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GETUID(2) BSD System Calls Manual GETUID(2) NAME geteuid, getuid -- get user identification SYNOPSIS #include <unistd.h> uid_t geteuid(void); uid_t getuid(void); DESCRIPTION The getuid() function returns the real user ID of the calling process. The geteuid() function 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 execu-tion execution tion of ``set-user-ID'' mode processes, getuid() is used to determine the real-user-id of the calling process. ERRORS The getuid() and geteuid() functions are always successful, and no return value is reserved to indicate an error. LEGACY SYNOPSIS #include <sys/types.h> #include <unistd.h> The include file <sys/types.h> is necessary for both functions. SEE ALSO getgid(2), setreuid(2), compat(5) STANDARDS Geteuid() and getuid() functions conform to IEEE Std 1003.1-1988 (``POSIX.1''). 4th Berkeley Distribution June 4, 1993 4th Berkeley Distribution |