Manpage of GETRESUID
GETRESUIDSection: Linux Programmer's Manual (2)
NAMEgetresuid, getresgid - get real, effective and saved user/group IDs
SYNOPSIS#define _GNU_SOURCE /* See feature_test_macros(7) */
DESCRIPTIONgetresuid() 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 VALUEOn success, zero is returned. On error, -1 is returned, and errnois set appropriately.
- One of the arguments specified an address outside the calling program's address space.
VERSIONSThese system calls appeared on Linux starting with kernel 2.1.44.
CONFORMING TOThese calls are nonstandard; they also appear on HP-UX and some of the BSDs.
NOTESThe original Linux getresuid() and getresgid() system calls supported only 16-bit user and group IDs. Subsequently, Linux 2.4 added getresuid32() and getresgid32(), supporting 32-bit IDs. The glibc getresuid() and getresgid() wrapper functions transparently deal with the variations across kernel versions.
SEE ALSOgetuid(2), setresuid(2), setreuid(2), setuid(2), credentials(7)
This document was created by man2html, using the manual pages.
Time: 16:30:10 GMT, March 14, 2017 Click Here!