1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 .asciz "@(#)getuid.c 5.1 (Berkeley) 04/12/91" 20 #endif /* LIBC_SCCS and not lint */ 21 22 #include "SYS.h" 23 24 .data 25 myuid: .long -1 26 myeuid: .long -1 27 .text 28 29 ENTRY(getuid) 30 movl myuid,r0 # check cache 31 cmpl $-1,r0 32 bneq doit 33 ret 34 doit: 35 chmk $SYS_getuid 36 jcs err 37 movl r0,myuid # set cache 38 movl r1,myeuid # set cache 39 ret # uid = getuid(); 40 41 ENTRY(geteuid) 42 movl myeuid,r0 # check cache 43 cmpl $-1,r0 44 bneq doit 45 ret 46 doit: 47 chmk $SYS_getuid 48 jcs err 49 movl r0,myuid # set cache 50 movl r1,r0 51 movl r0,myeuid # set cache 52 ret # uid = geteuid(); 53 err: 54 jmp cerror 55 56 ENTRY(setreuid) 57 mnegl $1,myuid 58 mnegl $1,myeuid 59 chmk $SYS_setreuid 60 jcs err 61 ret # setreuid(ruid, euid) 62