1 /* 2 * The authors of this software are Rob Pike and Ken Thompson. 3 * Copyright (c) 2002 by Lucent Technologies. 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose without fee is hereby granted, provided that this entire notice 6 * is included in all copies of any software which is or includes a copy 7 * or modification of this software and in all copies of the supporting 8 * documentation for such software. 9 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED 10 * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE 11 * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY 12 * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. 13 */ 14 #include <u.h> 15 #include <libc.h> 16 #include "fmtdef.h" 17 18 int 19 sprint(char *buf, char *fmt, ...) 20 { 21 int n; 22 uint len; 23 va_list args; 24 25 len = 1<<30; /* big number, but sprint is deprecated anyway */ 26 /* 27 * on PowerPC, the stack is near the top of memory, so 28 * we must be sure not to overflow a 32-bit pointer. 29 */ 30 if(buf+len < buf) 31 len = -(uintptr)buf-1; 32 33 va_start(args, fmt); 34 n = vsnprint(buf, len, fmt, args); 35 va_end(args); 36 return n; 37 } 38