1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2011 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#undef _AST_API_H 37#include <ast_api.h> 38 39#if defined(__EXPORT__) 40#define extern __EXPORT__ 41#endif 42 43extern int 44resolvepath(const char* file, char* path, size_t size) 45{ 46 register char* s; 47 register int n; 48 register int r; 49 50 r = *file != '/'; 51 n = strlen(file) + r + 1; 52 if (n >= size) 53 { 54#ifdef ENAMETOOLONG 55 errno = ENAMETOOLONG; 56#else 57 errno = ENOMEM; 58#endif 59 return 0; 60 } 61 if (!r) 62 s = path; 63 else if (!getcwd(path, size - n)) 64 return 0; 65 else 66 { 67 s = path + strlen(path); 68 *s++ = '/'; 69 } 70 strlcpy(s, file, size - (s - path)); 71 return (s = pathcanon(path, size, PATH_PHYSICAL|PATH_DOTDOT|PATH_EXISTS)) ? (s - path) : -1; 72} 73