1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2010 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 /* 24 * resolvepath implementation 25 */ 26 27 #define resolvepath ______resolvepath 28 29 #include <ast.h> 30 #include <error.h> 31 32 #undef resolvepath 33 34 #undef _def_map_ast 35 #include <ast_map.h> 36 37 #if defined(__EXPORT__) 38 #define extern __EXPORT__ 39 #endif 40 41 extern int 42 resolvepath(const char* file, char* path, size_t size) 43 { 44 register char* s; 45 register int n; 46 register int r; 47 48 r = *file != '/'; 49 n = strlen(file) + r + 1; 50 if (n >= size) 51 { 52 #ifdef ENAMETOOLONG 53 errno = ENAMETOOLONG; 54 #else 55 errno = ENOMEM; 56 #endif 57 return 0; 58 } 59 if (!r) 60 s = path; 61 else if (!getcwd(path, size - n)) 62 return 0; 63 else 64 { 65 s = path + strlen(path); 66 *s++ = '/'; 67 } 68 strcpy(s, file); 69 return pathcanon(path, PATH_PHYSICAL|PATH_DOTDOT|PATH_EXISTS) ? strlen(path) : -1; 70 } 71