2),
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.BR setuid (2)
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