getresuid, getresgid — get real, effective and saved user or group ID
#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) ; |
getresuid
() and getresgid
() (both introduced in Linux
2.1.44) get the real UID, effective UID, and saved
set-user-ID (resp. group ID's) of the current process.
On success, zero is returned. On error, −1 is
returned, and errno
is set
appropriately.
One of the arguments specified an address outside the calling program's address space.
These calls are non-standard; they also appear on HP-UX and some of the BSDs.
The prototype is given by glibc since version 2.3.2
provided _GNU_SOURCE
is
defined.
getuid(2), setresuid(2), setreuid(2), setuid(2), feature_test_macros(7)
Copyright (C) 1997 Andries Brouwer (aebcwi.nl) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. Modified, 2003-05-26, Michael Kerrisk, <mtk.manpagesgmail.com> |