Query: getuid
OS: x11r4
Section: 3p
Links: x11r4 man pages all man pages forum categories
Format:Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
GETUID(3P) POSIX Programmer's Manual GETUID(3P)PROLOGThis manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.NAMEgetuid - get a real user IDSYNOPSIS#include <unistd.h> uid_t getuid(void);DESCRIPTIONThe getuid() function shall return the real user ID of the calling process.RETURN VALUEThe getuid() function shall always be successful and no return value is reserved to indicate the error.ERRORSNo errors are defined. The following sections are informative.EXAMPLESSetting the Effective User ID to the Real User ID The following example sets the effective user ID and the real user ID of the current process to the real user ID of the caller. #include <unistd.h> #include <sys/types.h> ... setreuid(getuid(), getuid()); ...APPLICATION USAGENone.RATIONALENone.FUTURE DIRECTIONSNone.SEE ALSOgetegid(), geteuid(), getgid(), setegid(), seteuid(), setgid(), setregid(), setreuid(), setuid(), the Base Definitions volume of IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>COPYRIGHTPortions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .IEEE/The Open Group 2003 GETUID(3P)