getuid2freebsd
Get user identification
Part of geteuid(2freebsd).
Usage
#include <unistd.h>
uid_t
getuid(void);
uid_t
geteuid(void);
Library
Standard C Library (libc, -lc)
Overview
The getuid() system call returns the real user ID of the calling process. The geteuid() system call returns the effective user ID of the calling process.
The real user ID is that of the user who has invoked the program. As the effective user ID gives the process additional permissions during execution of “set-user-ID” mode processes, getuid() is used to determine the real-user-id of the calling process.
Errors
The getuid() and geteuid() system calls are always successful, and no return value is reserved to indicate an error.
Releases
9 releases since Debian 5.0 (Lenny); the text changed 6 times.