1 /*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #if defined(LIBC_SCCS) && !defined(lint) 9 static char sccsid[] = "@(#)cuserid.c 8.1 (Berkeley) 06/04/93"; 10 #endif /* LIBC_SCCS and not lint */ 11 12 #include <pwd.h> 13 #include <stdio.h> 14 #include <string.h> 15 #include <unistd.h> 16 17 char * 18 cuserid(s) 19 char *s; 20 { 21 register struct passwd *pwd; 22 23 if ((pwd = getpwuid(geteuid())) == NULL) { 24 if (s) 25 *s = '\0'; 26 return (s); 27 } 28 if (s) { 29 (void)strncpy(s, pwd->pw_name, L_cuserid); 30 return (s); 31 } 32 return (pwd->pw_name); 33 } 34