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 41extern int 42resolvepath(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